室内步行街玻喷系统响应时间影响因素研究

Research on the influence factors of response time of glass water spray system in indoor pedestrian street

为提高室内步行街"玻璃+水喷淋"系统的效能,调研室内步行街玻喷系统现状,得到影响玻喷系统响应时间的因素。针对3种典型吊顶形式,分别设定房间内喷头与玻喷喷头水平距离0.4~3.2 m、火源距玻喷喷头水平距离0~4.0 m的场景,采用大涡模拟定量分析影响玻喷系统响应时间的因素,讨论喷头间距、火源位置对玻喷系统响应时间的影响。提出步行街商铺玻喷系统的设计与安装建议,为室内步行街商铺临街处的防火分隔设计提供参考。

In order to enhance the efficiency of“glass+water spray”in indoor pedestrian street,the status of glass water spray system in indoor pedestrian street was investigated and the influ-ence factors on response time of glass water spray system were ob-tained.According to 3 kinds of typical suspended ceiling,scenarios that the distance from room nozzle to glass nozzle is 0.4~3.2 m,and horizontal distance from fire to glass nozzle is 0~4.0 m were set to analyze the factors quantitatively which influence the re-sponse time of glass water spray system by large eddy simulation.The influence of distance between nozzles and fire location on the response time of glass water spray system was researched.Sugges-tions on the design and construction of glass water spray system in indoor pedestrian street were put forward to give reference for fire separation design of street side of shops in indoor pedestrian street.