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Application of Water Mist System for a Power Transformer Room -Cooling Characteristics (Part 2)  

Choi Byung-Il (한국기계연구원 에너지기계연구센터 화재폭발연구팀)
Han Yong-Shik (한국기계연구원 에너지기계연구센터 화재폭발연구팀)
Kim Myung-Bae (한국기계연구원 에너지기계연구센터 화재폭발연구팀)
Publication Information
Fire Science and Engineering / v.19, no.4, 2005 , pp. 37-41 More about this Journal
Abstract
The present study describes the cooling performance of two kinds of water mist systems used in fire extinguishment. The cooling is necessary for the prevention of an auto re-ignition of the power transformer. A heat source for such the re-ignition is the accumulated thermal energy in the dielectric oil from the transformer core. Because of the weight of the real core, reduced-scale experiments are carried out. A similarity analysis Is also performed to determine the discharge time of the water mist systems from the experimental results. The discharge time to prevent the re-ignition in the real-scale transformer is estimated about 12 hour from the similarity analysis of the reduced-scale experiments.
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  • Reference
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