| 环形流道内对流换热过程的热力学分析及优化 |
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| 引用本文： | 李友荣. 环形流道内对流换热过程的热力学分析及优化[J]. 重庆大学学报(自然科学版), 1991, 14(5): 64-68 |
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| 作者姓名： | 李友荣 |
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| 作者单位： | 重庆大学热力工程系 |
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| 摘 要： | 利用热力学第二定律对管壁热流恒定时环形流道内充分发展区层流对流换热过程进行研究,得到了熵产的一般表达式,讨论了流体温升、换热强度及流动压降对熵产的影响;同时,从减小熵产的角度出发,对流道进行了优化计算。
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| 关 键 词： | 环形流道 对流换热 热力学 熵产 |
THERMODYNAMIC ANALYSIS AND OPTIMIZATION OF CONVECTIVE HEAT TRANSFER THROUGH A HORIZONTAL ANNULUS |
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| Li Yourong. THERMODYNAMIC ANALYSIS AND OPTIMIZATION OF CONVECTIVE HEAT TRANSFER THROUGH A HORIZONTAL ANNULUS[J]. Journal of Chongqing University(Natural Science Edition), 1991, 14(5): 64-68 |
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| Authors: | Li Yourong |
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| Abstract: | A second law analysis is carried out on convective heat transfer through a horizontal annulus with constant heat flux. The entropy generation rate expression is obtained,and the influence of heat transfer across a finite temperature difference and fluid friction on the entropy generation rate is discussed. The optimum geometric parameters of a horfzontal annulus is found for which the entropy generated is minimum. The optimum fluid velocity which corresponds to the optimum geometric parameters is recommended. |
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| Keywords: | thermodynamic analysis optimization convective heat transfer entropy generation horizontal annulus |
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