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热释放速率是燃烧过程最基本的特性参数之一，在研究细水雾与油池火相互作用时可以用来表示其动态发展过程．基于燃烧耗氧原理，锥型量热计被广泛利用来测量热释放速率，其测量条件之一是进入测量系统的气体仅来自于环境空气．当利用锥型量热计来研究细水雾与油池火相互作用时，部分细水雾会受热气化并改变进入锥型量热计中气体浓度，从而导致一定的热释放速率测量误差．本文提出了一种简单的方法来修正相应的热释放速率数据，并在此基础上利用锥型量热计研究了细水雾作用下的油池火热释放速率特性．实验中着重考虑了油池尺度、燃料特性、细水雾雾通量等因素的作用． 研究结果表明，在足够雾通量的细水雾作用下，热释放速率明显降低，然而在少量细水雾作用下，热释放速率会有所啬增加，对于一些不能完全燃烧的燃料试样，后者更加明显．
The rate of heat release is one of the most basic characteristics of the combustion process. It can be used to indicate the dynamic development of water mist and oil pool fire. Based on the principle of combustion oxygen consumption, cone calorimeter is widely used to measure the rate of heat release, one of the measurement conditions is that the gas entering the measurement system is only from the ambient air. When using a cone calorimeter to study the interaction of a water mist with a pool fire, part of the water mist is heated to vaporize and changes the concentration of gas entering the cone calorimeter, resulting in a measurement error of the rate of heat release. In this paper, a simple method is proposed to correct the corresponding data of heat release rate. On the basis of this, a pyramid calorimeter is used to study the heat release rate characteristics of a sump under the action of water mist. Experiments focused on the size of the tank, the fuel characteristics, water mist flux and other factors. The results show that the heat release rate is obviously decreased under the water mist with sufficient flux, but the heat release rate will increase slightly with a small amount of water mist. For some fuel samples that can not be completely combusted, The latter is more obvious.