管内与管外传热强化的热力学评价  

Enhancement Thermodynamic Evaluation of Internal Duct and External Duct

作　　者：李大鹏[1] 焦增庚[1] 孙丰瑞[1] 

机构地区：[1]海军工程学院

出　　处：《电站系统工程》1999年第3期7-11,共5页Power System Engineering

摘　　要：对管内、管外流动传热进行了熵产分析，在此基础上讨论了管内、管外传热强化分别相对于未强化的光管的热力学性能比较，分析了由传热不可逆和流动摩擦不可逆组成的总熵产的变化及两种不可逆在总熵产中的分配情况。Entropy analysis is carried out for enhancement of internal and external duct in this paper. Thermodynamic performance is compared before and after enhancement. The overall entropy generation including heat transfer and flow friction inreversibility as well as the contribution of these two kinds are analysized. Numerical examples of two kinds of enhancement are presented. The results are of importance to instruct the study as well as application of enhancement.

关 键 词：传热强化 熵产分析 热力学 

分 类 号：TK123[动力工程及工程热物理—工程热物理]