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41
Rumors on physics-twitter of a room temperature superconductor. But the material is so simple it could have been produced in an 1890’s lab. Would be a sad indictment of current science if true… (twitter.com)
posted 1 year ago by BidenIsAGroomer 1 year ago by BidenIsAGroomer +41 / -0
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– subbookkeeper 4 points 1 year ago +4 / -0

What actually is the benefit of superconductors? as I understand them it allows you to transfer electrical current from point A to B with far greater efficiency then currently. You can normally only do this near absolute 0 because it's a problem of entropy that energy is always lost in transfer. Is that correct? How much more efficient is energy transfer from point to point with superconductors compared to normal conductors?

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– RoulerBleu 13 points 1 year ago +13 / -0

Total electricity lost in transport from powerplant to the home is about 10%. There is a test project for a superconductor 50km powerline in South Korea.

I don't think it will ever be cost and ressource-effective to switch electricity to that. It's also a nightmare scenario for cooling system failures causing very long blackouts.

Everything about repairing a broken cable will be alot more complex and expensive.

We're headed into a Competence crisis. Switching energy distribution to something so highly complex and delicate is begging for major fuck-ups.

High-voltage transport loss are small, 2% to 4%, the biggest loss is after the switch to low-voltage for close distribution.

You need to use alot of energy to cool the superconductor. Is it going to break-even? Scrape some energy after counting cooling? How is that going to justify the costs?


For now, under very high pressure, there is a superconductor under 92°K, which means it can be cooled to that state with liquid nitrogen (Nitrogen (edit :) boiling point is 77°K ), making its use financially accessible.

The need for very high pressure limits use.

Superconductors are already used for high definition Magnetic Resonance Imaging

CERN's Large Hadron Collider ( scientific research )

There are applications for nuclear energy.

A few short powerlines for testing technology.

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▲ 1 ▼
– subbookkeeper 1 point 1 year ago +1 / -0

Thanks, are you a bot though?

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▲ 2 ▼
– RoulerBleu 2 points 1 year ago +2 / -0

Not a bot, just an akward human.

Cheers.

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▲ 4 ▼
– BidenIsAGroomer [S] 4 points 1 year ago +4 / -0

Here’s the best list I found :

https://twitter.com/alexkaplan0/status/1684044616528453633

Here’s a more skeptical analysis:

http://large.stanford.edu/courses/2016/ph240/mclaughlin1/

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