axial vs centrifugal blowers

Discussion in 'Propulsion' started by M&M Ovenden, Aug 1, 2016.

  1. M&M Ovenden
    Joined: Jan 2006
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    M&M Ovenden Senior Member

    Hi,

    Looking to get a ventilation blower for our engine room. Axial blowers are about 1/6th the cost of centrifugal blowers with the same CFM ratings.

    I'm assuming the centrifugal ones can handle greater static pressure, hence the cost. Any "rules of thumb" when choosing one over the other ?

    Cheers,
    Mark
     
  2. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    Might it depend on whether air can be extracted direct to the outside environment ?
     
  3. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    Are these blowers getting air in or out of the engineroom?
     
  4. CDK
    Joined: Aug 2007
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    Location: Adriatic sea

    CDK retired engineer

    Axial fans: large displacement, low pressure, noisy and mouse-friendly when not running.

    Radial fans: less displacement, higher pressure, less noise. More suitable for ventilation through ducts or hoses.
     
  5. M&M Ovenden
    Joined: Jan 2006
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    Location: Ottawa

    M&M Ovenden Senior Member

    Hi,

    It will be used for extraction, with a very short run to the ventilator (right under deck).

    Cheers,
    Mark
     

  6. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    If the boat has an inverter , sometimes a 120V setup is far more powerful and cheaper than a 12v DC setup.
     
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