Experiments of piston effect on elevator smoke control

2019/11/21 by Klote, J. H., Tamura, G. T.
#Gestion de la fumée #Smoke management #air pressure #cage d'ascenseur #design aspects #elevator car movement #elevator shafts #pression d'air #pressurization air equations #régulateur de fumée #smoke controls #transient pressures

paper · doi:10.4224/40001417

Abstract

The transient pressures produced when an elevator car moves in a shaft are a potential problem for elevator smoke- control systems. This piston effect can pull smoke into a normally pressurized elevator lobby. This paper presents the results of piston effect experiments under smoke-control conditions. The results of a theoretical analysis and those of the experiments are in good agreement. For most elevators the piston-effect problem can be overcome by designs that prevent smoke from being pulled into elevator lobbies, and equations for the amount of pressurization air needed to accomplish this are presented.

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