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  1. #1
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    Question Parallel use of Centrifugal fans in HVAC



    Please advice the best way to use two Parallel centrifugal fans of 4000 CFM, 150 Pa each.



  2. #2
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    Re: Parallel use of Centrifugal fans in HVAC

    It depends on what you want the fans to achieve.

    Please the fan bible "Woods Flakt Fan Engineering Handbook"

    http://www.google.co.uk/url?sa=t&rct...95039771,d.d24
    Brian - Newton Abbot, Devon, UK
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  3. #3
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    Re: Parallel use of Centrifugal fans in HVAC

    Fans in parallel = double the volume same pressure
    Fans in series = same volume double the pressure
    I'm back on the Pale

  4. #4
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    Re: Parallel use of Centrifugal fans in HVAC

    It depends on your requirement (flow and sp).
    Operating fans in parallel approx. doubles the flow and increses the static pressure slightly.
    <"No one is so smart, they just stay with problems longer and use their imagination">

  5. #5
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    Re: Parallel use of Centrifugal fans in HVAC

    dependent on what sort of centrifugal fans you are applying. Brian UK reference to Woods Flak is a good start

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