基于微细通道热沉的热电制冷散热系统实验研究  

Experimental study on thermoelectric cooling system based on mini-channel heat sink

作　　者：张建波[1] 徐向阳[1] 屈佐明 孔令剑[2] 马挺[2] 

机构地区：[1]中国空间技术研究院西安分院,西安710000 [2]西安交通大学热流科学与工程教育部重点实验室,西安710049

出　　处：《中国科技论文》2017年第11期1230-1234,共5页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20130201120061);国家自然科学基金资助项目(51676155)

摘　　要：为提高电子器件冷却系统散热效率,本文搭建了以微细通道热沉、热电制冷器、风扇散热器为核心的散热系统,研究了热电制冷器输入电流对制冷温度、制冷模式的影响以及循环水流量对系统性能的影响。实验结果表明:随着热电制冷器输入电流的增加,热源平衡温度呈现先减小后上升的趋势;热电制冷器的热传导方向随着电流的增加发生改变,当电流小于4A时为热电主动冷却模式,热传导对制冷效果具有促进作用,而当电流大于4A时为热电制冷模式,热传导对制冷效果具有抑制作用;增大循环水流量可以提高制冷效果,但是当流量大于60L/h时,热源降温幅度不再随着流量增大而显著减小。A cooling system including mini-channel heat sink,thermoelectric cooler（TEC）and fan radiator was established.The effects of input current of TEC on the cooling temperature and modes as well as the effect of water flowrate were investigated.The results indicate that with the increase of input current of TEC,the steady temperature of heat source decreases at first and then increases.The heat conduction direction of TEC changes with the variation of input current.When the input current is smaller than 4A,the TEC worked in the thermoelectric active cooler modes and the heat conduction has a positive effect on the cooling performance.But when the input current is greater than 4A,the TEC worked in the thermoelectric refrigerator modes and heat conduction has a negative effect on the cooling performance.Increasing the mass flowrate of water can improve the cooling performance.However,when the flowrate of water is greater than 60L/h,the cooling rate of heat source is no longer significantly decreased with the increase of flow rate.

关 键 词：热电制冷 传热 瞬态响应 热传导 微细通道热沉 

分 类 号：TK172[动力工程及工程热物理—热能工程]