| 含有不凝气体的蒸汽滴状冷凝传热实验研究 |
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| 引用本文： | 周兴东,马学虎,张宇,兰忠,白涛,陈嘉宾.含有不凝气体的蒸汽滴状冷凝传热实验研究[J].工程热物理学报,2004,25(6):1001-1003. |
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| 作者姓名： | 周兴东 马学虎 张宇 兰忠 白涛 陈嘉宾 |
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| 作者单位： | 大连理工大学化学工程研究所,辽宁,大连,116012 |
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| 基金项目： | 国家自然科学基金资助项目(No.59906002)，教育部留学人员科研启动基金项目资助(No.1999-747) |
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| 摘 要： | 本文对饱和水蒸气和空气的混合物在垂直表面上滴状冷凝传热特性进行了实验研究。考察了不同的压力条件下不凝气对冷凝传热的影响。与膜状冷凝实验结果对比表明,滴状冷凝对含有不凝气的蒸汽冷凝传热有强化作用;在较高的冷凝压力下不凝气体对传热的影响相对较小。
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| 关 键 词： | 不凝气 滴状冷凝 强化传热 界面效应 |
| 文章编号： | 0253-231X(2004)06-1001-03 |
| 修稿时间： | 2004年1月11日 |
EXPERIMENTAL INVESTIGATION OF DROPWISE CONDENSATION IN THE PRESENCE OF NON-CONDENSABLE GAS |
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| ZHOU Xing-Dong MA Xue-Hu ZHANG Yu LAN Zhong BAI Tao CHEN Jia-Bin.EXPERIMENTAL INVESTIGATION OF DROPWISE CONDENSATION IN THE PRESENCE OF NON-CONDENSABLE GAS[J].Journal of Engineering Thermophysics,2004,25(6):1001-1003. |
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| Authors: | ZHOU Xing-Dong MA Xue-Hu ZHANG Yu LAN Zhong BAI Tao CHEN Jia-Bin |
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| Abstract: | Dropwise condensation heat transfer characteristics of saturated steam-air mixture were investigated experimentally on a vertical organic-film-coated plate. The Effects of the content of the non-condensable gas and the condensing pressure on the overall condensation heat transfer was tested. Compared to filmwise condensation, the fact that the condensation heat transfer of steam in the presence of air can be enhanced with the dropwise condensation is attributed to the liquid-vapor interfacial perturbation caused by the coalescence and departure of droplets. |
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| Keywords: | non-condensable gas dropwise condensation heat transfer enhancement interfacial effect |
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