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  • 1
    Electronic Resource
    Electronic Resource
    Transport properties of 1,1,1,2-tetrafluoroethane (R134a) (1993)
    Springer
    International journal of thermophysics 14 (1993), S. 951-988 
    Details
    ISSN: 1572-9567
    Keywords: 1,1,1,2-tetrafluoroethane ; correlation ; critical region ; equation of state ; HFC-134a ; R134a ; thermal conductivity ; transport properties ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New equations for the thermal conductivity and the viscosity of R134a that are valid in a wide range of pressures and temperatures are presented. They were obtained through a theoretically based, critical evaluation of the available experimental data, which showed considerable inconsistencies between data sets, in particular in the vapor phase. In the critical region the observed enhancement in the thermal conductivity is well represented by a crossover model for the transport properties of fluids. Since thermodynamic properties enter into the calculation of the critical enhancement of the transport properties, a new fundamental equation for the critical region was developed also.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502117
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cubic equations of state for transport properties (1991)
    Springer
    International journal of thermophysics 12 (1991), S. 333-356 
    Details
    ISSN: 1572-9567
    Keywords: equation of state ; thermal conductivity ; transport equation of state ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A method is presented for the prediction of the background contribution of residual thermal conductivities and residual viscosities of nonpolar or slightly polar substances. The method is based on the concept of transport equations of state describing the transport properties in terms of pressure and temperature by pressure explicit equations similar to thermal equations of state. The transport equation of state is derived from a generalized cubic thermal equation of state and a universal function for the density dependence of the residual part of the transport properties. A comparison of calculated and recommended values of the thermal conductivity of 35 and the viscosity of 23 substances yields an absolute average deviation of 6% for the thermal conductivity and of 5% for the viscosity. The Maxwell condition is applied to the generalized transport equation of state to predict consistently the transport properties along the vapor-liquid coexistence curve.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00500756
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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