Estimation of chemical heat release rate in rack storage fires based on flame volume |
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| Affiliation: | 1. Department of Mechanical, Materials and Manufacturing Engineering, The University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor, Malaysia;2. Department of Mechanical Engineering, Technical University of Denmark, Nils Koppels Allé, 2800 Kgs. Lyngby, Denmark;3. Chair of Computational Science, ETH Zürich, Clausiusstrasse 33, ETH-Zentrum, CLT F 11, CH-8092 Zürich, Switzerland;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;2. School of Transportation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China;1. Politehnica University Timisoara, Dept. of Steel Structures and Structural Mechanics, Romania;2. Romanian Academy, Timisoara Branch, CCTFA Research Centre, Romania;1. Faculty of Engineering, Department of Mechanical Systems Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 9390398, Japan;2. Faculty of Production Systems Engineering and Sciences, Komatsu University, Nu, 1-3, Shicho-machi, Komatsu, Ishikawa, 9230971, Japan;3. Faculty of Mechanical Engineering, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 9201164, Japan;4. Ex-Deputy Director, Japan Institute of Country-ology and Engineering (JICE), Japan |
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| Abstract: | Quantification of heat release rate is crucial to many fire research works. Under certain conditions, such as very large fires and fire tests with sprinklers, measurements of fire heat release rate can be a challenging problem. This study attempted to develop a methodology of estimating chemical heat release rate using flame volume. This method is based on the theory that heat release rate per unit flame volume is relatively invariant, as long as the combustion is controlled by diffusion in buoyant fires under well-ventilated conditions. Test data were examined from a variety of fire experimental conditions to evaluate the proposed method. The results demonstrate that the flame-volume based method can provide reasonable estimation of heat release rate compared to oxygen-consumption based method. |
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| Keywords: | Heat release rate Flame volume Buoyant diffusion flame Sprinkler protection |
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