| 输油管道对流换热系数模型 |
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| 引用本文： | 尹铁男,宫敬,张金波,王磊. 输油管道对流换热系数模型[J]. 科学技术与工程, 2011, 0(22): 5278-5280,5285 |
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| 作者姓名： | 尹铁男 宫敬 张金波 王磊 |
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| 作者单位： | 中国石油大学(北京),城市油气输配技术北京市重点实验室,北京102249 |
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| 基金项目： | 国家科技重大专项课题子课题 2008ZX05026-004-03 |
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| 摘 要： | 热油管道能耗巨大,其散热问题的研究具有极高的工程应用价值。尽管在很多情况下流体与管壁间的对流换热系数很大,可以在总传热系数计算中忽略对流换热系数的影响,但并不总是如此。主流与近壁边界间的过渡区、即热边界层内的换热是不可忽略的。采用动量热量比拟的方法建立输油管道对流换热系数模型,并在此基础上对总传热系数进行了分析计算。计算结果表明,边界层内的对流换热系数对管道的总传热系数具有较大影响。
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| 关 键 词： | 管道 对流换热 温度分布 |
| 收稿时间： | 2011-04-19 |
| 修稿时间： | 2011-04-19 |
A model for convective heat transfer coefficient in petroleum pipeline |
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| yintienan,gongjing,zhangjinbo and wanglei. A model for convective heat transfer coefficient in petroleum pipeline[J]. Science Technology and Engineering, 2011, 0(22): 5278-5280,5285 |
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| Authors: | yintienan gongjing zhangjinbo wanglei |
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| Affiliation: | Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum (Beijing), Changping,, |
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| Abstract: | The heat loss of the hot oil pipeline is very high, so it is of great practical value. In this paper a model for convective heat transfer coefficient in petroleum is proposed, and then the overall heat transfer coefficient is analyzed. The results show that, the convective heat transfer coefficient always has a great impact on the overall heat transfer of the pipeline. |
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| Keywords: | pipeline convective heat transfer boundary layer temperature distribution |
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