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The function of the car cooling system is to keep the car within the proper temperature range under all operating conditions. The cooling system of the car is divided into air cooling and water cooling. The air-cooled system that uses air as the cooling medium is called the air-cooled system, and the water-cooled system that uses the cooling liquid as the cooling medium. Usually the water cooling system consists of a water pump, a radiator, a cooling fan, a thermostat, a compensation bucket, an engine block, a water jacket in the cylinder head, and other ancillary devices. Among them, the radiator is responsible for the cooling of circulating water. Its water pipes and heat sinks are mostly made of aluminum, the aluminum water pipes are made of flat shape, and the heat sinks are corrugated, focusing on heat dissipation performance. The installation direction is perpendicular to the direction of air flow. The wind resistance should be small and the cooling efficiency should be high. The coolant flows inside the radiator core and the air passes outside the radiator core. The hot coolant cools by dissipating heat to the air, and the cold air heats up by absorbing the heat given off by the coolant, so the radiator is a heat exchanger.
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