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  • 1
    Electronic Resource
    Electronic Resource
    Estimating the virial coefficients of small polar molecules (1994)
    Springer
    International journal of thermophysics 15 (1994), S. 461-482 
    Details
    ISSN: 1572-9567
    Keywords: density ; PVT ; polar molecules ; refrigerants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We adapt existing models for estimating the second and third virial coefficients of small molecules to the halogenated methanes and ethanes. We compare the results with the abundant new, high-qualityPVT data resulting from the search for alternative refrigerants. The present model provides an accurate method for calculating densities, and therefore it should provide reliable thermodynamic properties and fugacity coefficients. We give equations and parameters useful for estimating the properties of pure refrigerants and their mixtures when noPVT data are available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01563708
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  • 2
    Electronic Resource
    Electronic Resource
    Vapor pressures and gas-phasePVT data for 1-Chloro-1,2,2,2-tetrafluoroethane (R124) (1994)
    Springer
    International journal of thermophysics 15 (1994), S. 443-460 
    Details
    ISSN: 1572-9567
    Keywords: 1-Chloro-1,2,2,2-tetrafluoroethane ; density ; gas-phasePVT ; refrigerant R 124 ; saturated vapor density ; vapor pressures ; virial coefficients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present new data for the vapor pressure andPVT surface of 1-chloro-1,2,2,2-lelralluoroethane (designated R124 by the refrigeration industry) in the temperature range 278–423 K. ThePVT data are for the gas phase at densities up to 1.5 times the critical density. Correlating equations are given for the vapor pressures from 220 K to the critical temperature, 395.43 K, and for thePVT surface at densities up to 2 mol · L−1 (approximately 0.5 times the critical density). Second and third virial coefficients have been derived from thePVT measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01563707
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  • 3
    Electronic Resource
    Electronic Resource
    Vapor pressures and gas-phase PVT data for 1,1,1,2-tetrafluoroethane (1989)
    Springer
    International journal of thermophysics 10 (1989), S. 617-627 
    Details
    ISSN: 1572-9567
    Keywords: chlorofluorocarbons ; density ; PVT ; refrigerants ; saturated vapor ; vapor pressure ; virial equation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present new data for the vapor pressure and PVT surface of 1,1,1,2-tetrafluoroethane (Refrigerant 134a) in the temperature range 40° C (313 K) to 150° C (423 K). The PVT data are for the gas phase at densities up to one-half critical. Densities of the saturated vapor are derived at five temperatures from the intersections of the experimental isochores with the vapor pressure curve. The data are represented analytically in order to demonstrate experimental precision and to facilitate calculation of thermodynamic properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00507983
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