Brake resistance cabinet room over-temperature analysis in a underground railway station

Analyses the smoke-sensor-deformation phenomena in the brake resistance room of the underground railway station. Through the heat release analysis and ventilation calculation, finds that the high temperature sustained more than 20 seconds at the top of the room after several train brakes, which directly caused the smoke-sensor deformed. Indicates that the conventional natural ventilation calculation cannot predict the phenomenon of local high temperature in the room, which should be given full attention by designers.