What procedures do you need for approval to build a cold storage?

1, construction procedures and permits. For example, the hot certificate of pipeline welding, the building strength review of the upstairs cold storage, the power electrical installation permit, the construction permit and so on;

2. Land use permit;

3. Permission to use ammonia, which is the only procedure required for ammonia refrigeration and refrigeration projects.

Food cold storage can be widely used in food factories, dairy factories, pharmaceutical factories, chemical plants, fruit and vegetable warehouses, poultry and eggs warehouses, hotels, supermarkets, hospitals, blood stations, troops, laboratories and so on. Food cold storage is mainly used for constant temperature storage of food, dairy products, meat, aquatic products, poultry, fruits and vegetables, cold drinks, flowers, green plants, tea, medicines, chemical raw materials and electronic instruments.

Composition of refrigeration equipment:

Refrigerators are generally used in cold storage. Liquid (ammonia or freon) with extremely low gasification temperature is used as coolant, which evaporates under low pressure and mechanical control to absorb the heat in the storage room and achieve the purpose of cooling down.

The most commonly used is the compression refrigerator, which is mainly composed of compressor, condenser, throttle valve and evaporation tube. According to the evaporation tube device, it can be divided into direct cooling and indirect cooling. The direct cooling evaporation pipe is installed in the cold storage. When the liquid refrigerant passes through the evaporation tube, it directly absorbs the heat in the warehouse and cools down.

Indirect cooling means that the air in the warehouse is sucked into the air cooling device by the blower, absorbed by the evaporation tube hovering in the cooling device, and then sent to the warehouse for cooling. The advantages of air cooling mode are rapid cooling, uniform temperature in the warehouse, and harmful gases such as carbon dioxide generated during storage can be taken out of the warehouse.

Refer to the above content: Baidu Encyclopedia-Cold Storage