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简便通用型蒸气压方程及汽化热的新算法
引用本文:梁燕波,童景山.简便通用型蒸气压方程及汽化热的新算法[J].工程热物理学报,1998(6).
作者姓名:梁燕波  童景山
作者单位:徐州师范大学化学系!徐州221009(梁燕波),清华大学化学工程系!北京100084(童景山)
摘    要:1概述至今为止,已发表的通用蒸气压方程比较多,但在工程上获得广泛应用的却很少,其中最受青睐的是Antoine蒸气压方程。该方程使用简便,在一定温度范围内计算精度也较满意,但方程中的三个常数需用实测的蒸气压数据回归确定,这给工程计算带来不便。鉴于此,本文通过对该方程结构特性进行研究,认为此方程常数与物质结构性质密切相关,并找到了直接确定常数的方法。2Antoine常数的确定方法本文首先选用了正常沸点(几,K),临界点(尺,To)以及定义偏心因子(叫值的状态点,把Antoine方程应用于该三个状态点,通过联立求解,由此导出…

关 键 词:蒸气压方程  汽化热  Antoine方程常数

A SIMPLE GENERAL VAPOUR PRESSURE EQUATION AND A NEW CALCULATED METHOD ABOUT HEAT OF VAPOURIZTION
LIANG Yanbo.A SIMPLE GENERAL VAPOUR PRESSURE EQUATION AND A NEW CALCULATED METHOD ABOUT HEAT OF VAPOURIZTION[J].Journal of Engineering Thermophysics,1998(6).
Authors:LIANG Yanbo
Institution:LIANG Yanbo (Department of Chemistry Xu Zhou Teacher's University Xu Zhou 221009)TONG Jingshan (Department of Chemical Engineering Tsinghua University Bejing 100084)
Abstract:apour pressure data of substances were analyzed and studied in the paper. Antoineequation was considered to be most suitable change law of saturated vapour presstire andsaturated temperature. But the constants in Antoine equation were determined by regressionof measured vapour pressure data. The calculated method was presented about constantsof Antoine equation in the paper.The method was examined by a lot of substances, givingsatisfactory results.
Keywords:vapour pressure equation  heat of vapourization  constants of Antoine equation  
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