NEN-ISO 15971:2008 en

Aardgas - Meten van eigenschappen - Verbrandingswarmte en Wobbe index

  • Deze norm is ingetrokken sinds 01-04-2014

144,92 175,35 Incl BTW

Over deze norm

Status Ingetrokken
Aantal pagina's 50
Commissie Aardgas
Gepubliceerd op 01-12-2008
Taal Engels
This International Standard concerns the measurement of calorific value of natural gas and natural gas substitutes by non-separative methods, i.e. methods that do not involve the determination of the gas composition nor calculation from it. It describes the principles of operation of a variety of instruments in use for this purpose, and provides guidelines for the selection, evaluation, performance assessment, installation and operation of these. Calorific values can be expressed on a mass basis, a molar basis or, more commonly, a volume basis. The working range for superior calorific value of natural gas, on the volume basis, is usually between 30 MJ/m3 and 45 MJ/m3 at standard reference conditions (see ISO 13443). The corresponding range for the Wobbe index is usually between 40 MJ/m3 and 60 MJ/m3. This International Standard neither endorses nor disputes the claims of any commercial manufacturer for the performance of an instrument. Its central thesis is that fitness-for-purpose in any particular application (defined in terms of a set of specific operational requirements) can be assessed only by means of a well-designed programme of experimental tests. Guidelines are provided for the proper content of these tests.


ICS-code 75.060
Nederlandse titel Aardgas - Meten van eigenschappen - Verbrandingswarmte en Wobbe index
Engelse titel Natural gas - Measurement of properties - Calorific value and Wobbe index
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