Correlation and prediction of physical properties of hydrocarbons with the modified Peng-Robinson equation of state. 3. Thermal properties. A new significant characterizing parameter m

Rogalski, Marek; Carrier, Bruno; Peneloux, André

doi:10.1021/ie00055a030

Cited by 4 publications

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“…where a(T b ) is the value of the function a(T) at the normal boiling temperature (Appendix I). Functions f 1 -(m) and f 2 (m) are expressed in terms of two constants, C 1 and C 2 , which are characteristic of the function a(T) and in terms of the shape parameter m which is characteristic of each compound and has a similar role as the acentric factor (Rogalski et al, 1991). 13 The values of powers x and y were optimized to fit all the thermophysical properties considered in this work.…”

Section: Description Of the Thermodynamic Modelmentioning

confidence: 99%

Estimation of Thermophysical Properties of Heavy Hydrocarbons through a Group Contribution Based Equation of State

Coniglio

Trassy

Rauzy

2000

Ind. Eng. Chem. Res.

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This paper presents an improved version of a purely predictive thermodynamic model proposed previously by Coniglio et al. (Fluid Phase Equilib. 1993, 87, 53−88). The main feature of this model is to be based on a Peng−Robinson type equation of state with parameters determined through homogeneous group contribution methods. The new model estimates vapor pressures, saturated liquid densities, heats of vaporization, saturated liquid heat capacities, and speed of sound in saturated liquids of a large number of hydrocarbons within the experimental accuracy, from the triple point to 2 bar. The required inputs for each compound are the molecular structure and the experimental normal boiling point or at least one vapor pressure measurement. The applicability of the new model was verified through prediction of vapor pressures of non-hydrocarbon organic compounds (acids, esters, alcohols, ...). The obtained results confirm the reliability of the new model when extrapolating to non-hydrocarbon organic compounds.

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Section: Description Of the Thermodynamic Modelmentioning

confidence: 99%

Estimation of Thermophysical Properties of Heavy Hydrocarbons through a Group Contribution Based Equation of State

Coniglio

Trassy

Rauzy

2000

Ind. Eng. Chem. Res.

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“…Some of them (see for example refs − ) have examined the Joule−Thomson inversion and the ideal gas curves. Others (see for example refs − ) have considered properties such as the isochoric and the isobaric heat capacities, sound velocities, etc.…”

Section: Introductionmentioning

confidence: 99%

Generalized Cubic Equation of State Adjusted to the Virial Coefficients of Real Gases and Its Prediction of Auxiliary Thermodynamic Properties

Polishuk

2009

Ind. Eng. Chem. Res.

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This study demonstrates that the overall reliability of a simplest cubic equation of state (EOS) might be improved by developing its accuracy in estimating the virial coefficients. In particular, it has been demonstrated that the progress can be achieved in predicting the sound velocities and, probably, the Joule−Thomson inversion curves. At the same time, the limitations of the simplest model are evident. In particular, it fails in predicting of the virial coefficients in the low temperature range. As a result, its predictions of the liquid phase properties are still imperfect. Further directions of development of the proposed EOS are discussed.

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Heat capacity estimations using equations of state

Solimando¹,

Rogalski²,

Coniglio

1992

Thermochimica Acta

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Correlation and prediction of physical properties of hydrocarbons with the modified Peng-Robinson equation of state. 3. Thermal properties. A new significant characterizing parameter m

Cited by 4 publications

References 0 publications

Estimation of Thermophysical Properties of Heavy Hydrocarbons through a Group Contribution Based Equation of State

Estimation of Thermophysical Properties of Heavy Hydrocarbons through a Group Contribution Based Equation of State

Generalized Cubic Equation of State Adjusted to the Virial Coefficients of Real Gases and Its Prediction of Auxiliary Thermodynamic Properties

Heat capacity estimations using equations of state

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