| 镀层微观结构对凝结换热的影响 |
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| 引用本文： | 邹勇,程延海,赵亮,刘义达,程林.镀层微观结构对凝结换热的影响[J].工程热物理学报,2010(12). |
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| 作者姓名： | 邹勇 程延海 赵亮 刘义达 程林 |
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| 作者单位： | 山东大学热科学与工程研究中心;中国矿业大学机电工程学院; |
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| 基金项目： | 国家重点基础研究发展计划973项目(No.2007CB206900); 山东省自然科学基金重点资助项目(No.Z2007F05) |
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| 摘 要： | 通过研究Ni-P化学镀层管不同微观结构对凝结传热的影响,表明用化学镀表面改性的镀管相对于普通的碳钢管,具有明显促进珠状凝结的效果,在凝结过程中表现为珠膜共存状态,可以获得较好的换热性能。同时镀层对换热性能的改善与镀层中纳米相的含量相关,随着纳米相含量的降低,镀层的表面能也随着降低,换热效率得到增强。增加镀层的非晶度可以获得更好的珠状凝结的效果。
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| 关 键 词： | 化学镀 珠状凝结 表面能 |
EFFECT OF COATING MICROSTRUCTURE ON CONDENSATION HEAT TRANSFER |
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| ZOU Yong CHENG Yan-Hai ZHAO Liang LIU Yi-Da CHENG Lin.EFFECT OF COATING MICROSTRUCTURE ON CONDENSATION HEAT TRANSFER[J].Journal of Engineering Thermophysics,2010(12). |
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| Authors: | ZOU Yong CHENG Yan-Hai ZHAO Liang LIU Yi-Da CHENG Lin |
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| Institution: | ZOU Yong~1 CHENG Yan-Hai~2 ZHAO Liang~1 LIU Yi-Da~1 CHENG Lin~1 (1.Institute of Thermal Science and Technology,Shandong University,Jinan 250061,China,2.School of Mechanical and Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | In this study the effect of microstructure of Ni-P coating on condensation heat transfer performance was reported.The experimental results show that the steel tube with electroless Ni-P coating can greatly improve the performance of condensation heat transfer compared to un-coated steel tubes.The condensation state on tubes with Ni-P coating is the co-existence state of both dropwise and filmwise on most working conditions.At the same time,the heat transfer efficiency of condensation is improved with the de... |
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| Keywords: | electroless plating dropwise condensation surface free energy |
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