Comparison of Characteristics of Air Conditioning Refrigerants R22 and R410A

The two most well-known air conditioner refrigerants are R22 and R410A refrigerants. However, because r22 has a certain damaging effect on the ozone layer, it is a transitional refrigerant. The R410A refrigerant derived later is also a widely used refrigerant.

R22 and R410A comparison:

Features of R22: It is a colorless, almost odorless gas at room temperature, non-flammable, non-explosive, non-corrosive, slightly more toxic than R12, but still a safe refrigerant, with a safety classification of A1. Pressurized to liquefy into a colorless and transparent liquid. The chemical stability and thermal stability of R22 are very high, especially in the absence of moisture, it will not react with general metals below 200 °C. Only works slowly with bases in the presence of water. But cracking occurs at high temperatures. R22 is a low temperature refrigerant, which can obtain a refrigeration temperature of -80°C.

R410a is used in inverter air conditioner. It is a new type of environmentally friendly refrigerant that does not destroy the ozone layer. The working pressure is about 1.6 times that of ordinary R22 air conditioners, and the cooling (warming) efficiency is high, which can improve the performance of air conditioners.

Features of R410a: The new refrigerant of R410a consists of two quasi-azeotropic mixtures, R32 and R125, with 50% each. It is mainly composed of hydrogen, fluorine and carbon elements (expressed as hfc), and has the characteristics of stability, non-toxicity and superior performance. At the same time, because it does not contain chlorine, it will not react with ozone, that is, it will not destroy the ozone layer.

In addition, the performance of air conditioners using new refrigerants will also be improved to a certain extent. R410A is the most suitable refrigerant to replace R22 so far internationally recognized, and has been popularized in Europe, America, Japan and other countries. Global trends and prospects of R410A replacement in major international markets, usage status and entry into international markets.