Flexible wind turbines are more efficient

February 27, 2017

It has been discovered that if you use flexible blades on a wind turbine it can dramatically increase its efficiency. A small team of researchers with Sorbonne Université and École Nationale Supérieure des Arts et Métiers-ParisTech published a paper in the Proceedings of the Royal Society A, and described their approach and the results they obtained through physical testing of their idea. After many years of research, modern wind turbines…

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Ultraviolet light used to convert carbon dioxide into fuel

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February 23, 2017

Tiny nanoparticles that help convert carbon dioxide into methane using only ultraviolet light as an energy source have developed by researchers at Duke University. Having found a catalyst that can do this important chemistry using ultraviolet light, the team now hopes to develop a version that would run on natural sunlight, a potential boon to alternative energy. Chemists have long sought an efficient, light-driven catalyst to power this reaction, which…

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Redox flow batteries for renewable energy 1,000 times more stable

chemistsimpr
February 21, 2017

Solar utilities need a way to store extra charge for a rainy day. The same goes for wind power facilities, since the wind doesn’t always blow. To take full advantage of renewable energy, electrical grids need large batteries that can store the power coming from wind and solar installations until it is needed. Some of the current technologies that are potentially very appealing for the electrical grid are inefficient and…

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Ponds to accelerate climate change with methane

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February 21, 2017

By reducing the amount of carbon dioxide stored in ponds and increasing the methane they release, new research shows that rising temperatures could accelerate climate change. The scientists experimentally warmed an array of ponds over seven years by 4-5°C and studied the impacts on greenhouse gas emissions and rates of metabolism. Changes observed after the first year became “amplified” over a longer period, according to the study by the University…

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Hydronium-ion battery holds promise for sustainable energy storage

Developed by scientists at Oregon State University, a new hydronium-ion battery shows promise for sustainable, high-power energy storage. It’s the world’s first battery to use only hydronium ions as the charge carrier. The new battery provides an additional option for researchers, particularly in the area of stationary storage. Stationary storage refers to batteries in a permanent location that store grid power – including power generated from alternative energy sources such…

February 21, 2017
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Boat to produce hydrogen from the ocean for clean energy storage

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February 21, 2017

In a bid to prove the effectiveness of hydrogen as a renewable fuel, Victorien Erussard and Jérôme Delafosse will sail around a world in a boat powered by the gas – made from the elements they encounter on the way. “The problem is that 95 per cent of the hydrogen that you use already is made out of fossil energies,” says Delafosse. “We will produce hydrogen onboard from the ocean, we…

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Renewable energy too slow to cap global warming

renewablesimageee
February 8, 2017

Scientistt have reported in the journal Nature Climate Change that even if solar and wind capacity continues to grow at breakneck speed, it will not be fast enough to cap global warming under 2°C (3.6°F), the target set down in the landmark 2015 Paris climate treaty. “The rapid deployment of wind, solar and electric cars gives some hope,” lead author Glen Peters, a researcher at the Center for International Climate…

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Switch to biofuel cuts aviation emissions

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February 8, 2017

Cathay Pacific, Hong Kong flag carrier, will switch to biofuels made from landfill rubbish on select long haul flights, reports said Tuesday, in an effort to cut harmful emissions. Cathay flights to Hong Kong from the US, where the new fuel is produced, will use a combination of conventional jet fuel and biofuels starting in 2019, the South China Morning Post reported. The airline hopes to cut emissions on those…

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Multi-energy-harvesting device to push IoT development

energyimageee
February 8, 2017

Researchers from the University of Oulu in Finland have found that a mineral with the perovskite crystal structure has the right properties to extract energy from multiple sources at the same time. Perovskites are a family of minerals, many of which have shown promise for harvesting one or two types of energy at a time—but not simultaneously. One family member may be good for solar cells, with the right properties…

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Making the swap to LED lights

smartbulbimageee
February 6, 2017

Unfortunately, LED lights have been swept up into the whole ‘smart home’ mess, with app-controlled dimming and hue adjustments, making them both costlier and more complex than they need to be. So for most they’ve always been filed away alongside things like ZigBee, SmartThings, and AllJoyn. But what about the simple LED light bulb, the one that just plugs into the place of ye olde incandescents and does only one…

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