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Study of fire and explosion hazards of alternative fuel vehicles in tunnels
2018 (English)Report (Other academic)
Abstract [en]

An investigation of fire and explosion hazards of different types of alternativefuel vehicles in tunnels is presented. The different fuels are divided into four types:liquid fuels, liquefied fuels, compressed gases, and electricity, and detailed parameters are obtained. Three types offire hazards for the alternativefuel vehicles: pool fires, jet fires and fireballs are identified andinvestigated in detail. Fromthe perspective of pool fire size, the liquid fuels pose equivalent or evenmuch lower fire hazards compared to the traditionally used fuels, but theliquefied fuels may pose higher hazards. For pressurized tanks, the fires are generally much larger in size butshorter in duration. The gas releases from pressure relief devices and the resulting jet firesare highly transient. Forhydrogen vehicles, the fire sizes are significantly higher compared to CNGtanks, while flame lengths only slighter longer. Investigation of the peakoverpressure in case of an explosion in a tunnel was also carried out. Theresults showed that, for the vehicles investigated, the peak overpressure of tankrupture and BLEVE are mostly in a range of 0.1 to 0.36 bar at 50 m away. Thesituations in case of cloud explosion are mostly much more severe andintolerable. These hazards need to be carefully considered in both vehiclesafety design and tunnel fire safety design. Further researches on thesehazards are in urgent need.

Place, publisher, year, edition, pages
Borås, 2018. , p. 104
Series
RISE Rapport ; 2018:20
Keywords [en]
alternative fuel vehicles, tunnel, liquid fuels, liquefied fuels, compressed gas, electric vehicles
National Category
Building Technologies Infrastructure Engineering Transport Systems and Logistics Energy Systems Chemical Process Engineering Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:ri:diva-33954ISBN: 978-91-88695-55-0 (electronic)OAI: oai:DiVA.org:ri-33954DiVA, id: diva2:1229423
Projects
Åforsk Project 16-649BrandForsk Project 400-161
Funder
ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 16-649Brandforsk, 400-161Available from: 2018-06-29 Created: 2018-06-29 Last updated: 2018-07-02Bibliographically approved

Open Access in DiVA

RISE Rapport 2018:20(2796 kB)19 downloads
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ea227f9204af011c01d25daa0955dd0f2478e06779d3290454161bdce56b4551622948c4f6c538364e93e263c659bfa0af5e053b763a5cc7cdc716fa1f24db84
Type fulltextMimetype application/pdf

Authority records BETA

Li, Ying Zhen

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Li, Ying Zhen
Building TechnologiesInfrastructure EngineeringTransport Systems and LogisticsEnergy SystemsChemical Process EngineeringFluid Mechanics and Acoustics

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Total: 19 downloads
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CiteExportLink to record
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v. 2.35.2