VIRIAL COEFFICIENTS BASED ON GASEOUS PVT-MEASUREMENTS NEAR SATURATION FOR BINARY MIXTURE SYSTEM
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Accession number;07A0043229
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| Title;VIRIAL COEFFICIENTS BASED ON GASEOUS PVT-MEASUREMENTS NEAR SATURATION FOR BINARY MIXTURE SYSTEM |
| Author;
MUKOBAYASHI MITSURU
(Keio Univ., Graduate School, JPN)
ICHIKURA KENGO
(Keio Univ., Graduate School, JPN)
SATO HARUKI
(Keio Univ., Faculty of Sci. and Technol., JPN)
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Journal Title;Thermophys Prop
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Journal Code:X0031A
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ISSN:0911-1743
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VOL.27th;NO.;PAGE.80-82(2006)
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| Figure&Table&Reference;FIG.4, REF.14 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;For reliable derivation of thermodynamic properties in gaseous phase from thermodynamic equation of state, our group has continuously pointed it out that third virial coefficient has influence on the thermodynamic properties near saturation. On the other hand, the correct quantitative third virial coefficient is not available. Our group has already confirmed that the determination of virial coefficients using the intermolecular-potential model is effective for R143a, R32 and R125. For the purpose of developing the thermodynamic model that can be determined from few measurements, and calculate the reliable thermophysical property value, we tried to develop the new virial equations of state for mixtures using intermolecular potential. During the development of the virial equations of state for R32/125, we performed examinations from various viewpoints for the determination of the virial coefficients of R32 and R125 based on gaseous PVT measurements near saturation. The virial coefficients we determined are confirmed the reliability by quantitative and qualitative examinations. And we precisely measured PVTx-measurements for R32/R125 with a magnetic suspension densitometer. We developed the virial equation of state for R32/R125 using intermolecular potential based on only our PVTx-measurements The virial equation of state can represent thermodynamic property measurements including density and speed of sound with high accuracy in the gaseous phase where no our measurements are available. (author abst.) |
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