Application of Performance-based Analysis Method in Mechanical Smoke Control Design

Mechanical air supply method is the most common smoke proof method that be used in stairwell to control the spread of smoke. The determination of the amount of mechanical air supply is a difficult problem in engineering design of mechanical smoke control. Comparison and analysis on the smoke control volume flow rate of the actual project were performed in this paper, and then CFD simulation was performed with different smoke control volume flow rate. Results show that the mechanical smoke control volume flow rate provided by either codes provision or calculation method has value range, thus uncertainty is brought into the determination of smoke control volume flow rate. In actual engineering design, appropriate smoke control volume flow rate can be obtained through numerical simulation on the basis of formula calculation and code provision.