Jet nozzle JN
Adjustable nozzles are the ideal solution when the supply air in a ventilated room has to travel long distances from the supply point to the occupied zone. The deflection angle (±30°) can be adjusted manually or by…
1How much air are we supplying?
2Size
3RAL colour
Performance
Section through the room at the diffuser. Velocity and temperature on the jet axis come from the calculation verified against the manufacturer's selection software; the surrounding field is an engineering model of the jet and return flow, not a full CFD analysis. Lines show air particle paths.
Temperature difference in the occupied zone ≈ 6.12 K — noticeable; better increase the size or the distance.
• There will be a draught near people. Increase the size or the number of diffusers, or choose a swirl type.
Order code
JN (RAL 9016) D400
€231.89
€231.89 × 1 pcs
Manufacturing: 10 working days
Description and manufacturing
Purpose
Adjustable nozzles are the ideal solution when the supply air in a ventilated room has to travel long distances from the supply point to the occupied zone. The deflection angle (±30°) can be adjusted manually or by an actuator. The airflow direction is changed for heating or cooling mode.
Cooling mode
Cooling mode is set with a positive deflection angle of up to 30°. The supply air jet is directed towards the ceiling, but because cold air is denser, the jet bends increasingly towards the floor as the distance from the nozzle grows. When the supply air jet reaches the occupied zone, the temperature difference between the supply air and the room air, as well as the air velocity, have dropped to a comfortable level.
This principle is used for long distances.
Heating mode
Heating mode is set with a negative deflection angle of -30° or less. The supply air jet is directed into the occupied zone. Because warm air is less dense, the jet holds well to the surface. When the supply air jet reaches the occupied zone, the temperature difference between the supply air and the room air, as well as the air velocity, have dropped to a comfortable level.
Design and materials
Swivel nozzles are made of aluminium and powder coated in RAL 9010 as standard. Other RAL colours are available on request.
Manufacture
Diffusers of this series are available in standard diameters only:
D-100, D-125, D-160, D-200, D-250, D-315, D-400
Ordering example and installation
Jet nozzle JS D250 (RAL 9010) – nozzle with a 250 mm connection diameter, white.
Scope of delivery
- VD plenum box
