Experimental Study on Fire Extinguishing Effect of Water-based Fixed Fire Extinguishing System in full-Scale Bus Cabin

In recent years, the frequent fire accidents of public transport vehicles have resulted in the scrapping of vehicles, catastrophic property losses and casualties, which had drawn widespread concern of people and society for public safety. The passenger cabin space of bus is relatively small. Once a fire occurred, high temperature, thermal radiation and smoke generated by combustion will cause great difficulties for personnel evacuation. Aiming at the requirements of Chinese GA1264-2015, this paper carried out full-scale fire-extinguishing experiments in the bus cabin. The parameters of temperature distribution, smoke concentration and fire-fighting time in the passenger cabin of the bus are analyzed, so as to verify the fire-fighting performance of the self-developed water-based fire extinguishing agent and the fixed fire-extinguishing system in the passenger cabin. The system can put out fire quickly and efficiently. Moreover, it can effectively reduce temperature and concentration of toxic and harmful gases in the cabin after the fire. It could obviously improve the fire protection capacity.