194
'No-water' hydropower turns England's hills into green and pleasant batteries
(www.rechargenews.com)
this post was submitted on 17 Aug 2023
194 points (96.6% liked)
Technology
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Very cool. Do we know what the fluid is? Does it pose any health risks if it somehow leaks into the groundwater?
It's just good ol' fashioned mercury.
The article claims it's 2.5x as dense as water, which according to this density chart is probably bromine.
I actually bet it's just very very fine stonedust and water in suspension.
I'm not sure which would be worse for the machinery
Supposedly it's exactly that, but stabilized by a polymer to keep it in suspension for up to 60 days without mixing. https://online.flippingbook.com/view/1025707592/10/#zoom=true
Edit: I've concluded it's likely calcium carbonate.
rotor blades are going to love this
https://www.rheenergise.com/
They're saying it's minerals and a polymer. In that case even a leak into groundwater would just be leaking groundwater. (Depending on what the polymer is)