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Effect of cross section and ventilation on heat release rates in tunnel fires
P Technical Research Institute of Sweden, Fire Research, Sweden.
Hefei University of Technology, China.
P Technical Research Institute of Sweden, Fire Research, Sweden.
P Technical Research Institute of Sweden, Fire Research, Sweden. (Framtidens energi)ORCID iD: 0000-0001-6758-6067
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2016 (English)In: Tunnelling and Underground Space Technology, ISSN 0886-7798, E-ISSN 1878-4364, Vol. 51, 414-423 p.Article in journal (Refereed) Published
Abstract [en]

Model scale fire tests were performed in tunnels with varying tunnel widths and heights in order to study the effect of tunnel cross-section and ventilation velocity on the heat release rate (HRR) for both liquid pool fires and solid fuel fires. The results showed that for well ventilated heptane pool fires, the tunnel width nearly has no influence on the HRR whilst a lower tunnel height clearly increases the HRR. For well ventilated solid fuel fires, the HRR increases by approximately 25% relative to a free burn test but the HRR is not sensitive to either tunnel width, tunnel height or ventilation velocity. For solid fuel fires that were not well ventilated, the HRRs could be less than those in free burn laboratory tests. In the case of ventilation controlled fires the HRRs approximately lie at the same level as for cases with natural ventilation.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 51, 414-423 p.
Keyword [en]
Tunnel fire; Heat release rate; Cross section; Ventilation
National Category
Other Civil Engineering
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-29932DOI: 10.1016/j.tust.2015.09.007Scopus ID: 2-s2.0-84948843862OAI: oai:DiVA.org:mdh-29932DiVA: diva2:882410
Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2017-12-01Bibliographically approved

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Lönnermark, Anders

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Ingason, HaukurLönnermark, Anders
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