Automobile air conditioning is divided into warm air conditioning and cold air conditioning. Warm air is the hot air directly extracted from the warm air box by the blower. In summer, it is necessary to turn on the cold air for modulation refrigeration and the cold air generated by the air conditioning system for circular refrigeration. If your car is an automatic air control system, you only need to adjust the degree of cold and warm to ensure the conversion of cold and warm air. In modern cars, according to the types of heat sources, automobile heating systems are mainly divided into two types: one is to use engine coolant as the heat source (currently used by most vehicles), and the other is to use fuel as the heat source (used by a few middle and high-class cars). Engine coolant heating system is favored by automobile manufacturers because of its low cost and high heating efficiency. Therefore, although the present automobile technology has undergone earth-shaking changes compared with the past, this traditional heating technology is still in full swing. This kind of warm air system is mostly combined with automobile air conditioning system, so its operation mode is the same as that of refrigeration system, but it needs to be switched by temperature regulating device. The system consists of a small warm air box, a blower, a control device and an air duct. The working principle of the system is that when the engine coolant temperature is high, the coolant flows through the heat exchanger in the heating system (generally called the small heater tank), and the air sent by the blower exchanges heat with the engine coolant, and the air is heated by the blower and sent into the car through various air outlets. The heating system is simple and reliable, and no additional fuel is needed. As long as the engine works, it can produce hot water.
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