What is the cooling method of car air conditioning?

[RobertDella]

Car air conditioning is cooled by starting the vehicle, turning on the fan, pressing the AC button, and adjusting the left knob to the blue position. The car air conditioning system consists of a compressor, condenser, receiver-drier, expansion valve, evaporator, and blower, with each component connected by copper or aluminum pipes and high-pressure rubber hoses to form a sealed system. When the refrigeration system is operating, the refrigerant circulates in different states within this sealed system. The working principle of car air conditioning refrigeration is: 1. Compressing the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant through the compressor; 2. Transforming it into high-pressure and medium-temperature liquid refrigerant through the condenser; 3. The expansion valve turns the high-pressure and medium-temperature liquid refrigerant into low-temperature and low-pressure liquid; 4. It is then vaporized into a gaseous state through the evaporator.