滴状冷凝传热机理的研究 (Ⅰ)传热表面的制备及传热性能实验  

Mechanism of Heat Transfer in Dropwise Condensation( I ) Preparation of Alloy Surfaces andHeat Transfer Measurements

作　　者：宋永吉[1] 张东昌[1] 林纪方[1] 

机构地区：[1]大连理工大学化学工程研究所

出　　处：《化工学报》1990年第6期670-675,共6页CIESC Journal

基　　金：国家自然科学基金资助项目

摘　　要：采用离子注入技术对紫铜表面进行处理,在几种表面上都获得了稳定的滴状冷凝.对各种表面进行了冷凝传热性能实验,并对实验结果进行了分析讨论.The experiments on the mechanism of dropwise condensation were conducted on copper alloy surfaces with steam. These surfaces were processed with ion-implantation technique. The implanted element were N, Ar, He and O. Steady dropwise condensation was obtained for all the surfaces.The results showed that heat transfer efficiency of Cu-N surface was better than the others. Compared with filmwise condensation the heat transfer coefficient of dropwise condensation increased by 15-20 times and heat flux increased by 3-4 times. A discussion on the causes of heat transfer improvement was given.

关 键 词：滴状冷凝 换热 冷凝传热 传热 

分 类 号：TQ021.3[化学工程]