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 ...
A gyrobus is an electric bus that uses flywheel energy storage, not overhead wires like a trolleybus...
Air drag/vacuum containment plays a big part.
Future environmentalists will protest the gyroscopic drag on the Earth’s rotation, causing seconds more to be added to each day as more gyroscopes are used.
I have absolutely no knowledge of electrical engineering. Question: If someone had such a flywheel, could it quickly transfer a full charge to an electric car? Would a bank of flywheels at a filling station allow EV to charge up exactly like an internal combustion vehicle? Two minutes and you’re ready to go 400 more miles?
I’m never really clear on what governs how fast electricity can be transferred from “this” to “that”.
The conductor is a major limiting factor - pull too much, melt the wires/bars.
a hollow, solid cylinder?............................
> . “In this context, we will install a 10 kWh flywheel which will manage fluctuations on the network for one hour if a cloud passes.” <
That was an interesting article. But is the flywheel is only good for one hour of discharge under normal conditions? Am I reading that right?
In order to store large amounts of energy flywheels have to spin at very high rpms. Makes for quite a show when they fail.
> a hollow, solid cylinder? <
I caught that too. I guess a solid, hollow cylinder wouldn’t work as well.
This system buries it underground so it’s contained if it flies apart, which seems like a smart move.
My first thought when they mentioned concrete - It’s a lousy material in tension. I see they have it reinforced, but when she goes, wow. Glad it’s underground.
It would be very difficult to manufacture..................
Wouldn’t work in Florida. The water table is like 2 feet................
Florida Man don’t need no steenking flywheel containment...
Sure! We’ll put it on the roof!....................
Conservation of energy.
However, inputs always must exceed out put due to friction, electrical resistance and other inefficiencies. IOWs, the flywheel requires 12 kw hours of input to provide 10 kw hours of output. Probably more like 12kwh in and 8 out max.
Fine if you don’t mind expending 2 kw of input to provide back up power when the sun don’t shine.
Storage of electricity is rather tedious.
There is something else that needs to be mentiond & I think this is basic physics. If it takes...let’s say 20KWH to spin up the flywheel to operating, you will always get less than that when it is charging into a load. In other words, it will always produce less power than it takes to get the flywheel spinning. What the flywheel would produce as it reaches very low speeds is also questionable.
2nd Law of Thermodynamics!.....................
This system buries it underground so it’s contained if it flies apart, which seems like a smart move.
Exactamundo!
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.