基于微热管的小型电子设备自然对流换热的试验研究  

Experimental study on natural convection heat transfer of small electronic equipment based on micro heat pipe

作　　者：战乃岩[1] 吴思洁 柴宇惟 李晓莉 苗盼 苏增强 ZHAN Nai-yan;WU Si-jie;CHAI Yu-wei;LI Xiao-li;MIAO Pan;SU Zeng-qiang

机构地区：[1]吉林建筑大学应急科学与工程学院,吉林长春130118

出　　处：《节能》2022年第3期36-39,共4页Energy Conservation

基　　金：国家自然科学基金项目(项目编号:51206061);吉林省自然科学基金项目(项目编号:20180101320JC)。

摘　　要：对比传统散热方式,微热管体积小、形状多变,且传热效率高,可在小空间强化自然对流传热中得以充分发挥。研究在封闭腔体内自然对流传热的基础上,通过试验对比纯空气自然对流(工况Ⅰ)、加入铝管(工况Ⅱ)和加入微热管(工况Ⅲ) 3种散热方式,得出工况Ⅲ散热效果最佳。采用微热管对热源进行散热后,对流换热随着热源功率的增加而强烈,腔内空气温度与腔顶平均热流密度随着热源间距的增加而减少,热量更多地从微热管中传递扩散。Compared with traditional heat dissipation methods, micro heat pipe has small volume, variable shape and high heat transfer efficiency, which can be fully utilized in strengthening natural convection heat transfer in small space. In the paper, based on the study of natural convection heat transfer in the closed chamber, three heat dissipation modes are compared through experiments: natural convection of pure air(working condition Ⅰ), adding aluminum pipe(working condition Ⅱ) and adding micro heat pipe(working condition Ⅲ). It is concluded that working condition Ⅲ has the best heat dissipation. After the micro heat pipe is used to dissipate the heat source, the convective heat transfer is strong with the increase of heat source power. The air temperature in the cavity and the average heat flux density at the top of the cavity decrease with the increase of heat source spacing, and more heat is transferred and diffused from the micro heat pipe.

关 键 词：微热管 电子设备 自然对流 激光干涉 烟可视化 

分 类 号：TK124[动力工程及工程热物理—工程热物理]