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CALCULATION OF THERMODYNAMIC PROPERTIES OF REAL FLUIDS AND VAPOR-LIQUID EQUILIBRIA BY USING A CANONICAL PARTITION FUNCTION (Ⅰ) THERMODYNAMIC PROPERTIES OF PURE FLUIDS

张常群; 赵传钧; 白守礼   

  1. Beijing Institute of Chemical Technology, Beijing
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1987-12-28 发布日期:1987-12-28
  • 通讯作者: 张常群

CALCULATION OF THERMODYNAMIC PROPERTIES OF REAL FLUIDS AND VAPOR-LIQUID EQUILIBRIA BY USING A CANONICAL PARTITION FUNCTION (Ⅰ) THERMODYNAMIC PROPERTIES OF PURE FLUIDS

ZHANG Changqun; ZHAO Chuanjun; BAI Shouli   

  1. Beijing Institute of Chemical Technology, Beijing
  • Received:1900-01-01 Revised:1900-01-01 Online:1987-12-28 Published:1987-12-28
  • Contact: ZHANG Changqun

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摘要： 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.By this new equation of state the calculated results for pressure and fugacity coefficient of pure gases have slightly better accuracy than those by the original Anderson-Prausnitz equation, and those for saturated vapor pressure are in good agreement with observed results.

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.By this new equation of state the calculated results for pressure and fugacity coefficient of pure gases have slightly better accuracy than those by the original Anderson-Prausnitz equation, and those for saturated vapor pressure are in good agreement with observed results.

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