"Postflashover fires": an overview of the research at the National Research Council of Canada (NRCC) 1970-1985

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DOIResolve DOI: http://doi.org/10.4224/20377605
AuthorSearch for:
TypeTechnical Report
Series titleIRC Paper; no. 1418
Physical description28 p.
Subjectflash over; normalized heat load; postflashover fires; pyrolysis; cellulosic fuels; stoichiometry; char; reactor model; burning regimes; modeling; normalized heat load; thermal absorptivity; Fire
AbstractThe NRCC model of fully developed compartment fires is discussed. The model offers an explanation for the findings that "ventilation control" is related to the pyrolysis mechanism and is not a result of scarcity of air in the fire compartment, and that thermal feedback is of secondary importance in "burning" (pyrolysis) of cellulosic fuels. The normalized heat load is a scalar quantity that depends on the total heat absorbed by the compartment boundaries during the fire incident, and is practically independent of the temperature history of the fire. The normalized heat load concept offers a simple means for converting fire severities into fire resistance requirements, and makes it possible to design buildings for prescribed levels of structural fire safety. The potential of fires to spread by convection and the expected characteristics of fires of noncharring plastics are also discussed.
Publication date
PublisherNational Research Council Canada. Institute for Research in Construction
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AffiliationNRC Institute for Research in Construction; National Research Council Canada
NoteReprinted from: Fire Technology, v. 22, no. 3, p. 210-233
Peer reviewedYes
NRC number26641
NPARC number20377605
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Record identifiera078a6f4-732c-4695-ab28-c90850c6381f
Record created2012-07-24
Record modified2016-10-03
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