Experiment of heat release rate of pool fire effect on water mist fire suppression
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摘要: 为了研究细水雾针对不同热释放率条件下的灭火特性及规律,采用7种不同尺寸油盘火模型和正庚烷燃料,在4.6m×3.2m×4m的空间内,进行了单喷头和四喷头灭火试验,试验过程中采用热电偶树和气体分析仪对火焰温度及火场氧浓度进行了测量,得到了不同热释放率条件下的细水雾灭火特性规律和灭火过程中火场温度场的变化规律,为细水雾灭火系统设计、检验标准制定及细水雾灭火产品开发提供了相应的试验依据.Abstract: In order to research on fire extinguishing characteristics and rules of water mist under different heat release rate conditions, seven heptane-pan fire of different sizes were applied to single-nozzle and four-nozzle fire extinguishing experiments in the compartment of 4.6m×3.3m×4m. Thermocouple tree and gas analyzer were used to measure flame temperature and oxygen concentration around the flame during the experiment. The characteristics rules of water mist fire extinguishing under different heat release rate conditions and change rules of flame temperature field during fire extinguishing were obtained respectively. The design and test standard method of water mist fire extinguishing system and the development criteria of water mist fire extinguishing products were provided from the experiment.
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Key words:
- water mist /
- fire extinguishing /
- pool fire /
- heat release rate
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[1] 杨立军,蔡国飙,刘洪山,等.超细气水雾灭火机理研究[J].消防科学与技术,2003,22(1):11-13 Yang Lijun, Cai Guobiao, Liu Hongshan, et al. Study of theory of extinguishing of water fog and air[J]. Fire Science and Technology, 2003,22(1):11-13(in Chinese) [2] Williams F W, Beck G G, Dinenno P J, et al. Full-scale machinery space water mist test:final design validation . Naval Research Laboratory, NRL/MR/6180-99-8380, 1999 [3] Back G,Lattimer B, Beyler C, et al. Full-scale testing of water mist fire suppression systems for small machinery spaces and spaces with combustible boundaries . U.S. Coast Guard Research and Development Center, CG-D-21-99, 1999 [4] GA 400-2002,气体灭火系统及零部件性能要求和试验方法[S] GA 400-2002, Performance requirements and method of test for components of gas fire extinguishing systems[S](in Chinese) [5] GB 4351-1997,手提式灭火器通用技术条件[S] GB 4351-1997, General specifications for portable fire extinguishers[S](in Chinese)
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