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Author
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Topic: Looking for a certain type water pump
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Dan
Member Posts: 1
From:Texas, USA
Registered: Jul 2003
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posted July 03, 2003 03:02 PM
  
I am trying to research a type of water pump, but not an Archimedes Screw. What I heard about was a pipe some 10' long, inserted into a stream's fall of a few feet, with propellers inside the pipe. If we tap the pipe in the upper half, then water will be pumped out of this orifice due to pressures caused by the propellers. I think Bernoulli may have invented this water pump. It is self powered by the speed of the stream's current, I think.
Thanks for any ideas on naming this invention.IP: Logged |
zabielski
Senior Member Posts: 175
From:McHenry, IL USA
Registered: Nov 2002
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posted July 04, 2003 11:33 AM
So far, I'd name this invention at this time as the "NO-NO-PUMP". Until you have something in hand, nothing occurs. Your propellers speeds need to over exceed the speed flow of water to "pump" the water anywhere. This requires a pressure increase, and that is how turbines evolved. They really are a combination of a screw/propeller design. Simply speaking, all one would be doing is to divert water - and downwards at that. You may wind up with less water than anticipated if you insert propellers, as these will add friction. There is no true self-prepetual motion pumps that can increase pressure that I know of. The closest thing that I can think of however, is a simple water wheel used in milling operations. These are rare to come by these days. Why? Inefficiency due to the constant change of water streams and velocity. Try doing a search on Beroulli, as I believe his theroms were for gases which expand in equal dimentions and pressures inside a closed vessel when heated or "pressurized". IP: Logged |
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