Abstract: According to the current relevant standard of smoke management, different design schemes of smoke exhaust (makeup air) system with multiple smoke control zones were introduced. Focus on smoke exhaust branch duct and makeup air system design differences of smoke exhaust system with multiple smoke control zones, for place of indoor clear height no more than 6 m, the advantages and disadvantages of different smoke exhaust (makeup air) system schemes were compared. Through fan and duct performance curves, qualitative and quantitative analysis of the smoke exhaust system in certain case were carried out. By strict and reasonable hydraulic calculation of the air duct was carried out for fan selection. Finally, reasonable smoke exhaust design scheme and suggestions were put forward, which can provide reference for smoke exhaust design of similar projects in the future.

Key words: smoke control zone, smoke exhaust system, airmakeup system, fan and duct performance curves, hydraulic calculation