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Category: solar power – Page 101

BERLIN, August 21, 2019 (Newswire.com) — The Neutrino Energy Group cooperates with a worldwide team of scientists and various international research centers, which deal with application research, the conversion of invisible radiation spectra of the sun, among other things the neutrinos (high-energy particles, which ceaselessly reach the earth) in electric power.

Is renewable energy hurting consumers?

During the last decade or so, consumers around the world have been encouraged to install solar panels on top of their houses. In certain climates, these rooftop photovoltaic installations can more than cover the electrical needs of an individual home, and many solar-equipped houses feature photovoltaic systems that wire directly into the grid. At times when the home has excess solar-generated electricity left over, this energy feeds back into the grid and helps out with the electricity needs of other energy company customers.

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In a recent paper (Generating Light from Darkness), published on Joule, Stanford University researchers Aaswath P. Raman, Wei Li, and Shanhui Fan are reporting the successful creation of a device that is able to generate electricity by exploiting the difference of temperature that can be established during the night between the surrounding air and the surface of the device that is cooling itself by emitting infrared radiations towards the night sky.

In a recent paper, published on Joule, Stanford University researchers are reporting the successful creation of a device that is able to generate electricity by exploiting the difference of temperature that can be established during the night between the surrounding air and the surface of the device that is cooling itself by emitting infrared radiations towards the night sky.

The possibility to generate electricity by exploiting thermal difference is not new, what is new here is the idea of creating a temperature difference by having part of the device radiating energy into the outer space.

As shown in the graphic, the device contains a thermoelectric generator, one side exposed to the air temperature and the other in contact with an aluminum plate. This plate, like a solar panel, actually an anti-solar panel, is facing the night sky and radiates thermal energy towards the sky. This lowers the temperature of the plate, some 2 centigrades less than the lower part of the device that has the same temperature of the air. How is it possible the aluminum plate has not the same temperature of the air? Good question! Here is the trick. The aluminum plate is isolated from the ambient temperature with a transparent insulating panel that lets the radiating energy go through but blocks the heat exchange.

Continue reading “Ever heard of an anti-solar panel? Here it is” | >

Research led by University of Texas at Dallas physicists has altered the understanding of the fundamental properties of perovskite crystals, a class of materials with great potential as solar cells and light emitters.

Published in July in Nature Communications, the study presents evidence that questions existing models of the behavior of perovskites on the .

“Our enhanced understanding of the physics of perovskites will help determine how they are best used,” said Dr. Anton Malko, associate professor of physics in the School of Natural Sciences and Mathematics and a corresponding author of the paper.

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Lunar lander developer Intuitive Machines has signed a contract with SpaceX for its first mission to the moon. The company announced this week that a Falcon 9 will launch its Nova-C lander in 2021 as part of a rideshare mission, but terms of the deal were not disclosed. The company won a contract from NASA in May to carry five payloads to the moon on that mission as part of the agency’s Commercial Lunar Payload Services program. Separately, a federal appeals court this week upheld a verdict in favor of the company in a suit against Moon Express, another commercial lunar lander company. That suit, involving work disputes between the companies, led to Intuitive Machines receiving $4.1 million in cash and stock. [SpaceNews]

Maxar Technologies awarded a contract to Deployable Space Systems to manufacture flexible solar arrays for the first element of NASA’s lunar Gateway. The contract this week is for a pair of Roll Out Solar Array solar panels, each capable of producing 32.5 kilowatts of power. The arrays will be used on the Power and Propulsion Element that Maxar is building for NASA that will serve as the foundation for the Gateway in orbit around the moon. [SpaceNews]

A startup planning propellant depots in orbit for refueling satellites has raised $3 million. OrbitFab announced Thursday it raised the seed round of funding from venture capital fund Type 1 Ventures, Techstars and others. The company is working on technology to allow for refueling of satellites using small depots in orbit, and recently tested that technology on the International Space Station. At a conference in Washington earlier in the week, the company said it was still working on raising a funding round but hopes to have its first tanker in orbit by the end of next year. [TechCrunch].

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You probably hear a lot of news from NASA’s many amazing Mars missions: the Curiosity rover, InSight, MRO, and more. NASA is good at promoting their stuff of course, but also the images returned from all these missions are truly wonderful.

You may not hear as much from the European Space Agency’s Mars Express mission. Well, you may have heard about the lander Beagle 2: It set down safely on the surface, but two of the four solar panels didn’t deploy, dooming that part of that mission.

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Hanwha Q Cells officially opened its 300,000 square foot solar panel factory in Dalton, Georgia last week, claiming it is the largest such manufacturing facility in the western hemisphere. The $200 million factory employs more than 650 workers and is capable of producing 12,000 solar panels a year — enough to generate 1.7 GW of electricity. Its standard production panel features six bus bars, has an efficiency of about 19%, and an output of up to 345 watts.

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A robotic Japanese cargo ship successfully arrived at the International Space Station Saturday (Sept. 28) carrying more than 4 tons of supplies, including new batteries for the outpost’s solar power grid.

The Japan Aerospace Exploration Agency’s (JAXA) HTV-8 cargo ship pulled up to the space station at 7:12 a.m. EDT (1112 GMT), where it was captured by a robotic arm wielded by NASA astronaut Christina Koch inside the orbiting lab. The station and HTV-8, also known as Kounotori 8 (Kounotori means “white stork” in Japanese), were soaring 262 miles (422 kilometers) over Angola in southern Africa at the time.

“What you all have done is a testament to what we can accomplish when international teams work together towards a common goal,” Koch radioed to NASA’s Mission Control in Houston and flight controllers at JAXA’s Tsukuba Space Center in Japan. “We’re honored to have Kounotori on board, and look forward to a successful and productive mission together.”

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This week a new group of astronauts launched from the Baikonur Cosmodrome in Kazakhstan headed for the International Space Station. The three new ISS crew members, Jessica Meir of NASA, Oleg Skripochka of Roscosmos, and Hazza Ali Almansoori of the Emirati Space Agency docked with the station several hours later, temporarily taking the population of the station to nine people. That marks the largest crew aboard the ISS since 2015, but members of previous Expedition team 60 will be returning to Earth in around a week.

While the transferring of astronauts to and from the ISS is fairly standard for space agencies these days, there was something special about this mission. Astronaut Christina Koch was looking forward to being joined by her best friend and fellow NASA astronaut Jessica Meir, so she decided to capture an image of the incoming craft from her perspective on board the ISS. The result is the stunning photo above, showing the ghostly trails from the first stage and the cloud of vapor around the craft.

The astronauts traveled aboard a Soyuz MS-15 spacecraft, docking at the station’s Zvezda service module six hours after launch. The crew will stay aboard the ISS for at least six months and will be working on scientific projects in varied fields including biology, physical sciences, and the development of new technologies. They will also perform upgrades to the stations including installing new lithium-ion batteries which collect power from the station’s solar panels, part of an ongoing project to update the ISS’s power system.

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Organic photovoltaic (OPV) cells, a third-generation solar cell technology that can convert solar energy into electricity, have been found to be more efficient than silicon cells under low light intensity indoor LED illumination. These cells have also shown great potential for powering low consumption, off-the grid electronics in indoor environments.

Despite their huge potential, the of OPV is currently limited by substantial losses in their open-circuit voltage. In addition, past studies suggest that when used for indoor illumination their is far from optimal.

In a quest to overcome these limitations, a team of researchers at the Chinese Academy of Sciences in China and Linköping University in Sweden have recently designed a non-fullerene acceptor for that could enable high-performance organic photovoltaic cells for indoor applications. This new acceptor, presented in a paper published in Nature Energy, can be blended with a polymer donor to obtain a photoactive layer with an absorption spectrum that matches that of indoor light sources.

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