A mysterious startup reveals a groundbreaking solar energy achievement.
Category: solar power – Page 87
Netherlands-based technology companies Avy and Wattlab have conducted the first test flight of a drone prototype that is planned to be used in medical projects in Africa.
Wattlab, a Dutch clean-tech start-up founded by Sweden-based power utility Vattenfall and Delft University of Technology, and Netherlands-based drone manufacturer Avy have announced that a drone equipped with special solar foils produced by Wattlab has successfully performed its first test flight.
“The solar-powered prototype is designed to be used for urgent medical transportation, emergency services, and nature conservation,” the two companies stated, adding that the solar films were installed on the wings while maintaining aerodynamics and without increasing significantly the weight. “The solar technology developed in this project is fully integrated into the wing shape and adds no extra weight,” explained Bo Salet, founder of Wattlab.
In the future, the two tech companies are planning to reduce the wings’ weight, increase their surface, and deploy more solar films. “Solar cells with a higher efficiency will be tested in the coming month,” they further explained.
“We’re not moving heat from the surface to the atmosphere. We’re just dumping it all out into the universe, which is an infinite heat sink,” said Xiangyu Li, a postdoctoral researcher at the Massachusetts Institute of Technology who worked on this project as a Ph.D. student in Ruan’s lab.
WEST LAFAYETTE, Ind. — What if paint could cool off a building enough to not need air conditioning?
Purdue University engineers have created white paint that can keep surfaces up to 18 degrees Fahrenheit cooler than their ambient surroundings – almost like a refrigerator does, but without consuming energy.
It looks like Australia with be exporting solar power to other countries with less space.
A major renewable energy project in Australia billed as the world’s largest solar farm in development has had its proposed location revealed.
The AUD$20 billion facility – the heart of an ambitious electricity network called the Australia–ASEAN Power Link – will be built at a remote cattle station in the Northern Territory, roughly halfway between Darwin and Alice Springs.
The gargantuan 10-gigawatt array – spread out across some 20,000 football fields’ worth of photovoltaic panels – might be situated close to the heart of the Australian outback, but the energy reaped from the plant will ultimately be transported far, far away from the sunburnt country.
Windows are great for letting in light, but in summer months that comes with an unwanted side order of heat, causing many people to run the air conditioning non-stop. Now, researchers have developed windows that can change color automatically when heated by sunlight, to keep buildings cool – and to top it off, they’re solar panels as well.
Color-changing glass has been around for a long time, most commonly as transition lenses for eyeglasses that tint automatically under bright light. More recent developments have made it electronic and switchable on demand, and scaled it up to window size. At the same time, transparent (or semi-transparent) solar cells are getting more efficient, to the point where they can be fitted into windows.
In the new study, researchers at the US Department of Energy’s National Renewable Energy Laboratory (NREL) has combined the two technologies into one window. The “thermochromic photovoltaic” tech, as they call it, can switch colors when heated up by sunlight to block glare and reduce the need for cooling, and when it does it also starts harvesting energy from that light.
A simple way to improve efficiency…
Solar panels offer huge potential to move more people away from electricity generated from burning coal, and a new innovation devised by scientists stands to more than double the amount of light captured by conventional solar cells.
In a new study, a team of scientists from the UK, Portugal, and Brazil discovered that etching a shallow pattern of grating lines in a checkerboard design on solar cells can enhance the current generated by crystalline silicon (c-Si) by as much as 125 percent.
“We found a simple trick for boosting the absorption of slim solar cells,” explains photovoltaics researcher Christian Schuster from the University of York.
All of Earth’s civilization could be powered purely on solar energy, says Elon Musk on Twitter. Discover the reason behind his love for solar energy.
Solar panel recycling.
America’s largest solar panel maker is also the world’s largest recycler of panels, with their program recovering 95% of materials for reuse.
Normally an insulator, diamond becomes a metallic conductor when subjected to large strain in a new theoretical model.
Long known as the hardest of all natural materials, diamonds are also exceptional thermal conductors and electrical insulators. Now, researchers have discovered a way to tweak tiny needles of diamond in a controlled way to transform their electronic properties, dialing them from insulating, through semiconducting, all the way to highly conductive, or metallic. This can be induced dynamically and reversed at will, with no degradation of the diamond material.
The research, though still at an early proof-of-concept stage, may open up a wide array of potential applications, including new kinds of broadband solar cells, highly efficient LEDs and power electronics, and new optical devices or quantum sensors, the researchers say.