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LDK Diffuser - 16 Pages

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Catalogue excerpts

Swirl diffuser LDK model Description, areas of application et benefits . . . . . . . . . . . . . . . . . . . . . . . . . . LDK 1 Configuration and aerodynamic data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - LDK 250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LDK 10 Acoustic power level and Pressure loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LDK 11 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LDK 12 Codification . . . . . . . . . ....

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Swirl diffuser Description, areas of application, product benefits LDK is a high induction swirl diffuser with a central overall blade adjustment or separate individual blade adjustment. The nozzle contour can be either round or square. This diffuser is ideal for installation in ceilings, but can be used for wall installations in some cases. Its continuous adjustability means that the LDK diffuser offers nearly unlimited freedom in controlling air. Velocity, penetration depth and the induction ratio all can be adapted to the prevailing conditions as a part of comfortable climatisation. Subject...

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NAD Klima Swirl d iff user Configuration and aerodynamic data Swirl diffuser LDK is designed as a nozzle shaped circular duct piece. It has a radial recess with cylindrical flanging which makes the piece end flat. Six individual rotating blades are embedded in a central hub and form an interior, continuously variable guide device. The diffuser is available in the applications where the installation Depending on the blade setting, the discharge air will be forced into a swirling stream. Changing the angle of the blade creates an analogue variation of the jet dispersion angle, so that when fl ush...

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NAD Klima Swirl Diffuser |] = possible range of application Subject to technical changes. Version 14/08/2012

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NAD Klima Swirl diffuser suspended ceiling with central overall (Z) or separate (S) rounded nozzle contour (R). Nozzle is made of aluminum ZR = guide device: plastic SR= guide device: steel with central overall (Z) or separate (S) square nozzle contour (Q). Nozzle is made of aluminum ZQ = guide device: plastic SQ = guide device: steel with central overall (Z) or separate (S) blade adjustment and long rounded Nozzle is made of aluminum ZV = guide device: plastic * other dimensions available on request. Subject to technical changes.Version 14/08/2012

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Swirl Diffuser Dimensions and Weight Plenum Box n Damper integrated in plenum box honeycomb rectier perforated plate inlet as separate shaped piece Nominal Size Subject to technical changes. Version 14 / 08 / 2012

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Swirl Diffuser Specifications : Installation height : Air flow / diffuser : Heating mode Cooling mode Required : - Nominal size of diffuser - Minimum spacing between diffuser - Blabes angles in heating mode, isotherm and cooling - Acoustic power level LWA - Pressure loss Δpt Solution : 1. On diagram “Range of application”, we find the nominal size : DN200. 2. With a air flow of 250 m3/h, an installation height of e = 3.0 m and the intersection of the heating line at 10°C, we find the blades angle at : α heating = 45°C. 4 avoid mutual negative influences of the air flow pattern of two outlets....

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Swirl Diffuser total air volume flow air volume flow per diffuser Blade angle a Isotherm [°] Suggested minimum air velocity for cooling, against temperature difference and minimum blade angle a >45°. Blade angle a Isotherm [°] Subject to technical changes. Version 14/09/2012

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Swirl Diffuser Number of air diffusers = total air volume flow air volume flow per diffuser 5°C recommandable planning Installation height e [m] Blade angle α Heating [°] = vx = Velocity in the staying room ∆T = Temperature difference recommandable planning Blade angle α Isotherm [°] Blade angle α Cooling [°] Blade angle α Isotherm [°] Suggested minimum air velocity for cooling, against temperature difference and minimum blade angle α Subject to technical changes. Version 14 / 09 / 2012

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total air volume flow air volume flow per diffuser Blade angle a Isotherm [°] Suggested minimum air velocity for cooling, against temperature difference and minimum blade angle a>45° Blade angle a Isotherm [°]

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Swirl Diffuser Number of air diffusers = total air volume flow air volume flow per diffuser 2°C recommandable planning Blade angle α Heating [°] = vx = Velocity in the staying room recommandable planning Blade angle α Isotherm [°] Blade angle α Cooling [°] Blade angle α Isotherm [°] Suggested minimum air velocity for cooling, against temperature difference and minimum blade angle α Subject to technical changess. Version 14 / 08 / 2012

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Acoustic power level and pressure loss A-rated acoustic power level L WA [dB(A)] Blade angle A-rated acoustic power level L WA [dB(A)] Blade angle A-rated acoustic power level L WA [dB(A)] Blade angle Subject to technical changes. Version 18 / 09 / 2012

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Swirl Diffuser Specifications and codification for LDK Specifications 1 - Physical Description and Characteristics 1.1 Adjustable swirl-blade air diffusers LDK of NAD Klima for comfort made of nozzle-shaped aluminum pipe. Equipped with internal control unit and swirl blades (RAL 9010). 2.1 Model mounts directly to round duct or plenum box made from galvanized steel. 1.2 Round nozzle outflow shape with internal plastic control, central adjustment (ZR), or with internal sheet steel control unit, individual adjustment (SR), or 1.3 Square nozzle outflow shape with internal plastic control, central...

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Training room, Congress centre, Hamburg, Germany

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NAD Klima 144, Léger St., Sherbrooke (Québec), Canada J1L 1L9 • T : 819 780-0111 • 1 866 531-1739 • F : 819 780-1660 • info@nadklima.com

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