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The term ‘heat flux’ is used ambiguously: Clear definitions are needed on how to express thermal exposure
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0003-2181-2828
2016 (English)In: Fire and Materials, ISSN 0308-0501, E-ISSN 1099-1018, Vol. 40, no 3, p. 507-510Article in journal (Refereed) Published
Abstract [en]

The expression ‘heat flux’ without any qualifier like ‘to a surface at ambient temperature’ as frequently used in fire safety science and engineering literature and standards is ambiguous and misleading. Boundary conditions in fire safety engineering problems cannot be expressed as a given heat flux (or net heat flux), as the heat flux depends on and varies with the exposed surface temperature and thereby the properties of the target body. Therefore, it is important that the terminology is reviewed and that an agreement is reached on how to express thermal exposure in a well-defined and unambiguous way. A proposal is given on how the boundary conditions can be defined in a consistent way that is applicable to fire resistance and reaction-to-fire problems

Place, publisher, year, edition, pages
2016. Vol. 40, no 3, p. 507-510
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-5145DOI: 10.1002/fam.2286ISI: 000371679300013Scopus ID: 2-s2.0-84959538581Local ID: 32c649e3-0b90-4a12-a5ca-be669206de46OAI: oai:DiVA.org:ltu-5145DiVA, id: diva2:978019
Note
Validerad; 2016; Nivå 2; 20141127 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-08-15Bibliographically approved

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Wickström, Ulf

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