An Extended Corresponding States Model For Predicting Thermodynamic Properties of the N2-Ar-O2 Mixture

Clarke, W. P.; Jacobsen, R. T.; Beyerlein, Steven; Penoncello, Steven G.

doi:10.1016/0378-3812(93)87097-k

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…The method outlined here is the standard one-fluid ECS theory for mixtures. Some authors have used the slightly different, but equivalent, approach of mixture shape factors [11]. Although we do not develop any further this alternative method, expressions for mixture shape factors can be derived directly from the ECS formalism, Eqs.…”

Section: Theorymentioning

confidence: 99%

“…The corresponding states conditions are solved by applying Eqs. (3), (4) and (7)- (11) to yield Φ res x of Eq. (6).…”

Section: Ecs Modelmentioning

confidence: 99%

“…Mollerup and Rowlinson [7] and Mollerup [8] extended the application of ECS models to liquefied natural gas (LNG). During the 1980s and the early 1990s, ECS models were developed for LNG by McCarty [9], for alternative refrigerants by Huber and Ely [10] and for air and (N 2 + Ar + O 2 ) by Clarke et al [11].…”

Section: Introductionmentioning

confidence: 99%

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Extended corresponding states model for fluids and fluid mixtures

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Section: Theorymentioning

confidence: 99%

“…The corresponding states conditions are solved by applying Eqs. (3), (4) and (7)- (11) to yield Φ res x of Eq. (6).…”

Section: Ecs Modelmentioning

confidence: 99%

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Extended corresponding states model for fluids and fluid mixtures

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2004

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An extended corresponding-states model for predicting thermodynamic properties of N2-Ar-O2 mixtures including vapor-liquid equilibrium

et al. 1994

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A formulation developed previously for the prediction of the thermodynamic properties of single-phase states of binary and ternary mixtures in the nitrogen-argon-oxygen system has been revised to include the calculation of vapor-liquid equilibrium IVLEJ properties. The model is based on the theory of extended corresponding states with wm der Waals mixing rules. Binary interaction parameters have been determined with single-phase P-p-T and vaporliquid equilibrium data to improve the accuracy of thermodynamic property predictions. The model accurately represents single-phase and vapor-liquid equilibrium properties over a wide range of compositions for binary and ternary mixtures. Comparisons of calculated properties to selected mixture data for both single-phase and VLE states are included.KEY WORDS: binary interaction parameters: extended corresponding states: shape factors: single-phase P-p-T; vapor-liquid equilibrium. !. INTRODUCTIONThe need for an accurate wide-range model for predicting thermodynamic properties of fluid mixtures has been well established. Because there is a significant quantity of measured property data for binary and ternary mixtures of nitrogen, argon, and oxygen, these systems may be used for testing methods of property calculation. EXTENDED CORRESPONDING-STATES (ECS) MODEL FOR MIXTURESThe equations of state used in this work for calculation of pure-fluid properties are those of Jacobsen et al. [5] for nitrogen, Schmidt and Wagner [6] for oxygen, and Stewart and Jacobsen [7] for argon. The model used in this research is described in detail by Clarke where ~ is the residual Helmholtz energy, Z is the compressibility factor, 6 = (p/p~)is the reduced density, r = (TJT)is the reciprocal reduced temperature, the subscript c indicates a critical property, the subscript o refers to the reference fluid, and the subscript m refers to the mixture. The symbols ~,, and 0.,, are shape factors which are used to relate the reduced properties of the mixture to those of the reference fluid. The thermodynamic properties for the mixture are reduced by the parameters, p .... and T~ .... which are given by t,c., = ZZ j ~. xt, x,, T~t,,,/pcp,, P q Tern :Z Z p q where p and q are indices which refer to different mixture components. Corresponding States for Properties of Nz-Ar-O z Mixtures 1291In Eqs. (3) and (4) The shape factors ¢., and 0., for the mixture are given byP qOn,= Z ~.\ ',,.\',,Ol,,,;[~;,,! (8) P qThe combining rules for the calculation of ¢,,,, and 0,,,, are given by ~1;,,1 = at,q + --( 11 ) T m dp,, ~r,, = ce,, 4---

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Extended corresponding states model for fluids and fluid mixtures

Estela-Uribe

Trusler

2003

Fluid Phase Equilibria

View full text Add to dashboard Cite

An Extended Corresponding States Model For Predicting Thermodynamic Properties of the N2-Ar-O2 Mixture

Cited by 4 publications

References 23 publications

Extended corresponding states model for fluids and fluid mixtures

Extended corresponding states model for fluids and fluid mixtures

An extended corresponding-states model for predicting thermodynamic properties of N2-Ar-O2 mixtures including vapor-liquid equilibrium

Extended corresponding states model for fluids and fluid mixtures

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