200 tons of seafood cold storage refrigerant use precautions

The physical and chemical properties of various refrigerants vary, and there are different packs and pressures at different temperatures. At normal temperature, there is high pressure and low pressure. Generally, the refrigerants are stored in special steel cylinders. The cylinders used must be pressure tested regularly. For example, the cylinders that store ammonia are pre-tested at 60 atmospheres (gauge pressure) to store different refrigerants. The cylinders are also tested for different pressures, and the cylinders are painted in different colors to show the difference (ammonia bottle yellow, fluorine bottle silver gray), and indicate the abbreviation code and name to prevent misuse.

Cylinders storing different refrigerants cannot be exchanged for each other. The cylinders storing the refrigerant should not be exposed to the sun or near flames and high temperatures. Prevent cylinders from colliding with each other during transportation to avoid the risk of explosion. The control valve on the cylinder is usually protected by a cap or iron cover. After use, care should be taken to reinstall the removed cap or iron cover to prevent the control valve from being damaged by impact during handling.

When the refrigerant in the cylinder is used up, immediately close the control valve and put on the cap to avoid leakage of air or moisture. The refrigerant should avoid touching the skin and not touch the eyes. When it is found that there is a large amount of leakage of the refrigerant, the door and window must be opened, otherwise it will cause suffocation. When the refrigerant is pumped out of the system into the cylinder, the cylinder should be sufficiently cooled, and the refrigerant can only account for about 60% of the cylinder volume, so that it has a certain room for expansion at room temperature.