微肋管及强化微肋管换热和阻力实验研究  

EXPERIMENTAL STUDY OF THE FLOW AND HEAT TRANSFER OF A MICRO-FIN AND AN ENHANCED MICRO-FIN TUBE

作　　者：李晓伟[1] 孟继安[1] 陈泽敬[1] 李志信[1] 

机构地区：[1]清华大学航天航空学院传热与能源利用北京市重点实验室,北京100084

出　　处：《工程热物理学报》2007年第5期817-819,共3页Journal of Engineering Thermophysics

基　　金：国家973重点基础研究发展规划项目资助(No.2007CB206901)

摘　　要：实验研究了微肋管在过渡区及湍流区的换热及阻力性能,并针对微肋管在过渡区的换热强化较差的特点改进其结构。实验结果表明,改进后的微肋管在2300<Re<10000时比原微肋管强化换热提高120%,阻力增加70%～120%。The flow and heat transfer performance of a micro-fin tube in transition and turbulent flow region was experimentally studied, Aiming at improving the heat transfer performance at the transition region, an enhanced micro-fin tube was manufactured. The experimental results showed that the enhanced micro-fin tube can enhance heat transfer 120% at Reynolds number between 2300 and 10000 compared to the original micro-fin tube, while the pressure drop was increased 70%-120%.

关 键 词：微肋管 单相对流 强化换热 实验研究 

分 类 号：TK124[动力工程及工程热物理—工程热物理]