How to increase humidity in cold storage with temperatures below zero?

How to increase humidity in cold storage with the temperature first below zero? You can add a little atomization liquid and re-refrigerate it, spray some water to refrigerate it often, increase its humidity, and increase the atomization of that water.

Preferably in the range of 30--40%? And there is only an air conditioner in the cold storage, and a dehumidifier cannot be installed. The air conditioner has a dehumidification function, but it is very weak, and it is definitely not suitable for use in the place you said.

A dehumidifier must be installed, and there is no other good way.

The temperature of the normal temperature storage is (0-30), and the temperature of the cool storage is not higher than (20); The temperature of cold storage is (2-10); Relative humidity of each warehouse.

It should be kept at (45-75)%.

The temperature and humidity control of pharmaceutical cool storage, normal temperature storage and cold storage "Implementation Standards for the Acceptance of Pharmaceutical Wholesale Enterprises (Trial)" stipulates that enterprises have normal temperature storage, cool storage and cold storage suitable for classified storage of drugs and meet the requirements of drug storage. Cool storage temperature 0 20; The temperature of the room temperature is 0 30; The temperature of the cold storage is 2 10 hungry; The relative humidity of each warehouse should be maintained between 45 and 75%.

The temperature and humidity of normal temperature storage, cool storage and cold storage are different, and the specific standards are as follows:

The temperature standard is: 0 20;

The humidity standard is: 45%-75%;

Introduction of the shade library:

In the "Good Practice for Pharmaceutical Operations" (GSP), it is stipulated that "the cool warehouse refers to the location of the warehouse that does not exceed 20 and cannot be directly reached by the sun." That is, the storage warehouse with a temperature of 0 20 and the sun cannot be directly exposed (protected from light) is called a cool warehouse.

Main storage products: storage of raw materials, drugs (traditional Chinese medicine and western medicine);

High temperature cold storage temperature and humidity standards: relative humidity is 90% 95%, temperature is 5 15;

Fresh storage temperature and humidity standards: relative humidity is 80% 95%, temperature is -2 5;

The room temperature warehouse is mainly used to store chocolate, fruits, vegetables, red wine and other products.

Cold storage is a popular name, the above room temperature storage and cool storage are a kind of cold storage, not other types of cold storage temperature requirements.

Quick-freeze storage temperature: -35 -40; It is mainly used for storing tuna, salmon, etc.;

Freezer temperature: -18 -25; It is mainly used for storing pigs, beef, mutton, fish, poultry, etc.;

Ultra-low temperature cold storage: -45 -60; It is used to store dumplings, quick-frozen food, etc.

According to Article 18 of the Detailed Rules for the Implementation of Good Management Standards for Drug Trading:

1. The temperature of the room temperature is 0-30

2. The temperature of the cold storage is not higher than 20;

3. The temperature of the cold storage is 2-10;

4. The relative humidity of each warehouse should be kept at 45-75%.

Pharmaceutical wholesale and retail chain enterprises should meet the above rules according to the storage requirements of the drugs they operate to set up different warehouses, the area (refers to the construction area, the same below) large enterprises should not be less than 1,500 square meters, medium-sized enterprises should not be less than 1,000 square meters, small enterprises should not be less than 500 square meters.

The temperature of the storage is required to be about minus 20 degrees.

Assuming that the warehouse uses a cold fan for circulating refrigeration, and the defrosting is electrically heated defrosting mode, and the low-temperature defrosting cycle is set to once every 4 hours, each time for 25 minutes, when the storage capacity in the warehouse is 50%, the actual temperature rise of the inventory items itself is only about 3 to 5 degrees, which has no impact on the storage quality.

If the temperature rises to 0 degrees, it is because its temperature probe is placed on the heat dissipation fin of the air cooler, which measures the defrosting temperature of the air cooler, and when the temperature is less than 0 degrees, the frost will not melt, so it is normal.

If you want to keep the temperature relatively constant, you can use a variety of methods to solve it.

Method: Shorten the defrosting time appropriately, but pay attention to storing items with high humidity. Set the end temperature of electric defrosting to 8 degrees. After the cold storage is well insulated, try to minimize the number of openings.

The temperature requirement of ultra-low temperature cold storage is minus 30 degrees Celsius to minus 80 degrees Celsius, which is used to store precious seafood, such as tuna.

Advantages of ultra-low temperature cold storage: The advantage of the construction of ultra-low temperature cold storage is that it can avoid the formation of ice crystals between cells, and it can also reduce the appearance of water between cells. Improve the quality of food storage.