NF ISO 20765-2

NF ISO 20765-2

August 2015
Standard Cancelled

Natural gas - Calculation of thermodynamic properties - Part 2 : single-phase properties (gas, liquid, and dense fluid) for extended ranges of application

ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.

See more
View the extract
Main informations

Collections

National standards and national normative documents

Publication date

August 2015

Number of pages

66 p.

Reference

NF ISO 20765-2

ICS Codes

75.060   Natural gas

Classification index

X20-543-2

Print number

1

International kinship

ISO 20765-2:2015
Sumary
Natural gas - Calculation of thermodynamic properties - Part 2 : single-phase properties (gas, liquid, and dense fluid) for extended ranges of application

ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.

Standard replaced by (1)
NF EN ISO 20765-2
September 2018
Standard Current
Natural gas - Calculation of thermodynamic properties - Part 2 : single-phase properties (gas, liquid, and dense fluid) for extended ranges of application

ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Base thermodynamique de la méthode
  • 5 Méthode de calcul
  • 6 Plages d'application
  • 7 Incertitude de l'équation d'état
  • 8 Consignation des résultats dans un rapport
  • Annexe A Symboles et unités
  • Annexe B Énergie libre réduite de Helmholtz du gaz parfait
  • Annexe C Valeurs des paramètres critiques et des masses molaires des constituants purs
  • Annexe D Partie résiduelle de l'énergie libre réduite de Helmholtz
  • Annexe E Fonctions réductrices pour la masse volumique et la température
  • Annexe F Attribution des constituants à l'état de traces
  • Annexe G Exemples
  • Bibliographie
ZOOM ON ... the Requirements department
To comply with a standard, you need to quickly understand its issues in order to determine its impact on your activity.

The Requirements department helps you quickly locate within the normative text:
- mandatory clauses to satisfy,
- non-essential but useful clauses to know, such as permissions and recommendations.

The identification of these types of clauses is based on the document “ISO / IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents ”as well as on a constantly enriched list of verbal forms.

With Requirements, quickly access the main part of the normative text!

With Requirements, quickly access the main part of the normative text!
Need to identify, monitor and decipher standards?

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.

Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!

Request your free, no-obligation live demo

I discover COBAZ