Research On The Law Of Pool Fire Suppression With Aerosol Fire Extinguishing Agent

Aerosol fire extinguishing agent was widely used as the substitute of Halon for its superior performance. In order to study the law of pool fire suppression with aerosol fire extinguishing agent, in this paper, combined with the existing formula system of aerosol extinguishing agent, aerosol fire extinguishing agent formula was designed and optimized. Its performance was tested. The esperimental study focused on the law of pool fire suppression with aerosol fire extinguishing agent, which mainly included the following aspects:(1) The formulation was因涉及申报专利,在此省略部分。(2) The aerosol performance parameters were characterized by theoretical calculation and experimental study. The results showed that combustion temperature was1923K, burning rate was0.87mm/s, decomposing temperature was above200℃and friction sensitivity and impact sensitivity were zero. Pool fire characterized by500mm X500mm X150mm was successfully extinguished in5seconds.(3) The law of pool fire suppression with aerosol fire extinguishing agent was studied by means of changing equipment angles, distance, location, wind speed and fire location. The results showed that the optimal parameters included45°as extinguishing angle,50cm as extinguishing distance and spraying towards the flame root. When aerosol touched with the flame, the flame volume suddenly incresed after its height decresed. Then the flame root disjointed from oil surface until the flame was extinguished. The flame could not be extinguished when wind speed was over3m/s. The effective extinguishing distance was reduced as wind speed increased gradually when wind speed was less than3m/s. The fire closed to wall or corner was more difficult to be extinguished than that in open position.