Cold store "dry goods" release, fresh your taste buds

Cold storage is a kind of refrigeration equipment

Cold storage is mainly used for constant temperature storage of food, dairy products, meat, aquatic products, poultry, fruits and vegetables, cold drinks, flowers, green plants, tea, etc. Cold storage is actually a kind of low temperature combined air-conditioning equipment. Cold storage (cold storage) is also a kind of refrigeration equipment. Compared with refrigerator, its refrigeration area is much larger, but they have the same refrigeration principle.

Refrigeration principle of cold storage

Generally, refrigerators are mostly cooled by refrigeration mechanism. Liquid (ammonia or Freon) with very low gasification temperature is used as coolant to evaporate under the condition of low pressure and mechanical control, so as to absorb the heat in the storage, so as to achieve the purpose of cooling. A good thermal insulation layout of the cold storage can keep the cooling capacity of the cold storage unit in the cold storage as little as possible to leak out. On the contrary, it is to minimize the heat leakage outside the cold storage to the cold storage, which is also the primary difference between the cold storage and the general house.

The most commonly used is compression refrigerator, which is mainly composed of compressor, condenser, throttle valve and evaporation pipe. According to the way of evaporation tube device, it can be divided into direct cooling and indirect cooling.

Classification of cold storage temperature zone

For a long time, the definition of the scope of application of cold storage has been vague in terms of temperature division and management classification, which to a certain extent affects the development of the industry, customer positioning, functional services and the play of value intelligence.

Cold storage temperature zone:

1. High temperature storehouse (constant temperature storehouse): suitable for storing red wine, chocolate, medicine, seeds, etc. (5-15 ℃).

2. Medium temperature storage (cold storage): suitable for storing frozen food in cold storage (5 ~ - 5 ℃).

3. Low temperature warehouse (freezer): suitable for storing pork, beef, mutton, fish, poultry, etc. (- 18 ~ - 25 ℃).

4. Ultra low temperature warehouse (Deep Freezer Cold Room): suitable for storing dumplings, quick frozen food and quick freezing (- 4 ~ - 60 ℃).

5. Quick freezing storehouse (quick freezing storehouse): suitable for storing tuna, salmon, etc. (- 35 ~ - 40 ℃).

6. Fresh keeping storehouse (controlled atmosphere storehouse): suitable for storing fruits and vegetables (5 ~ - 2 ℃).

Cold storage value

Cold storage can prolong the storage period of food and keep food fresh and fragile. The water content, vitamin C content, hardness, color and weight of the food can meet the storage requirements, so that the agricultural and sideline products can get rid of the influence of climate, extend the preservation period, and obtain economic benefits.