- Anyone built a waterwheel?
@doris5000 – your 6500kwh/5 = 1300kwh annual is pretty good.. UK average semi-detached is triple that [ ref: https://www.ovoenergy.com/guides/energy-guides/how-much-electricity-does-a-home-use.html ]Posted 1 month agodoris5000Member
yeah we’re a mid terrace which is unoccupied between 9am and 6pm every day so I figured we’d be on the low side. (also no kids). But the heating, hob and shower all run off gas so that probably balances it out a bit.
Might see if I can fit a water mill to the drainpipe with all this rain we’ve had lately tho!Posted 1 month ago
Good bodging and innovative use of plant pots there!
I guess you have grander plans in mind but just thinking of power simplistically here –
I counted 24 revolutions (looking at the blue pot) in a 21s ~interval when it was up to speed.
The plant pots look around 750ml and there seems to ~3 with water going down at any time.
With the 700c wheel you’re probably getting a useful drop of max 50cm.
So, I reckon this is giving you:
3 (kg) * 0.75 * 9.8 (gravity) * 0.5 (height) * (24/21) (t) = 13w absolute max :).
Not worth connecting to an alternator but it’s plenty to charge your phone with a bike dynamo! 🙂
(This does ignore the effect of the water’s momentum when it hits your buckets but I don’t think this is a big error and I rounded everything else up)Posted 1 month ago
Assuming no planning/regulatory issues I think you potentially have a good site.
A lighthearted comment: I saw some series on Youtube with millions of views- one guy spent months building a damn, chute and a few iterations of wheel. In the end he was getting 5w usable power and people loved it in the comments. As an (wannabe) environmentalist though I have to point out the concrete he used alone probably ate all the carbon emissions benefit and ignoring the youtube cash the project would be almost a pure financial loss 🙂 I’ve got half way through his new series (new house, bigger head) and he has hit 6w.
The message is clear- try to be a Youtube star rather than save the planet or your electricity bill 😀 OR do calcs and planning first to make sure expectations match reality 🙂Posted 1 month ago
Aye, could get maybe 6-7 m of head from top to bottom of the garden but don’t want to take that water out of the beck and pipe it across, hence the waterwheel, minimal ecological impact, if I can get it to power a heat store in winter with solar thermal for the summer could be a winner (wont pay economically but to offset the oil we currently use for heating and hot water potentially environmentally worthwhile)Posted 1 month ago
You must be logged in to reply to this topic.