R410A-油混合物在7mm水平直光管内流动沸腾的换热特性 Ⅱ.关联式  

Heat Transfer Characteristics of R410A-Oil Mixture Flow Boiling in a 7 mm Horizontal Straight Smooth Tube Ⅱ.Correlations

作　　者：胡海涛[1] 丁国良[1] 魏文建[1] 汪振策[1] 王凯建 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]日本富士通将军空调技术研究所

出　　处：《上海交通大学学报》2007年第10期1638-1642,共5页Journal of Shanghai Jiaotong University

基　　金：教育部新世纪优秀人才支持计划资助项目([2005]290)

摘　　要：基于R410A-油混合物管内流动沸腾换热的实验数据,对现有的制冷剂-油混合物的换热关联式进行了评价,对比发现已有关联式的预测值与实验值的误差最大达到80%.基于混合物物性,开发了R410A-油混合物在7 mm直光管内流动沸腾的流型图,并基于流型图和混合物物性开发了R410A-油在7 mm直光管内流动沸腾的换热关联式.所得关联式与90%的实验数据的误差在±20%以内,平均误差为11.8%,最大误差为26.7%.The predictive ability of the available state-of-the-art heat transfer correlations of refrigerant-oil mixture was evaluated with the experimental data of R410A-oil mixture flow boiling inside 7mm straight smooth tube. None of these correlations can predict the heat transfer coefficient of R410A-oil mixture satisfactorily. The flow pattern of R410A-oil mixture flow boiling inside 7mm straight smooth tube was developed based on mixture properties. A new correlation of heat transfer coefficient for R410A-oil mixture flow boiling inside 7 mm straight smooth tube was developed based on the flow pattern and mixture properties, and it can agree with 90% of the experimental data within deviation of ±20%, the average and maximum deviation are 11.8 % and 26.7 %, respectively.

关 键 词：R410A 油 流动沸腾 换热 关联式 

分 类 号：TK124[动力工程及工程热物理—工程热物理]