Let's see what he and I did.
The TURBINE is a Stainless Steel 6.40 inches diameter Fan Blower that I estimated abour 50 or so % efficiency -- later the % showed a lower value.
The Nozzle showing a lot of splashing was re-adjusted and the "Spraying" practically went away and of course the power improved because the water had better utilization.
The water available from about 2 l/s to about 10 l/sec depending on the rain, sometimes may last the whole season if the rain is more or less periodically coming down and filling the Weavers pond levels -- so it is not Texas --.
The Generator a F & P 80 size motor was set as half voltage output to generate around 120 volts AC to send the power about 100 meters ~ 300 or so feet and at the house a set of 3 transformers to bring down the voltage and to be able to set the Turbine to its best power and impedance ratio conversion. Low % losses, if Ii remember right around 1.5 or 2 %.
The Charge controller a C60 to charge a 12 volts battery set without generator ELC controller; it is not needed, when the generator is un-loaded the RPM increases to about 800 (2X the loaded RPM).
The pipe was drained and removed with the turbine before winter weather to protect the whole system from heavy flows and frezzing temperatures.
The NOZZLE again: The blades do not have the proper turbine diameter to blade width ratio -- normally it is around 17 %.
The Nozzle was installed up and not side ways to get additional power when the water passes the first set of blades and goes through the turbine center to hit the lower side blades to harvest 15 to 20 % additional power.
The Nozzle was shown in this group several months ago, see my files for the mold of gypsum for the fiberglass forming, also the Banki drawing of this Nozzle description.
He is now improving the system by replacing the Fan blower with a Small Plastic Pelton Spoons, I expect at least 15 to 20 % POWER harvesting improvement.
Nando
Nando