Thermophysical Properties of Fluids. II. Methane, Ethane, Propane, Isobutane, and Normal Butane

Younglove, B. A.; Ely, James F.

doi:10.1063/1.555785

Cited by 696 publications

(439 citation statements)

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“…2 (data of this study and [5,7,8] along with the thermal conductivities of the liquid phases of these compounds measured immediately after melting [5,14]. Data for ethane, propane and hexane correspond to zero pressure; thermal conductivity of "odd" n-alkanes with n = 9-19 was studied at constant pressure 30 MPa.…”

Section: Resultsmentioning

confidence: 99%

Isochoric thermal conductivity of solid n-alkanes: Hexane C6H14

Konstantinov

Revyakin

Sagan

2011

Low Temperature Physics

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The isochoric thermal conductivity of solid n-hexane C 6 H 14 has been investigated on three samples of different density in the temperature interval from 100 K to the onset of melting. In all the cases the isochoric thermal conductivity varied following a dependence which is weaker than Λ ∝ 1/Т. The results obtained are compared with the thermal conductivities of other representatives of n-alkanes. The contributions of low-frequency phonons and "diffuse modes" to the thermal conductivity are calculated.

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Section: Resultsmentioning

confidence: 99%

Isochoric thermal conductivity of solid n-alkanes: Hexane C6H14

Konstantinov

Revyakin

Sagan

2011

Low Temperature Physics

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“…Most modern wide-range, high-accuracy equations of state for pure fluid properties are fundamental equations explicit in the Helmholtz energy as a function of density and temperature. All single-phase thermodynamic properties can be calculated as derivatives of the Helmholtz energy [9][10][11][12][13][14][15].…”

Section: Experimental Basis Of the New Equation Of Statementioning

confidence: 99%

“…The other work is an expression which is known as thermal pressure coefficient of dense fluids (Ar, N 2 , CO, CH 4 , C 2 H 6 , n-C 4 H 10 , iso-C 4 H 10 , C 6 H 6 , and C 6 H 5 -CH 3 ) [9][10][11][12][13][14][15]. Only, pVT experimental data have been used for the calculation of thermal pressure coefficients [16].…”

Section: Introductionmentioning

confidence: 99%

Calculation of Thermal Pressure Coefficient of Lithium Fluid by pVT Data

Moeini

2012

ISRN Physical Chemistry

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For thermodynamic performance to be optimized, particular attention must be paid to the fluid's thermal pressure coefficients and thermodynamics properties. A new analytical expression based on the statistical mechanics is derived for thermal pressure coefficients of dense fluids using the intermolecular forces theory to be valid for liquid lithium as well. The results are used to predict the parameters of some binary mixtures at different compositions and temperatures metal-nonmetal lithium fluid which agreement with experimental data. In this paper, we have used newly presented parameters of analytical expressions based on the statistical mechanics and predicted the metal-nonmetal transition for liquid lithium. The repulsion term of the effective pair potential for lithium shows well depth at 1600 K, and the position of well depth maximum is in agreement with X-ray diffraction and small-angle X-ray scattering.

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“…These include F 1 , the number density of the solvent, κ T , the isothermal compressibility, , the correlation length of density fluctuations, γ ≡ C p /C v , the ratio of specific heats, and η, the viscosity. Very accurate equations of state for ethane [57][58][59] and CO 2 59 are available that provide the input information. The necessary input parameters for fluoroform were obtained by combining information from a variety of sources.…”

Section: Theory Of T 1 Density Dependencementioning

confidence: 99%

Vibrational Lifetimes and Spectral Shifts in Supercritical Fluids as a Function of Density: Experiments and Theory

et al. 2000

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Vibrational lifetime and spectral shift data for the asymmetric CO stretching mode of W(CO) 6 in supercritical ethane, carbon dioxide, and fluoroform as a function of density at two temperatures are presented, and the lifetime (T 1 ) measurements are compared to theory. The data and theory are refinements of previous work. Measurements at zero density allow the contribution from solute-solvent interactions to be separated from strictly intramolecular contributions to T 1 . The results in the polyatomic SCFs are compared to data in Ar. The density functional/thermodynamic theory 1 has been extended to include contributions at large wavevector (k). Very good, quantitative agreement between theory and data taken in ethane and fluoroform is achieved, but the agreement for data taken in carbon dioxide, while reasonable, is not as good. The theory uses a variety of input information on the SCF properties obtained from the fluids' equations of state and other tabulated thermodynamic data. The solute-solvent spatial distribution is described in terms of hard spheres. The theory is able to reproduce the data without solute-solvent attractive interactions or clustering in the calculation of the spatial distribution.

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Thermophysical Properties of Fluids. II. Methane, Ethane, Propane, Isobutane, and Normal Butane

Cited by 696 publications

References 0 publications

Isochoric thermal conductivity of solid n-alkanes: Hexane C6H14

Isochoric thermal conductivity of solid n-alkanes: Hexane C6H14

Calculation of Thermal Pressure Coefficient of Lithium Fluid by pVT Data

Vibrational Lifetimes and Spectral Shifts in Supercritical Fluids as a Function of Density: Experiments and Theory

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