What is the working principle of automobile air conditioning heating?

The working principle of automobile air conditioning system is actually the principle of junior high school physics to the liquefaction of exothermic, vaporization of the principle of heat absorption. Details are as follows: heating principle: the engine drive belt drives the compressor operation. Compressor gas refrigerant is compressed into a high-temperature, high-pressure gas refrigerant, and then sent to the condenser (outdoor unit) to dissipate the heat, at room temperature and high pressure into a liquid refrigerant, so the outdoor unit blowing hot air. Refrigeration principle:The refrigerant enters the capillary tube and enters the evaporator (indoor unit). As the refrigerant from the capillary tube to reach the evaporator after a sudden increase in pressure between the air and reduce the liquid refrigerant will be vaporized into a low-temperature gaseous refrigerant, thus absorbing a large amount of heat, the evaporator becomes cold. The fan of the indoor unit blows indoor air from the evaporator, so the cold air is blown from the indoor unit.