| 换热器用多孔管沸腾传热物理模型比较 |
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| 引用本文： | 刘阿龙,徐宏,刘京雷,王学生,王宏智,张莉.换热器用多孔管沸腾传热物理模型比较[J].化学工程,2008,36(1):17-20. |
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| 作者姓名： | 刘阿龙 徐宏 刘京雷 王学生 王宏智 张莉 |
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| 作者单位： | 华东理工大学,机械学院,上海,200237 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 多孔管是一种新型高效强化沸腾传热的换热管,对其沸腾传热的物理模型的研究是深刻理解其强化传热机理和今后改进该技术的前提。通过总结国内外相关研究工作,介绍了烧结型和机加工型多孔管沸腾传热的物理模型。重点分析了多孔层特征参数(多孔层厚度、当量半径和孔隙率)对强化传热的影响。同时对各种模型的优缺点进行了分析归纳,探讨了多孔管沸腾传热物理模型研究的发展方向,对今后的发展提出了自己的建议。
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| 关 键 词： | 物理模型 沸腾传热 多孔管 换热器 |
| 文章编号： | 1005-9954（2008）01-0017-04 |
Comparison of physical models of boiling heat transfer of porous surface tubes for heat exchangers |
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| LIU A-long,XU Hong,LIU Jing-lei,WANG Xue-sheng,WANG Hong-zhi,ZHANG Li.Comparison of physical models of boiling heat transfer of porous surface tubes for heat exchangers[J].Chemical Engineering,2008,36(1):17-20. |
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| Authors: | LIU A-long XU Hong LIU Jing-lei WANG Xue-sheng WANG Hong-zhi ZHANG Li |
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| Abstract: | Porous surface tubes which are a kind of novel heat transfer tubes for enhancing heat exchanger efficiency are widely employed in the industries.The study of physical models for porous surface tubes is basic for understanding the mechanism of boiling heat transfer and its improvement.Several models about sintered and structured porous surface tubes were briefly reviewed.Effects of the characteristic parameters of porous surface layer(the thickness,equivalent radius and void fraction) on boiling heat transfer were analyzed.The advantage and disadvantage of the physical models of porous surface tubes were analyzed and summarized.Some problems on modeling of porous surface tubes were discussed,and some advices were given for understanding the mechanism on enhanced boiling heat transfer of porous surface tubes. |
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| Keywords: | physical model boiling heat transfer porous surface tubes heat exchangers |
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