Fire Smoke Exhaust Fan

Fire Smoke Exhaust Fans

Fire smoke exhaust fans remove smoke and heat during a building fire, creating conditions for evacuation and firefighting. Standards require these fans to keep running in hot smoke for a specified period, which makes high-temperature capability the first selection criterion.

SINDFAN smoke exhaust fans are designed for high-temperature duty and cover the common requirements of 250°C/1h and 300°C/2h. Impellers are cast aluminium LM6 (high-temperature type) or stainless steel, with high-temperature motors and bearings, and treated casings. Both exhaust and make-up air duty can be selected.

Key specifications

Figures above are our standard ranges; the actual supply is per the agreed technical specification. Impeller performance curves describe the bare impeller under standard inlet conditions. Once installed, performance is affected by casing clearance, tip clearance, inlet straightening and guide vanes; tested as a complete fan to GB/T 1236 / AMCA 210 the result typically differs by 2-5%. Site measurement governs and no complete-fan performance warranty is implied.

Typical applications

• High-rise and mixed-use building smoke exhaust
• Underground car park smoke exhaust and make-up air
• Metro station and running tunnel smoke control
• Hospitals, schools and shopping centres
• Industrial plant smoke exhaust and process heat removal
• Tunnel and utility tunnel fire smoke control
• Machine room and switch room emergency exhaust

Selection notes

• The high-temperature rating must match the design drawing: 250°C/1h and 300°C/2h differ significantly in cost, so any low-price offer must state the rating to avoid failing acceptance.
• Treat exhaust and make-up air as a pair: exhausting without supplying make-up air reduces the effective exhaust rate, so calculate the make-up path and volume together.
• Bearings and motors are the weak points at temperature - always specify high-temperature components. A standard motor fails within minutes at 250°C.
• Building smoke exhaust products need CCCF in China; where we supply the impeller or fan body only, certification is handled by the fan builder or the project.

FAQ

Need a selection or a quotation? Send us air volume, total or static pressure (please state which), medium temperature and quantity, and we will reply within 24 hours. Contact details are at the foot of this page.