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Analysis on the Composition and Working Principle of Automobile Heat Dissipation System

Back to list Release date: Sep 27, 2018

        With the rapid development of science and technology, the cooling fans on cars are also developing rapidly. Therefore, it is very important to solve this problem and choose and use it properly.


        In order to prevent the car from overheating, the parts around the combustion ( cylinder liner, cylinder head, valve etc.) must be properly cooled. The automobile cooling system consists of radiator, thermostat, water pump, cylinder channel, cylinder head channel, fan, etc. The radiator is responsible for the cooling of circulating water.Its water pipes and fins are made of aluminum.The aluminum pipes are made of flat shape and the fins are corrugated to face up to the heat dissipation performance.The installation guideline is perpendicular to the guideline of air activities, so that the wind resistance should be small and the cooling efficiency should be high as far as possible.


        Coolant is inside the radiator core and air passes outside the radiator core. The hot cooling liquid is cooled by radiating heat to the air, while the cold air is heated by the heat radiated from the cooling liquid, so the radiator is a heat exchanger.


        The radiator is the main part of the cooling system to protect the engine from damage caused by overheating. The principle of the radiator is to use cold air to reduce the temperature of coolant from the engine in the radiator. The radiator has two main components, a radiator plate composed of small flat tubes, and overflow tanks ( on the upper, bottom, or both sides of the radiator plate ). The radiator also serves as a water storage and heat dissipation function.An air vapor valve is arranged on the car radiator cover and has a common air hole to communicate with the atmosphere. When the water temperature rises, the cooling water in the radiator of the car expands and the pressure of the generated steam rises, and the steam valve is blown away. When the water temperature drops, the pressure drops and the air valve opens, and outside air will enter the radiator from this common air hole, thus ensuring that the pressure in the radiator will not change.


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