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I.S. EN ISO 6976:2016

Current
Current

The latest, up-to-date edition.

NATURAL GAS - CALCULATION OF CALORIFIC VALUES, DENSITY, RELATIVE DENSITY AND WOBBE INDICES FROM COMPOSITION (ISO 6976:2016)
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2016

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

National Foreword
European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Principles
6 Behaviour of ideal and real gases
7 Calculation of calorific value on a molar basis
8 Calculation of calorific value on a mass basis
9 Calculation of calorific value on a volume basis
10 Calculation of associated properties
11 Uncertainty of calculation
12 Tables of data
Annex A (normative) - Values of auxiliary constants
Annex B (normative) - Formulae for uncertainty calculations
Annex C (informative) - Conversion factors
Annex D (informative) - Example calculations
Bibliography

Describes methods for the calculation of gross calorific value, net calorific value, density, relative density, gross Wobbe index and net Wobbe index of natural gases, natural gas substitutes and other combustible gaseous fuels, when the composition of the gas by mole fraction is known.

DocumentType
Standard
Pages
74
PublisherName
National Standards Authority of Ireland
Status
Current
Supersedes

I.S. 329:2015 GAS DISTRIBUTION MAINS (EDITION 3)

ISO 6974-2:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 14912:2003 Gas analysis — Conversion of gas mixture composition data
ISO 80000-1:2009 Quantities and units — Part 1: General
ISO 6974-1:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition
ISO 20765-2:2015 Natural gas Calculation of thermodynamic properties Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application
ISO/TR 29922:2017 Natural gas Supporting information on the calculation of physical properties according to ISO 6976
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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