EVALUATION OF SECOND VIRIAL COEFFICIENTS AND ISOCHORIC INFLECTION LOCI FROM BURNETT - ISOCHORIC PVT MEASUREMENTS ON THE HYDROGEN - METHANE SYSTEM

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dc.creatorMAGEE, JOE WILTON, JR.en_US
dc.date.accessioned2007-05-09T19:33:10Zen_US
dc.date.available2007-05-09T19:33:10Zen_US
dc.date.issued1983en_US
dc.description.abstractMeasurement of the PVT relations of a 20.05 mol % hydrogen - 79.95 mol % methane mixture was conducted between 140 and 600 K with pressures to 72 MPa. The primary measurements were conducted along lines of constant density (isochores) with each isochore anchored to a series of Burnett isotherms at 273.150 K. The density of each isochore was calculated from the optimal virial expansion truncated after six terms and is shown to have an accuracy approaching 0.01% at high pressures. An investigation of the deviation of the compressibility factor from linearity along isochores showed that deviations are present at both high and low reduced temperatures. The high temperature deviations are negative but the sign of the low temperature deviations depends on density. Any deviations from linearity carry significant messages concerning the behavior of the second temperature derivative of the equation of state at constant density ((PAR-DIFF)('2)Z/(PAR-DIFF)(1/T)('2))(,p). Precise PVT data for pure hydrogen, pure methane, and a 20.05 mol % hydrogen-methane mixture were used to evaluate the isochoric inflection loci defined by ((PAR-DIFF)('2)Z/(PAR-DIFF)(1/T)('2))(,p) = 0. Hydrogen's locus has been shown to be "open" in contrast to methane's "closed" locus. The presence of hydrogen dominates the behavior of the binary mixture, as shown by its "open" isochoric inflection locus. Second and third virial coefficients of the 20.05 mol % hydrogen-methane mixture were evaluated for temperatures from 190 to 500 K. Second cross virial coefficients were calculated for temperatures from 273.15 K to 420 K for the hydrogen-methane system. A new empirical equation of state was derived and tested. The equation incorporates the behavior of second virial coefficients and deviations from linearity along isochores. It consists of a power series in both density and reciprocal temperature and permits analytical calculation of thermodynamic properties.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS CH.E. 1983 MAGEEen_US
dc.identifier.citationMAGEE, JOE WILTON, JR.. "EVALUATION OF SECOND VIRIAL COEFFICIENTS AND ISOCHORIC INFLECTION LOCI FROM BURNETT - ISOCHORIC PVT MEASUREMENTS ON THE HYDROGEN - METHANE SYSTEM." (1983) Diss., Rice University. <a href="https://hdl.handle.net/1911/15771">https://hdl.handle.net/1911/15771</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/15771en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectChemical engineeringen_US
dc.titleEVALUATION OF SECOND VIRIAL COEFFICIENTS AND ISOCHORIC INFLECTION LOCI FROM BURNETT - ISOCHORIC PVT MEASUREMENTS ON THE HYDROGEN - METHANE SYSTEMen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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