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  2. Centrifugal fan - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_fan

    A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel).

  3. Standard cubic feet per minute - Wikipedia

    en.wikipedia.org/wiki/Standard_cubic_feet_per_minute

    To further confuse the issue, a centrifugal fan is a constant CFM device or a constant volume device. This means that, provided the fan speed remains constant, a centrifugal fan will pump a constant volume of air. This is not the same as pumping a constant mass of air. Again, the fan will pump the same volume, though not mass, at any other air ...

  4. Fan (machine) - Wikipedia

    en.wikipedia.org/wiki/Fan_(machine)

    A cross-flow fan is a centrifugal fan in which the air flows straight through the fan instead of at a right angle. The rotor of a cross-flow fan is covered to create a pressure differential. A cross-flow fan has two walls outside the impeller and a thick vortex wall inside. The radial gap decreases in the direction of the impeller rotation.

  5. Dust collector - Wikipedia

    en.wikipedia.org/wiki/Dust_collector

    The centrifugal force imparts static pressure to the air. The diverging shape of the scroll also converts a portion of the velocity pressure into static pressure. [citation needed] There are three main types of centrifugal fans: Radial-blade fans - Radial-blade fans are used for heavy dust loads.

  6. Industrial fan - Wikipedia

    en.wikipedia.org/wiki/Industrial_fan

    Mechanical vapor recovery blowers-These specially designed centrifugal fans are designed to increase temperature and pressure of saturated steam in a closed-loop system. Acid gas blowers - These very heavy construction blowers are suitable for inlet pressures from full vacuum to 100 psig. Materials are selected for corrosion resistance to the ...

  7. Williams FJ33 - Wikipedia

    en.wikipedia.org/wiki/Williams_FJ33

    Engine configuration is a single stage fan, with booster stage, driven by a two-stage LP turbine, supercharging a centrifugal HP compressor, driven by a single stage HP turbine. [3] An annular combustor is featured.

  8. Actual cubic feet per minute - Wikipedia

    en.wikipedia.org/wiki/Actual_cubic_feet_per_minute

    Actual cubic feet per minute (ACFM) is a unit of volumetric flow. It is commonly used by manufacturers of blowers and compressors. [1] This is the actual gas delivery with reference to inlet conditions, whereas cubic foot per minute (CFM) is an unqualified term and should only be used in general and never accepted as a specific definition without explanation.

  9. Fan disk - Wikipedia

    en.wikipedia.org/wiki/Fan_disk

    Fan disks must withstand the centrifugal force of the attached fan blades. Because of their size and weight, a failed fan disk can severely damage an aircraft, as happened with United Airlines Flight 232 in 1989. [4] While operating there is increased aerodynamic loading on the fan disk while the fan blade tips are traveling faster than sound. [5]