| Standardization field | Construction
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| Technical committee | BAS/TC 37- Fire safety in buildings |
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| Term (EN) | volume fraction |
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| Definition (EN) | 〈gas in a gas mixture〉 ratio of
- the volume that the gas alone would occupy at a defined temperature and pressure, to:
- the volume occupied by the gas mixture at the same temperature and pressure
NOTE 1 The concentration (4.52) of a gas at a temperature, T, and a pressure, P, can be calculated from its volume fraction (assuming ideal gas behaviour) by multiplying the volume fraction by the density of the gas at that temperature and pressure.
NOTE 2 Unless stated otherwise, a temperature of 298 K and a pressure of 1 atm are assumed.
NOTE 3 The volume fraction is dimensionless and is usually expressed in terms of microlitres per litre (μL/L), which is equivalent to cm3/m3 or 10−6), or as a percentage. |
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| Term (FR) | |
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| Definition (FR) | |
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| Term (DE) | |
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| Definition (DE) | |
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| Term (BS) | zapreminski udio |
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| Definition (BS) | 〈gas ili smjesa gasova〉 omjer između
- zapremine koju bi sam gas zauzimao na definisanoj temperaturi i pritisku i:
- zapremine koju zauzima smjesa gasova na istoj temperaturi i pritisku
NAPOMENA 1 Koncentracija (4.52) gasa na temperaturi, T, i pritisku, P, može se izračunati iz njegovog zapreminskog udjela (pretpostavljajući da se ponaša kao idealni gas) množenjem zapreminskog udjela s gustinom gasa na toj temperaturi i pritisku.
NAPOMENA 2 Ukoliko nije drugačije naglašeno, podrazumijeva se temperatura od 298 K i pritisak od 1 atm.
NAPOMENA 3 Zapreminski udio je bezdimenzionalna veličina i obično se izražava kao mikrolitar po litru (μL/L), što je ekvivalentno cm3/m3 ili 10−6), ili kao procent. |
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| Term (HR) | |
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| Definition (HR) | |
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| Term (SR) | |
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| Definition (SR) | |
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| Date | 2016-05-17 |
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| Standards | BAS EN ISO 13943:2015 |
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