不同计算方法所得扁管直翅换热器翅片肋效率的比较  

Comparsion of the Fin Efficiencies of Flat Tube Fin Heat Exchange Obtained by Different Methods

作　　者：刘彦军[1] 王良璧[1] 宋克伟[1] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2009年第3期144-147,共4页Journal of Lanzhou Jiaotong University

摘　　要：采用数值计算方法对翅片管管片式换热器的肋效率进行了计算和分析,研究扁管肋片厚度、导热系数等因素对肋效率的影响,得出翅片管管片在局部换热系数和平均换热系数下,肋效率的对比分析.The fin efficiency of flat tube-fin heat exchanger is analyzed with numerical method with consideration of the effects of the pitch of the tube, the fin thickness and heat transfer coefficient on fin efficiency. The differences of the fin efficiency obtained by using the local and averaged heat transfer coefficients are analyzed.

关 键 词：肋效率 数值计算 传热 散热器 

分 类 号：TK123[动力工程及工程热物理—工程热物理]