洁净气体/细水雾联合灭木垛火实验研究  

Experimental Study on Suppression of Wood Crib Fire with Clean Gas Agent and Water Mist

作　　者：赵媚[1] 张少刚[1] 倪小敏[1] 王喜世[1] 张和平[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《燃烧科学与技术》2014年第3期257-262,共6页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51004088;51276176);教育部博士点新教师基金资助项目(20103402120005);国家科技支撑计划资助项目(2012BAK13B01)

摘　　要：通过小尺寸实验研究了洁净气体灭火剂溴氟丙烯(BTP)和细水雾与木垛火相互作用的特性,发现BTP可以迅速地扑灭木垛表面明火,但是难以抑制其内部阴燃火;而细水雾可以有效地抑制木垛阴燃火,但灭木垛表面明火效率较低.为了克服两者灭木垛火的不足,进而对两者联合灭木垛火进行了研究,并比较了两种不同的联合方式:先喷BTP再喷细水雾以及BTP和细水雾同时喷.结果表明,溴氟丙烯和细水雾联用可以实现两者的优势互补,提高灭火效能,且先喷BTP后喷细水雾比同时喷灭火速度更快,抗复燃时间更长.In order to find out the characteristics of bromofluoropropenes （BTP） and water mist interacting with wood crib fire respectively, a series of experiments were carried out. It＇s revealed that BTP can quickly put out surface fire, but can＇t restrain the internal smoldering of wood crib, and that water mist can effectively restrain the internal smoldering, but its efficiency of controlling the surface fire is low. To overcome their respective drawbacks, performance of the conjunction of BTP and water mist in suppressing wood crib fire was evaluated. In addition, the effects of two different conjunction modes of spraying BTP first then spraying water mist, and spraying BTP and water mist simultaneously, were compared. Results demonstrated that the conjunction of BTP and water mist can utilize their advantages complementarily with better fire extinguishing performance, and that the former conjunction mode showed shorter fire extinguishing time and longer burn-back resistance time than the latter one.

关 键 词：溴氟丙烯灭火剂 细水雾 木垛火 联合作用 

分 类 号：X932[环境科学与工程—安全科学]