Hello,
I've just picked up some land in Eastern Canada, and I'm looking to move there full time with my family. We are far from the public grid, but the land holds a small lake created by the dam pictured in the attachments.
A bit of info on the dam:
Each sluice is 5'10. As winter took hold of the land, the flow fell from 132gal/s in November to 80gal/s yesterday (Jan 8th). The springtime flows must be very high and summer flows higher than November.
The initial drop is 6ft4.
I can adjust the height of each gate to potentially concentrate flow on one side or raise the initial drop.
I'd like to pull 3kw to a battery bank in the cottage 400ft from the dam (more if possible due to electric vehicle charging).
I'd prefer an overshot waterwheel with a short flume in the existing structure. From online power tables, it seems I'd have enough flow to achieve the required energy output but I don't know how low the water could get in say Feb, nor what efficiency level I can really achieve.
Plan B, if I build a 250ft penstock from the structure, I can deliver another 35ft of vertical drop and feed that pressure into a turbine. But every foot of penstock takes me further from the cottage, requires hard to get permits to work the ground near the riverbank and would have to be buried as winters get very cold up here and the forest is old and dense: treefall risk is very high.
Questions: Is the project credible? What am I missing? Where can I find a waterwheel? Or waterwheel plans? How should the wheel buckets be shaped considering my water flow can vary quite a bit, or does that not really matter? What should I aim for in terms of water wheel width? What transmission mechanism would you recommend from shaft to generator and what generator could make sense?
Any help is appreciated
Happy new year,
JD