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Archive for the ‘solar power’ category: Page 91

Sep 29, 2019

Stunning Image Shows Astronaut’s-Eye View of Rocket Approaching ISS

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

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.

Sep 27, 2019

Solar panels made with ink

Posted by in categories: solar power, sustainability

Forget solar roofs, these solar panels are cheap, paper-thin and made with a revolutionary conductive ink.

Sep 26, 2019

A new non-fullerene acceptor for indoor solar energy applications

Posted by in categories: solar power, sustainability

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.

Sep 25, 2019

Future Tech: Spinning a Space Station

Posted by in categories: 3D printing, engineering, robotics/AI, solar power, space, sustainability

The ultimate way of building up space structures would be to use material sourced there, rather than launched from Earth. Once processed into finished composite material, the resin holds the carbon fibres together as a solid rather than a fabric. The beams can be used to construct more complex structures, antennae, or space station trusses. Image credit: All About Space/Adrian Mann.

The International Space Station is the largest structure in space so far. It has been painstakingly assembled from 32 launches over 19 years, and still only supports six crew in a little-under-a-thousand cubic metres of pressurised space. It’s a long way from the giant rotating space stations some expected by 2001. The problem is that the rigid aluminium modules all have to be launched individually, and assembled in space. Bigelow Aerospace will significantly improve on this with their inflatable modules that can be launched as a compressed bundle; but a British company has developed a system that could transform space flight, by building structures directly in space.

Magna Parva from Leicester are a space engineering consultancy, founded in 2005 by Andy Bowyer and Miles Ashcroft. Their team have worked on a range of space hardware, from methods to keep Martian solar panels clear of dust, to ultrasonic propellant sensors, to spacecraft windows. But their latest project is capable of 3D printing complete structures in space, using a process called pultrusion. Raw carbon fibres and epoxy resin are combined in a robotic tool to create carbon composite beams of unlimited length – like a spider creating a web much larger than itself. Building structures in space has a range of compounding virtues, it is more compact than even inflatables, as only bulk fibre and resin need to be launched. Any assembled hardware that has to go through a rocket launch has to be made much stronger than needed in space to survive the launch, printed structures can be designed solely for their in space application, using less material still.

Sep 25, 2019

New standard of reference for assessing solar forecast proposed

Posted by in categories: solar power, sustainability

Being able to accurately forecast how much solar energy reaches the surface of the Earth is key to guiding decisions for running solar power plants.

While day-ahead forecasts have become more accurate in recent years, the solar community lacks a unified verification procedure, and assessing how one compares to another is difficult. New work in the Journal of Renewable and Sustainable Energy looks to provide a standard of reference to the field.

Researcher Dazhi Yang proposed an improved way to assess day-ahead solar forecasting. The proposed method combines two popular reference methods for weather forecasting, namely persistence and climatology. Using a weighted linear combination of both methods, his approach provides a new way to gauge the skill of a forecaster.

Sep 22, 2019

Solar and Wind Power So Cheap They’re Outgrowing Subsidies

Posted by in categories: government, solar power, sustainability

(Bloomberg) — For years, wind and solar power were derided as boondoggles. They were too expensive, the argument went, to build without government handouts.

Today, renewable energy is so cheap that the handouts they once needed are disappearing.

On sun-drenched fields across Spain and Italy, developers are building solar farms without subsidies or tax-breaks, betting they can profit without them. In China, the government plans to stop financially supporting new wind farms. And in the U.S., developers are signing shorter sales contracts, opting to depend on competitive markets for revenue once the agreements expire.

Sep 15, 2019

A Solar-Powered Hyperloop Train Could Soon Be a Reality

Posted by in categories: solar power, sustainability, transportation

Click here to read the full article.

The Hyperloop may still be a decade from becoming a reality, but already people are trying to improve upon the concept. Chinese architecture firm MAD is developing an eco-friendly version of the futuristic transportation system, one that would utilize solar and wind energies to operate.

Earlier this week, MAD announced that it was working with US-based Hyperloop Transportation Technologies on a new sustainable design with the aim of creating “enhanced connectivity between cities and people,” according to CNN. The proposed Hyperloop draws its power from a system of solar panels and wind turbine forests.

Sep 13, 2019

Toyota Wants to Slather Solar Panels All Over Its Prius Hybrid

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

Since July, Toyota has been working on a brand-new design. It features special, much higher efficiency solar panels that are mounted on the hood, roof and even hatchback of the car, charging the car’s batteries even when it’s moving.

Panel Van

The new solar system could allow the Prius to cover 50 kilometers, four days a week, on solar alone, Bloomberg reports.

Sep 13, 2019

Toyota Is Trying to Figure Out How to Make a Car Run Forever

Posted by in categories: solar power, sustainability, transportation

Put together the best solar panels money can buy, super-efficient batteries and decades of car-making know-how and, theoretically, a vehicle might run forever.

That’s the audacious motivation behind a project by Toyota Motor Corp., Sharp Corp. and New Energy and Industrial Technology Development Organization of Japan, or NEDO, to test a Prius that could revolutionize transportation.

Sep 10, 2019

Future of portable electronics: Novel organic semiconductor with exciting properties

Posted by in categories: computing, solar power, sustainability

Semiconductors are substances that have a conductivity between that of conductors and insulators. Due to their unique properties of conducting current only in specific conditions, they can be controlled or modified to suit our needs. Nowhere is the application of semiconductors more extensive or important than in electrical and electronic devices, such as diodes, transistors, solar cells, and integrated circuits.

Semiconductors can be made of either organic (carbon-based) or inorganic materials. Recent trends in research show that scientists are opting to develop more organic semiconductors, as they have some clear advantages over inorganic semiconductors. Now, scientists, led by Prof Makoto Tadokoro of the Tokyo University of Science, report on the synthesis of a novel organic substance with potential applications as an n-type semiconductor. This study is published in the journal Organic and Biomolecular Chemistry. According to Prof Makoto Tadokoro, “organic semiconductor devices, unlike hard inorganic semiconductor devices, are very soft and are useful for creating adhesive portable devices that can easily fit on a person.” However, despite the advantages of organic semiconductors, there are very few known stable molecules that bear the physical properties of n-type semiconductors, compared to inorganic n-type semiconductors.

N-heteroheptacenequinone is a well-known potential candidate for materials. However, it has some drawbacks: it is unstable in air and UV-visible light, and it is insoluble in organic solvents. These disadvantages obstruct the practical applications of this substance as a semiconductor.

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