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Category: energy – Page 100

Wireless power would be worth the hype if it were widespread — modern life is burdened by a tangle of power cables and an endless hunt for plugs. But despite its potential, wireless power technology is still limited by range.

But Ericsson and PowerLight Technologies have made one dramatic form of wireless power, called optical beaming, work in a proof-of-concept experiment. Their demonstration showed that laser delivery of power to a portable 5G base station could be just around the corner.

The promise of wireless power: Wireless power is straight out of a sci-fi film: electrical power transmitted from place to place through a vacuum or the air. There is no need for wires, poles, outlets, or those pesky USB cubes, which are always lost when you need them most.

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CATL, a Chinese battery manufacturer, has created a condensed battery that it says could help power electric aircraft while meeting the required safety and energy standards.

The company claims the battery’s energy density is 500 watt-hours per kilogram, making it much more robust than it looks. This means that the battery can push out more power from a lighter component than the current options.

The belief is that condensed batteries will open the door to improved power systems for both electric cars and even the aviation field. Finding more efficient ways to handle power generation while also remaining lightweight is essential for both these fields, especially as electric cars try to offer longer ranges.

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Canada’s largest oilsands companies under the umbrella of the Pathways Alliance are accused of greenwashing and making false environmental claims. via @torontostar

Greenpeace Canada alleges the consortium’s ad campaign, “Let’s clear the air,” is greenwashing — when a company makes false or misleading claims about the environmental attributes of their business.

“Our request to the Competition Bureau regarding the Pathways Alliance’s misleading ad campaign was accepted and has set off an official inquiry into the dubious advertising practices of the Pathways Alliance,” Greenpeace Canada’s senior researcher and writer, Nola Poirier, said in a statement. “We think the public deserves to be told the truth about the environmental harm caused by fossil fuel production, not fed misleading sound bites by industry.”

Mark Cameron, vice-president external relations at Pathways Alliance, said the campaign acknowledges the oilsands represents a significant share of Canada’s emissions and collaborative efforts must be made across the industry and with government to deliver “responsibly produced oil.”

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Helion, the clean energy company with its eye firmly on the fusion prize, announced a couple of years ago that it had secured $2.2 billion of funding to help it develop cleaner, safer energy at a commercial scale in November 2021. Today, it is starting to reap the fruits of its labor, announcing an agreement to provide Microsoft with electricity from its first fusion power plant, with Constellation serving as the power marketer and managing the transmission for the project.

Fusion has been the energy goal for over 60 years, as it produces next to no waste or radioactivity while processing and is far less risky than fission. But achieving the same process that occurs in stars has proved mighty difficult to contain, with it taking more energy to keep the reaction under control than it can generate. Progress has been slow and steady, with the potential rewards keeping companies such as Helion focused on the reaction. Helion has been working on its fusion technology for over a decade. To date, it has built six working prototypes and it expects its seventh prototype to demonstrate the ability to produce energy in 2024.

With this in mind, Helion’s plant is expected to be online by 2028 and has a power generation target of 50MW, or greater, with a one-year ramp-up period. While that might seem a long way into the future still, it’s significantly sooner than the projections had suggested.

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In 2010 Prof. Shlomo Havlin and collaborators published an article in the journal Nature proposing that the abrupt electricity failure causing the famous 2003 Italy blackout was a consequence of the inter-dependency of two networks. According to Havlin’s theory the dependency between the power network and its communication system led to cascading failures and abrupt collapse. Havlin’s seminal work ignited a new field in statistical physics known as “network of networks” or “interdependent networks” and paved the way for understanding and predicting the effects of the interaction between networks.

The main novelty of Havlin’s model is the existence of two types of links that represent two qualitatively different kinds of interactions. Within networks, links between nodes describe connectivity such as or communication connections. Between networks, on the other hand, links describe dependency relationships in which the functionality of a node in one network depends on the functionality of a node in the other. The communication hubs need electricity and the electric power stations depend on communication control. This dependency leads to a cascading effect in which failure of a single node in one of the networks could lead to an abrupt breakdown of both networks.

Over the past decade or so since, Havlin, from the Department of Physics at Bar-Ilan University in Israel, and others have applied this concept to a variety of abstract systems, such as the internet, road traffic, the economy, infrastructure, and more. But being a theorist, Havlin was unable to manifest the hypothesis on real experimental physical systems and thus the theory couldn’t be confirmed in controlled experiments, nor could it be implemented for device-type applications.

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Engineers at the University of Pittsburgh are bringing concrete into the 21st century by reimagining its design. Concrete, which has its roots dating back to the Roman Empire, remains the most widely utilized material in the construction industry.

A new study presents a concept for the development of smart civil infrastructure systems with the introduction of metamaterial concrete. The research presents a concept for lightweight and mechanically-tunable concrete systems with integrated energy harvesting and sensing capabilities.

“Modern society has been using concrete in construction for hundreds of years, following its original creation by the ancient Romans,” said Amir Alavi, assistant professor of civil and environmental engineering at Pitt, who is the corresponding author on the study. “Massive use of concrete in our infrastructure projects implies the need for developing a new generation of concrete materials that are more economical and environmentally sustainable, yet offer advanced functionalities. We believe that we can achieve all of these goals by introducing a metamaterial paradigm into the development of construction materials.”

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