SYMPOSIA PAPER Published: 01 January 1983
STP29515S

Heating Values of Natural Gas and Its Components: Conversion of Values to Measurement Bases and Calculation of Mixtures

Source

The standard enthalpies of combustion of the pure hydrocarbons C1 to C6 at 298.15 K and 101.325 kPa, selected from the literature, with reference to a more detailed document, are used to derive heating values for the ideal gas and the real gas on molar, mass, and volumetric bases at five reference conditions, involving other temperatures and pressures. The values can be obtained at both dry and water-saturated conditions. The second virial coefficients and their first derivatives are used to calculate the effects of nonideality. Procedures are given and illustrated for calculating the heating values of mixtures from the composition, and the data are given for the pure compounds. The relationships between the quantities presented in the tables are illustrated by charts. A procedure is given for estimating the uncertainties of the calculated results.

Author Information

Armstrong, GT
National Bureau of Standards, Washington, D.C.
Jobe, TL
National Bureau of Standards, Washington, D.C.
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Details
Developed by Committee: D02
Pages: 314–334
DOI: 10.1520/STP29515S
ISBN-EB: 978-0-8031-4875-8
ISBN-13: 978-0-8031-0258-3