| 二元混合蒸气凝结液界面温度的计算 |
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| 引用本文： | 胡申华,严俊杰,李杨. 二元混合蒸气凝结液界面温度的计算[J]. 中国电机工程学报, 2011, 31(11) |
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| 作者姓名： | 胡申华 严俊杰 李杨 |
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| 作者单位： | 1. 新疆大学电气工程学院,新疆维吾尔族自治区,乌鲁木齐市,830047
2. 西安交通大学能源与动力工程学院,陕西省,西安市,710049 |
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| 基金项目： | 国家自然科学基金项目(50966003)~~ |
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| 摘 要： | 在竖直的非均匀温度场凝结表面上进行了二元混合蒸气的Marangoni凝结实验.实验结果表明表面传热系数与表面过冷度呈现具有峰值的非线性特性,气相质量浓度为1%的混合蒸气传热系数最高.为进行传热系数的理论计算,利用二元混合蒸气膜状凝结理论,计算了界面温度.结果表明:界面温度在过冷度为零时等于该浓度下的气相温度,随着过冷度的增大,界面温度逐渐下降,直至达到该浓度下的液相温度之后就不再随过冷度变化.对同一浓度而言,流速越大,达到液相温度所对应的过冷度也越大;达到液相温度所对应的过冷度随着压力的增大而减小.界面温度的计算为传热系数的理论计算提供了可能.
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| 关 键 词： | Marangoni凝结 界面温度 二元混合蒸气 珠状凝结 |
Interface Temperature of Condensate for Binary Mixtures |
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| HU Shenhua , YAN Junjie , LI Yang. Interface Temperature of Condensate for Binary Mixtures[J]. Proceedings of the CSEE, 2011, 31(11) |
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| Authors: | HU Shenhua YAN Junjie LI Yang |
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| Affiliation: | HU Shenhua1,YAN Junjie2,LI Yang2(1.Electrical Engineering College,Xinjiang University,Urumqi 830047,Xinjiang Uygur Autonomous Region,China,2.School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,Shaanxi Province,China) |
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| Abstract: | An experiment on Marangoni condensation of binary mixtures was made on non-isothermal vertical surface.The experimental result shows that with the increase of vapor-to-surface temperature difference,the condensation curves of heat transfer coefficient reveal nonlinear characteristics and have peak values.There was the highest heat transfer coefficient at an ethanol vapor concentration of 1%.Interface temperature was presented on grounds of theory of laminar film condensation of binary mixtures for theoretic... |
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| Keywords: | Marangoni condensation interface temperature binary mixtures dropwise condensation |
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