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EN ISO 20765-1:2018

Natural gas - Calculation of thermodynamic properties - Part 1: Gas phase properties for transmission and distribution applications (ISO 20765-1:2005) EN ISO 20765-1:2018

Publication date:   Dec 17, 2018

General information

60.60 Standard published   Sep 26, 2018

CEN

CEN/TC 238 Test gases, test pressures, appliance categories and gas appliance types

European Norm

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
EN ISO 20765-1:2018
60.60 Standard published
Sep 26, 2018

Relations

Adopted from ISO 20765-1:2005 IDENTICAL