Do you really understand the knowledge of Freon refrigerant

Do you really understand the knowledge of Freon refrigerant

The scientific name of Freon refrigerant is halocarbon refrigerant, also known as halocarbon Refrigerant charging pipe, which is the general term for the halogen derivatives of saturated hydrocarbons. It appeared in the 1930s with the development of the chemical industry. A type of refrigerant, its emergence has solved the refrigeration and air conditioning industry's search for refrigerants. From the definition of Freon, it can be seen that the non-Freon R134a, R410a and R407C are actually all Freon.

The Freon refrigerants used in the refrigeration and air-conditioning industry in China are R11, R12, R22, R32, R113, R114, R115, R123, R125, R134a, R143a, R141b, R142b, R152, R404a (44% of R125 and 52% R143a and 4% of 134a), R407C (23% of R32 and 25% of R125 and 52% of R134a), R410a (50% of R32 and 50% of R125), R500 (73.8% of R12 and 26.2% of R152) ), R502 (48.8% of R22 and 51.2% of R115), etc.

Freon can destroy the ozone layer because of the presence of Cl in the refrigerant, and as the amount of Cl increases, its ability to destroy the ozone layer increases, and with the increase of H element content, its ability to destroy the ozone layer decreases; the greenhouse effect is mainly caused by Because the refrigerant generates a lot of greenhouse gases, such as CO2, in the process of slow oxidation and decomposition. According to the structure of Freon refrigerant, it can be roughly divided into the following three categories:

  The first category is chlorofluorocarbons: mainly including R11, R12, R113, R114, R115, R500, R502, etc., due to their great damage to the ozone layer, they are listed as a class of controlled substances by the Montreal Protocol. The use of such substances is currently banned. In the process of making polyurethane sponges, R11 has been replaced by R141b as a transitional substitute.