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WKD 381 Diffuser - 12 Pages

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Catalogue excerpts

NAD Klima Industrial diffuser

 Open the catalogue to page 2

Industrial diffuser Description, Areas of application and Benefits Turbulence Chamber Swirl Diffuser WKD 381 WKD 381 is a high induction swirl diffuser with a square front plate, a turbulence chamber integrated in the plenum box and a steering nozzle. The turbulence chamber contains a ringshaped eccentric air control cylinder of ABS with straightening segments. This diffuser is an excellent choice for heating and cooling applications in commercial and industrial ventilation projects where the ceiling is more than 5 m high. Jet dispersion can be adjusted manually or via actuator when needed to...

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NAD Klima Industrial diffuser Configuration and Method of operation cylindrical turbulence chamber with air control elements 2, a diffuser adjustable steering (wide-angle) Tangential air is flowing through the slotted steel into the turbulence chamber 1, creating an intensive swirling The swirl intensity of the air entering above the nozzle 2 is reduced by the nozzle's straightening characteristics. The position of the nozzle effects the overall swirling of the air so that both horizontal and vertical jets of varying induc- tion and penetration depth can be created. Method of operation in heating...

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Industrial diffuser Sizes and Induction Ratio WKD 381, plenum with side spigot Temperature ratio and Influence of the nozzel setting on the airflow profile Lenght of the airflow direction x ou x+y [m] Displacement flow Axial - Radial Flow WKD 381, plenum with top spigot Subject to technical changes. Version 13 / 06 / 2012 In case of large temperature differences, you can reduce the airflow velocities mentioned in the diagram by 30% by ajusting the nozzle. (s = 20 mm)

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Industrial diffuser Aerodynamic data and ranges of application Aerodynamic data of WKD 381 Nominal size [-] Specification : The minimum spacing for suspended installation is a height of 4.0 m so that velocity in occupied areas does not exceed 0.2 m/s. Penetration depth when heating y for ∆T = +10°C. Critical air flow distance ∆T = - 8°C. Subject to technical changes. Version 13 / 06 / 2012

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NAD Klima Industrial diffuser Rating Diagram Ceiling airflow rating Airflow distance y after blast [m] Subject to technical changes. Version 13/06/2012

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Critical airflow distance xcrit [m] Critical airflow distance xcrit [m] Critical airflow distance xcrit [m] Critical airflow distance xcrit [m] Subject to technical changes. Version 13 / 06 / 2012

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Note : The absorption of the room is not considerated. Subject to technical changes. Version 13 / 06 / 2012

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Industrial diffuser Vertical penetration in heating operation Max. air velocity at height of 1.8 m over floor: 2. A-rated acoustic power level LWA, Pressure Minimum clearance between diffusers 1. The prefered diffuser size DN 600 /1 ® follows from the "Ranges of application" 2. The following values can be read from the rating diagram "Ceiling stream" A-rated acoustic power level: 35 dB(A) ® Total pressure drop: 25 Pa.© minimum diffuser clearance of 2 x 1.15 m = Supply air temperature difference: - 6°C © Critical air flow distance xcrit = 1.9 m©follows from the diagram "Critical air flow distance...

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Industrial diffuser 1- Description and physical characteristics 1.1 Swirl air diffuser WKD 381 with square or round steel front panel with white coating (RAL 2003). Model with vertical slot channels arranged in circle with integrated eccentric drums made from ABS. Adjustment of air discharge carried out manually or by means of electrical servo-motor. 1.2 Mechanism adjustment versions: manual adjustment at diffuser or motorized adjustment with servo-motor and power supply cable. 3 – Mounting 3.1 Diffuser always supplied with galvanized steel plenum box. 4 – Balancing 4.1 Balancing of diffuser WKD...

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

 Open the catalogue to page 12

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