What is the working principle of automobile air conditioning heating?

The working principle of automobile air conditioning heating is that when heating, the high-temperature coolant in the engine will flow through the warm water tank, and the wind from the blower will also pass through the warm water tank, so that the air outlet of the automobile air conditioning system will blow out warm air.

Cars have two heating functions. One is engine coolant, which is currently used by most vehicles. Second, it mainly focuses on automobile fuel consumption, which is commonly used in mid-to high-end cars. The heating capacity of automobile air conditioner is not obtained by the air conditioning system itself, but the heat energy generated by engine coolant. When the engine is running, it will generate a lot of heat energy, which is absorbed by the coolant to cool the engine. As the carrier of heat, the cooling liquid passes through the engine radiator and realizes air-air convection under the action of the fan. Heat energy is released in the empty room of the carriage and heating is started. After the heat energy of the coolant is released, it is cooled, and the heat energy of the engine is absorbed to form a cycle, thus achieving the purpose of heating.

Automobile air conditioning is a relatively large system in automobile. In addition to the compressor, there are evaporator, expansion valve, liquid storage dryer, condenser and other components. In the whole system, the compressor plays the role of compressing and driving the refrigerant. Driven by the engine, the low-temperature and low-pressure refrigerant vapor generated by endothermic vaporization in the evaporator is continuously inhaled, compressed to form high-temperature and high-pressure refrigerant vapor, and discharged into the condenser, creating high-pressure conditions for the continuous condensation and heat release of refrigerant in the condenser. At the same time, it overcomes the circulating flow resistance of refrigerant in the refrigeration circuit.

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