R134a过热蒸汽在三维内微肋管内的凝结换热特性  

CONDENSATION OF R134a SUPERHEATED VAPOR IN THREE-DIMENSIONAL MICROFIN TUBE

作　　者：陈清华[1] 崔文智[1] 辛明道[1] 周杰[1] 张罡[1] 

机构地区：[1]重庆大学工程热物理研究所,重庆400044

出　　处：《工程热物理学报》2000年第4期483-486,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金!59676017

摘　　要：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望过冷度的影响.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% deviationwhen compared with the experimental data.

关 键 词：微肋管 过热蒸汽 凝结 换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]