| 势容损耗及熵产与导热优化 |
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| 引用本文： | 韩光泽,郭平生,李绍新,华贲.势容损耗及熵产与导热优化[J].华北电力大学学报,2004,31(6):24-27. |
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| 作者姓名： | 韩光泽 郭平生 李绍新 华贲 |
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| 作者单位： | 华南理工大学,应用物理系,广东,广州,510640;广西师范大学,物理与信息工程学院,广西,桂林,541002;华南理工大学,强化传热与过程节能教育部重点实验室,广东,广州,510640 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(G20000263). |
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| 摘 要： | 热量传递势容(势容)反映了物体的导热能力,在导热过程中势容有损耗,对应于势容损耗最小的导热过程效率最高,传热速率最大。熵反映了过程的可逆性,在导热过程中熵有增加(熵产),对应于熵产最小的过程是 损失最小的过程,这种过程最大程度地保持了系统作有效功的能力。讨论了势容损耗和熵产在导热优化中的作用,以圆形导热管为例,分析了这两种优化目标函数的差异。
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| 关 键 词： | 势容损耗 熵产 导热过程优化 |
| 文章编号： | 1007-2691(2004)06-0024-04 |
| 修稿时间： | 2004年8月1日 |
Dissipation of heat transport potential capacity and entropy production in heat conduction optimization |
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| HAN Guang-ze,GUO Ping-sheng,LI Shao-xin,HUA Ben.Dissipation of heat transport potential capacity and entropy production in heat conduction optimization[J].Journal of North China Electric Power University,2004,31(6):24-27. |
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| Authors: | HAN Guang-ze GUO Ping-sheng LI Shao-xin HUA Ben |
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| Affiliation: | HAN Guang-ze1,GUO Ping-sheng2,LI Shao-xin1,HUA Ben3 |
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| Abstract: | Heat transportpotential capacity demonstratesthe heat conduction capacity of a body, it couldbepartially dissipated in the heat conduction process. The process with the least dissipation of heat transport potential capacity correspondsto thehighestheat conduction efficiency. Entropy demonstratesthe reversibility of any thermodynamic process. Entropy production appears in the processofheat conduction. Theprocess with the least entropy production corresponds to that with the least exergy dissipation, which retains the ability of doing useful work to the utmost extent. The functions of heat transport potential capacity and entropy production in heat conduction optimization are discussed, and the difference in heat conduction optimization of cylinder pipe is analyzed. |
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| Keywords: | dissipation of heat transport potential capacity entropy production heat conduction optimization |
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