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.
Units: Dual
Citation: Symposium, ASHRAE Transactions, 1987, vol. 93, pt. 2, Nashville, TN
Product Details
- Published:
- 1987
- Number of Pages:
- 12
- File Size:
- 1 file , 940 KB
- Product Code(s):
- D-NT-87-26-1
