细水雾对油池火热释放速率影响的初步研究

Preliminary study on heat release rate of pool fire interacted with water mist

热释放速率是反映火场规模与发展的最重要的基础参数,利用ISO 9705实验台进行细水雾灭火有效性的影响因素及相关机理研究,不仅能营造出一个真实的室内火灾环境,而且能够得到火场的热释放速率。对汽油池火的初步实验表明:热释放速率曲线能直接反映出细水雾对火源的作用;细水雾作用下燃烧总的热释放量减少很大;开启水雾的时间不同,细水雾对热释放速率峰值的削减程度不同。

Heat release rate is an important essential parameter which can reflect scale and developing stage of a fire scenario. The influential factor and extinguishing mechanism of fire interacted with water mist were experimented on ISO 9705 fire test platform. Not only a real fire scenario environment could be built but its heat release rate could also be measured. Preliminary experimental studies on gasoline pool fire interacted with water mist show that the interaction of fire and water mist can be described by heat release rate, total heat release reduces largely when water mist is running, extent of the maximal heat release rate value reduced by acting of water mist is different when the water mist is opened in different time.