API MPMS 14.5 Calculation of Gross Heating Value, Relative Density and Compressibility Factor for Natural Gas Mixtures from Compositional Analysis

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API MPMS 14.5 Document Information:

Title
Calculation of Gross Heating Value, Relative Density and Compressibility Factor for Natural Gas Mixtures from Compositional Analysis

American Petroleum Institute

Publication Date:
Jan 1, 1996

Scope:

This standard presents procedures for calculating, at base conditions from composition, the following properties of natural gas mixtures: gross heating value, relative density (real and ideal), and compressibility factor. The effect of water upon these calculations is somewhat complicated. Because this document relates primarily to custody transfer, the water effect included is an acceptable contractual calculation. The Appendix of this standard contains a detailed investigation of the effect of water and detailed derivations of the equations presented in the standard.

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