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Dibromomethane as Promising Gaseous Fire Extinguishing Substance with Short Atmospheric Lifetime

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dc.contributor.authorKopylov, P. S.
dc.contributor.authorEltyshev, I. P.
dc.contributor.authorKopylov, N. P.
dc.contributor.authorBegishev, I. R.
dc.contributor.authorKopylov, S. N.
dc.contributor.authorКопылов, Сергей Николаевич
dc.date.accessioned2024-11-29T12:29:02Z
dc.date.available2024-11-29T12:29:02Z
dc.date.issued2021
dc.description.abstract© Published under licence by IOP Publishing Ltd.Calculation of dibromomethane atmospheric lifetime is carried out, as well as an experimental assessment of its fire extinguishing efficiency. Calculations show that methylene bromide atmospheric lifetime is 15.8 days so it rapidly decomposes in the troposphere. The main mechanisms of the removal of CH2Br2 from the atmosphere are its reaction with hydroxyl radicals and the processes of physical removal from the atmosphere. Special experimental equipment allowing to measure fire extinguishing concentration of gaseous fire suppressant having high boiling point is described. Experimentally measured minimum extinguishing concentration of methylene bromide for n-heptane is 2.5 % vol. According to this, CH2Br2 is close to the most effective gaseous fire extinguishing agents, such as C3F7I and C2F4Br2. LOAEL value for CH2Br2 is predicted at the level of 0.3-0.4 % vol. Due to the high boiling point of methylene bromide and its relatively high toxicity, the most appropriate way to use it in fire suppression is to create fire extinguishing mixtures, in particular, with fluorinated hydrocarbons. This approach allows to diminish application of greenhouse gases in fire protection and also to solve the problem of toxicity of extinguishing substance.
dc.identifier.citationDibromomethane as Promising Gaseous Fire Extinguishing Substance with Short Atmospheric Lifetime / Kopylov, P.S. [et al.] // IOP Conference Series: Earth and Environmental Science. - 2021. - 666. - № 2. - 10.1088/1755-1315/666/2/022010
dc.identifier.doi10.1088/1755-1315/666/2/022010
dc.identifier.urihttps://www.doi.org/10.1088/1755-1315/666/2/022010
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85102832314&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23794
dc.relation.ispartofIOP Conference Series: Earth and Environmental Science
dc.titleDibromomethane as Promising Gaseous Fire Extinguishing Substance with Short Atmospheric Lifetime
dc.typeConference Paper
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume666
relation.isAuthorOfPublication557dce1c-b005-4da7-987d-5f9393692920
relation.isAuthorOfPublication.latestForDiscovery557dce1c-b005-4da7-987d-5f9393692920
relation.isOrgUnitOfPublicationdcdb137c-0528-46a5-841b-780227a67cce
relation.isOrgUnitOfPublication.latestForDiscoverydcdb137c-0528-46a5-841b-780227a67cce
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