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Archive for the ‘energy’ category: Page 34

Mar 15, 2024

Study shows inverting fusion plasmas improves performance

Posted by in category: energy

To become commercially viable, fusion power plants must create and sustain the plasma conditions necessary for fusion reactions. However, at high temperatures and densities, plasmas often develop gradients in those temperatures and densities. These gradients can grow into instabilities such as edge localized modes (ELMs).

Mar 14, 2024

Photon-like electrons in a four-dimensional world discovered in a real material

Posted by in categories: energy, materials

Because of their differences from standard electrons, Dirac electrons are expected to add unprecedented electronic properties to materials. For example, they could be applied to to perform computation and communication with extraordinary efficiency and low energy consumption.

To develop such technology, scientists must first understand the net properties and effects of Dirac electrons. But they generally coexist with standard electrons in materials, which prevents unambiguous observation and measurement.

In a recent study published in Materials Advances, Ryuhei Naito and colleagues discovered a method enabling selective observation of the Dirac electrons in materials. Using , to directly observe unpaired electrons in materials to distinguish differences in character, the research group established a method to determine their scope of action in the materials and their energies.

Mar 14, 2024

Researchers prove fundamental limits of electromagnetic energy absorption

Posted by in categories: energy, materials

Electrical engineers at Duke University have determined the theoretical fundamental limit for how much electromagnetic energy a transparent material with a given thickness can absorb. The finding will help engineers optimize devices designed to block certain frequencies of radiation while allowing others to pass through, for applications such as stealth or wireless communications.

Mar 14, 2024

Cargill’s wind-powered cargo ship completes fuel-saving test voyage

Posted by in categories: energy, food

Results are in from the six-month test of the Pyxis Ocean, a cargo ship outfitted with fiberglass sails as part of a fuel-saving test by Cargill Inc.

The Wayzata, Minn.-based agriculture giant said the partially wind-powered cargo ship saved an average of 3 tons of fuel per day and 11.2 tons of carbon dioxide emissions. Cargill calculates that this savings would be the equivalent of taking 480 cars off the road.

In optimal conditions, the ship saved nearly 11 tons per day. That’s roughly a 37% decrease in carbon emissions. According to Ship and Bunker’s global 20 port average, that’s a savings of about $656 per metric ton in fuel. Most cargo ships are fueled by bunker fuel, also known as heavy fuel oil.

Mar 14, 2024

Scientists ‘achieve the highest power density in the world’ for EV wireless charging

Posted by in category: energy

Oak Ridge National Laboratory (ORNL) researchers wirelessly charged a light-duty passenger EV at 100 kW with 96% efficiency – a new milestone.

Scientists at the US Department of Energy-funded ORNL wirelessly charged the EV using polyphase electromagnetic coupling coils with rotating magnetic fields.

ORNL’s patented system transferred power to a Hyundai Kona EV across a five-inch air gap using electromagnetic fields, a process similar to the wireless charging of small consumer devices.

Mar 13, 2024

Giant ‘sand battery’ holds a week’s heat for a whole town

Posted by in categories: energy, materials

A new industrial-scale ‘sand battery’ has been announced for Finland, which packs 1 MW of power and a capacity of up to 100 MWh of thermal energy for use during those cold polar winters. The new battery will be about 10 times bigger than a pilot plant that’s been running since 2022.

The sand battery, developed by Polar Night Energy, is a clever concept. Basically, it’s a big steel silo of sand (or a similar solid material) that’s warmed up through a heat exchanger buried in the center, using excess electricity from the grid – say, that generated during a spike from renewable sources, when it’s cheap.

That energy can then be stored for months at a time, with reportedly very little loss, before being extracted as heat on demand. This could theoretically be converted back into electricity, although with some energy loss. But Polar Night says that the most efficient method is to just use the heat itself.

Mar 12, 2024

Scientists Uncover Atomic Secrets of Photosynthesis

Posted by in categories: energy, food

The mysteries of photosynthesis have been unveiled at the atomic level, providing significant new insights into this plant super-power that transformed the Earth into a green landscape over a billion years ago.

John Innes Centre researchers used an advanced microscopy method called cryo-EM to explore how the photosynthetic proteins are made.

The study, published in Cell, presents a model and resources to stimulate further fundamental discoveries in this field and assist longer-term goals of developing more resilient crops.

Mar 10, 2024

World’s largest sand battery set to slash emissions in Finnish town

Posted by in categories: energy, information science

Having refined its charging algorithms, Polar Night Energy is now ready to scale up the storage tech in Pornainen.

Once completed, the new battery will be integrated with the network of Loviisan Lämpö, the Finnish heating company that supplies district heating in the area.

“Loviisan Lämpö is moving towards more environmentally friendly energy production. With the Sand Battery, we can significantly reduce energy produced by combustion and completely eliminate the use of oil,” says CEO Mikko Paajanen.

Mar 9, 2024

This new Mack MD Electric is a mobile EV charging station

Posted by in categories: energy, sustainability, transportation

The benefits of fleet electrification are well-known, but the question of feasibility is still very real in the minds of many heavy fleet managers. To help fleets understand how electric trucks can fit into their operations, Mack Trucks is offering a mobile off-grid charging system.

Mack made the announcement earlier this week at the American Trucking Associations Technology and Maintenance Council Annual Meeting, where they showed off renderings of a Mack MD Electric carrying a “renewable propane” powered generator and 120 kW charger. While somewhat clunky as a concept, it should do a reasonable enough job of pretending to be permanent infrastructure to give a fleet manager a sense of whether or not an electric solution will work for them.

“This system will allow the customer or dealer to charge trucks – whether it’s a demo unit or a multi-unit ride-and-drive event at the dealer – without having charging infrastructure readily available at their site,” says Ryan Saba, energy solutions manager for Mack Trucks. “Mack hopes that this option will help customers more easily experience the benefits of e-mobility and a more sustainable transportation option.”

Mar 9, 2024

Report: US broke clean energy growth record by 12.5% in 2023

Posted by in category: energy

The ACP power annual market reports for 2023 shows a drastic increase in clean energy power prodution in the United States of America.

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