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How To Choose The Right Evaporator?

As we all know, according to the required ambient temperature, the cooling fan will use different fin evaporator spacing.

The most commonly used air coolers in the refrigeration industry have fin spacings of 4mm, 4.5mm, 6~8mm, 10mm, 12mm, and front and rear variable fin spacings. The fin spacing of the cooling fan is small, and this type of cooling fan is suitable for use in a high-temperature environment; the lower the temperature of the cold storage, the larger the spacing requirement of the cooling fan fins. If an unsuitable air cooler is used, the frosting speed of the fins will be too fast, which will soon block the air outlet of the air cooler, which will cause the temperature in the cold room to cool down slowly. Ultimately, the power consumption of the refrigeration system continues to increase.

According to our company's years of experience in cold storage engineering construction, we have summarized the following types of air coolers for different use environments, and quickly select the air coolers suitable for different types of cold storage.

1. High-temperature cold storage (storage temperature: 0 ℃ ~ 20 ℃): For example, workshop air conditioning, shady warehouse, cold storage hall, fresh-keeping warehouse, air conditioning warehouse, ripening warehouse, etc., generally use cold air with fin spacing of 4mm~4.5mm machine.

2. Low-temperature cold storage (storage temperature: -16℃~-25℃): For example, for low-temperature refrigeration and low-temperature logistics warehouse, the air cooler with fin spacing of 6mm~8mm should be selected.

3. Quick-freezing warehouse (storage temperature: -25 ℃ ~ -35 ℃): generally use the air cooler with fin spacing of 10mm ~ 12mm. If the quick-freezing cold storage requires high humidity of the goods, the cooling fan with variable fin spacing should be selected, and the fin spacing on the air inlet side can reach 16mm.

However, for some cold storage with special purposes, the fin spacing of the cooling fan cannot be selected simply according to the temperature in the cold storage. For example, the rapid pre-cooling and acid discharge of meat and vegetables, although the temperature of the cold storage room is generally set at 0 ℃ or higher because the incoming temperature is high, the cooling speed is fast, and the humidity of the goods is high, it is not suitable to use a cooler with a fin spacing of 4mm or 4.5mm, and a cooler with a fin spacing of 8mm~10mm must be used.

There are also fresh-keeping warehouses similar to the storage of fruits and vegetables such as garlic and apples. The appropriate storage temperature is generally -2 °C. For such fresh-keeping or air-conditioned warehouses with a storage temperature below 0 °C, it is also necessary to use a fin spacing of not less than 8mm. In order to avoid the blockage of the air duct caused by the rapid frosting of the air cooler, the power consumption will increase.

For more information on evaporators, click the link below: Custom Evaporator Coils.

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How To Choose The Right Evaporator?
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