TimberTower: a High-Tech Wind Turbine, Made from Trees

Timbertower Our article on industrial windmills appeared on The Oil Drum and, as could be expected, this generated many interesting comments. One in particular was made by a reader named “anyone“, who sent in a link about a high-tech wind turbine placed on a tower made entirely of wood.

So while we suggested to redesign traditional windmills by using modern, high-tech materials, the German company TimberTower proposes the opposite: redesign modern wind turbines by using traditional, low-tech materials.

Large wind turbines are usually made of steel, and while they definitely deliver more energy over their lifetime than it takes to produce them (contrary to small wind turbines), using no energy at all would of course be even better – and cheaper.

Wood is easier to transport (the TimberTower is manufactured out of glued laminated timber panels which are assembled on-site), doesn’t need to be mined, has no corrosion issues (think of offshore turbines), and it captures carbon. And while trees bend in strong winds, they usually don’t break.

Using a timber tower for a 100 metre high wind turbine can save approximately 300 tons of sheet steel, writes the company at their website. One “TimberTower” also ties up approximately 400 tons of CO2. They say they can build them as high as 200 metres. Serial production should start in 2010. More:  TimberTower. Related: wooden pipelines, wooden bridges.

Kite Power

Kitegen 1

Italian company Kite Gen is building a full-scale 3 megawatt version (video) of its promising wind turbine concept, we learn from MetaEfficient. A large kite is drawn upward to altitudes around 800 metres, where average wind speeds are four times as strong as they are near ground-based wind turbines. The kites power turbines by rising and flying back to gound level continuously. The retrieval phase is said to require a small fraction of the power that is generated during the flight. A first prototype was built in 2006. One of the recent improvements is an automatic launching system, powered by fans. The technology generated an interesting discussion at the Oil Drum last summer. Previously: Floating windmills – energy from the clouds. Related: Kiteboating & Kite Aerial Photography.

Scale Models of Dutch Windmills

scale model dutch windmill

Penterbak shows a dozen scale models of traditional Dutch Windmills. The text is in Dutch, but that should not stop you. Above: a saw mill. Some building plans are here, here and here. Related: Wind powered factories – the history (and future?) of industrial windmills.

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DIY Low-Tech Windmills

DIY low-tech windmills

Low-tech energy revolution in Africa by William Kamkwamba and the Moving Windmills Project. Simple diagram (pdf). Image by Tom Rielly (TED).

Wind-Powered Knitting Machine

wind powered knitting machine

Finally, a real-world use for small windmills: the wind-powered knitting machine.

Guido Vigevano’s Wind Car (1335)

Guido Vigevano’s Wind Car

“Chapter XII. On the way of making a second waggon which is propelled by the wind without draught animals, and which dashes violently over open country to the confusion of all troops”

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