R410A与R22在水平微翅管内流动沸腾传热特性研究  

FLOW BOILING IN R410A AND R22 IN HORIZONTAL MICRO-FIN TUBES

作　　者：白健美[1] 马虎根[1] 姜岗[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《工程热物理学报》2009年第12期2081-2083,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50876068)

摘　　要：建立了水平管流动沸腾试验台,采用恒热流加热方法,对R410A在水平微翅管内流动沸腾特性进行了实验研究,分析了影响R410A在水平微翅管内换热系数的因素,考察了工质质量流量、热流密度、质量干度以及微翅管的几何参数对工质的流动沸腾换热性能的影响关系。通过对比R410A与R22的实验数据,分析比较二者的换热系数,结果表明R410A与R22相差不大,R22比R410A的换热系数大约高7.5%。In this paper, the single-tube experiments are conducted, and the various influence on heat transfer coefficients for flow boiling in R410A in micro finned tubes are analyzed. It is found that the mass flux, heat flux, mass quality and the geometric parameters of tubes are the important factors to affect the heat transfer of refrigerants. Then, the experimental data in R22 and R410A are compared while the differences of heat transfer coefficient between R22 and R410A are analyzed. It is found, at last, that the heat transfer coefficient is similar and the heat transfer coefficient in R22 is about 7.5 % inore than that in R410A.

关 键 词：水平微翅管 R410A 换热特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]