变频空调器电子元器件板肋式散热器仿真与优化
Simulation and optimization on plate-fin radiators for electronic components of frequency conversion air conditioners
摘要：
电子元器件散热困难导致变频空调机组运行异常，为解决此问题，采用Fluent对电子元器件板肋式散热器及其周围空气流场的流动和传热特性进行了模拟研究。建立了仿真计算模型，并与实验参数进行了对比，仿真计算误差不超过10.8%。对原型散热器肋片进行了结构模拟研究，结果显示，在低风速散热环境下，单向长肋片板肋式散热器尾端的空气流量小、温度高，散热效果较差。提出了一种新型板肋式散热器形式，采用多段肋片、错向肋片结构，散热效果得到较大提升。原型散热器经优化后，各元器件温度降低2.8～4.6 ℃，优化率约为3.2%～5.5%。
Abstract：
Aiming at solving the problems of abnormal operation of frequency conversion air conditioning units caused by the weak heat dissipation of electronic components, uses Fluent software to simulate the flow and heat transfer characteristics of the plate-fin radiators for electronic components and the surrounding air flow field. Establishes a calculation model, compares with the experimental parameters, and the simulation calculation error is less than 10.8%. Carries out a simulation study on the original plate-fin radiators. The results indicate that the plate-fin radiators with one-way long fin have poor heat dissipation efficiency under the low wind speed, because of the low air flow and high temperature at the end of the radiators. Proposes a new type of plate-fin radiator, which adopts multi-segment fins and staggered fin structure, and the heat dissipation effect is greatly improved.The temperature of each component is reduced by 2.8 to 4.6 ℃ after optimization, and the optimization efficiency is about 3.2% to 5.5%.
Keywords:plate-fin radiator, frequency conversion air conditioner, electronic component, fin, base plate, optimization