双侧强化管热阻分离实验研究  

Experimental Study of Thermal Resistances Discretization on Doubly-Enhanced Tubes

作　　者：赵安利[1] 田松娜[1] 张定才[1] 杨晓明[1] 

机构地区：[1]中原工学院,郑州450007

出　　处：《中原工学院学报》2011年第1期15-18,共4页Journal of Zhongyuan University of Technology

基　　金：河南省科技攻关项目(092102210288)

摘　　要：通过对3根水平双侧强化管进行冷凝实验,用Wilson热阻分离方法计算出换热管管内强化倍率,并找出了影响管内表面传热系数的因素.实验与计算结果显示,在本文研究范围内,管内强化倍率随内齿高度的增大而增大,其原因是强化管内表面凸起使流体流过时形成周期性的扰动,强化了换热.Experimental study on condensation heat transfer are conducted over three horizontal doubly-enhanced tubes.Wilson＇s thermal resistance discretization are used to calculate inner enhancement rate,some influent factors are studied,too.Experimental and calculating results indicate that with the increase of inner fin height,the enhancement rate is increased,within the tube parameters studied by this paper.The reason is that the convexes of helical rib results in the fluid periodic disturbances and enhances the heat transfer.

关 键 词：双侧强化管 热阻分离 强化倍率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]