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  • 1
    Electronic Resource
    Electronic Resource
    Capillary-Constant Correlations for Some New Refrigerants (1998)
    Springer
    International journal of thermophysics 19 (1998), S. 1473-1484 
    Details
    ISSN: 1572-9567
    Keywords: capillary constant ; refrigerants ; surface tension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper presents a method of evaluating the capillary constant of some new refrigerants, namely HFCs 32, 125, 134, 134a, 143a, and 152a; HCFCs 123, 123a, 124, 141b, and 142b in the liquid-vapor coexistence regions except within 2K from the critical point. The correlation is of the form a 2 =a 0 2 (1-Tr)0.92 where a 0 2 is obtained through the saturated-liquid density data. The calculated results show that the correlation is able to predict experimental data within 4% with a maximum absolute deviation less than 9%. A procedure to calculate the surface tension without the saturated vapor density data is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021991704406
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  • 2
    Electronic Resource
    Electronic Resource
    Saturated liquid viscosity correlations for alternative refrigerants (1996)
    Springer
    International journal of thermophysics 17 (1996), S. 361-372 
    Details
    ISSN: 1572-9567
    Keywords: ozone friendly ; refrigerants ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This article presents dimensionless equations for the temperature dependence of the saturated liquid viscosity of R32, R123 R124, R125, R134a. R141b. and R152a valid over a temperature range of engineering interest. The correlation has the form Φ n D =A +BT, where ΦD is the dimensionless fluidity (l ηD) andT D is a dimensionless temperature.n. A. andB are evaluated for each of the above refrigerants based on a least-squares fit to experimental data. This equation is found to provide an improved fit over those existing in the literature up toT D=0.8.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01443397
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