摘要
本文研究了花瓣形翅片管（ＰＦ管）在水平套管之环形通道内强制对流冷凝的传热性能及传热强化机理．实验结果表明：Ｒ１１３在ＰＦ管外的冷凝给热系数是光滑管的１１～１８倍，通过分析实验结果及观察实验现象得知：由于ＰＦ管具有特珠的翅片结构，既能充分发挥冷凝液的表面张力作用，又能干扰气液两相流的流态，增加边界层的湍流，因而对强化套管环隙间冷凝具有明显效果。
In this paper, the heat transfer performance of foed convective Condensation and the heat transfer enhancement mechanism on the petal shaped fin tube (PF tube) are studied. R113 is used as working fluid flowing in the annular space of the horizontal coaxial double pipes and condensing on the PF tube. The experiment results show that the mean condensation heat transfer coefficient on PF tube was 11￣ 18 times as large as that for smooth tube. It is found that by analysing the experiment results and observed e...
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
1996年第2期1-6,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金
霍英东青年教师基金
关键词
膜状冷凝
水平环隙
花瓣形翅片管
s: film condensation
horizontal annulus
petal shaped fin tube
