In recent years, refrigerated container cold storage facilities have gradually been established, and their related refrigeration technologies have also received much attention. The preservation of frozen food depends on the temperature control of the refrigerated warehouse, refrigeration base, and refrigerated container. As the infrastructure of the cold chain industry, temperature control of cold storage is crucial. Generally speaking, how much temperature should be reasonably controlled for a refrigeration unit?

Generally speaking, when constructing refrigerated container cold storage, it is recommended that the insulation wall thickness of the cold storage should reach 100mm, and the insulation wall thickness of the refrigerated storage should be 120mm; the loading density should be 250kg/m3, the cargo storage rate should be 10, and the ambient temperature should be 35 ℃.

Entry temperature of goods: refrigerated goods 25 ℃, refrigerated goods -35 ℃, specific heat of goods, refrigerated goods 0.77kj/kg ℃, refrigerated goods 0.44kj/kg ℃. The operating time of the compressor is 18 hours per day.

In addition, according to the different refrigeration functions, it can be divided into fresh-keeping storage, quick freezing storage, low-temperature storage, and refrigeration of frozen objects. The specific control measures are as follows:

1. Fresh storage room

The storage temperature is generally between 0 ℃ and 5 ℃. 0 ℃~5 ℃ is mainly used for the preservation of fresh meat, dairy products, fresh eggs, fruits and vegetables, keeping food in a low-temperature environment with a temperature not lower than 0 ℃. In this environment, food can be kept as fresh as possible.

2. Quick freezing warehouse

The storage temperature is generally below -30 ℃. -30 ℃ is mainly used for quick freezing of food, such as frozen meat, frozen dumplings, frozen vegetables, etc. It is required to quickly freeze food within a limited time.

3. Low temperature storage

The storage temperature is generally -22 ℃~-25 ℃~-22 ℃~-25 ℃, mainly used for food storage. When the storage temperature is -22 ℃~-25 ℃. Only at this storage temperature can food not spoil. For example, when the temperature of ice cream exceeds -25 ℃, the taste will disappear. If the temperature of seafood is higher than this temperature, the taste will disappear.

4. Refrigeration of frozen goods

The storage temperature is generally -15 ℃ to -18 ℃ to -15 ℃ to -18 ℃, mainly used for food refrigeration. Regularly store some food in the cold storage and periodically remove other food from the cold storage. There is no specific requirement for the refrigeration time of food, and the storage temperature should be maintained within the range of -15 ℃ to -18 ℃.

The temperature control of refrigerated truck cold storage is crucial and requires everyone's attention. To ensure the preservation of food and meet certain standards.