Rpm to engine power. 1

[torhouse]

I have a blower that requires a 10.3Kw motor to run at 3000rpm. I want to run the blower with an engine, however the engines i have avalable are low RPM if i gear the blower up to achive the 3000rpm how will that effect the power requirment of the engine (is there a formular to work this out) Any help please.

 

[desertfox]

Hi torhouse


power= 2*3.142*rpm*torque/(60)

regards

desertfox

 

[torhouse]

Thanks desert but could you explain this in a bit more detail sorry if i am being a bit slow here.

 

[desertfox]

Hi torhouse

take your motor:-



10.3*1000= 2*3.142*3000*torque/60

therefore torque from your motor rearranging the above will
equal =


10.3*1000*60/(2*3.142*3000) = 32.78 Nm


so your motor currently driving your blower produces a torque of 32.78Nm.

So your motor power is 10.3kw and produces a torque 32.78Nm
at 3000rpm, now if I decrease the motor speed the torque increases and if I increase the motor speed the torque produced decreases.

Torque is whats required depending on the load and in your case its the blower, so if you change to an engine and you
gear it to get the blower to 3000rpm make sure you have enough torque to drive it.

regards

desertfox