Air curtain for cooled rooms

Air curtains for cooled rooms are recommended with a one-sided supply of outdoor air from above in the form of a flat jet at an angle to the plane surface of the gate toward the cold indoor air (Fig. 7.87). 

Air curtains for cooled rooms are used in all types of rooms with artificial cooling of air vegetable stores, cold rooms, freezers, air-conditioned plants and storehouses, etc. Installation of air curtains for cooled rooms considerably reduces cold losses through the open gate and also reduces undesirable variations in temperature in the gate zone inside and outside the cooled room. 

For air curtains with unheated outdoor air, air curtains for cooled rooms, air curtains with long passages, or air curtains for process equipment f = 20-40... 

---