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ISO 20765-1:2005

Natural gas — Calculation of thermodynamic properties — Part 1: Gas phase properties for transmission and distribution applications

Publication date:   Sep 9, 2005

General information

90.93 Standard confirmed   Jun 22, 2021

ISO

ISO/TC 193/SC 1 Analysis of natural gas

International Standard

75.060   Natural gas

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Scope

This part of ISO 20765 specifies a method of calculation for the volumetric and caloric properties of natural gases, natural gases containing synthetic admixture and similar mixtures, at conditions where the mixture can exist only as a gas.
The method is applicable to pipeline-quality gases within the ranges of pressure and temperature at which transmission and distribution operations normally take place. For volumetric properties (compression factor and density), the uncertainty of calculation is about ± 0,1 % (95 % confidence interval). For caloric properties (for example enthalpy, heat capacity, Joule-Thomson coefficient, speed of sound), the uncertainty of calculation is usually greater.

Life cycle

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PUBLISHED
ISO 20765-1:2005
90.93 Standard confirmed
Jun 22, 2021