John Polk wrote:
The idea is good, but can it be done cost-effectively? To get the water into your tank, you will need a more powerful pump (and motor). The cost of a tank large enough to be of use (plus the cost of the tower) would probably be greater than a PV panel that could provide more watts.
Brenda Groth wrote:
keeping this up near to top to get more input, this is very interesting, you know I never thought of using the water from the eaves to turn a generator, with all the rainstorms we have had this spring it would have charged a lot of batteries..even with just a simple auto type generator..maybe even off of some rain barrels or just something put into a drain??
With perfect efficiency in your system you'd get about 17 watts of energy continuously for the hour. With realistic efficiencies probably more like 5-10 watts.
I'm afraid that's not much.
It would keep one CFL lit for the hour, maybe.
That would be cool I guess!
Dander: Do a little research on water wheels and in stream turbines, many types have efficiencies in the 80-90%range.
Read a short article in Farm Show, vol 34, no4, 2010, "Home-Built Water Wheel Generates Electric Power." The water wheel they built to work off of channeled water from their spring-fed pond is attached to a 100-watt generator. The generator preheats water at his son's house.