Title :
Analysis to ventilation effectiveness in subway fire environment
Author :
Wu, Wen-zhong ; You, Shi-jun
Author_Institution :
Sch. of Environ. Sci. & Technol., Tianjin Univ., Tianjin
Abstract :
When longitudinal ventilation is activated in subway station platform fire, smoke-control effectiveness depends on ventilation effectiveness. With the ventilation motion analyzed, its time at staircase is decreased and ventilation effectiveness gets better all along platform. In case of 30 MW fire with 80 m3/s smoke volume flow rate, longitudinal ventilation of bigger than 1.5 m/s freshens platform all around for less than 100 s, therefore, smoke back-layer is pushed downstream the fire source in 1 min or so, leaving clean area upstream the fire source for evacuation and fire-fighting.
Keywords :
fires; railway safety; ventilation; air flow motion; longitudinal ventilation; smoke back-layer; smoke-control effectiveness; subway station platform fire; ventilation effectiveness; Computational fluid dynamics; Fires; Force measurement; Motion analysis; Navier-Stokes equations; Noise measurement; Noise robustness; Transfer functions; Ventilation; Vents; Fire; Mean age of air; Smoke control; Subway; Ventilation effectiveness;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138795
