电场极性对池沸腾换热影响的实验研究  

EXPERIMENTAL STUDY OF INFLUENCE OF POLARITIES ON POOL BOILING HEAT TRANSFER IN AN ELECTRIC FIELD

作　　者：董智广[1] 郁鸿凌[1] 黄炬[1] 李瑞阳[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》2008年第6期995-998,共4页Journal of Engineering Thermophysics

基　　金：上海理工大学博士科研启动基金资助(No.X621)

摘　　要：利用EHD技术对工质R123进行了非均匀高压电场下电场极性对池沸腾换热影响的实验研究。结果表明:无论施加正、负电压,强化系数均随热流密度的增加而下降,最终达到稳定值;高热流密度下,正电压有较弱的强化效果,负电压对沸腾换热具有削弱作用;正电压下的强化换热效果优于负电压下的强化换热效果.The experimental study of electrohydrodynamic influence of boiling heat transfer with R123 under different polarities in nonuniform electric field was presented in this paper. The experimental results show that enhancement factor decreases with the increasing of heat flux ,and reaches a steady value whether under positive voltage or negative voltage; the enhancement effect of positive voltage is relatively weak and the negative voltage can weaken boiling heat transfer under high heat flux; positive voltage brings better enhancement effect of heat transfer than negative voltage.

关 键 词：EHD 沸腾换热 强化传热 非均匀电场 极性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]