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Author Topic: crazy off- shore wind idea ?  (Read 1569 times)
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« on: May 26, 2016, 03:10:21 PM »

.... me not sure if that is  totally wrong ,  to use wind turbine towers as compressed storage ideas ,  and to connect turbine towers  on-top   to reduce foundations  for  off shore

not so sure if those PV sails make sense

Probably totally   mad  wackoold

 sh*tfan ?

austrian  presentation here


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« Reply #1 on: May 26, 2016, 04:48:35 PM »

The sails are particularly daft.  Wind machines can barely survive severe storm conditions offshore  as it is.  The hydraulic system  would  make the structures very  expensive and possibly unstable as well.     The air storage bag in deep water  is potentially  the cheapest  because it uses the weight of the sea but nobody seems to be interested in spending  enough to design and build the  airbags which need to have multi layers  of insulation to  retain compression heat.     

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« Reply #2 on: March 15, 2017, 08:25:31 PM »

Don't know why I didn't see this earlier, but...
I agree that the sails are daft, but I read in New Civil Engineer that the Norwegians are looking at long suspension bridges built off floating platforms!  It seems that their oil rig experience says that big heavy concrete floats might be OK even for holding up the cable towers.  Apart from the embedded energy and CO2 emissions of the concrete, why not?

And if it works, I would think that as a wind energy platform that could incorporate an air storage feature it would really be a good idea.  Compressed air down below wouldn't decrease the buoyancy of the platform significantly, would it? and you could have it either open at the bottom or a sealed reinforced concrete container depending on how much energy you wanted to store... (if the amount of concrete used didn't totally wipe out any renewable energy benefit)
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