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Ideal-gas thermodynamic properties for natural-gas applications

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Abstract

Calculating caloric properties from a thermal equation of state requires information such as isobaric heat capacities in the ideal-gas state as a function of temperature. In this work, values for the parameters of thec 0p correlation proposed by Aly and Lee were newly determined for 21 pure gases which are compounds of natural gas mixtures. The values of the parameters were adjusted to selectedc 0p data calculated from spectroscopic data for temperatures ranging from 10 to 1000 K. The data sources used are discussed and compared with literature data deduced from theoretic models and caloric measurements. The parameters presented will be applied in a current GERG project for evaluating equations of state (e.g., the AGA 8 equation) for their suitability for calculating caloric properties.

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Authors and Affiliations

  1. Applied Physics Section, Ruhrgas AG, Halterner Strasse 125, 46284, Dorsten, Germany

    M. Jaeschke

  2. Ruhr-University of Bochum, 44780, Bochum, Germany

    P. Schley

Authors
  1. M. Jaeschke
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  2. P. Schley
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Jaeschke, M., Schley, P. Ideal-gas thermodynamic properties for natural-gas applications. Int J Thermophys 16, 1381–1392 (1995). https://doi.org/10.1007/BF02083547

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