摘要
实验研究射流冲击泡沫金属的强化传热在电子器件冷却中的作用,分析热流密度、传热面与喷射气流温度差、喷射速度和喷嘴距泡沫金属上表面的高度等因素对传热特性的影响。在泡沫金属材质为铜,孔隙率为0.96,喷嘴宽度为0.5cm的情况下,喷嘴距泡沫金属上表面高度越低和喷射速度越大,泡沫金属的传热效果越明显,冷却效果越显著,并对实验数据,进行最小二乘法拟合,得到相应的拟合方程式。该文的分析结果,可为射流冲击泡沫金属强化传热技术的应用提供一定指导和借鉴。
This paper experimentally investigated the convective heat transfer and electronic device cooling in the metallic foam block with a confined slot air jet. Copper foam block with the porosity of 0.96 and the nozzle width of 0.5cm was used. Variable parameters were the heat flux（q） , the temperature difference between heat transfer surface and jet air（ IT）, the jet ve- locity （v） and the height of nozzle -to- foam tip（H）. Experimental results reveal that the more heat could be transferred with the height of nozzle - to - foam tip decreased and the jet velocity increased. Besides, the least - squares fitting method was used in forming the curve of experiment data. All these results in this paper can be supplied for the application of jet impact metal foam of heat transfer technology.
作者
李林星
陈威
王俊卿
祝啸
Li Linxing Chen Wei Wang Junqing Zhu Xiao(Merchant Marine College, Shanghai Maritime University, Shanghai 201306,China)
出处
《低温与超导》
CAS
北大核心
2016年第9期60-65,共6页
Cryogenics and Superconductivity
基金
国家自然科学基金项目"含湿多孔蒸发制冷墙体分层传热及界面迁移机理研究"(51276107)资助
关键词
射流冲击
泡沫金属
电子器件冷却
实验研究
Impinging jet
Metal foam
Electronic device cooling
Experimental study
