Catalog Swirl diffuser DAL 359

Transcription

1 Catalog DAL 359

2 Restaurant, Lingen, Germany

3 DAL 359 Model Description, area of application and product benefits DAL Configuration DAL Method of operation DAL Aerodynamic data and Range of application DAL Dimensions and Weights DAL Diagrams DAL Critical air flow distance in cooling and example DAL Specifications DAL Codification DAL content DAL 359 C

4 Restaurant in Bockenem, Germany

5 Description, Areas of application and Benefits DAL 359 Diffuser type DAL 359 is a highly inductive swirl diffuser with a round or square front plate and fitted air control blades of ABS. It is suitable for use in both closed and open ceiling systems and allows optimal adaptation of the air distribution system to the prevailing site conditions. The large number of air conducting elements, with optimized airflow and acoustic characteristics, makes this device visually attractive and effective in managing high cooling loads in low ceiling heights. Step-by-step reduction of the discharge free area makes it possible to adjust the device to meet changes in volume flow and discharge temperatures even after installation. The use of blind elements or so-called double clips allows the discharge direction, length or airstream thickness to be varied while maintaining optical appearance. Areas of application - Comfort zone - Clean rooms - Administration areas - Computer rooms - Meeting rooms - Multipurpose hall - Department stores - Systems with constant and variable volume flow Product benefits - Low acoustic power level in high volume flow - Rapid reduction of velocity and temperature differences through high induction - Change of airflow direction and air stream pattern possible - Ability to influence the discharge velocity and thus penetration depth Subject to technical changes. Version 14 / 08 / DAL 359 1

6 Configuration Diffuser type DAL 359 consists of a round or square front plate and fi tted air control blades of ABS. Diffusers up to size 600 have the front plate attached to the plenum box with a concealed center screw with crossbar. Size 800 has 4 screws around the border. DAL 359-R-400 DAL 359-Q-400/400 DAL 359-Q-400/603 DAL 359-R-500 DAL 359-Q-500/502 DAL 359-Q-500/603 DAL 359-R-600 DAL 359-Q-600/603 DAL 359-R-800 DAL 359-Q-800/ DAL 359 Subject to technical changes. Version 23 / 08 / 2012

7 Method of operation rotating discharge one-side horizontal discharge two-side horizontal discharge The blades, designed as wing-shaped profiles, produce a favorable deflection of the vertically streaming air into the horizontal direction of the face plate. Form-fitting bearings and grated components prevent any accidental or unallowable adjustment. Rotating around the bearing center achieves a defined and reproducible reduction by 50% of the discharge free area. A greater penetration depth and flat, horizontal air distribution is achieved with the same discharge volume flow. By using vertically discharging air control elements (double clips), the horizontal airstream can be enlarged. In flush mounted installations, this airstream pattern allows shorter distances between the diffusers, whereby higher air change can be achieved. Use of optional blind clips can further increase the discharge direction. ING, Saint-Hyacinthe Subject to technical changes. Version 14 / 08 / DAL 359 3

8 Aerodynamic data and Ranges of application DAL 359 Aerodynamic data Nominal size [-] V [m / h] Minimum spacing [m] p [Pa] LWA [db(a)] x crit [m] Specifications : The minimum spacing for heights of 3 m so that velocity in occupied areas does not exceed 0.2 m/s. Temperature difference T = -10 Note : The absorption of the room is not considered. For a comparison to north american values, reduce the noise power level of -10 db. DAL 359 Ranges of application = ideal range of application = possible range of application DN 800 DN 600 DN 500 DN 400 cfm [m /h] Air volume flow V 0 [m 3 /h] DAL 359 Subject to technical changes. Version 14 / 08 / 2012

9 Dimensions and Weights DAL 359 Dimensions / Weights Square plenum box DAL 359 Dimensions / Weights Round plenum box Size DN Size DN Size A Size Ø A Size B Size B Size C Size C Size ØD Size ØD Size E Cote E Size F Size Ø F Weight [Kg] Weight [Kg] A eff [m 2 ] A eff [m 2 ] Hole for hanging, 4 x Ø6.3 ØD Hole for hanging Perforated plate throttle E C B E ØD Perforated plate throttle Perforated plate Perforated plate C F A ØF ØA Subject to technical changes. Version 23 / 08 / DAL 359 5

10 Diagrams DN 400 Ceiling stream rating A-rated acoustic power level L WA [db(a)] Air flow distance y [m] after conjunction Pressure loss p t [Pa] Air flow velocity v max Airflow distance x [m], Air volume flow V 0 [m 3 /h] DN 500 Ceiling stream rating A-rated acoustic power level L WA [db(a)] Air flow distance y [m] after conjunction Pressure loss p t [Pa] Air flow velocity v max Airflow distance x [m] Air volume flow V 0 [m 3 /h] DAL 359 Subject to technical changes. Version 14 / 08 / 2012

11 DN 600 Ceiling stream rating A-rated acoustic power level L WA [db(a)] 2 Air flow distance y [m] after conjunction 5 Pressure loss p t [Pa] 3 Air flow velocity v max 6 Airflow distance x [m] 1 Air volume Subject flow to technical V 0 [m 3 changes. /h] Version 14 / 08 / 2012 DN 800 Ceiling stream rating A-rated acoustic power level L WA [db(a)] Air flow distance y [m] after conjunction Pressure loss p t [Pa] Air flow velocity v max Airflow distance x [m], Air volume flow V 0 [m 3 /h] Subject to technical changes. Version 14 / 08 / DAL 359 7

12 Critical air flow distance in cooling and Example Critical airflow distance x crit [m] Critical airflow distance x 8 DN 400 DN 500 T Temperature difference T Induction Ratio* Air volume flow V 0 [m 3 /h] DN 600 DN Temperature difference 1 Air volume flow V 0 [m 3 /h] Critical airflow distance x Critical airflow distance x T Temperature difference Air volume flow V 0 [m 3 /h] T Temperature difference Air volume flow V 0 [m 3 /h] Temperature Ratio* Important : The critical airflow distanceshould always be greater than half the minimum clearance. Specification : Room height : H = 3.50 m Air volume flow per swirl diffuser: :. V0 = 600 m 3 /h Max. cooling temp. difference : T0 = -8 Max. air velocity at height of 1.80 m : V max = 0.2 m/s 4 Required : 1. Diffuser size 2. Acoustic power level L WA 3. Pressure loss Δp t 4. Minimum clearance between the diffusers 5. Critical airflow distance (removal of the airflow from the ceiling at cooling) 6. Induction ratio 7. Temperature ratio Solution : 1. The prefered size that follows from the Ranges of application is DN , 3., 4. From the ceiling stream rating diagram for the size DN 600 diffuser and a volume flow of 600 m 3 /h 1 the following values are evident: A-rated acoustic power level : 32 db ( 22 db considering the absorption of the room) Total pressure loss : 12 Pa 3 An installation clearance of : y = H = (3.50 m m = 1.70 m) 5 2 x 1.55 = 3.10 m From the critical airflow distance with cooling an airflow distance of 1.90 m 8 results for diffuser size DN 600, a volume flow of 600 m 3 /h 1 and a temperature difference of 8. 7 i [ ] x + y [m] 6 Txy T x + y [m] 6 6. From the Induction Ratio diagram a lenght of the course of an airstream of (x+y) = 1.55 m m = 3.25 m and i = From the Temperature Ratio diagram a temperature ratio of results for the same lenght of the course of the airstream. 9 * For DN 400, 500, 600 and DAL 359 Subject to technical changes. Version 14 / 08 / 2012

13 DAL 359 Specification 1- Description and physical characteristics 1.1 Square or round swirl air diffuser DAL 359 with adjustable air control clips made from ABS (black or white), arranged in radial. 1.2 Air control clips guarantee horizontal air flow 360 even with free suspension of the diffuser. 1.3 The edge of the front panel is suitable for both standard suspending ceiling and gypsum ceiling. 1.4 Front panel coating inside and outside according to RAL color chart. 1.5 Unless specified, items air control clips are supplied in black color. 3 - Mounting 3.1 The diffuser is complete with a plenum box from the manufacturer. The plenum made from galvanized steel 24 gages and should include a perforated plate. Plenum supported at each corner and the input at side or above the plenum. The interior borders of the plenum will be sealed with silicone. 4 - Balancing 4.1 Balancing of diffuser DAL 359 must be performed by a technician in HVAC systems. 4.2 The technician must factor in the air volume correction when a balometer is used (CFB factor) 2 -Performance 2.1 Diffuser performance DAL 359 is guaranteed by simulation software, indicating the pressure drop and sound power level generated and showing the nominal air velocity and the critical path of the flow depending on the initial temperature differential in heating mode, isothermal mode or cooling mode to 1.8 m above the floor or as requested by the engineer. 5 - Required quality : NAD Klima, DAL 359 model 2.2 The diffuser should provide comfort when in situation of variable air flow up to 25% of total flow. Subject to technical changes. Version 14 / 08 / DAL 359 9

14 Codification DAL 359 Product Q = Square - R = Round S = Standard swirl flow 1 = Flow on 1-side 2 = Flow on 2-side W = White blades B = Black blades O = without blades 9003 = White 9010 = Cream = RAL colours* (write the number of colour) Configuration Flow Blades Colour 400, 500, 600, , 502, 603, 800 Sizes DN (603 for 24''X24'' T-bar) Outer sizes DN S = Plenum with input on side T = Plenum with input on top X = Without plenum X = Without insulation I = With acoustic insulation F = With fireproof insulation and fireproof damper X = Without damper D = With damper (fot gypsum ceiling) Volet Plenum Insulation Damper DAL359 - Q - S - W S - X - X Example Notes : Blue : Standard *Write the number of 4-digits of the colour of RAL chart of colours. Any specification such as changing the height of the plenum or installing a firewall component, must be indicated DAL 359 Subject to technical changes. Version 23 / 08 / 2012

15 ING, St-Hyacinthe, Québec ING, St-Hyacinthe, Québec

16 NAD Klima 144, Léger St., Sherbrooke (Québec), Canada J1L 1L9 T : F : info@nadklima.com