The thermal conductivity of ethane in the critical region

Mostert, R.; Berg, H. van den; Gulik, P. S. van der; Sengers, J. V.

doi:10.1063/1.458523

Cited by 60 publications

(74 citation statements)

References 17 publications

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“…Thus, it is possible to examine some of the available experimental data in the light of the most modern theory and to confirm the internal consistency of various sets of experimental data. Furthermore, in the zero-density limit and around the critical point, theoretical studies have suggested acceptable functional forms for the representation of experimental data [2,14]. In order to perform such an analysis one must make use of experimental data over as wide a range of thermodynamic states as possible.…”

Section: Q(p T) = Qo( T) + Aq( P T) + a Cq(p T)= ~(P T) + Z~q(pmentioning

confidence: 99%

See 1 more Smart Citation

The transport properties of ethane. I. Viscosity

Hendl

Millat²,

Vogel

et al. 1994

Int J Thermophys

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A new representation of the viscosity of ethane is presented. The representative equations are based upon a body of experimental data that have been critically assessed for internal consistency and for agreement with theory in the zerodensity limit, vapor phase, and critical region. The representation extends over the temperature range from 100 K to the critical temperature in the liquid phase and from 200 K to the critical temperature in the vapor phase. In the supercritical region, the temperature range extends to 1000 K for pressures up to 2 MPa and to 500 K for pressures up to 60 MPa. The ascribed accuracy of the representation varies according to the thermodynamic state from _+ 0.5 % for the viscosity of the dilute gas near room temperature to +3.0% for the viscosity at high pressures and temperatures. Tables of the viscosity, generated by the relevant equations, at selected temperatures and pressures and along the saturation line, are also provided.

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Section: Q(p T) = Qo( T) + Aq( P T) + a Cq(p T)= ~(P T) + Z~q(pmentioning

confidence: 99%

“…For this purpose Eq. (9) can be rewritten in terms of the first-density contribution and higher-density contributions, zlhr/, as A~l=blp+Ah~l=btp+ ~ bip i (14) i=2 …”

Section: Density Dependencementioning

confidence: 99%

The transport properties of ethane. I. Viscosity

Hendl

Millat²,

Vogel

et al. 1994

Int J Thermophys

Self Cite

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“…The transport properties of a pure fluid show an enhancement in the region of the critical point, which has been observed experimentally for a number of fluids [23][24][25]. Although for viscosity the critical enhancement is weak and covers a small region, the critical enhancement of the thermal conductivity is observed in a large range of temperatures and densities.…”

Section: Excess Transport Propertiesmentioning

confidence: 83%

On Correlating the Transport Properties of Supercritical Fluids

Vesovic

1994

Supercritical Fluids

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ABSTRACT. The methods for developing correlations of transport properties of supercritical fluids are discussed. The emphasis is on using the best available experimental data, selected on the basis of critical analysis of the methods of measurements and with guidance from the theory to produce accurate, consistent and theoretically sound representations of the viscosity and the thermal conductivity.

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“…This behavior can be described by models that produce a smooth crossover from the singular behavior of the thermal conductivity asymptotically close to the critical point to the residual values far away from the critical point [30,45,54]. The densitydependent terms for thermal conductivity can be grouped according to Eq.…”

Section: Residual Thermal Conductivitymentioning

confidence: 99%

“…The theoretically-based crossover model proposed by Olchowy and Sengers [30,45,54] is complex and requires the solution of a quartic equation in terms of complex variables. A simplified crossover model has also been proposed by Olchowy and Sengers [32].…”

Section: Critical Enhancementmentioning

confidence: 99%

Reference correlations for the viscosity and thermal conductivity of fluids over an extended range of conditions: hexane in the vapor, liquid, and supercritical regions (IUPAC Technical Report)

Perkins

Huber

Assael

et al. 2015

Pure and Applied Chemistry

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This article summarizes the correlation procedures developed for IUPAC Project 2012-040-1-100 [Reference correlations for the thermal conductivity and viscosity of fluids over extended range of conditions (vapor, liquid and supercritical regions)]. This project is focused on the development of wide-range reference correlations for the thermal conductivity and viscosity of fluids that incorporate as much theoretical knowledge of these properties as possible. The thermal conductivity and viscosity correlations developed here for pure fluids are functions of temperature and density. The best available equations of state for a given fluid are used to calculate the thermodynamic properties required for these correlations, often from measured temperatures and pressures. The correlation methodology developed during this project has been applied to hexane in this report but can be applied to any pure fluid with a reliable equation of state and reliable data for the thermal conductivity and viscosity over a significant range of temperatures and densities.

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The thermal conductivity of ethane in the critical region

Cited by 60 publications

References 17 publications

The transport properties of ethane. I. Viscosity

The transport properties of ethane. I. Viscosity

On Correlating the Transport Properties of Supercritical Fluids

Reference correlations for the viscosity and thermal conductivity of fluids over an extended range of conditions: hexane in the vapor, liquid, and supercritical regions (IUPAC Technical Report)

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