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快速减压条件下液滴热动力学行为的实验研究
Experimental Study on Thermal-Dynamical Behaviors of Liquid Droplets During Quick Depressurization
查看参考文献9篇
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文摘
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实验研究了快速降压过程中悬挂单水滴闪蒸/冻结过程,得到了典型条件下液滴闪蒸/冻结过程的热动力学特征,并基于实验观测结果,探讨了不凝气体对液滴闪蒸/冻结热动力学过程的影响。实验发现,起始冻结时的液滴过冷度近似为常数,而再辉温度对应于终态蒸汽分压所确定的气固相变平衡温度。这些结果有助于正确预言高真空环境中的液滴闪蒸/冻结特征。 |
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其他语种文摘
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The evaporating-freezing process of single pensile water droplet during quick depressurization is studied experimentally.The typical characteristics of the thermal-dynamical behaviors of this process are obtained.Based on the experimental observations,the influences of non-condensable gases on the process are analyzed and discussed in detail.It is pointed out that the subcooling corresponding to the onset of freezing of the droplet is nearly a constant,and the recalescence temperature is approximatively equal to the vapor-solid equilibrium temperature determined by the partial pressure of vapor at the terminal state.The present results are helpful for predicting correctly the evaporating-freezing processes of liquid droplets in high vacuum environment. |
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来源
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工程热物理学报
,2012,33(8):1349-1352 【核心库】
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关键词
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液滴
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闪蒸
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冻结
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不凝气体
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地址
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中国科学院力学研究所, 中国科学院微重力重点实验室, 北京, 100190
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语种
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中文 |
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ISSN
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0253-231X |
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学科
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能源与动力工程 |
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基金
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中国科学院“知识创新工程”资助项目
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文献收藏号
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CSCD:4616311
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参考文献 共
9
共1页
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被引
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被引
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被引
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7.
刘伟民.
真空闪蒸过程中换热与流动机理的研究,2006
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被引
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8.
刘璐.
降压过程中及低压环境下液滴相变传热传质的机理研究,2010
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被引
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9.
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被引
7
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