Archive for the ‘energy’ category: Page 28

Mar 15, 2020

NASA: Same terrific power! Less annoying radiation!

Posted by in category: energy

Mar 12, 2020

Nuclear power plants are coming to the battlefield

Posted by in categories: energy, military

Lasers o.o

They could supply energy to far-flung bases, power laser weapons and charge electric vehicles.

Science and technology Mar 14th 2020 edition.

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Mar 11, 2020

Decentralized Microgridding Can Provide 90% of a Neighborhood’s Energy Needs, Study Finds

Posted by in category: energy

The new approach could even pave the way for 100 percent self-sufficiency in power, heat, and water.

Mar 10, 2020

High-density hybrid powercapacitors: A new frontier in the energy race

Posted by in categories: energy, internet

Hybrid “power capacitors” that can store as much energy as lithium batteries, but with much higher charge/discharge rates, a huge range of safe operating temperatures, super-long lifespans and no risk of explosion are already in production, says a small Belgian company that’s been testing them and selling them for some time.

Chinese family-owned company Shenzhen Toomen New Energy is tough to find, at least on the English-language internet, but Belgian electronic engineer Eric Verhulst bumped into Toomen representatives on a tiny stand at the Hannover Messe expo in Germany back in 2018, while looking for next-gen battery solutions for an electric mobility startup he was running.

The Toomen team made a hell of a claim, saying they’d managed to manufacture powerful supercapacitors with the energy density of lithium batteries. “Of course, that’s an unbelievable claim,” Verhulst told us. “It’s a factor of 20 better than what, for example, Maxwell had at the time. So I took my time, went over there, looked at their tests, did some tests myself, and I got convinced this is real. So at the end of 2018, we made an agreement to become their exclusive partner.”

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Mar 8, 2020

Chiral Higgs Mode in Nematic Superconductors

Posted by in categories: energy, evolution

Nematic superconductivity with spontaneously broken rotation symmetry has recently been reported in doped topological insulators, M x Bi 2 Se 3 (M = Cu, Sr, Nb). Here we show that the electromagnetic (EM) response of these compounds provides a spectroscopy for bosonic excitations that reflect the pairing channel and the broken symmetries of the ground state. Using quasiclassical Keldysh theory, we find two characteristic bosonic modes in nematic superconductors: the nematicity mode and the chiral Higgs mode. The former corresponds to the vibrations of the nematic order parameter associated with broken crystal symmetry, while the latter represents the excitation of chiral Cooper pairs. The chiral Higgs mode softens at a critical doping, signaling a dynamical instability of the nematic state towards a new chiral ground state with broken time reversal and mirror symmetry. Evolution of the bosonic spectrum is directly captured by EM power absorption spectra. We also discuss contributions to the bosonic spectrum from subdominant pairing channels to the EM response.

Mar 7, 2020

Study: Modern electric grid needs smarter modeling for improved resilience

Posted by in categories: energy, engineering

Power systems and communication networks are increasingly interdependent, which can affect the response and recovery times when problems occur.

Today’s smart involves components that talk to each other, sending signals over networks to keep flowing smoothly and efficiently. But what happens when the “conversation” goes quiet?

A team of researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory and the Illinois Institute of Technology recently explored the literature on this link between the and its communication networks, finding that many studies do not adequately consider the two-way nature of this relationship and its impact on grid resilience. Their paper, “Electric Power Grid Resilience with Interdependencies between Power and Communication Networks—A Review,” was recently published in IET Smart Grid, a journal from the Institution of Engineering and Technology.

Mar 6, 2020

Elon Musk’s Australian Battery Farm Has Saved $116 Million AUD In Two Years

Posted by in categories: Elon Musk, energy, food, sustainability

Elon Musk was challenged to fix South Australia’s energy problem in 2017, and just two years on he’s saved Australians millions.

Mar 4, 2020

High energy Li-Ion battery is safer for electric vehicles

Posted by in categories: energy, engineering, transportation

A lithium-ion battery that is safe, has high power and can last for 1 million miles has been developed by a team in Penn State’s Battery and Energy Storage Technology (BEST) Center.

Electric vehicle batteries typically require a tradeoff between safety and . If the has and , which is required for uphill driving or merging on the freeway, then there is a chance the battery can catch fire or explode in the wrong conditions. But materials that have low energy/power density, and therefore high safety, tend to have poor performance. There is no material that satisfies both. For that reason, battery engineers opt for performance over safety.

“In this work we decided we were going to take a totally different approach,” said Chao-Yang Wang, professor of mechanical, chemical and materials science and engineering, and William E. Diefenderfer Chair in Mechanical Engineering, Penn State. “We divided our strategy into two steps. First we wanted to build a highly stable battery with highly stable materials.”

Feb 29, 2020

This MIT Scientist Is Building Batteries Using Modified Viruses

Posted by in category: energy

Going Green

Experts told Wired that the technique could eventually be used to extend a battery’s charge and discharge rate by forcing the millions of viruses to create a highly ordered electrode structure, with shortcuts for ions moving through electrodes.

“Something my lab is completely focused on now is trying to get the cleanest technology,” Belcher told the magazine.

Feb 29, 2020

Scientists Spot the Biggest Known Explosion in the Universe

Posted by in categories: energy, space

Astronomers have spotted a cosmic blast that dwarfs all others.

A gargantuan explosion tore through the heart of a distant galaxy cluster, releasing about five times more energy than the previous record holder, a new study reports.

“In some ways, this blast is similar to how the eruption of Mt. St. Helens in 1980 ripped off the top of the mountain,” study lead author Simona Giacintucci, of the Naval Research Laboratory in Washington, D.C., said in a statement. “A key difference is that you could fit 15 Milky Way galaxies in a row into the crater this eruption punched into the cluster’s hot gas.”

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