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Effect of cross section and ventilation on heat release rates in tunnel fires
Hefei University of Technology, China.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Brandteknik, skydd (BRs ).ORCID iD: 0000-0002-9340-6768
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Brandteknik, skydd (BRs ).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, p. 414-423Article 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
2016. Vol. 51, p. 414-423
Keywords [en]
Cross section, Heat release rate, Tunnel fire, Ventilation
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6928DOI: 10.1016/j.tust.2015.09.007Scopus ID: 2-s2.0-84948843862Local ID: 30761OAI: oai:DiVA.org:ri-6928DiVA, id: diva2:964770
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2023-06-08Bibliographically approved

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Li, Ying ZhenIngason, HaukurLönnermark, Anders

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Tunnelling and Underground Space Technology
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