析湿工况下波纹翅片管换热器空气侧换热与压降特性  

Air-side heat transfer and friction characteristics of wavy fin-and-tube heat exchangers under dehumidifying conditions

作　　者：刘金平[1] 戴绍碧[1] 叶立平[1] 

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《化工学报》2009年第10期2438-2445,共8页CIESC Journal

基　　金："十一五"国家科技支撑计划重大项目(2006BAJ03A06);2007年粤港关键领域重点突破项目(TC07BF09-5)~~

摘　　要：研究了析湿工况下1、2排波纹翅片管换热器空气侧换热与压降特性,结果表明:管排数对空气侧换热特性的影响明显,2排管的换热因子要比1排管的换热因子大约60%,而管排数对空气侧摩擦因数影响则不明显;翅片效率随冷水入口温度的降低而增加,随入口风速的增加而快速降低;与其他学者的预测模型相比,换热因子偏小30%。The air-side heat transfer and friction characteristics of one-row and two-row wavy fin-and-tube heat exchanger under dehumidifying condition were studied experimentally. The results showed that the heat transfer factor was strongly related to the number of rows, and the heat transfer factor of two-row heat exchanger was 60 % greater than that of one-row one. The effect of the number of rows on the friction factors could be negligible. Fin efficiency increased as inlet water temperature decreased, while it decreased as wind velocity increased. The experimental value of heat transfer factor was 30% lower than that predicted by the Pirompugd correlation .

关 键 词：波纹翅片 析湿工况 换热器 压降 翅片效率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]