CHAPTER 3 Chilled beam OKNI 300 & 400

Transcription

1 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

2 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

3 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

4 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

5 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

6 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

7 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

8 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

9 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

10 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

11 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

12 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

13 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 P 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 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

14 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

15 Selectin example OKNI - type 300 and mdel 1800 COOLING Primary AIR Cling capacity air trm -tpri C Nzzle A 1 WAT ER 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 l/s m 3 C W 9,9 W 9, Nzzle B 2 l/s m 3 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

16 Selectin example OKNI - type 300 and mdel 1800 HEATING Primary AIR Heating capacity air tpri -trm C WAT ER 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 C Nzzle B 2 l/s m 3 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

17 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 C W 9,9 W 9, Nzzle B 2 l/s m 3 C W 9,9 W 9, Nzzle C 2 l/s m 3 C W 9,9 W 9,

18 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 C Nzzle B 2 l/s m 3 C Nzzle C 2 l/s m 3 C OKNI 54

19 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 C W 9,9 W 9, Nzzle B 2 l/s m 3 C W 9,9 W 9, Nzzle C 2 l/s m 3 C W 9,9 W 9,

20 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 C Nzzle B 2 l/s m 3 C Nzzle C 2 l/s m 3 C OKNI 56

21 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 C W 9,9 W 9, Nzzle B 2 l/s m 3 C W 9,9 W 9, Nzzle C 2 l/s m 3 C W 9,9 W 9,

22 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 C Nzzle B 2 l/s m 3 C Nzzle C 2 l/s m 3 C OKNI 58

23 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 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 C W 9,9 W 9,

24 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 C Nzzle B 2 l/s m 3 C Nzzle C 2 l/s m 3 C OKNI 60