But due to its damaging effect on ozone, it has been banned in phases starting from 1994.
Freon (Freon-11, Freon-12, Freon-13, Freon-21, Freon-22, Freon-113, etc.)Įarlier, the R-12 (also sold under the brand name Freon-12) was used as the main refrigerant in automobiles and household refrigeration. Based on these and several other properties, some of the popular and industry approved refrigerants are: There are many other properties that a refrigerant must have (there are some requirements even at the molecular level). It should be easy to liquify or vaporize and also moderate its pressure and temperature. It should have a large latent heat value. It shouldn’t be hazardous and must be safe and non-toxic. It should be non-corrosive to metals and must mix well with oils. It should not be explosive or flammable. It is important for the refrigerant to have certain properties such as: To expel all the heat absorbed by the refrigerant, it is condensed from gas to liquid at high temperature and pressure. During this phase, the refrigerant is converted from liquid to gas. At a low temperature and pressure, the refrigerant absorbs heat. It is clear that the main component that helps in cooling your cabin is the refrigerant. During this process, it absorbs heat and humidity from the car’s cabin and provides with cool and dry air.Īll the components i.e., the compressor, condenser, accumulator (or receiver drier) and evaporator work in harmony to give you with cool air. 
Refrigerators and Air Conditioners are the perfect examples of this system.Ī special fluid called Refrigerant is used in refrigerators and air conditioners that helps in transfer of heat by continuously cycling between high high-pressure liquid state and a low-pressure gas state. The unwanted heat is mechanically transferred to an external area where the heat is unobjectionable.
The process of removing heat from an area or location is called as Refrigeration. Let us first see a very basic overview of how the air conditioning system in your car works. Low Side Pressure and High Side Pressure.
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