asteroza + energy + blade   21

Home - The Archimedes
Some sort of weird spiral blade horizontal wind turbine, with an alleged 80% Betz efficiency...
HAWT  spiral  blade  achimedes  screw  wind  turbine  power  generator  green  energy  Delicious 
may 2014 by asteroza
Crowdfunding Renewable Energy - Ocean Energy Turbine
Odd VAWT using feathering/oscillating blades, as a water current turbine.
venetian  blind  ocean  river  tidal  current  water  turbine  power  generator  oscillating  blade  feathering  VAWT  vertical  green  energy  Delicious 
april 2014 by asteroza
Ecowhisper
Interesting wind turbine design, basically gives up on trying to capture energy from the center, and tries to capture tip shedding vortexes. Also it may not be obvious but it appears to use diffuser rings and is swept forward so air gets funneled towards the center, but the center hub cone forces the air back out towards the edges, possible increasing local velocity. A little surprising they don't fair the backside of the hub. Appears to use active tracking rather than a passive guide vane. Weight is an issue for a ringed fan design like this, so it won't scale up to megawatts, but since their target is quiet operations in residential areas, that isn't such a big deal.
wind  turbine  power  generator  green  energy  forward  swept  blade  annular  diffuser  ring  Delicious 
november 2011 by asteroza
Swift Wind Turbine - Home
These guys seem to use a solid rotor ring. Maybe some kind of trick to even out power output from a small rotor device by increasing it's rotational inertia? But wouldn't that make it harder to start in light breezes?
rotor  blade  ring  wind  turbine  power  generator  green  energy  small  form  factor  Delicious 
november 2010 by asteroza
Winflex Wind Turbine
Now this is an interesting concept. Using an inflatable ring, you have a tension structure that's lightweight. The ring probably doubles as a venturi wind focuser as well. I wonder what sort of inflation pressure you need though.
Winflex  inflatable  rotor  blade  ring  wind  turbine  power  generator  green  energy  israel  lightweight  Delicious 
november 2010 by asteroza
BBC - Earth News - Wind turbines wrong colour for wildlife
I wonder if they need to do something similar for offshore wind, and whether coloring alone would do any good.
bird  bat  wildlife  kill  prevention  method  wind  turbine  blade  color  purple  green  energy  Delicious 
november 2010 by asteroza

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