000150663 001__ 150663
000150663 005__ 20251017144638.0
000150663 0247_ $$2doi$$a10.1016/j.ijhydene.2025.01.253
000150663 0248_ $$2sideral$$a142770
000150663 037__ $$aART-2025-142770
000150663 041__ $$aeng
000150663 100__ $$0(orcid)0000-0001-9446-8461$$aRemacha, P.$$uUniversidad de Zaragoza
000150663 245__ $$aImpact of hydrogen blending on the formation of flammable atmospheres in enclosed spaces due to gas leaks
000150663 260__ $$c2025
000150663 5060_ $$aAccess copy available to the general public$$fUnrestricted
000150663 5203_ $$aThis study addresses the potential impact of hydrogen addition to natural gas (NG) on the formation of flammable atmospheres due to small gas leaks. First, the effect of hydrogen blending on leak rate in realistic situations is estimated with an alternative flow model validated with experimental data for a wide range of gases and pressures on real and manufactured leaking coupons. Second, the temporal evolution of gas concentration in ventilated rooms and the time to reach flammable conditions is predicted for NG/hydrogen blends, showing that hydrogen addition leads to faster gas build-up. This may have practical consequences, for example, on required response times to attend emergency calls due to gas leakages. In general, hydrogen addition results in a faster formation of flammable atmospheres, but differences with respect to natural gas are less severe than expected from the usual ideal flow model, which tends to overestimate leak rates and may lead to a too conservative assessment of actual behaviors in most practical situations.
000150663 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000150663 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000150663 700__ $$aTizné, E.$$uUniversidad de Zaragoza
000150663 700__ $$aPina, A.
000150663 700__ $$0(orcid)0000-0002-0063-1318$$aBarroso, J.$$uUniversidad de Zaragoza
000150663 700__ $$0(orcid)0000-0003-1337-0310$$aMuelas, Á.$$uUniversidad de Zaragoza
000150663 700__ $$0(orcid)0000-0003-2863-4681$$aBallester, J.$$uUniversidad de Zaragoza
000150663 7102_ $$15001$$2600$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Mecánica de Fluidos
000150663 773__ $$g(2025), [12 pp.]$$pInt. j. hydrogen energy$$tInternational Journal of Hydrogen Energy$$x0360-3199
000150663 8564_ $$s730583$$uhttps://zaguan.unizar.es/record/150663/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-01-25
000150663 8564_ $$s1358955$$uhttps://zaguan.unizar.es/record/150663/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-01-25
000150663 909CO $$ooai:zaguan.unizar.es:150663$$particulos$$pdriver
000150663 951__ $$a2025-10-17-14:30:26
000150663 980__ $$aARTICLE