Operation of the Air Curtain

The automation of an air curtain should provide for the following:

• Starting of the fan when the serviced aperture is opened and when the air temperature near the closed aperture deviates from a set value

• Stopping of the fan after the serviced aperture is closed and restoration of the air temperature near the closed aperture to a set value

• Controlling supply air flow in proportion to the square root of the change of the aerostatic pressure difference across the aperture: qm 0 — AP0-5

• Controlling the supply air temperature (in the case of air curtains with heated air) in proportion to the change in temperature of the outdoor air

Posted in INDUSTRIAL VENTILATION DESIGN GUIDEBOOK