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Application of Water Mist System for a Power Transformer Room - Fire Extinguishment(Part 1)  

Han Yong-Shik (한국기계연구원 에너지기계연구센터 화재폭발연구팀)
Choi Byung-Il (한국기계연구원 에너지기계연구센터 화재폭발연구팀)
Kim Myung-Bae (한국기계연구원 에너지기계연구센터 화재폭발연구팀)
Publication Information
Fire Science and Engineering / v.19, no.4, 2005 , pp. 32-36 More about this Journal
Abstract
A water mist system was considered as a possible alternative to a gaseous suppression system that can not prevent re-ignition after fire extinguishment for a power transformer room. This study deals with the fire suppression capability of the water mist systems. High-and low-pressure water mist systems were examined to compare efficiency of both systems. The power transformer examined in this study occupied about $7\%$ of a $10m\times10m\times$ transformer room. Full-scale suppression tests were performed for six different fire scenarios: two spray fires, three pool fires and one cascade fire. The fire suppression test results demonstrated that the high-pressure system was superior to the low-pressure system, especially considering oxygen depletion and the ambient temperature distribution.
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