1 Scope
This standard specifies terms and definitions, classification and technical requirements, calculation method and requirements of property indexes of city gas, and test gas of civil gas burning appliances.
This standard is applicable to classification of various gases used as city fuel.
2 Normative References
The following standard contains provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents applies. For undated reference, its latest edition applies.
GB/T 11062 Natural Gas-Calculation of Calorific Values, Density, Relative Density and Wobbe Index from Composition (GB/T 11062-1998, neq ISO 6976: 1995)
3 Terms and Definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
city gas; town gas
publicly-used gas which meets the quality requirements of gas in standards and is used as fuel supplied for residents' living, commercial (public buildings) and industrial enterprise production, generally including natural gas, liquefied petroleum gas and manufactured gas.
3.2
Wobbe number; Wobbe index
ratio of the heat value of gas and the square root of relative density of gas
3.3
combustion potential
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification and Technical Requirements of City Gas
Annex A (Normative) Various Single Gases Used for Test Gas Preparation
Annex B (Normative) Property Values of Various Single Gases Used for Test Gas Preparation
Annex C (Informative) Comparison between This Standard and BS EN 437:1994 and EN 30-1-1:1999
