用于电子设备热管理的相变热沉实验研究

Experimental Investigation on PCM-based Heat Sink for Thermal Management of Electronic Equipment

为了探究在不同加热功率下肋片结构对相变热沉性能的影响,本文选择相变材料石蜡,对三种不同的相变热沉结构进行了实验研究。结果表明,不同肋片结构在不同加热功率下表现出完全不同的底面温度变化趋势,中心阀杆和径向肋显著提高了热沉的热性能,同时热沉内部结构的设计需要综合考虑加热功率和临界温度的影响。

In order to study the influence of the fin structure on the performance of the PCM-based heat sink under different heating powers,experiments on three different PCM-based heat sink structures are conducted with paraffin as PCM.The results show that base temperature variation of different fin structures exhibit completely different change trends under different heating powers.The internal stem and radial fins significantly improve the thermal performance of the heat sink.At the same time,the design of the internal structure of the heat sink needs to consider the heating power and critical temperature comprehensively.