| 管内对流换热过程的分析 |
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| 引用本文： | 赵建伟,刁彦华,肖洪海,徐志明,王建国,杨善让.管内对流换热过程的分析[J].东北电力学院学报,1999(4). |
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| 作者姓名： | 赵建伟 刁彦华 肖洪海 徐志明 王建国 杨善让 |
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| 作者单位： | 东北电力学院教学务处!吉林 132012(赵建伟)，东北电力学院研究生部!吉林 132012(刁彦华，肖洪海)，东北电力学院动力工程系!吉林 132012(徐志明，杨善让)，东北电力学院自动控制系!吉林 132012(王建国) |
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| 基金项目： | 本研究得到国家电力公司资助（编号SPKJ013－07） |
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| 摘 要： | 以损失数作为目标函数来表征该热力学过程的不可逆程度，分析了管道内对流换热过程中的损。考察了管道工质的雷诺数对损失数的影响，并在定热流密度和定壁温两种情况下对损失系数进行了优化，结果表明：在定热流密度下，当流量为定值而管内径为变量时，损失系数有优化值。在定壁温情况下，损失系数无优化值。
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| 关 键 词： | 对流换热 损失系数 热力学过程 |
Exergy Analysis of Convection Heat Transfer Process inside Tube |
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| ZHAO Jian-wei,DIAO Yan-hua,XIAO Hong-hai,XU Zhi-ming,WANG Jian- guo,YANG Shan-rang.Exergy Analysis of Convection Heat Transfer Process inside Tube[J].Journal of Northeast China Institute of Electric Power Engineering,1999(4). |
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| Authors: | ZHAO Jian-wei DIAO Yan-hua XIAO Hong-hai XU Zhi-ming WANG Jian- guo YANG Shan-rang |
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| Abstract: | The exergy loss number is used in this paper as the objective function to indicate the irreversibility of the thermodynamic process. The exergy loss of the convection heat transfer process inside the tube is analyzed. And the influence of Reynolds number on the exergy number is also investigated. The optimal exergy loss number under two common conditions is derived. The results suggest that:under the condition of fixed heat flux,when the flow of pipe is fixed and the internal diameter is variable, it has an optimal value;but under the condition of fixed wall tempera- ture,it has no optimal number. |
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| Keywords: | convection heat transfer exergy loss number thermodynamic process |
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