制冷剂在微尺度槽道内的流动与传热研究  

Study on Friction and Heat Transferof the Flow of CFC-12 in Micro-channels

作　　者：姜明健[1] 孙晗[1] 

机构地区：[1]北京工业大学热能工程学系

出　　处：《北京工业大学学报》1998年第1期55-59,共5页Journal of Beijing University of Technology

基　　金：北京市自然科学基金

摘　　要：就微三角形槽道内ＣＦＣ１２的流动沸腾换热做了详细的实验研究。研究表明，在微槽道中流体流动沸腾换热比常规尺寸的换热更为强烈，且流动用力相对要小，实验观察发现，在微三角形槽内流体流动沸腾时明显有大量气泡生成，这与其它相关实验得出的不产生气泡的结论是不同的。The friction factors and heat transfer characteristics of the flow of CFC-12 in micro triangular channels are studied. The experimental results show that the heat transfer in micro-channels is greater than that in normal scale channels, and the friction factors are smaller than that in normal channels. Most importantly,lots of bubbles are seen while CFC-12 boiling in the micro channels upon our experiments,which is different from the result got by others so far. It is explaied in this paper.

关 键 词：微尺度槽道 流动沸腾 CFC12 制冷剂 传热 

分 类 号：TB64[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]