Calculation of Thermodynamic Properties of RealFluids and Vapor-Liquid Equilibria byUsing a Canonical Partition Function( I ) Thermodynamic Properties of Pure Fluids

张常群; 赵传钧; 白守礼

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Calculation of Thermodynamic Properties of RealFluids and Vapor-Liquid Equilibria byUsing a Canonical Partition Function( I ) Thermodynamic Properties of Pure Fluids

更新时间：2025-12-16

- Calculation of Thermodynamic Properties of RealFluids and Vapor-Liquid Equilibria byUsing a Canonical Partition Function( I ) Thermodynamic Properties of Pure Fluids
- CIESC Journal Issue 3, (1985)
- 作者机构：
  
  北京化工学院,北京化工学院,北京化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 September 1985，
  
  Published：25 September 1985
- 稿件说明：
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张常群, 赵传钧, 白守礼. Calculation of Thermodynamic Properties of RealFluids and Vapor-Liquid Equilibria byUsing a Canonical Partition Function( I ) Thermodynamic Properties of Pure Fluids[J]. CIESC Journal, 1985, (3).
DOI：

张常群, 赵传钧, 白守礼. Calculation of Thermodynamic Properties of RealFluids and Vapor-Liquid Equilibria byUsing a Canonical Partition Function( I ) Thermodynamic Properties of Pure Fluids[J]. CIESC Journal, 1985, (3). DOI：

摘要

通过修改普遍化van der Waals正则配分函数的引力项

发展了一个修正的状态方程式.将表征分子间引力参数α修正为不仅依赖于温度而且与密度有关.用新的状态方程式计算纯气体、饱和蒸汽与饱和液体的压力与逸度系数的结果与实验结果符合较好.

Abstract

The Anderson-Prausnitz equation of state has been improved by modifying the attractive term of the generalized van der Waals canonical partition function. In this modification

the parameter characterizing the intermolecular attractive forces is considered to depend not only on temperature but also on density. The calculated results for pressure and fugacity of pure gases

and for saturated vapors and saturated liquids

by using this new equation of state are in good agreement with observed results. Extension to mixtures and multicomponent vapor-liquid equilibria will be presents in Part 2.

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