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A simplified model for postflashover burning of thermoplastic materials

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4224/40001430
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
SponsorSearch for: American Society of Mechanical Engineers
FormatText, Article
ConferenceASME Winter Annual Meeting, Heat Transfer in Combustion Systems, 10 December 1989, San Francisco, CA, USA
SubjectFire; thermoplastic resin; fire performance
Abstract
The equations governing the fire dynamics of a postflashover fire involving thermoplastic materials are analyzed through similarity considerations. For simplicity and for conservative modeling of the fire bahaviour, the heat loss through the compartment walls is neglected. The fire behaviour is shown to be governed by two algebraic equations. The dependent variables chosen are the dimensionless gas temperature and the dimensionless burning rate. They are shown to depend on only six similarity parameters and three coefficients. Two of the coefficients, the combustion efficiency and the evaporation efficiency, are not determined in the present analysis but are assumed to be at their maximum values for conservative fire resistance and fire spread design considerations. Numerical solutions are mapped out. Assuming reasonable values for the two efficiencies, the model is shown to predict gas temperature and burning rate that compare favourably with available experimental data.
Publication date
PublisherNational Research Council of Canada. Institute for Research in Construction
Series
  • Paper (National Research Council of Canada. Institute for Research in Construction), no. IRC-P-1677.
NoteReprinted from: Heat Transfer and Combustion Systems, presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, San Francisco, CA, December 10-15, 1989, p. 45-51. ISSN: 0272-5673, ISBN: 0791803902
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 32347
NRC-IRC-3986
NPARC number20375512
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Record identifier55a108ff-6fa3-4577-bf37-9b0dde00997a
Record created2012-07-23
Record modified2023-01-06
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