A new semiempirical equation of state for fluids—I

Deiters, Ulrich K.

doi:10.1016/0009-2509(81)85061-0

Cited by 100 publications

(23 citation statements)

References 20 publications

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“…For the van der Waals equation ( The Deiters [lo] equation (10) behaves similarly. In some publications the undesirable high-temperature behaviour of a( T ) has been avoided by setting u(T) = a, = const for temperatures above the critical.…”

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confidence: 99%

Guidelines for publication of equations of state I. Pure fluids (Technical Report)

Deiters

Reuck

1997

Pure and Applied Chemistry

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Republication or reproduction of this report or its storage and/or dissemination by electronic means is permitted without the need for formal IUPACpermission on condition that an acknowledgement, with full reference to thesource along with use of the copyright symbol 0, the name IUPAC and the year of publication are prominently visible, Publication of a translation into another language is subject to the additional condition of prior approval from the relevant IUPAC National Adhering Organization.

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confidence: 99%

Guidelines for publication of equations of state I. Pure fluids (Technical Report)

Deiters

Reuck

1997

Pure and Applied Chemistry

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“…The phase equilibrium data for this system have been interpreted using the Deiters (9) equation of state. This is a semiempirical equation based on the square-well potential model:…”

Section: Discussionmentioning

confidence: 99%

“…(9) The coefficients a 1 and a 2 are from Mansoori-Leland-Carnahan-Starling theory (an extension of CarnahanStarling theory to mixtures) and are given by…”

Section: Discussionmentioning

confidence: 99%

Thermodynamics of liquid (nitrogen + ethane)

Guedes

Zollweg

Filipe

et al. 2002

The Journal of Chemical Thermodynamics

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“…We have made similar investigations on some cubic equations of state, including the Peng-Robinson (PR) [9], Soave-Redlich-Kwong (SRK) [10], Yu-Lu (YL) [11], Deiters (D) [12,13], Patel-Teja (PT) [14], modified-Soave-Redlich-Kwong (MSRK) [15], Redlich-Kwong (RK) [16], and Soave-Peng-Robinson-Stryjek-Vera (SPRSV) [17]. The predicted T versus ρ on a Z = 1 contour given by these EOSs are compared with the experimental Zeno line in Fig.…”

Section: Ability Of Cubic Eoss To Predict the Zeno Linementioning

confidence: 99%

Analysis of Different EOSs in Predicting the Ideal Curve and Deriving the Temperature Dependencies of Their Parameters

Parsafar

Saydi

2004

International Journal of Thermophysics

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The regularity shown by different fluids along the contour of the ideal compressibility factor Z = P V /(RT ) = 1 in the temperature-density plane is used to test the accuracy of different equations of state and derive temperature dependencies of their parameters. For a wide range of pure fluids, this contour, known as the Zeno line, has been empirically observed to be nearly linear. The precision of the van der Waals (vdW) equation in predicting the Zeno line has been evaluated and shown that this equation predicts a linear relation between temperature and density on the Z = 1 contour, qualitatively. However, the line shows significant deviations from the experimental Zeno line. Experimental PVT data for CO 2 is used to obtain the temperature dependencies of the vdW parameters. The vdW equation with such temperature dependencies does not show a straight line for the Z = 1 contour. This means that the equation is not able to predict the Zeno line, both qualitatively and quantitatively. Also, the accuracy of the modified vdW equations in predicting the Zeno line has been investigated. It is shown that none of these equations can predict the Zeno line qualitatively. However, the predicted line on the Z = 1 contour given by some of these equations is near the experimental Zeno line. Assuming that the Zeno line must hold, the temperature dependence of the non-ideal thermal pressure, A , of the linear isotherm regularity as A = a + bT + c/T has been derived. Such a temperature dependence was confirmed by experimental data. The derived expression for A was used to obtain the temperature dependence of the thermal pressure coefficient, which is in accordance with experimental data. Also, the temperature dependencies of the parameters of the dense system equation of state

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A new semiempirical equation of state for fluids—I

Cited by 100 publications

References 20 publications

Guidelines for publication of equations of state I. Pure fluids (Technical Report)

Guidelines for publication of equations of state I. Pure fluids (Technical Report)

Thermodynamics of liquid (nitrogen + ethane)

Analysis of Different EOSs in Predicting the Ideal Curve and Deriving the Temperature Dependencies of Their Parameters

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