The Mechanical Battery

[@bearnaff9387]

Little known fact - Kevin Costner bomb "Waterworld" was meant to actually save the world. The plan was to channel Kostner's profits to his brother, Dan, who ran US Flywheels. This company was working on a flywheel that stored useful amount of power in a carbon fiber flywheel rotating on permanent magnet bearings in a vacuum. The spec was to develop such a flywheel that could reach speeds of around 100,000 RPM. When the movie bombed, the investment was, alas, lost. The company folded decades ago.

[@DivergentDroid]

Ahh.. thats why he was such a bad actor. I see....

[@anasthase100]

Not really Bear Naff. Waterworld is a vision of the earth after the collapsing , when the surface of the earth will so decrease that water will cover most of it. You can't fight the physical natural laws . . . The sun is burning all in our solar system, and this thermal energy is release in explosions by the planets. This is the cause of the birth of the moons. The earth will explode one day. Dinosaurs are dead because of this periodical / cyclic event . And after, we will be in a kind of water world. This is why they build Machu Picchu ... and this is why one ancient civilization is in Tibet. The High altitude will be the safe place to be when this event will come. lol

[@aurigo_tech]

Waterworld did alright though. Its a myth that it failed financially. Overall it even made a bit plus.

[@anasthase100]

@@aurigo_tech - It's not a myth, it's a cyclic reality.

[@justintothetruth]

Bear Naff The movie didn’t bomb it was one of the most popular movies in the world if not the For its time

[@Hellgie1]

We have two of these at work. They are rotary UPSs. They are spun up with power from the grid. They are constantly spinning at 1800 rpm. Connected to generators, automatic transfer switches will switch to them whenever we loose the grid. It will provide 1.5 MW of power for 15 seconds. When grid power is lost not only do they provide power long enough for diesel generators to fire up but they clutch start their own diesel generators to keep them spinning. No batteries needed!

[@jamesbizs]

Hellgie1 wow.

[@gustavobrtt]

But don't you need batteries because of the transfer shitch delay? For such a big system it's mandatory.

[@incandescentwithrage]

@@gustavobrtt They are the batteries. Transfer switch delay would be the same for a battery system. I believe you are thinking of an "online UPS" which is constantly supplying power through an inverter via the batteries, which are constantly being charged by the grid. No delay with those. Probably used in conjunction with the main Diesel / flywheel UPS in server rooms etc.

[@robh467]

Take this video down now!!!!!!!!!!!!!!! Accelerating faster than Earth's spin in centrifugal forces does what; faster than the solar system...? Exactly We know the benefits of being able to have centrifugal force; it can become a gyroscope, that provides stability In multiple axis, with multiple gyroscopes at different dimensions....well then all you need it to provide resistance in any variable to make force in that direction; i.e. everything we see is a loss of the universe; heat, electricity, ect. If you can spin hundreds of thousands of rotations per, whatever, then you could do millions with a short leap in advancement. So a super electrostatic motor, that is also gyroscopic...a battery, your propulsion, stability control, all in one. Thrown into your flying saucer; you'd fly into a thunderstorm and charge your saucer; spinning your gyroscopic mechanisms up to millions of rpms, all stabilizing each other; and enough power to fly around the Galaxy. Make sure hang solo has done the proper calculation in the computer; zip off into space. Avoid the emp's of Betelgeuse 😘; he made mention of this 🙊🙉 So again; take this video down now Did I mention zero friction lubricants or magnetic suspended bearings. What about new rare metals and materials that cool with friction; I think I've said to much... Again, take this video down now. :Copy and pasted:

[@iamsatan7598]

This isnt a mechanical battery, as much as a mechanical capacitor.

[@internetuser8922]

I was nearby a flywheel energy storage research and manufacturing building when one of them catastrophically failed causing a mechanical explosion that shot tons of twisted metal in all directions. Some of the metal fell through the ceiling where I was working. Luckily nobody was hurt. Any kind of mass energy storage will have issues like this however. Releasing tons of energy all at once is dangerous no matter what the technology is.

[@pooorman-diy1104]

that would be perferct energy source for helicopter/airplanes ... lol

[@mr.personhumanson6871]

Releasing tons of energy all at once is called, an explosion

[@polyglotomathotheophilos1941]

@@mr.personhumanson6871 This made me rofl. :D

[@ynotawoody]

Imagine sitting with something similar to that between your thighs while traveling around 200 MPH. Ever wonder why modern top fuel dragsters have the drivers cockpit located forward of the engine? They weren’t always like that you know. Do an image search using “front engine dragster cockpit” and you will get the idea.

[@internetuser8922]

@kcotte59 the news stories on it can be found on Google if you search: poway ca flywheel explosion

[@notavailable8227]

14:51 man he's loving his job

[@skunkbucket9408]

He's probably watched the "Top Gun" movie intro too many times.

[@Kirealta]

@@skunkbucket9408 duh duh, duh duh, duhduhduhduhduh

[@Kirealta]

@@s-t-f Don't think, it doesn't suit you.

[@AtemiRaven]

Life goals.

[@amaljohnson4008]

😂

[@bramweinreder2346]

This is very educational. It says everything it needs in terms of engineering, and still also makes sense to non-technical people. What appeals to me most is that flywheels, due to their inertia, are able to bridge gaps in power with low sudden changes, so that systems have time to adapt if need be.

[@dreamingforward]

Glad to finally see some coverage of this idea. I like the idea of flywheels that clutch in while breaking and then release it back to the tire when accelerating.

[@TheAnnoyingBoss]

Just like electric basically but even simpler I think. Yeah they'll come with brake pads but the spring can also be the brake if some geniuses that can design simply and reliably can get their hands on it.

[@Gengh13]

Really nice introduction to a topic most of us are not familiar with. Seems one of the best technologies for grid storage.

[@Mnerd7368]

Please do research and make videos about this topics fitsmallbusiness.com/hottest-emerging-tech-jobs-2019/ Top 30 topics/ideas I want you to talk about in your future videos in this new KZbin channel "New Mind": 1. Graphene Battery 2. Nanotechnology 3. Artificial Intelligence, Machine Learning, and Deep Learning. 4. The three levels of artificial intelligence 1. Weak or Narrow Artificial Intelligence 2. Strong A.I. 3. Super Artificial Intelligence 5. Quantum Computers 6. Artificial Intelligent Robots 7. Autonomous Machines 8. Blockchain Technology 9. Bitcoin 10. Hacking and Cryptography 11. 5G, 6G, 7G, and beyond. 5G New Radio Network. 12. Big Data 13. Cloud Computing 14. Parallel Computing 15. Geospatial Drone Technology 16. BioNanotechnology (biology and nanotechnology) 17. Tachyon (Faster-than-light-particles)(hypothetical particles) 18. Alcubierre warp drive (10 times faster than the speed of light) www.universetoday.com/89074/what-is-the-alcubierre-warp-drive/ 19. Nuclear Fusion 20. Space-Based Solar Power 21. Bio-fuels 22. CERN. Large Hadron Collider. Antimatter 23. Dark Energy 24. Dark Matter 25. Quantum Supremacy (Google Tech company) 26. Quantum Mechanics 27. Quantum Teleportation 28. Quantum Time Traveling 29. Interdimensional Travel 30. Interstellar Space Travel

[@frankm3214]

Your renewable energy wind turbines are killing thousands of birds and bats. Do you not care? You Alt-right Nazis care nothing about the environment.

[@benjaminmcintosh857]

@@frankm3214 Your non-renewable coal power plants are killing thousands of people and animals. Do you not care? You Alt-right Nazis care nothing for people. edit: by air pollution

[@DunnickFayuro]

@Frank M Killing birds is better than killing humans. Still, we have to improve on this, but if you choose bats / birds over humans, you're in a special kind of stupid.

[@frankm3214]

@DunnickFayuro ALL species are equal you Right wing Nazis!

[@ChernzObyl]

Imagine if this gets implemented in the automotive world, and after a car accident and the enclosure is broken the flywheel is sent 8km down the road

[@thehemmo5078]

it will not. the weight of the flywheel also gyroscopic loss makes the car inefficient.

[@mackchris5451]

They would need at least two flywheels spinning in opposite directions to cancel out the gyroscopic forces

[@thehemmo5078]

@@mackchris5451 no... it would make it even heavier also I mean the losses when you turn the car the flywheel will lose energy from that rotation.

[@ChernzObyl]

@@thehemmo5078 I think it's supposed to just be a joke

[@GauntletKI]

They already did it in a bus so why not

[@gearloose703]

I didn't hear it mentioned, but we do actually have a ginormous flywheel energy storage system in form of the rotating mass in the electric network, both the generators and the motors. This is not usually apparent, but powerplants do rely on this during switchover etc. and locally dealing with high inertia motors and variable frequency drives they can keep the dc bus energized as long as they spin.

[@avatar1867]

Storing energy as mechanical energy in the form of a flywheel is genius. I particularly like the applications for the system in space. If we were to ever make it in space I believe this would play a huge role in storing mass amoumts electricity. A solar forge. Sweet sweet imagination eh?

[@avatar1867]

Hold on a low resistance hydrogen filled chamber? Excuse me? Maybe he's talking about helium?

[@YodaWhat]

@@avatar1867 -- Hydrogen is widely used for this purpose, even filling the enclosures of giant electric generators. Hydrogen is cheaper than Helium and has higher speed of sound (higher heat transfer) at a given temperature. There is zero explosion hazard as long as no Oxygen is mixed in. So keep the enclosures slightly pressurized!

[@lavernroerig4039]

10hrs spin post input..(?) -Not possible, were Earth also spinning (_______F.E.______)

[@avatar1867]

@@YodaWhat Interesting. I feel this would have great potential done in space itself. However there is tons of radiation in space. utilizing that itself could be very good no?

[@coalsauce4457]

i dont know how long its been since I've been drawn to the content made by a single channel. absolutely amazing content!

[@juliaset751]

Thank you for this video. I remember seeing a video right here on KZbin about a company making flywheel storage that powered up a flywheel during low power demand periods and then generating power when power demand was high. It claimed low cost, near zero maintenance, and the flywheel could spin virtually forever. It used a flywheel in an enclosure with a near vacuum inside.

[@77gravity]

Somewhere around 20 years ago, maybe 30, I saw a car that had a dozen small flywheels, all gimballed. Each unit was about 2 litres volume. They fit into the standard engine space, along with the electric traction motor. This solution seems possible, small units that are easy and cheap to make and install. It gets past the gyro problems of planetary rotation and turning, climbing hills etc.

[@nmarbletoe8210]

wow that's weird and cool

[@sharefactor]

The energy capacity must have been egregious.

[@diGritz1]

I worked on one of these years ago but I could never breed the hamsters big enough or build the flywheel small enough to be effective.

[@hennieodendaal5087]

forgot to put them on roids

[@smartypants4571]

A pig could pass as a giant gerbil !

[@markspc1]

You should put "Nobel prize laureate Dr. Al Gore" to spin the wheel !!!

[@genijable]

You could do the same thing egypt has done and use humans in your flywheel. They used human driven wheels to move a disk and cut stone blocks with it. Just like climing a ladder, but the ladder is infinite.

[@overenergized8961]

New technology and genetic engineering now have hampsters you required.you missed out by half a year.sorry I've now patented this new powerful species but I would be happy to have you work along side with me for the domination of the world of power

[@GRAVESGGS]

I love this video. I don't know about anyone else but for the longest time I've had a sort of obsession with fly wheels. I always knew how useful they could be. I never thought to think how there could be such a science to this and how much effort has and will be put into flywheels. This video almost makes me feel complete lol so weird how a video could make me feel so justified in my feelings for the most random of things.

[@rajatdani619]

I can understand.. Same with me for Flow batteries, aluminum Air batteries and My fav of all Pumped Hydro batteries. So far Flow batteries Has proven it's a worthy successor for li batteries.

[@theyellowarchitect4504]

sounds like you are destined to become an inventor and make some engines to help ppl

[@Larken42]

“Requires little to no maintenance”* *provided preventative maintenance is performed at regular intervals

[@Muonium1]

Was expecting either the usual superficial youtube explication of a topic or a dull robot voice reading a dense wiki page when I clicked, but this is....actually very high quality. Rarely have I seen a treatment of flywheels mention their most remarkable present day use in tokamak ion cyclotron resonance heating. I will now subscribe.

[@engCybernetics]

Elektromagnetic bearings do have losses additional to their supply current: Hysteresis and eddy current losses in the iron.

[@trumanhw]

*What's cool is -- this is the kind of channel that'd attract viewers who'd just know that*

[@derekstarkjr5128]

A true magnetic bearing has to be reinforced with a form of current so the reenergizing does not deplete the magnet .

[@benharris3100]

If you were able to cool it down enough, could you use superconductors to mitigate those losses?

[@thud1241]

Yes, as was shown in the vidy but it has limits related to the requirement for cooling. Advances in materials are possible that may need less cooling.

[@moretrash4you]

thud, the second you said “vidy” is the second you stopped sounding smart.

[@Stasiek_Zabojca]

Great, video about my favourite energy storage system! We need more videos like that, it's such a shame that people are talking only about chemical baterries... :/

[@Mnerd7368]

Please do research and make videos about this topics fitsmallbusiness.com/hottest-emerging-tech-jobs-2019/ Top 30 topics/ideas I want you to talk about in your future videos in this new KZbin channel "New Mind": 1. Graphene Battery 2. Nanotechnology 3. Artificial Intelligence, Machine Learning, and Deep Learning. 4. The three levels of artificial intelligence 1. Weak or Narrow Artificial Intelligence 2. Strong A.I. 3. Super Artificial Intelligence 5. Quantum Computers 6. Artificial Intelligent Robots 7. Autonomous Machines 8. Blockchain Technology 9. Bitcoin 10. Hacking and Cryptography 11. 5G, 6G, 7G, and beyond. 5G New Radio Network. 12. Big Data 13. Cloud Computing 14. Parallel Computing 15. Geospatial Drone Technology 16. BioNanotechnology (biology and nanotechnology) 17. Tachyon (Faster-than-light-particles)(hypothetical particles) 18. Alcubierre warp drive (10 times faster than the speed of light) Starship. www.universetoday.com/89074/what-is-the-alcubierre-warp-drive/ 19. Nuclear Fusion 20. Space-Based Solar Power 21. Bio-fuels 22. CERN. Large Hadron Collider. Antimatter 23. Dark Energy 24. Dark Matter 25. Quantum Supremacy (Google Tech company) 26. Quantum Mechanics 27. Quantum Teleportation 28. Quantum Time Traveling 29. Interdimensional Travel 30. Interstellar Space Travel

[@Stasiek_Zabojca]

@@Mnerd7368 Excuse me, but could you kindly make your own comment, not responding to mine for no reason?

[@MostlyPennyCat]

When I did my work experience at IBM, they had flywheel UPS systems. I suspect you could also use them as surge protectors. And I reckon gasworks regulated supply pressure (gravity battery) It was the early 90s.

[@RWBHere]

Wow! That has to be the longest Description I've ever seen on a KZbin video. Thanks for this one. Much appreciated.

[@spearfish]

I applied for an NSF grant in grad school to study these about a decade ago. The reviewers rejected it because it was a "naive idea"...

[@robertbogan225]

Sounds about right.

[@kamilthegreat2834]

Because it is.

[@elkyubi4281]

kamil wojcik not really

[@zvotaisvfi8678]

@@kamilthegreat2834 will eventually replace the power grid.

[@veronicathecow]

Until your video I really hadn't thought that flywheel storage had a place in the future but now I see some good advantages for static systems, thank you.

[@HadzabadZa]

It will most likely be especially useful in space power plants - weightlessness makes magnetic suspension easier and the system can be shielded from heat, meaning cryo is easier as well.

[@veronicathecow]

@@HadzabadZa good points although would there be problems with moving satalite around due gyroscopic forces?

[@HadzabadZa]

@@veronicathecow I would assume you don't have to move an entire power plant satellite around, just its active components (I'm thinking this kzbin.info/www/bejne/p16vo51paq2WmLM) like mirrors or the transmitter. However there might be a need to rotate it if the orbit isn't on the same plane as the ecliptic, because otherwise the radiators will get exposed. Yeah, the gyro forces are the trickiest part, but I think the benefits outweigh that little nuisance.

[@chengong388]

These busses would behave quite weirdly when running into speed bumps or transitioning into steep slopes...

[@hamjudo]

Some mobile systems have two counter rotating flywheels. Their gyroscopic effects exactly cancel out in normal operation. Obviously, there are some interesting failure modes, if the control system fails to run them in sync, or if the system gets bent out of alignment. Many of those cylindrical containment vessels were housing pairs of flywheels.

[@jhbonarius]

Or even when taking a turn! This was actually a problem with these busses. That's why experiments with these busses were stopped in my country.

[@chengong388]

@@hamjudo Well the internal stress would also be quite insane, I don't know how they manage this on the F1, do they just point the axis straight up to minimize change in axis of rotation?

[@TheItsememario]

Jochem Bonarius Well, when the Bus is turning left or right, the axis of rotation of the bus and the flywheels axis coincide. So there would be no effect on the bus. Another effect however, and a quite useful one at that, was, that the bus wouldn‘t tip into a ditch if one wheel went over the ledge.

[@WPXTacoMan477]

Gyroscopic precession baby

[@arnavrawat9864]

What a marvelously informative and thorough video. Many people don't tell the audience the complete detail. You do and thank you for that.

[@tylerstewart1169]

New Mind. You always explain these topics in the best way. Thank you. Hope more subscribers find you. You deserve it.

[@asifkaka5052]

i did not even know something like this even existed before this video thank you for sharing this kind of information with us.

[@elidennison9902]

Electromagnetic flywheels.... That's some straight up steam punk stuff right there....

[@gregwarner3753]

A reasonable sized pumped hydro project can store gigawatt hours of energy. Gravity is reliable and water does not wear out.

[@robh467]

Yep, and let nature do the work through seasons. Yeah, we understand this. Every stream and river could be made to hydroelectric. Most hydro stations in the country are operating at a fraction of their capacity, and most all are nearly a century old. ....you don't think the powers at be realized how easily they could power the country from hydro a century ago. The results were so alarming, it was killed. All the concrete went towards our national road system; also almost a century old now....

[@robertmills413]

@@robh467 dam.

[@HSFY2012]

The location is the only problem. You cannot move hydro projects nor place them near hospitals and other places that require backup power. If the transmission from the hydro project to the rest of the grid goes, you're fucked.

[@taiwoolaleye6333]

@@HSFY2012 you could build above sea level, and use sea water

[@MrWackozacko]

I have been thinking a top container bottom container set up if no access to dams. One container at the top of the hill, one at the bottom, 50mm pipe and hopefully off the shelf turbine. Solar pumped back up the hill till you need the energy again

[@trulyspinach]

This channel is so underrated. Subscribed!

[@zvisger]

This is just absolutely the best KZbin channel that exists

[@wadebrewer7212]

Incredibly interesting. Thank you for the share, research and much effort in research in assembling this video.

[@rcdieselrc]

The crankshaft converted linear motion to rotary. The flywheel reduced the effects of torque impulses.

[@camerond8176]

Your half right............The crank shaft does indeed convert the motion, but the flywheel takes the engines torque pulses and delivers them to the drive train in a smooth and controlled fashion. If the engine was directly bolted to the transmission, driveshaft or torque tube the vibrations would damage and destroy even the most robust drive train components over time. I guess you could think of an engines flywheel like an electrical capacitor. Now a days, dual-mass flywheels take this a step further in manual transmissions as weight/efficiency is now a major factor and durability is reduced in favor or fuel economy. Torque convertors have all but eliminated the torque pulse problem in automatic transmissions due to their fluid coupling drive. The engines harmonic balancer does the same for the auxiliary components, and eliminates the harmonic hum/oscillation of the belt and it's components when running.

[@fascistpedant758]

@@camerond8176 The converter IS the flywheel, it's mass negates the need for a separate flywheel. Modern converters also lock-up once the vehicle gets up to speed eliminating any effect of the fluid coupling. The harmonic balancer is to reduce oscillations in the twisting of the crankshaft.

[@TdrSld]

Wrong the "Flywheel" does not smooth torque impulses, that's the joke of the harmonic balancer at the front of the crank. and only manual transmission cars (a dying bread in the US :( ) has a true flywheel, all automatics use a flex plate of some sort. The torque converter acts as the rotational mass in automatic cars, the flex plate it there to hold the starter ring (some dodge have the starter ring on the torque converter) and allow flex between the crankshaft and input shaft that's inside the torque convertor

[@rcdieselrc]

@@TdrSld the harmonic balancer dampens vibration in the crankshaft

[@soraaoixxthebluesky]

Chris Russell torsional vibration damper/harmonic damper with rubber insert is a device to control crank vibration and resonance. “90 deg” thing you talk is secondary order vibration. It’s occur twice per crank revolution due to the cosine effect of the rod and crankshaft. Inline-4 engine with a flatplane crank eliminate this vibration via balance shaft

[@edbrown1080]

Reminds me of the toy cars of old days where you spun the tires real fast by dragging them across ground then let the take off.

[@joesterling4299]

Yes! Hadn't thought of those. I had a few myself. Same principle.

[@moretimethanmoney8611]

Or the rip cord Evel Knieval motorcycle toy that would fly across the yard from a single pull!

[@ihavecojones]

We had an idea we put a bike on its center stand pedaled as fash as we could and charged the little cars. We would imagine them wizzing accross the street... We didn know about torque... They just flipped. But then some kid had the "brilliant" idea of puting that charged car in my hair... :)))

[@johncrowerdoe5527]

Those were usually spring powered.

[@Osiris02]

The ones you wound up by pulling back were spring powered. There was another type with wheels geared to a flywheel that you spun up by pushing in one direction for a bit then letting it go.

[@K3K900]

These are wonderful videos, History, learning, and Engineering, sometimes old ideas can have a new opportunity, depending on the time and era, but of course, most people are watching any other thing, Amazing new Mind

[@aldolajak1267]

I did a high school science project on this topic back in the early 70s. I used a six inch diameter, 3/4 inch thick solid steel flywheel spun up by a vacuum cleaner motor. With only the shut down vacuum motor as a load, it would continue to spin in excess of twenty minutes.

[@kennichols3992]

2:02 into the video. I win!! I called it! Before the video started, I thought... storing energy in a small-scale, mechanical, useful way... Gravity (push a load up), tension (push a spring in), or - my first thought - what we already use in piston engines... conservation of angular momentum, i.e. a flywheel.

[@revenevan11]

Yep! I've recently found it interesting that gravity storage methods are finding use in "third-world" and poor or remote places, especially for lighting! With today's efficient, cheap, and lightweight (easy to transport to remote areas) LEDs, there are lights that you hang from a roof or ceiling, and then you fill the bag under them with or otherwise attach something heavy, and as is slowly pulls down the energy is converted to light! Then if you turn the light off it stops descending, which blows my mind since it's such a cool way to visualize the transformation of energy!

[@NoHandleToSpeakOf]

As a kid I read a (russian) book "In search of energy capsule" by Nurbej Vladimirovich Gulia. He used first principle approach to energy storage. Most of this book was about flywheels. It had a great impression on me. There is 2013 reprint with ISBN: 5-93196-591-2

[@minjaekim2074]

TeslaKaniv hello tesla

[@minjaekim2074]

You smell like genious. TESLA

[@v8snail]

@@minjaekim2074 *genius

[@kokokoshka-s7c]

There is also a film - Moment of inertia. kzbin.info/www/bejne/aJ7Kd2V9mamkp7M But only thing you can rely on - auto-translated auto-created subtitles.

[@ARBB1]

Very nice. Besides mechanical batteries, a good topic is the exploitation of the natural batteries in our ecosystem, such as lakes or rivers. Brazil uses these widely.

[@Strothy2]

Not only Brazil in Norway they literally generate almost all their power on that way...

[@AKAtheA]

@divorcedme I would suggest you look at the actual power output of one of those and compare it to the cost of keeping it running. Then look at virtually anything else that's a viable power source...Also, fish tend to migrate in rivers. Water wheels and turbines make this rather difficult for them.

[@mfbfreak]

You gotta keep track of the difference between storage and generation. Some water based accumulators exist, but the energy density of those is pretty low. Hydro-electric generation is a very effective power source, but can of course only be used in countries with big powerful rivers. China has a lot of those. The netherlands... not so much. We have one or two small hydro powerplants that are more symbolic than effective...

[@dougmc666]

@@mfbfreak - China also has 40,000 small hydro installations, there is no need for big powerful rivers.

[@K3K900]

Most people Don't even Imagine that Energy can be stored by simpling spinning a wheel, they also don't even imagine that most of the Energy comes from the Sun and all stars, by heating the wind they create the wind currents for the aerogenerator to move, the same happens with rain that drops from the sky and moves through the rivers and into turbines, they also create plants that eventually become charcoal and oil, amazing channel I am going to look at your other videos, *10/10*

[@brianwixson8434]

Excellent informative documentary. There was a historical flywheel technology not mentioned because it was not for mechanical storage but nonetheless advanced the technical ability to build high energy flywheels. These were for the stabilization of ships at sea to dampen the rolling motion for the comfort of the passengers. They were also used in strategic ballistic missile submarines to stabilize the firing platform.

[@applicareinc]

Thank you for this very educational video. For my home, I plan on geothermal energy coupled to a flywheel for all my electrical needs. This is my vision for the future.

[@Cherb123456]

Could/Should be for the world imho

[@kevinmccune682]

We live on a huge Flywheel called the earth.

[@howard7689]

Makes you wonder why we must ground towers to the earth, or else?

[@taliakellegg5978]

we should put a big generator on earth and get some of that energy

[@electrichanoi7244]

Howard Adams no it doesn’t, if you know even basic electronics you know why week ground things to the earth, It’s the same reason lightning strikes the ground

[@howard7689]

@@electrichanoi7244 as long as you understand

[@rubenayla]

And we can use that energy too kzbin.info/www/bejne/mqLaoYSXp9d3rc0

[@milohobo9186]

I wouldn’t think that using a flywheel energy storage system would be very safe in a moving vehicle, one accident could be catastrophic. But using it in conjunction with solar panels for a house could be quite useful for night time power use.

[@brt5273]

Exactly my thought as well. Worth researching for feasibility.

[@HAXGGEZ]

It's not possible to use it for anything that's not "sitting in place", or moving in a straight line, because the higher the energy in a flywheel, the more energy it takes to accelerate/decelerate it in any direction. It can be used for your house for storing limited amounts of solar energy for sure, but not anything like a "mechanical battery" for cars.

[@glennobiero6775]

But you could let the flywheel maintain its axis of rotation by allowing others axis points connected to the flywheel’s axis in three dimensional space, like a gyroscope toy, to rotate in the frame of the car’s rotation. Second: I am not sure if gyroscope force are affected by centrifugal force, which would mean a cars change in direction has no effect on the gyroscopic forces.

[@anthonyday2419]

Moving vehicles have tanks full of highly flammable liquid, massive lithium ion batteries and high speed reciprocating pistons. All dangerous if not managed properly. Flywheels are perfectly safe in moving vehicles if mounted appropriately in containment housings.

[@huey-fan8335]

@@glennobiero6775 if you would drive left/right, that axis won't affect the flywheel at all, but what about a speedbump? Due to gyroscopic forces it will exert a force on the car! If you have two counterrotating flywheels, they would cancel out each others gyroscopic precession!

[@MollyWi]

Actually the cisco documentary is very good, in that it explains that the flywheel solves 2 problems. 1) Battery hardening, when the battery loses capacity over time. The flywheel has unlimited charge / discharge cycles. 2) The flywheel can be inline with a diesel generator and an electromagnetic clutch can be used to jump start the diesel generator when loss of power. Meaning that the flywheel can restart the diesel generator with failure of the electrical supply.

[@sinephase]

That's pretty awesome that an ancient tech is powering the study of fusion power :D

[@revenevan11]

Pretty poetic, isn't it? The fundamentals and basics of physics and engineering really are as essential as every teacher/professor would have you believe. 😁

[@kfl611]

How do you start the fusion reactor? See that big water wheel over there - open the sluice gates.

[@alternator7893]

14:53 i was gonna mention that some F1 racers used a sort of mechanical battery type flywheel to recover some energy lost during breaking and using that energy to improve acceleration by means of a specially designed cvt transmission

[@JohnSmith-eo5sp]

And Mr Spock would say "fascinating"! Please provide a link for you info

[@alternator7893]

@@JohnSmith-eo5sp here you go kzbin.info/www/bejne/gYGtqH2cmd-Db9E

[@BhavinTolia]

Some of our wrist watches have windings that uses mechanical energy to power devices.

[@jamesbizs]

Some? A LOT of our watches have them. Every watch without a battery. Every clock.

[@ericscaillet2232]

@@jamesbizs think he meant instead of winding it up at certain time with the winder to load the spring but winding it up automatically by your arm movement as you went about your business.

[@DietmarEugen]

@W Winterheart Tissot, Omega, and Seiko had watches in which rotation was used to load a battery. I have a Tissot PR 100 Autoquartz.

[@tomphillips1831]

@@DietmarEugen funny thing is the movements are all by ETA and cost about £30. One haas to wonder where the other £469.99 comes from, the cases are mostly just stainless and plate…

[@tomphillips1831]

Although to be fair the Seiko are pretty darn good and made in house if memory serves.

[@InflatablePlane]

There were a few launching roller coasters that used a flywheel energy storage system. The coaster was launched using a cable and winch. The winch would clutch to a spinning flywheel and start the launch.

[@benterrell9139]

One of the physicists who worked at Culham fusion project in the UK ended up working closely with me for a couple of years. He told me a funny story about that flywheel. Apparently he was asked to calculate what would happen if the flywheel managed to get free from it's mount. He calculated that simply nothing would stop it until it got to the north sea... That's a long way through fairly densely populated land. He was then asked to calculate the impact of a departure should the flywheel be mounted so that it span in the horizontal plane. That was even worse because all of the energy would be converted to heat and kinetic motion in one place. Essentially it would be like a large bomb. Nothing bad ever happened.

[@Jowbreak]

12:48 So you actually used 1m as the radius of the flywheel in stead of 0.5m to calculate the Mach number (at see lvl) of the outer surface. So the Mach number should be around 5.5. That's still fast though.

[@Mnerd7368]

Please do research and make videos about this topics fitsmallbusiness.com/hottest-emerging-tech-jobs-2019/ Top 30 topics/ideas I want you to talk about in your future videos in this new KZbin channel "New Mind": 1. Graphene Battery 2. Nanotechnology 3. Artificial Intelligence, Machine Learning, and Deep Learning. 4. The three levels of artificial intelligence 1. Weak or Narrow Artificial Intelligence 2. Strong A.I. 3. Super Artificial Intelligence 5. Quantum Computers 6. Artificial Intelligent Robots 7. Autonomous Machines 8. Blockchain Technology 9. Bitcoin 10. Hacking and Cryptography 11. 5G, 6G, 7G, and beyond. 5G New Radio Network. 12. Big Data 13. Cloud Computing 14. Parallel Computing 15. Geospatial Drone Technology 16. BioNanotechnology (biology and nanotechnology) 17. Tachyon (Faster-than-light-particles)(hypothetical particles) 18. Alcubierre warp drive (10 times faster than the speed of light) www.universetoday.com/89074/what-is-the-alcubierre-warp-drive/ 19. Nuclear Fusion 20. Space-Based Solar Power 21. Bio-fuels 22. CERN. Large Hadron Collider. Antimatter 23. Dark Energy 24. Dark Matter 25. Quantum Supremacy (Google Tech company) 26. Quantum Mechanics 27. Quantum Teleportation 28. Quantum Time Traveling 29. Interdimensional Travel 30. Interstellar Space Travel

[@xenonram]

@@Mnerd7368 New to KZbin, huh? Posting a comment directed to the channel creator does no good if it is buried in another comment thread. Why would you post that under this thread?

[@Jowbreak]

@@Mnerd7368 I do not make any youtube video's.

[@_c_e_]

I see mistakes happen at sea as well.

[@kasuraga]

@@xenonram except the channel Creator clearly saw OPs message lol

[@fridaycaliforniaa236]

So actually, the flywheel batteries are more like the big capacitors in a circuit ? Good for peak/burst demands, but not as good for continuous slow delivery ?

[@phoqueoeuf]

Little different, capacitors have a quick charge/discharge rate. These are more comparable to chemical batteries, calling them mechanical batteries is probably the most accurate description. It would be cool to see the RC curve of a flywheel versus that of a capacitor

[@adityaarora6753]

Flywheels are actually the mechanical analog of an inductive load as opposed to a capacitor which is more similar to a spring.

[@АгронДепартье]

If they break into pieces it acts like a blast. Russian scientist suggest using wheel made from long tape rather than single piece wheel - that is much safer.

[@mrmaniac3]

With added bonus of magnetic data storage!

[@PongoXBongo]

@@mrmaniac3/videos Voyager 3, powered by gold audio cassette. ;)

[@simonito1715]

That's what's in the video also. They even put them underground 👍

[@АгронДепартье]

@@simonito1715 I missed the point about steel stripe/tape...

[@permaventura634]

@@АгронДепартье I guess the idea was that instead of exploding into pieces, it might just (as it loses integrity) sort of unwind, thus dissipating the energy gradually. That's the way I got it, anyway.

[@MarkLeinhos]

HOLY COW your videos are great. I've only enabled alerts for two channels on KZbin and this is one of them. Can't wait to see the next one, and I dread getting caught up!

[@brianbrewster6532]

What a fascinating subject matter! I learned so much watching this. Makes you wonder why more of us don't have these sitting in our basements. If coupled to Solar Panels, imagine these spinning up during peak of day, then off loading energy at night. This might very well be the wave of the future.

[@Mr.Fabrication007]

Flywheels are continually losing energy, will likely never evolve to residential power storage because there are many better options that store 99% of the energy until needed- The gravity battery, one of the newest powerplants in development is simply a giant grandfather clock the size of a building. It uses solar in the day to operate hoists lifting huge weigts to the top of the structure, When nightime demand hits simply release a weight. GRAVITY BATTERIES ARE WAY BETTER FOR STATIONARY APPLICATIONS

[@p1nkfreud]

Wow! 10 hours of spin for the flywheel at idle! Imagine how much better it would have been if they vacuum-sealed the flywheel's chamber instead of filling with H2!

[@hunterwilk]

Some (if not most) of the energy you'd gain by using a vacuum would have to be used to create and maintain that same vacuum. There was probably a cost-benefit analysis that said h2 is the best compromise between vacuum and normal air.

[@MNanme1z4xs]

This is best video in a while, faith in humanity restored

[@wombatcitystudios]

What is the Energy Return on Investment of mechanical batteries? This is a crucial fundamental factor in regards to sustainability

[@nmarbletoe8210]

It would be negative, but the less negative the better.

[@wombatcitystudios]

N Marbletoe - I don’t think you understand EROI

[@nmarbletoe8210]

@@wombatcitystudios I think I had it wrong, it wouldn't be negative, but it would be less than one. If you put 100 joules in to get the flywheel spinning, and an hour later you get 990 out, and the efficiency would be 99% over that hour. EROI would be 0.99. Is that right?

[@supercunthunt7756]

@@nmarbletoe8210 dude you didn't get what he meant. And you can never put more energy out of a system than you do in that systems. He asked if I have 100 watts to power that system as storage, how much energy can I use a day later (its not possible to be over 100 watt in that case)

[@nmarbletoe8210]

@@supercunthunt7756 100 in, 99 out is possible though. ooh crawp I put 990 lol.

[@Jayhawker340]

Look up the 2012-2014 Audi R18. It was a Le Mans LMP1 race car that won overall the 24 hours of Le Mans. Amazing car. Used a V6 turbo diesel and a flywheel hybrid system. Won in 2012, 2013 and 2014. Due to changes in the regulations and the fact the market was demanding lithium batteries in their road cars instead Audi switched from the flywheel system to a lithium battery hybrid system. Still was amazing tech and the first hybrid car to ever win Le Mans.

[@petezzzz]

Wow. One of the most concise and informative videos on the Internet. Thanks!

[@scratchdog2216]

4:45 If it works it'll be Flywheel Emergency Electrical System. 'FEES', like every other utility.

[@corax2012]

Sounds like ocean tidal action would be a good way to power these up.

[@rmarbertin8131]

Just not the turbine type, please. There are other ways that don't chop up marine life. We make life for them hard enough as it is.

[@ryanburbridge]

Awesome man so glad your still at it! Been busy with other things lately but when i get time i always look for one of your videos. If you keep this up i see no stopping you! To the Top my friend! Have you thought about doing a video introducing yourself? Or do you plan on staying in the shadows. Heck it’s worked for AvE! Lol it almost turns into its own thing. Just wanted to stop by and say hi

[@danapeck5382]

Pumped hydro storage, especially closed loop examples, are worth consideration for a future episode. Lots of working examples, scalable to multi-gigawatt

[@johnfarias7230]

Thank you so much and was a very good episode never looked at the flywheel like that how could anybody give this a thumbs down so well put together some people have no respect

[@jaikumar848]

I have to say "THIS CHANNEL IS GOLD👑"

[@alexcave7573]

I agree

[@scratchdog2216]

Flywheels were used on early aircraft carriers to launch the planes. Also for aircraft engine starting.

[@mistere5857]

You mean reciprocating aircraft engines? Yeah and they still use them today because they are basically car engines with car starters.

[@scratchdog2216]

@@mistere5857 I was thinking the hand-cranked inertia starters used on some single-engine WW2 fighters.

[@mistere5857]

@@scratchdog2216 oh yeah those are definitely more in line with the principle of a fly wheel as presented in the video

[@jgjg5182]

"at this speed the outer edge of the flywheel would be spinning at mach 11" This is officially my new favorite energy storage system, I fucking love it

[@Darthmufin]

Something that does not appear to be talked about much on youtube is mechanical energy in the form of clockwork storage. Such as using an electric motor or human operation to wind something with very high potential energy while connected to an electric motor. It's a neat way of storing energy and i've only found a few videos on youtube actually using this function, otherwise it's just mechanical to mechanical like a wind up toy, not using the stored mechanical energy to turn a generator shaft.

[@GeorgeOu]

You just got a new subscriber. I'm learning new stuff from your videos.

[@schievel6047]

2019: our of despair we start putting in pullback motors in our cars

[@vincentrobinette1507]

That's basically the definition of a Hybrid.

[@ericscaillet2232]

Of maybe a rubber band powered unit😉

[@planpitz4190]

At 06: 51 : The fast spinning vane wheel quits and has just left the 707 jet engine!

[@robertmills413]

thanks!

[@lukehemmington4078]

06:51 your welcome

[@madvulcan8964]

I'm intrigued by the concept but I'll stick to my Aluminum batteries thank you very much. I'm not dismissive of the Fly Wheel, it has a place in energy storage but I don't think mechanical batteries is the philosophers stone one size fits all solution. I envision a divers options of energy production and storage from Coal to the Atom, from Lithium to the Fly Wheel all working together.

[@812guitars]

I remember in the 90s Mercedes Benz was experimenting with a flywheel cylinder in the trunk for power. But my science teachers didn’t have a clue as to why. And this video answered that question.

[@satanicmonkey666]

All of your videos are excellent in quality.

[@rotaryenginepete]

I was hoping you would mention the accumulator battery hybrids too

[@danballarin]

Let's talk about "reinventing the wheel"..... I've always hated that phrase.

[@calholli]

The wheel was never invented, it was discovered. A round river rock or a fallen tree trunk are both wheels.

[@compfox]

A wheel on itself is a disk. A wheel plus an axis do the trick.

[@thatsomeone3818]

@@compfox A large log on its side still serves both of those roles, so long as you're willing to replace the logs at the front of whatever you're rolling as your load rolls forward.

[@calholli]

@Norm T Not invented, "Discovered" ... Round rocks and round logs were rolling down hills long before humans were even walking upright. But hey, if you didn't see it- I guess it didn't happen. Just like No bear shits in the woods.

[@calholli]

@Norm T Let me guess, you think that man invented fire too don't you. smh

[@nobilprize]

you have to read about the chemical-mechanical battery. you will really love it

[@andynichols3464]

I know a fellow that knows the man who was in charge of the construction of the facility for a flywheel battery company in Austin, Tx. The company purchased an existing building and excavated a basement to conduct testing without the City of Austin (COA) knowing. Apparently the idea of an un-tested spinning object of significant mass with the potential of breaking loose from it's bearings and wreaking havoc on the public was an issue with the COA. The company was thought the basement would contain the off chance of an accident and continued with R&D. They were successful in their endeavors and still in business today. Thanks for reading.

[@exetercollegeuktechnologyc1323]

Thanks for this video - it seems that global industry and manufacturers are beginning to realise the great virtues of flywheels. About 10 years ago I was basing my university level student projects on the development of a Flywheel Energy Storage System (FESS) for use in the third world. My brief was that it must require minimal maintenance, it must have high energy density, it should be used for decades - even centuries - with no loss of storage capacity or efficiency, it must be totally sustainable, require only abundant and cheap materials and totally un-toxic to the planet - a challenging brief which only FESS designs or mechanical gravity based designs come anywhere close to fulfilling. Over several years of development, we decided that it was much better to go for low angular velocity (

[@StreamlineCarry]

Once we have high temperature superconductors and high strength/weight graphene flywheels these designs will be able to exceed the energy density of chemical batteries for much less running cost. Exciting stuff!

[@SunriseLAW]

Electric transmission system can be made more efficient run along/near roadways to power capacitors-mostly and a fairly small battery. . 70% of energy to go up the hill can be returned to the system as it goes down the hill.

[@exetercollegeuktechnologyc1323]

Modern Flywheel systems are much more than 70% efficient

[@SunriseLAW]

@@exetercollegeuktechnologyc1323 I was not commenting on the flywheel. I was commenting upon regeneration of electricity used to go up hills as vehicles go down hills and the concept of a 'direct' connection to a re-built electric transmission infrastructure. Off topic? Not really as the flywheel has limits.

[@brandonb9452]

SunriseLAW Do you mean putting regenerative braking on all cars?

[@SunriseLAW]

​@@brandonb9452 Yes, to fill up the capacitors and much-smaller batteries or to put it back into the 'system'. Tesla (e.g.) looks great, they make 300,000 cars while 17 million new and 25 million used cars are sold in USA every year. Obtaining lithium...which is plentiful...and processing it into batteries is not optimal when talking about tens of millions. A semi-hard wired solution makes the vehicles much lighter. Figuratively and metaphorically: The entire system could be built out by melting down what we have and reforming it.

[@KaizokuSencho]

Go read 'The Windup Girl' by Paolo Bacigalupi - in a post-oil economy they use springs made out of superstrength materials for power storage.

[@ninaslightam4472]

KaizokuSencho great book!

[@53jed]

Good book... but

[@KaizokuSencho]

@@53jed but what??! Don't leave us hanging!

[@53jed]

the apocalypse in the book was based on the idea that the ocean rose because of global warming. Except for that, the rest of the book is plausible. Good good guys, bad guys sufficiently evil, everybody;s flawed in some way.

[@bernardoalbano1816]

One of the best videos i have seen in a while

[@ESCOTCH]

I lived in Kinshasa and saw the recharging poles for the flywheel bus, but never saw a bus. Was told about them by some old guys in town...

[@laurencecope7083]

I bet the bus was fun going round a corner.

[@jaihind9043]

It wouldn't be a problem as the flywheel is mounted horizontally not vertically (....that would have been an interesting experience).

[@MilesPrower1992]

@@jaihind9043 what if you went up a hill? Would you tip?

[@jaihind9043]

@@MilesPrower1992 Tip sideways!!! :D

[@smokedoak5464]

It has small wheels in the front bumper section. I wonder why :D

[@davidgrossman6892]

It, it's operator and all passengers where never heard from again...the gyro in the bus goes round and round!

[@Genubath1]

Another type of mechanical energy storage that is interesting are big towers that have heavy hanging weights that are lifted by surplus energy and are lowered to produce energy. A lot like old cuckoo clocks. They don't require expensive control systems or cryogenic cooling or magnetic bearings.

[@-_-----]

I just did some calculation on this: A 2-meter cube of steel (assuming 7.5g/cm3 density) lifted to a height of 60 meters would provide 9800 watt-hours (9.8kWh) of energy at 100% efficiency. (7.5g/cm^3 * 8,000,000cm^3 * 1kg/1000g) * 9.8m/s * 60m = 35280000kgm^2/s^2 [...then] * 1h/3600s = 9600kgm^2/s^3 Assuming you needed 2kW over an 8-hour night (16kWh), and you made your weight out of lead (11.34g/cm3), you would need a 2-meter-cubed weight of lead lifted to a height of ~51 meters - plus error margin, since that's assuming 100% efficiency. (Same equation as above, just work in reverse, flip everything over, and cancel out units to solve for meters... the '5m' in the equation above): 16000kgm^2/s^3 * 3600s * 8h * s^2/9.8m * 1/(11.34g/cm^3 * 8,000,000cm^3 * 1kg/1000g) = 51.83m The weight-tower would have to be fairly beefy, and the weight would have to be channeled to eliminate dynamic load (tectonic sway). The connecting cables would have to be fairly beefy as well, and rated for wear. You could weld the weight container together on-site, then place lead blocks inside by hand. That wouldn't be too tough. The last tricky part would be designing the dynamo, and rating its consumable elements for wear. That's a lot of money just to store 16kWh. You could combine the cost of construction and the estimated cost of consumables versus batteries. I'm no fan of the Tesla Yuppie-Hipster-Techno-Grey-Goo-Dystopia, but just comparing raw numbers, a Tesla Powerwall can hold ~13.5kWh (7kW peak output, 5kW continuous, more than enough for a residential house's overnight consumption), lasts for ~12 years (Version 2, at least), and costs ~13K. I think batteries are just too damn efficient for much else to compete... I just want other companies to get their butts in gear so that Ol'Musky has some competition and prices come down.

[@Genubath1]

@@-_----- Thanks for the calculation, much appreciated. I wonder what the price would look like at scale? Water towers hold a lot of weight (even more than your lead example), so I wonder what sort of potential energy they can hold.

[@-_-----]

​@@Genubath1 Actually, I was surprised by the amount of mass that water towers hold aloft when I actually crunched the numbers... A water tower with a 400,000 gallon capacity held 50 meters aloft = 1,514.16 cubic meters = 1,514,160kg @50 meters (approximating, since not all of the fluid is at that level...) ≈< 206kWh. I still think that the engineering requirements will force us to look for battery-based solutions... but it is interesting to crunch the numbers.

[@elementssolutions5473]

@@-_----- Could you please calculate how efficient this engine can be?. kzbin.info/www/bejne/moWsqIaaYrmIZpI

[@-_-----]

@@elementssolutions5473 Ahh shit, that's way more complex. I'll take a look when I have some downtime.

[@davidhenderson3400]

12:48 I wonder what the g-force would be. That is a lot of g's trying to pull that flywheel apart.

[@GFSwinger1693]

No need to wonder: a=rω^2

[@davidhenderson3400]

@@GFSwinger1693 Well?

[@GFSwinger1693]

@@davidhenderson3400 I'm not going to hand you the answer, calculate it. There is your formula.

[@zamundaaa776]

765176g or 7.5 million m/s^2 if anyone's still wondering.

[@davidhenderson3400]

@@zamundaaa776 That is crazy. That is g's pulling out. If that was g's pulling in that thing would be a black hole. How does it not get pulled a part? And thank you for doing the math.

[@raymiller1383]

Totally agree with your last line, this tech will grow and change. I can imagine a flywheel storage system used on a space station, or energy platform in space, the only bearing loss would be due to gyroscopic correction due to a low to no gravity environment, and would not need a pressure vessel to maintain a vacuum. A guarded high speed flywheel with enough mass could potentially provide stored enough power for all kinds of uses in space, or anywhere really. It’s interesting to hear that this is used in power grids already, that I did not know.

[@Jonathan-ol9si]

This shit would never be used in space

[@apsdev]

If you use a flywheel in space you probably need two .. that counter rotate. Because if you spin up the flywheel the space station will start to spin in the other direction. Or if you spin down the flywheel by using its energy the space station will spin up also. The ISS space station actually has four 100kg or 220pound flywheels that act as gyros the "Control moment gyroscopes" .. they spin at a constant speed of 6600 rpm .. and if they rotate them the space station also rotates. So that way they can control the position of the space station without using fuel. Of cause a flywheel for storage will work against the gyro's i guess making them less usefull. Makes you wonder if the Control moment gyroscopes will generate power if you spin them down.

[@chrisbingham3289]

It mentioned that due to the earths rotation that the bearings would get damaged. Thinking about this would it not be better to mount the hole thing in a gimbol the same as the compasses on ships. ?

[@Obsidian-Nebula]

It sounds like it's more of a capacitor than "battery"

[@UditDey]

why exactly?

[@sillyarms8493]

@@UditDey because of the use case. Flywheels and capacitors are used for short bursts of power

[@jaythomas3180]

capacitors are batteries

[@bovanshi6564]

What is preventing us form creating massive, wide and slow-moving flywheel storage? I would assume that the cost would go up for the low loss bearing & mounting setup, but it feels like the compounding efficiencies gained from scale would make this worth it.

[@MrJackandEmily]

Maybe there's a way to use the earth as a flywheel? 😁

[@majorfallacy5926]

Energy scales linearily with mass, but quadratically with velocity. So you always want to operate them at a high rpm, at which point mass is limited by construction and material properties. If you go to high, you are risking instabilities, deformations and outright mechanical failure ripping your whole system to shreds. To add to that, constructing the "optimal" flywheel might be a nice experiment, but it wouldn't be practical. Instead of using a super high quality alloy to get an extra 30% maximum energy stored, you can just buy 2 cheap ones and get 100%. Or build a dam

[@hamjudo]

In a hypothetical fully charged ideal flywheel with no safety factor, all of the structural material in the flywheel will be under maximum tension. The ideal units will have a nearly massless hub and a very thin walled cylinder. A real world flywheel will always store less energy, but a huge fraction of its total energy is still going to be in that comparatively thin-walled rotating cylinder. Adding weight that doesn't provide tensile strength actually reduces the theoretical maximum energy storage. More weight, without more strength reduces the maximum rotation rate. Since energy storage is a linear function of mass and the square of the velocity, anything that reduces velocity is bad.

[@hamjudo]

@@MrJackandEmily The spin of the Earth relative to the orbit of the moon is the primary flywheel that is powering tidal energy. The lesser one is the spin of the Earth relative to its rotation around the Sun. The Earth-Moon system will probably still be generating tides when the Sun becomes a red giant in about 4 billion years.

[@corpsiecorpsie_the_original]

Standby losses for flywheel energy storage are huge compared to other methods. Also, flywheels are best used for rapid charge and discharge.

[@alibizzle2010]

Williams used one on their F1 cars a few years back

[@leoa4c]

Only tested. Never raced.

[@stu1701E]

I saw a presentation by Flybrid (mentioned at the end of the video) in around 2008 about the development of a prototype - nice to see they managed to make it work.

[@brandonb9452]

alisdair butler isn’t a rotating engine accomplishing the same thing as a flywheel?

[@tinkikumari1034]

This is a great video please continue making videos like this

[@Sohave]

A honorable mention is also the Parry People Movers. Which is basically a prof of concept of flywheel technology on the railways. Trains require high bursts of energy to accelerate their huge mass, but have low friction and require significantly less energy to maintain their speed. thus the huge engines required are energy wasting surplus for a considerable part of the journey. A Parry People Mover has a smaller engine than a conventional railbus but the engine maintains a spinning flywheel that is used to power the vehicle during acceleration, and can recoup the energy from braking, resulting in a super efficient rail vehicle.

[@alexrogers777]

I cant believe I've never known of these, this is so cool!! How'd you find out about this?

[@alexrogers777]

@Robert Pearce what? Like you know everything

[@refoliation]

Maybe we can just doom some mythical being to eternally roll rocks up a hill for us,

[@carlosandleon]

lmao

[@TheKrausdog]

My 10yr old told me Syphilis was the guy rolling the rocks up the mtn! Yikes. Not guffawing out load was very difficult.

[@grantcawby7225]

Using electromagnets to hover hundreds of kilograms of spinning metal for energy storage. Why did no one tell me the future happened?

[@Zhagg1]

Combined with chem storage, a power manager could coordinate 3 sources (chem, FES, grid) to smooth out renewable energy grid. This could be done at household level, all the way to municipal etc.

[@jimmycao7550]

One of the best videos i seen all day. Thanks

[@bronzedivision]

If only people would put effort into the one solution that will actually work, nuclear power.

[@onionman500_m8]

Thorium is the best isn't it

[@super-sim1665]

98% wasted fuel?

[@bronzedivision]

@@super-sim1665 Correct! Isn't that great? Nuclear is the best power supply already AND there's still room for improvement; 98% more by your estimation. By contrast 'renewable' power doesn't work now even when the material cost is ignored and the invention of new technology is assumed and there's no room for improvement. Most renewable power options are already quite close to their thermodynamic maximums.

[@super-sim1665]

@@bronzedivision All of Scotland is powered by wind turbine energy. Bill Gates has a plan to use the toxic waste but until that they just don't have anyway to deal with large amounts of waste fuel or store it.

[@grantaum9677]

Nuclear has never worked, thats why it's still subsidised