NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 1: GAS PHASE PROPERTIES FOR TRANSMISSION AND DISTRIBUTION APPLICATIONS

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2005

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Thermodynamic basis of the method
  4.1 Principle
  4.2 The fundamental equation of Helmholtz free energy
  4.3 Thermodynamic properties derived from the Helmholtz
      free energy
5 Method of calculation
  5.1 Input variables
  5.2 Conversion from pressure to reduced density
  5.3 Implementation
6 Ranges of application
  6.1 Pressure and temperature
  6.2 Pipeline quality gas
7 Uncertainty
  7.1 Uncertainty for pipeline quality gas
  7.2 Impact of uncertainties of input variables
8 Reporting of results
Annex A (normative) - Symbols and units
Annex B (normative) - The Helmholtz free energy of the
        ideal gas
Annex C (normative) - The equation for the Helmholtz free
        energy
Annex D (normative) - Detailed documentation for the
        equation of state
Annex E (informative) - Assignment of trace components
Annex F (informative) - Implementation of the method
Annex G (informative) - Examples
Bibliography

Describes 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.

Committee	PTI/15
DevelopmentNote	Issue date: 28/02/2009. Supersedes 04/30055562 DC. (03/2009)
DocumentType	Standard
Pages	54
PublisherName	British Standards Institution
Status	Current
Supersedes	04/30055562 DC : DRAFT APR 2004

Standards	Relationship
ISO 20765-1:2005	Identical

BS 8452:2010	Use of clamp-on (externally mounted) ultrasonic flow-metering techniques for fluid applications. Guide
BS 7965:2013	Guide to the selection, installation, operation and calibration of diagonal path transit time ultrasonic flowmeters for industrial gas applications
13/30268440 DC : 0	BS 7965 - GUIDE TO THE SELECTION, INSTALLATION, OPERATION AND CALIBRATION OF DIAGONAL PATH TRANSIT TIME ULTRASONIC FLOWMETERS FOR INDUSTRIAL GAS APPLICATIONS

ISO 6976:2016	Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
ISO 14532:2014	Natural gas — Vocabulary
ISO 7504:2015	Gas analysis Vocabulary
ISO 12213-2:2006	Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis

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BS ISO 20765-1 : 2005

Current

Table of Contents

Abstract

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