Hi Bill  ScherTz : You wouldn't be trying to be funny now  , would you ? Are
you sure you spelled your name correctly ?
 (  Scherz means " pulling a fast one  OR BEING FUNNY "in German ; could not
help it , guys ! ) Just ignore it !
 Alfred

----- Original Message -----
From: "William" <wschertz@ispwest.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Monday, October 20, 2003 8:00 PM
Subject: [FlyRotary] Re: Water pumps Somebody STOP me!


> Yes, as you throttle down a pump, you have less water going through it,
but
> the motor is still pumping in power -- not as much as when you are letting
> water flow and doing work on it, but still significant. The difference
> between the power in, and the power put into the water by pumping it is
> transformed to heat, raising the temperature of the water. This can cause
> cavitation under some conditions, when you get to a suction pressure less
> thant the vapor pressure of the fluid.
> Bill Schertz
> ----- Original Message -----
> From: <echristley@nc.rr.com>
>
>
> > Forgive me for being slow here, but there are quite a few more lines on
> this graph than I'm used to.  Does this graph say that as the head
pressure
> rises to 100ft, it raises the water temp by about 40 degree,and yet uses
> nearly 10HP to do it?
> > Content-Type: multipart/alternative;
> > boundary="----=_NextPart_001_0A85_01C39682.B1BBDDE0"
> >
> >
>
>
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