Forced smoke exhaust (definition)

Forced smoke removal - is a system for removing flue gases from the combustion chamber during operation boiler, which is carried out using mechanical devices such as fans or smoke exhausters. Unlike natural smoke extraction, which relies on temperature differences and convection, forced smoke extraction ensures the active and controlled removal of flue gases from the system.

Forced smoke extraction: main aspects

• Principle of operation:
  • Mechanical removal: The system uses fans or exhausters to create an air flow that pulls flue gases out of the boiler and expels them through a chimney or stack. This ensures a constant and efficient process of flue gas removal.
• Equipment for forced smoke removal:
  • Fans: Fans or exhaust fans are installed in the chimney or directly in the combustion chamber. They create a vacuum that helps pull flue gases out of the boiler.
  • Smoke exhausters: These are devices that actively suck in flue gases and push them out. They can be installed at the boiler outlet or at the chimney level.
  • Automatic regulators: Modern systems may include automatic controllers that adjust the fan speed based on the boiler load and flue gas volume.
• Advantages:
  • Efficiency: Forced smoke extraction provides higher efficiency of flue gas removal, especially in systems with low natural draft pressure.
  • Controllability: The system allows for more precise control of flue gas removal, which can improve the overall operation of the boiler and reduce the likelihood of condensation forming in the chimney.
  • Safety: Forced smoke exhaust systems help prevent the accumulation of dangerous gases such as carbon monoxide in a room by ensuring their reliable removal.
• Installation Features:
  • Accommodation: Fans and smoke exhausters must be installed in an optimal location to ensure efficient removal of flue gases.
  • Connecting to the system: The equipment must be properly connected to the flue and boiler control system to operate efficiently.
  • Service: Regular inspection and maintenance of equipment is necessary to prevent equipment failure and ensure long-term reliability.

Forced smoke removal ensures reliable removal of flue gases, increasing the efficiency of boilers and ensuring operational safety.