Comparative Study on Heat Release Rate of High-speed Passenger Train Compartments

Abstract

In order to analyze the influence of geometry, combustion performance of interior materials, fire load, ventilation condition on the heat release rate of high-speed passenger train compartments and help the fire protection engineers to choose the reasonable heat release rate for high-speed passenger train compartments, the first-class, second-class, dining compartments of China Railways High-speed train were taken for research objects, and the heat release rate and other thermal parameters of interior materials and component assemblies of high-speed passenger train compartments were measured and used as the input parameters of Fire Dynamics Simulator (FDS),and then 9 fire scenarios had been designed to obtain the heat release rate VS. time curves of high-speed passenger train compartments in different ventilation conditions. The research results show that because the fire load in the first-class, dining compartments is relatively lower, and the distance between combustible materials is relatively larger, the maximum heat release rate of the first class and dining compartments increases at first, and then begin to decrease, in the range of 1.8MW-4.4MW, with vent area increasing; because there are relatively more seats in the second-class train compartment and relatively shorter distance between 2 rows of seats, most of fuel are burned out and flashover has occurred quickly, the maximum heat release rate is in the range of 1.89MW-18.40MW.