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Cubic feet per minute

jp_2 Member Posts: 1,935
if you take the outlet area in square feet, multiply that by your feet per minute, you'll get cubic feet per minute.


  • jrh
    jrh Member Posts: 8
    cubic feet per minute conversions

    i am using a new turbo meter made by Davis to record airflow on multiple high velocity outlets for a hydro heat system. It reads only in knots and feet per minute. Any body know how to convert to cfm? thank you
  • bob_46
    bob_46 Member Posts: 813
    Make yourself

    a nice cardboard hood with a slow taper that ends up with an opening thats 1Ft square. Hold the hood against the ceiling and measure the velocity coming out in feet per min./cfm. Or spend a few grand and get a Shortridge or alnor hood.
  • Brad White
    Brad White Member Posts: 2,398

    gets my vote. Alnor is a fine product but Shortridge automatically compensates for temperature and altitude. Last time I checked the Alnor balometer still required manual factors.

    The folks at the Energy Conservatory (the Minneapolis Blower Door folks) also make a small flow hood for measuring air outlets.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"

    -Ernie White, my Dad
This discussion has been closed.