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Wind Power

Kenyan Wind Turbine: Bike Parts and Roofing Iron

In Eastern Kenya the four Ututu brothers inherited a large area of fertile farmland, which had been terraced by their father in the late 1950s. Despite this resource, they were experiencing problems because they lacked water both for drinking (meaning wasted time, fetching water from 9 miles away in the dry season) and for irrigation.

The Ututu brothers drilled their first successful well in 1997 where water was found at a depth of 30 feet. One of the brothers, Joseph Ututu, designed a working wind-pump to try on one of the wells. He and his brothers constructed the moving parts mainly from spare bicycle tires, and made the sails from corrugated steel roofing sheets. Joseph is particularly proud of the enclosed pulley mechanism, which has so far worked for six years without maintenance. The wind-pump is fixed in position and faces the prevailing wind. At night, when the wind picks up, the sails turn very fast, clanking and creaking as they turn. Every night, the turbine pumps over 1,000 liters of water.

While it may seem extraordinary that wells had not be “discovered” in this part of Kenya until the last decade or so, the Ututu brothers have certainly capitalized on their initiative. There is a good market for water, and from the income earned they have managed to educate all their children. They have also raised vegetables for food and for sale on a small horticultural plot close to the wells. Since they began, more than 30 wells have been dug by neighbors.

Wells and wind-pumps are hardly revolutionary technologies; nevertheless their development by the Ututus has revolutionized the local water supply. With improved technical knowledge, people gain the tools to make the most of their own imaginative design capability to solve local problems in the most relevant way. We should therefore recognize and encourage initiative where it occurs, and support such creativity with “scientific” knowledge.

Via: Afrigadget and Farming Solutions

 

Atlanta's Solar / Wind Powered Aquarius Tower



OK, I know where I want to live. I've been thinking about Georgia for a while, but I dread the labyrinthine freeway system of Atlanta. But the new Aquarius Tower in downtown Atlanta offers more than any other American building I've seen yet.

Yes, it's wired for high-speed internet and surround sound. Yes, it has a robotic car parking system that decreases driving time. Yes all 113 units have south-facing windows overlooking Centennial Park. But the building also has integrated wind turbines and solar panels decreasing the amount of power residents pull from the grid.

The wind turbines are specially integrating into the building. In fact, the building acts as kind of a wind-collector, that channels and concentrates winds into the turbines.

Of course, the one bedroom units are $300,000, and the penthouses top out at $2.5 million. But it's safe to say that it's a good investment. If all goes well, we can all start moving in at the end of 2009.

Via MetaEfficient and Go Dekalb
 

World's Largest Offshore Wind Project?

England has begin planning the largest ever offshore wind project in history. Three Hundred and Fifty gigantic wind turbines would supply enough power for around 1,000,000 homes. The farm could produce over half of the power for all of South West England.

Unfortunately, the farm is still in the planning stage. Even if they go ahead with the project in the next year, the project won't be at full capacity for another decade. However, if we want to live in a sustainable world, these long-range, massive projects are exactly what we need to see more of.

We'll have our eye on this one, if South West England is going to lead the way for sustainability in the developed world, then we're behind them 100%.

 

Gumming Up the Works: Bugs and Turbines

There's been a lot of bird mortality talk surrounding wind turbines. However, it turns out that's not so big of a deal compared with bug mortality. Just like a car flying down the highway, wind turbines slice through the air extremely quickly. And just like a car, they slowly get covered in a film of bug juice that, over time, can decrease the efficiency of the turbines by up to 25%.

Now, as you might imagine that cleaning a turbine blade is no gas-station squeegee operation. Shutting down the turbines and getting crews to pressure clean the massive turbine blades only compromises efficiency further. If only mother nature would recognize when we were trying to help!

Via Celsias
 

Twirling Tower Could Power Itself, Ten Others.

A noobie architect decides that he's obviously the best guy to revolutionize office buildings and, next thing you know, he's designed a wind-powered rotating skyscraper.

While the technical details of the wind-power system are sketchy at best, the architect, David Fisher, claims that the tower could power itself and ten other similar sized buildings. Frankly, the claim seems somewhat outlandish, but even if it produces just it's own energy, it would be a significant achievement.

Fisher has proposed that towers be built in a new way, basically by stacking platters on a central concrete core. This will allow for two unique and awesome features. First, a wind turbine between every floor (see image above) and, second, rotating floors.

While the rotating floors have gotten quite a bit of press, really the most amazing claim is that the tower could provide all its own electricity. If true, this design could indeed mean a remarkable and sustainable future for skyscrapers. Totally awesome. And, as Fisher predicts that the first tower will begin construction in Dubai in the next six months, and is currently talking with the City of Chicago about their own twirling tower, it may not be as far-fetched as it seems.

Oh, and if you want to see the thing spin, there's a video after the jump.

 
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