"Decker, Michael" wrote:

I've just begun testing of a new type rotary pump and I'd like to get

input

if possible from the group on methods.

I can easily measure intake vacuum level, which should give me an idea

of

volumetric efficiency.  Would it be valid to use the difference in amp

draw

on my electric motor drive to determine what my HP usage is?

Thanks in advance for any comments.

Mike

Yes but you need to know the efficiency for the motor. Most motors are

around 80%

Paul Lamar

Actually, NO if you are using alternating current motor. you need to measure
power factor.

Yes if using a D.C. motor, but then you need to know the efficiency as paul
states.
Bill Schertz

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.