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细水雾灭火系统作为卤代烷系列灭火剂的替代产品之一，以其高效无毒、经济实用的优点，近年来在国际上研究得非常活跃。本文在受限空间内利用先进的材料热释放速率测量仪研究了细水雾与火的相互作用过程，并得到了以下结论：细水雾通过汽化吸热冷却燃料及氧化剂、体积膨胀隔氧以及吸收热辐射降低对燃料的热回馈等效应与火相互作用，达到控制和扑灭火灾的目的，在受限空间内汽化隔氧效应起着重要作用
Water mist fire extinguishing system is one of the substitute products of fire extinguishing agents of haloalkane series. It has been actively studied in the international community in recent years because of its advantages of high efficiency, non-toxicity, economy and practicality. In this paper, the advanced material heat release rate measuring instrument is used to study the interaction process between water mist and fire, and the following conclusions are drawn: the water mist cools the fuel and oxidant through vaporization, absorbs heat, and expands oxygen and volume. The effect of absorption of heat radiation to reduce fuel’s thermal feedback, etc., interacts with fire to achieve the purpose of controlling and extinguishing the fire. The effect of vaporization and oxygen separation plays an important role in the confined space.