传热管轴向导热影响的分析  

The Analysis of Axial Heat Conduction Effect on A Heat Transfer Pipe

作　　者：夏新林[1] 王克光[2] 尚德敏[2] 

机构地区：[1]哈尔滨工业大学热工教研室 [2]哈尔滨工业大学动力工程系

出　　处：《哈尔滨工业大学学报》1993年第5期22-26,共5页Journal of Harbin Institute of Technology

摘　　要：通过数值计算方法对传热管轴向导热的影响进行了分析。得出了不考虑轴向导热时传热系数和冷凝侧换热系数的误差;以及传热管材质不同在考虑轴向导热影响时的差别,并得出了材质导热系数较小时忽略轴向导热影响所引起误差增大的结论。为客观评价传热管的传热性能提供了一定依据。The effect of axial heat conduction on a heat transfer pipe is analyzed by numerical method.And the errors because of ignoring the axial heat conduction are presented for the heat transfer coefficient and the condensation heat exchange coefficient.The difference of pipe material is also considered to analyze the axial heat conductioneffect,and the conclusion is reached that the error caused by ignoring axial heat con-duction increases with the decrease of heat conductivity of the pipe material.To a cer-tain extent,the basis is provided for evaluating the heat transfer characteristics of a pipe.

关 键 词：传热管 传热系数 导热 数值计算 

分 类 号：TK124[动力工程及工程热物理—工程热物理]