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formula for finding GPM circulated

edow Member Posts: 17
what is the formula for finding GPM circulated?


  • Brad White
    Brad White Member Posts: 2,398
    Do you mean

    recirculated in a domestic hot water system or a hydronic heating system?
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"

    -Ernie White, my Dad
  • Larry Weingarten
    Larry Weingarten Member Posts: 3,335
    Wouldn't it be simpler...

    ... to look at the pump curve?  All modern pumps come with one.  It tells you the flow rate at different conditions of flow restriction.  Think of it as a visual equation.

    Yours,  Larry
  • EricAune
    EricAune Member Posts: 432
    For a heating system:

    GPM = Btu/(Delta T x 500)

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  • Terry O
    Terry O Member Posts: 67
    Hey Eric....

    Mr Barba would be so proud.... :)
    Terry O
  • edow
    edow Member Posts: 17
    which eric?

    which eric are you talking about and if its me huh?
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853

    How do you figure the BTU's ? ;-)


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