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

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.