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Wind Power

Environment

NASA researchers aim to help get airborne wind power systems off the ground

Currently, land-based tower wind turbines are the dominant source of wind power, but they take up a lot of space and generally need to be placed in high visibility areas, such as the tops of hills or ridges. They are also located close to the ground, where friction from the Earth’s surface slows the wind and increases its turbulence, negatively affecting the efficiency of the turbines. NASA engineers are looking at technologies that would help airborne wind power systems, capable of generating much more power, get off the ground. Read More

Marine

B9 Shipping developing 100 percent fossil fuel-free cargo sailing ships

Ireland-based B9 Shipping has started work on a full-scale demonstration vessel as part of its goal to design the modern world’s first 100 percent fossil fuel-free cargo sailing ships. Unlike most conventional large cargo vessels, which are powered by bunker fuel, B9 Shipping’s cargo ship would employ a Dyna-rig sail propulsion system combined with an off-the-shelf Rolls-Royce engine powered by liquid biomethane derived from municipal waste.Read More

Science

Next-gen cargo ships could use 164-foot sails to lower fuel use by 30%

Of the world's nearly 45,000 cargo ships, many burn a low-grade bunker fuel in their engines and produce pollution equivalent to millions of automobiles. To help reduce that toxic load and keep the price of shipping freight reasonable, engineers at the University of Tokyo (UT) and a group of collaborators have designed a system of large, retractable sails measuring 64 feet (20 m) wide by 164 feet (50 m) high, which studies indicate can reduce annual fuel use on ships equipped with them by up to 30%.Read More

Environment

Floating wind turbines to produce low cost renewable energy

Altaeros Energies has announced the first testing of its Airborne Wind Turbine (AWT) prototype that resembles a sort of blimp windmill. The test took place at the Loring Commerce Center in Limestone, Maine, USA where the AWT floated 350 feet (107 meters) into the sky and successfully produced power, before coming back to earth in a controlled landing. The turbine was deployed into the air from a towable docking trailer, while demonstrating that it can produce over twice the power at high altitudes than generated at conventional tower heightRead More

Environment

Versatile Wind Harvester breaks from traditional turbine design

From huge kites to sea-bound flywheels and roof-top installations to tree-like art creations, we've seen many different approaches to capturing energy from the wind. One design, though, reigns supreme - the tri-blade turbine tower. It's not exactly a trouble-free life at the top and there are those who do not look upon these monsters favorably, most often complaining about the noise and the not so picturesque view. With support from Nottingham Trent University's Future Factory project, Heath Evdemon is currently building a new type of wind turbine called the Wind Harvester that's claimed to be virtually silent, doesn't need to loom high over the landscape and can operate in a variety of wind conditions.Read More

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