Combustion Blower

Combustion Blower

• Major types are centrifugal blower and positive-displacement blower.

  Centrifugal blowers look more like centrifugal pumps than fans. The impeller is typically gear-driven and rotates as fast as 2900 rpm. In multi-stage blowers, air is accelerated as it passes through each impeller.

  In single-stage blower, air does not take many turns, and hence it is more efficient. Centrifugal blowers can achieve higher pressures up to 1500 mmWC

  Types, characteristics and applications id of centrifugal blower

 

• Type	Characteristics	Application
  Radial	High pressure, medium flow, efficiency close to tube-axial fans, power increases continuously	Various industrial Application Suitable for dust laden, moist air /gas
  Forward curved blades	Medium Pressure, High Flow, dip in pressure curve, efficiency higher than Radial fans , power rises continuously	Low Pressure HVAC package units, suitable for clean and dust laden air/ gases
  Backward Curved Blades	High pressure, high flow, high efficiency, power reduces as flow increases beyond point of highest efficiency	HVAC, various industrial applications forced draft fans.
  Airfoil type	Same as backward curved, highest efficiency	Same as backward curved but for clean air applications.