| 分子自组装膜表面滴膜共存冷凝传热的研究 |
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| 引用本文： | 马学虎,李晓楠,兰忠,宋天一,周兴东.分子自组装膜表面滴膜共存冷凝传热的研究[J].工程热物理学报,2008,29(12). |
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| 作者姓名： | 马学虎 李晓楠 兰忠 宋天一 周兴东 |
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| 作者单位： | 大连理工大学化工研究所,辽宁,大连,116012 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才基金项目 |
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| 摘 要： | 本文以不同处理工艺制备十八烷基硫醇自组装膜,研究制备的表面上蒸气冷凝传热过程.结果表明不同的成膜温度,可以实现膜表面上水蒸气冷凝形态从膜状到滴状的过渡.并研究了该表面上滴膜共存状态下的冷凝传热特性,表明过渡状冷凝传热随固液自由能差渐进变化的实质是冷凝形态的渐进变化,表面上冷凝液运动形态的不同也将导致传热性能的改变,并对自组装膜表面上的冷凝传热系数可能随操作时间的增加而回升的现象进行了分析.
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| 关 键 词： | 分子自组装膜 冷凝形态 滴膜共存 成膜温度 |
INVESTIGATION OF FILMWISE-DROPWISE COEXISTING CONDENSATION HEAT TRANSFER ON SAMs |
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| MA Xue-Hu,LI Xiao-Nan,LAN Zhong,SONG Tian-Yi,ZHOU Xing-Dong.INVESTIGATION OF FILMWISE-DROPWISE COEXISTING CONDENSATION HEAT TRANSFER ON SAMs[J].Journal of Engineering Thermophysics,2008,29(12). |
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| Authors: | MA Xue-Hu LI Xiao-Nan LAN Zhong SONG Tian-Yi ZHOU Xing-Dong |
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| Institution: | MAXue-Hu LIXiao-Nan LAN Zhong SONG Tian-Yi ZHOU Xing-Dong (Institute of Chemical Engineering,Dalian University of technology,Dalian 116012,China) |
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| Abstract: | The effects of self-assembled mono layers(SAMs)of n-octadecyl mercaptan coatings heat treatment on the condensation modes and heat transfer characteristics of dropwise-filmwise coexisting condensation were investigated experimentally.The results show that the condensation modes trans- form from filmwise to dropwise on SAMs with different heat treatment temperature.The transition condensation heat transfer is also affected by gradual change of solid-liquid free energy difference re- flected by condensation m... |
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| Keywords: | SAMs condensation mode coexisting heat treatment temperature |
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