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Upside down pumped storage

 
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biffvernon



Joined: 24 Nov 2005
Posts: 18551
Location: Lincolnshire

PostPosted: Thu Jan 24, 2013 11:38 pm    Post subject: Upside down pumped storage Reply with quote

http://www.renewableenergyworld.com/rea/news/article/2013/01/belgium-plans-to-build-island-to-store-excess-wind-energy

Instead of storing the water in a high place and then letting it run down a hill they will store a hole in the sea and then let it fill up. I love Belgium.
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emordnilap



Joined: 05 Sep 2007
Posts: 13970
Location: Houǝsʇlʎ' ᴉʇ,s ɹǝɐllʎ uoʇ ʍoɹʇɥ ʇɥǝ ǝɟɟoɹʇ' pou,ʇ ǝʌǝu qoʇɥǝɹ˙

PostPosted: Fri Jan 25, 2013 11:41 am    Post subject: Reply with quote

Brilliant idea if it can be put into practice. I hope it can - it could be a solution for many countries, including ours.
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adam2
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Joined: 02 Jul 2007
Posts: 6208
Location: North Somerset

PostPosted: Fri Jan 25, 2013 2:47 pm    Post subject: Reply with quote

No reason why it wont work at least to an extent, but I have my doubts about it making economic sense.
I can forsee severe practical difeculties in making the water level in the island much below the surrounding sea level.
A relatively large difference is required to store a lot of energy, and with a large difference in height I suspect that the walls might collapse and the sea come in.
Add winter storms trying to wash the whole thing away and I fear a costly failure.
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