电场分布对R123沸腾换热的影响  

Effects of electric field distribution on R123 boiling heat transfer enhancement

作　　者：黄烜[1] 李瑞阳[1] 郁鸿凌[1] 刘春艳[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《化工学报》2007年第8期1926-1930,共5页CIESC Journal

基　　金：上海理工大学博士启动基金项目~~

摘　　要：采用6种不同电极布置方式,进行了不同电势和热流密度下的R123池沸腾换热的试验研究。通过数值分析,计算了不同电极布置下换热面上的电场强度及分布。不同的电极布置,会导致换热面上电场强度和电场均匀性两方面的变化。结合试验和电场分布的计算结果,分析了电场均匀性、电场强度、热流密度与沸腾换热效果之间的关系。结果表明,在低热流密度下,电场分布对沸腾换热影响较大;而在高热流密度下,影响较小。电水动力学(EHD)强化换热效果是电场强度和电场均匀性综合作用的结果。The effect of six different electrode arrangements on R123 pool boiling heat transfer was investigated. The resultant electric field intensities and distributions on the heat transfer surface were numerically calculated. Both electric field intensity and homogeneity on the heat transfer surface were different for different electrode arrangements. It was found that heat transfer enhancement was related to electric field homogeneity, electric field intensity and heat flux. At a lower heat flux, heat transfer was enhanced more significantly than at a higher heat flux. Meanwhile the higher the electric potential, the more significant the heat transfer enhancement. Electro-hydrodynamics （EHD） boiling heat transfer enhancement was the result of both electric field intensity and homogeneity.

关 键 词：电场分布 电水动力学 强化换热 沸腾换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]