4 ms·
The problem is demand will vary the same for all those in the same locality with time of day. Now, if you could somehow form a grid with people on the opposite
by hyperpallium 10y ago
The problem is demand will vary the same for all those in the same locality with time of day.
Now, if you could somehow form a grid with people on the opposite side of the globe...
BTW I like the idea of hydrobatteries: hydroelectric power stations sometimes pump water back up into the resevoir. One could do this with local water towers; perhaps even dual-purpose existing rain tanks, per house. Maybe not large enough; haven't done the math.
- MrsPeaches 10y agoHere you go: E = mgh 1000l tank = 1000kg 7m high roof (~2 stories) E = 1000kg * 9.81ms^-2 * 7m =~ 70 000j 1Wh = 3600j So a 1000l tank on your two story high roof would be able to store ~19Wh Not including mechanical losses For comparison a single decent sized SLA battery will be able to store 1000 Wh
- hyperpallium 10y agoThanks! Not as good aa I'd hoped...
- LeifCarrotson 10y agoThe numbers work better with increasing size, because volume is the cube of the dimensions. Also, you can build a pond on a hill with some excavators much more efficiently per unit volume than an enclosed plastic container. A 1m cube weighs 1,000kg and has about 20Wh. A 10m cube weighs 1,000,000 kg and has about 20,000 Wh. A 50m deep, 1 km square reservoir has 1,000,000 Wh. And that's still assuming that it's 7m above the turbine!