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How to calculate how much power required to turn a flywheel? Suppose I have a flywheel of 24 inch diameter, width 5 inches,50kg. How do I calculate the required power (HP) to turn this or any other with different values?
To accelerate from rest to 2000rpmThe information given is not enough to find the power.
First what do you mean by "to turn"? To accelerate from rest to a given speed? Or just to keep a given speed constant?
In what time?To accelerate from rest to 2000rpm
In 10-12 seconds. :-)In what time?
Ring's KE(joules): 101932.01Then find the kinetic energy of the rotating flywheel at the required rotation rate and divide by the time.
You can approximate the flywheel with a cylinder when looking up the moment of inertia.
Ring's KE(joules): 101932.01
Time is 10 second
101932/10=10193.2
Is it the power required to rotate that flywheel? Please elaborate, I really don't know how to calculate? I have attached flywheel's energy calculations.
So in this case, power required to rotate 50 kg, 0.3048m radius flywheel @ 2000 rpm for 10 sec isYou don't need the torque. Once you have the kinetic energy, the average power will be that energy divided by the time.
No. This is not correct.So in this case, power required to rotate 50 kg, 0.3048m radius flywheel @ 2000 rpm for 10 sec is
101932/10=10193.2 watts. Is this correct?
To accelerate from rest to 2000rpm
Did you forget what you were asking about?What does the time means?
no, i was asking that time divided the KE is what? is it the total time or something else? i got the answer. thanks A.T. :-)Did you forget what you were asking about?