| THERMODYNAMIC ANALYSIS AND PERFORMANCE EVALUATION OF CONVECTIVE HEAT TRANSFER THROUGH DUCTS |
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| 引用本文： | Li Yourong Jin Mingcong Tang Jingwen. THERMODYNAMIC ANALYSIS AND PERFORMANCE EVALUATION OF CONVECTIVE HEAT TRANSFER THROUGH DUCTS[J]. 保鲜与加工, 1992, 0(3): 68-72 |
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| 作者姓名： | Li Yourong Jin Mingcong Tang Jingwen |
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| 作者单位： | Li Yourong Jin Mingcong Tang Jingwen |
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| 摘 要： | A second law analysis is carried out on convective heat transfer in fully developed region with constant wall temperature through circular, trianglar and rectangular ducts. Besides, the entropy generation rate expression is obtained and the loss rate of available energy in convective heat transfer processes is defined as well. At the same time, the influence of initial temperature difference between fluid and wall as well as the influence of fluid friction on the loss rate of available energy is discussed. Then, the thermodynamic performances of several typical ducts are compared. Finally , the optimum initial temperature difference with the minimum loss rate of available energy is also obtained.
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| 关 键 词： | thermodynamic analysis convective heat transfer fully developed region en-tropy generation / loss rate of available energy performance evaluation ducts |
THERMODYNAMIC ANALYSIS AND PERFORMANCE EVALUATION OF CONVECTIVE HEAT TRANSFER THROUGH DUCTS |
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| Li Yourong Jin Mingcong Tang Jingwen. THERMODYNAMIC ANALYSIS AND PERFORMANCE EVALUATION OF CONVECTIVE HEAT TRANSFER THROUGH DUCTS[J]. Storage & Process, 1992, 0(3): 68-72 |
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| Authors: | Li Yourong Jin Mingcong Tang Jingwen |
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| Affiliation: | Li Yourong Jin Mingcong Tang Jingwen |
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| Abstract: | A second law analysis is carried out on convective heat transfer in fully developed region with constant wall temperature through circular, trianglar and rectangular ducts. Besides, the entropy generation rate expression is obtained and the loss rate of available energy in convective heat transfer processes is defined as well. At the same time, the influence of initial temperature difference between fluid and wall as well as the influence of fluid friction on the loss rate of available energy is discussed. Then, the thermodynamic performances of several typical ducts are compared. Finally , the optimum initial temperature difference with the minimum loss rate of available energy is also obtained. |
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| Keywords: | thermodynamic analysis convective heat transfer fully developed region en-tropy generation / loss rate of available energy performance evaluation ducts |
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