Constructing a single equation of state for gas and liquid by the method of minimizing the sum of squares of the relative deviations

Grigor'ev, B. A.; Плотников, С.А.; Kurumov, D. S.

doi:10.1007/bf00826714

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“…The equation agrees most with the data of Chirico et al 85 above 350 K. This trend is similar to that for the other fluids, and gives better confidence in the fit at the higher temperatures. Figure 12 presents comparisons of single-phase densities calculated with the equation of state to experimental data; the equation represents the data of Chang and Lee, 92 Garg et al, 60 Grigor'ev et al, 91 and Caudwell 90 generally within 0.1%. The data of Chang et al 93 show a þ0.15% systematic deviation, and the data of Et-Tahir et al 62 systematically deviate by À0.1%.…”

Section: Equation Of State For M-xylenementioning

confidence: 95%

Thermodynamic Properties ofo-Xylene,m-Xylene,p-Xylene, and Ethylbenzene

Lemmon

2012

Journal of Physical and Chemical Reference Data

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Equations of state for the xylene isomers (o-xylene, m-xylene, and p-xylene) and ethylbenzene have been developed with the use of the Helmholtz energy as the fundamental property with independent variables of density and temperature. The general uncertainties of the equations of state are 0.5% in vapor pressure above the normal boiling point, and increase as the temperature decreases due to a lack of experimental data. The uncertainties in density range from 0.1% in the liquid region to 1.0% elsewhere (the critical and vaporphase regions). The uncertainties in properties related to energy (such as heat capacity and sound speed) are estimated to be 1.0%. In the critical region, the uncertainties are higher for all properties. The behavior of the equations of state is reasonable within the region of validity and at higher and lower temperatures and pressures. Detailed analyses between the equations and experimental data are reported.

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Section: Equation Of State For M-xylenementioning

confidence: 95%

Thermodynamic Properties ofo-Xylene,m-Xylene,p-Xylene, and Ethylbenzene

Lemmon

2012

Journal of Physical and Chemical Reference Data

View full text Add to dashboard Cite

show abstract

Constructing a single equation of state for gas and liquid by the method of minimizing the sum of squares of the relative deviations

Cited by 1 publication

References 2 publications

Thermodynamic Properties ofo-Xylene,m-Xylene,p-Xylene, and Ethylbenzene

Thermodynamic Properties ofo-Xylene,m-Xylene,p-Xylene, and Ethylbenzene

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