Not sure if I have this correct.
Ok, I have a "constant load" of say 5 ft-lb & want to acellerate this from a starting rpm to the final rpm figure, find the Torque of the driving engine.
T = WK^2 * ΔN / 308 * t
T= Acelleration torque ft-lb
WK^2 = Total system inertia includes my...
berkeman,
Thanks very much for the reply, your correct I am not experienced in physics but I will see how I go with the link you have provided as I need to learn more about this for my small dyno.
Thanks again
Hi everybody, just wondering if you could help me with calculating horsepower & Torque.
If I have a known "constant load" in ft/lbs & the engine accelerates it from a starting rpm to a peak rpm figure in X time, how can I calculate the Horsepower & Torque.
Not really sure where to start...
I need some help in understanding a few things about air compressors & in particular Centifugal Compressors, could someone help me out with this please.
This is not homework, just me trying to understand.
If a Centrifugal compressor is rated at "just for example only" 10bar pressure @ 100...
edgepflow,
Thanks very much for the reply, much appreciated!
I have been away for a couple of days myself.
I will do some calculations & see how I go.
Thanks very much once again, you have been of great assistance!.
Cheers
edgepflow,
Thanks again, I can see how to calculate the second part of the equation.
I just went to try the calculation only to find out that I don't know what units are used for the first part of the equation.
Eg:
mdot = mass flow rate, is this in Cubic mtrs/min or ltrs/min or cfm etc...
edgepflow,
Thanks very much for the reply, much appreciated.
Could I ask for a working example of the formula so I can see how to do it correctly.
I am not sure how to go about the the last part of the equation which is:
{ [ (P2 / P1 ) ^ (k-1)/k ] - 1 }
From a working example I can...
Could someone help me with getting an understanding of the equations for the power required to compress air please.
I found this Calculator on the internet:
http://www.engineeringtoolbox.com/horsepower-compressed-air-d_1363.html
I am unsure if it is suitable or accurate enough etc. I see...