ESFR喷头实际洒水密度试验研究  

Experimental study on the actual delivered density of ESFR sprinkler

作　　者：李毅[1] 于东兴[1] 胡群明[1] 刘欣[1] 王健强[1] 

机构地区：[1]公安部天津消防研究所,天津300382

出　　处：《消防科学与技术》2014年第9期1036-1039,共4页Fire Science and Technology

基　　金：国家"十五"科技支撑计划项目(2011BAK03B04);国家标准制度项目(20100103-Q-312)

摘　　要：利用ADD实验装置开展了装置的标定实验和ESFR喷头的ADD实验。通过调节ADD实验装置喷嘴的正庚烷流量及供风量来模拟货架火温度场、热气流场及放热条件。结果表明:ADD值与净空高度、热释放速率值、压力等因素相关;在单只ESFR喷头位于装置正上方时,ADD值会随着热释放率及净空高度的增加而减小、随着喷头压力的增加而增加,但穿透率并不一定会随着压力的增加而增加;出现穿透率最小值的压力随着热释放速率的增加而增加。Using the ADD test apparatus,the apparatus calibration test and the ADD test of ESFR sprinklers were carried out.The temperature field and hot flow field and heat release condition were simulated by adjusting the air supply and heptane flow of ADD test apparatus.The results indicated that the ADD value is mainly concerned with such factors as the distance of clear ceiling,the heat release rate and the pressure of sprinkles and so on.When the single ESFR sprinkler is located directly above the center of the apparatus,the ADD value decreases as the increasing of heat release rate and clearance height and increases as the pressure of sprinkles increases.But under the same condition,the penetration ratio doesn＇t always increase as the pressure of sprinkles increases.The pressure at the smallest penetration ratio increases as the heat release rate increases.

关 键 词：实际洒水密度 ESFR喷头 穿透率 

分 类 号：X924.4[环境科学与工程—安全科学] TU892[建筑科学]