World-first wooden wind turbine starts spinning in Germany The prototype TimberTower constructed in Hannover, Germany Image Gallery (6 images) Getting a wind turbine to a decent height to allow it to reach stronger winds than those found closer to the ground generally means sitting them atop a tower. SheerWind claims its INVELOX wind turbine produces 600% more power (Phys.org) —SheerWind Inc. of Chaska, Minnesota is claiming in a press release that its newly developed funnel-based wind turbine system is capable of producing 600 percent more power than conventional wind turbines. The new design uses funnels to channel wind to a ground-based turbine. The idea behind the INVELOX system is to capture wind using wide mouthed funnels and channel it via ducts to a turbine sitting at ground level. The wind picks up speed as it is concentrated through a series of nozzle and pipes before it is delivered to a turbine, which produces electricity.
Renewable Energy Sector Promises Jobs in Tunisia The launch Monday of a Tunisian-German government partnership focusing on renewable energy could help create jobs for young graduates, according to those involved in the initiative. The vast solar resources in Tunisia’s southern Saharan region have long been considered a potential source of alternative energy, and the recent partnership between the two countries will guarantee the implementation of many pending renewable energy projects in Tunisia, said Yasmina Sassi, a renewable energy project manager at the German-Tunisian Chamber of Commerce and Industry (AHK). Clean energy can help boost employment, Sassi told Tunisia Live, particularly for regular laborers, construction workers and engineers.
Kite power getting off the ground in Germany Despite offering numerous advantages over its rotating brethren, most notably the ability to reach the high-speed winds found at higher altitudes, kite-based energy systems are yet to really get off the ground in a meaningful way. But things are looking up. Earlier this year, NASA revealed it is investigating ways to improve the aerodynamics and autonomous flight control of kites for power generation applications, and now Berlin-based wind energy developer NTS GmbH has teamed with the Fraunhofer Institute for Manufacturing Engineering and Automation (IPA) to make their own kite energy system concept a reality. The team’s “kite power station” would see kites attached to cables measuring around 700 meters (2,297 ft) long, which would allow the kites to fly at heights of 300 to 500 meters (984 to 1,640 ft). “The energy yield of a kite far exceeds that of a wind turbine, whose rotor tips turn at a maximum height of 200 meters.
DARWIND5 wind turbine improves on an old design Ontario, Canada has carved out a niche for itself as a hub of green technology. One of the latest clean tech innovations to come out of that province is DARWIND5, a vertical axis wind turbine (VAWT). Designed by Harvistor, it comes with a promise of more oomph than existing models for small-scale wind power generation.
Delft professor puts kites high on list for renewable energy (Phys.org) —The word "kite" at the Delft University of Technology hardly means summertime fun and recreation. Rather, scientists see "kite" as an important airborne wind technology, with advantages lacking in wind turbines. The university's kite team are encouraged by recent tests in a field near the aerospace engineering department at the university.
The Sky Is the Limit for Wind Power Wind turbines on land and offshore could readily provide more than four times the power that the world as a whole currently uses. Throw in kites or robot aircraft generating electricity from sky-high winds and the world could physically extract roughly 100 times more power than presently employed—and the climatic consequences remain minimal. Two new computer-model analyses suggest there are few limits to the wind's potential. Although "there are physical limits to the amount of power that can be harvested from winds, these limits are well above total global energy demand," explains climate-modeler Kate Marvel of Lawrence Livermore National Laboratory, who led the analysis published September 9 in Nature Climate Change. Siemens unveils world's largest wind turbine blades Siemens has released pictures of its truly gargantuan B75 wind turbine rotor blades. As you might imagine, the prototype turbines that will use these blades boast some staggering statistics of their own (Airbuses at the ready, please). View all Remarkably, the 75-meter-long (246-ft) blades consist of a single component made from epoxy resin and balsa reinforced with glass fiber, cast in a gigantic mold using a process Siemens has cunningly named IntegralBlade. Initially, three B75 blades will be put to use in a prototype 6-MW offshore turbine at Denmark's national test center at Østerild.
S.Africa unveils wind atlas in renewable energy push South Africa on Tuesday launched its first verified wind atlas which maps out potential hotspots as a tool for wind farm developers as the coal-hungry country pushes toward renewable energy. The atlas models the wind climate in three coastal provinces, which is backed up by measured data from 10 masts which can be used for further studies to investigate if a location is viable for turbines. "This is an opportunity for investors -- this is an opportunity for them to invest in our green economy," said deputy energy minister Barbara Thompson. South Africa wants renewable energy to make up 42 percent of all new power projects as it aims to cut its overwhelming coal reliance, from 90 percent to 65 percent of the power supply by 2030, with major investments expected in nuclear and renewables. Wind energy is vastly undeveloped in South Africa and the wind atlas project cost 22 million rands ($2.9 million, 2.3 million euros), funded by the UN Development Programme and the Danish embassy.
Under the Tunisian Sun: Expanding Solar Energy Production for Autoconsumption and Export I – Sustainable Development and Solar Energy A Nawaat article demanding a «sustainable development revolution» in Tunisia outlines some of the most essential reforms necessary in order to comply with the 1987 United Nations Brundtland report definition of “development which meets the needs of the present without compromising the ability of future generations to meet their own needs.” Energy Strategy: Exploring Solar Potential Solar energy, of which the potential in Tunisia is significant, must be promoted much more than it is today … the energy efficiency of industrial photovoltaic1 installations and practices must be reevaluated … promoting or requiring photovoltaic installations and solar water heaters in collective buildings should also be considered. This would help especially to counter the peaks in consumption observed during the summer months due to individual air conditioning and the increased energy consumption of refrigerators.
WWII veteran creates bird-friendly wind turbine Military veteran Raymond Green created the Catching Wind Power prototype at an estimated cost of US$550 Image Gallery (17 images) World War II veteran Raymond Green, an 89 year old resident of Jackson, California, has created a working prototype of a "bladeless" wind turbine which is bird and bat-friendly, and very quiet in operation. Though still in development at present, Green intends his design to be produced in various sizes, from smaller personal versions to much larger turbines which could be implemented in wind farms.