What is the principle of car air conditioning warm air? Who knows?

1, waste heat heating system

Automobile air conditioning waste heat heating system, mainly the use of engine cooling circulating water waste heat or engine exhaust waste heat as a heat source, and the introduction of the heat exchanger, by the fan will be inside the car or outside the air blown through the heat exchanger and make it warm.

The waste heat heating system is divided into two types: water heating type and air heating type. Water heating heating system is the use of engine coolant heat, this form is used for cars, trucks and heating requirements are not high on the bus; gas heating heating system is the use of engine exhaust system heat, this form is used for the installation of air-cooled engine car.

Since the cooling system of automobile engine on the market is mainly water-cooled system, the following is mainly on the water heating system to do a detailed explanation.

Water-heated heating system warm air is generally water-cooled engine cooling system in the coolant as a heat source, the coolant will be introduced into the heat exchanger in the cabin, so that the blower to send the air inside the cabin or outside the air and the coolant in the heat exchanger for heat exchange, the blower will be heated air into the cabin.

The water from the cylinder head has two directions, one is the thermostat closed coolant for small circulation, hot water through the water jacket flow into the warm air device, and then back to the engine directly through the water pump back to the interior; the second is the thermostat to open the coolant for large circulation, the water through the radiator and then back to the engine. The big cycle of the coolant is controlled by the thermostat, and the small cycle is always carried out, so the warm air water is not controlled, always flowing. If you can't use the warm air you can use the hot water valve to block the warm air hose from flowing, which has no effect on the body.

2, independent heating system

Independent heating system is burning gasoline, kerosene or diesel fuel in the burner, the heat generated by the heating air or water, transported to the cabin to raise its temperature, the combustion of the gas in the heat exchange is discharged out of the car, the air inside the car is not polluted.

Independent heating system is also divided into independent gas heating system and independent water heating system.

Independent heating system is mainly used for large luxury coaches, buses and cars used in cold areas, often using independent water heating system.