Analysis and improvement of vehicle water radiator

 

Analysis and improvement of vehicle water radiator, whether it is to reduce the number of water pipe rows in the thickness direction of the radiator core or reduce the geometric size of the water pipes, the result will cause a reduction in the heat dissipation area, which will obviously affect the heat dissipation of the entire radiator performance. In order to make up for the loss of performance due to the reduction of heat dissipation area, the most effective method is to develop high-efficiency heat sinks. The louver-shaped zigzag heat sink is a high-efficiency heat-dissipating element, which is the result of increasing the local heat release coefficient after developing a cut on the heat transfer surface in the direction of the air flow. Polhausen explained the basic way to improve the heat dissipation coefficient of the notched heat sink, and applied this theory to various notches formed at intervals. According to sand, if the fluid velocity and physical parameters are the same, the heat release coefficient is inversely proportional to the cut spacing.

Japanese car water radiator adopts high-efficiency louvered heat dissipation belt. Under the premise of increasing the heat release coefficient by %, the number of water pipes is reduced by half, the volume of the core body is reduced by 50%, and the weight of the whole machine is also reduced, which fully demonstrates the high efficiency. The role of heat dissipation components. Russia widely uses cold-rolled finned tubes as heat exchange elements, which also solves the high-performance problem of heat exchangers on vehicles and ships.

When designing a car water radiator, it is necessary to try to overcome the current mismatch between the heat dissipation capacity of the water radiator belt and the weight of the water radiator. The development of high-efficiency air-side cooling components is the core and foundation of the development of high-performance, high-compact, lightweight vehicle water radiators, and it is also an effective way to develop a new generation of water radiators for main battle tanks.

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