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通过以锥形量热计为基础的小尺度灭火试验平台,对细水雾施加过程中煤油火的热释放速率、一氧化碳、二氧化碳、氧气的变化规律进行了定量试验测量;试验结果表明,在细水雾施加的初期阶段,煤油火火焰急剧增大,然后快速降低,且火焰的变化剧烈程度和细水雾的释放压力有较大的关联.通过细水雾和煤油火作用过程中的物理和化学耦合作用机制的研究,对该试验现象的形成原因进行了剖析和讨论.研究结果对于该现象的认识可以为细水雾的工程化应用提供数据支持和理论指导.
Through the small-scale fire extinguishing test platform based on cone calorimeter, quantitative test was made on the heat release rate, carbon monoxide, carbon dioxide and oxygen in kerosene fire during the application of water mist. The experimental results show that in fine In the initial stage of water mist application, the flame of kerosene fire increased sharply and then decreased rapidly, and the severity of the change of flame was greatly related to the release pressure of water mist. Through the physical and chemical properties of water mist and kerosene, The mechanism of chemical coupling is analyzed and the reasons for the formation of the test phenomenon are analyzed and discussed.Research results The recognition of this phenomenon can provide data support and theoretical guidance for the engineering application of water mist.