When it comes to the need to somehowaccumulate energy, many immediately begin to think about the battery. Of course, what could it be yet. Nevertheless, there is another way that is not used very often, but it has very good prospects. Especially, against the background of the development of other technologies. Such developments were even used in the production of public and freight transport. Their beginning dates back to the Soviet Union, but recently, technology has begun to be applied more and more often. A few years ago, when the regulations allowed, it was used even in Formula 1. We will open the veil of secrecy and tell how this rather simple but ingenious invention works, and about the person who devoted his life to this.
- 1 What is a flywheel?
- 2 Where are flywheels used?
- 3 Super Flywheel Gulia
- 4 Super Flywheel Efficiency
- 5 Where are super-flywheels used?
What is a flywheel?
We will talk today about super-flywheels and about their creator Nurbey Gulia. Although it seems that the flywheel is something outdated and purely technical, but in the new electric world it has a place.
Flywheel (flywheel) - massive rotatinga wheel used as a drive (inertial accumulator) of kinetic energy or to create an inertial moment, as is used on spacecraft.
The flywheels themselves were invented a very long time ago and evensuccessfully applied in the industry of those years. There are even finds in Mesopotamia and ancient China that confirm the use of such devices. True, then they were made of burnt clay or wood and performed other functions.
Where are flywheels used?
Due to its massive nature and the laws of physics that accompany the movement of the flywheel, it has found application in many modern mechanisms - from transport to industry.
The simplest application is to saverotational speed of the shaft on which the flywheel is mounted. This may come in handy while operating a machine. Especially, in those moments when he experiences sharp loads and it is necessary to prevent a drop in speed. It turns out this kind of damper.
Probably the most frequent place to meetflywheels, is an internal combustion engine of a car. It allows you to save the engine speed when the clutch is turned off. This reduces the impact on the transmission, as the gear changes while the engine is running at speeds above idle. In addition, this provides greater comfort and smoothness of movement. True, on racing cars, the flywheel is very lightweight to reduce weight and increase the speed at which the engine spins.
Also, flywheels are often used forstabilization of movement. This happens due to the fact that the wheel, which is the flywheel, during rotation creates a gyroscopic effect. It creates strong resistance when trying to tilt it. This effect can be easily felt, for example, by spinning a bicycle wheel and trying to tilt it, or picking up a working hard drive.
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Such power interferes with driving a motorcycle,forcing to resort to control, especially at high speed, but it helps a lot, for example, to stabilize the ship during pitching. Also, by hanging such a flywheel and taking into account that it is always in one position relative to the horizon, we can fix its deviations from the body of the object and understand its position in space. The use of such properties of the flywheel is relevant in aviation. It is the rotating flywheel that will determine the position of the fuselage of the aircraft in space.
Super Flywheel Gulia
Now, after a long enough introduction andbackground, we’ll talk directly about super-flywheels and how they help to save energy, without any chemical compounds in it.
The super flywheel is one of the typesflywheels designed to store energy. It is specially designed to accumulate as much energy as possible without the need for other purposes.
Such flywheels are heavy and spin very quickly. Due to the fact that the rotation speed is very high, there is a risk of rarefaction of the structure, but this is also thought out. The flywheel itself consists of wound turns of steel plastic tape or composite materials. In addition to the fact that such a design is stronger than monolithic, it is still being destroyed gradually. That is, when exfoliating, the flywheel will simply slow down and become entangled in its own parts. I think it’s not worth explaining that a flywheel rupture, which rotates at a speed of tens of thousands of revolutions per minute and weighs at least tens of kilograms, is fraught with very serious consequences.
In addition, to ensure even greatersecurity, you can put a system with such a flywheel in an armored capsule and bury it several meters in the ground. In this case, the moving elements will certainly not be able to harm a person.
An added benefit of using armored capsuleswill create a vacuum in it, which will significantly reduce the effect of external forces on the movement. Simply put, this can be minimized or even removed the resistance of the gaseous medium (in the usual case of air).
As additional forces preventing rotation,the resistance of the bearings on which the flywheel is mounted also acts. But it can be installed on a magnetic suspension. In this case, the forces of influence are reduced to such a minimum that can be neglected. It is for this reason that such flywheels can spin for months. In addition, the magnetic suspension allows you not to think about the wear of the system. Only the generator wears out.
It is the generator that is the elementwhich allows you to generate electricity. It simply connects to the flywheel, and receiving the rotation transmitted to them generates electricity. It turns out an analogue of a conventional generator, only for this it is not necessary to burn fuel.
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To store energy at a time when notload, the flywheel spins and thereby “holds a charge”. Actually, a combined option is possible by analogy with conventional batteries, which can simultaneously give off energy and charge themselves. To spin the flywheel, a motor generator is used, which can both spin the flywheel and take the energy of its rotation.
Such systems are relevant for energy storage inhouseholds and charging systems. For example, a similar system as conceived by Skoda engineers should be used to charge cars. During the day, the flywheel spins up, and in the evening gives off a charge to electric cars, without loading the city network in the evening and at night. At the same time, you can charge slowly from one flywheel or quickly from several, from which more electricity will be "removed".
Super Flywheel Efficiency
Super Flywheel Efficiency for Allapparent archaism reaches very high values. Their efficiency reaches 98 percent, which is not even dreamed of conventional batteries. By the way, the self-discharge of such batteries also occurs faster than the loss of speed of a well-made flywheel in vacuum and on a magnetic suspension.
You can recall the old days when people startedstore energy through the flywheels. The simplest example is pottery circles, which were untwisted and twisted while the artisan worked on the next vessel.
We have already decided that the design of the super flywheelsimple enough, it has high efficiency and is relatively inexpensive, but it has one drawback that affects the efficiency of its use and stands in the way of mass implementation. More precisely, there are two such cons.
The main one will be the same gyroscopicthe effect. If this is a useful side property on ships, then this will be a big obstacle in road transport and it will be necessary to use complex suspension systems. The second minus is the fire hazard in case of destruction. Due to the high rate of destruction, even composite flywheels will generate a large amount of heat due to friction on the inside of the armored capsule. In a stationary facility this will not be a big problem, since a fire extinguishing system can be made, but in transport it can create a lot of difficulties. Moreover, in transport, the risk of destruction is higher due to vibrations during movement.
Where are super-flywheels used?
First of all, N.V. Gulia wanted to use his invention in transport. Even several samples were built that were tested. Despite this, the systems did not go beyond testing. But the application of this method of energy storage was found in another area.
So in the USA in 1997, Beacon Powertook a big step in the development of super-flywheels for their use in power plants at an industrial level. These super-flywheels could store energy up to 25 kWh and had a power of up to 200 kW. The construction of the 20 MW station began in 2009. It was supposed to level the peaks of the load on the electric network.
There are similar projects in Russia too. For example, under the scientific supervision of N.V. Gulia himself, Kinetic Power created its own version of stationary kinetic energy storage devices based on a super-flywheel. One drive can store up to 100 kWh of energy and provide power up to 300 kW. A system of such flywheels can equalize the daily heterogeneity of the electrical load of a whole region. So you can completely abandon the very expensive pumped storage power plants.
It is possible to use super-flywheels onfacilities where independence from electrical networks and backup power are needed. These systems have a very high response speed. It is literally fractions of a second and allows you to provide a truly uninterrupted power supply.
Another place to useSupermahovik, is a railway transport. A lot of energy is spent on braking compositions and, if you do not waste it, heating the braking mechanisms, and untwist the flywheel, then the stored energy can then be spent on gaining speed. You will say that the suspension system will be very fragile for transport and you will be right, but in this case we can also talk about bearings, since there is simply no need to store energy for a long time and the losses from the bearings will not be so large for such a period of time. But this method allows you to save 30 percent of the energy consumed by the train for movement.
As you can see, super-flywheel systems have verymany pluses and very few minuses. From this we can conclude that they will gain popularity, become cheaper and more massive. This is the case when the properties of matter and the laws of physics, familiar to people from ancient times, allow you to come up with something new. As a result, you got an amazing symbiosis of mechanics and electricians, whose potential has not yet been fully revealed.