Alphair Cyclone Series

Each CYCLONE fan is customized to the specific set of operating criteria of each individual application. Construction materials include: carbon steels, stainless steels, aluminum, FRP and other special corrosion and heat resistant alloys. Each fan combines the ideal mix of ruggedness, reliability, efficiency, maintainability and economy that are the hallmarks of every Howden fan.

The Cyclone series offers six centrifugal wheel designs, in sizes ranging from 24" to 120" wheel diameters. Single and double width designs are rated to handle up to 1,000,000 cfm and static pressures up to 130 inWg.

AIRFOIL TYPE AFS

Characteristics

  • Double skin non-overloading airfoil blades.
  • Up to 85% maximum static efficiency.
  • Dust loads under 1 grain/scf (2.3 g/nm3).

Typical Applications:

  • Boiler FD/ID fans.
  • Mine and tunnel ventilation.

BACKWARD CURVED TYPE BCS

Characteristics

  • Backward curved non-overloading blades.
  • Up to 82% maximum static efficiency.
  • Dust loads under 6 grain/scf (14 g/nm3).

Typical Applications:

  • Mechanical draft and process air fans.
  • Flue gas desulfurization plants.
  • Bag house exhaust fans.

BACKWARD INCLINED TYPE BIS

Characteristics

  • Backward inclined non-overloading flat blades.
  • Up to 78% maximum static efficiency.
  • Dust loads under 9 grain/scf (21 g/nm3).

Typical Applications:

  • Incineration plant fans.
  • Baghouse exhaust fans.
 

RADIAL TIPPED TYPE RTS

Characteristics

  • Forward curved radial tipped blades.
  • Up to 74% maximum static efficiency.
  • Dust loads under 25 grain/scf (57 g/nm3).

Typical Applications:

  • Gas re-circulation fans, pelletizing plant fans.
  • Sintering plant fans, cement kiln ID fans.
  • Process streams with high dust loads.

RADIAL SHROUDED TYPE RAS

Characteristics

  • Shrouded flat radial bladed design.
  • Up to 70% maximum static efficiency.
  • Suited to high pressures and high tip speeds.
  • Dust loads under 40 grain/scf (92 g/nm3).

Typical Applications:

  • Metals/iron processing fans.
  • High pressure fans, seal air fans.

RADIAL OPEN TYPE RAO

Characteristics

  • Open radial design.
  • Up to 62% maximum static efficiency.
  • Dust loads under 100 grain/scf (230 g/nm3).

Typical Applications:

  • Coal dust conveying fans.
  • Cement processing fans.
  • General exhaust fans.

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