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  1. #1
    Join Date
    Nov 2008
    Location
    canada
    Posts
    55
    Rep Power
    9

    Engine room Exhaust fan



    Is there a test I can do to verify the CFM on my engine room fans?



  2. #2
    Join Date
    Feb 2009
    Location
    telford
    Posts
    1,871
    Rep Power
    24

    Re: Engine room Exhaust fan

    Who makes the fan,maybe they would have the info guess speed size and some others factors may be needed there is the old saying my retired fridge tech used to say it will only blow what it can suck!

  3. #3
    Join Date
    Feb 2007
    Location
    UK
    Posts
    2,479
    Rep Power
    38

    Re: Engine room Exhaust fan

    Yes,

    Using an anemometer you get the velocity of the air in the duct (or, if ductless, you have to make a funnel like hood out of cardboard or MDF to channel the air through) then you just multiply the velocity with the area of the duct (or opening of your funnel) and you have your CFM.
    For example, if air is moving at 1 ft/s through a 1 square foot hole then you are moving 60 CFM (1 x 1 x 60=60)


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