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Using plate thermometer measurements to calculate incident heat radiation
RISE, SP – Sveriges Tekniska Forskningsinstitut.
RISE, SP – Sveriges Tekniska Forskningsinstitut.ORCID iD: 0000-0001-8670-062x
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Fire Research. Luleå Technical University, Sweden.
2013 (English)In: Journal of fire sciences, ISSN 0734-9041, E-ISSN 1530-8049, Vol. 31, no 2, p. 166-177Article in journal (Refereed) Published
Abstract [en]

The plate thermometer is a device used mainly to measure temperatures in fire resistance tests according to ISO 834-1 and EN 1363-1 and to measure the so-called adiabatic surface temperature. However, it can also be used to measure incident radiant heat flux (q·″inc) as a simpler, more robust and less-expensive alternative to water-cooled heat flux meters. The accuracy of the measured q·″inc is subject to simplifications in the heat transfer analysis model and uncertainties of parameters such as convective heat transfer coefficients, emissivities and ambient gas temperatures. This study investigates the accuracy of the model itself, isolated from the uncertainties of the physical surrounding, by comparing a simple one-dimensional model to the results of finite element modelling. The so-obtained model includes a heat transfer coefficient due to heat losses of the plate thermometer, found to be KPT = 8 W/m2 K and a heat storage lumped heat capacity CPT = 4200 J/m2 K for an ISO/EN standard plate thermometer. The model is also compared to real field experiments.

Place, publisher, year, edition, pages
2013. Vol. 31, no 2, p. 166-177
Keywords [en]
Fire, heat flux meters, incident heat radiation, irradiance, measuring instrument, plate thermometer, thermal exposure
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6441DOI: 10.1177/0734904112459264Scopus ID: 2-s2.0-84875717918Local ID: 14423OAI: oai:DiVA.org:ri-6441DiVA, id: diva2:964279
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2023-05-22Bibliographically approved

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Sjöström, Johan

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