Problem analysis on fire smoke exhaust system design and fan selection

 Analyses the common problems of duct hydraulic calculation and the selection of smoke exhaust fan type of smoke exhaust system in the design of HVAC engineering. Considers that the selection of smoke exhaust fan type has impact on the stability of hydraulic working condition of air duct system. The fan manufacturer may be asked to select the appropriate exhaust fan together when designing the smoke exhaust system. Provides the impact of the type selection of smoke exhaust fan on the hydraulic condition stability of air duct system, as well as the related parameters which should be concerned during the design of smoke exhaust system and provided to manufacturers.