Heat release rates from heavy goods vehicle trailer fires in tunnels |
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| Affiliation: | 1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;2. Institute of Advanced Technology, University of Science and Technology of China, Hefei, 230088, China;1. Institute of Safety Engineering, College of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning Province 110819, PR China;2. Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China;3. Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, PR China;1. Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China;2. Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing 400045, PR China;3. National Centre for International Research of Low-carbon and Green Buildings, Chongqing 400045, PR China;1. State Key Laboratory of Fire Science, University of Science and Technology of China, JinZhai Road 96, Hefei, Anhui 230026, China;2. School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;3. Arup International Consultants (Shanghai) Co., Ltd., Beijing Branch, Beijing 100026, China;4. Key Laboratory of Building Fire Protection Engineering and Technology of MPS, Tianjin 300381, China;1. Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China;2. Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, PR China;3. Institute of Safety Engineering, College of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning Province 110819, PR China |
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| Abstract: | Calculations of heat release rates (HRR) from four large-scale tests, with a mock-up of a Heavy Goods Vehicle (HGV) trailer, in a road tunnel are presented. Initial longitudinal ventilation rates within the tunnel were in the range of 2.8–3.2 m/s. Peak HRRs in the range of 66–202 MW were estimated. The peak HRRs were obtained between 7.1 and 18.4 min from ignition in the various tests. The HGV-trailer mock-up consisted of a steel rack system loaded with a mixed commodity of wood pallets and polyethylene pallets (Test T1), wood pallets and polyurethane mattresses (Test T2), furniture and fixtures with ten truck rubber tyres (Test T3), and paper cartons and polystyrene cups (Test T4). Each commodity was covered with a polyester tarpaulin in each test and ignited on the upstream, front end of the trailer. A comparison is made between the results presented here and other large-scale tests with HGV trailers in tunnels. The combined expanded relative standard uncertainty of the method used to determine the HRR was calculated to be 14.9%. |
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