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Category: energy – Page 135

Skyscrapers dominate city skylines, but these massive glass-walled structures can be made more energy efficient through the addition of thermally efficient photovoltaic (PV) windows, according to an analysis by researchers at the National Renewable Energy Laboratory (NREL).

Their findings, published in the journal One Earth, outline building design rules that can yield a structure with net-zero or even net-positive energy consumption.

“There are preconceived notions of what an energy-efficient building looks like, and it usually is not highly glazed, and it probably isn’t very tall,” said Lance Wheeler, a scientist at NREL who specializes in integrating PV technology into . “We found that there are other ways to build high-efficiency buildings.”

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Microsoft said today that security vulnerabilities found to impact a web server discontinued since 2005 have been used to target and compromise organizations in the energy sector.

As cybersecurity company Recorded Future revealed in a report published in April, state-backed Chinese hacking groups (including one traced as RedEcho) targeted multiple Indian electrical grid operators, compromising an Indian national emergency response system and the subsidiary of a multinational logistics company.

The attackers gained access to the internal networks of the hacked entities via Internet-exposed cameras on their networks as command-and-control servers.

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Ukraine’s grid operator Ukrenergo said that emergency power cuts were being enacted in all Ukrainian regions after widespread Russian attacks on infrastructure on Wednesday.

Ukrenergo, commenting in a statement on Facebook, said power cuts were needed to prevent further technical failures in the energy system after severe damage from repeated strikes since mid-October.

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NASA’s unpiloted Orion moonship, sailing smoothly toward a remote lunar orbit after a spectacular low-altitude flyby Monday, is operating in near-flawless fashion, mission managers reported Monday, out-performing expectations on a flight to pave the way toward the first piloted mission in 2024.

An analysis of the huge Space Launch System rocket that boosted the Orion capsule on its way early Wednesday showed it performed almost exactly as expected, taking off atop 8.8 million pounds of thrust and producing a ground-shaking shock wave that literally blew the doors off launch pad elevators.

The core stage’s four upgraded space shuttle main engines and twin solid-fuel boosters propelled the 322-foot-tall rocket out of the atmosphere and into space almost exactly as planned. At main engine cutoff, the SLS was within 3 miles of its target altitude and within 5 mph of the predicted velocity.

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“The LNG procurement environment has changed completely. Procurement can also be said to be in a state of war,” they told the ministry.

A dwindling supply of natural gas worldwide has sent countries racing to secure shipments of the key fuel. The squeeze is due to a lack of investment in LNG export projects, according to the trade ministry.

At the same time, European buyers are set to step up their imports of LNG from next year after Moscow cut off pipeline-borne gas flows to the continent in retaliation to Western sanctions. They have already been in “huge competition” with Asian buyers for exports from Qatar to replace the Russian supplies.

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The devices are so sensitive that even a soft tap is enough to make them glow. The researchers also made the devices glow by vibrating them, drawing on their surfaces, and blowing air on them to make them bend and sway—which shows that they could potentially be used to harvest airflow to produce light. The researchers also inserted small magnets inside the devices so that they can be magnetically steered, glowing as they move and contort.

The devices can be recharged with light. The dinoflagellates are photosynthetic, meaning they use sunlight to produce food and energy. Shining light on the devices during the day gives them the juice they need to glow during the night.

The beauty of these devices, noted Cai, is their simplicity. “They are basically maintenance-free. Once we inject culture solution into the materials, that’s it. As long as they get recharged with sunlight, they can be used over and over again for at least a month. We don’t need to change out the solution or anything. Each device is its own little ecosystem—an engineered living material.”

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Asphaltenes, a byproduct of crude oil production, are a waste material with potential. Rice University scientists are determined to find it by converting the carbon-rich resource into useful graphene.

Muhammad Rahman, an assistant research professor of materials science and nanoengineering, is employing Rice’s unique flash Joule heating process to convert asphaltenes instantly into turbostratic (loosely aligned) graphene and mix it into composites for thermal, anti-corrosion and 3D-printing applications.

The process makes good use of material otherwise burned for reuse as fuel or discarded into tailing ponds and landfills. Using at least some of the world’s reserve of more than 1 trillion barrels of as a feedstock for graphene would be good for the environment as well.

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face_with_colon_three circa 2020.

“I believe that water will one day be employed as fuel, that hydrogen and oxygen which constitute it, used singly or together, will furnish an inexhaustible source of heat and light, of an intensity of which coal is not capable.” – Jules Verne, The Mysterious Island (1874).

We have come a long way since science fiction writer Jules Verne wrote this visionary sentence, but hydrogen has still not emerged as a major source of energy. ESA is setting out to change this through the latest Open Space Innovation Platform (OSIP) call for ideas.

Not only are fossil fuels a limited resource, when burned they also pollute the air with greenhouse gases that warm up our planet. In recent years, we have increased our use of renewable energy – from sunlight, wind and waves, for example – but the machines that generate energy from these sources are made from rare materials that we must dig ever deeper underground to find.

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It’s all thanks to nanoclusters.

A new nanoscale 3D printing material developed by Stanford University engineers may provide superior structural protection for satellites, drones, and microelectronicsAn improved lightweight, a protective lattice that can absorb twice as much energy as previous materials of a similar density has been developed by engineers for nanoscale 3D printing.

According to the study led by Stanford University, a nanoscale 3D printing material, which creates structures that are a fraction of the width of a human hair, will enable to print of materials that are available for use, especially when printing at very small scales.

Phuchit/iStock.

An improved lightweight, a protective lattice that can absorb twice as much energy as previous materials of a similar density has been developed by engineers for nanoscale 3D printing.

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