A study of inversion curves

Juris, Kenneth; Wenzel, L. A.

doi:10.1002/aic.690180404

Cited by 33 publications

(14 citation statements)

References 9 publications

(1 reference statement)

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“…8, the calculated value of α(T r ) obtained from the vdW and RK EOSs are poorly fitted with the Soave formula, Eq. (15). However, as shown in Table V, the values of α(T r ) are well fitted with Eq.…”

Section: Temperature Dependence Of the Parameters Of An Eossupporting

confidence: 57%

“…Juris and Wenzel[15] compared the experimental JTIC with those calculated from the vdW, Deiters, Berthelot, RedlichKwong (RK), truncated virial (with the second and third virial coefficients taken from the Pitzer and Chueh-Prausnitz correlations), Su-Beattie -Bridgeman, several reduced forms of Benedict-Webb-Rubin, and Martin -Hou EOSs. Darwish and Al-Muhtaseb[16] calculated the JTIC using the modified PR by Melhem et al, Trebble-Bishno, and Jan-Tsai EOSs.…”

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confidence: 99%

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Deriving Analytical Expressions for the Ideal Curves and Using the Curves to Obtain the Temperature Dependence of Equation-of-State Parameters

Parsafar

Izanloo

2006

Int J Thermophys

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Different equations of state (EOSs) have been used to obtain analytical expressions for the ideal curves, namely, the Joule-Thomson inversion curve (JTIC), Boyle curve (BC), and Joule inversion curve (JIC). The selected EOSs are the Redlich-Kwong (RK), Soave-Redlich-Kwong (SRK), Deiters, linear isotherm regularity (LIR), modified LIR (MLIR), dense system equation of state (DSEOS), and van der Waals (vdW). Analytical expressions have been obtained for the JTIC and BC only by using the LIR, MLIR, and vdW equations of state. The expression obtained using the LIR is the simplest. The experimental data for the JTIC and the calculated points from the empirical EOSs for the BC are well fitted into the derived expression from the LIR, in such a way that the fitting on this expression is better than those on the empirical expressions given by Gunn et al. and Miller. No experimental data have been reported for the BC and JIC; therefore, the calculated curves from different EOSs have been compared with those calculated from the empirical equations. On the basis of the JTIC, an approach is given for obtaining the temperature dependence of an EOS parameter(s). Such an approach has been used to determine the temperature dependences of A 2 of the LIR, a and b parameters of the vdW, and the cohesion function of the RK. Such temperature dependences, obtained on the basis of the JTIC, have been found to be appropriate for other ideal curves as well.

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Section: Temperature Dependence Of the Parameters Of An Eossupporting

confidence: 57%

mentioning

confidence: 99%

Deriving Analytical Expressions for the Ideal Curves and Using the Curves to Obtain the Temperature Dependence of Equation-of-State Parameters

Parsafar

Izanloo

2006

Int J Thermophys

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“…Thus, extensive efforts are made to use EOS for predictions of the JT inversion curve. Examples for the use of cubic EOS are modified versions of Peng-Robinson [6,7], Redlich-Kwong [6,8], SoaveRedlich-Kwong [7], Patel-Teja [6] or other cubic EOS [9] with varying parameter functions. Both type of cubic EOS and type of parameter function strongly influence the JT inversion curve, particularly in the high temperature region.…”

Section: Introductionmentioning

confidence: 99%

Joule–Thomson inversion curves of mixtures by molecular simulation in comparison to advanced equations of state: Natural gas as an example

Vrabec

Kumar

Hasse

2007

Fluid Phase Equilibria

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“…Corner (1939) was one of the first to calculate inversion curves using equations of state. Many years later, calculations were continued by Miller (1970), Juris and Wenzel (1972), Dilay and Heidemann (1986), Geneã and Feroiu (1992), and Najjar et al (1993). Gunn et al (1966) derived a general correlation by a curve fit to experimental data.…”

Section: Calculation Of the Inversion Curvementioning

confidence: 99%

High Pressure Behavior of Hydrocarbons. Joule-Thomson Expansion of Gas Condensates

Kortekaas

Peters

Swaan-Arons

1998

Rev. Inst. Fr. Pét.

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Cet article prŽsente des calculs de lÕeffet dÕinversion de JouleThomson pour des gaz ˆ condensats ˆ haute tempŽrature et haute pression. La dŽtente isenthalpique a ŽtŽ modŽlisŽe pour plusieurs compositions de gaz ˆ condensats trouvŽes dans la littŽrature, en utilisant les Žquations dÕŽtat de Soave-Redlich-Kwong et de PengRobinson. Ces calculs confirment qualitativement le rŽchauffement des gaz ˆ condensat lors de la dŽtente. Bien que les tempŽratures de gisement se trouvent dans la rŽgion o• un refroidissement sÕobserve, cÕest-ˆ-dire ˆ lÕintŽrieur de la courbe dÕinversion, on a montrŽ que les pressions de gisement corrspondent ˆ lÕextŽrieur de cette rŽgion, de sorte que la tempŽrature augmente jusqu'ˆ ce que la courbe dÕinversion soit atteinte. Le rŽchauffement calculŽ nÕest pas tr•s important. Il est typiquement de 10 ˆ 30¡C pour des pressions de gisement de 1000 bar, la valeur exacte dŽpendant de la composition du fluide, des conditions de gisement et de la diminution de pression. Une Žtude de sensibilitŽ a montrŽ que la pression du gisement et la composition du fluide exercent une influence particuli•re sur le rŽchauffement. Si la pression du gaz ĉ ondensat ou sa teneur en constituants lourds sont ŽlevŽes, lÕeffet thermique possible est accru. Malheureusement, ces rŽsultats de calcul nÕont pas pu •tre validŽs par manque de donnŽes expŽrimentales. HIGH PRESSURE BEHAVIOR OF HYDROCARBONS J O U L E -T H O M S O N E X P A N S I O N O F G A S C O N D E N S A T E SThis paper presents calculations of Joule-Thomson inversion effects in high-pressure-high-temperature gas condensates. Isenthalpic expansions were modeled for several gas condensate mixtures reported in literature using the Soave-Redlich-Kwong and the Peng-Robinson equations of state. The calculations confirmed qualitatively the heating of gas condensates at expansion. Although reservoir temperatures are in the region where cooling occurs, i.e., inside the inversion curve, it was shown that reservoir pressures lie outside this region, and that the temperature will increase until the inversion curve is reached. The calculated temperature increases are not very large. Although exact values depend on fluid composition, reservoir conditions, and pressure drop, typical calculated temperature increases are in the range of 10-30¡C for reservoir pressures of 1000 bar. A sensitivity study showed that both reservoir pressure and fluid composition greatly affect the temperature increase. With increasing pressures and increasing amounts of heavy constituents present in gas

show abstract

A study of inversion curves

Cited by 33 publications

References 9 publications

Deriving Analytical Expressions for the Ideal Curves and Using the Curves to Obtain the Temperature Dependence of Equation-of-State Parameters

Deriving Analytical Expressions for the Ideal Curves and Using the Curves to Obtain the Temperature Dependence of Equation-of-State Parameters

Joule–Thomson inversion curves of mixtures by molecular simulation in comparison to advanced equations of state: Natural gas as an example

High Pressure Behavior of Hydrocarbons. Joule-Thomson Expansion of Gas Condensates

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