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Thread: Horsepower requirements pumping water

  1. #1

    Horsepower requirements pumping water

    [h=Horsepower requirements pumping water]2[/h]
    The table below can be used to estimate the power requirements when pumping water.
    Volume Flow
    (gpm)
    Horsepower Required to lift water at 60oF (hp)
    Height (ft)
    5 10 15 20 25 30 35 40 50
    5 0.01 0.01 0.02 0.03 0.03 0.04 0.04 0.05 0.06
    10 0.011 0.03 0.04 0.05 0.06 0.08 0.09 0.10 0.13
    15 0.02 0.04 0.06 0.08 0.10 0.11 0.13 0.15 0.19
    20 0.03 0.05 0.08 0.10 0.13 0.15 0.18 0.20 0.25
    25 0.03 0.06 0.10 0.13 0.16 0.19 0.22 0.25 0.32
    30 0.04 0.08 0.11 0.15 0.19 0.23 0.27 0.30 0.38
    35 0.04 0.09 0.13 0.18 0.22 0.27 0.31 0.35 0.44
    40 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.51
    45 0.06 0.11 0.17 0.23 0.28 0.34 0.40 0.46 0.57
    50 0.06 0.13 0.19 0.25 0.32 0.38 0.44 0.50 0.63
    60 0.08 0.15 0.23 0.30 0.38 0.46 0.53 0.61 0.76
    70 0.09 0.18 0.27 0.35 0.44 0.53 0.62 0.71 0.88
    80 0.10 0.20 0.30 0.40 0.50 0.61 0.71 0.81 1.0
    90 0.11 0.23 0.34 0.46 0.57 0.68 0.80 0.91 1.1
    100 0.13 0.25 0.38 0.50 0.63 0.76 0.88 1.00 1.3



    Note! Individual pump curves should always be used for exact calculations.
    Last edited by Esam; 07-26-2011 at 10:17 AM.

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  3. #2
    As a rule of thumb the following velocities can be used in design of piping and pumping systems for boiling liquids:
    Pipe Dimensions Boiling Liquids
    inches mm m/s ft/s
    1 25 1 3.5
    2 50 1.1 3.6
    3 75 1.15 3.8
    4 100 1.25 4
    6 150 1.5 4.7
    8 200 1.75 5.5
    10 250 2 6.5
    12 300 2 6.5

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