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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  0, Vol. 6 Issue (100): 17-22    DOI: 10.1631/jzus.2005.AS0017
Mechanical & Energy Engineering     
Extension of LCVM-type mixing rule to three-parameter equations of state for vapor-liquid equilibria of mixtures
HAN Xiao-hong, CHEN Guang-ming, WANG Qin, CUI Xiao-long
Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China
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Abstract  In this paper, the LCVM mixing rule is extended to the multi-parameter equations of state by combining infinite-pressure and zero-pressure mixing rule models. The new LCVM-type mixing rule, coupled with Patel-Teja equation of state (EOS) is applied for vapor-liquid equilibria of different polar and non-polar systems in which the NRTL activity coefficient model is used to calculate the excess Gibbs free energy. The tested results agree well with existing experimental data within a wide range of temperatures and pressures. In comparison with the Van der Waals mixing rule, the new mixing rule gives much better correlations for the vapor-liquid equilibria of non-polar and polar systems.

Key words： Vapor-liquid equilibrium (VLE)      Equation of state (EOS)      Mixing rule      Activity coefficient model     
Received: 09 April 2005     
CLC:  O642.4  
  TQ013.1  
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HAN Xiao-hong
CHEN Guang-ming
WANG Qin
CUI Xiao-long
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HAN Xiao-hong, CHEN Guang-ming, WANG Qin, CUI Xiao-long. Extension of LCVM-type mixing rule to three-parameter equations of state for vapor-liquid equilibria of mixtures. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 0, 6(100): 17-22.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2005.AS0017     OR     http://www.zjujournals.com/xueshu/zjus-a/Y0/V6/I100/17

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[1] HAN Xiao-hong, CHEN Guang-ming, WANG Qin, CUI Xiao-long. Extension of LCVM-Type mixing rule to three-parameter equations of state for vapor-liquid equilibria of mixtures[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2005, 6(Supplement1): 17-22.