Archive for the ‘nuclear energy’ category: Page 32

Dec 27, 2021

Magnetic-Confinement Fusion Without the Magnets

Posted by in category: nuclear energy

Zap Energy’s new Z-pinch fusion reactor promises a simpler approach to an elusive goal.

Dec 27, 2021

Tokamak Energy Has Just Made a Breakthrough in Nuclear Fusion

Posted by in categories: innovation, nuclear energy

Magnets could be the ‘secret sauce’ required for viable nuclear fusion.

Tokamak Energy, a company working on nuclear fusion technology, has recently announced a major breakthrough in its research and development. Testing of its cryogenic power electronic technology for its superconducting magnet’s high-efficiency operation was, by all accounts, a big success.

The company’s bid to provide the world with near-limitless energy uses a combination of spherical tokamaks and high-temperature superconducting (HTS) magnets. According to reports, tests of the new power electronics showed twice the efficiency of previous systems.

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Dec 24, 2021

Tetris Handheld Powered By Tritium Cell, Eventually

Posted by in categories: cybercrime/malcode, mathematics, nuclear energy, solar power, sustainability

The idea of a tritium power cell is pretty straightforward: stick enough of the tiny glowing tubes to a photovoltaic panel and your DIY “nuclear battery” will generate energy for the next decade or so. Only problem is that the power produced, measured in a few microwatts, isn’t enough to do much with. But as [Ian Charnas] demonstrates in his latest video, you can eke some real-world use out of such a cell by storing up its power over a long enough period.

As with previous projects we’ve seen, [Ian] builds his cell by sandwiching an array of keychain-sized tritium tubes between two solar panels. Isolated from any outside light, power produced by the panels is the result of the weak green glow given off by the tube’s phosphorus coating as it gets bombarded with electrons. The panels are then used to charge a bank of thin-film solid state batteries, which are notable for their exceptionally low self-discharge rate.

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Dec 24, 2021

Betavoltaic device

Posted by in categories: biotech/medical, military, nuclear energy

(betavoltaic cell or betavoltaic battery) is a type of nuclear battery which generates electric current from beta particles (electrons) emitted from a radioactive source, using semiconductor junctions. A common source used is the hydrogen isotope tritium. Unlike most nuclear power sources which use nuclear radiation to generate heat which then is used to generate electricity, betavoltaic devices use a non-thermal conversion process, converting the electron-hole pairs produced by the ionization trail of beta particles traversing a semiconductor.[1]

Betavoltaic power sources (and the related technology of alphavoltaic power sources[2]) are particularly well-suited to low-power electrical applications where long life of the energy source is needed, such as implantable medical devices or military and space applications.[1].

Dec 24, 2021

Scientists Are Investigating If Time Warps Near a Nuclear Reactor

Posted by in categories: nuclear energy, quantum physics

A team of theoretical physicists at Griffiths University in Australia are investigating a radical quantum theory of time which posits that there is a asymmetry between time and space.

To explain why time points from the past to the future, scientists have proposed that under the second law of thermodynamics, time itself moves towards increased entropy, a measurement of disorder in a system.

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Dec 23, 2021

Nuclear Salt Water Rocket: Is It the Only Viable Way to Get to Other Planets?

Posted by in categories: chemistry, nuclear energy, space travel

Let’s nuke our way to the stars!

What is required to get us to other planets? A lot of things but mainly energy. Our current rockets simply can’t produce enough energy to get us that far.

American aerospace engineer, author, and advocate for human exploration of Mars Robert Zubrin has one idea for getting us to space and it’s a rather interesting one. It’s called Nuclear Salt Water Rocket (NSWR) and it replaces traditional chemical propellant with salts of plutonium or 20 p… See more.

Dec 20, 2021

Efficiency breakthrough cuts cost of fusion power

Posted by in categories: innovation, nuclear energy

Tokamak Energy has announced a more efficient design for the cryogenic electronics in fusion reactors. This provides a 50% reduction in the power needed for the cooling of high-temperature superconducting magnets.

Dec 20, 2021

Science fiction revisited: Ramjet propulsion

Posted by in categories: nuclear energy, space travel

In science fiction stories about contact with extraterrestrial civilisations, there is a problem: What kind of propulsion system could make it possible to bridge the enormous distances between the stars? It cannot be done with ordinary rockets like those used to travel to the moon or Mars. Many more or less speculative ideas about this have been put forward—one of them is the “Bussard collector” or “Ramjet propulsion”. It involves capturing protons in interstellar space and then using them for a nuclear fusion reactor.

Peter Schattschneider, physicist and science fiction author, has now analyzed this concept in more detail together with his colleague Albert Jackson from the USA. The result is unfortunately disappointing for fans of : it cannot work the way Robert Bussard, the inventor of this propulsion system, thought it up in 1960. The analysis has now been published in the scientific journal Acta Astronautica.

Dec 17, 2021

TSMC can fix Taiwan’s stalled green transition

Posted by in categories: biotech/medical, economics, nuclear energy

HONG KONG, Dec 17 (Reuters Breakingviews) — After conquering semiconductors, Taiwan Semiconductor Manufacturing, the world’s biggest chipmaker has a new challenge: kickstarting Taiwan’s stalled green transition. Bureaucracy and red tape have marred the island’s renewable-energy goals. The company’s (2330.TW) voracious appetite for cleaner power will offer a much-needed spark.

Referendums on whether to restart a nuclear power plant and whether to change the location of a planned $2 billion liquid fossil gas terminal highlight how politically contentious the island’s energy issues are. President Tsai Ing-wen has pledged to phase out nuclear power and is hoping gas-fired plants will supply half of the $600 billion economy’s electricity needs by 2025. At the same time, she has promised to increase the share of renewable sources to 20%, from 5.4% in 2020.

On paper that’s doable, but in practice it looks increasingly out of reach. Covid-19 disruptions held up wind and solar projects, but lengthy and complex approval processes are also to blame. Offshore wind developers, for instance, must obtain consent letters from at least eight different authorities as well as approval from the environmental watchdog even to be eligible to bid for projects. Those that make it to the second round must also detail how they can meet local procurement requirements, often onerous criteria given how new the industry is in Taiwan. According to one 2021 estimate, unfinished wind and solar projects totalled $83 billion, among the highest in Asia.

Dec 12, 2021

Power reduced at Fermi 2 ahead of refueling outage

Posted by in category: nuclear energy

DTE Energy’s Fermi 2 nuclear power plant in Newport is gradually reducing its power level in anticipation of its next refueling outage.

DTE Nuclear Communications Supervisor Stephen Tait said in a statement to the Monroe News that operators “will allow our plant to slowly and safely reduce in power level, an action called a ‘coast down,’ until the start of the refueling outage, which is scheduled for February 2022.”

Fermi 2, which is nearing the end of its 21st operating cycle, operated at 93 percent power Thursday.

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