Me thinks you need to go back and read about how pumps work Mr.
Broughton. Your wrong.
On Wed, 14 Jun 2006 10:14:57 -0300, Derek Broughton
wrote:
PlainBill wrote:
On Tue, 13 Jun 2006 11:21:17 -0300, Derek Broughton
wrote:
You're confusing a law of physics with efficiency. A suction pump
cannot lift water more than 32 feet because atmospheric pressure is
14.7 psi.
No, I don't believe I am - I'm pointing out that those laws of physics
_affect_ the efficiency.
Even that is not strictly true - the motor and impeller of
a jet pump can be more than 32 feet above the surface of the water,
Of course it's strictly true. A jet pump is NOT a suction pump.
Use this analogy: You have a heavy object, suspended by a rope. The
Lousy analogy. Precisely because it does _not_ work the same way as
suction.
As I said before, for a given pump, the efficiency is the same pushing
or pulling.
And as I said, it doesn't matter as long as the two pumps are at the same
level relative to the water line - we can keep repeating ourselves forever
if you want.
The BIG variable is the pump itself. Then laying out the plumbing
with as few turns as possible.
Absolutely.
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