How Does a Car's Air Conditioning System Work?

[ClaireLynn]

The operation method of a car's air conditioning system is as follows: 1. When the compressor is working, it sucks in low-temperature and low-pressure gaseous refrigerant from the evaporator. After compression, the temperature and pressure of the refrigerant increase, and it is then sent to the condenser. 2. Inside the condenser, the high-temperature and high-pressure gaseous refrigerant transfers heat to the outside air passing through the condenser and liquefies, turning into a liquid. 3. The liquid refrigerant enters the expansion valve, where its temperature and pressure decrease before flowing into the evaporator. At this point, the boiling point of the refrigerant is much lower than the temperature inside the evaporator, causing the liquid refrigerant to evaporate into gas. 4. During the evaporation process, it absorbs a large amount of heat from the surroundings, and then the low-temperature and low-pressure refrigerant vapor re-enters the compressor. This process repeats continuously to achieve the purpose of lowering the temperature of the air around the evaporator.