The Mechanical Battery Explained - A Flywheel Comeback?
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Published 2021-01-05
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All Comments (21)
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What do you think of flywheel energy storage? Any other tech I should look into? Be sure to check out my video on Small Modular Reactors Explained - https://youtu.be/cbrT3m89Y3M
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When you mentioned control moment gyros on the International Space Station, those are used to control the station’s ATTITUDE, not altitude. In other words they control the spacecraft’s orientation, not how high above Earth it is.
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We are close to our goal of using a hamster for our energy
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Interesting stuff. As a matter of interest, the WW2 German Tiger tank's engine is started by a 15kg flywheel. The flywheel is hand-cranked up to a great speed [with much effort] Then a clutch is engaged which turns over the 24 litre, 700hp Maybach engine
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I remember seeing/hearing about this solution some years ago. Then I found it strange the implementation was so lacking, thus with a bit of search I found out the same thing that is blocking the wider usage of this technology: the price of installation. Nice touch with the Swiss bus!
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I used to work for a chip manufacturing in NY. We had flywheel systems that would backfeed the plant if we lost normal power, and when the wheel fell below a certain speed then it would signal the diesel generators to start up. The flywheel chamber was filled with helium to cut down on air drag
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I worked at a coal mine in 2010. They had used a flywheel to buffer the electrical grid from their dragline for many years. They recovered and stored energy in a flywheel when the dragline lowered its bucket. The energy stored in the flywheel was used as the bucket was loaded and hoisted. The flywheel protected the local grid from wild fluctuations as well as reduced the energy costs to the mine because they were able to scavenge energy that would've otherwise been wasted.
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Magnetic suspension and vacuum sealed means they could spin almost indefinitely. I’d be really interested to see what kind of long term storage these things are capable of.
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Just came across this - I remember being in college in the late 1980s and reading about an experimental carbon-fiber flywheel that was manufactured to EXTREMELY tight tolerances- UNFORTUNATELY they found out this resulted in a 'detonation' type failure as fractures propagated quickly through the flywheel- and obliterated their testing lab (nobody hurt). So, 'high strength materials" isn't always as important as "progressive failure materials" when things eventually break.
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The Joint European Torus, an experimental fusion reactor used two 650 tonne flywheels to store the power to start the reactor. It took nine minutes to spin up a flywheel and twenty seconds to slow it down. Each flywheel could output 400 megawatts and was used to supplement the power from the grid for the magnetic containment coils.
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I remember the little toy cars that had a fly wheel you needed to spin up to make go racing across the floor haha
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I remember giant flywheels in the sugar mill 50 years ago. Driven by huge steam pistons, the flywheel smoothed out the rotational motion that did all the mechanical work. They were beautiful but also very dangerous. They had been operating for a century and safety concerns weren't a big thing when built in the 19th century.
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I find this very interesting as we have used flywheel UPS in the IT industry for at least 10 years to ensure that our datacenters stay operational during power loss situations. As they have a limited runtime, there is always a generator of some sort to take over when the flywheel stops spinning. I think that using them for grid storage and power conditioning is a good use of the technology. Thank you for taking the time to discuss it!
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I work at a hospital,we have two caterpillar flywheel UPS systems for our critical power.Supposed to hold for 30 minutes until the generators spool up and take over.
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Hear me out, a flywheel made of lithium ion batteries
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I spent a few years researching high speed flywheel energy storage for a wealthy Texas philanthropist. We used a toroid magnetically levitated in a vacuum. No frictional losses. The materials were exotic, the machining tolerances and balancing were critical. Also any spinning mass must be gimballed, because as the earth rotates the flywheel wants to stay in the same plane.
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Amazing content Im electric engineer and you just make me feel like a young student at college... Just love how you edit and the script... the content. Its an amazing piece of info. Thanks
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For the ISS, that would be attitude, not altitude. I’d always considered a motor/flywheel/generator for a home office surge protection system
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I think the draw of flywheels is they’re such an elegant technology —just a really big perfectly engineered spinning mass— and that’s why I like them. I also like the idea that the solution to the technological age is a mechanical one.
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Thanks for a great video and your analysis. I've been looking exactly for such cost comparison and forecast for all storage technologies, especially flywheels.
