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• # Hydraulic calculation

Discussion in 'The main mechanical design forum' started by ahad_yekta2004, Apr 12, 2010.

1. ### ahad_yekta2004New Member

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Mar 2010
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i want a calculation which get power and turque and speed of a hydroalic pump , then give the displacment or flow rate of it .

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3. ### mvalentiWell-Known Member

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Nov 2009
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I think you need to provide more information. Usually you have a required amount of work, then you size a pump accordingly.

4. ### ConnectUTSActive Member

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Sep 2009
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All hydraulic work is based on a simple equation

Work or Energy = Pressure x Volume

Since hydraulic pumps work with incompressible fluids Power which is the rate of work can be expressed by the equation

Power = Pressure x flow rate

If you know the displacement of the cylinder or working chamber you can calculate amount of power per cycle and from that you can calculate the torque.

I realize that this is a little sketchy, but before you can go much farther you need to determine what type of hydraulic pump you have. Is it a gear pump, a piston pump, or other type of pump.

5. ### dhineshtNew Member

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May 2010
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power=(d*g*Q*H)/1000

pressure=d*g*H

power=(2*pie*N*T)/60

where

d=density of the pumping fluid in kg/m^3,(for water 1000kg/m^3)

g=acceleration due to gravity (9.81m^2/s)

Q=fluid flow rate in m^3/s

H=head of the fluid in metrs

pie=22/7

N=speed of the impeller in rpm

T=torque in N-m.

i think by using these derivations u can find out the value of power.

6. ### DhanushMember

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Aug 2011
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More inputs in terms of load to be handled and its type.

regards,
DN :ugeek:

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