梯密度金属泡沫池沸腾换热性能的实验研究  

Experimental Investigation on Pool Boiling Heat Transfer of Gradient Metal Foams

作　　者：徐治国[1] 赵长颖[1] 赵耀[1] 

机构地区：[1]上海交通大学工程热物理研究所,上海200240

出　　处：《工程热物理学报》2015年第10期2240-2244,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51576126);国家重点基础研究"973"计划(No.2013CB228303)

摘　　要：本文实验研究了去离子水中梯密度通孔金属泡沫的池沸腾换热性能。梯密度金属泡沫材质为铜和镍,孔隙率为0.98,泡沫厚度为4~14 mm。实验结果表明,相比于单层泡沫,梯密度金属泡沫显著的增强了沸腾换热能力,但增强程度受孔密度变化梯度、泡沫厚度和材料的影响;往去离子水中加入表面活性剂十二烷基硫酸钠（SDS）能明显的改变梯密度金属泡沫的池沸腾换热性能。Pool boiling heat transfer performances of gradient metal foams have been experimentally investigated in saturated deionized water.Foam materials are copper and nickel,foam porosity is0.98,and foam thickness are from 4 mm to 14 mm.The experimental results indicate that,compared with single-layer foams,gradient metal foams significantly enhance pool boiling heat transfer,but the enhancement degree is affected by pore density gradient,foam thickness and material;Adding the surfactant SDS into water remarkably changes pool boiling heat transfer of gradient metal foams.

关 键 词：梯密度金属泡沫 池沸腾 材料 表面活性剂 孔密度 

分 类 号：TK124[动力工程及工程热物理—工程热物理]