Koelconvectoren. Chilled beams. version 2

Transcription

1 Kelcnvectren 2012 Chilled beams versin 2

2 Preface When d yu have a perfect indr climate? We are surrunded by air, but usually we d nt even ntice it. We nly ntice the air arund us when there is smething wrng with it. When the air mves t much, we experience that as a draught. When the air is stagnant fr t lng, we feel it is stuffy. We ntice the air when it becmes t warm, t cld, t humid r t dry. The best air is air yu d nt even ntice. S the answer t the abve questin is an indr climate is perfect when there desn t appear t be ne. The mre incnspicuus, the better. Hwever incnspicuus it may be, a perfect indr climate des nt exist f its wn accrd - we at Slid Air knw that better than anyne. Air is nt the same as nthing. Our cmpany name says it all - t us air is smething very tangible. Mre t the pint, it has been ur daily wrk fr mre than 25 years. T us, air is everything. T us it hlds n secrets. Yu will encunter this expertise in all ur prducts and services. One f the mst imprtant prduct grups are the chilled beams. In this publicatin we will explain everything, why chilled beams are s essential t a perfect indr climate. After the intrductin we will cntinue with the system technlgy. Is it pssible t measure bjectively whether an indr climate is perfect? Which types f rms d we have and which technlgy must be used t create an ptimum indr climate? The answers t these and many ther answers can be fund in Chapter 2. Chapters 3-9 present ur entire range f chilled beams. Fr every type we prvide clear infrmatin abut its pssible applicatins, their peratin, installatin requirements and many ther technical details. We clse ur chilled-beams catalgue with a Chapter abut special applicatins and versins, fllwed by backgrund infrmatin abut ur cmpany. At Slid Air we have a reputatin t maintain, which als applies t ur dcumentatin. We hpe t have prduced anther useful reference wrk fr fitters and ther prfessinals in ur industry. A prfessin the end user des nt always think abut, but that is lgical. After all, yu simply dn t ntice a perfect indr climate. PREFACE

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4 Cntents Chapter 1: Intrductin... 3 Chapter 2: System technlgy Intrductin and terminlgy Buildings and their functins Climate-cntrl systems Why chilled-beam systems? Active chilled beams Passive chilled beams Cnditined utside air and cndensatin cntrl Psitining chilled beams in rms Overview Slid Air chilled beams OKN range Chapter 3: Chilled beam OKNI 300 & Applicatin Operatin OKNI 300 and Main dimensins, cnnectin sizes and ceiling integratin Versins and ptins Order cdes OKNI 300 and Installatin requirements and maintenance Sectin example and selectin details Chapter 4: Chilled beam OKNI 450 & Chapter 5: Chilled beam OKNV 300 & Chapter 6: Chilled beam OKNB Chapter 7: Chilled beam OKNH Chapter 8: Chilled beam OKNM Chapter 9: Chilled beam OKNP Chapter 10: Further ptins Special versins Integratin int building-cntrl systems Cntrl cmpnents Why Slid Air? Missin and strategy Histry f Slid Air References Chapter 11: Cntact us CONTENTS 2

5 CHAPTER 1 Intrductin The indr climate and the way in which a rm is ventilated have a majr impact n the wellbeing f human beings and their perfrmance. The way the air is distributed is an essential aspect. Slid Air specialises in air-distributin technlgy. We manufacture and supply a brad range f air distributin equipment alngside chilled beams. As a result f ur many years f experience and knwledge we have built up an excellent reputatin as a supplier in the area f indr climates, but als fr majr prjects and industrial applicatins. Hwever cmplex yur questin may be, we like t prvide a slutin. Frm the fur Slid Air ffices listed belw, we serve sales ffices and dealers wrldwide: 3 1 Internatinal 2 Netherlands 3 4 Germany France 3

6 Canada Estnia United Kingdm Pland Lithuania 4 Switzerland Italy Czech Republic Australia 1.0 4

7 5 CHAPTER 2.0 System Technlgy

8 Cntents 2.1 General and terminlgy Buildings and their functins Climate-cntrl systems Why chilled-beam systems? Active chilled beams Passive chilled beams Cnditined utdr air and cndensatin cntrl Psitining chilled beams in rms Overview Slid Air chilled beams range

9 7 2.1 Intrductin and terminlgy

10 Just as human beings themselves, climate cntrl has mved thrugh a develpment. Thrughut histry human beings have always tried t create the best pssible indr climate when the utdr climate was nt cmfrtable. First f all they lked fr prtectin against the elements. The secnd step cnsisted f creating the required temperature, and we created fire. The third step was t imprve ventilatin, i.e. t remve spent air and smke and t intrduce fresh air frm utside. The furth step was t regulate the humidity f the air, and the fifth step t cntrl the cmplete air quality, including CO 2 levels and air purity with filters. The final step f this climate-cntrl prcess is t ensure that everything is carried ut in an envirnmentally friendly manner, and t ensure that the envirnment suffers the least pssible burden. The essential element in this final step is the applicatin f Slid Air chilled beams, as we will shw n the fllwing pages. Definitin f terms With the afrementined steps we describe hw the envirnment in which an individual exists is made mre cmfrtable each time. This bk will use the fllwing terms and cncepts. 1. The individual - the individual places increasingly mre demands n cmfrt in the living envirnment. This applies t the private living envirnment, but increasingly t the business envirnment. An envirnment is cmfrtable when it prduces a thermally neutral experience. 2. The building - prtectin against the utdr climate, against the elements. 3. The climate-cntrl system - cntrl f the temperature, air humidity, air change, CO 2 and air purity in different rms. 4. The rm -living and wrking envirnment. 5. Chilled beam -the interface between the rm and the climate-cntrl system. There is a significant interdependence between the individual, the building, the climatecntrl system, the ccupied zne and the chilled beams. The fllwing paragraphs will deal with these aspects, with the chilled beam as the link between the individual s sensatin f cmfrt, the rm, and the climate-cntrl system

11 Cmfrt standard If there was ever a subjective cncept, it has t be cmfrt. What is cmfrtably warm fr ne persn, is t cld fr anther. The statistical averages f persnal experiences f individuals has been used t draw up the Eurpean cmfrt standard EN This cmfrt standard EN 7730 prvides the definitin f a thermally cmfrtable indr climate: A thermally cmfrtable indr climate is an ccupied zne where the predicted percentage f persns dissatisfied with the thermal cmfrt is maximum 10% (PPD smaller than r equal t 10%). Specificatins ften refer t EN 7730, which uses the fllwing 3 imprtant terms: Predicted Mean Vte: PMV [-3 t + 3]. This is the predicted average pinin n the experience f thermal cmfrt n a 7-pint scale. -3 is t cld, 0 is neutral and + 3 is t warm. Specificatins ften cntain the requirement f a PMV value between -0.5 and +0.5 (with a PPD f 10% r less). Predicted Percentage f Dissatisfied: PPD [%]. Predicted percentage f dissatisfied persns in respect f thermal cmfrt. Even in an ideal indr climate, with a PMV value f 0, the PPD is still 5%. In ther wrds, hwever ideal the indr climate may be, 5% will remain dissatisfied. Draught Rating: DR [%]. Predicted percentage f dissatisfied persns as a result f draught. The EN 7730 defines 3 cmfrt classes; see the table belw: cmfrt class EN 7730 cmfrt valuatin PPD [%] A gd <6-0.2 < PMV < <10 B average < < PMV < <20 C mderate < < PMV < <30 PMV [-] DR [%] The greater the deviatin frm these ideal circumstances, the mre peple will find the indr climate uncmfrtable. In general, an ideal indr climate means that the persn present experiences thermal cmfrt r, in ther wrds, is thermally neutral. 9

12 This thermal balance, r the basis fr the Predicted Mean Vte: PMV, is influenced by: Rm parameters, such as rm and wall temperature, humidity and air velcity (left clumn belw) The metablism, the level f activity and clthing f the individual (right clumn belw). Rm Thermal balance Individual Rm temperature - this is the average f the air and radiant temperature. Temperature f surrunding walls - walls, but utdr facades (with glass windws) in particular, can be a surce f heat r cld. Air velcity - the extent t which air velcities are experienced as cmfrtable r acceptable depends n the temperature and the level f turbulence. In warmer envirnments, a higher air velcity is acceptable up t 0.25 m/s cmpared with 0.15m/s fr clder envirnments; abve these threshlds, the nticeable airflw is experienced as draught. Air humidity - in the summer a relative humidity f up t 50% is experienced as cmfrtable. If the humidity exceeds 70%, it starts t feel sticky. It makes it mre difficult fr peple t transfer heat and they start t perspire nticeably. In winter, air humidity may nt fall belw 30%. The air will have t be changed and cnditined in a manner that keeps the humidity between 30 and 50%. Heat emissin by equipment -equipment, such as cmputers, printers, screens, lighting, cffee machines etc cnsume electricity that is cnverted int heat. They are heat surces that will have a lcal effect n the airflw in rms. Heat prductin by the individual -the metablism f individuals depends n their physical activity and leads t heat prductin & emissin t their envirnment thrugh cnvectin, radiatin & evapratin. heat prductin & emissin by individual seated ffice wrk [ W ] walking activities [ W ] heavy prductin wrk [ W ] cnvectin radiatin evapratin ttal Cnvectin - warm bjects & persns create surrunding air with a lwer density, which generates an airflw (natural cnvectin). The degree f cnvectin depends n the temperature difference and the size f the bject. Radiatin - temperature differences between surfaces prduce a heat transfer by means f radiatin. Evapratin - the evapratin prcess f misture n skin (sweat), and f misture frm the lungs (breath) requires energy that is withdrawn frm the bdy. Insulatin value clthing - clthing determines the warmth-insulatin value f individuals t a large extent. As ladies ften dress lighter than men, they may experience the cmfrt level in the jint living-wrking envirnment in different ways. That is why men are likely t feel warm sner and wmen cld

13 2.2 Buildings and their functins Different applicatins f buildings lead t specific thermal and hygiene demands. The design f climate-cntrl systems takes this int accunt with the bjective f creating a cmfrtable indr climate with the lwest pssible energy burden and csts. In this framewrk we can list the fllwing types f buildings, where the initial system chice can be made n the basis f the building s use. 1. Office Offices are characterised by ccupancy. There is ften a high thermal lad, due t many internal heat surces, such as cmputers, printers and lighting, and external heat surces, such as sunrays n the, ften large, glass surfaces in the facades. This lad changes during the wrking day. The chice is ften fr chilled beams. In larger ffices they are cntrlled centrally by a Building Management System (BMS), supplemented with individual settings. 2. Hspital Hspitals ften have wide-ranging climate requirements, depending n the medical functin f the department. Operating theatres require filtered air n the basis f vertical displacement; pliclinics and bedrms have chilled beams. Receptin lbbies with high ceilings are ften fitted with all-air systems. It is als imprtant t cnsider the difference between wrking persnnel and resting patients. 3. Halls Event halls are ften characterised by a high percentage f cling lad that needs t be discharged, due t the many items f equipment in the stands and the lighting. Prductin halls ften have a high heat lad due t machines, but the number f prductin emplyees is generally lw. In high-ceilinged halls it is energetically useful t cnditin the ccupied zne with displacement diffusers. Cntaminatin is discharged t the upper air layers f the rm as a result f natural cnvectin. 4. Htel Htel rms have changing ccupancy, which means fast regulatin is required. The cling lad is based n 1 r 2 persns, fridge, lighting, TV and smetimes n large windw surfaces. The entrance t a htel rm ften has a suspended ceiling (next t the bath rm), where a single-sided utflw chilled beam with vertical intake and hrizntal discharge air is an ideal slutin. This als cmplies with the high acustic requirements fr htel rms. Cmpared with traditinal slutins, the initial investment, energy cnsuptin and the maintenance csts are lw. 11

14 5. Schl, university Large lecture theatres ften require ventilatin air, due t high numbers f students, which means that all-air systems can be a gd slutin. Hwever, if majr thermal lads als play a rle, chilled beams can be applied t. Chilled beams have the benefit f lw nise levels, which is an imprtant factr during teaching r lecturing. These applicatins require extra attentin t the risk f cndensatin. 6. Shps, retail Shps require a climate-cntrl system with flexible settings in rder t respnd t shp lay-uts that are changed regularly. Chilled beams with a high number f setting ptins in respect f the amunt f air and the utflw directin are an excellent slutin. The chart belw prvides an verview f the maximum sund pressures and indicatins f cmfrt classes. Specificatins may deviate frm this in either a psitive r negative sense. After crrectin fr the selective sensitivity f human hearing, sund levels are expressed in decibel db(a). Due t the lgarithmic character f human hearing, this sund scale is defined lgarithmically. Every 3-decibel increase means an audible dubling f the sund level. Office Hspital Htel Leisure Sprt Educatin Shp/retail Industry Other Cmfrt class Sund pressure level Lp db(a) ccupied zne A B C bard rm private ffice pen-plan ffice meeting rm perating theatre ward treatment rm htel rm restaurant theatre cinema sprts centre class rm lecture theatre clthing supermarket prductin hall assembly department clean rm bank library radi studi

15 2.3 Climate-cntrl systems The presence f peple in buildings prduces a hygienic and thermal lad in the rms in which they are. Climate-cntrl systems are designed t realise the required cmfrt class thrugh air change and cnditining. In rms that cntain many peple, such as cncert halls, lecture theatres r meeting rms, the lad caused by thse present is the main factr in terms f the air pllutin. The slutin is t chse a system that brings in enugh utdr air t remve the plluted air. This means a high ventilatin rate with a climate-cntrlled airflw, which transprts enugh heating and cling capacity t the rms. All-air systems are the right chice in such applicatins. Mdern architecture (lts f glass in facades) and autmatin in the wrkplace have prduced a strng increase in the thermal lad f rms. All-air systems are nt the best slutin in this case anymre - the higher heat lad requires mre cling capacity, which the all-air systems achieve with large amunts f air and the crrespnding large air-handling units, ducts and accessries. This leads t high energy csts fr the air treatment and the air transprt. At the same time, the ventilatin levels will be t high and will prduce cmplaints abut draught. Air-water systems are the best chice in these situatins - the cling r heating capacity can be adjusted independently f the required ventilatin-air capacity. Water is als an excellent medium fr the efficient transprt f thermal capacity Besides cmfrt benefits, this als prduces significant cst reductins. indr situatin ffice meeting rm, class rm characteristics lw ccupancy, 1 persn/10-15 m 2 high ccupancy, 1 persn/5-8 m 2 1 persn / 2-3 m 2 active chilled beams active chilled beams & VAV passive chilled beam cnstant vlume CAV variable vlume VAV required cling capacity W/m 2 1, , fan cil displacement primary air* L/s/m 2 theatre museum, crridr labaratry, dining hall nursing rm, htel rm retail 1 persn / 2-3 m 2 n high climate cnditins, attentin t exhaust f misture ventilatin, exhaust f used air lw ccupancy, high climate requirements high heat lad, equipment, lighting *: based n a minimum f 30m 3 /h/pp r 8 L/s/pp f ventilatin air 4, , ,

16 Cnstant Air Vlume system The vlume flw in CAV systems is cnstant r rather it is set in tw steps. The air-supply temperature is set fr the rms with the greatest cling need. This may mean that rms with a variable ccupancy, fr example, will need additinal heating, because they are cled t much. Applicatin: public rms. Variable Air Vlume system The vlume flw in VAV systems can be set per rm in functin f the time, but the temperature f the airflw remains cnstant. The vlume flw is set per rm with cntrl valves, and the frequency-cntrlled ventilatrs f the central air-handling unit regulate the entire air need. Applicatin: large meeting rms. Fan cil With fan cils, the rm-air vlume flw is generated by a fan in the unit. This achieves a majr airflw that prduces a large, turbulent airflw ver the heat exchanger. This causes a majr and efficient energy transfer frm water in the heat exchanger t the passing air. Fan cils have the greatest cling capacity, but als prduce mst nise. Fan cils can dehumidify the air (latent cling), but need t be fitted with a drainage system fr the cndensatin water. Fan cils generally have high maintenance csts, because f the mving parts, filters, and a drainage system. Applicatin: halls, large shpping centres. Active chilled beams The vlume flw in active chilled beams cnsists f tw cmpnents, ventilatin air and recirculatin air. The recirculatin air is drawn int the heat exchanger by means f inductin and is then cled r heated. Applicatin: ffices Passive chilled beams The required ventilatin air is nt added via the passive chilled beam, but is brught separately int the rm. This separate air supply can be mixed r displaced. Applicatin: ffices and rms with an additinal cling-lad requirement

17 Air distributin - mixing r displacement The designer f the indr climate will have t make a chice as t hw the supplied air is distributed thrugh the rm. The velcity, the flw pattern and the turbulence f the supply air are imprtant parameters fr a cmfrtable indr climate. There are 2 types f air distributin, being mixing and displacement. Displacement - the natural air-supply methd In the case f displacement, the supplied air is brught in at lw velcity (apprx m/s), frm a lw psitin int the rm. The air distributes ver the flr and frms a layer f fresh air where the peple are. Near heat surces the air is heated and rises. The return air is exhausted at the tp f the rm and mixes with the rising supply air t a very limited extent. The turbulence f the airflw is lw, which means that the air quality in the ccupied zne is very high and wuld be cmparable t the level f the supplied air. This is an imprtant benefit f displacement. The limited turbulence, in cmbinatin with heat surces, creates a vertical temperature gradient, which is still experienced as cmfrtable if it des nt amunt t mre than 2 degrees C per metre. Cnsequently 5 degrees difference between flr and ceiling in nrmal rms is still cmfrtable. If the intake air des nt have an undertemperature, there will be mixing and the principle f displacement n lnger applies. Disadvantages and risks f displacement: It is nt suitable fr heating Is nt suitable fr large cling capacities at a lw airflw Requires mre space when it is built-in A risk f draught near the intake unit fr the rm Sensitive t disrupting heat surces, pening drs, etc. 15

18 Mixing - an efficient and cntrlled air-supply methd During mixing, the air is supplied t the rm at ceiling height with an utflw velcity f 2 t 5 m/s. Due t the Canda effect, the airflw maintains lng cntact with the ceiling and the higher velcity induces the airflw. This inductin draws in the air frm the rm and mixes it with the supplied air. This prcess mainly takes place abve the ccupied zne. By mixing in the rm air, the temperature difference between the incming supply air and the rm air decreases. When the velcity has decreased cnsiderably, the air will descend (near the walls fr instance) and will flush thrugh the ccupied zne. The air quality and the temperature distributin is therefre even thrughut the ccupied zne

19 2.4 Why chilled-beam systems? Chilled beams cmbine the majr advantages f water and air. Air ensures the ventilatin needs and water serves as an efficient transprt medium fr heat and/r cling. The key elements are a cmfrtable and healthy living and wrking envirnment, high energy efficiency, cmpact space requirements, minimal maintenance csts and extensive architectural ptins. That is why chilled beams are increasingly applied in mdern buildings fr ventilatin and climate cntrl. The extensive range f chilled beams fr many different building types means a gd slutin is always available. Cmfrt The cmfrt functins ventilatin, cling and heating are realised by ne system - the system is multifunctinal; The cmfrt level is high, at a cnstant ventilatin level, the crrect system selectin ensures a high cling capacity. It als prevents an uncmfrtable draught. In ther wrds, chilled beams are suitable fr ventilating rms with a high thermal lad. There is a lw nise level due t cntrlled inflw speeds and the absence f driven rtating parts. The extravent ptin prvides extra flexibility in relatin t lcal cmfrt ptimisatin and fr adjustments t changed rm layuts. 17

20 Lifecycle csts The layut f the rms can be flexible; if the use f the rm is changed subsequently, mdular psitining facilitates easy adjustment t the new layut. Psitining furniture and dividing walls can be changed withut having t change the beams. Rm temperatures can be set centrally and individually. N maintenance t the Slid Air chilled beams, because they d nt cntain filters, drainage systems r mving parts. It is nly necessary t remve dust frm time t time. Extremely ecnmical due t the efficient heat/cld transprt, lw maintenance csts. This may be enhanced with energy-efficient prductin f ht and cld water by using a heat pump. Chilled beams wrk withut cndensatin in the cling mde, high temperature cling and lw temperature heating, ding away with the need fr drainage systems, pumps, etc. The amunt f fresh air is nly 1 /3 t 1 /4 cmpared t all-air systems. Architectural aspects A large amunt f architectural freedm. The units can be integrated int the ceiling in different ways, but can als be expsed t create a certain lk. Prject-based, architectural design is als pssible. The space requirements are minimal, because the heat/cld transprt capacity f water is high, which means the duct systems and central air-handling unit can be minimised in terms f dimensins. Lw built-in heights, which makes chilled beams widely applicable in new buildings and renvatins

21 2.5 Active chilled beams Active chilled beams have a wide range f applicatins and capacities. They can be used fr ffices, hspitals, htels, schls and shps. There are standard slutins fr high ceilings, lw ceilings and fr rms withut suspended ceilings. Slid Air supplies a wide range f cmfrt chilled beams, high capacity chilled beams, suspended chilled beams, and bulkhead units. Client-specific slutins can be develped and prduced fr special architectural designs. ventilatin air / primary air flw supply air/ tertiary airflw supply air/ tertiary airflw rm air / secndary airflw Active chilled beams have the fllwing 3 functins: ventilatin cling heating. The ventilatin air/primary air has 2 functins, being: Ensuring the air quality with ventilatin/air change Cntributing t the basic cnditining f the rm. 19

22 Hw is the unit cnstructed? Active chilled beams cnsist f a sheet-steel pressure chamber, sheet-steel utflw ducts, and a cpper/aluminium heat exchanger. Ventilatin air (primary air) is brught int the pressure chamber (plenum) and then distributed evenly. The ventilatin air is blwn ut thrugh the nzzle penings at increased speed int the utflw ducts. This increased speed induces the air abve the heat exchanger and draws it alng. This drawn-in air creates an underpressure in its turn, which means rm air (secndary air) is transprted thrugh the intake diffuser t the heat exchanger. The rm air is cled r heated due t cntact with the fins f the heat exchanger. The supply air (tertiary air) is brught int the rm via the utflw ducts. This supply air cnsists f ventilatin air, and the cled r heated secndary air. The amunt f secndary air is generally a factr 3 t 5 f the ventilatin air. The supply air is blwn int the rm alng the ceiling. In the rm, the supply air induces mvement in the existing air and they are mixed. An active chilled beam is therefre a mixing system. Heat exchangers Water is a much mre efficient transprt medium f heat r cld than air. The specific heat is mre than 4 times greater than that f air. Water-based heat exchangers are applied in chilled beams because f this efficiency and the reduced space requirements. The heat transfer frm water t rm air takes place by taking the water thrugh 1 r mre circuits f cpper tubes, which are fitted with aluminium fins. Water circuit There are tw types f water circuits - 2-pipe and 4-pipe water circuits. These circuits cnsist f cpper pipes that are cupled with sldering. The diameters are in functin f the required capacity; cmmnly used sizes are 3 /8 and 1 /4 inch (external diameter), with a wall thickness f apprx. 0.3 t 0.4mm. If water circuits becme lng (and the resistance t high), parallel circuits can be used. The external water cnnectin pints have varius versins and generally a larger diameter, such as a 12 r 15mm pipe size. Screw cuplings are pssible t. The water circuit preferably has a turbulent water flw. Warmth transfer in turbulent flws is greater than in laminar flws. The rule f thumb is that the water velcity must be at least 0.2 t 0.25 m/s. The maximum water velcity is 0.8 m/s, because there is a pssibility that the water flw may prduce audible sunds abve that velcity. Furthermre, the heat transfer hardly increases abve a certain water speed

23 Standard water parameters: Water-side pressure lss: 0-10 kpa. Water speed: m/s The lcal flw speed in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Aluminium fins The aluminium fins generally have a wall thickness f apprx. 0.15mm and are spaced at 3 t 4mm increments fr active units (and 6 t 7mm fr passive units). The fin pitch is ptimised per type n the basis f the parameters air resistance and heat transfer. 2-pipe heat exchangers 2-pipe heat exchangers are used fr ht r cld water r bth in functin f the seasns, the s-called change-ver mde. The central cntrl prvides all chilled beams with warm water during clder utdr temperatures and with cld water during warmer utdr temperatures, taking accunt f the internal heat lad. 4-pipe heat exchangers 4-pipe heat exchangers have their wn water circuits fr cling and heating. As the warm-water circuit has a higher temperature difference in relatin t the rm temperature, the warm-water circuit is generally shrter and has smaller dimensins than the cld-water circuit. With 2 circuits per chilled beam it is pssible t cl r heat rms independently f ther rms, depending n their different heat lads. 21

24 2.5 22

25 The inductin principle Inductin means that stagnant ambient air is drawn int an airflw, which creates a much larger airflw with a limited amunt f air. The rati at which this takes place is called the inductin factr. The inductin factr is the rati between the ttal airflw, divided by the riginal airflw. drawn in, induced airflw + riginal airflw Inductin factr = riginal airflw Chilled beams use inductin in tw different ways; the first is an internal inductin, generated by the nzzle and the secnd an external inductin, generated by the air flwing int the rm. Inductin thrugh airflw frm an active chilled beam abve the ccupied zne Active chilled beams, integrated int suspended ceilings, blw the air (tertiary airflw) slightly angled dwn int the rm. This utflw velcity ranges frm 2 t 5 m/s. This airflw that enters at an angle creates an underpressure just belw the ceiling and will draw this air t the ceiling (the Canda effect). The inflw angle must nt exceed 35 degrees. The airflw that mves hrizntally t the ceiling will draw in the underlying stagnant air (induce the rm air). This makes the airflw thicker, and the mixing will reduce the velcity f the ttal airflw. This is a linear relatinship - the inductin factr remains a cnstant 0.2. Every metre frm the diffuser the airstream thickness increases by 20cm. This inductin cntinues until the air velcity has drpped t m/s. This inductin mixes the inlet air prperly with the rm air. The thrw is an imprtant cncept in relatin t the velcity decrease. This is the distance frm the diffuser t the psitin where the average velcity has decreased t 0.25 m/s. The main benefits f this inductin are: As much air as pssible in the rm is brught int mtin, which ensures the temperature is levelled prperly (fr cmfrt) Old air des nt remain anywhere, althugh the mixing principle means that part f the ld air will cntinue t be recirculated The velcity decreases sufficiently befre the ccupied zne is reached. 23

26 Internal inductin thrugh nzzles The nzzles are designed t create the mst efficient pssible air utflw frm the plenum (pressure chamber), which then induces r draws in as much secndary air (rm air) as pssible via the heat exchanger. The nzzle crss-sectin has been ptimised, which means frictin lsses are minimal and the nise prductin due t speed increase is minimised t. Different dimensins f nzzles can be selected depending n the ventilatin air/cling capacity rati. The fllwing nzzles are available: A, B, C, D, E, L, each with a different diameter. The A nzzle has the highest inductin factr and therefre the highest cling capacity per m 3 primary air. This requires the highest pressure in the plenum. The E and L nzzle supply the highest level f ventilatin at the same plenum pressure. Depending n the nzzle type and the utflw speed, the induced airflw can be 3-6 times greater than the airflw frm the nzzle, which makes the inductin factr 4 t 7. This induced airflw, als knwn as the secndary airflw, flws thrugh a heat exchanger, which heats r cls the induced air. Withut inductin, the airflw thrugh the heat exchanger wuld be much less and less thermal capacity wuld be transferred. The selectin f the nzzle cnfiguratin therefre determines the scpe f the chilled beam fr a certain indr climate and its lad. As usage applicatins and required cmfrt levels changed after a perid f time, the patented Extravent slutin was develped. This slutin ffers the ptin f a simple change t the nzzle cnfiguratins by mving Extravent strips, which means different nzzle diameters are used. Fr every Extravent strip, 300 mm f nzzle pattern can be set with M5 blts with a hexagn scket. The magnetic seal clses the inactive nzzles 100% and this prevents undesirable nise prductin. Slid Air Extravent: patented adjustable nzzle cnfiguratin

27 Design Active chilled beams create a cmfrtable ccupied zne thrugh gd air distributin and air mixing with lw nise levels. The cmbinatin with heat pumps in particular is suitable, because the chilled beams still perate effectively at lwer temperatures. The purpse f the air distributin is t supply and remve the pre-treated ventilatin air t the demarcated ccupied zne, with the mst cmplete pssible flushing f the rm withut causing discmfrt r draught. The air velcity f the ventilatin air is reduced frm apprx m/s in the main ducts t 2-4 m/s in the flexible, acustic ducts that are cnnected t the chilled beams. In the inlet zne, the tertiary air is blwn int the rm at apprx. 2 t 5 m/s. This airflw induces the rm air, making the airflw thicker, and reducing the velcity (air inductin zne). When this velcity has reduced sufficiently, the air (descend and expansin zne) descends and enters the ccupied zne. In the ccupied zne, the air velcity must still amunt t maximum 0.2 m/s (target value). When airflws are directed at each ther (clliding), the resulting dwnward flw can smetimes exceed this value. In thse applicatins we recmmend psitining walkways in thse places. Return air can be extracted in different ways. One ptin is via return diffusers in the ceiling that are cnnected t a discharge duct r via a free flw abve the ceiling. Anther ptin is via an integrated extract facility int the chilled beams themselves. Sufficient extractin f the return air in the right places guarantees a prper flushing f the rm. descend and inletexpansin area inductin area area ccupied zne (blue dtted line) with air mixing at lw velcities In cuntries with a mderate climate, standard ffice spaces (with nrmal ceiling heights and n crner rms) require a cling capacity f Watt per square metre f ffice area. This cling capacity can increase t 140 Watt/m 2 fr higher thermal lads, fr example in suthern Eurpean cuntries r in crner rms that have a lt f glass. Mre cling capacity requires mre airflw. Rms with high ceilings ffer the ptin t apply an extra large cling capacity. Fr heating capacity in ccupied znes we recmmend nt t exceed 40 W/m 2 flr area t prevent the stratificatin effect - a stable, warm upper zne f the ccupied zne withut adequate mixing with the underlying, clder layer. A lwer heating temperature, C fr example, leads t a better peratin f the heating functin. 25

28 The selectin and calculatin f active chilled beams fr an area must take accunt f the fllwing design rules: Select the crrect chilled-beam mdels by using the Slid Air selectin prgramme r tables. The maximum recmmended temperature difference between the supply air and the rm temperature is 10 degrees. (The cling supplied by the water system f the chilled beams is t have a cntrl system t cntrl the required water capacity). Strive t achieve lw air velcities in the ccupied zne - if pssible up t apprximately 0.2 m/s - t prevent/minimise draught cmplaints. The calculatin f the required cling capacity must take accunt f the heat/cld accumulating capacity f the building, therwise there is a danger that the calculated capacity is matched t the peak lad f the day and may be t large and t expensive. The system can als be smaller in design if yu use summer night ventilatin with primary air, and heating is accelerated with recirculatin air. The design f systems must pay special attentin t cling rms if the ventilatin levels are set t high. A carefully designed distributin f the chilled beams in the ceiling prevents chilled beams wrking against each ther and cancelling each ther ut. Adequate distance between them will reduce the air velcity befre it enters the ccupied zne. Ensure adequate ventilatin air (1.5 litre/s per m 2 flr surface as a minimum standard r in accrdance with natinal building standards). Ventilatin air ften requires dehumidifying first in rder t prevent cndensatin. The minimum cld-water temperature t the chilled beam must be abve the dew pint. The draught risk requires special attentin when the rm supply air is directed at a cld windw, facade r directly dwnwards (fr example tw supply airflws directed at each ther) t the ccupied zne. Ensure an adequate discharge f the return air. Ensure air-tight facades t prevent undesirable air infiltratin. Ensure insulating and slar glazing (r separate sun prtectin), s that cld (in winter) and heat (due t sunlight) d nt influence the airflw alng the facade t much. Ensure a gd building-cntrl system that can cntrl the individual temperatures in functin f the internal and external thermal lads and rm ccupancy. Special attentin is required when windws can be pened, because f the cndensatin risks. The calculated nise levels are excluding space attenuatin. T determine the nise level in nrmal rms, these calculated nise levels are ften reduced by apprximately 6 10 db space attenuatin. Cmfrt-technically cmplex rms can be simulated in a measuring rm n the instructins f the client, r calculated by means f cmputatinal fluid dynamics. nrmal ffice areas summer winter Ventilatin rate fr entire rm in ffice areas ventilate at least twice per hur. in meeting rms ventilate at least 3 6 times per hur. Primary air/ventilatin air temperature C C. Static pre-pressure air Pa Pa Water supply temperature C C. Amunt f water l/h l/h Pressure drp water 0-10kPa 0-10kPa Sund level rm 35-40dB(A) 35-40dB(A)

29 2.6 Passive chilled beams Passive chilled beams are used t cl rms with high internal heat lads, withut supplying additinal ventilatin air. This means that the cling capacity can be adjusted specifically t the high heat lad withut this requiring unnecessary ventilatin air and nise prductin. The energetic benefits f water as transprt medium are used t maximum effect in cmbinatin with a high cmfrt level fr the rm. Passive chilled beams are extremely suitable fr special architectural slutins - as an additin t existing systems r during renvatins. Benefits: Yu can create an extremely cmfrtable ccupied zne; High cling capacity; Great architectural design freedm; Virtually insensitive t changes t the rm layut; N nise prductin; Applicable t renvatin prjects, fr example when an existing air-handling unit cannt supply additinal capacity. Passive chilled beams can als be used in additin t active chilled beams when additinal cling is required withut raising the ventilatin levels. The required air quality is realised with a separate ventilatin system. Passive units are less suitable fr heating rms, because the airflw remains hanging at the tp f the rm like a warm air layer (stratificatin effect). Hw is the unit cnstructed? Slid Air passive chilled beams - the OKNP type - cnsist f square husing f galvanised pwder-cated sheet steel, a heat exchanger and, depending n the versin, a perfrated face plate. Heat exchange mainly takes place as a result f natural cnvectin and thrugh radiatin t a limited extent. Passive units have a high cling capacity, which is determined by the temperature difference between the heat exchanger itself and the rm temperature. The temperature f the heat exchanger is determined by the water speed and the water temperature. A lwer water temperature increases the cling capacity, but is limited by the risk f cndensatin (see als Chapter 2.7) and draught. 27

30 H The height f the husing is imprtant t generating the natural cnvectin, cmparable with the height f a chimney. The chimney effect is caused by the reductin f the air vlume during cling which means it acquires a greater mass per m 3. As a result f this extra weight, the air descends. The lnger the chimney, the greater the weight f the air in this chimney (in relatin t the envirnment). The pressure difference is negligible between the tp and the bttm f the chimney/chilled beam. Halving the height f the mdel with H = 200mm results in a lss f cling capacity f apprx. 20%, as a result f this reduced chimney effect. Heat exchanger The heat exchanger has been designed especially fr ptimum heat exchange during this natural cnvectin. The air resistance has therefre been minimised with a large free distance between the cpper cling pipes and between the cling fins. The cpper pipes are in 1 rw and have a diameter f 12.7mm. The aluminium cling fins are thicker, fr better heat cnductin, and can be made dust free during cleaning (if required). The required water cnditins are the same as described in Chapter 2.5. Versins The OKNP passive chilled beam is available in 2 heights (H), being 200 and 300mm. Upn request, lwer husing heights are als available, but they will reduce the capacity. Architecturally, the OKNP can be used in three ways, being: suspended (substructure) integrated int the ceiling (built-in, T-bar munted) abve the ceiling (superstructure). Fr applicatins that are built-in r abve the ceiling, the supply f the rm air, which must be cled by means f natural cnvectin, must be guaranteed with ceiling diffusers r ceiling penings. Fr substructures, the rule f thumb is that the space between the ceiling and the tp f the chilled beam must be at least half f the chilled-beam width. If this space is just 1/3 f the chilled-beam width, the cling capacity decreases by 5%. With a space f 1/5 f the chilled-beam width, the cling capacity decreases by 15%. The OKNP is available in 3 types, with widths f 295mm, 445mm and 595mm. These types are standard available in six mdels with the fllwing lengths: 895mm 1795mm 1195mm 2395mm 1495mm 2995mm

31 2.7 Cnditined utdr air and cndensatin cntrl Befre utdr air is intrduced int the living and wrking areas, central cnditining is ften required r necessary. This depends n the number f persns in the rms (required ventilatin amunt), the determinatin f the maximum permitted relative humidity, and smetimes n extremely high thermal lads (if air is als used as an additinal cling medium due t the required capacity). Frm a cmfrt and cndensatin pint f view, the maximum recmmended undertemperature f the primary air/ ventilatin air is 10 C. If utside temperatures are lwer (in winter fr example), the air must be heated by an air-handling unit until the air supply is within this maximum temperature difference f 10 C in relatin t the rm temperature. It may als be necessary t dehumidify the air. In rder t prevent expensive and maintenance unfriendly cndensatin cntainers and drainage, the systems must be designed in a way that prevents cndensatin r drplet frmatin in the heat exchanger. T cntrl the air humidity it is imprtant t keep windws clsed as much as pssible (r t use windw cntact security t adjust the cling water circuit temperature). In the summer the habit is t pen the windws, which means that utdr air with a relatively high humidity enters, which increases the chance f cndensatin in cmbinatin with a high heat lad (and cnsequently a lw water temperature). 29

32 As an indicatin: air f 22 C and 35% % Sat cntains 006 kg/kg (winter cnditin: indr rm). air f 20 C and 60% % Sat cntains 008 kg/kg. air f 26 C and 80% % Sat cntains 017 kg/kg. The fllwing tw factrs influence cndensatin preventin: Cntrl f the air humidity f the ventilatin air. Humidifying is required in winter and dehumidifying in summer; Determinatin f the required temperature f the cling-water supply, which must be abve the dew-pint temperature. Measurements in practice have demnstrated that the lwest permissible cling-water supply temperature fr active chilled beams can be 1.5 degrees belw the calculated dew pint, whilst just aviding cndensatin. In practice, this 1.5 degrees is nt included in the determinatin f the cling-water supply, but serves as an extra safety margin fr unfreseen lads. Fr passive chilled beams the lwest permissible supply temperature must be 0.5 degrees abve the calculated dew pint. Examples f the lwest permissible cling-water temperatures when yu just avid cndensatin: chilled beam rm temperature C Saturatin % Sat. dew pint temperature C lwest permissible cling-water temperature C recmmended lwest cling-water temperature C ,5 16,5 active ,5 19, , passive ,5 20 The risk f cndensatin can be cntrlled actively by equipping the Slid Air chilled beams with cndensatin sensrs in the cling-water circuit. (prduct ptin) If the ventilatin-air temperature apprximates the dew pint, vapur-tight insulatin f the plenum is a recmmended ptin

33 2.8 Psitining chilled beams in rms Slid Air chilled beams can be split int 5 categries in terms f integratin and lcatin in the rm. 1. Integrated int the ceiling, 1 r 2 sided utflw (OKNI & OKNH) 2. Built int the wall, hrizntal utflw (OKNB) 3. Integrated int the ceiling, 1, 2,3 r 4 sided utflw (OKNM) 4. Suspended, 1 r 2 sided utflw (OKNV) 5. Integrated r suspended with vertical natural cnvectin as utflw (OKNP) All units have the cmmn benefit f lng utflw penings, which means a large amunt f air can be brught int the rm. The active chilled beams can use the Canda effect if the ceiling is near the utflwing air. The air is drawn against the ceiling and mixes with rm air thrugh inductin. This has 2 majr benefits, as it ensures gd mixing and temperature distributin f the rm air and the air velcity will be reduced cnsiderably utside the ccupied zne, t prevent r minimise draught phenmena. Take accunt f the influence f cld/warm facades and majr heat surces in the rm, such as cpiers, cmputers, and strng lighting (bulbs, halgen lamps). They can cause cnsiderable disruptin t the airflw at lcal level. Varius types f active chilled beams can be fitted with the ptinal flw pattern cntrl blades, which can turn the utlet directin up t 45 degrees. This enables an even better alignment f the airflws with each ther and prevents cunteracting flws. This ptin is als ideal if the layut f the rm is changed at a later stage, as it enables ptimisatin f the airflws t the new situatin. Develpments have been made fr integrating chilled beams in many ceiling systems. Fr instance, ptimum slutins are available fr T-bar ceilings, suspended ceilings, plasterbard ceilings, blind r cncealed mdular ceilings. Even when architects have develped tp-design ceilings, special tailred slutins can be develped and prduced. The ptimum ceiling design must take accunt f the integratin tlerances (f the utside cntur f the chilled beam) and the dimensins f any flanges. Fr every type f chilled beam, this has been set ut in the technical specificatins; see the fllwing Chapters and prduct sheets. 31

34 1. Integrated int the ceiling, 1 r 2 sided utflw There are varius versins f the OKNI and the OKNH t facilitate their integratin int the ceiling; see the fllwing paragraphs. There are tw pssible rientatins fr psitining in the ceiling, being perpendicular r parallel t the facade. 1a. Perpendicular t the facade This psitining methd is ften applied in Great Britain and in Scandinavian cuntries. The benefit is that it generally requires fewer units. Pints f attentin include: Greater risk f draught in the ccupied zne (clliding airflws); Nt s easy t cmpensate facade effects; Less flexibility in case f future changes in the use f the rm. 1b. Parallel t the facade Parallel psitins in relatin t the facade are applied frequently in Germany, the Netherlands and Belgium. There is ptimum ventilatin fr the entire rm. The flw against the facade cmpensates any negative effects caused by the facade. The air descends mainly via the facades and the walls t ensure the cnditined air reaches a large part f the ccupied zne. Psitining per mdule means that the rm can be laid ut differently at a later stage

35 2. Built int a bulkhead The OKNB has been develped especially fr being built int a bulkhead, just belw the ceiling. The air is drawn in vertically and flws ut hrizntally, preferably twards the facade. These units are ften used in htel rms (cmpact integratin int the suspended entrance ceiling). One unit wuld be used per htel rm r patient rm. 3. Integrated int the ceiling, 1, 2,3 r 4 sided angled utflw The cmfrt units, the OKNM, have a fur-sided utflw pattern, which means the rms have ptimum ventilatin and the air velcities are kept as lw as pssible. If several units are used in ne ceiling, they must be psitined in such a manner that the diffusing airflws d nt cllide but are psitined alngside each ther. 33

36 4. Suspended, 1 r 2 sided utflw The suspended units, the OKNV, ffer the architect a hst f ptins and are applied when there is n suspended ceiling. These units are the best chice fr gd cmfrt in areas with high ceilings. The psitining in relatin t each ther is gverned by the same design rules as under pint 1. The suspended units may even generate the required hrizntal utflw withut the presence f the ceiling, as the wings n either side f the OKNV als generate the required Canda effect. 5. Integrated r suspended with vertical natural cnvectin as utlet The efficient applicatin f passive chilled beams depends n the crrect psitining f the units in the rm in relatin t the different internal and external heat surces. Fr example, these units are applied near facades t neutralise heating caused by sunrays, in rder t btain a mre even temperature distributin in the rm. When passive chilled beams are cmbined with diffusers, it is imprtant that the cnvectin flw f the passive chilled beam is nt influenced. Cmbining passive chilled beams with wall displacement diffusers creates a cmfrtable indr climate thrugh the descending cnvectin flw mixed with a lw supply-air velcity. Passive chilled beams must nt be psitined abve the ccupied zne. If this cannt be prevented frm a layut pint f view, it is recmmended nt t psitin wrkstatins directly under these units t prevent draught cmplaints. If this psitining cannt be prevented, it is recmmended t psitin them abve the ceiling and t perfrate the ceiling, s that the descending airflw can be distributed t sme extent. A system can als be designed t be self-regulating t sme extent (i.e. withut a thermstat), when the water temperatures are chsen clse t the minimum rm temperature (e.g. water supply 19 C, water discharge 22 C)

37 35

38 2.9 Overview Slid Air chilled beams OKN range. standard active chilled beam cmfrt unit passive chilled beam custmmade chilled beam Versin OKNI OKNV OKNB OKNH OKNM OKNP specials Chapter 3 & Building type Office Hspital Htel Schl, university Halls Airprt, railway statin Integratin lcatin Omega-prfile ceiling Cve wall Plasterbard ceiling T-bar ceiling Suspended Nm. dimensins Lengths [mm] , Widths [mm] 300, 400, 450, , 450, Height Air-cnnectin diameter [mm] Functins Ventilatin Cling Heating Electric heating Extra functins Extravent Flw-cntrl pattern fr types 450 and 600 Cndensatin cntrl Capacity data fr types 450 and 600 Ventilatin air [m 3 /h] upn request Ventilatin air [l/s] 5,5-87 5,5-87 9,7-53 5,5-78 8,3-28 upn request Cling capacity air [W] Δ T10: Tr Tpri Cling capacity water [W/m] Δ T10: Tr Twi Heating capacity water [W]Δ T30: Twi Tr Heating capacity elec [W] (per unit) 770 (per unit) 1450 (per unit) (per unit 600x600) 470 (per unit 600x600) 1160 (per unit 600x600) upn request 440 upn request upn request 500 & & 1000 upn request

39 CHAPTER 3 Chilled beam OKNI 300 & 400 The Slid Air chilled beams OKNI 300 and 400 are active chilled beams fr use in suspended ceilings. Air-utflw directin: 2-sided Primary air cnnectin: side r tp Available in varius lengths, nzzle cnfiguratins and clurs Available fr mst mdular ceilings, including cncealed systems and permanent plaster ceilings. Applicatins: ffices htels hspitals meeting rms Functins: ventilatin cling heating Specificatins: type: 300 and 400 mdel: 1200, 1500, 1800, 2400, 3000 mm ventilatin: t 200 m 3 /h cling: t 370 W/m heating: water: 655 W/m electrical: 500 r 1000 W water flw: t 350 l/h. 37

40 3.1 Applicatin Cntents 3.1 Applicatin Operatin 41 The OKNI 300 and 400 have been designed as a cmpact chilled beam, with a lw built-in height; they have a high capacity and they are suitable fr ventilatin and cling and fr heating rms f 2.4 t 3.5 metres high. The units have the same capacities, but vary in width. The clsed units intrduces the supply air n tw sides and its highly efficient blw-in effect means it can be fitted in ffices in the middle f the rms parallel t the facade. The chice f varius nzzle types enables an ptimum cmbinatin f 3.3 Main dimensins, cnnectin sizes and integratin int the ceiling Versins and ptins Order cdes Installatin requirements and maintenance Selectin example and selectin details 50 ventilatin air and cling capacity in every situatin. 3.1 OKNI 38

41 Prperties and benefits f the OKNI 300 and 400: Applicatin in ffices, meeting rms, teaching rms, pen-plan ffices, general areas Lw built-in height Cmpact, which means it can be integrated int many mdular ceilings Cntrl the rm temperature by varying the amunt f water (cling and heating) 5 standard heat exchanger lengths Husing available in length intervals f 5 mm. Als available fr cncealed and permanent mdular ceilings Perfrated face gives the same lk as the Slid Air perfrated diffusers, prviding an aesthetic slutin Special versins are als pssible Heat exchanger fr cling, cling and heating (als electric heating) Quick adjustment f the ventilatin air/cling capacity cmbinatin. 39

42 The unit has been designed as an insert mdule fr mdular ceilings with a few T-bars r mega prfiles, with a mdule size f 300 r 400mm. The unit can als be used as an intermediate element in cffered ceilings r cncealed mdular ceilings. Every length available between 1140 and 2995 mm at intervals f 5 mm. The lw weight f the unit makes it easy t handle and integrate int mdular ceilings. The unit shuld be fitted with fall prtectin. Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at OKNI 40

43 3.2 Operatin OKNI 300 and 400 Intrductin f air thrugh nzzles frm a pressure chamber brings primary (ventilatin) air t a high velcity. This prduces a pwerful pump effect (inductin) and secndary air (rm air) is drawn in via the heat exchanger. When the air passes the heat exchanger, it is cled r heated in functin f the need in the rm. The tertiary airflw (the ttal f rm air and primary air) is brught int the rm thrugh integrated utflw penings. 41

44 Specificatins: Active chilled beam fr water-air systems with high thermal capacities, lw nise levels and a high cmfrt level. The wide range f edge cnstructins and standard dimensins make it suitable fr T-bar, integrated and cncealed ceilings. Available in 5 basic lengths and 2 width sizes. The lw height ( mm) means little lss f space when used in suspended ceilings. Suitable fr cling, ventilating and heating rms with a height f 2.4 t 3.5 m. Extremely suitable fr heating rms with lw warm-water temperatures f heat-pump systems. Heat exchangers available as a 2 r 4-pipe versin. Varius standard nzzle versins fr ptimum determinatin f the ventilatin air/recirculatin air rati. Extravent nzzle system is ptinal, which means after cmmissining the installatin, the capacity and ventilatin need can be adjusted easily t a changing use f the rms. The materials that are used are 100% recyclable. Husing is made frm galvanised sheet steel, f which the visible parts are painted with an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is manufactured frm cpper pipes, with aluminium cling fins, 100% leak-tightness tested at 15 bar. Husing: Material: galvanised sheet steel. Finish f visible parts: epxy paint standard clur white RAL Heat exchanger: Pipe material: cpper Fin material: aluminium Pst-treatment: nne Test pressure: 15 bar 3.2 OKNI 42

45 3.3 Main dimensins, cnnectin sizes and ceiling integratin Available dimensins and weights: (different widths and lengths available upn request). type mdel L frm/t mm OKNI 300 OKNI 300 extravent OKNI 400 B*) mm B1 mm B2 mm H mm / N B*: actual width, depending n the Medge cnfiguratin. H1 mm / / / / / / / / / / / / D mm M mm N mm P mm K mm T mm weight kg 150 N M N M M centres M M 6 fixing hle K 300 centres 6 fixing hle K L L L L L N N M H1 P P H1 15 D D D P B B 15 B2 B1 D D P B B2 B1 D B 40 T B H H H 40 T H H H L M B P D H mdel H H C C L C C H H B mdel H H C C 4 x O 12 mm C C H H cling: 2 x O 15 mm heating: 2 x O 12 mm

46 The selectin f the OKNI 300/400 chilled beam must take accunt f the fllwing tlerances f main dimensins in cmbinatin with the side-edge cnfiguratin t ensure an ptimum integratin int the ceiling. Example 1: OKNI in T-bar ceiling has a net external dimensin f: 293 t 297 mm, by 2991 t 2995 mm. Example 2: OKNI in superstructure versin has a net external dimensin (= minimum recess size) f: 293 t 297 mm, by 2291 t 2995 mm. The ver the flange size is: 333 t 337 mm, by 3031 t 3035 mm. OKNI type 300 / 400 side-edge cnfiguratin: Dimensins and tlerances main dimensins Actual width B chilled beam: Actual length L chilled beam: dimensins in mm, tlerance +/- 2.0 mm tlerance +0 / -4 mm 1 T-bar (insert) ceilings Detail A L 1140 t 2995 L 1140 t 2995 L 1140 L 1140 t t L 1140 L 1140 t 2995 t Slid ceiling versin permanent ceilings Detail B L 1140 t 2995 L 1140 t 2995 L 1140 L 1140 t t Cncealed mdular ceilings Detail C L 1140 L 1140 t 2995 t OKNI 44

47 3.4 Versins and ptins Extravent The chilled beam type OKNI extravent is a chilled beam that can be set later, it has additinal nzzles that allw a grup change frm small t large nzzles. It is perated at the frnt by sliding a magnetic clsing strip. This patented system guarantees cmplete clsure and prevents undesirable nise prductin. The use f extravents allws significant adjustments t the primary air quantity withut the unit mving utside its perating range n the air r the water side. Changing an ffice area int a meeting rm, r the ther way arund, at a later stage is easy with this unit, withut having t change the air system. Yu nly need t change the setting f the primairy air-vlume. Electric heating The OKNI types 300 and 400 can be supplied with electric heating, and there is a chice between a 500 r a 1000 Watt heating capacity. Nzzle cnfiguratins This catalgue lists 3 standard nzzles. Other nzzle cnfiguratins are als pssible in cnsultatin with Slid Air. Different lengths Every length available between 1140 and 2995 mm at intervals f 5 mm. Asymmetrical discharge pattern In a 1-sided utlet unit, the nzzles are n ne f the discharge sides. This means the unit can nly handle half f the air quantity that crrespnds t the chsen nzzle, which reduces the heat exchanger capacity. Cnsult ur specialists fr mre infrmatin. 45

48 CHAPTER 3.5 Order cdes OKNI 300 and 400 utlet n the right RIGHT Left/right psitin: standing in the directin f the water cnnectins A n the ppsite side A water cnnectins air cnnectin n the left LEFT Example rder cde: OKNI 300 / 1200 C2V4 LO31 O1O 295x Versin OKNI 2 Type Mdel Nzzle cnfiguratin A1 B2 C2 BD 1 Extravent 5 Heat exchanger K Cling V Cling & Heating O Nne (Dummy) L Water-side cling & Electric heating 500W M Water-side cling & Electric heating 1000W 6 Discharge cnfiguratin 2 Tw-sided discharge 3 One-sided left discharge 4 One-sided right discharge 7 Air cnnectin T Tp L Left R Right 8 Water cnnectin O Standard 9 Diameter air cnnectin 3 125mm (Std fr mdel 1200, 1500, 1800) 4 160mm (Std fr mdel 2400, 3000) 10 Plenum versin 1 T=40mm plenum height 2 T=60mm fr extravent and L = 3000 mm 11 Diffuser O Nt applicable 12 Edge cnfiguratin 1 Suitable fr T-bar (munted) 2 Superstructure versin permanent ceilings 3 Cncealed 13 FPC O Nt applicable 14 Actual width B 295 Depending n the type and side-edge cnfiguratin (excl. flange edge) Actual length L 1195 Depending n mdel size 1140 t Clur (RAL) 9010 (standard) 17 Glss value 55% (standard) 1 ) Nzzle type BD (extravent) nly pssible fr mdels 1200, 1500 & AND 3.5 OKNI 46

49 3.6 Installatin requirements and maintenance Fitting The unit has been designed as an insert mdule (dimensins 300 and 400mm) fr T-bar ceilings, plaster ceilings, cncealed mdular ceilings and fine-line mdular ceilings. The lw weight f the unit makes it easy t handle in mdular ceilings. The unit shuld be fitted with fall prtectin. The suspensin pints are nted n the dimensinal sketches earlier in this Chapter. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectr-specific requirements that apply t fitting air and water-side accessries. Unpacking and handling the unit must be dne carefully. We recmmend that every unit is lifted by 2 fitters by picking it up at the head end. The lnger and heavier units in particular shuld nt be lifted by the lng sides, because they culd bend. It is custmary t suspend the unit at 4 pints and at 6 pints frm a length f 2000mm. They can be suspended with rds, cable braid, chains r metal hks. The air intake is cnnected t the central ventilatin system with a flexible acustic-insulating duct that is als thermally insulated. The flexible duct is clamped t the air intake f the unit with a duct clip, fllwing which the cnnectin can be taped dwn withut tensin. Fr practical reasns the water pipes are usually cnnected with flexible hses t the cld and warm-water circuits f the units. Fr the cld-water circuit, nted with the marking C (Cld), there is n specific preference fr inlet r utlet; the same applies t the ht-water circuit, marked with H (Ht). Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r push fit with duble O-ring seals. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat-exchanger circuit and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cld-water pipe because f the risk f cndensatin. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water velcity: m/s The lcal flw velcity in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. 47

50 Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Maintenance Depending n the quality f the rm air, the air may cntain varius levels f dust particles and ther cntaminatin. As the rm air is recirculated thrugh the units, the crrespnding electrstatic effect may cause this dirt t build up in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. Fr cleaning purpses, ur patented cnstructins allws the frnt f the heat exchanger t be remved easily and withut tls. This wrks as fllws: Push the perfrated part f the middle segment, in the middle, next t ne f the ends, apprximately 5 mm up. At the same time, push the entire middle segment lengthways int the relevant end. The ther side f the middle segment is nw released frm the ppsite end and can be remved frm the unit. It remains cnnected t the unit with tw steel safety cables. Clean the surfaces with an industrial vacuum cleaner, fitted with a sft brush. Make sure yu d nt bend the aluminium fins f the heat exchanger. Pints f attentin: If the units are fitted with electric heating, the units must be switched ff befre cleaning r any maintenance. Fit in reverse rder. Check that the mid frnt is stable n the ends and nt n ne f the side prjectins 3.6 OKNI 48

51 Explanatin f abbreviatins: parameter unit explanatin V prim l/s r m 3 /h primary airflw (= fresh air) t pri C temperature f the primary airflw t rm C temperature f the rm t water in C temperature f the water n entry int the heat exchanger Sat % percentage saturatin Q l W supplied cling capacity f the primary air P s Pa static pre-pressure L w db[a] sund pwer level f the unit V w l/h amunt f water in litres per hur ΔP w kpa water-side pressure drp ver the heat exchanger Q wk W supplied cling capacity water side Q ww W supplied heating capacity water side Δ tw C difference between incming and utging temperature ver the heat exchanger Q t W supplied capacity by heat exchanger and primary air quick selectin: L 9 C difference between rm temperature and primary air temperature is 9 C W 9 C difference between rm temperature and water-entry temperature is 9 C W 10 C difference between rm temperature and water-entry temperature is 10 C 49

52 3.7 Selectin example and selectin details Standard ffice rm fr 2 peple (LxWxH) 5.4 x 3.6 x 2.7m Requirement: Ventilatin rate duble ventilatin Cling capacity 1070 Watt Heating capacity 920 Watt Temperatures: Summer: Rm (t rm, 50% Sat) 25 C Primary air (t pri ) 16 C Cling water (t water in ) 15 C Winter: Rm (t rm ) 20 C Primary air (t pri ) 30 C Heating water (t water in ) 45 C This means: Summer: Temperature difference air side (t rm- t pri ) 9 C (L 9 ) Temperature difference water side (t rm- t water in ) 10 C (W 10 ) Winter: Temperature difference air side (t pri- t rm ) 10 C Temperature difference water side (t water in- t rm ) 25 C The rm dimensins and duble ventilatin means a required air supply amunt f 110 m 3 /h. On the basis f the rm width, tw mdel 1800 units can be fitted. This means: Primary air per chilled beam: 55 m 3 /h Required cling capacity per unit (1070/2 ): 535 Watt Required heating capacity per unit (920/2 ): 460 Watt The next page cntains the selectin table fr the OKNI type 300 and 400 mdel 1800: The table is split int tw parts - ne part with air-side details (left side f the table) and ne part with water-side details (right side). The ttal capacity f a chilled beam is the sum f the air-side capacity and the water-side capacity. Fr the tw cmmn temperature cnditins L 9 W 9 and L 9 W 10, the ttal capacity has been included in the dark-blue clumns. These quick-selectin clumns shw yu instantly whether the maximum available capacities are enugh fr yur selectin example. 3.7 OKNI 50

53 Selectin example OKNI - type 300 and mdel 1800 COOLING Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, On the basis f the amunt f air, the chice is fr: Nzzle B2: 1 Primary air 55 m 3 /h 2 Required static pressure Ps 91 Pa. 3 Sund pwer level Lw 29 db(a). 4 Air-side capacity (based n L 9 ) 166 Watt 5 Water-side capacity at 6 80 l/h (based n W 10 ) 369 Watt 7 Ttal cling capacity per unit 535 Watt As the stated temperature cnditins match exactly with the temperature cnditins L 9 W 10, the far right clumn lists the ttal capacity f 535 Watt. This is exactly the required capacity. 51

54 Selectin example OKNI - type 300 and mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Fr the heating data, the fllwing applies: Nzzle B2: 1 Primary air 55 m 3 /h 2 Air-side capacity (based n L10) 185 Watt 3 Water-side capacity at 4 50 l/h (based n W25) 679 Watt Ttal heating capacity per unit 864 Watt This supplied heating capacity is mre than enugh, the required capacity per unit is 460 Watt. With increasingly mdern facade technlgy, which keeps the heat in better, capacity ften des nt need t be brught in air side. The primary air temperature is ften equal t the required rm air temperature. This makes the capacity supplied n the air side equal t zer. 3.7 OKNI 52

55 Perfrmance data OKNI - type 300 and mdel 1200 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

56 Perfrmance data OKNI - type 300 and mdel 1200 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 54

57 Perfrmance data OKNI - type 300 and mdel 1500 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

58 Perfrmance data OKNI - type 300 and mdel 1500 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 56

59 Perfrmance data OKNI - type 300 and 400- mdel 1800 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

60 Perfrmance data OKNI - type 300 and mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 58

61 Perfrmance data OKNI - type 300 and mdel 2400 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

62 Perfrmance data OKNI - type 300 and mdel 2400 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 60

63 Perfrmance data OKNI - type 300 and mdel 3000 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

64 Perfrmance data OKNI - type 300 and mdel 3000 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 62

65 CHAPTER 4 Chilled beam OKNI 450 & 600 The Slid Air chilled beams OKNI 450 and 600 are active chilled beams fr use in suspended ceilings. Air-utflw directin: 2-sided, Primary air cnnectin: side r tp Available in varius lengths, nzzle cnfiguratins and clurs Available fr mst mdular ceilings, including cncealed systems and permanent plaster ceilings. Applicatins: ffices htels hspitals meeting rms Functins: ventilatin cling heating Specificatins: type: 450 r 600 mdel: 1200, 1500, 1800, 2400, 3000 ventilatin: t 280 m 3 /h cling: t 675 W/m heating: water: 1675 W/m electrical: 500 r 1000 W water flw: t 300 l/h. 63

66 4.1 Applicatin The OKNI 450 and 600 have been designed as a cmpact chilled beam, with a lw built-in height; they have a high capacity and they are suitable fr ventilatin and cling and fr heating rms f 2.4 t 3.5 metres high. The units have the same capacities, but vary in width. The clsed units intrduces the supply air n tw sides and its highly efficient blw-in effect means it can be fitted in ffices in the middle f the rms parallel t the facade. The chice f varius nzzle types enables an ptimum cmbinatin f Cntents 4.1 Applicatin Operatin, 67 specificatin 4.3 Main dimensins, 69 cnnectin sizes and integratin int the ceiling 4.4 Versins and ptins Order cdes Installatin 73 requirements and maintenance 4.7 Selectin example and 75 selectin details ventilatin air and cling capacity in every situatin. 4.1 OKNI 64

67 Prperties and benefits f the OKNI 450 and 600 Applicatin in ffices, meeting rms, teaching rms, pen-plan ffices, general areas Wider heat exchanger fr greater water-side capacity emissin Heat exchangers fr cling, cling and heating (als electric heating) Versins pssible with extravent nzzle system Pssibility fr applicatin FPC (flw pattern cntrl) utlet directin elements Cntrl the rm temperature by varying the amunt f water (cling and heating) CO 2 cntrl pssible with VAV air cntrl 5 standard heat exchanger lengths Husing lengths in intervals f 5mm Als available fr cncealed ceiling systems Perfrated face gives the same lk as the Slid Air perfrated diffusers, prviding an aesthetic slutin Mdificatins t special versins are als pssible 65

68 The unit has been designed as an insert mdule fr mdular ceilings with a few T-bars r mega prfiles, with a mdule size f 450 r 600mm. The unit can als be used as an intermediate element in cffered ceilings r cncealed mdular ceilings. Every length available between 1090 and 2995 mm at intervals f 5 mm. The lw weight f the unit makes it easy t handle and integrate int mdular ceilings. The unit shuld be fitted with fall prtectin. Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at OKNI 66

69 4.2 Operatin OKNI 450 and 600 Intrductin f air thrugh nzzles frm a pressure chamber brings primary (ventilatin) air t a high velcity. This prduces a pwerful pump effect (inductin) and secndary air (rm air) is drawn in via the heat exchanger. When the air passes the heat exchanger, it is cled r heated in functin f the need in the rm. The tertiary airflw (the ttal f rm air and primary air) is brught int the rm thrugh integrated utflw penings. 67

70 Specificatins: Active chilled beam fr water-air systems with high thermal capacities, limited nise levels and a high cmfrt level. The wide range f edge ptins and standard dimensins makes it suitable fr T-bar, integrated, cncealed and permanent ceilings. Available in 5 basic lengths and 2 width sizes. Lw height f mm. Suitable fr cling, ventilating and heating rms with a height f 2.4 t 3.5m. Suitable fr heating rms with lw warm-water temperatures f heat-pump systems. Heat exchangers available as a 2 r 4-pipe versin. Varius standard nzzle versins fr ptimum determinatin f the ventilatin air/recirculatin air rati. Extravent nzzle system is ptinal, which means after cmmissining the installatin, the capacity and ventilatin need can be adjusted easily t a changing use f the rms. visible parts are painted with an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is made frm cpper pipes with aluminium cling fins. Leaktightness 100% tested at 15 bar. Husing: Material: galvanised sheet steel. Finish f visible parts: epxy paint standard clur white RAL Heat exchanger: Pipe material: cpper Fin material: aluminium Pst-treatment: nne Test pressure: 15 bar The materials that are used are 100% recyclable. Husing is made frm galvanised sheet steel, f which the 4.2 OKNI 68

71 4.3 Main dimensins, cnnectin sizes and ceiling integratin Available dimensins and weights: (different widths and lengths available upn request). type mdel L frm/t mm OKNI 450 OKNI 450 extravent OKNI 600 OKNI 600 extravent B*) mm B1 mm B2 mm H mm H1 mm / / / / / / / / / / / / / N / M / / D B*: actual width, depending n the edge cnfiguratin. P M M M M 300 centres 300 centres 6 fixing hle 35 M N N 300 centres 6 fixing hle K K L L L L L N L N M D mm M M mm H1 N mm P P H1 15 P mm D D 15 P K mm B2 B1 D B D B B T mm B2 B1 D B 40 T B B H H H weight kg 40 T H H H mdel C H H C L C C H H P D B H mdel H H H H C C 4 x O 12 mm C C C H H H H cling: 2 x O 15 mm heating: 2 x O 12 mm

72 The selectin f the OKNI 450/600 chilled beam must take accunt f the fllwing tlerances f main dimensins in cmbinatin with the side-edge cnfiguratin t ensure an ptimum integratin int the ceiling. Example 1: OKNI in T-bar ceiling has a net external dimensin f: 593 t 597 mm, by 2991 t 2995 mm. Example 2: OKNI in plaster ceiling versin has a net external dimensin (= minimum recess size) f: 598 t 602mm, by 2991 t 2995mm. The ver the flange size is: 598 t 602 mm, by 3031 t 3035 mm. OKNI type 450 / 600 side-edge cnfiguratin: Dimensins and tlerances main dimensins Actual width B chilled beam: Actual length L chilled beam: dimensins in mm, tlerance +/- 2.0 mm tlerance +0 / -4 mm 1 T-bar (insert) ceilings Detail A L 1090 t 2995 L 1090 t 2995 L 1090 t Superstructure versin permanent ceilings Detail B B 485 / 600 B 485 B / 600 B 485 / 600B B L 1130 t 3035 L 1130 t 3035 L 1130 t Cncealed mdular ceilings Detail C 4.3 OKNI 70

73 4.4 Versins and ptins Extravent The chilled beam type OKNI extravent is a chilled beam that can be set later, it has additinal nzzles that allw a grup change frm small t large nzzles. It is perated at the frnt by sliding a magnetic clsing strip. This patented system guarantees cmplete clsure and prevents undesirable nise prductin. The use f extravents allws significant adjustments t the primary air quantity withut the unit mving utside its perating range n the air r the water side. Changing an ffice area int a meeting rm, r the ther way arund, at a later stage is easy with this unit, withut having t change the air system. Yu nly need t change the setting f the primary air-vlume. Electric heating The OKNI types 450 and 600 can be supplied with electric heating, and there is a chice between a 500 r a 1000 Watt heating capacity. Nzzle cnfiguratins This catalgue lists 3 standard nzzles. Other nzzle cnfiguratins are als pssible in cnsultatin with Slid Air. Different lengths Every length available between 1090 and 2995 mm at intervals f 5 mm. Flw Pattern Cntrl (FPC) The OKNI active chilled beams can be fitted with the ptinal flw pattern cntrl blades, which can turn the utflw directin up t 45 degrees. This enables an even better alignment f the airflws with each ther and prevents cunteracting flws. This ptin is als ideal if the layut f the rm is changed at a later stage, as it enables ptimisatin f the airflws t the new situatin. Asymmetrical utflw pattern In a 1-sided utflw unit, the nzzles can be left ff n ne f the utflw sides. This means the unit can nly let thrugh half f the air quantity that crrespnds t the chsen nzzle, which reduces the heat-exchanger capacity. Cnsult ur specialists fr mre infrmatin. 71

74 4.5 Order cdes OKNI 450 and 600 utflw n the right RIGHT Left/right psitin: standing in the directin f the water cnnectins A n the ppsite side A water cnnectins air cnnectin n the left LEFT Example rder cde: OKNI 450 / 1200 C2V4 LO32 O1O 445x Versin OKNI 2 Type Mdel Nzzle cnfiguratin A1 B2 C2 AD 1 Extravent 5 Heat exchanger K Cling V Cling & Heating O Nne (Dummy) L Water-side cling & Electric heating 500W M Water-side cling & Electric heating 1000W 6 Discharge cnfiguratin 2 Tw-sided discharge 3 One-sided left discharge 4 One-sided right discharge 7 Air cnnectin T Tp L Left R Right 8 Water cnnectin O Standard 9 Diameter air cnnectin 3 125mm (Std fr mdel 1200, 1500, 1800) 4 160mm (Std fr mdel 2400) 5 200mm (Std fr mdel 3000) 10 Plenum versin 2 T=60mm plenum height 3 T=80mm fr extravent versin 11 Diffuser O Nt applicable 12 Edge cnfiguratin 1 Suitable fr T-bar (munted) 2 Superstructure versin permanent ceilings 3 Cncealed 13 FPC F FPC O N FPC 14 Actual width B 445 Depending n the type Actual length L 1195 Depending n mdel size 1140 t Clur (RAL) 9010 (standard) 17 Glss value 55% (standard) 1 ) Nzzle type AD (Extravent) nly pssible fr mdels 1200, 1500 & AND 4.5 OKNI 72

75 4.6 Installatin requirements and maintenance Fitting The unit has been designed as an insert mdule fr T-bar ceilings, plaster ceilings, cncealed mdular ceilings and fine-line mdular ceilings. The lw weight f the unit makes it easy t handle in mdular ceilings. The unit shuld be fitted with fall prtectin. The suspensin pints are nted n the dimensinal sketches earlier in this Chapter. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectrspecific requirements that apply t fitting air and water-side accessries. Unpacking and handling the unit must be dne carefully. We recmmend that every unit is lifted by 2 fitters by picking it up at the head end. The lnger and heavier units in particular shuld nt be lifted by the lng sides, because they culd bend. It is custmary t suspend the unit at 4 pints and at 6 pints frm a length f 2000mm. They can be suspended with rds, cable braid, chains r metal hks. The air intake is cnnected t the central ventilatin system with a flexible acustic-insulating hse that is als thermally insulated. The flexible hse is clamped t the air intake f the unit with a hse clip, fllwing which the cnnectin can be taped dwn withut tensin. Fr practical reasns the water pipes are usually cnnected with flexible hses t the cld and warm-water circuits f the units. Fr the cld-water circuit, nted with the marking C (Cld), there is n specific preference fr inlet r utlet; the same applies t the ht-water circuit, marked with H (Ht). Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r duble scket cuplings with duble O-ring seals. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat exchanger, and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cldwater pipe because f the risk f cndensatin. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water velcity: m/s The lcal flw velcity in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezin. If this cannt be guaranteed, anti-freeze fluid must be added. 73

76 Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Maintenance: Depending n the quality f the rm air, rm air may cntain varius levels f dust particles and ther cntaminatin. As the rm air is recirculated thrugh the units, the crrespnding electrstatic effect may cause this dirt t build up in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. Fr cleaning purpses, ur patented cnstructins allws fr the frnt f the heat exchanger t be remved easily and withut tls. This wrks as fllws: Push the perfrated part f the middle segment, in the middle, next t ne f the ends, apprximately 5 mm up. At the same time, push the entire middle segment lengthways int the relevant end. The ther side f the middle segment is nw released frm the ppsite end and can be remved frm the unit. It remains cnnected t the unit with tw steel safety cables. Clean the surfaces with an industrial vacuum cleaner, fitted with a sft brush. Make sure yu d nt bend the aluminium fins f the heat exchanger. Pints f attentin: If the units are fitted with electric heating, the units must be switched ff befre cleaning. Fit in reverse rder. Check that the mid frnt is stable n the ends and nt n ne f the side prjectins. 4.6 OKNI 74

77 4.7 Selectin example and selectin details Explanatin f abbreviatins: parameter unit explanatin V prim l/s r m 3 /h primary airflw (= fresh air) t pri C temperature f the primary airflw t rm C temperature f the rm t water in C temperature f the water n entry int the heat exchanger Sat % percentage saturatin Q l W supplied cling capacity f the primary air P s Pa static pre-pressure L w db[a] sund pwer level f the unit V w l/h amunt f water in litres per hur ΔP w kpa water-side pressure drp ver the heat exchanger Q wk W supplied cling capacity water side Q ww W supplied heating capacity water side Δ tw C difference between incming and utging temperature ver the heat exchanger Q t W supplied capacity by heat exchanger and primary air quick selectin: L 9 C difference between rm temperature and primary air temperature is 9 C W 9 C difference between rm temperature and water-entry temperature is 9 C W 10 C difference between rm temperature and water-entry temperature is 10 C 75

78 Selectin example OKNI - type 450 and 600 Crner ffice rm fr 2 peple (LxWxH) 5.4 x 3.6 x 2.7 m Requirement: Ventilatin air fr the rm 160 m 3 /h Cling capacity 1650 Watt Heating capacity 1600 Watt Temperatures: Summer: Rm (t rm, 50% Sat) 25 C Primary air (t pri ) 16 C Cling water (t water in ) 15 C Winter: Rm (t rm ) 20 C Primary air (t pri ) 20 C Heating water (t water in ) 40 C This means: Summer: Temperature difference air side (t rm -t pri ) 9 C (L9) Temperature difference water side (t rm -t water in ) 10 C (W 10 ) Winter: Temperature difference air side (t pri -t rm ) 0 C Temperature difference water side (t water in -t rm ) 20 C On the basis f the rm width, tw mdel 1800 units can be fitted. This means: Primary air per chilled beam: 80 m 3 /h Required cling capacity per unit (1650/2 ): 825 Watt Required heating capacity per unit (1600/2 ): 800 Watt On the next page there is a selectin table fr OKNI type 600 mdel 1800: The table is split int tw parts - ne part with air-side details (left side f the table) and ne part with water-side details (right side). The ttal capacity f a chilled beam is the sum f the air-side capacity and the water-side capacity. Fr the tw cmmn temperature cnditins L 9 W 9 and L 9 W 10, the ttal capacity has been included in the dark-blue clumns. These quick-selectin clumns shw yu instantly whether the maximum available capacities are enugh fr yur selectin example. 4.7 OKNI 76

79 Selectin example OKNI - type 450 and mdel 1800 COOLING Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, On the basis f the required amunt f air f 80 m3/h, nzzle type B2 is chsen. The details wuld be: Nzzle B2: 1 Primary air 80 m3/h 2 Required static pressure Ps 86 Pa. 3 Sund pwer level Lw 21 db(a). 4 Air-side capacity (based n L 9 ) 242 Watt 5 Water-side capacity at l/h (based n W 10 ) 586 Watt 7 Ttal cling capacity per unit 828 Watt As the stated temperature cnditins match exactly with the temperature cnditins L 9 W 10, the far right clumn lists the ttal capacity f 828 Watt. This is 3 Watt mre than the required capacity. 77

80 Selectin example OKNI - type 450 and mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Fr the heating data, the fllwing applies: Nzzle B: 1 Primary air 80 m 3 /h Air-side capacity based n L0 (nt in table) 0 Watt Water-side capacity at 2 70 l/h (based n W20) 811 Watt 3 Ttal heating capacity per unit 811 Watt With increasingly mdern facade technlgy, which keeps the heat in better, capacity ften des nt need t be brught in air side. The primary air temperature is then equal t the required rm air temperature. In this situatin, the water valve will be cntrlled up t apprximately 70 l/h t supply the required 800 Watt. 4.7 OKNI 78

81 Perfrmance data OKNI - type 450 and mdel 1200 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

82 Perfrmance data OKNI - type 450 and mdel 1200 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 80

83 Perfrmance data OKNI - type 450 and mdel 1500 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

84 Perfrmance data OKNI - type 450 and mdel 1500 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 82

85 Perfrmance data OKNI - type 450 and mdel 1800 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

86 Perfrmance data OKNI - type 450 and mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 84

87 Perfrmance data OKNI - type 450 and mdel 2400 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

88 Perfrmance data OKNI - type 450 and mdel 2400 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 86

89 Perfrmance data OKNI - type 450 and mdel 3000 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

90 Perfrmance data OKNI - type 450 and mdel 3000 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNI 88

91 CHAPTER 5 Chilled beam OKNV 300 & 450 The Slid Air OKNV 300 and 450 are active chilled beams fr suspended applicatins. Air-utflw directin: 2-sided, Primary air cnnectin: side r tp Available in varius lengths, nzzle cnfiguratins and clurs Applicatins: ffices htels hspitals meeting rms Functins: ventilatin cling heating Specificatins: type: 300 and 450 width: 595 and 745 mm mdel: 1200, 1500, 1800, 2400, 3000 ventilatin: t 280 m 3 /h cling: t 675 W/m heating: water: 1675 W/m electrical: 500 r 1000 W water flw: t 300 l/h. 89

92 5.1 Applicatin The OKNV 300 and 450 have been designed fr suspended applicatins. This prvides the architect with a large amunt f freedm and allws the creatin f a virtual ceiling. These high-capacity cmpact chilled beams are suitable fr ventilatin and cling and fr heating rms f 2.4 t 3.5 metres high. The clsed unit intrduces the supply air int the rm n tw sides, its highly efficient discharge means it can be fitted in ffices in the middle f the rms parallel t the facade. The Cntents 5.1 Applicatin Operatin, specificatins Main dimensins and cnnectin sizes Versins and ptins Order cdes Installatin requirements and maintenance Selectin example and selectin details 99 chice f varius nzzle types enables an ptimum cmbinatin f ventilatin air and cling capacity in every situatin. 5.1 OKNV 90

93 Prperties and benefits: Applicatin in ffices, meeting rms, teaching rms, pen-plan ffices, general areas Suitable fr rms withut mdular ceilings 5 standard heat-exchanger lengths Heat exchangers fr cling and heating (als electric heating) Rm temperature cntrlled with amunt f water (cling and heating) CO2 cntrl pssible with VAV air cntrl Besides the standard heat exchanger, a wider ne is als available fr a higher emissin n the water side Husing lengths in intervals f 5 mm Mdificatins t special versins are als pssible The OKNV can be applied in a mdern, dynamic ffice withut a ceiling. Rms in an ffice building are changed increasingly ften in terms f use r layut. Flexibility in relatin t the climate-cntrl system is a requirement fr an ptimum and efficient indr climate. Using the OKNV means there is a slutin, even later. Every length available between 1140 and 2995mm at intervals f 5mm. The lw weight f the unit makes it easy t fit Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at 91

94 5.2 Operatin OKNV 300 and 450 Intrductin f air thrugh nzzles frm a pressure chamber brings primary (ventilatin) air t a high velcity. This prduces a pwerful pump effect (inductin) and secndary air (rm air) is drawn in via the heat exchanger. When the air passes the heat exchanger, it is cled r heated in functin f the need in the rm. The tertiary airflw (the ttal f rm air and primary air) is brught int the rm thrugh integrated utflw penings. The slightly rising side edges create underpressure, just as a suspended ceiling des, which draws the airflw t the side edges and this creates a hrizntal utflw prfile (Canda effect). Specificatins: Active chilled beam fr water-air systems with high thermal capacities, lw nise levels and a high cmfrt level. Canda effect due t special edge cnfiguratin. Suspended applicatin. Available in 5 basic lengths and 2 width sizes. Suitable fr cling, ventilating and heating rms with a height f 2.4 t 3.5m. Suitable fr heating rms with lw warm-water temperatures f heat-pump systems. Heat exchangers available as a 2 r 4-pipe versin. Varius standard nzzle versins available fr ptimum determinatin f the ventilatin air/recirculatin air rati. Extravent nzzle system is available, which means after cmmissining the installatin, the capacity and ventilatin need can be adjusted easily t a changing use f the rms. The materials that are used are 100% recyclable. Husing is made frm galvanised sheet steel, f which the visible parts are painted with an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is made frm cpper pipes with aluminium cling fins. Leaktightness 100% tested at 15 bar. Husing: Material: galvanised sheet steel. Finish f visible parts: epxy paint standard clur white RAL Heat exchanger: Pipe material: cpper Fin material: aluminium Pst-treatment: nne Test pressure: 15 bar 5.2 OKNV 92

95 5.3 Main dimensins, cnnectin sizes and ceiling integratin Available dimensins and weights: type mdel L frm/t mm OKNV 300 OKNV 450 B*: actual width. B*) mm B1 mm B2 mm H mm H1 mm / / / / / / / / / / D mm M mm N mm P mm K mm T mm weight kg M 6 fixing hle K centres 40 H1 40 T H L M N B 40 D H P L B N M 40 D H P L B 93

96 OKNV type 300 mdel mdel OKNV type 450 mdel mdel OKNV type 300 / 450 side-edge cnfiguratin: Dimensins and tlerances main dimensins Actual width B chilled beam: dimensins in mm, tlerance +/- 2.0 mm Actual length L chilled beam: tlerance +0 / -4 mm OKNV type 300 L 1140 t 2995 OKNV type 450 L 1090 t OKNV 94

97 5.4 Versins and ptins Nzzle cnfiguratins This catalgue lists 3 standard nzzles. Other nzzle cnfiguratins are als pssible in cnsultatin with Slid Air. Extravent The OKNV chilled beam can be fitted with additinal nzzles that allw a grup change frm small t large nzzles. It is perated at the frnt by sliding a magnetic clsing strip. This patented system guarantees cmplete clsure and prevents undesirable nise prductin. The use f extravents allws significant adjustments t the primary air quantity withut the unit mving utside its perating range n the air r the water side. Changing an ffice area int a meeting rm, r the ther way arund, at a later stage is easy with this unit, withut having t change the air system. Yu nly need the change the setting f the air-vlume valve. Flw Pattern Cntrl (FPC) The OKNV type 450 active chilled beams can be fitted with the ptinal flw pattern cntrl blades, which can turn the utflw directin up t 45 degrees. This enables an even better alignment f the airflws with each ther and prevents cunteracting flws. This ptin is als ideal if the layut f the rm is changed at a later stage, as it enables ptimisatin f the airflws t the new situatin. Electric heating The OKNV types 300 and 450 can be supplied with electric heating, and there is a chice between a 500 r a 1000 Watt heating capacity. Different lengths Every length available between 1140 and 2995 mm at intervals f 5 mm. Asymmetrical utflw pattern In a 1-sided utlet unit, the nzzles can be left ff n ne f the utflw sides. This means the unit can nly let thugh half f the air quantity that crrespnds t the chsen nzzle, which reduces the heat-exchanger capacity. Cnsult ur specialists fr mre infrmatin. 95

98 5.5 Order cdes OKNV 300 and 450 RIGHT Left/right psitin: standing in the directin f the water cnnectins A n the ppsite side A water cnnectins LEFT Example rder cde: OKNV 450 / 1200 C2V2 TO31 OOO 595x Versin OKNV 2 Type Mdel Nzzle cnfiguratin A1 B2 C2 5 Heat exchanger K Cling V Cling & Heating O Nne (Dummy) L Water-side cling & Electric heating 500W M Water-side cling & Electric heating 1000W 6 Discharge cnfiguratin 2 Tw-sided discharge 3 One-sided left discharge 4 One-sided right discharge 7 Air cnnectin T Tp L Left R Right 8 Water cnnectin O Standard 9 Diameter air cnnectin mm (Std fr mdel 1200, 1500, 1800) mm (Std fr mdel 2400, 3000) mm (Std fr mdel 3000 type 450) 10 Plenum versin 1 T=40 mm plenum height 2 T=60 mm 11 Diffuser O Nt applicable 12 Edge cnfiguratin O Nt applicable 13 FPC F FPC (nly fr type 450) O N FPC 14 Actual width B 595 Depending n the type and side-edge cnfiguratin (excl. flange edge) Actual length L 1195 Depending n mdel size 1140 t Clur (RAL) 9010 (standard) 17 Glss value 55% (standard) 5.4 AND 5.5 OKNV 96

99 5.6 Installatin requirements and maintenance Fitting The OKNV has been designed as a suspended unit. The lw weight f the unit makes it easy t handle. The suspensin pints are nted n the dimensinal sketches earlier in this Chapter. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectr-specific requirements that apply t fitting air and water-side accessries. Unpacking and handling the unit must be dne carefully. We recmmend that every unit is lifted by 2 fitters by picking it up at the head end. The lnger and heavier units in particular shuld nt be lifted by the lng sides, because they culd bend. It is custmary t suspend the unit at 4 pints and at 6 pints frm a length f 2000mm. They can be suspended with rds, cable braid, chains r metal hks. The air intake is cnnected t the central ventilatin system with a flexible acustic-insulating duct that is als thermally insulated. The flexible duct is clamped t the air intake f the unit with a duct clip, fllwing which the cnnectin can be taped dwn withut tensin. Fr practical reasns the water pipes are usually cnnected with flexible hses t the cld and warm-water circuits f the units. Fr the cld-water circuit, nted with the marking C (Cld), there is n specific preference fr inlet r utlet; the same applies t the ht-water circuit, marked with H (Ht). Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r duble scket cuplings with duble O-ring seals. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat exchanger, and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cldwater pipe because f the risk f cndensatin. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water speed: m/s The lcal flw speed in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar 97

100 Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Maintenance: Depending n the quality f the rm air, rm air may cntain varius levels f dust particles and ther cntaminatin. As the rm air is recirculated thrugh the units, the crrespnding electrstatic effect may cause this dirt t build up in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. Fr cleaning purpses, ur patented cnstructins allws fr the frnt f the heat exchanger t be remved easily and withut tls. This wrks as fllws: Push the perfrated part f the middle segment, in the middle, next t ne f the ends, apprximately 5 mm up. At the same time, push the entire middle segment lengthways int the relevant end. The ther side f the middle segment is nw released frm the ppsite end and can be remved frm the unit. It remains cnnected t the unit with tw steel safety cables. Clean the surfaces with an industrial vacuum cleaner, fitted with a sft brush. Make sure yu d nt bend the aluminium fins f the heat exchanger. Pints f attentin: If the units are fitted with electric heating, the units must be switched ff befre cleaning. Fit in reverse rder. Check that the mid frnt is stable n the ends and nt n ne f the side prjectins. 5.6 OKNV 98

101 5.7 Selectin example and selectin details Explanatin f abbreviatins: parameter unit explanatin V prim l/s r m 3 /h primary airflw (= fresh air) t pri C temperature f the primary airflw t rm C temperature f the rm t water in C temperature f the water n entry int the heat exchanger Sat % percentage saturatin Q l W supplied cling capacity f the primary air P s Pa static pre-pressure L w db[a] sund pwer level f the unit V w l/h amunt f water in litres per hur ΔP w kpa water-side pressure drp ver the heat exchanger Q wk W supplied cling capacity water side Q ww W supplied heating capacity water side Δ tw C difference between incming and utging temperature ver the heat exchanger Q t W supplied capacity by heat exchanger and primary air quick selectin: L 9 C difference between rm temperature and primary air temperature is 9 C W 9 C difference between rm temperature and water-entry temperature is 9 C W 10 C difference between rm temperature and water-entry temperature is 10 C 99

102 Selectin example OKNV - type 450 Crner rm fr 2 peple (LxWxH) 5.4 x 3.6 x 2.7m Requirement: Ventilatin air fr the rm 160 m 3 /h Cling capacity 1650 Watt Heating capacity 1600 Watt Temperatures: Summer: Rm (t rm, 50% Sat) 25 C Primary air (t pri ) 16 C Cling water (t water in ) 15 C Winter: Rm (t rm ) 20 C Primary air (t pri ) 20 C Heating water (t water in ) 40 C This means: Summer: Temperature difference air side (t rm -t pri ) 9 C (L9) Temperature difference water side (t rm -t water in ) 10 C (W 10 ) Winter: Temperature difference air side (t pri -t rm ) 0 C Temperature difference water side (t water in -t rm ) 20 C On the basis f the rm width, tw mdel 1800 units can be fitted. This means: Primary air per chilled beam: 80 m 3 /h Required cling capacity per unit (1650/2 ): 825 Watt Required heating capacity per unit (1600/2 ): 800 Watt On the next pages there is a selectin table fr OKNV type 450 mdel 1800: The table is split int tw parts - ne part with air-side details (left side f the table) and ne part with water-side details (right side). The ttal capacity f a chilled beam is the sum f the air-side capacity and the water-side capacity. Fr the tw cmmn temperature cnditins L 9 W 9 and L 9 W 10, the ttal capacity has been included in the dark-blue clumns. These quick-selectin clumns shw yu instantly whether the maximum available capacities are enugh fr yur selectin example. 5.7 OKNV 100

103 Selectin example OKNV - type mdel 1800 COOLING Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, On the basis f the required amunt f air f 80 m 3 /h, nzzle type B2 is chsen. The details wuld be: Nzzle B2: 1 Primary air 80 m3/h 2 Required static pressure Ps 86 Pa. 3 Sund pwer level Lw 21 db(a). 4 Air-side capacity (based n L 9 ) 242 Watt 5 Water-side capacity at l/h (based n W 10 ) 586 Watt 7 Ttal cling capacity per unit 828 Watt As the stated temperature cnditins match exactly with the temperature cnditins L 9 W 10, the far right clumn lists the ttal capacity f 828 Watt. This is 3 Watt mre than the required capacity. 101

104 Selectin example OKNV - type mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Fr the heating data, the fllwing applies: Nzzle B2: 1 Primary air 80 m 3 /h Air-side capacity based n L0 (nt in table) 0 Watt Water-side capacity at 2 70 l/h (based n W20) 811 Watt 3 Ttal heating capacity per unit 811 Watt With increasingly mdern facade technlgy, which keeps the heat in better, capacity ften des nt need t be brught in air side. The primary air temperature is then equal t the required rm air temperature. In this situatin, the water valve will be cntrlled up t apprximately 70 l/h t supply the required 800 Watt. 5.7 OKNV 102

105 Perfrmance data OKNV - type mdel 1200 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

106 Perfrmance data OKNV - type mdel 1200 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 104

107 Perfrmance data OKNV - type mdel 1500 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

108 Perfrmance data OKNV - type mdel 1500 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 106

109 Perfrmance data OKNV - type mdel 1800 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

110 Perfrmance data OKNV - type mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 108

111 Perfrmance data OKNV - type mdel 2400 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

112 Perfrmance data OKNV - type mdel 2400 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 110

113 Perfrmance data OKNV - type mdel 3000 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

114 Perfrmance data OKNV - type mdel 3000 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 112

115 Perfrmance data OKNV - type mdel 1200 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

116 Perfrmance data OKNV - type mdel 1200 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 114

117 Perfrmance data OKNV - type mdel 1500 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

118 Perfrmance data OKNV - type mdel 1500 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 116

119 Perfrmance data OKNV - type mdel 1800 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

120 Perfrmance data OKNV - type mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 118

121 Perfrmance data OKNV - type mdel 2400 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

122 Perfrmance data OKNV - type mdel 2400 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 120

123 Perfrmance data OKNV - type mdel 3000 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

124 Perfrmance data OKNV - type mdel 3000 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNV 122

125 CHAPTER 6 Chilled beam OKNB 400 The Slid Air OKNB chilled beam is an active chilled beam that can be built int a bulkhead r a facade in rms. Air-utflw directin: hrizntal. Air supply: hrizntal Large cling capacity at lw ventilatin-air velcities Air supply and utflw sectins f variable lengths. Available in several clurs. Applicatins: htel rms bedrms in hspitals and care hmes ffices Functins: ventilatin cling heating Specificatins: type: 400 mdel: 1000 ventilatin: t 190 m 3 /h cling: t 1300 W heating: t 2200 W water flw: t 300 l/h. 123

126 6.1 Applicatin The OKNB has been designed as a cmpact chilled beam, with a lw built-in height; it has a high capacity and is suitable fr ventilatin, cling and heating rms f 2.4 t 3.5 metres high. The clsed unit brings the supply air hrizntally, ne-sided int the rm and because f its highly efficient blw-in effect it can be placed in a bulkhead n the side f the rm in htel rms, patient rms, bedrms and ffices. The chice f varius nzzle cnfiguratins enables an ptimum cmbinatin f ventilatin air and cling capacity in every situatin. Cntents 6.1 Applicatin Operatin, specificatins Main dimensins, cnnectin sizes and integratin Versins and ptins Order cdes Installatin requirements and maintenance Selectin example and selectin details OKNB 124

127 Prperties and benefits f the OKNB Applicatin in htel rms, bedrms in hspitals, care hmes and ffices Suitable fr rms withut mdular ceilings, but with a cve n the facade r crridr side Rm temperature cntrlled with amunt f water (cling and heating) CO 2 cntrl pssible with VAV air cntrl Large heat exchanger fr higher emissin n water side withut requiring a high ventilatin level Heat exchanger fr cling and heating Optin t use varius diffusers. 125

128 The OKNB (bulk head unit) is fitted fully ut f sight, and is aesthetically pleasing. The ptin f varius diffusers and clurs will benefit the ambiance f the htel rm. The lw nise level f the unit will nt have an adverse effect n the cmfrt f the rm. The unit has been designed fr bulkhead integratin int suspended plaster ceilings. The lw weight f the unit makes it easy t handle fr integratin. The air intake sectin and the air utlet sectin are variable in length, which makes the unit universally applicable in many installatins. Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at OKNB 126

129 6.2 Operatin Intrductin f air thrugh nzzles frm a pressure chamber brings primary (ventilatin) air t a high velcity. This prduces a pwerful pump effect (inductin) and secndary air (rm air) is drawn in via the heat exchanger. When the air passes the heat exchanger, it is cled r heated in functin f the need in the rm. The tertiary airflw (the ttal f rm air and primary air) is brught int the rm thrugh integrated utlet penings. Specificatins: Active chilled beam fr water-air systems with high thermal capacities, lw nise levels and a high cmfrt level. The variable lengths f the intake and utflw sectins make it applicable t many bulkhead cnstructins. Suitable fr cling, ventilating and heating rms with a height f 2.4 t 3.5m. Suitable fr heating rms with lw warm-water temperatures f heat-pump systems. Heat exchangers available as a 2 r 4-pipe versin. Varius standard nzzle cnfiguratins fr ptimum determinatin f the ventilatin air/ recirculatin air rati. The materials that are used are 100% recyclable. Husing is made frm galvanised sheet steel, f which the visible parts are painted with an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is made frm cpper pipes with aluminium cling fins. Leaktightness 100% tested at 15 bar. Husing: Material: Finish f visible parts: Outlet diffuser: Heat exchanger: Pipe material: Fin material: Pst-treatment: Test pressure: galvanised sheet steel. epxy paint standard clur white RAL andised aluminium prfile r steel diffuser with aluminium frame. cpper aluminium nne 15 bar 127

130 6.2 OKNB 128

131 6.3 Main dimensins, cnnectin sizes and ceiling integratin fixing slt 27 x Weight: 21 kg H C x O 12 mm C H left right 129

132 The fllwing tlerances shuld be taken int accunt when selecting an OKNB chilled beam, t ensure ptimum integratin int the bulkhead r the wall. OKNB edge cnfiguratin: Dimensins and tlerances main dimensins Actual dimensins chilled beam: Wall r bulkhead dimensins in mm, tlerance +/- 2.0mm 160 x 815 pening size Ceiling 450 x 950 pening size OKNB 130

133 6.4 Versins and ptins Nzzle cnfiguratins This catalgue lists 4 standard nzzle cnfiguratins. Other nzzle cnfiguratins are als pssible in cnsultatin with Slid Air. Different diffusers The utflw diffuser can be supplied with vertical r hrizntal aluminium blades, a cmbinatin f vertical and hrizntal aluminium blades r with a high-inductin steel diffuser. 131

134 6.5 Order cdes OKNB Left/right psitin: standing in the directin f the utlet side A n the ppsite side air cnnectin back RIGHT utlet side A frnt LEFT Example rder cde: OKNB 400 / 1000 L1V1 AL3O DOO OxO Versin OKNB 2 Type Mdel Nzzle cnfiguratin L1 L3 L6 L8 5 Heat exchanger K Cling V Cling & Heating 6 Discharge cnfiguratin 1 One-sided utlet 7 Air cnnectin A Back L Left R Right 8 Water cnnectin L Left R Right 9 Diameter air cnnectin 3 125mm 10 Plenum versin O Standard 11 Diffuser A Single deflectin (hrizntal) WUAA U Single deflectin (vertical) WUBA D Duble deflectin WUCA W High inductin WTHA O N diffuser 12 Edge cnfiguratin O Nt applicable 13 FPC O Nt applicable 14 Actual width O See dimensinal sketch 15 Actual length O See dimensinal sketch 16 Clur (RAL) 9010 (standard) 17 Glss value 55% (standard) 6.4 AND 6.5 OKNB 132

135 6.6 Installatin requirements and maintenance Fitting The unit has been designed t be integrated int a bulkhead r a wall. The lw weight f the unit makes it easy t handle in mdular ceilings. The unit shuld be fitted with fall prtectin. The suspensin pints are nted n the dimensinal sketches earlier in this Chapter. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectr-specific requirements that apply t fitting air and waterside accessries. Unpacking and handling the unit must be dne carefully. We recmmend that every unit is lifted by 2 fitters by picking it up by the central husing and nt by the diffusers. They can be suspended with rds, cable braid, chains r metal hks. The air intake is cnnected t the central ventilatin system with a flexible acustic-insulating duct that is als thermally insulated. The flexible duct is clamped t the air intake f the unit with a duct clip, fllwing which the cnnectin can be taped dwn withut tensin. Fr practical reasns the water pipes are usually cnnected with flexible hses t the cld and warm-water circuits f the units. Fr the cld-water circuit, market with blue stickers, there is n specific preference fr intake r utflw. The same applies t the warm-water circuit, which is marked with red stickers. Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r duble scket cuplings with duble O-ring seals. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat exchanger, and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cldwater pipe because f the risk f cndensatin. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water speed: m/s The lcal flw speed in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar 133

136 Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Maintenance: Depending n the quality f the rm air, this may cntain varius levels f dust particles and ther cntaminatin. As the rm air is recirculated thrugh the units, the crrespnding electrstatic effect may cause this dirt t build up in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. The perfrated return diffuser can be easily remved t clean the heat exchanger. This wrks as fllws: Insert a small Allen key int a hle in the crner f the perfratin. Pull the diffuser carefully frm the snap cnnectins. The diffuser remains cnnected t the unit with 2 safety cables. Clean the surfaces with an industrial vacuum cleaner, fitted with a sft brush. Make sure yu d nt bend the aluminium fins f the heat exchanger. Pints f attentin: Fit in reverse rder. Check that the perfrated diffuser is prperly centred in the snap cnnectins in the edge f the diffuser. 6.6 OKNB 134

137 6.7 Selectin example and selectin details Explanatin f abbreviatins: parameter unit explanatin V prim l/s r m 3 /h primary airflw (= fresh air) t pri C temperature f the primary airflw t rm C temperature f the rm t water in C temperature f the water n entry int the heat exchanger Sat % percentage saturatin Q l W supplied cling capacity f the primary air P s Pa static pre-pressure L w db[a] sund pwer level f the unit V w l/h amunt f water in litres per hur ΔP w kpa water-side pressure drp ver the heat exchanger Q wk W supplied cling capacity water side Q ww W supplied heating capacity water side Δ tw C difference between incming and utging temperature ver the heat exchanger Q t W supplied capacity by heat exchanger and primary air quick selectin: L 9 C difference between rm temperature and primary air temperature is 9 C W 9 C difference between rm temperature and water-entry temperature is 9 C W 10 C difference between rm temperature and water-entry temperature is 10 C 135

138 Selectin example OKNB - type 400 Htel rm fr 2 peple (LxWxH) 7.8 x 3.6 x 2.6m Requirement: Ventilatin rate 1.3 times ventilatin Cling capacity 900 Watt Heating capacity 750 Watt Temperatures: Summer: Rm (t rm, 50% Sat) 25 C Primary air (t pri ) 16 C Cling water (t water in ) 15 C Winter: Rm (t rm ) 20 C Primary air (t pri ) 20 C Heating water (t water in ) 45 C This means: Summer: Temperature difference air side (t rm -t pri ) 9 C (L 9 ) Temperature difference water side (t rm -t water in ) 10 C (W 10 ) Winter: Temperature difference air side (t pri -t rm ) 0 C Temperature difference water side (t water in -t rm ) 25 C The rm dimensins and the 1.3 ventilatin rate requires an air supply f 95 m 3 /h. The htel unit is usually fitted in the suspended ceiling near the entrance t a rm and blws directly under the ceiling twards the facade side. Belw there is a selectin table fr OKNB type 400 mdel 1000 fr cling: The table is split int tw parts - ne part with air-side details (left side f the table) and ne part with water-side details (right side). The ttal capacity f a chilled beam is the sum f the air-side capacity and the water-side capacity. Fr the tw cmmn temperature cnditins L 9 W 9 and L 9 W 10, the ttal capacity has been included in the dark-blue clumns. These quick-selectin clumns shw yu instantly whether the maximum available capacities are enugh fr yur selectin example. 6.7 OKNB 136

139 Selectin example OKNB - type mdel 1000 (nzzle L1 and L3) COOLING Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle L 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle L 3 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, On the basis f the required amunt f air f 80 m 3 /h, nzzle type L3 is chsen. The details wuld be: Nzzle L3: 1 Primary air 95 m 3 /h 2 Required static pressure Ps 109 Pa. 3 Sund pwer level Lw 30 db(a). 4 Air-side capacity (based n L 9 ) 287 Watt 5 Water-side capacity at l/h (based n W 10 ) 648 Watt 7 Ttal cling capacity per unit 935 Watt As the stated temperature cnditins match exactly with the temperature cnditins L 9 W 10, the far right clumn lists the ttal capacity f 935 Watt. This is a little mre than the required capacity f 900 Watt. 137

140 Selectin example OKNB - type mdel 1000 (nzzle L1 and L3) HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle L 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle L 3 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Fr the heating data, the fllwing applies: Nzzle L3: 1 Primary air 95 m 3 /h Air-side capacity based n L 0 (nt in table) 0 Watt Water-side capacity at l/h (based n W 25 ) 763 Watt 3 Ttal heating capacity per unit 763 Watt. With increasingly mdern facade technlgy, which keeps the heat in better, capacity ften des nt need t be brught in air side. The primary air temperature is then equal t the required rm air temperature. In this situatin, the water valve will be cntrlled up t just under 200 l/h t supply the required 750 Watt. 6.7 OKNB 138

141 Perfrmance data OKNB - type mdel 1000 (nzzle L1 and L3) COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle L 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle L 3 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

142 Perfrmance data OKNB - type mdel 1000 (nzzle L1 and L3) HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle L 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle L 3 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNB 140

143 Perfrmance data OKNB - type mdel 1000 (nzzle L6 and L8) COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle L 6 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle L 8 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

144 Perfrmance data OKNB - type mdel 1000 (nzzle L6 and L8) HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle L 6 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle L 8 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNB 142

145 CHAPTER 7 Chilled beam OKNH 600 The Slid Air OKNH is an active chilled beam fr applicatin in suspended ceilings. Unit with high capacities Air-utflw directin: 2-sided Air supply: hrizntal Available in varius nzzle cnfiguratins and clurs Available fr nearly all mdular ceilings, including cncealed systems and permanent plaster ceilings. Functins: ventilatin cling heating Applicatins: ffices, pen-plan ffices meeting rms class rms general rms Specificatins: width: 600 lengths: 1200, 1500, 1800, 2400, 3000 ventilatin: t 280 m 3 /h cling: t 680 W/m heating: t 2150 W/m water flw: t 450 l/h 143

146 7.1 Applicatin The OKNH has been designed as a high-capacity cmpact chilled beam and it is suitable fr ventilatin, cling and heating rms f 2.4 t 4.0 metres high. Idea fr envirnments in a warm climate r with high internal heat lads. The clsed units intrduces the supply air n tw sides and its highly efficient blw-in effect means it can be fitted in ffices in the middle f the rms parallel t the facade. The chice f varius nzzle types enables an ptimum cmbinatin f ventilatin air and cling capacity in every situatin. Cntents 7.1 Applicatin Operatin, specificatins Main dimensins, cnnectin sizes and ceiling integratin Versins and ptins Order cdes Installatin requirements and maintenance Selectin example and selectin details OKNH 144

147 Prperties and benefits f the OKNH Applicatin in ffices, meeting rms, teaching rms, pen-plan ffices, general areas Unit with significant capacities Heat exchanger fr cling and heating Rm temperature cntrlled with amunt f water (cling and heating) CO 2 cntrl pssible with VAV air cntrl 6 standard heat-exchanger lengths Husing lengths in intervals f 5mm Als available fr cncealed ceiling systems The unit has been designed as an insert mdule fr mdular ceilings with a selectin f T-bars r mega prfiles, with a mdule size f 600mm. The unit can als be used as an intermediate element in cffered ceilings, cncealed mdular ceilings r permanent ceilings. Every length available between 895 and 2995mm at intervals f 5mm. Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at 145

148 7.2 Operatin Intrductin f air thrugh nzzles frm a pressure chamber brings primary (ventilatin) air t a high velcity. This prduces a pwerful pump effect (inductin) and secndary air (rm air) is drawn in via the heat exchanger. When the air passes the heat exchanger, it is cled r heated in functin f the need in the rm. The tertiary airflw (the ttal f rm air and primary air) is brught int the rm thrugh integrated utflw penings. Specificatins: Active chilled beam fr water-air systems with high thermal capacities, limited nise levels and a high cmfrt level. The wide range f edge cnstructins and standard dimensins makes it suitable fr T-bar, integrated, cncealed and permanent ceilings. Available in 5 basic lengths. Lw height f 205 t 240mm. Suitable fr cling, ventilating and heating rms with a height f 2.4 t 4.0 m. Extremely suitable fr heating rms with lw warm-water temperatures f heat-pump systems. Heat exchangers available as a 2 r 4-pipe versin. Varius standard nzzle versins fr ptimum determinatin f the ventilatin air/recirculatin air rati. The materials that are used are 100% recyclable. Husing is made frm galvanised sheet steel, f which the visible parts are painted with an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is made frm cpper pipes with aluminium cling fins. Leaktightness 100% tested at 15 bar. Husing: Material: galvanised sheet steel. Finish f visible parts; epxy paint standard clur white RAL Heat exchanger: Pipe material: cpper Fin material: aluminium Pst-treatment: nne Test pressure: 15 bar 7.2 OKNH 146

149 7.3 Main dimensins, cnnectin sizes and ceiling integratin Available dimensins and weights: (different widths and lengths available upn request). type mdel L frm/t mm B*) mm B1 mm / / OKNH / / / B*: actual width, 3000 depending n 2995 the edge cnfiguratin H1 mm D mm M mm P mm K mm weight kg M K 40 B1 H1 D P M L B C H H C C H H C 12 mm heating: 2 x cling: 2 x 12 mm 15 mm Mdel Mdel

150 The selectin f the OKNH chilled beam must take accunt f the fllwing tlerances f main dimensins in cmbinatin with the side-edge cnfiguratin t ensure an ptimum integratin int the ceiling. Example 1: Example 2: OKNH in T-bar ceiling has a net external dimensin f: 593 t 597mm, by 2991 t 2995mm. OKNH in superstructure versin has a net external dimensin f: 593 t 597mm, by 2291 t 2995mm. The ver the flange size is: 633 t 637mm, by 3031 t 3035mm. OKNH type 600 side-edge cnfiguratin: dimensins and tlerances main dimensins Actual width B chilled beam: dimensins in mm, tlerance +/- 2.0 mm Actual length L chilled beam: tlerance +0 / -4mm 1 T-bar (insert) ceilings Detail A L 1195 t Superstructure versin permanent ceilings Detail B L 1195 t Cncealed mdular ceilings Detail C 7.3 OKNH 148

151 7.4 Versins and ptins Nzzle cnfiguratins This catalgue lists 3 standard nzzles. Other nzzle cnfiguratins are als pssible in cnsultatin with Slid Air. Different lengths Every length available between 1195 and 2995mm at intervals f 5mm. Asymmetrical utflw pattern In a 1-sided utflw unit, the nzzles can be left ff n ne f the utflw sides. This means the unit can nly let thugh half f the air quantity that crrespnds t the chsen nzzle, which reduces the heat-exchanger capacity. Cnsult ur specialists fr mre infrmatin. 149

152 7.5 Order cdes OKNH air cnnectin right Left/right psitin: standing in the directin f the water cnnectins A n the ppsite side RIGHT water cnnectins A LEFT Example rder cde: OKNH 600 / 1800 A1K2 RO3O O1O 595x Versin OKNH 2 Type Mdel Nzzle cnfiguratin A1 B2 C2 5 Heat exchanger K Cling V Cling & Heating 6 Discharge cnfiguratin 2 Tw-sided discharge 3 One-sided left discharge 4 One-sided right discharge 7 Air cnnectin L Left R Right 8 Water cnnectin O Standard 9 Diameter air cnnectin 3 125mm 4 160mm 10 Plenum versin O Nt applicable 11 Diffuser O Nt applicable 12 Edge cnfiguratin 1 Suitable fr T-bar (insert) 2 Superstructure versin permanent ceilings 3 Cncealed 13 FPC O Nt applicable 14 Actual width B 595 Depending n the side-edge cnfiguratin 15 Actual length L 1795 Depending n the mdel and the side-edge cnfiguratin 16 Clur (RAL) 9010 (standard) 17 Glss value 55% (standard) 7.4 AND 7.5 OKNH 150

153 7.6 Installatin requirements and maintenance Fitting The unit has been designed as an 600mm insert mdule fr T-bar ceilings, plaster ceilings, cncealed mdular ceilings and fine-line mdular ceilings. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectr-specific requirements that apply t fitting air and water-side accessries. Unpacking and handling the unit must be dne carefully. We recmmend that every unit is lifted by 2 fitters by picking it up at the head end. The lnger and heavier units in particular shuld nt be lifted by the lng sides, because they culd bend. It is custmary t suspend the unit at 4 pints and at 6 pints frm a length f 2000mm. They can be suspended with rds, cable braid, chains r metal hks. The air intake is cnnected t the central ventilatin system with a flexible acustic-insulating hse that is als thermally insulated. The hse is clamped t the air intake f the unit with a hse clip, fllwing which the cnnectin can be taped dwn withut tensin. Fr practical reasns the water pipes are usually cnnected with flexible hses t the cld and warm-water circuits f the units. Fr the cld-water circuit, nted with the marking C (Cld), there is n specific preference fr inlet r utlet; the same applies t the ht-water circuit, marked with H (Ht). Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r duble scket cuplings with duble O-ring seals. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat exchanger, and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cldwater pipe because f the risk f cndensatin. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water speed: m/s The lcal flw speed in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air heat exchangers are 100% tested at this testing pressure. Operating pressure: 10 bar 151

154 Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Maintenance: Depending n the quality f the rm air, this may cntain varius levels f dust particles and ther cntaminatin. As the rm air is recirculated thrugh the units, the crrespnding electrstatic effect may cause this dirt t build up in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. Fr cleaning purpses, ur patented cnstructins allws the frnt f the heat exchanger t be remved easily and withut tls. This wrks as fllws: Push the perfrated part f the middle segment, in the middle, next t ne f the ends, apprximately 5mm up. At the same time, push the entire middle segment lengthways int the relevant end. The ther side f the middle segment is nw released frm the ppsite end and can be remved frm the unit. It remains cnnected t the unit with tw steel safety cables. Clean the surfaces with an industrial vacuum cleaner, fitted with a sft brush. Make sure yu d nt bend the aluminium fins f the heat exchanger. Pints f attentin: Fit in reverse rder. Check that the mid frnt is stable n the ends and nt n ne f the side prjectins. If the units are fitted with electric heating, the units must be switched ff befre cleaning r maintenance. 7.6 OKNH 152

155 7.7 Selectin example and selectin details Explanatin f abbreviatins: parameter unit explanatin V prim l/s r m 3 /h primary airflw (= fresh air) t pri C temperature f the primary airflw t rm C temperature f the rm t water in C temperature f the water n entry int the heat exchanger Sat % percentage saturatin Q l W supplied cling capacity f the primary air P s Pa static pre-pressure L w db[a] sund pwer level f the unit V w l/h amunt f water in litres per hur ΔP w kpa water-side pressure drp ver the heat exchanger Q wk W supplied cling capacity water side Q ww W supplied heating capacity water side Δ tw C difference between incming and utging temperature ver the heat exchanger Q t W supplied capacity by heat exchanger and primary air quick selectin: L 9 C difference between rm temperature and primary air temperature is 9 C W 9 C difference between rm temperature and water-entry temperature is 9 C W 10 C difference between rm temperature and water-entry temperature is 10 C 153

156 Selectin example OKNH - type 600 Crner ffice fr 2 peple (LxWxH) 3.6 x 7.2 x 2.7m Requirement: Ventilatin rate 150 m 3 /h Cling capacity (75 w/m 2 ) 1950 Watt Heating capacity 1400 Watt Temperatures: Summer: Rm (t rm, 50% Sat) 25 C Primary air (t pri ) 16 C Cling water (t water in ) 15 C Winter: Rm (t rm ) 20 C Primary air (t pri ) 20 C Heating water (t water in ) 45 C This means: Summer: Temperature difference air side (t rm -t pri ) 9 C (L 9 ) Temperature difference water side (t rm -t water in ) 10 C (W 10 ) Winter: Temperature difference air side (t pri -t rm ) 0 C (L 0 ) Temperature difference water side (t water in -t rm ) 25 C On the basis f the rm width, tw mdel 1800 units can be fitted. This means: Primary air per chilled beam (150/2): 75 m 3 /h Required cling capacity per unit (1950/2): 975 Watt Required heating capacity per unit (1400/2): 700 Watt The next page cntains the selectin table fr the OKNH type 600 mdel The table is split int tw parts - ne part with air-side details (left side f the table) and ne part with water-side details (right side). The ttal capacity f a chilled beam is the sum f the air-side capacity and the water-side capacity. Fr the tw cmmn temperature cnditins L 9 W 9 and L 9 W 10 the ttal capacity is included in the dark-blue clumns. These quick-selectin clumns shw yu instantly whether the maximum available capacities are enugh fr yur selectin example. 7.7 OKNH 154

157 Selectievrbeeld OKNH - type mdel 1800 COOLING Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, On the basis f the required amunt f air f 75m 3 /h 1, nzzle type B2 is chsen The details wuld be: Nzzle B2: 2 Required static pressure Ps 91 Pa 3 Sund pwer level Lw 19 db(a) 4 Air-side capacity (based n L9) 227 Watt 5 Water-side capacity at l/h (based n W 10 ) 773 Watt 7 Ttal cling capacity per unit 1000 Watt The tw chilled beams tgether supply 2000 Watt As the stated temperature cnditins match exactly with the temperature cnditins L 9 W 10, the far right clumn lists the ttal capacity f 1000 Watt. As the required ttal capacity is 50 Watt lwer, the water valve will carry a little less water than 220 l/h. 155

158 Selectievrbeeld OKNH - type mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Fr the heating details, the fllwing applies Air-side capacity (based n L0) 0 Watt 2 Water-side capacity at 1 50 l/h (based n W25) 709 Watt Ttal heating capacity 709 Watt The tw chilled beams tgether supply 1418 Watt This supplied heating capacity is 18 Watt higher than the required capacity per unit, s the water valve will carry a little less water than 50 l/h. 7.7 OKNH 156

159 Perfrmance data OKNH - type mdel 1200 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

160 Perfrmance data OKNH - type mdel 1200 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNH 158

161 Perfrmance data OKNH - type mdel 1500 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

162 Perfrmance data OKNH - type mdel 1500 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNH 160

163 Perfrmance data OKNH - type mdel 1800 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

164 Perfrmance data OKNH - type mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNH 162

165 Perfrmance data OKNH - type mdel 2400 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

166 Perfrmance data OKNH - type mdel 2400 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNH 164

167 Perfrmance data OKNH - type mdel 3000 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle A 1 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

168 Perfrmance data OKNH - type mdel 3000 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle A 1 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNH 166

169 CHAPTER 8 Chilled beam OKNM The Slid Air OKNM is an active chilled beam fr applicatin in suspended ceilings. Air-utflw directin: 4-sided, Air supply: vertical r hrizntal, Available in varius nzzle cnfiguratins and clurs Available fr nearly all mdular ceilings, including permanent plaster ceilings. Applicatins: ffices, pen-plan ffices teaching rms meeting rms general rms Functins: ventilatin cling heating Specificatins: type: 600 mdel: 600 (ptinal 1200) ventilatin: t 100 m 3 /h cling: t 510 W heating: t 2320 W water flw: t 300 l/h. 167

170 8.1 Applicatin Cntents 8.1 Applicatin Operatin, specificatin 170 The OKNM has been designed as a cmpact chilled beam, with a lw built-in height; it has a high capacity and is suitable fr ventilatin, cling and heating rms f 2.4 t 3.5 metres high. 8.3 Main dimensins, cnnectin sizes and ceiling integratin Versins and ptins 173 The clsed unit intrduces supply air frm fur sides and it s highly efficient air distributin ffers freedm in ffice applicatins. A staggered pattern prvides the mst ptimum cmbinatin f ventilatin air and cling capacity in every situatin. 8.5 Order cdes Installatin requirements and maintenance Selectin example and selectin details OKNM 168

171 Prperties and benefits f the OKNM Applicatin in ffices, meeting rms, teaching rms, pen-plan ffices, general areas High cmfrt level with even, 4-sided utflw f cled r heated air, Rm temperature cntrlled with amunt f water (cling and heating) 2 standard heat exchanger lengths Husing 600x600mm r ptinal 1200x600mm, Perfrated face has the same lk as the Slid Air perfrated diffusers, prviding an aesthetic slutin Optin t adjust the utflw directin t being 1, 2, 3 r 4 sided. The unit has been designed as an insert mdule fr mdular ceilings with varius T-bars and a mdule size f 300 and 600mm. The unit can als be used as an intermediate element in cffered ceilings r permanent ceilings. The standard length is 595mm, but there is an ptinal 1195mm length. The lw weight f the unit makes it easy t handle and integrate int mdular ceilings. Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at 169

172 8.2 Operatin Intrductin f air thrugh nzzles frm a pressure chamber brings primary (ventilatin) air t a high velcity. This prduces a pwerful pump effect (inductin) and secndary air (rm air) is drawn in via the heat exchanger. When the air passes the heat exchanger, it is cled r heated in functin f the need in the rm. The tertiary airflw (the ttal f rm air and primary air) is brught int the rm thrugh integrated utflw penings. Specificatins: Active chilled beam fr water-air systems with high thermal capacities, limited nise levels and a high cmfrt level. The wide range f edge cnstructins and standard dimensins makes it suitable fr T-bar, integrated, and permanent ceilings. Suitable fr cling, ventilating and heating rms with a height f 2.4 t 4.0 m. Extremely suitable fr heating rms with lw warm-water temperatures f heat-pump systems. Heat exchangers available as a 2 r 4-pipe versin. Varius standard nzzle versins fr ptimum determinatin f the ventilatin air/recirculatin air rati. The materials that are used are 100% recyclable. Husing is made frm galvanised sheet steel, f which the visible parts are painted with an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is made frm cpper pipes with aluminium cling fins. Leaktightness 100% tested at 15 bar. Husing: Material: galvanised sheet steel. Finish f visible parts; epxy paint standard clur white RAL Heat exchanger: Pipe material: cpper Fin material: aluminium Pst-treatment: nne Test pressure: 15 bar 8.2 OKNM 170

173 8.3 Main dimensins, cnnectin sizes and ceiling integratin Available dimensins and weights: (different widths and lengths available upn request). type mdel weight kg OKNM , x 8 mm OKNM 600 / x 15 mm x 8 mm x 15 mm OKNM 600 / fixing hle 100 B (4x) 171

174 The selectin f the chilled beam OKNM must take accunt f the fllwing tlerances f main dimensins in cmbinatin with the side-edge cnfiguratin t ensure an ptimum integratin int the ceiling. OKNM type 600 & 1200 side-edge cnfiguratin: dimensins and tlerances main dimensins Actual dimensins chilled beam: dimensins in mm, tlerance +/- 2.0 mm T-bar (insert) ceilings OKNM 600 / 600 Detail A 16 B: 595 L: 595 OKNM 600 / 1200 Detail B 16 L: OKNM 172

175 8.4 Versins and ptins Nzzle cnfiguratins 3 standard nzzles are available. Oval air cnnectin Oval air cnnectin is available which is equivalent t Ø 125 mm. This reduces the integratin height frm 300mm t 260mm. A standard flexible duct can be cnnected. Length dimensins Besides the standard length f 595mm, there is an ptinal 1195mm available. Asymmetrical utflw pattern The nzzles can be cvered with blanking plates n ne, tw r three sides, which reduces the beam capacity. The side with the water cnnectins cannt be cvered. Cnsult ur specialists fr mre infrmatin. 173

176 CHAPTER 8.5 Order cdes OKNM Air cnnectin right-hand side RIGHT Left/right psitin: standing in the directin f the water cnnectins A n the ppsite side FRONT water cnnectins A BACK LEFT Example rder cde: OKNM 600 / 600 C2V5 RO3U O1O 595x Versin OKNM 2 Type Mdel Nzzle cnfiguratin B2 C2 D2 5 Heat exchanger K Cling V Cling & Heating 6 Discharge cnfiguratin 5 4-sided discharge 7 Air cnnectin T Tp L Left A Back R Right 8 Water cnnectin O Standard 9 Diameter air cnnectin 3 125mm V Oval equivalent t 125 Ø 10 Plenum versin U Nt insulated R Insulated 11 Diffuser O Nt applicable 12 Edge cnfiguratin 1 Suitable fr T-bar (insert) 2 Superstructure versin permanent ceilings 13 FPC O Nt applicable 14 Actual width B Actual length L Clur (RAL) 9010 (standard) 17 Glss value 55% (standard) 8.4 AND 8.5 OKNM 174

177 8.6 Installatin requirements and maintenance Fitting The unit has been designed as an insert mdule (dimensins 600 mm) fr T-bar ceilings, plaster ceilings, and permanent ceilings. The lw weight f the unit makes it easy t handle in mdular ceilings. The unit shuld be fitted with safety retainers. The suspensin pints are nted n the dimensinal sketches earlier in this Chapter. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectr-specific requirements that apply t fitting air and water-side accessries. Unpacking and handling the unit must be dne carefully. It is recmmended that 2 fitters lift any unit. The unit must be suspended n 4 pints. They can be suspended with rds, cable braid, chains r metal hks. The air intake is cnnected t the central ventilatin system with a flexible acustic-insulating duct that is als thermally insulated. The flexible duct is clamped t the air intake f the unit with a duct clip, fllwing which the cnnectin can be taped dwn withut tensin. Fr practical reasns the water pipes are usually cnnected with flexible hses t the cld and warm-water circuits f the units. Fr the cld-water circuit, nted with the marking C (Cld), there is n specific preference fr inlet r utlet; the same applies t the warm-water circuit, which is marked with red stickers. Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r duble scket cuplings with duble O-ring seals. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat exchanger, and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cldwater pipe because f the risk f cndensatin. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water speed: m/s The lcal flw speed in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar 175

178 Water quality: Treated water lw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm Maintenance: Depending n the quality f the rm air, this may cntain varius levels f dust particles and ther cntaminatin. As the rm air is recirculated thrugh the units, the crrespnding electrstatic effect may cause this dirt t build up in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. In view f cleaning the heat exchanger, it is pssible t remve the middle segment f the unit in a simple fashin. This wrks as fllws: Use yur thumbs t push the crner clips f tw adjacent crners slightly pen and pull the frnt slightly dwn frm the crner clips. Then push in the tw clips. Lwer the frnt. The frnt stays cnnected t the unit with 2 steel safety cables. Clean the surface with an industrial vacuum cleaner, fitted with a sft brush. Make sure yu d nt bend the aluminium fins f the heat exchanger. Pints f attentin: Fit in reverse rder. Finally, check that the suspensin rds f the frnt are stable in the crner clips and the crner clips clsed. 8.6 OKNM 176

179 8.7 Selectin and selectin details Explanatin f abbreviatins: parameter unit explanatin V prim l/s r m 3 /h primary airflw (= fresh air) t pri C temperature f the primary airflw t rm C temperature f the rm t water in C temperature f the water n entry int the heat exchanger Sat % percentage saturatin Q l W supplied cling capacity f the primary air P s Pa static pre-pressure L w db[a] sund pwer level f the unit V w l/h amunt f water in litres per hur ΔP w kpa water-side pressure drp ver the heat exchanger Q wk W supplied cling capacity water side Q ww W supplied heating capacity water side Δ tw C difference between incming and utging temperature ver the heat exchanger Q t W supplied capacity by heat exchanger and primary air quick selectin: L 9 C difference between rm temperature and primary air temperature is 9 C W 9 C difference between rm temperature and water-entry temperature is 9 C W 10 C difference between rm temperature and water-entry temperature is 10 C 177

180 Selectin example OKNM Cncentratin rm fr 1 persn (LxWxH) 3.0 x 3.0 x 2.7m Requirement: Ventilatin rate at least duble Cling capacity (55 Watt/m 2 ) 495 Watt Heating capacity (45 Watt/m 2 ) 405 Watt Temperatures: Summer: Rm (t rm, 50% Sat) 25 C Primary air (t pri ) 16 C Cling water (t water in ) 15 C Winter: Rm (t rm ) 20 C Primary air (t pri ) 20 C Heating water (t water in) 45 C This means: Summer: Temperature difference air side (t rm -t pri ) 9 C (L 9 ) Temperature difference water side (t rm -t water in ) 10 C (W 10 ) Winter: Temperature difference air side (t pri -t rm ) 0 C Temperature difference water side (t water in -t rm ) 25 C The rm dimensins and the required minimum ventilatin rate lead t a minimum fresh air requirement f 48.6 m 3 /h. The selectin f the OKNM is based n a minimum fresh air requirement f 50 m 3 /h. The next page cntains the selectin table fr the OKNM type 600 mdel 600 fr cling. The table is split int tw parts - ne part with air-side details (left side f the table) and ne part with water-side details (right side). The ttal capacity f a chilled beam is the sum f the air-side capacity and the water-side capacity. Fr the tw cmmn temperature cnditins L 9 W 9 and L 9 W 10 the ttal capacity is included in the dark-blue clumns. These quick-selectin clumns shw yu instantly whether the maximum available capacities are enugh fr yur selectin example. 8.7 OKNM 178

181 Selectin example OKNM - type mdel 600 COOLING Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, On the basis f the amunt f air, the chice is fr: Nzzle B2: 1 Primary air 50 m 3 /h 2 Required static pressure Ps 117 Pa. 3 Sund pwer level Lw 30 db(a). 4 Air-side capacity (based n L 9 ) 151 Watt 5 Water-side capacity at l/h (based n W 10 ) 341 Watt 7 Ttal cling capacity per unit 492 Watt As the stated temperature cnditins match exactly with the temperature cnditins L 9 W 10, the far right clumn lists the ttal capacity f 492 Watt. This is 3 Watt less than the required capacity f 495 Watt. Hwever, the difference is nil, which means these details can be used. 179

182 Selectin example OKNM - type mdel 600 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Fr the heating data, the fllwing applies: Nzzle B2: 1 Primary air 50 m 3 /h Air-side capacity based n L 0 (nt in table) 0 Watt 2 Water-side capacity at 3 50 l/h (based n W 25 ) 531 Watt Ttal heating capacity 531 Watt With increasingly mdern facade technlgy, which keeps the heat in better, capacity ften des nt need t be brught in air side. The primary air temperature is then equal t the required rm air temperature. In this selectin, the supplied capacity is higher than the required capacity. In this situatin, the water valve will be cntrlled pen at full lad t just under 50 l/h t supply the required 405 Watt. 8.7 OKNM 180

183 Perfrmance data OKNM - type mdel 600 COOLINg Primary AIR Cling capacity air trm -tpri C WATER Cling capacity water trm -twater in C Fast selectin* L 9 L 9 W 9 W 10 Vprim Ps Lw Q I Q I Q I V w ΔP w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q wk Δt w Q t Q t Nzzle B 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle C 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9, Nzzle D 2 l/s m 3 /h Pa db(a) W 8 W 9 W 10 l/h kpa W 6 C W 7 C W 8 C W 9 C W 10 C W 11 C W 9,9 W 9,

184 Perfrmance data OKNM - type mdel 600 HEATING Primary AIR Heating capacity air tpri -trm C WATER Heating capacity water twater in -trm C Vprim Ps Lw Q I Q I Q I V w ΔP w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Q ww Δt w Nzzle B 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle C 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C Nzzle D 2 l/s m 3 /h Pa db(a) W 10 W 15 W 20 l/h kpa W 20 C W 25 C W 30 C W 40 C W 50 C W 60 C OKNM 182

185 CHAPTER 9 Chilled beam OKNP The Slid Air OKNP is a passive chilled beam fr applicatin in and abve suspended ceilings and in suspensin applicatins. Suitable fr cling a rm withut integrated supply f ventilatin air. Air-utflw directin: vertical. Available in tw widths, 6 lengths and varius clurs. Applicatins: ffices, pen-plan ffices meeting rms general rms that have a separate ventilatin system. Functins: cling heating in specific situatins Specificatins: type: 300, 450 and 600 mdel: 900, 1200, 1500, 1800, 2400 and 3000 cling: t 440 W/m water flw: t 500 l/h. 183

186 9.1 Applicatin Cntents 9.1 Applicatin Operatin, specificatin Main dimensins, cnnectin sizes and ceiling integratin Versins and ptins Order cdes Installatin requirements and maintenance Selectin 194 Passive chilled beams are designed t cl rms f up t apprximately 3.5 m high, with high internal heat lads, withut supplying additinal ventilatin air which must be specified separately. This means that the cling capacity can be adjusted specifically t the high heat lad withut this requiring unnecessary ventilatin air and nise prductin. The energetic benefits f water as transprt medium are used t maximum effect in cmbinatin with a high cmfrt level fr the rm. Passive chilled beams are extremely suitable fr special architectural slutins - as an additin t existing systems r during renvatins. Passive chilled beams can als be used in additin t active chilled beams when additinal cling is required withut raising the ventilatin levels. The required air quality is realised with a separate ventilatin system. In specific applicatins, passive units can als be used fr additinal heating f rms r t prevent a cld-air drp near large glass rfs r angled gables. Passive units are less suitable fr heating nrmal rms, because the airflw remains at the tp f the rm as a ht air layer, causing stratificatin. 9.1 OKNP 184

187 Prperties and benefits f the OKNP Applicatins in ffices, meeting rms, pen-plan ffices, general areas that already have a separate ventilatin system Yu can create a cmfrtable ccupied zne; High cling capacity; Great architectural design freedm; Virtually insensitive t changes t the rm layut; N nise prductin; Highly suitable fr renvatin prjects, fr example when an existing air-handling unit cannt supply additinal capacity. Cnditining f the rm thrugh the descending effect f cl air due t natural difference in weight Cntrl n the basis f mderate permanent water temperature and water quantity thrugh strng self-regulating effect when rm temperatures rise Available in tw width versins 6 standard heat exchanger lengths Husing lengths available in intervals f 5mm Available as a ceiling integratin/superstructure unit r as a suspended unit. 185

188 The unit has been designed fr 3 pssible applicatins, being: insert mdule fr mdular ceilings with a single T-bar and a mdule size f 300 r 440 mm. substructure system, whereby the unit is freely suspended under a mdular ceiling r fr when there is n suspended ceiling. superstructure system, whereby the unit is psitined n tp f a mdular ceiling. Natural cnvectin requires there t be special penings in the mdular ceiling. The units are available in lengths f 895 t 2995mm. The lw weight f the OKNP makes it easy t handle fr integratin int mdular ceilings. Eurvent Certified Slid Air is a member f the Eurvent certificatin prgramme fr chilled beams. The prducts are certified under number and are listed n the Eurvent website at OKNP 186

189 9.2 Operatin In cntrast t active chilled beams, ventilatin air is nt supplied t passive chilled beams. This means there is n inductin by the nzzles nr inducing a secndary airflw. The OKNP cnsists f a straight, sheet steel husing and a 1-rw heat exchanger that generates an airflw due t temperature differences. Heat exchange in passive units mainly takes place as a result f natural cnvectin and thrugh radiatin t a limited extent. Passive units have a high cling capacity, which is mainly determined by the temperature difference between the heat exchanger itself and the rm temperature. The temperature f the heat exchanger is determined by the water speed and the water temperature. A lwer water temperature increases the cling capacity, but is limited by the risk f cndensatin and draught (if units with a high cling capacity are placed just abve wrk statins). H 187

190 The height f the casing H is imprtant t generating the natural cnvectin, cmparable with the height f a chimney. The chimney effect is caused by the reductin f the air vlume during cling which means it acquires a greater mass per m 3. As a result f this extra weight, the air descends. The lnger the chimney, the greater the weight f the air in this chimney (in relatin t the envirnment). The pressure difference is negligible between the tp and the bttm f the chimney/ chilled beam. Reducing the height f the casing f the OKNP frm 300 mm t 200 mm leads t a lss in cling capacity f apprximately 15-20%, as a result f this reduced chimney effect. Specificatins: Passive chilled beam with high cling capacities and a high cmfrt level. A wide range f dimensins and fitting applicatins - substructure, integratin and superstructure. Available in 6 basic lengths and 2 widths. Lw height: 200 r 300 mm (withut the required height between the unit and the ceiling). Suitable fr cling r the additinal heating f rms with heights f 2.4 t 3.5 m. The materials that are used are 100% recyclable. Casing is made frm galvanised sheet steel. Fr the integratin and substructure versins, the visible parts have an epxy paint RAL clur (standard white RAL 9010). The heat exchanger is made frm cpper pipes with aluminium cling fins. Leak-tightness 100% tested at 15 bar. Husing: Material: Finish f visible parts: Heat exchanger: Pipe material: Fin material: Pst-treatment: Test pressure: galvanised sheet steel. epxy paint standard clur white RAL cpper aluminium nne 15 bar 9.2 OKNP 188

191 9.3 Main dimensins, cnnectin sizes and ceiling integratin Available dimensins and weights: type mdel L mm OKNP 300 OKNP 450 OKNP 600 B mm H mm weight kg & 300 7, & 300 9, & , & , & , & , & 300 8, & , & , & , & , & , & , & & & & & Capacity lss: if H1 = 0,3 x B => 5% reductin in utput if H1 = 0,2 x B => 15% reductin in utput H1 = free height between unit and ceiling. 60 L H1 2x 15 H B 210 B 350 B 490 OKNP 300 OKNP 450 OKNP

192 9.4 Versins and ptins The OKNP range is available in 3 widths, being 295mm, 445mm and 595mm. Bth width versins are standard available in the fllwing lengths: - 895mm mm mm mm mm mm. The passive chilled beam OKNP is available in 2 heights, being 200 and 300mm. Upn request, lwer husing heights are als available, but they will reduce the capacity. Architecturally, the OKNP can be used in three ways, being: - suspended (substructure) - integrated int the ceiling (built-in) - abve the ceiling (superstructure). This versin is supplied standard withut perfrated frnt. Husing f pwder-cated, galvanised sheet steel; versin types: - integrated int ceiling: clur RAL 9010 (white) - substructure/suspended: clur RAL 9010 (white) - superstructure (abve the ceiling): galvanised. 9.3 AND 9.4 OKNP 190

193 9.5 Order cdes OKNP Example rder cde: OKNP 450 / KO OHOO O1O 435x Versin OKNP 2 Type Mdel Height unit mm mm 5 Heat exchanger K Cling 6 Discharge cnfiguratin O Nt applicable 7 Air cnnectin O Nt applicable 8 Water cnnectin H Hrizntal 9 Diameter air cnnectin O Nt applicable 10 Plenum versin O Nt applicable 11 Diffuser O N frnt diffuser 1 Frnt diffuser 12 Versin types 1 Suitable fr T-bar (insert) 4 Substructure - suspended 5 Superstructure (abve ceiling; standard n diffuser) 13 FPC O Nt applicable 14 Actual width B 295 Depends n the versin Actual length L 1195 Depending n mdel size 895 t Clur (RAL) 9010 (standard) Superstructure versins n clur cating 17 Glss value 55% (standard) 191

194 9.6 Installatin requirements and maintenance Fitting The unit has been designed as an insert mdule (dimensins 300, 450 and 600 mm) fr T-bar ceilings, plaster ceilings, and cncealed mdular ceilings. The lw weight f the unit makes it easy t handle in mdular ceilings. The unit shuld be fitted with safety retainers. Only trained, specialised fitters shuld install, cnnect and set the units. Fitting and installatin wrk must be carried ut in accrdance with natinal legislatin and regulatins. It is als essential t cmply with the requirements, as included in this dcument. If certain fitting details are nt entirely clear, please d nt hesitate t cntact us. Besides these requirements, there may be specificatins r sectr-specific requirements that apply t fitting air and water-side accessries. Unpacking and handling the unit must be dne carefully. We recmmend that every unit is lifted by 2 fitters by picking it up at the head end. The lnger and heavier units in particular shuld nt be lifted by the lng sides, because they culd bend. It is custmary t suspend the unit at 4 pints and at 6 pints frm a length f 2000mm. They can be suspended with rds, cable braid, chains r metal hks. Fr applicatins that are integrated r superstructures, ceiling diffusers r ceiling penings must guarantee the supply f the rm air, which must be cled by means f natural cnvectin. The rule f thumb is that the height H1 between the ceiling and the tp f the chilled beam must at least be half f the chilled beam width B. If this height H1 is nly 1 / 3 f the chilled beam width, the cling capacity reduces by 5%. With a height H1 f 1 / 5 f the chilled beam width, the cling capacity will reduce by 15%. The chilled beam fr substructure and integratin applicatin is standard fitted with a frnt plate. Withut a frnt plate, the capacity increases by apprximately 5%. Fr practical reasns the water pipes are usually cnnected with flexible hses t the water circuit f the unit. Slid Air des nt have a preference cncerning cnnectin accessries. Applicatins vary frm cuntry t cuntry and frm fitter t fitter - frm fixed fittings with sldering, clamping with brass cutting rings (using insert bushes), clips with plastic seals, r duble scket cuplings with duble O-ring seals. The external diameter f the cnnectins is 15mm. Quick-release cuplings are nt cnsidered ideal, because if they are tight, they cause significant trque n the slder cnnectins f the heat exchanger, and that may cause water leaks. Befre cmmissining, test the leak-tightness f the cnnectins between the cpper cnnectin pipes and the water hses. We als recmmend insulating the cld-water pipe because f the risk f cndensatin. 9.5 AND 9.6 OKNP 192

195 Maintenance Depending n the quality f the rm air, this may cntain varius levels f dust particles and ther cntaminatin. Due t the natural cnvectin f rm air thrugh the units, the crrespnding electrstatic effect may cause this dirt t accumulate in the chilled beam. In nrmal rm-air situatins, we recmmend t inspect, and if necessary clean, the units annually. Fr cleaning purpses, the frnt f the heat exchanger can be remved easily and withut tls. Standard water parameters: Water-side pressure lss: 0-10 kpa. Water speed: m/s The lcal flw speed in the pipes may never exceed 1.5 m/s. The water must circulate at least nce every 3 days. Water inlet temperature (in cling mde): apprx C. The temperature f the water must always be abve freezing. If this cannt be guaranteed, anti-freeze fluid must be added. Water inlet temperature (in heating mde): apprx C. Maximum water temperature may nt exceed 90 C. Test pressure: 15 bar All Slid Air water circuits are 100% tested at this testing pressure. Operating pressure: 10 bar Water quality: Treated water vlw mineral cmpnent Acidity between ph Carbn dixide less than 25 ppm Sulphates less than 17 ppm Chlride less than 20 ppm 193

196 9.7 Selectin and selectin details Fr cmpsing cmplete rder cdes and selectin details, please refer t the mst recent versin f CB Select, dwnladable frm ur website. 9.6 AND 9.7 OKNP 194

197 CHAPTER 10 Further ptins We can d much mre fr yu. In this Chapter we wuld like t tell yu mre abut special versins, ptins and applicatins f ur chilled beams, abut the cmbinatin with ther installatin parts and abut cntrl cmpnents. We end with sme backgrund infrmatin abut ur cmpany. 195

198 10.1 Special versins The previus Chapters cntain ur standard prgramme f chilled beams. Hwever wide-ranging ur prduct range may be, it is always pssible that yu prefer a different clur r a slightly different size. Different widths r lengths, different diameters air intake (including val), lwer versins - it is all pssible. We als have the knwledge and expertise t design special versins tgether with ur clients r architects and t integrate them int building-cntrl systems, such as: Additinal, integrated ventilatin and return diffuser, including cnnectins Electric heating Special mdular ceilings. Please cntact us fr assistance. HOOFDSTUK 10 AND

199 10.2 Integratin int building-cntrl systems Chilled beams are nt a standalne item - they frm part f a cmplete building-specific climate-cntrl system and can nly perfrm when they are cnnected t pipe systems fr air, cld and warm water and t the crrespnding cntrl systems. As every building has its wn building physics dynamics, a unique gegraphical lcatin and a climate-cntrl system that is tailred t all that, the climate-cntrl system will respnd differently in every single building. Slid Air has mre than 25 years f experience with these design aspects and has a slutin fr every requirement that deviates frm the nrm. Whether it is the external characteristics f the units, fr example because they must fit in a ceiling r expsed slab system, r whether it cncerns prducing units with cntrl equipment, r if the units must prvide ther cmpnents t - n questin is t much and we ften have the right slutin t. That is why yu chse Slid Air, because flexibility is ur strng pint. Cnsult ur technicians fr questins that g beynd the cntent f this catalgue, such as: Is it pssible frm an air technical pint f view t cnnect chilled beams t cnstant and variable vlume systems? Is Slid Air able t supply these systems? Is Slid Air able t supply a cmplete cntrl system? Hw d yu cmbine the cntrl f chilled beams with CO 2 cntrl? Which cntrl-technical safety features are available fr chilled beams, such as cndensatin prtectin in cling mde? 197

200 10.3 Cntrl cmpnents Generally, the amunt f ventilatin air is kept cnstant when chilled beams are used. The amunt is in line with the ventilatin requirement and independent f the required cling r heating capacity. The ventilatin airflw can be kept cnstant by applying mechanical self-perating cntrl valves frm the Slid Air delivery prgramme. In rms with strngly varying numbers f peple in them, the applicatin f variable vlume-flw cntrls is a better and mre energy efficient slutin. Additinally, they can be used t cl with additinal ventilatin utside wrking hurs. The rm temperatures can be cntrlled with lcally psitined thermstats. All these cmpnents are available frm stck at Slid Air. Manual cntrl valve, rund and rectangular Mechanical self-perating cntrl valve Variable vlume flw cntrl, electrically perated Thermstat 10.2 AND

201 10.4 Why Slid Air? Because we are cmplete, reliable, flexible and fast. That is nt just ur pinin, that is what ur clients say t. Cmplete In the area f air-distributin technlgy, we supply pretty much everything. If it des nt exist, we manufacture it urselves. Many Slid Air prducts are develped and manufactured in huse. Fr example, we supply diffusers, VAV systems and chilled beams in all shapes and sizes, fr public buildings, healthcare, industry, yu name it. Our prtfli cnsists f: Chilled beams Ceiling diffusers Wall and transfer grilles Flr and displacement diffusers Weather and penthuse luvres Variable and cnstant vlume units Fire dampers and fire blcks Vlume cntrl dampers Attenuatrs These prducts are certified in accrdance with a range f natinal and internatinal standards. Please cnsult the specific prduct sheets fr the details n ur website r lcal ffice. 199

202 Reliable Reliable des nt nly mean that we fulfil ur prmises - that ges withut saying. We are referring t the reliability f ur advice. Increasing numbers f clients knw hw t find us when they need advice n climatecntrl systems, air distributin, integratin ptins, energy savings, etc. Our technical sales staff is highly experienced and wrk daily n keeping their knwledge at the leading edge. Yu can ask them any questin and they will cnsider the issue tgether with yu. Flexible Despite ur extremely wide range f prducts, ur clients regularly need smething a little extra. A different size, a different versin r different mdificatins? N prblem. If needs be we develp a cmpletely new prduct tgether with the client. Fast Due t ur efficient prductin prcess, intelligent stck management and ur excellent lgistics department we can ffer shrt lead times. If smething needs t be changed r amended - that will nt take lnger. We are knwn fr that and we treasure that reputatin

203 10.5 Missin and Strategy Slid Air cntributes t a mre cmfrtable and healthier indr climate in living and wrking envirnments by manufacturing and supplying advanced, lw-energy and sustainable indr climate slutins and their cmpnents. We strive twards maximum quality fr ur clients and a minimum burden n the envirnment. Health Slid Air indr climate slutins Envirnment Lw-energy Cmfrtable 201

204 Our ambitins In the Netherlands, the birthplace f ur cmpany, we have ccupied a tp psitin fr many years. We strive t expand this psitin twards the rest f the EU. Besides the Netherlands, we supply a cmprehensive package f climate-technical services and prducts in France, the UK and Germany. Thrugh distributrs, we are als undertaking mre activities in ther Eurpean cuntries, the Middle East, the US and Australia. We fcus n the fllwing markets: ffices educatin healthcare industry retail husing Slid Air derives its strength frm a cmbinatin f: Being able t respnd quickly t client requirements during the advice and design stage Flexible and quick manufacture and supply f standard and tailred prducts A strng research and develpment team, wn prduct develpment and wn prttype facilities Excellent dcumentatin fr all ur prducts A brad and well-knwn prduct package with cmpetitive price and quality levels Energy-saving perfrmance f prducts due t efficient heat/cld transprt, lw-temperature heating, high leak-tightness classes and sustainable materials A mtivated and experienced team f emplyees

205 Histry f Slid Air

206 Slid Air is part f the Dutch Nijburg Industry Grup, and initiates the develpment f new, innvative prducts. The cmpanies in this grup all perate in the area f climate cntrl in buildings and have ver 40 years experience. Every cmpany has its wn specialisatin. In majr prjects we can jin frces; furthermre, we encurage each ther and keep each ther up t date f innvatins t ensure the expertise is put t ptimum use in every cmpany

207 Prductin and testing The Nijburg Industry Grup has its wn factries in the Netherlands and the UK. These factries have their wn engineering departments; tgether with the Slid Air sales department and the client they develp clientspecific slutins and prducts. This als helps t respnd t the architectural requirements f clients and advisers. Anther majr advantage f ur wn prductin and test facilities is that we can supply a large range f tp-quality chilled beams, diffusers and grilles, regulating valves and ther air-technical prducts quickly and flexibly. 205

208 Certificatin There is really nly ne thing that we cannt d urselves - certificatin. That is dne by expert cnsultancy firms, such as TNO, Peutz and WSP, wh can cnduct independent tests. The indr-climate slutins we advise are tested regularly in test rms, where client-specific slutins can als be simulated. Clients are always welcme t attend. Even thugh we can measure and prve everything, a cmfrtable indr climate is first and fremst f questin f sensatin

209 10.7 References 420 Gerge Street Sydney, Australia Use: ffice building with 5-Star Green Star (v2) design rating Installed: 1400 chilled beams and 600 VAV cntrllers Architect: Batessmart Use: cmmercial lease Legnan Milan, Italy Use: Hspital Installed: heat-pump system with 1029 chilled beams Cntractr: Hitrac engineering User: Legnan hspital Radbud Nijmegen, the Netherlands Use: Hspital Installed: entire Slid air range Architect: EGM Cntractr: Krpman User: Radbud medical centre Oradur Paris, France Use: ffice building Installed: 1480 chilled beams and 150 VAV cntrllers Architect: Unin Investment Cntractr: Bernet Use: cmmercial lease Waterfrd High Schl Cnnecticut USA Use: High Schl Installed: 300 high capacity chilled beams Cnsultant: JCJ Architecture Cntractr: H.H.S. Mechanical Cntractrs, Inc. 207

210 Mercedes Wrld United Kingdm Use: exhibitin building Installed: chilled beams Cntractr: Spie Matthew Hall User: Mercedes museum Mediatheque Clmar, France Use: library Installed: 300 chilled beams Cntractr: Stihle Freres SAS User: Mediatheque Clmar Mntyer Brussels, Belgium Use: ffice building Installed: 500 chilled beams Architect: Emerc Cntractr: Herpain Use: cmmercial lease Prinsenhf The Hague, the Netherlands Use: ffice building Installed: heat-pump system with 4000 chilled beams Cntractr: Wlter & Drs TBI Techniek Use: cmmercial lease Millennium Twer Amsterdam, the Netherlands Use: ffice building Installed: heat-pump systems with 2600 chilled beams and 600 air-cntrl valves Adviser: Deerns Cntractr: Schulte & Lestraden User: Reed Elsevier Publishers

211 11 Cntact 1 Netherlands Slid Air Internatinal Paasheuvelweg BJ Amsterdam Zuid-st Tel +31 (0) Fax +31 (0) Pstbus 22756, 1100 DG Amsterdam Zuid-st 2 France Slid Air Sarl 31 rue des Peupliers Nanterre France Tel. +33 (0) Fax: +33 (0) france.slid-air.cm 3 Netherlands Slid Air Luchtverdeeltechniek BV Paasheuvelweg BJ Amsterdam Zuid-st Tel +31 (0) Fax +31 (0) Pstbus 22756, 1100 DG Amsterdam Zuid-st 209

212 4 Germany Slid Air GMBH Jhansenaue 60, Krefeld Pstfach , Krefeld Germany Tel +49 (0) Fax +49 (0) Netherlands Nijburg Industry Grup (head ffice) De Vshlen TG Sappemeer Tel +31 (0) Fax +31 (0) Pstbus 14, 9610 AA Sappemeer