一种新型双梯形百叶窗翅片换热器的性能模拟研究

Simulation study on the performance of a new double trapezoidal louver fin heat exchanger

提出一种新型双梯形百叶窗翅片换热器结构,并对其性能进行了数值模拟研究。结果发现,相对传统矩形换热器,双梯形翅片结构使较多的空气流体冲刷翅片表面,增强空气流体的扰动效果,能够强化传热。同时,双梯形百叶窗翅片进出口压降比矩形百叶窗翅片进出口压降大。综合考虑换热和阻力情况,双梯形换热器性能优于传统矩形换热器。

A new structure of double trapezoidal louver fin heat exchanger was proposed and its performance was numerically simulated.The results show that compared with the traditional rectangular heat exchanger, the double trapezoidal fin structure can make more air fluids wash over the fin surface, enhance the disturbance effect of air fluids, and enhance heat transfer.At the same time,the pressure drop at the inlet and outlet of double trapezoidal louver fin is larger than that at the inlet and outlet of rectangular louver fin.Considering heat transfer and resistance, the performance of double trapezoidal heat exchanger is better than that of traditional rectangular heat exchanger.