When we buy an air conditioner, we mostly look at the brand, price, performance, etc. Few people really study the other parameters of the air conditioner. I have told you about the issue of air conditioner refrigerants before, and what kind of refrigeration will be used in the air conditioner. Agent, I will talk about it in detail with you today, and I hope it will be helpful to you.
Refrigerants are also called refrigerants, refrigerants, and the principle of air-conditioning refrigerants has been told many times before. The refrigerant changes from a gaseous state to a liquid state under the action of the condenser, and realizes the process from heat absorption to heat release to reduce or improve the indoor temperature. temperature.
There are also many types of refrigerants used in air conditioners, just as there are many types of other products. The most commonly used household air conditioners are nothing more than R22, R32, R290, and R410a. You may have heard a lot of Freon, which is R22 refrigerant in refrigerants.
R22 refrigerant has been used for a long time. At present, with the development of science and technology and practical innovation, many environmentally friendly new refrigerants are used in air conditioners and other equipment. R22 freon can damage the ozone layer of the earth. Currently, new environmentally friendly refrigerants are used as refrigerants instead.
Among the environmentally friendly refrigerants, R32, R290, and R410a are currently excellent. How to choose these kinds? Refrigerant is not like gasoline, add 95 after 92 is used up, the air conditioner refrigerant model is fixed, if you buy R410a at the beginning, you can only add R410a in the future, if you want to directly replace it with other models, it will directly cause damage to the air conditioner. So when buying an air conditioner, you have to choose the refrigerant you want at the beginning.
R410a is mainly used in inverter air conditioners. 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. It has high cooling and heating efficiency, improves air conditioning performance, and does not damage the ozone layer. In recent years, mainstream air-conditioning companies have used R410A refrigerant to replace R22 in the promotion of inverter air conditioners. Although R410A has zero damage to the ozone layer, its greenhouse gas effect even partially exceeds that of R22. Therefore, R410A is not the ultimate environmentally friendly refrigerant solution for China's air-conditioning industry. At present, the industry unanimously recognizes that the alternative solution to R290 refrigerant is the best, and has been recognized by the government.
Difluoromethane R-32, also known as difluoromethane, is colorless, odorless, non-toxic, low flammability, ozone destruction potential (ODP) is 0, and global warming coefficient (GWP) is 0.11. These advantages make it a substitute for R22 one of the products.
R290, also known as propane, is a natural hydrocarbon refrigerant that can be obtained directly from petroleum crackers. It is a new type of environmentally friendly refrigerant and is mainly used in central air conditioners, heat pump air conditioners, household air conditioners, and other small refrigeration equipment. Compared with Freon, a synthetic refrigerant, the molecule of natural working substance R290 does not contain chlorine atoms, so the ODP value (ozone depletion potential value) is zero, and it has no destructive effect on the ozone layer. In addition, compared with HFC substances that also have no damage to the ozone layer, the GWP value (global warming potential value) of R290 is close to 0 and has no effect on the greenhouse effect. The carbon dioxide emission reduction obtained by using an air conditioner using R290 as a refrigerant is equivalent to the carbon dioxide emitted by a car with a fuel consumption of 10 liters per 100 kilometers driving 6,000 kilometers.
The air conditioners we use now are divided into heating and cooling units and single coolers according to their functions, fixed-speed air conditioners and inverter air conditioners according to their compressors, and split air conditioners and integral air conditioners according to their structures. There are more postures. There is also a lot of news about the explosion of air conditioners. This is because the refrigerant leaks and it will cause an explosion when it comes into contact with an open flame. R410a is added to R125, which is relatively more stable.