Archive for the ‘energy’ category: Page 23

Dec 12, 2022

This Floating ‘Pyramid’ Wind Turbine Will Produce More Energy at a Lower Cost, Company Says

Posted by in categories: energy, sustainability

Clean energy will reduce dependency on Russia and Arab countries for oil and gas.

What if the weight could instead be distributed between multiple support poles? That’s the design Eolink has in mind; its floating turbine swaps out the single large pole for four thinner ones angled towards each other in a pyramid shape. This not only distributes the weight of the turbine’s pieces, it allows the whole structure to be lighter.

The turbine Eolink plans to build as a proof of concept will have a generating capacity of five megawatts and weigh 1,100 tons. Its base will be a square with each side 171 feet (52 meters) long, and its rotor’s diameter will be 469 feet (143 meters). For reference, that’s about one and a half Big Bens, or four-fifths of the Washington Monument.

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Dec 12, 2022

Orbital Bombardment

Posted by in categories: energy, space

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They say you should always attack from the high ground, and there’s no higher ground than from orbit. Today we’ll examine orbital strikes, asteroid bombardment, kinetic weapons, dropships, and how to defend from them.

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Dec 11, 2022

World’s largest wave power plant to be built in Turkey

Posted by in category: energy

It will be jointly built by a Swedish and a Turkish company.

Eco Wave Power (EWP) has signed a deal with Oren Ordu Eneas to build the world’s largest-ever wave power plant on Turkey’s Black Sea coast, according to a press release by the Swedish company published on Thursday.

The project would start with a 4MW pilot in the port of Ordu. It would then move forward to a 77MW plant which would consist of a fixed, modular array of steel floats hinged to piston-equipped arms.

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Dec 11, 2022

IIT-G’s Cooking Stove Saves Fuel Up To 50%, Reduces 80% Emissions

Posted by in categories: energy, government

A s of 1 February 2021, there are about 280 million domestic LPG (liquified petroleum gas) consumers in India, according to Union Minister Dharmendra Pradhan. By March 2022, the Government of India expects that there will be over 300 million consumers. Indian Oil, the country’s largest fuel refiner, claims that it will import 50% more cooking gas to ensure the supply of LPG remains uninterrupted for its bottling plants.

It’s imperative to find heating solutions that are more efficient.

Moreover, the Government of India has been encouraging wider adoption of LPG to replace coal and firewood to improve air quality as well. But according to researchers at IIT-Guwahati, the thermal efficiencies of conventional domestic LPG cooking stoves available in the market are low (60–68%), and emissions are high (CO: 220–550 ppm, NOx: 5–25 ppm).

Dec 9, 2022

Earth has been hit by an ‘unusual, intense blast of energy’ from a nearby galaxy

Posted by in categories: energy, space

And the galaxy from which the GRB came from is also strange. It is young and still forming stars – the opposite of the only other known nearby galaxy that has played host to such an event.

“This event looks unlike anything else we have seen before from a long gamma-ray burst,” said Jillian Rastinejad, from Northwestern University, who led the study. “Its gamma rays resemble those of bursts produced by the collapse of massive stars.

Given that all other confirmed neutron star mergers we have observed have been accompanied by bursts lasting less than two seconds, we had every reason to expect this 50-second GRB was created by the collapse of a massive star. This event represents an exciting paradigm shift for gamma-ray burst astronomy.

Dec 9, 2022

Canada’s TC Energy has shut the Keystone pipeline after one of the largest onshore spills saw 14,000 barrels leak into a Kansas creek

Posted by in categories: energy, sustainability

Canada’s TC Energy has shut the Keystone pipeline — which connects Alberta to the US — after 14,000 barrels of crude oil spilled into a creek in Kansas.

Pipe operator TC Energy announced the pipeline’s shutdown at 5.35 a.m. CT on Thursday. The Canadian company said it initiated an energy shutdown and response at 8 p.m. CT on Wednesday after alarms went off detecting a pressure drop in the system.

The cause of the leak is not known. It is not immediately clear as of presstime when the pipeline is expected to come back online.

Dec 9, 2022

Researchers harvest electricity from wood soaking in water

Posted by in categories: energy, engineering

Water and wood may one day be all that’s needed to provide electrical power for a household. At a time when energy is a critical issue for many millions of people worldwide, scientists in Sweden have managed to generate electricity with the help of these two renewable resources.

The method reported by researchers at KTH Royal Institute of Technology focuses on what naturally happens after is placed in water, and the water evaporates. Transpiration, a process in which water moves through a plant, is constantly occurring in nature. And it produces small amounts of , known as bioelectricity.

Yuanyuan Li, assistant professor at the Division of Biocomposites at KTH, says that with some nanoengineering of wood—and pH tuning—small but promising amounts of electricity can now be harvested.

Dec 8, 2022

“Dynamic Soaring” Could See Interstellar Probes Reach Super Speeds

Posted by in categories: chemistry, energy, space

Covering interstellar distances in a human lifetime is far from easy. Going at 1 percent of the speed of light, it would take over 400 years to reach the closest star, and we have not been able to propel any spacecraft even close to that speed. But a new method aims to get to those speeds and maybe more – and it takes inspiration from the mighty albatross.

Chemical propulsion can be very useful in achieving high speeds pretty quickly, but there’s the drawback in that you need to carry the fuel with you, which means you need to be able to generate more thrust to shift the extra fuel and so on. It’s a huge issue when it comes to rocket science. A realistic alternative is ion propulsion, used to slowly and successfully maneuver the Dawn spacecraft, but it would take an equally long time to reach enough speed with such a steady but small acceleration.

Solar sails hold a more intriguing possible approach. Proposals such as the Breakthrough Starshot see lasers used to massively accelerate a spacecraft the size of a credit card to one-fifth the speed of light. But, you need to build a very powerful laser. A similar method using sunlight might also work, although not up to such a high speed.

Dec 7, 2022

Astronomers trace powerful gamma rays to a never-before-seen stellar phenomenon

Posted by in categories: energy, space

But a team including Zhang has a suggestion for what might have caused it: the merger of a neutron star not with another neutron star, as is common for short gamma ray bursts, but with a white dwarf. White dwarfs are larger than neutron stars, but not nearly as big as the massive stars that cause supernovae, which would account for the length and intensity of the unusual burst.

Since there are lots of white dwarf-neutron star binaries and events like this are rare enough that it’s the first to be observed in half a century of looking, he suggests it needs some qualifications: first, the white dwarf needs to be “close to the upper mass limit,” and afterwards the two need to merge into a rapidly-spinning magnetar, which would “inject additional energy into the kilonova.”

Dec 7, 2022

Ethereum’s energy switch saves as much electricity as entire Ireland uses

Posted by in categories: bitcoin, cryptocurrencies, energy

The success of The Merge concept may now serve as a roadmap to enable a switch from Proof of Work to Proof of Stake in Bitcoin.

Ethereum, the world’s second-largest crypto asset by market cap, has drastically changed its energy usage, saving a country-size proportion of power consumption.

This radical update most likely reduced the power consumption of the crypto network by 99.84 percent to 9.99 percent, according to a paper published by peer-reviewed data-science journal Patterns on Tuesday.

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