R134a过热蒸汽在三维内微肋管内的凝结换热特性

工程热物理学报 , 2000, 21(4): 483-485.

R134a过热蒸汽在三维内微肋管内的凝结换热特性

陈清华 ^1, , 崔文智 ^2, , 辛明道 ^3, , 周杰 ^4, , 张罡 ^5,

1.重庆大学工程热物理研究所,重庆　400044

2.重庆大学工程热物理研究所,重庆　400044

3.重庆大学工程热物理研究所,重庆　400044

4.重庆大学工程热物理研究所,重庆　400044

5.重庆大学工程热物理研究所,重庆　400044

基金项目: 国家自然科学基金(59676017)

关键词：微肋管 , 过热蒸汽 , 凝结

CONDENSATION OF R134a SUPERHEATED VAPOR IN THREE-DIMENSIONAL MICROFIN TUBE

Keywords： microfin , superheated vapor , condensation

本文对三维内微肋管内进口区段R134a过热蒸汽的凝结换热过程进行了实验研究。结果表明：微肋管内过热蒸汽过热度降低的速率明显高于光管，且主要受质量流率和管壁过冷度的影响。本文得到的过热蒸汽凝结换热计算式与实验的偏差在±15%以内。

An experimental investigation of R134a superheated vapor condensation in the entrance region of three-dimensional microfin tube is conducted. The decease rate of superheated vapor temperature in the 3-D microfin tube is larger than that in smooth tube. The obtained empirical correlation of superheated vapor condensation has ±15% deviation when compared with the experimental data.

参考文献

[1]	R. L. Webb .Convective condensation of superheated vapor[J].Journal of heat transfer: Transactions of the ASME,1998(2):418-421.
[2]	Lee C C;Teng Y J;Lu D C.An Investigation of Condensation Heat Transfer of Superheated R-22 Vapor in a Horizontal Tube[A].,1991:1051-1057.
[3]	CHEN Qinghua;CUI Wenzhi;XIN Mingdao.Condensation in Horizontal Three-Dimensional Microfin Tube for Refrigerant R134a[A].,1999:115-119.
[4]	顾维藻.强化传热[M].北京:科学出版社,1990

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