不锈钢纤维丝径对多孔表面池沸腾换热性能的影响  

Heat Transfer on Porous Metal Fibers Surface with Different Porosity and Thickness

作　　者：支浩[1] 朱纪磊[1] 王建忠[1] 敖庆波[1] 马军[1] 李爱军[1] 许忠国[1] 

机构地区：[1]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《热加工工艺》2014年第18期82-84,共3页Hot Working Technology

基　　金：青年科学基金项目(51201139);陕西省科技统筹创新工程计划项目(2011KTCQ01-32)

摘　　要：以85%和90%两种孔隙度的不锈钢纤维多孔表面为研究对象,针对8、12、20、28μm的4种不同丝径样品的池沸腾传热性能进行分析。结果发现:当测试样品的孔隙度、厚度等参数一致时,不锈钢纤维丝径小于20μm,不锈钢纤维多孔表面的传热性能随丝径的增大而增强。影响纤维多孔表面池沸腾换热的因素很多,因此其传热性能并不是随纤维丝径的增大而增强,当纤维丝径大于20μm,其传热性能呈减弱趋势。The pool boiling heat transfer performance of porous stainless steel fiber surface, with the porosities of 85%and 90% and the fiber diameters of 8 μm, 12 μm, 20 μm and 28 μm, were investigated. The results show that the heat transfer performance of porous stainless steel fiber surface enhances as the increase of wire diameter. However, there are many factors affecting the pool boiling heat transfer, when the diameter is more than 20 μm. The heat transfer performance of porous stainless steel fiber surface shows the decreasing trends.

关 键 词：纤维多孔表面 池沸腾传热 过热度 热流密度 

分 类 号：TG113.22[金属学及工艺—物理冶金]