摘要
对管道内充分发展对流传热过程的有效能损失进行了分析．根据定型流状态下定热流与定壁温换热条件的特点,经代数推演,得到了这两种条件下的表征换热状态、流动功耗以及黏性变化的无量纲形式的有效能损失关系式,适用于不同截面形状的管道内的层流与湍流工况下的有效能分析．
An analytical study is conducted on energy losses of a fully developed convective heat transfer inside tubes. With the assumption of a fully developed inside tube flow subjected to constant wall heat flux or constant wall temperature, approximate expressions for dimensionless energy losses describing effects of heating, pumping power and the variation of viscosity are obtained. The present model is applicable for the energy analysis on fully developed laminar and turbulent flows inside tubes of a .variety of cross-sectional shape.
出处
《力学与实践》
CSCD
北大核心
2006年第5期16-18,共3页
Mechanics in Engineering
基金
天津科技大学科研基金项目(20040212)资助.
关键词
有效能
管内
对流
传热
exergy, inside tube, convective flow, heat transfer
