Air conditioning refrigerant introduction

Air-conditioning refrigerant is the carrier of heat transportation in the air-conditioning refrigeration system. It is called the "blood" of air-conditioning. With the popularity of air-conditioning, almost every family has several air-conditioners, but the air-conditioning often does not cool or heat This phenomenon makes many people distressed. This is generally caused by the lack of refrigerants, which require fluoride. Below, Wula Mall will introduce you to the relevant knowledge of air-conditioning refrigerants.

What is air conditioning refrigerant

The refrigerant is the heat-carrying medium of the air-conditioning refrigeration cycle, which achieves the purpose of refrigeration by absorbing heat when vaporized in the evaporator and releasing heat when condensed in the condenser. There are currently more than 80 substances that can be used as refrigerants, the most commonly used are ammonia, freons, water and a few hydrocarbons.

At present, the main refrigerants used in household air conditioners are R22, R410A, R32 and R290, among which R22 and R410A are the main refrigerants. R22 is currently the most widely used air-conditioning refrigerant in China. Due to its serious damage to atmospheric ozone, production will be stopped by 2020 and will be phased out. The new environmentally-friendly refrigerant R410A has no destructive effect on ozone and meets environmental protection standards. Mainstream air-conditioning manufacturers are promoting R410a refrigerant air-conditioning. Domestic companies such as Midea, Gree, Chigo, Chunlan, Haier, Hisense, Galanz, Aokeron, and Cox, etc. International brands such as Daikin, Panasonic, Trane, LG, Hyundai, etc.

Air conditioning refrigerant operation principle

When the air conditioner is refrigerated, the refrigerant gas is compressed into a high temperature and high pressure refrigerant liquid after being sucked by the compressor, and then passes through the condenser to release heat in the outdoor heat exchanger, and becomes a medium temperature and high pressure liquid (the heat is taken away by the outdoor circulating air ), and then through capillary expansion and decompression, it becomes a low-temperature and low-pressure liquid, and then enters the evaporator (indoor unit copper pipe) to absorb heat and evaporate and become a low-temperature and low-pressure gas (indoor air passes through the surface of the heat exchanger to be cooled and cooled to achieve The purpose of indoor temperature drop), and finally sucked by the compressor again, and so on.

In general, the operating principle of air-conditioning refrigerant is to keep doing the following cycle: compression-condensation-expansion-evaporation.

How often do you add air conditioning refrigerant

Many people think that air-conditioning Freon needs to be added every year, which is wrong. The air-tight central air conditioner will not lose a little Freon for a few years, and the cooling effect is still very good. Therefore, you do not need to add Freon. It is only necessary to add fluoride when the machine starts to show poor cooling effect. There is no saying that Freon is added once a year.