Wind Energy

Fri, 09 Nov 2018 17:26:23 UTC

Making wind farms more efficient

With energy demands rising, researchers have completed an algorithm -- or approach -- to design more efficient wind farms, helping to generate more revenue for builders and more renewable energy for their customers.read more
Mon, 05 Nov 2018 15:54:48 UTC

Magnetic pumping pushes plasma particles to high energies

The solar wind is not a calm summer breeze. Instead, it is a roiling, chaotic mess of turbulence and waves. There is a lot of energy stored in this turbulence, so scientists have long thought that it heats the solar wind. However, the heating expected from turbulence is not the heating observed. Scientists now have a new idea about what heats the solar wind, a theory called magnetic pumping.read more
Thu, 11 Oct 2018 17:34:05 UTC

Opening communication lines between propulsion and airflow poses new questions

On the runway to more fuel-efficient aircraft, one alternative propulsion scheme being explored is an array of electrically powered ducted fans. The fans are distributed across the wing span or integrated into the wing. Researchers have gained new understanding in how the fans and especially their precise placement on the aircraft can affect the cross-conversation between propulsion and the airflow around the wing.read more
Thu, 04 Oct 2018 17:18:21 UTC

Windier wind farms

Depending on how wind turbines are situated relative to each other and to the prevailing wind, those not directly in the path of the wind could be left to extract energy from significantly depleted airflow. However, according to researchers, there are ways to get around this issue of diminishing wind returns.read more
Thu, 04 Oct 2018 15:25:53 UTC

Large-scale US wind power would cause warming that would take roughly a century to offset

Extracting energy from the wind causes climatic impacts that are small compared to current projections of 21st century warming, but large compared to the effect of reducing US electricity emissions to zero with solar. Researchers report the most accurate modelling yet of how increasing wind power would affect climate, finding that large-scale wind power generation would warm the Continental United States 0.24 degrees Celsius because wind turbines redistribute heat in the atmosphere.read more
Thu, 27 Sep 2018 14:56:47 UTC

Smart devices could soon tap their owners as a battery source

The world is edging closer to a reality where smart devices are able to use their owners as an energy resource, say experts.read more
Thu, 20 Sep 2018 14:16:05 UTC

Physicists train robotic gliders to soar like birds

Scientists know that upward currents of warm air assist birds in flight. To understand how birds find and navigate these thermal plumes, researchers used reinforcement learning to train gliders to autonomously navigate atmospheric thermals. The research highlights the role of vertical wind accelerations and roll-wise torques as viable biological cues for soaring birds. The findings also provide a navigational strategy that directly applies to the development of UAVs.read more
Thu, 06 Sep 2018 18:16:11 UTC

Large wind and solar farms in the Sahara would increase heat, rain, vegetation

Wind and solar farms are known to have local effects on heat, humidity and other factors that may be beneficial -- or detrimental -- to the regions in which they are situated. A new climate-modeling study finds that a massive wind and solar installation in the Sahara Desert and neighboring Sahel would increase local temperature, precipitation and vegetation. Overall, the researchers report, the effects would likely benefit the region.read more
Wed, 05 Sep 2018 16:47:47 UTC

Wind turbines: How much power can they provide?

Wind turbines could cover 40 percent of the current electricity consumption in Germany.read more
Tue, 04 Sep 2018 15:46:22 UTC

3D printed impeller allows unmanned aircraft to operate for thousands of hours

Engineers are developing a cooled, radial gas turbine for a small generator that provides thousands of hours of electricity to an unmanned aerial vehicle (UAV), a significant improvement to current UAV turbines that only operate a few hundred hours before wearing out.read more
Fri, 31 Aug 2018 19:01:59 UTC

A new way to remove ice buildup without power or chemicals

Researchers have found a way to prevent icing of powerlines, airplanes, wind turbines, and other surfaces with a special coating and the power of sunlight -- no heating or harsh chemicals needed.read more
Tue, 28 Aug 2018 12:59:06 UTC

The science behind blowing bubbles

What exactly happens when you blow on a soap film to make a bubble? Behind this simple question about a favorite childhood activity is some real science, researchers have found.read more
Thu, 26 Jul 2018 20:12:55 UTC

Europe may thrive on renewable energy despite unpredictable weather

Researchers have shown how long-term weather patterns affect wind and solar renewable energy technologies across Europe. The work suggests that despite the unpredictable nature of wind and solar energy, the European power system can comfortably generate at least 35 percent of its electricity using these renewables alone without major impacts on prices or system stability.read more
Wed, 11 Jul 2018 14:55:39 UTC

Different strategy of cycling teams in escape attempts

A new study based on wind tunnel research on a peloton of 121 cyclists may explain why so few 'breakaways' in professional cycling races, like this year's Tour de France, are successful.read more
Mon, 09 Jul 2018 14:46:05 UTC

Oil rigs may end their days as valuable artificial reefs

A large group of international researchers have just published a scientific article in which they encourage environmental authorities across the globe to rethink the idea of removing oil rigs, wind turbines and other installations in the sea when they are worn out.read more
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