EHD强化换热能耗的热力学第二定律分析  

Analysis of energy consumption of EHD enhancement of heat transfer using second law of thermodynamics

作　　者：万金庆[1,2] 李瑞阳[1] 郁鸿凌[1] 黄烜[1] 董伟[1] 

机构地区：[1]上海理工大学动力工程学院 [2]上海水产大学制冷工程系,上海200090

出　　处：《化工学报》2006年第1期27-30,共4页CIESC Journal

基　　金：国家重点基础研究发展规划项目(G2000026302);上海市基础研究重点项目(02DJ14049).~~

摘　　要：Based on the second law of thermodynamics,a method of energy consumption evaluation of electrohydrodynamics(EHD) enhancement of heat transfer was presented, the profit factor of available energy was newly defined.The experimental data were analyzed. The results showed that the profit factor of available energy increased with increasing heat flux under the same voltage given in experiments, while decreased with increasing voltage under the same heat flux given in experiments.It was found for the first time that the application of EHD enhancement of heat transfer was not economical when the voltage was higher than a critical value at a low heat flux. This method provided a theoretical basis for the economy of EHD heat transfer enhancement.Based on the second law of thermodynamics, a method of energy consumption evaluation of electrohydrodynamics （EHD） enhancement of heat transfer was presented, the profit factor of available energy was newly defined. The experimental data were analyzed. The results showed that the profit factor of available energy increased with increasing heat flux under the same voltage given in experiments, while decreased with increasing voltage under the same heat flux given in experiments. It was found for the first time that the application of EHD enhancement of heat transfer was not economical when the voltage was higher than a critical value at a low heat flux. This method provided a theoretical basis for the economy of EHD heat transfer enhancement.

关 键 词：可用能获益系数 强化系数 强化换热 电水动力学 

分 类 号：TK124[动力工程及工程热物理—工程热物理]