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    Kissu_027's Avatar
    Kissu_027 Posts: 1, Reputation: 1
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    #1

    Jul 20, 2016, 06:11 AM
    Required torque
    Inside a hollow drum which is filled with 250kg organic waste of density 350kg/m3, 1000mm long shaft diameter is 75 mm , has attached 5 blades at equal distance of length 300mm, is rotating inside a drum. Then how much power will be needed to rotate a shaft within loaded drum?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Jul 20, 2016, 06:41 AM
    You will need to tell us the rotational velocity of the machine. I suggest that you model this as if trying to lift a 250 Kg mass at the end of a 338 mm long arm. The power required to do this is:

    P = mgrw

    where m = 250 Kg, g = 9.8 m/s^2, R = 0.338 m, and w = rotational speed of the machine, in radians/second. This will give you the power required in watts.
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