Prediction of the Inversion Curve and the Maximum Value of μJ–T for Some Refrigerants

Author: Keshavarzi E.   Parsafar G.   Najafi B.  

Publisher: Springer Publishing Company

ISSN: 0195-928X

Source: International Journal of Thermophysics, Vol.20, Iss.2, 1999-03, pp. : 651-663

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Abstract

In the present work, the thermodynamic states of the inversion curve have been obtained using only p–v–T data. We have also shown a linear relationship between compressibility factor and pressure for each branch of the inversion curve. These lines can be used to find the maximum inversion pressure, p{rm ^M_{in}}. Finally, we have predicted the temperature at which the Joule–Thomson coefficient, μJ–T, has its maximum value for each isobar, by using the specific heat capacity, isobaric expansivity, or compressibility factor.