Archive for the ‘energy’ category: Page 150

Nov 13, 2021

Space startup wants to sling satellites into orbit with a huge centrifuge

Posted by in categories: energy, satellites

In a nutshell: In the 21st century, there’s a new space race, primarily between Tesla (SpaceX) and Amazon (Blue Origin). Both are concentrating on traditional methods of launching satellites into space—namely, big rockets. However, a small space startup called SpinLaunch is developing a cheaper and environmentally cleaner way of launching satellites.

SpinLaunch is using a gigantic centrifuge to shoot stuff into space. By “stuff,” we mean things that can withstand the G-force created by being spun at 5,000 miles per hour (over 10,000 Gs), which is a category of stuff that does not yet include satellites. However, it did launch a missile-like projectile tens of thousands of feet into the air last month, using only 20 percent of the accelerator’s power.

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Nov 12, 2021

Newly developed compound may enable sustainable, cost-effective, large-scale energy storage

Posted by in categories: chemistry, energy, engineering, sustainability

To produce a cost-effective redox flow battery, researchers based at the South China University of Technology have synthesized a molecular compound that serves as a low-cost electrolyte, enabling a stable flow battery that retains 99.98% capacity per cycle. They published their approach on August 14 in the Energy Material Advances.

Comprising two tanks of opposing liquid electrolytes, the battery pumps the positive and negative liquids along a membrane separator sandwiched between electrodes, facilitating ion exchanges to produce energy. Significant work has been dedicated to developing the negative electrolyte liquid, while the positive electrolyte liquid has received less attention, according to corresponding author Zhenxing Liang, professor in the Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology.

“Aqueous redox flow batteries can realize the stable electrical output for using unsteady solar and wind energy, and they have been recognized as a promising large-scale energy storage ,” Liang said. “Electroactive organic merit of element abundance, low cost and flexible molecular control over the electrochemical features for both positive and negative electrolytes are regarded as key to developing next-generation redox flow batteries.”

Nov 12, 2021

Battery-Powered Chainsaws Are Proving to Be a Better Choice Than Those Powered by Gas Engines

Posted by in category: energy

The revolution will be electrified.

For decades, gas-engine power equipment was the only choice for yardwork, followed by corded power tools at a distant second. Anything powered by a battery was either ineffective or an expensive novelty. The few successful versions of battery-powered outdoor equipment were limited to low-power applications, like grass shears. Of course, for every rule there’s an exception: We reported on the highly effective GE Elec-Trak battery-powered tractor and Black & Decker’s somewhat effective battery mowers in our April 1970 issue.

In many respects, gas-engine equipment still rules the outdoors in terms of power and cost effectiveness–at least for people with serious work to do. But a revolution in outdoor power is occurring. For many people doing yardwork, cordless power tools are now the default choice. This has stood the status quo on its head.

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Nov 12, 2021

The new SUPER WEAPONS with which CHINA hopes to BEAT USA (At least in Asia) — VisualPolitik EN

Posted by in categories: energy, military

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Asia-Pacific has become the most important region in the world. A region in which the United States and China are fighting a battle for political and military dominance. As we told you in a past video, the distance separating these two powers is still worlds apart, yet China is committed to becoming a regional mega-power.

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Nov 11, 2021

Using ocean plastic waste to power ocean cleanup ships

Posted by in categories: energy, materials

A team of researchers from Worcester Polytechnic Institute, Woods Hole Oceanographic Institution and Harvard University believes that the plastic amassing in floating islands in the oceans could be used to power the ships that are sent to clean them up. In their paper published in Proceedings of the National Academy of Sciences, the group describes how ocean plastics could be converted to ship fuel.

Prior research has shown that millions of tons of plastics enter the each year—some of it is ground into fragments and disperses, and some of it winds up in colossal garbage patches floating in remote parts of the ocean. Because of the danger that such plastics present to ocean life, some environmentalists have begun cleanup operations. Such operations typically involve sending a ship to a garbage patch, collecting as much as the ship will hold and then bringing it back to port for processing. In this new effort, the researchers suggest it would be far more efficient and greener to turn the into fuel for both a processing machine and for uninterrupted operation of the ships.

The researchers note that the plastic in a could be converted to a type of oil via hydrothermal liquefaction (HTL). In this process, the plastic is heated to 300–550 degrees Celsius at pressures 250 to 300 times that of sea-level conditions. The researchers have calculated that a ship carrying an HTL converter would be capable of producing enough oil to run the HTL converter and the ship’s engine. Under their scenario, plastic collection booms would be permanently stationed at multiple sites around a large patch, able to load the plastic it collects onto ships.

Nov 11, 2021

Clean energy could supply 100% of U.S. electricity by 2035

Posted by in categories: energy, sustainability, transportation

A new report, published this week, highlights the explosive growth in solar, wind, electric vehicles, and other clean tech in the United States.

Nov 11, 2021

Electric vehicle revolution puts pressure on energy grid

Posted by in categories: energy, government, sustainability, transportation

Solar car is better option.

The influx of electric vehicles into Australia could put an additional load of 20 gigawatts a day — or a doubling of peak electricity demand — on the electricity grid by 2030 if most owners charged up at the same time every night, a new report has found.

The $350 million research collaboration between industry, universities and government has identified a raft of challenges for the arrival of EVs which are expected to make up 80 per cent of new vehicles sales by the end of the decade, making up almost 25 per cent of Australia’s total car fleet.

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Nov 10, 2021

Wright proposes a 100-seat electric airliner powered by aluminum

Posted by in categories: energy, sustainability, transportation

US-based Wright Electric has announced a 100-seat electric short-hop aircraft slated to go into service by 2026. It’ll either be powered by hydrogen, or it’ll use recyclable metal in what the company calls an “aluminum fuel cell.”

Wright is working on a number of large electric aircraft projects, including an even bigger 186-seater it’s developing in conjunction with European airline EasyJet and BAE Systems. This would be a “low-emissions” electric, presumably using a fossil-fueled range extender to top up its batteries and extend its flight range to around 1,290 km (800 miles). The partnership is pitching it as a “path” towards clean aviation, a kind of Prius of the skies, that will prove the electric powertrain while waiting for energy storage to come up to scratch.

Wright’s latest project, however, will be totally zero-emissions, and will use high-density energy storage to tackle flights up to an hour in duration – that’s enough for the ~1,000-km (620-mile) hop between Sydney and Melbourne, or London-Geneva, or Tokyo-Osaka, or LA-San Francisco.

Nov 10, 2021

Chile aims to become leader in green hydrogen

Posted by in categories: energy, sustainability

Several countries are now leading the world in producing sustainable energy sources.
One of them is Chile, which has set its sights on becoming a leader in producing green hydrogen.
Many believe it could be a solution to replacing fossil fuels at a competitive price.

Al Jazeera’s Lucia Newman reports from Colina, Chile.
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Nov 10, 2021

Algae utilization and its role in the development of green cities

Posted by in category: energy

Circa 2020

With the rapid urbanisation happening around the world followed by the massive demand for clean energy resources, green cities play a pivotal role in …