International Journal of Thermophysics

, Volume 16, Issue 6, pp 1381–1392 | Cite as

Ideal-gas thermodynamic properties for natural-gas applications

  • M. Jaeschke
  • P. Schley


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 thecp0 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 selectedcp0 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.

Key words

caloric properties equation of state ideal gas isobaric heat capacity natural gas speed of sound 


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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • M. Jaeschke
    • 1
  • P. Schley
    • 2
  1. 1.Applied Physics SectionRuhrgas AGDorstenGermany
  2. 2.Ruhr-University of BochumBochumGermany

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