Comparative experimental study on the fire suppression effect of single-phase high-pressure and two-phase atomization methods in subway carriages
The existing water mist fire suppression system for metro carriages relies on a single-phase high-pressure atomization technique,and the high-pressure pipeline leakage may endanger the lives of passengers.In this research,a full-scale experimental study was conducted using luggage bags and gasoline as combustibles,thereby the impacts of single-phase atomization and two-phase atomization on the compartment were investigated and compared in terms of cooling capacity,thermal radiation attenuation,and smoke suppression.The results show that single-phase and two-phase atomization have equivalent cooling effects,while two-phase atomization outperforms high-pressure single-phase atomization in the areas of smoke suppression and thermal radiation attenuation,as well as improved safety performance.
Rail transitVehicle-mounted fine water mist systemTwo-phase flowFire suppression and control effect
NETL
NSTL
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