| 水平肋管外凝结换热的理论与实验研究 |
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| 引用本文： | 厉彦忠,吴清金. 水平肋管外凝结换热的理论与实验研究[J]. 西安交通大学学报, 1987, 0(4) |
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| 作者姓名： | 厉彦忠 吴清金 |
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| 作者单位： | 西安交通大学动力机械工程系(厉彦忠)，西安交通大学动力机械工程系(吴清金) |
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| 摘 要： | 管外轧肋以强化凝结换热的方法应用得非常广泛,但定量描述这一强化过程的理论工作还远远落后于其应用程度.本文从肋管强化凝结换热的机理着手,经过细致的理论分析,对Borovkov 模型作了两个方面的修正:一是肋峰区与肋谷区凝结液压力差项的确定;另一是水平肋管底部凝结液附着区域的求取方法.从而建立起全面描述水平肋管外凝结换热的理论模型,并进行了求解.修正后的模型较原模型更加合理完善.为验证理论工作的准确程度,通过实验测定了平均凝结换热系数,并与理论计算值作了比较,比较结果基本令人满意.
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| 关 键 词： | 凝结换热 传热 |
THEORETICAL AND EXPERIMENTAL RESEARCH ON CONDENSATION HEAT TRANSFER OUTSIDE A FIN-TUBE |
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| Li Yanzhong Wu Qingjin. THEORETICAL AND EXPERIMENTAL RESEARCH ON CONDENSATION HEAT TRANSFER OUTSIDE A FIN-TUBE[J]. Journal of Xi'an Jiaotong University, 1987, 0(4) |
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| Authors: | Li Yanzhong Wu Qingjin |
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| Affiliation: | Department of Power Machinery Engineering |
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| Abstract: | It is imperative to develop the quantitative analysis describing fin-tubeenhancing condensation heat transfer because it considerably lags behind theapplication.Through theoretical analysis in detail on the mechanism of fin-tube enhancing condensation heat transfer,two considerable modifications onBorovkov model have been made in this paper in calculation of pressure gra-dient between fin peak and root areas,and determination of submerging angleat the bottom of a horizontal fin tube for a more appropriate theoretical mo-del.An experiment has been arranged for verifying the accuracy of the theoryby comparing the experimental data with the theoretical ones.The results showthat the theoretical model is basically satisfactory. |
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| Keywords: | condensation heat transfer |
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