SIST EN ISO 6976:2017

Oznaka standarda: SIST EN ISO 6976:2017
Koda projekta: 00238011
Organizacija: SIST
Naslov (angleški): Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)
Naslov (slovenski): Zemeljski plin - Izračun kalorične vrednosti, gostote, relativne gostote in Wobbejevega indeksa iz sestave (ISO 6976:2016)
Če kupite standardizacijski dokument v .pdf formatu prek spletne prodaje, vam nudimo 20% popust pri spodnji ceni brez DDV. Cenik SIST
Dokumenti
Ime Jezik Status Cena Dodaj v košarico
SIST EN ISO 6976:2017 angleški jezik Active SIST-K: 84.00 EUR
PDF
Papir
Tehnični odbor: DPL - Oskrba s plinom
ICS: 75.060
Status: Objavljen
Objavljen: 01-mar-2017
Refer. št. objave: Sporocila 2017-03
Področje projekta (angleško): This International Standard specifies methods for the calculation of gross calorific value, net calorific value, density, relative density, ross 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. The methods specified provide the means of calculating the properties of the gas mixture at commonly used reference conditions. For the purpose of this International Standard the input mole fractions shall sum to unity exactly. Guidance on the achievement of this requirement is available in ISO 6974-1 and ISO 6974-2. All components with mole fractions greater than 0,000 05 shall be accounted for. If the composition of the gas is known by volume fractions, these shall first be converted to mole fractions in accordance with ISO 14912 (subclause 5.1.2). Note, however, that these derived mole fractions will have uncertainties greater than those of the original volume fractions. The methods of calculation require values for various physical properties of the pure components; these values, together with associated uncertainties, are provided in tables and their sources are identified. Methods are given for estimating the uncertainties of calculated properties. The methods of calculation of the values of properties on either a molar, mass or volumetric basis are applicable to any natural gas, natural gas substitute or other combustible fuel that is normally gaseous, except that for properties on the volumetric basis the method is restricted to mixtures for which the compression factor at reference conditions is greater than 0,9. Example calculations are given in annex D for the recommended methods of calculation.
Povezava na standarde
Povezava Ime Datum
Nadomešča SIST EN ISO 6976:2005 - Zemeljski plin – Izračun kaloričnih vrednosti, gostote, relativne gostote in Wobbejevega indeksa iz kompozicije (ISO 6976:1995 vključujoč Popravek 2:1997 in Popravek 3:1999) 01-mar-2017


• Slovenski standardi SIST s cenovnim razredom AC so popravki standardov in so v večini primerov brezplačni.

• Slovenski standardi SIST s cenovnim razredom AP so privzeti tuji standardi, katerih sestavni del je izvirni standard, ki ga moramo pridobiti pri izdajatelju v tujini. Naročilo pošljite na: prodaja@sist.si.

Najbolje prodajani standardi