The practical characteristics of various cold storage May 15, 2021

FOSHAN KITDOO REFRIGERATION EQUIPMENT CO., LTD designs and builds various cold storages.

1、Constant temperature cold storage

To put it simply, the cold storage needs to meet the requirements for storage of items and achieve a certain range of temperature, and the constant temperature storage must be maintained at that temperature after the temperature reaches the requirements of the items, that is to say, the temperature requirements are relatively high, and the temperature fluctuation is controlled at plus or minus one degree. between.
There are two ways to distinguish between cold storage and constant temperature storage:
The cold storage is just a simple cold storage, if the indoor temperature rises, you can turn on the machine to cool down; this way it will always be kept at 0 degrees. But in addition to the general cooling function, the constant temperature library also needs to prepare the heat function, because the temperature is high for cooling, and the temperature is low for heating, so that the temperature is in a constant temperature state, but its accuracy can be slightly higher, and it is not absolute. of.
The temperature of cold storage is generally below 0℃: common ones are 0℃, -18℃, -28℃ and so on. But there are exceptions, sometimes when it is higher than 0℃, but it is generally not too high; this is one way, the constant temperature library is generally above 5℃, in ten degrees or twenty degrees. Generally, it is mostly because it has a constant temperature, unlike cold storage, which is generally 0 degrees or below.


2、Cold storage warehouse

Use cooling facilities to create a warehouse with suitable humidity and low temperature conditions. Also known as cold storage. It is a place where products are processed and stored. It can get rid of the influence of climate and extend the storage period of various products to adjust market supply.
The temperature of the refrigerator is generally -15℃~-18℃. Generally, the food is gradually put into the cold storage from time to time. After a period of time, the temperature of the cold storage reaches -18℃, and the pick-up is also irregular and irregular. There is no specific requirement for this "period", which is a typical cold storage.
For example, meat and aquatic products have higher requirements for storage temperature to keep the internals from deteriorating. In addition, they should be removed and stored irregularly during the selling process. Generally, the cold storage in large supermarkets is a cold storage.


The storage temperature of the freezer is generally -22~-25. It uses various refrigeration equipment, that is, artificial refrigeration, to keep the room at a certain low temperature. Many foods such as ice cream, seafood, etc. need to be stored at -25°C in order to not deteriorate. For example, if ice cream does not reach -25°C when stored, its fragrance will be lost, and the umami taste and taste of seafood will be much worse.
Features of the freezer warehouse:
Gradually put the food in the cold storage from time to time. After a period of time, the temperature of the cold storage reaches -25℃. There are no special cold storage design process and technical requirements for this period. There are strict requirements on the storage temperature of this cold storage. Between -22°C and -25°C, this is a typical low-temperature storage. Compared with the fresh-keeping warehouse, the frozen storage has a very different mechanism of action. Too low temperature will cause the death of foods such as meat and seafood, and the freshness will be greatly affected. Therefore, for the storage of fruits, vegetables and meat, It is not that the lower the temperature, the better.


4、the fresh-keeping warehouse

The storage temperature of the fresh-keeping warehouse is generally 0℃~5℃, which is mainly used to keep fresh, that is, to keep the original quality and freshness of the agricultural products for a long time to the greatest extent. The living products of the agricultural products should not die as much as possible. The cells are in the process of cold storage. In a dormant state, it reduces nutrient loss and maintains the quality of freshness.
This is generally applied to fruits and vegetables. The current fruit and vegetable industry is planted intensively. In the process of transportation and sale, it is inevitable to use cold storage to maintain the nutrients that the fruits and vegetables should have.
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