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Type: Artigo de periódico
Title: Parameters for the attractive coefficient of the Patel-Teja-Valderrama equation of state
Author: Aznar, M
Silva-Telles, A
Valderrama, JO
Abstract: A three-parameter form of the temperature dependence of the attractive term in cubic van der Waals type equations of state (AS: Almeida et al., 1991; Aznar and Silva-Telles, 1992) has been applied to a generalized equation of state known as the Patel-Teja-Valderrama equation (PTV, Valderrama, 1990). The parameters of the AS model in the PTV equation of state were calculated for 457 substances of different polarity, molecular size, and chemical nature. The parameters were calculated using vapor pressure data determined through accurate equations available in the literature (Wagner 1973, Antoine 1888, Frost and Kalkwarf, 1953). The deviations between the equation of state calculations and vapor pressure information are lower than 0.5% for most fluids. The study shows that both the generalized PTV cubic equation and the AS represent good tools for pressure-temperature calculations in engineering applications.
Subject: equations of state
vapor pressure
fluid properties
PTV equation
Country: Inglaterra
Editor: Taylor & Francis Ltd
Rights: fechado
Identifier DOI: 10.1080/00986440390226007
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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