Fresh storage, cold storage and quick-freeze storage are three types of cold storage, the difference is as follows:

Fresh storage, cold storage and quick-freeze storage temperature settings are not the same. Specifically:

Quick-frozen storage temperature is -35 ~ 40 ℃;

Fresh storage temperature: -2 ℃ ~ 5 ℃;

Refrigerated storage temperature: -18 ℃ ~ -25 ℃, 4 ℃ ~ 2 ℃;

2. Storage items are not the same

Fresh storage is mainly storage of fruits, vegetables, flowers and other products;

Refrigerated storage Mainly store cooled or frozen products, such as: meat, fish, dairy eggs, etc.;

Quick-freeze storage with the use of cold storage, such as for quick-frozen meat, dumplings, buns and other products, after the quick-freezing process will be transferred to the cold storage storage. Take the storage of durian as an example:

Before the durian is put into the freezer, it is recommended to put the durian into the -60 quick-freezing freezer for quick-freezing within 3 hours, and then put it into the freezer for storage after 1 hour of quick-freezing.

3. Different costs

The cost of different temperatures of the cold storage is different, such as cold storage, fresh storage and quick-freeze storage of the same size. Cost: freezer > refrigerator > fresh storage, because the freezer and refrigerator temperature is low, the power of refrigeration equipment and higher requirements. Therefore, the cost is higher.

Reference:

[1] Can durian be stored in cold storage? What is the freshness temperature, humidity and time? -Universal Refrigeration Official Website

[2]Zhang Guodong - Cold Storage Design and Examples - Chemical Industry Publishing House, 2019:5

[3]China Cold Storage Alliance - 2021 Edition of National Cold Chain Logistics Enterprises Distribution Map