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A Study on Spray Characteristics of Water Mist Nozzle with Mid-low Pressure for Fire Suppression  

김성찬 (중앙대학교 대학원)
유홍선 (중앙대학교 기계공학부)
박현태 (중앙대학교 대학원)
방기영 (삼성에버랜드)
Publication Information
Journal of the Korean Society of Safety / v.18, no.1, 2003 , pp. 28-32 More about this Journal
Abstract
The present study investigates the spray characteristics of water mist nozzle with mid-low pressure for fire suppression. The examined nozzle types are swirl and spiral nozzle. The result shows that K factor of water mist nozzle is much smaller than those of general sprinkler. Spray angle of spiral nozzle is largest and more than $150^{\circ}$. SMD(Sauter Mean Diameter) of water mist nozzles is ranged between 100 and 200$\mu\textrm{m}$through measuring by image processing method. The spray pattern of spiral nozzle represent that water flux of first stream is 2 times larger than that of second stream. This study will contribute better understandings of the water-mist spray characteristics and useful daia for developing the water-mist nozzles.
Keywords
fire; water mist; nozzle; spray; fire suppression;
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