Mechanical Pumps and Pressure Boost

say what?

Can you post a sketch?

No I don't have a sketch. Mount the suction of your pump in a pool of water before it enters the pipe feeding the turbineHave your pump shaft with fins on it extend back to where the main flow enters with a pipe feeding the fins on about a 30 to 45 degree angle. This turn the shaft which in turn turns the impeller and forces water out the discharge end. Have a hole cut in the pipe that feeds the turbine close to where the water enters the pipe have a pipe welded into it on about a 10 to 25 degree angle and connect the discharge end of the pump to it. This should increase the static head or psi in the pipe therefore increasing the feet head. This should work it doesn't go against any laws of mathematics or power generation. You are just adding an external force that isn't powered by electricity but by mechanical energy from the force of the water. How much more additional pressure could be achieved by doing this. Just thinking outside the box.

_{Psssssssssssssssssssssst! Ever heard of Bernoulli's Equation?} <Wheeze>

I'm in for your Bernoulli Equation, and I'll raise you to Conservation of Energy.

I'm calling you, and raising Avogadro's number.

Hi

If understood correctly you want to introduce a pump in the inlet piping of a turbine to boost the pressure. You also seem to want the flow of water (or the turbine) to drive this pump.

Yes it should be possible to use a pump and motor to boost the pressure but the additional power generated by the turbine will at most be 70% of the motor input. Not a good idea.

Using the flow is also a bad idea. The obstruction in the line will reduce the head and the flow to the turbine.

You almost understood it correctly. The pump will be placed before the water enters the pipe for the turbine. The pump will not be run by a motor but by the water flow before it gets to the turbine pipe, it will be fed by a seperate pipe, the water flow is 3 miles per hour. The water discharge will be fed into the pipe going to the turbine maybe 1 ft down from where the water enters the pipe. This should help boost the pressure for people who can't achieve much vertical head. The pump shaft would have to have vanes on the end and be fed by a 3 or 4 inch pipe whatever size would work best. Approximately how many rpm's would the shaft turn with the water speed of three mph

Is this an over-unity energy device?

Well, it depends on the numbers.

The large volume, low head flow could drive a very high pressure, low volume pump that could drive a turbine. Remembering that you'll still be getting the same amount of energy as before BUT minus all the losses in the system.

My first guess is that it'd not be worth doing. Better to get a different sort of turbine/water wheel that's optimised for your conditions.

It is not meant to drive the turbine but to boost the pressure in the line going to the turbine and help drive the turbine