How to choose the fan for cold storage
The cooling fan is used as the evaporator of refrigeration system, and its choice is appropriate and directly affects the efficiency of the refrigeration system.It is well known that the cooling fan uses different fin spacing depending on the ambient temperature required. Our common cold fan, the fin spacing is 4mm, 4.5mm, 6-8mm, 10mm, 12mm, and before and after the film.Small spacing of fins, suitable for high temperature environment;The lower the temperature of the refrigerator, the greater the space between the fins.If the choice is not reasonable, the fin frost is fast, and the wind tunnel will be blocked quickly, the cold storage will not be cool, the compressor efficiency will not come out, resulting in the increase of the electricity consumption of the refrigeration system.
According to engineering experience, generally 0 ℃ ~ 20 ℃ environment, such as workshop air conditioning, a cool library, cold storage hall, fresh, and controlling, ripening library, etc., choose piece of air cooler for 4 mm or 4.5 mm;
- 16 ℃ to 25 ℃ environment, such as low temperature refrigeration and low temperature logistics base, choose from 6 mm to 8 mm of cooling fan;25 ℃ ~ 35 ℃ - frozen library, generally selected from 10 mm and 12 mm air cooler, frozen goods humidity is big, will choose to change from the cooling fan, into the wind side fin spacing can achieve 16 mm.
But there are some occasions, it is not simple to choose according to the temperature of air cooler fin spacing, such as meat, vegetables, fast precooling, PaiSuan, although cold room temperature usually set at 0 ℃ above, because of the high temperature, cooling speed, humidity is big, the goods if you choose from 4 mm or 4.5 mm air cooler, is not appropriate, must use piece from 8 mm even 10 mm air cooler.
There are similar to the storage of fresh garlic, apples and other fruits and vegetables, appropriate storage temperature is in commonly - 2 ℃, as the storage temperature is lower than 0 ℃ preservation or controlling, also need to choose from no less than 8 mm air cooler, to avoid rapid frosting cause air duct blockage, increase power consumption.