Hydra-Light lantern doesn’t need a batteryjust saltwater

August 7, 2017 by  
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Hail, Hydra…Light? You too might be singing this portable lighting product’s praises if you find yourself off the grid without a battery to your name. Designed with campers, boaters, and outdoor revelers in mind, Hydra-Light’s range of flashlights, lanterns, and energy cells harness salt and water as its power source. Several models even come with a USB port, so you can juice up your cellphone or smart device at the same time. Each Hydra-Light features an energy cell that comprises a carbon-based membrane and a replaceable metal-alloy cylinder known as a PowerRod. When an electrolyte like saltwater—or just regular table salt and water—is added to the mix, the two elements react to generate a current. Related: Light-powered device can purify air and generate clean energy This reaction continues until the PowerRod is exhausted to a sliver, leaving only “harmless mineral sediment” behind, per the Australia-based manufacturer. “When the rod has become very thin, it is removed and a new one is inserted—which takes just seconds—making the cell like new and ready to continue generating power,” Hydra-Light said. “All that’s needed during the lifetime of each PowerRod is a periodic rinsing out of the mineral sediment and refilling with fresh saltwater. Unlike conventional batteries, the power output remains constant and does not decline over the lifetime of the rods.” Hydra-Light claims that a single PowerRod provides more than 250 hours of continuous power, which is equal to the output of about 85 standard AA batteries but at a “fraction of the cost.” (Each Hydra-Light product includes a preinstalled PowerRod.) It’s still salad days for the company yet, but the technology is nothing if not promising. For the 1.3 billion people around the world who live without electricity, Hydra-Light could prove life-changing. For the rest of us, it’s several more sets of single-use batteries we don’t have to toss out. Americans purchase—and presumably dispose of—more than 3 billion dry cell batteries every year to power our various gadgets and gizmos, according to the U.S. Environmental Protection Agency . Hail, Hydra-Light indeed. + Hydra-Light [Via Digital Trends ]

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Hydra-Light lantern doesn’t need a batteryjust saltwater

Gorgeous solar-powered greenhouse home in Sweden hits the market

August 7, 2017 by  
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If you’re looking for a gorgeous home surrounded by an idyllic landscape, this greenhouse hybrid is currently on the market for a cool $864k. Located in Gothenburg, Sweden, the A-frame residence has three bedrooms and a large, daylit greenhouse tacked on to one side. Equipped with various energy-efficient features and solar panels , the space is the epitome of green luxury living. The home itself has a beautiful interior design with white walls and polished concrete floors that create an open and airy living space. The latter, kitchen, three bedrooms and bathrooms are spread over the first two floors. However, the star of the home is located on the top floor – a massive attic space clad entirely in glass panels with exposed wooden beams, where residents enjoy stunning views of the surrounding landscape. Related: Giant greenhouse in Rotterdam doubles as a light-filled family home The new tenants won’t have far to go to the garden thanks to the massive greenhouse attached to the home. Surrounded by floor-to-ceiling glass panels and exposed wooden beams, the greenhouse was designed to provide a perfect climate for growing a variety of fruits and veggies year-round. The affixed greenhouse is more than just a fun gardening space, however. The home’s living area benefits substantially from having the insulation provided by the light-filled space, which helps keep it warm during frigid Swedish winters. It also reduces energy usage and costs throughout the year. + Eklund Stockholm New York Via Dwell Images via Eklund Stockholm New York

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Gorgeous solar-powered greenhouse home in Sweden hits the market

Pavegen unveils world’s first energy-harvesting smart street in London

June 30, 2017 by  
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An underutilized street in London’s West End has been transformed into a colorful outdoor space exhibiting sustainable technologies , and right down the center runs Pavegen’s energy-generating pavement . The company, which has been around since 2009, has seen their pavement that harvests power from footsteps installed in 150 projects, but now their product is part of what they describe as the world’s first smart street. Walkers traversing the pavement can connect to an app and see how their footsteps in Bird Street have generated electricity . Pavegen installed a 107-square-foot array in Bird Street to harness and convert the power of footsteps into electricity, which will supply energy for lights and bird sounds in the area. Bluetooth Low-Energy transmitters are also part of this array, so that users can interact with the array via apps. People can see their steps on the energy-harvesting pavement translate into discounts, vouchers, and clean electricity. Related: Pavegen’s kinetic walkway in South African mall will power rural villages Pavegen CEO Laurence Kemball-Cook said in a statement, “With installations in Washington, D.C. and at vital transport hubs including Heathrow, being able to demonstrate how our technology can bring to life the retail shopping experience is a vital step for us. As retailers compete with online, technologies like ours make being in the busy high street more exciting and rewarding for people and brands alike.” Other sustainable technologies on Bird Street include Airlabs’ CleanAir bench, which sucks nitrogen dioxide from the air to create a clean air bubble. Airlite air-purifying paint was also used in Bird Street. Pop-up shops offering shopping or dining beckon visitors. The outdoor space is meant to offer a vision for healthier urban areas. Transport for London Director of City Planning Alex Williams said the innovative Bird Street concepts could be brought to other areas of London, bringing 21st century thinking to improve urban streets. + Pavegen Images courtesy of Pavegen

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Pavegen unveils world’s first energy-harvesting smart street in London

My clean-energy green dream

June 26, 2017 by  
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What would you do if you had the power to do anything you want to fight climate change?

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My clean-energy green dream

Bio-inspired wind turbines with flexible blades 35% more efficient

June 8, 2017 by  
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Wind energy already yields four percent of Earth’s power, but five researchers at French institutions recently drew inspiration from nature to make wind turbines even better. Inspired by creatures like dragonflies, they found flexible blades on wind turbines make the machines much more efficient. Wind turbines today work best under optimal wind speeds, but the new bio-inspired design could offer a way around that fact, making wind power even more accessible. Wind speeds impact the functioning of a wind turbine. If the wind is too slow, the turbine won’t turn and generate energy; if the wind is too fast it could damage the turbine. Wind also must hit the turbines at the correct pitch angle to apply the correct amount of torque to the generator, according to Science. The new research from scientists at Sorbonne University and École Nationale Supérieure des Arts et Métiers-ParisTech fixes these issues with flexible blades much like insect wings. Related: Revolutionary flapping wind turbine mimics hummingbirds to produce clean energy The researchers constructed prototypes with regular hard turbine blades, slightly flexible turbine blades, and very flexible turbine blades. The last design turned out to be too floppy, but the slightly flexible blades outperformed the rigid ones, offering as much as 35 percent more power . They also continued to work in lower wind conditions and weren’t as susceptible to damage in high winds. The journal Proceedings of the Royal Society A published the research online in February. But the scientists’ work isn’t yet done: they now need to search for the right material that’s “flexible, but not too flexible,” according to lead author Vincent Cognet, to scale up the findings. Engineer Asfaw Beyene of San Diego State University, who was not part of this study, told Science, “The fluid mechanics and the physics make absolute sense. There’s no reason why we cannot make morphing blades that will adapt to wind conditions.” Via Science and Tech Xplore Images via Joi Ito on Flickr and Pexels

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Bio-inspired wind turbines with flexible blades 35% more efficient

Desert Twins produce water through condensation in driest place on Earth

May 29, 2017 by  
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One in 10 people on Earth lack access to safe water , which is why artist Ap Verheggen has been working so hard to address water scarcity over the last decade or so. He and the rest of the SunGlacier team, invited by the Dutch Ministry of Defense, recently tested their idea of making water from thin air in what they describe as the driest, hottest place on the planet: the Sahara Desert . They were able to accomplish the feat solely with the power of the sun and a bit of basic physics. Take a closer look at their groundbreaking Desert Twins , designed specifically for this project, after the jump. From an ice-making leaf in the desert to a solar-powered desert waterfall , SunGlacier has pioneered creative, artistic approaches to the lack of water in Earth’s dry areas. They recently made water from air in Mali with the solar-powered Desert Twins, two devices built for the Sahara Desert test. One device makes water, the other houses an energy unit. Condensation enables the devices to create water. Related: Produce your own water from thin air with SunGlacier’s solar-powered DC03 But it’s much harder to pull water from air in the Sahara than it is in the Netherlands, where SunGlacier is based. According to the team, air in Mali on a summer day only has around half the water vapor of a dry summer day in the Netherlands. They faced several days of challenges as they tinkered with their devices, adding insulation and re-configuring cooling air streams before they finally succeeded in producing any water. The team knew their design could operate in ideal conditions, but the Mali success shows it can work just about anywhere in the world. SunGlacier says their device is “probably the world’s first artificial water well to work entirely off the grid .” SunGlacier intends to keep improving their technology, and say in the future they plan to focus on cleaning and enriching water with salts and minerals, and water storage. Their goal is to build a machine that is able to operate without electricity or a liquid water source, much like a well. + SunGlacier Via SunGlacier Images courtesy of SunGlacier

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Desert Twins produce water through condensation in driest place on Earth

Bio-friendly energy storage device draws electrical power from the human body

May 23, 2017 by  
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Humans are constantly on the go, so doesn’t it make sense to harness some of that kinetic energy ? Scientists from UCLA and the University of Connecticut asked themselves that question, which eventually led to them developing an energy-storing device that can draw electrical power from the human body. The biological supercapacitor is a protein-based battery-like device capable of extracting energy from the human body. A supercapacitor is a term used to describe a high-performance electrochemical capacitor (ECs), which is similar to batteries but has a much higher power density. Supercapacitors have faster char-discharge rates, lower internal resistance, higher power density and better cycling ability than batteries. Once energy is obtained by the newly-developed energy storage device, it is then released inside an electrical circuit which looks similar to an implantable medical device. According to the paper Ultrathin Graphene – Protein Supercapacitors for Miniaturized Bioelectronics , which was published earlier this month, the supercapacitor utilizes a “harvester” that operates by using the body’s heat and movements to capture electrical charges from ions, which are found in human body fluids including blood and urine. Bleeping Computer reports , “As electrodes, the harvester uses a carbon nanomaterial called graphene, layered with modified human proteins. The electrodes collect energy from the human body , relay it to the harvester, which then stores it for later use.” Graphene sheets can be drawn as thin as a few atoms, which means the incredibly thin supercapacitors could potentially serve as alternatives to batteries. Related: Researchers close in on world’s first 100% self-charging lithium-ion battery Most importantly, the supercapacitors are bio-friendly , as they are made with natural materials. Graphene is composed of carbon, whereas current implantable medical devices are powered by classic batteries that contain toxic materials. Because the new device is thinner than a human hair, it is more flexible than traditional batteries, as well. This technology could have far-reaching implications for the medical industry. Researchers believe that an implantable medical device using a supercapacitor could last a lifetime. In result, patients wouldn’t need to go through operations at regular intervals to replace batteries – one of the main complications with implantable medical devices. In addition to being used with pacemakers, the new energy device could be paired with devices that stimulate other organs, such as the brain, stomach and/or bladder. + UCLA Via Bleeping Computer Images via Islam Mosa/University of Connecticut and Maher El-Kady/UCLA , Pixabay

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Bio-friendly energy storage device draws electrical power from the human body

Britain installs worlds biggest wind turbines near Liverpool

May 18, 2017 by  
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It’s official: Britain is now the world’s leader in wind turbine technology. Yesterday, Danish company Dong Energy finished installing 32 of the world’s biggest turbines in Liverpool Bay as part of the Burbo Bank extension. Standing 195-meters in length with blades longer than nine London buses, the turbines are now live and generating clean energy . Each of the new turbines stands taller than the Gherkin skyscraper and has more than twice the power capacity of those in a neighboring wind farm which was completed a decade ago, according to the Guardian. Said Benjamin Sykes, the country manager for Dong Energy UK, “That shows you something about the scale-up of the industry, the scale-up of the technology.” Sykes hailed the installation as a “very important milestones” for the renewable energy sector. The Guardian notes this is the first time 8MW turbines have been commercially used anywhere in the world. As a result, the UK can now boast that it has installed more offshore wind power than any other country. Subsidies, agreeable regulations, and a maritime past have made this monumental achievement possible. Related: Siemens Creates the World’s Largest Turbine Blades for New UK Wind Farm! Now, the UK has a capacity of 5.3GW, which means enough electricity can be generated to power 4.3 million homes. And, the sovereign state has no intention of slowing down. Eight more projects are already under construction, and they are expected to add more than half the capacity again. In Germany, Sykes recently received approval to build the world’s first subsidy-free offshore wind farm . By the time that project begins construction, he believes turbines as powerful as 13MW or 15MW will be on the market. “There’s every reason to think they will arrive,” said Sykes. Improved technology will also ensure those in the clean energy sector continue to receive taxpayer support in the UK, as ministers have made it clear cuts need to be made in the industry. “This and other projects have been crucial for driving costs down for the whole industry,” said Skyes, referring to the Burbo Bank extension. + Dong Energy Via The Guardian Images via Pixabay , Dong Energy

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Britain installs worlds biggest wind turbines near Liverpool

Indiana governor delivers blow to solar industry

May 4, 2017 by  
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The solar industry provides three times as many jobs in the state of Indiana as natural gas, but governor Eric Holcomb doesn’t seem to care. Despite Department of Energy statistics that show the industry’s potential benefits to his constituents, Holcomb just signed a bill reducing incentives for solar power , impacting both installers and customers. Holcomb signed Senate Bill 309 this week. It’s better than a previous variant, which would have treated homeowners as power plants and consumers simultaneously, requiring them to sell all of the power generated on their own rooftops at the wholesale rate, around four cents per kilowatt-hour (kwh), and then buy it back at the retail rate of about 11 cents per kwh. That version didn’t go through; but the new bill hits net metering , or the opportunity for homeowners to sell excess energy at the retail rate in Indiana. Now they can only sell it at just above the wholesale rate. Related: Solar power now provides twice as many jobs as coal in U.S. That’s not all. Utilities can now charge those homeowners with rooftop solar an extra fee for “energy delivery costs.” Some people think the bill’s ambiguous language also ends net metering entirely for people obtaining power from community solar, or those leasing their panels. People who get rooftop solar installed after 2022 won’t be able to benefit from net metering at all; neither will those people who replace or expand the system they have now after 2017. The public were against the bill, according to Hoosier Environmental Council executive director Jesse Kharbanda who said, “Ask Republicans , ‘What kind of feedback are you getting from your constituents?’ They’ll tell us that they have gotten dozens and dozens of calls opposing the bill, but zero supporting the bill.” Solar installer Paul Steury of Indiana-based Photon Electric said the law could hurt sales since it’s stripped away incentives. He said he knows many representatives who didn’t listen to the people. Indiana rooftop solar owner Lanette Erby told Nexus Media, “We’re currently on an inverter with the electric company, but obviously if the net metering bill were to go through, we’d be purchasing battery backups. That’s where we’re at. The same kind of legislation killed the solar industry in a couple of other states…which is terrible because it’s creating so many jobs.” Via Nexus Media Images via Rectify Solar Facebook

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Indiana governor delivers blow to solar industry

Energy-generating ‘artificial plants’ turn greenhouse gases into clean air

April 27, 2017 by  
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Groundbreaking research from scientists at the University of Central Florida (UCF) and Florida State University could help in the fight against climate change . The researchers were able to trigger photosynthesis in metal-organic frameworks (MOF) with a little help from blue light , and the process turned carbon dioxide (CO2) into solar fuel . UCF assistant professor Fernando Uribe-Romo described the find as a breakthrough. Scientists have been seeking such a breakthrough for years. The trick is getting visible light to set off the chemical reaction; ultraviolet rays can do it but only comprise four percent of the light hitting Earth from the sun. Most materials that can absorb visible light to set off the reaction are too expensive or rare. The Florida scientists, however, found they could use the common nontoxic metal titanium added with organic molecules that can be designed to absorb certain colors of light. Uribe-Romo set them up to absorb blue light. Related: MIT Scientists Create Artificial Solar Leaf That Can Power Homes The team tested the MOF inside a photoreactor – or glowing blue cylinder lined with LED lights to mimic blue wavelengths shining from the sun – and the resulting chemical reaction turned CO2 into solar fuel. Uribe-Romo said, “The idea would be to set up stations that capture large amounts of CO2, like next to a power plant . The gas would be sucked into the station, go through the process, and recycle the greenhouse gases while producing energy that would be put back into the power plant.” He said it may even be possible for the material to be put in rooftop shingles to both clean the air and generate energy usable for homeowners. He aims to keep working with the synthetic material and see if different wavelengths of visible light can set off the reaction. The Journal of Materials Chemistry A published the find online earlier this month. Via The Independent and EurekAlert! Images via UCF: Bernard Wilchusky and University of Central Florida

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