一个蒸发焓的估算方程CSGC-MHW方程  

An Equation for Estimating Enthalpies of Vaporization CSGC MHW Equation

作　　者：李平[1] 马沛生[1] 朱晨 

机构地区：[1]天津大学化学工程系

出　　处：《高校化学工程学报》1997年第1期78-82,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点蒸馏实验室基金

摘　　要：一个蒸发焓的估算方程ＣＳＧＣ－ＭＨＷ方程＊李平马沛生朱晨（天津大学化学工程系，天津３０００７２）关键词基团贡献蒸发焓流体物性估算１引言蒸发焓（ΔＶＨ）是物质的重要热力学性质，是化工过程计算、分析及设计的重要基础物性数据之一。由于目前已发表的蒸发焓实测...A modified equation for estimating enthalpy of vaoporization (CSGC MHW) was developed by using the entropy of vaporization estimated with group method instead of experimental enthalpy of vaporization required in original CSGC HW equation. Contribution values of 75 groups were obtained by correlating 1379 experimental data of enthalpy of vaporization of 480 substances including saturated hydrocarbons, unsaturated hydrocarbons, cyclohydrocarbons, aromatics, oxygen compounds, sulfocompounds, nitrogen compounds, halohydrocarbons et al. In the CSGC MHW equation the experimental data of normal boiling point are only required for accurately predicting enthalpie of vaporization of various compounds at the different temperatures.

关 键 词：基团贡献法 蒸发焓 CSGC-MHW方程 

分 类 号：TQ013.1[化学工程]