Tuesday, July 17, 2007
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welding the 8 inch penstock
penstock welding
Moving PVC Trash Rack Screen
Trash conveyor lifted up for inspection.
About Me
- Rob
- Cuddebackville, New York, United States
- I am a retired electronics engineer, educator, businessman and builder of micro hydro installations for fun and sometimes even profit. This one uses a pump/motor as a turbine/generator using a 200 ft waterfall in our back yard. It is currently producing 15KW. I will be tweaking it to take advantage of greater winter flows. It's not the product, but the process... I enjoy doing the most with the least. So this renewable energy source cost less than $2 per watt of capacity not counting any labor and engineering.
The intake box, high water.
Motorized 4 inch butterfly valve.
Rewinding the ASCO switch solenoid.
UNWOUND
Pumps as Turbines have many advantages.
PaTs Explained
Keep water pipes from freezing.
Not insulated or not burried deep enough?
Water Intake, Dealing with Rocks & Logs
Water Intake now has MOVING SCREEN TRASH RACK.
Inside Power House
ITT pump/turbine & 30HP 3Phase motor/generator
2 comments:
I have considered this arrangement as well, for a utility feedback arrangement, however, as you may or may not be aware, the phase difference would prevent that from working, without leaving the neutral disconnected from hydro output to grid...your generator has 120 degrees of phase difference between phases, and the utility has 180 degrees difference (as all center tapped transformers have). Just wondered whether you had considered this.
I feed back to the utility through the transformer as single phase or 240V center tapped, sometimes referred to as split phase or 2 phase. So my 3 phase induction generator primarily uses two of its windings and the capacitors to generate 480V single phase. This is stepped down in the transformer to 240V split phase (120V each side to the grounded center-tap.
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