Analysis of the Temperature Deviation for Boiling of Liquid and Condensation of Vapor Using Kelvin Equation

大学化学 Pub Date : 2020-01-01 DOI:10.3866/pku.dxhx202002037

Z. Tao, Shuyong Zhang

引用次数: 0

Abstract

: The discrepancies for calculating condensation temperature and boiling temperature for droplet and small bubble using Kelvin equation were discussed. The discrepancies can be ascribed to the neglect of variation of the vapor pressure of curved surface to plain surface with temperature, and the misusing of Kelvin equation for small bubble during boiling. The way to reduce the discrepancy is introduced while the applicability of Kelvin equation is discussed.

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用开尔文方程分析液体沸腾和蒸汽冷凝的温度偏差

讨论了用开尔文方程计算液滴和小气泡的冷凝温度和沸腾温度的差异。这种差异可归因于忽略了曲面与平面的蒸气压随温度的变化，以及小气泡沸腾过程中开尔文方程的误用。介绍了减小误差的方法，并讨论了开尔文方程的适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

大学化学

自引率

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发文量

5852

期刊介绍： University Chemistry is an educational research academic journal supervised by the Ministry of Education and co-sponsored by Peking University and the Chinese Chemical Society. It was founded in 1986 and changed to a monthly publication in January 2016. Its purpose is to promote and deepen the reform of university chemistry education and serve to improve the level of chemistry teaching in my country. The main columns are: Today's Chemistry, Teaching Research and Reform, Knowledge Introduction, Chemical Experiments, Teacher-Student Chats, Future Chemists, etc. The journal has been included in many databases such as China Journal Network Full-text Database, Wanfang Database, Taiwan Huayi Database, Chinese Science and Technology Journal Database (Full-text Edition), and American Chemical Abstracts.