Circular air diffuser DUK

rectangularceilingfixed

Adjustable and fixed jet nozzles achieve long throw distances and have excellent acoustic properties Nominal sizes: 100, 125, 160, 200, 250, 315 and 400 mm Visible parts made of aluminium For variable and constant volume flows Low sound power levels due to aerodynamically optimised nozzle contours Discharge angle can be adjusted manually or with an actuator Quick and easy to fix, concealed fixing Exposed surface in RAL CLASSIC colours Circular spigot Connection pieces for circular and rectangular ducts Internal or external actuators for adjusting the discharge angle Jet nozzles are the preferred solution wherever the supply air has to travel large distances from the point of discharge to the occupied zone. It is possible to adapt the discharge angle, and consequently the direction of the airflow, to heating or cooling mode. The supply air to room air temperature difference may range from –12 to +20 K. Cooling mode is possible with a positive discharge angle of up to 30°. The supply air jet is directed towards the ceiling, but the higher density of cold air results in an increasing deflection of the air jet towards the floor as the distance from the jet nozzle increases. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity have been reduced to comfortable levels. This principle of operation allows for long throw distances.