Vapor pressures of 12 alkylcyclohexanes, cyclopentane, butylcyclopentane and trans-decahydronaphthalene down to 0.5 Pa. Experimental results, correlation and prediction by an equation of state

Mokbel, Ilham; Rauzy, Evelyne; Loiseleur, H.; Berro, Charles; José, Jacques

doi:10.1016/0378-3812(95)02707-l

Cited by 55 publications

(34 citation statements)

References 9 publications

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“…The final purity was confirmed by checking its vapour pressure, after degasification, at two temperatures. Deviations from literature values [29] were found to be 0.39% at 258.33 K and −0.21% at 277.17 K. The xenon used was from Linde Gas with 99.99% (mol/mol) minimum stated purity. The gas was used as received from the manufacturer.…”

Section: Methodsmentioning

confidence: 99%

On the behaviour of solutions of xenon in liquid cycloalkanes: Solubility of xenon in cyclopentane

Bonifácio¹,

Filipe²,

Ramos³

et al. 2011

Fluid Phase Equilibria

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a b s t r a c tThe solubility of xenon in liquid cyclopentane has been studied experimentally and theoretically. Measurements of the solubility of xenon in liquid cyclopentane are reported as a function of temperature from 254.60 K to 313.66 K. The imprecision of the experimental data is less than 0.3%. The thermodynamic functions of solvation of xenon in cyclopentane, such as the standard Gibbs energy, enthalpy, entropy and heat capacity of solvation, have been calculated from the temperature dependence of Henry's law coefficients. The results provide further information about the differences between the xenon + cycloalkanes and the xenon + n-alkane interactions. In particular, interaction enthalpies between xenon and CH 2 groups in nalkanes and cycloalkanes have been estimated and compared. Using a version of the soft-SAFT approach developed to model cyclic molecules, we were able to reproduce the experimental solubility for xenon in cyclopentane using simple Lorentz-Berthelot rules to describe the unlike interaction.

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Section: Methodsmentioning

confidence: 99%

On the behaviour of solutions of xenon in liquid cycloalkanes: Solubility of xenon in cyclopentane

Bonifácio¹,

Filipe²,

Ramos³

et al. 2011

Fluid Phase Equilibria

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“…In general, the PC-SAFT EoS is always expressed in terms of the parameters σ (segment diameter), ϵ/k (energy parameter), and m (chain length parameter). In the work of Frutiger et al [18], the uncertainties of the PC-SAFT parameters σ, ϵ/k, and m were obtained through fitting to collected experimental data for vapor pressure [22] over the temperature range of 230-350 K and saturated liquid densities [23] for a temperature range of 190-310 K using a Bootstrap method (see next section). The uncertainties in σ, ϵ/k and m were afterwards propagated through an ORC model system to obtain the uncertainty of the ORC model outputs (i.e., the net power output uncertainty).…”

Section: Formulation Of Eosmentioning

confidence: 99%

“…In the current study, uncertainties in the PR and SRK EoS parameters were obtained by fitting the EoS to experimental data and carrying out a bootstrap method to obtain the parameter distribution. Vapor pressures [22] over the temperature range of 230-350 K and saturated liquid densities [23] for a temperature range of 190-310 K of cyclopentane have been used. The key steps of the bootstrap methods are the following: 1. A reference parameter estimation is carried out using a non-linear least-squares method to obtain the first parameter estimates.…”

Section: Quantification Of Eos Parameter Uncertainty Using Bootstrap mentioning

confidence: 99%

Uncertainty assessment of equations of state with application to an organic Rankine cycle

et al. 2017

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Abstract:Evaluations of equations of state (EoS) with application to process systems should include uncertainty analysis. A generic method is presented for determining such uncertainties from both the mathematical form and the data for obtaining EoS parameter values. The method is implemented for the Soave-Redlich-Kwong (SRK), the Peng-Robinson (PR) cubic EoS, and the perturbed-chain statistical associating fluid theory (PC-SAFT) EoS, as applied to an organic Rankine cycle (ORC) power system to recover heat from the exhaust gas of a marine diesel engine with cyclopentane as the working fluid. Uncertainties of the EoS input parameters, including their corresponding correlation structure, are quantified from the data using a bootstrap method. A Monte Carlo procedure propagates parameter input uncertainties onto the process output. Regressions have been made of the three cubic EoS parameters from both critical point matching and vapor pressure and density data, as used for the three PC SAFT parameters. ORC power uncertainties of 2-5 % are found for all models from the larger data sets. Mean power values for the cubic EoS are similar for both parameter regressions. The mean power from the PC-SAFT EoS is less than for the cubic EoS, with no overlap of the uncertainty distributions.

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“…Several modifications have been made successively by N'Guimbi, (3) Kasehgari, (4) and Mokbel. (5) These improvements have extended the pressure and temperature ranges and improved the accuracy. The actual version allows vapour pressure measurements for pure components and mixtures in the range T = 203 K to T = 468 K and p = 0.1 Pa to p = 200 kPa.…”

Section: Methodsmentioning

confidence: 97%

Vapour pressure measurements and prediction for heavy esters

Bureau

José

Mokbel

et al. 2001

The Journal of Chemical Thermodynamics

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Vapor pressures of 12 alkylcyclohexanes, cyclopentane, butylcyclopentane and trans-decahydronaphthalene down to 0.5 Pa. Experimental results, correlation and prediction by an equation of state

Cited by 55 publications

References 9 publications

On the behaviour of solutions of xenon in liquid cycloalkanes: Solubility of xenon in cyclopentane

On the behaviour of solutions of xenon in liquid cycloalkanes: Solubility of xenon in cyclopentane

Uncertainty assessment of equations of state with application to an organic Rankine cycle

Vapour pressure measurements and prediction for heavy esters

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