pull down to refresh

0 sats \ 1 reply \ @machuPikacchu OP 22 May \ parent \ on: The Sovereign Neighborhood DIY
As for the batteries, an alternative solution for small scale could be pumped storage hydroelectricity [1]. This wouldn't work for most applications but could still perhaps power small electronics if needed.
For fertilizer the community could still purchase that from larger markets. I'm out of my depth here, but could chickens and goats help with fertilizer? Composting? Permaculture? (jk!)
  1. https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity
write
preview
0 sats \ 0 replies \ @om 22 May
For small electronics, little lithium accus work just fine. Here, I got a cheap 10000 mAh accu from a supermarket = 10 Ah at 3.3 V (even though its nominal output is 5V, they're rated at internal voltage to scam customers) so 33Wh, converting from hours to seconds we get 336060 Wsec = 118800 J. That would be equivalent to raising 1 cubic meter of water about 118800 / 9.8 / 1000 = 12.1 meters. And that is why pumped-storage isn't used at small scale.
Fertilizer became a critical bottleneck during the height of recent inflation. You can still buy it, sure. You'd need a lot of chickens to fertilize with their poop alone...
reply