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Category: sustainability – Page 368

A tool to speed development of new solar cells

A new computational simulator can help predict whether changes to materials or design will improve performance in new photovoltaic cells.

In the ongoing race to develop ever-better materials and configurations for solar cells, there are many variables that can be adjusted to try to improve performance, including material type, thickness, and geometric arrangement. Developing new solar cells has generally been a tedious process of making small changes to one of these parameters at a time. While computational simulators have made it possible to evaluate such changes without having to actually build each new variation for testing, the process remains slow.

Now, researchers at MIT and Google Brain have developed a system that makes it possible not just to evaluate one proposed design at a time, but to provide information about which changes will provide the desired improvements. This could greatly increase the rate for the discovery of new, improved configurations.

The tidal power plant is making waves

We have so many types of green energy available to us, so why the hell do we still rely on fossil fuels when tidal plants like this do the same job without any emissions? Swansea Bay Lagoon has a breakwater approximate lifecycle of at least 120 years, meaning it will last twice as long as a nuclear facility and 5X longer than offshore wind turbines. It’s a no-brainer 🧠 This is how you fight climate change!

📹 Preconstruct via Vimeo / TidalLagoonSwanseaBay / ℹ️ Good News Network.

Nuclear fusion startup test fires plastic waste-powered rocket

A UK company with lofty aspirations around sustainable space travel has test-fired a rocket engine powered in part by plastic waste. Pulsar Fusion’s hybrid rocket engine is part of an ambitious journey that also involves the development of nuclear fusion technology for high-speed propulsion, which could cut travel times to Mars in half.

The idea of incorporating recycled plastic waste into hybrid rocket fuels is something we have seen explored before. Virgin Galactic flirted with the idea back in 2014 through the use of a rocket powered by a fuel based on a class of thermoset plastics, though this was swiftly abandoned after a failed test flight. Scottish company Skyrora is another outfit working on such a technology, having successfully tested out its Ecosene fuel made from converted plastic waste.

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Autonomous robot for concentrated solar power installation and maintenance

Heliogen announced the roll-out of its robots to install and clean its CSP plants.

Heliogen, a California-based developer of concentrated solar power (CSP) plants, held the first technical demonstration of its ICARUS, or Installation & Cleaning Autonomous Robot & Utility Solution.

ICARUS is a system of autonomous robots designed to clean the heliostats, which are the reflective mirrors of the CSP system. Heliostats reflect sunlight into a collection tower, where the light and heat is converted to electricity and usable thermal energy. Recently, the company partnered with Bloom Energy to produce hydrogen fuel.

Researchers Show a 100% Renewable US Grid with No Blackouts Is Possible

And it would create 4.7 million long-term jobs.

The United States’ energy system that’s running completely on wind, water, and solar, combined with storage, would not only avoid blackouts but also lower energy requirements and consumer costs, a Stanford University study has shown. In addition, this would create millions of jobs, improve health, and free up land for various other purposes.

This is incredibly important because, for some people, a future powered by renewable energy isn’t feasible due to concerns about blackouts driven by inconsistent electricity sources. Take, for example, the grid blackouts caused by extreme weather events in California in August 2020 and Texas in February 2021.

However, the study, which examined grid stability under various scenarios in which wind, water, and solar energy supplied 100 percent of all energy needs in the U.S., has now demonstrated that those concerns are misplaced.

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A ‘World First’ Solar RV Awning Enables More Affordable Off-Grid Living

The auto-retracting system can be deployed when solar energy is needed.

California-based energy firm Xponent Power developed an auto-retracting Xpanse Solar Awning that can be deployed if and when solar energy is needed, a report from New Atlas reveals.

The retractable solar panels move out to the side of the RV, creating a nice bit of shade for travelers, at the same time as providing on-demand solar energy. Depending on the model, owners will get 800, 1,000, or 1,200 watts of charging power.

The off-grid solution was designed to allow RV owners to camp away from electrical sockets for days at a time, and it can be easily mounted to either side of the vehicle. The Xpanse awning is made up of a 16 × 7-foot (4.9 × 2.1-m) “fabric” of high-efficiency glass-based solar panels. The awning features “bi-facial” solar panels, meaning it captures the energy of the sun from above as well as from below — the underside can capture a surprising amount of energy from reflection off the ground and the RV itself.

The Xpanse awning is deployed at the push of a button, and it has an auto-retraction feature that will automatically pull it back in during stormy and windy conditions to avoid damage. On top of this, Xponent says that the panels feature small air gaps that make them more stable in moderate wind conditions.

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