Heating system:
The warm air only uses the thermal cycle in the car, and there is no need to start the air compressor at all. You only need to adjust the temperature button to turn on the warm air without turning on the AC switch.
Refrigeration system:
Automobile air conditioning refrigeration is controlled by AC switch on the air conditioning control panel. When the air conditioner is turned on, the AC switch is turned on, the electromagnetic clutch of the compressor is engaged, and the compressor starts to work. The compressor compresses the refrigerant into high-temperature and high-pressure gas, then radiates heat to the air in the condenser in front of the vehicle, then condenses into high-pressure liquid, passes through the accumulator, filters and dries, reaches the expansion valve, throttles and depressurizes to become low-pressure liquid, and finally reaches the evaporator in the vehicle room to evaporate and absorb heat, thus realizing refrigeration.
Million car purchase subsidy