R407C在花瓣型翅片管与低肋管外的冷凝传热性能对比  

Comparison on Condensation Heat Transfer Performance of R407C Outside Petal-Shaped Finned Tube With Low Finned Tube

作　　者：秦朋[1] 凌子夜[1] 徐涛[1] 张正国[1] 叶卓成 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广州510640

出　　处：《工程热物理学报》2013年第12期2347-2350,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51106053);国家自然科学基金-广东省联合基金资助项目(No.U0934005);广东省教育厅科研项目(No.2012CXZD0011)

摘　　要：在蒸汽饱和温度为39℃，壁面过冷度为3—9℃条件下，实验研究了R407C在水平花瓣型翅片管和低肋管外的冷凝传热性能。结果表明，管外冷凝传热系数均随着壁面过冷度的增加而增大，在相同壁面过冷度下，花瓣型翅片管的管外冷凝传热系数是光滑管的4．6—5．4倍，比低肋提高了15％-25％，证明花瓣型翅片管具有良好的强化非共沸混合工质冷凝传热性能。Condensation heat transfer coefficients （HTCs） of zeotropic refrigerant mixture R407C on single horizontal petal shaped finned （PF） tube and low finned tube were experimentally measured. All measurements were taken at the vapor temperature 39℃ with the wall subcooling of 3-9℃. The results showed that the enhancement factor provided by the petal-shaped finned tube was 4.6-5.4, the outside condensation HTCs of petal-shaped finned tube was about 1.15-1.25 times as large as that of low finned tube at the same wall subcooling. It is a promising route to use petal-shaped finned tube instead of low finned tube for improving the performance of condensation heat transfer of nonazeotropic mixture.

关 键 词：R407C 花瓣型翅片管 低肋管 冷凝传热. 

分 类 号：TK124[动力工程及工程热物理—工程热物理]