THE MODIFIED LEUNG-GRIFFITHS MODEL OF VAPOR-LIQUID-EQUILIBRIUM - EXTENDED SCALING AND BINARY-MIXTURES OF DISSIMILAR FLUIDS

被引：7
|
作者：
LYNCH, JJ [1 ]
RAINWATER, JC [1 ]
机构：
[1] NATL INST STAND & TECHNOL,DIV THERMOPHYS,BOULDER,CO 80303
来源：
FLUID PHASE EQUILIBRIA | 1992年 / 75卷
关键词：
BUTANE; CARBON DIOXIDE; CRITICAL REGION; EXTENDED SCALING; LEUNG-GRIFFITHS MODEL; SIMPLEX FITTING; VAPOR-LIQUID EQUILIBRIUM; WEGNER CORRECTION;
D O I：
10.1016/0378-3812(92)87004-7
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Extended scaling or the Wegner correction has been added to a model of vapor-liquid equilibrium (VLE) designed for the extended critical region. The model, that of Leung and Griffiths as modified by Moldover, Rainwater and co-workers, has heretofore incorporated only simple scaling. The revised formalism has been applied to the abundant data on carbon dioxide + n-butane, where versions of the model with and without extended scaling have been optimized by the simplex method. With extended scaling, the average thermodynamic "distance" between a measured and calculated dew or bubble point decreases by approximately 30 percent.
引用
收藏
页码：23 / 37
页数：15
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