超细水雾抑制受限空间轰燃有效性实验研究  

Experimental study on restraining flashover by ultra-fine water mist in confined space

作　　者：陈吕义[1,2] 宗若雯[1,2] 李松阳[1,2] 魏涛[1,2] 廖光煊[1,2] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,安徽合肥230027 [2]中国科学技术大学苏州研究院苏州城市公共安全重点实验室,江苏苏州215123

出　　处：《中国科学技术大学学报》2009年第7期777-782,共6页JUSTC

基　　金：国家自然科学基金重点项目(50536030);国家科技支撑计划(2006BAK06B07)资助

摘　　要：抑制轰燃能有效降低火灾造成的人员伤亡与财产损失.通过搭建超细水雾抑制受限空间轰燃的小尺寸实验台,研究了超细水雾抑制轰燃的有效性及其影响因素.研究发现,超细水雾抑制轰燃的效果依赖于雾通量、施加时刻、施加位置等因素.在雾通量充足时,早期施加的抑制效果优于晚期施加,从受限空间底部施加的抑制效果强于从侧上方施加;雾通量不足时,超细水雾的强化燃烧功能将加速、加剧轰燃的发生.Restraining flashover would reduce fire loss effectively. After building a small scale compartment with ultra-fine water mist restraining confined space flashover, the restraining efficiency and influencing factors were investigated. It was found that the restraining effect relies on mist flux, discharging moment and position. With sufficient mist, early discharging showed better effect compared with discharging later, while discharging from the bottom worked better than from side faces. When insufficient mist flux, the combustion enhancing effect would accelerate and intensify flashover.

关 键 词：轰燃 超细水雾 雾通量 施加时刻 施加位置 

分 类 号：X932[环境科学与工程—安全科学]