Combined Helmholtz energy, extended corresponding states and local-composition model for fluid mixtures

Jorge Francisco Estela-Uribe; A. De Mendoza; J. P.M. Trusler

doi:10.1016/j.fluid.2004.06.006

Combined Helmholtz energy, extended corresponding states and local-composition model for fluid mixtures

Jorge Francisco Estela-Uribe
, A. De Mendoza
, J. P.M. Trusler

Pontificia Universidad Javeriana - Cali

Universidad Javeriana
Imperial College London

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We present a thermodynamic model of mixtures in which the Helmholtz energy is computed from an extended corresponding states (ECS) method with a correction term. The ECS model is based upon the van der Waals one-fluid theory with pure-component shape factors represented as functions of reduced temperature and density. The correction term is given by a local-composition model with a coordination number taken from lattice gas theory. Densities and speeds of sound of binary mixtures were calculated with deviations within ±0.20%, while deviations in bubble-point pressures were within ±2% on average.

Original language	English
Pages (from-to)	25-30
Number of pages	6
Journal	Fluid Phase Equilibria
Volume	222-223
DOIs	https://doi.org/10.1016/j.fluid.2004.06.006
State	Published - 15 Aug 2004

Keywords

Binary mixtures
Corresponding states
Densities
Helmholtz energy
Speeds of sound
Vapour pressures

Access to Document

10.1016/j.fluid.2004.06.006

Cite this

@article{ac3829b7e3424f12a0f0d7f2b4cfa4b1,

title = "Combined Helmholtz energy, extended corresponding states and local-composition model for fluid mixtures",

abstract = "We present a thermodynamic model of mixtures in which the Helmholtz energy is computed from an extended corresponding states (ECS) method with a correction term. The ECS model is based upon the van der Waals one-fluid theory with pure-component shape factors represented as functions of reduced temperature and density. The correction term is given by a local-composition model with a coordination number taken from lattice gas theory. Densities and speeds of sound of binary mixtures were calculated with deviations within ±0.20\%, while deviations in bubble-point pressures were within ±2\% on average.",

keywords = "Binary mixtures, Corresponding states, Densities, Helmholtz energy, Speeds of sound, Vapour pressures",

author = "Estela-Uribe, \{Jorge Francisco\} and \{De Mendoza\}, A. and Trusler, \{J. P.M.\}",

note = "Funding Information: We are indebted to Dr. Eric Lemmon, from the Physical and Chemical Properties Division of NIST-Boulder for providing us with considerable and valuable data for this work. Also, A. De Mendoza and J.F. Estela-Uribe thank The Instituto Colombiano para el Desarrollo de la Ciencia y la Tecnolog{\'ı}a, Colciencias, for financial support through Convenio Especial de Cooperaci{\'o}n no. 048-2001.",

year = "2004",

month = aug,

day = "15",

doi = "10.1016/j.fluid.2004.06.006",

language = "English",

volume = "222-223",

pages = "25--30",

journal = "Fluid Phase Equilibria",

issn = "0378-3812",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Combined Helmholtz energy, extended corresponding states and local-composition model for fluid mixtures

AU - Estela-Uribe, Jorge Francisco

AU - De Mendoza, A.

AU - Trusler, J. P.M.

N1 - Funding Information: We are indebted to Dr. Eric Lemmon, from the Physical and Chemical Properties Division of NIST-Boulder for providing us with considerable and valuable data for this work. Also, A. De Mendoza and J.F. Estela-Uribe thank The Instituto Colombiano para el Desarrollo de la Ciencia y la Tecnologı́a, Colciencias, for financial support through Convenio Especial de Cooperación no. 048-2001.

PY - 2004/8/15

Y1 - 2004/8/15

N2 - We present a thermodynamic model of mixtures in which the Helmholtz energy is computed from an extended corresponding states (ECS) method with a correction term. The ECS model is based upon the van der Waals one-fluid theory with pure-component shape factors represented as functions of reduced temperature and density. The correction term is given by a local-composition model with a coordination number taken from lattice gas theory. Densities and speeds of sound of binary mixtures were calculated with deviations within ±0.20%, while deviations in bubble-point pressures were within ±2% on average.

AB - We present a thermodynamic model of mixtures in which the Helmholtz energy is computed from an extended corresponding states (ECS) method with a correction term. The ECS model is based upon the van der Waals one-fluid theory with pure-component shape factors represented as functions of reduced temperature and density. The correction term is given by a local-composition model with a coordination number taken from lattice gas theory. Densities and speeds of sound of binary mixtures were calculated with deviations within ±0.20%, while deviations in bubble-point pressures were within ±2% on average.

KW - Binary mixtures

KW - Corresponding states

KW - Densities

KW - Helmholtz energy

KW - Speeds of sound

KW - Vapour pressures

UR - http://dx.doi.org/10.1016/j.fluid.2004.06.006

UR - https://www.researchgate.net/publication/242498173_Combined_Helmholtz_Energy_Extended_Corresponding_States_and_Local_Composition_Model_for_Fluid_Mixtures_1

U2 - 10.1016/j.fluid.2004.06.006

DO - 10.1016/j.fluid.2004.06.006

M3 - Article

AN - SCOPUS:4344672175

SN - 0378-3812

VL - 222-223

SP - 25

EP - 30

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

ER -

Combined Helmholtz energy, extended corresponding states and local-composition model for fluid mixtures

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this