標題: Fire suppression performance of water mist under diverse desmoking and ventilation conditions
作者: Liu, Wei-Yi
Chen, Chiun-Hsun
Shu, Yi-Liang
Chen, Wei-Ting
Shu, Chi-Min
機械工程學系
Department of Mechanical Engineering
關鍵字: Water mist fire suppression system;Pool fire;Forced desmoking conditions;Suppression time;Compartment space
公開日期: 1-Jan-2020
摘要: This paper described full-scale tests of water mist fire suppression system under forced desmoking conditions. Pool fire was effectively suppressed in 25.0 and 37.0 s for 1,500.0 (test 1) and 3,000.0 (test 2) mL of oil with no ventilation, respectively. Moreover, under ventilation rates of 50.0 and 75.0 m(3)/min, the suppression time were lengthened to 54.0 s (test 1) and 202.0 s (test 2), and 102.0 s (test 1) and 222.0 s (test 2), correspondingly. However, the smoke exhaust had a strong effect on the water mist to result in fire could not extinguish, when the ventilation rate increased to 120.0 m(3)/min. The temperature distribution during the early period in the scenario of no ventilation has a higher magnitude than those scenarios of 50.0, 75.0, and 120.0 m(3)/min, because combustion proceeds smoothly to result in temperature increased rapidly at no ventilation. Furthermore, similar results presented in smoke concentration distribution at four scenarios (0, 50.0, 75.0, and 120.0 m(3)/min), and combustion occurred steadily at no ventilation to result in more smoke during the early period. This study employed a computer modeling to verify water mist system in a compartment space and determine how the water mist system could be optimized. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.psep.2019.10.019
http://hdl.handle.net/11536/153504
ISSN: 0957-5820
DOI: 10.1016/j.psep.2019.10.019
期刊: PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume: 133
起始頁: 230
結束頁: 242
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