Posted on 06/23/2021 7:32:27 AM PDT by DUMBGRUNT
The flywheel has a diameter of one meter and weighs three tons, and can be placed in the garden of a private house.
The proposed solution consists of a hollow, solid cylinder that is rotated around an axis and connected to an electric motor and generator. “When you have the energy to store, the engine drives the flywheel, which accelerates,” said the company's co-founder and general director, André Gennesseaux. “In the other direction, the motor can act as a brake to discharge the electricity.”
Currently, Energiestro offers a standard storage solution with a nominal power of around 10 kW, which corresponds to a charge and discharge cycle in one hour.
According to him, in hot and humid regions, flywheels are much more robust and reliable than lithium-ion batteries.
(Excerpt) Read more at pv-magazine.com ...
Plus it solves the problem of how to move when you throw it into reverse.
Don’t get all sciencey on us now and destroy our dreams.
—”One of these things is not like the other”
Guessing the article was not originally written in English.
More guessing, the rotating solid cylinder spins in a hollow vacuum cylinder. ???
Just my interpretation.
The SOURCE of the electrical energy (be it a flywheel driving a dynamo, a steam engine driving a dynamo, a hydroelectric plant [i.e., a waterwheel driving a dynamo], a wind generator [i.e., a windmill driving a dynamo], or an atomic power plant driving a dynamo) is irrelevant.
There are TWO BOTTLENECKS, i.e., limiting factors: 1. The lines (electrical conductors) leading from the energy source to the battery - such lines will melt if too much electricity is feed through - and 2. The ability of the battery to quickly accept electrical energy (likewise: without melting).
Regards,
2nd Law of Thermodynamics!.....................
_______________________________________________________
Let’s toss entropy in there for fun along with friction and maintenance of said contact points for this not-so-light fly(ing)wheel.
There was a Democrat (of course) back at the beginning of the Obozo Administration that actually wanted to REPEAL the 2nd Law of Thermodynamics!..............
Flywheels are a useful way to store energy. The big question for me is how much loss of energy occurs putting energy into it, and how much when taking energy out?
It is also going to want to stay in its original orientation. The gyroscopic effects would probably be immense.
Interesting stuff!
If it was in simple English at your link? I could find it??
But I did find this and more...https://www.energypower.com.au/live/wp-content/uploads/2019/04/EPSA0008_UPS_Brochure_Data_Jan16_WEB.pdf
I know few specific details, but one 1.5 megawatts sized gyroscope-backup power supply for a server farm had a service life of only five minutes. Then it needs to be recharged.
The gyros had to mounted inside reinforced concrete cylinders inside vacuum bottles underground. If (when) the wheels shred, the flying parts get trapped by the steel and concrete.
Sounds like these have a one hour power life between clouds or ice or snow.
How about huge hydraulic jacks for energy storage? Place them under the Empire State Building and use solar energy to give the tower a huge temporary erection. Libtards should love the idea. A mountain could be carefully cracked to allow vertical movement and hydraulic jacks placed underneath to lift the whole thing. Jacks could be placed deep below a city’s bedrock to store solar energy, and even keep the city dry from the ocean tide flooding in.
—”How about huge hydraulic jacks for energy storage?”
On a bit smaller scale and in the here and now...using hydraulic pumps and accumulators.
This one uses mini turbines plus the hydraulic regen...
They have been testing them in California for a couple of years...https://www.wrightspeed.com/the-route-powertrain
Heat dissipation.
Carbon fiber overwrap for some rifle barrel tubes gives strength.
Musk’s recent motor advancement is a carbon fiber wrap applied under high yarn tension to provide a pre-compression of the copper rotor component. Nearly nil dimensional change up to the 20,000 rpm operating specification.
A hollow tube for a flywheel might just be feasible. Energy stored increases as V squared. Drag increases as V cubed, so put the rotor in a vacuum. Use magnetic levitation to cut bearing losses. Place in a Kevlar bunker as a safety precaution.
Homopolar Generator?
Keith Lofstrom suggested tossing the rigid body structure of a flywheel. He proposed two D-magnets separated by a useful distance, with actively controlled attractive levitation, be applied to warp the path of a steel ribbon 180 degrees at each end of a racetrack path. The materials are thus not stressed so as to approach mechanical failure.
The velocity proposed for application within a vacuum was 11 kilometers per second. Magnetic levitation suspended the weight of the moving mass with low loss of energy. Linear motors magnetically coupled to the ribbon provided for two way transformation between electrical and kinetic energy.
He proposed initial efforts toward storing sufficient energy to load level around peak demand. A projection suggested servicing a peak market could pay for a properly scaled system in three months.
No clue how this works so here is my guess, please advise either way.
The flywheel is spun up to high RPM by an external power source. Once the power source is shut off the fly wheel continues to spin and produce energy for a period of time before it stops?
The heavier the flywheel the longer the spin and higher the energy output?
—”Once the power source is shut off the fly wheel continues to spin and produce energy for a period of time before it stops?”
You got it.
The drive motor would become a generator when driven by the flywheel, the controls would load the flywheel/generator to match demand.
The flywheel spins inside a vacuum chamber to limit air drag and is on some very nice bearings.
Coupled with nano particle frictionless bearings, the concrete flywheel becomes a perpetual generator
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