Air conditioning snow generally refers to air conditioning refrigerant. Refrigerant, also known as refrigerant, is the working medium of refrigeration cycle, which is used for heat transfer and heat release when condensed in condenser. At present, there are more than 80 kinds of refrigerants, among which freon and a few hydrocarbons are the most commonly used.
How many kinds of air-conditioned snow are there?
Common snow types: R22, R- 134a, R290, R4 10A. R22 is a single refrigerant, commonly known as freon, which will destroy the ozone layer and cause environmental problems. Not environmentally friendly, it is rarely used now. R- 134a is tetrafluoroethane, which is the mainstream snow type and is used for heat pumps. R290 is a new type of environmental protection snow, which is unsafe, flammable and explosive when exposed to open fire, and prone to accidents. It is used as a temperature-sensitive working medium. R4 10A is also a new type of environment-friendly refrigerant with excellent performance. It is a widely used snow species, but choose environmentally friendly refrigerant when using it. It should be noted that R22 snow species is poor in environmental protection, and leakage will damage the environment.
What is air-conditioned snow?
Air conditioning snow species refers to a common refrigerant in daily life, which is a common name. Air conditioning snow is also called air conditioning portable refrigerant. This concept was founded by Evans in 1805. It puts forward the idea that volatile fluid can be used in closed circulation, which is simply to freeze water at room temperature into ice. Through its theory, ether can be evaporated in a vacuum environment, steam can be pumped into a water-cooled heat exchanger, and ether can be used after condensation. 1834, the vapor compression refrigeration cycle developed by Perkins was patented.