Excess enthalpy and vapor-liquid equilibrium prediction using non-random lattice fluid equation of state

Jeong Won Kang, J. Y. Kim, K. P. Yoo, C. S. Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Although an equation of state can be applied to volumetric properties, phase equilibria and excess enthalpy calculations, few studies have been published for a unified approach. This study presents the consistent application of lattice fluid model of You et al. Using pure component parameters fitted to saturation densities and vapor pressures, binary interaction parameters were determined. The binary parameter was found to be more sensitive to enthalpy. A linear temperature dependence of this parameter was found adequate. The method yields good results except for polar-nonpolar mixtures. For these systems, errors in vapor-liquid equilibria appear to be magnified.

Original languageEnglish
Pages (from-to)199-206
Number of pages8
JournalFluid Phase Equilibria
Volume150
Issue number151
Publication statusPublished - 1998 Sep 1

Fingerprint

liquid-vapor equilibrium
Equations of state
Phase equilibria
Enthalpy
equations of state
enthalpy
Fluids
fluids
predictions
Vapor pressure
vapor pressure
saturation
Temperature
temperature dependence
interactions

Keywords

  • Equation of State
  • Excess enthalpy
  • Lattice Fluid Theory
  • VLE

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry

Cite this

Excess enthalpy and vapor-liquid equilibrium prediction using non-random lattice fluid equation of state. / Kang, Jeong Won; Kim, J. Y.; Yoo, K. P.; Lee, C. S.

In: Fluid Phase Equilibria, Vol. 150, No. 151, 01.09.1998, p. 199-206.

Research output: Contribution to journalArticle

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