Virial coefficients and equations of state for mixed fluids; application to CH4-H2O

Pitzer, Kenneth S.; Anderko, Andrzej; Sterner, S. Michael

doi:10.1016/0378-3812(92)85125-r

Virial coefficients and equations of state for mixed fluids; application to CH₄-H₂O

Conference · Fri Aug 10 04:00:00 EDT 2001 · Fluid Phase Equilibria

DOI:https://doi.org/10.1016/0378-3812(92)85125-r· OSTI ID:5564402

Pitzer, Kenneth S. ^[1]; Anderko, Andrzej ^[1]; Sterner, S. Michael ^[1]

Lawrence Berkeley Laboratory (LBL), Berkeley, CA (United States)

The statistical mechanics of both pure and mixed fluids yields expressions in terms of virial expansions. The composition dependencies of various virial coefficients are well established, as are the integrals expressing their values in terms of intermolecular potentials. These expressions are simple for the second virial coefficient but increase in complexity so rapidly for higher coefficients that it is not yet feasible to generate a complete equation of state from intermolecular potentials by this method. But it will be shown that these properties for the second, third, and fourth virial coefficients can be combined in a very useful manner with information from the complete equations of state for the component pure fluids to yield a form for the equation for the mixed fluid which maintains consistency with an of the pertinent principles and has a minimum number of parameters to be evaluated empirically. The system CH₄-H₂O is presented here as an example and other very recent applications are cited.

Research Organization:: Lawrence Berkeley Laboratory (LBL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

DOE Contract Number:: AC03-76SF00098

OSTI ID:: 5564402

Report Number(s):: LBL--30899; CONF-9106176--4; ON: DE91016248

Conference Information:: Journal Name: Fluid Phase Equilibria Journal Volume: 79

Country of Publication:: United States

Language:: English

References (12)

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Virial coefficients and equations of state for mixed fluids; application to CH4-H2O

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References (12)

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Virial coefficients and equations of state for mixed fluids; application to CH₄-H₂O