The lower the cold storage temperature, the better is a misunderstanding

The lower the cold storage temperature, the better is a misunderstanding

Most professional refrigeration professionals believe that the lower the temperature the cold storage is built, the better, and the shelf life of ice storage can be extended. Experts say this is actually a misunderstanding.

　　 Low-temperature cold storage is also called freezing storage or freezing cold storage. Generally, the temperature of the storage is around -20°C~-30°C, and the food is frozen through air coolers or special freezing devices. The temperature of quick-freezing cold storage is below -20°C, and seafood and cold drinks need to be below -20°C to not deteriorate. The feature of low-temperature cold storage is to gradually put the instrument into the cold storage from time to time. After a period of time, the temperature of the cold storage reaches -20°C. It is a typical low-temperature cold storage between -18°C and -23°C, but the storage contains dairy products. For cold drinks, the storage temperature should be set at -20°C～-28°C, but these two different temperatures require large-scale cold storages of different levels, and there is a big gap in equipment investment.

Most professional refrigeration professionals believe that the lower the temperature the cold storage is built, the better, and the shelf life of ice storage can be extended, but experts say: Sometimes it should be based on the storage temperature required for various items, such as fruits and vegetables, storage at too low a temperature Temperature is easy to cause frostbite, and low temperature of meat products can be stored for a long time.

Considering from the economic and energy point of view, the low-temperature cold storage storage temperature should be selected based on the long storage time. For example, meat can be stored at -18°C for 4-6 months, and at -23°C it can be stored for 8-12 Since meat will be in the hands of consumers within 5 months, it is sometimes considered whether to choose a storage temperature of -23°C. Therefore, the design of low-temperature cold storage must depend on the product life cycle of the object and its effective storage environment To choose the appropriate storage temperature.