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Archive for the ‘solar power’ category: Page 2

Aug 19, 2021

China to harvest sun’s energy in space and beam it to Earth for power by 2030

Posted by in categories: military, solar power, space, sustainability

Over the last few decades, various forms of solar power stations have been proposed from around the world but they remained theoretical because of major technical challenges.

At Bishan, Chinese researchers would first need to prove that wireless power transfer worked over a long distance.


Civilian and military researchers will look at applications for the technology amid concerns about radiation and the potential for beams misfired from space.

Continue reading “China to harvest sun’s energy in space and beam it to Earth for power by 2030” »

Aug 18, 2021

The Most Expensive Listing in Southern Nevada Asks $32.5 Million

Posted by in categories: solar power, sustainability, transportation

The 14,207-square-foot home in Henderson features views of the Las Vegas Strip, smart-home technology, solar power and a 12-car garage.

Aug 12, 2021

Recovering waste heat from solar cells via a thermoelectric generator

Posted by in categories: solar power, sustainability

Heat flows naturally through the TEG because its cold side is kept at room temperature, while its hot side, which is in thermal contact with the cell, is at a high temperature. The Seebeck effect, which is the direct conversion of temperature differences between two semiconductor materials into electric voltage, generates this difference which then translates into additional electrical power.

The scientists decided not to use a spectrum splitting technology, which is generally utilized in these applications, to direct different parts of the solar spectrum towards either the PV or the TEG unit. “It is more convenient, in terms of final efficiency gains, to keep the solar cell at the same temperature of the TEG hot side, instead of keeping the cell cold but losing much of the recoverable heat,” the academics explained, noting that a wide-gap solar cell based on perovskite was chosen for the device, due to its lower sensitivity to high temperatures. “Temperature-sensitive materials, such as silicon, lose too much efficiency to make the hybridization convenient,” they further explained.

Aug 11, 2021

Crystal arrangement results in 1,000x more power from ferroelectric solar cells

Posted by in categories: solar power, sustainability

German researchers developed a lattice arrangement of three different layers of ferroelectric crystals that created a powerful photovoltaic effect.


Combining ultra-thin layers of different materials can raise the photovoltaic effect of solar cells by a factor of 1,000 according to researchers at Martin Luther University Halle-Wittenberg (MLU) in Germany.

Their findings, published in the journal “Science Advances,” described a lattice arrangement of three different layers of ferroelectric crystals (in this case, of barium titanate, strontium titanate, and calcium titanate) that created a powerful solar energy producing effect.

Continue reading “Crystal arrangement results in 1,000x more power from ferroelectric solar cells” »

Aug 11, 2021

Could We Explore the Entire Galaxy With Self-Replicating Robots?

Posted by in categories: 3D printing, environmental, nuclear energy, physics, robotics/AI, solar power, space, sustainability

Circa 2016


Scientists and engineers since the 1940s have been toying with the idea of building self-replicating machines, or von Neumann machines, named for John von Neumann. With recent advances in 3D printing (including in zero gravity) and machine learning AI, it seems like self-replicating machines are much more feasible today. In the 21st century, a tantalizing possibility for this technology has emerged: sending a space probe out to a different star system, having it mine resources to make a copy of itself, and then launching that one to yet another star system, and on and on and on.

As a wild new episode of PBS’s YouTube series Space Time suggests, if we could send a von Neumann probe to another star system—likely Alpha Centauri, the closest to us at about 4.4 light years away—then that autonomous spaceship could land on a rocky planet, asteroid, or moon and start building a factory. (Of course, it’d probably need a nuclear fusion drive, something we still need to develop.)

Continue reading “Could We Explore the Entire Galaxy With Self-Replicating Robots?” »

Aug 11, 2021

Reaping double benefits with solar farming

Posted by in categories: climatology, solar power, sustainability

Farmers reap double benefits with solar power in fields Solar panels generate electricity in the fields, helping both farmers and climate protection. DW visits a German solar farm — and looks at other places this combination is paying off. How widely can agrovoltaics spread? Fabian Karthaus grew u…

Aug 9, 2021

Vortex Bladeless wind turbines generate electricity from the vibration

Posted by in categories: solar power, sustainability

Wind farms certainly allow for the production of clean energy. Although they are 100% renewable, they still have problems. They have high costs, disfigure the landscape, produce noise pollution, and above all, have a heavy impact on fauna, and in particular on birds.

The Spanish startup Vortex Bladeless has developed a bladeless turbine that can revolutionize wind energy, especially at the household level, and become the alternative to solar panels. The design of the Spanish firm has already received the approval of Norway’s state energy company, Equinor.

Continue reading “Vortex Bladeless wind turbines generate electricity from the vibration” »

Aug 7, 2021

Caltech’s New Space-Based Solar Project Could Power Our Entire Planet /

Posted by in categories: solar power, space, sustainability

It’s the stuff of science fiction: Solar panels in space that beam power directly to Earth equipping the planet with clean renewable and affordable energy. Yet, it could soon be reality.

Caltech has just received $100 million in funding for their Space Solar Power Project (SSPP). The project is described by Caltech as: “Collecting solar power in space and transmitting the energy wirelessly to Earth through microwaves enables terrestrial power availability unaffected by weather or time of day. Solar power could be continuously available anywhere on earth.”

“This ambitious project is a transformative approach to large-scale solar energy harvesting for the Earth that overcomes this intermittency and the need for energy storage,” said SSPP researcher Harry Atwater in the Caltech press release on the matter.

Continue reading “Caltech’s New Space-Based Solar Project Could Power Our Entire Planet /” »

Aug 6, 2021

U.S. Navy is developing a solar-powered plane that can fly for 90 days straight

Posted by in categories: solar power, sustainability, transportation

The aircraft, evocatively called Skydweller and built by a U.S.-Spanish aerospace firm Skydweller Aero, could help the Navy keep a watchful eye on the surrounding seas while escorting ships months at a time or act as a communications relay platform. The company was awarded a $5 million contract by the U.S. Navy to develop the aircraft.


To stay airborne for so long, the pilotless craft would have 2900sq ft of solar cells on its wings.

Aug 6, 2021

Why Not Turn Airports Into Giant Solar Farms?

Posted by in categories: solar power, sustainability, transportation

Airports have vast swaths of empty land and rooftops. But it’s not so easy as just covering everything with solar panels.

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