People who use subcoolers know that the cooling effect of the cooler is very good, and its effect is comparable to that of air conditioners, and in terms of energy saving, it is more than a little bit stronger than air conditioners, so when many people choose refrigeration to stir up Air conditioners are often given priority. When selecting the air cooler, you need to choose the film spacing. Many people don't understand the selection of the film spacing. Let me introduce it to you below.

      Choice of air-cooler space

      Air cooler As the evaporator commonly used in refrigeration systems, its proper selection directly affects the efficiency of the refrigeration system. As we all know, the chiller will use different fin spacing according to the required ambient temperature. In our common air cooler, the fin spacing is 4mm, 4.5mm, 6 ~ 8mm, 10mm, 12mm, and there is a variable pitch between front and back. The fin spacing is small, suitable for high temperature environment; the lower the temperature of the cold storage, the larger the fin spacing required. If the selection is unreasonable, the fins will be frosted fast, and the wind passage will be blocked soon. It is difficult to cool the cold storage, and the efficiency of the compressor cannot be exerted, resulting in increased power consumption of the refrigeration system.

      According to engineering experience, generally 0 ℃ ~ 20 ℃ environment, such as workshop air conditioners, cool storage, cold storage wear hall, fresh storage, air conditioning storage, ripening storage, etc., choose the 4mm or 4.5mm air cooler; -16 ℃ In the environment of ~ -25 ℃, such as low-temperature freezing and refrigerating, low-temperature logistics warehouse, the air cooler with a slice distance of 6mm ~ 8mm is selected; and the quick-freezing warehouse of -25 ℃ ~ -35 ℃, generally use a cooler with a slice distance of 10mm and 12mm. If the fast-frozen cargo has high humidity, the variable blade is selected from the cooler, and the distance between the fins on the inlet side can reach 16mm.

      However, in some occasions, the fin pitch of the cooler cannot be selected based on temperature alone, such as rapid pre-cooling and acid removal of meat and vegetables. Although the temperature of the cold room is generally set above 0 ° C because of the high incoming temperature and cooling Fast speed and high humidity of the goods. If the air cooler with 4mm or 4.5mm space is used, it is not suitable. It is necessary to use an air cooler with 8mm or even 10mm space.

      There is also a fresh-keeping store similar to the storage of fruits and vegetables such as garlic and apples. The suitable storage temperature is generally -2 ° C. Such a fresh-keeping or modified atmosphere store with a storage temperature below 0 ° C also requires the use of cold air at a distance of not less than 8mm. Machine to avoid rapid air-frosting that can cause blockage of the air duct and increase power consumption.