This Wind Turbine makes Wind Power virtually LIMITLESS - Solves Wind Energy's BIGGEST Problem!

wind power as we all know is a clean and renewable energy source wind turbines harness energy from the wind using mechanical Power to spin a generator and create electricity not only is wind an abundant and inexhaustible resource but it also provides electricity without burning any fuel or polluting the air we are all aware of the wind energy contribution and Renewables across the world we are also aware of the type of wind turbine which is frequently talked about and stalled other wind sites the horizontal axis wind turbines but what many of us are not aware of is that there's another special type of wind turbine taking shape in the far north of the world that is a potential candidate to disrupt the renewable contribution from when hi I'm Abhishek and you are watching revolutionary engineering [Music] before talking about that in detail it will be good to First understand the precursor of that ambitious innovation a vertical axis wind turbine as against horizontal ones it is a type of wind turbine where the main rotor shaft is set transfers to the white wind while the main components are located at the base of the turbine this Arrangement has three main advantages firstly it allows the generator and gearbox to be located close to the ground facilitating service and repair and secondly since the major portion of the weight is at the base the entire structure is well balanced but if we talk about the biggest Advantage it is that the vertical accessible turbines do not need to be pointed into the wind which removes the need for wind sensing and orientation mechanisms broadly the vertical access wind turbines are classified into two types first is the lift type which utilizes the lift aerodynamic Force to rotate by flowing around the structure the wind creates a suction on the front side of the turbine driving the wings to rotate the resultant airflow shown in Red Arrow forms a positive angle of attack to the wing generating lift and causing the wings to rotate because of the shape of the Wings they do not experience as much drag as savonias or drag type wind turbines once the rotation starts Darius wind turbines are able to accelerate to rotate faster than the wind speed the second type of vertical axis wind turbine is the drag type that relies on the flow resistance mechanism to turn their rotors in simple words the dynamic pressure of the wind against the blades pushes the rotor into rotation at the same time the opposite side of the blades encounters a force of air Dynamic resistance or drag as the vertical axis blades goes around it moves more or less gets Stark on 300 degrees of 360 degree rotation there's a very small Zone where it doesn't contribute to torque as against a general understanding that in vertical axis when turbines blades go with the Wind on one side but Against the Wind on the other side and therefore they have difficulty in turning computer modeling suggests that Wind forms constructed using vertical access wind turbines are 15 more efficient than conventional horizontal axis wind turbines as they generate less turbulence mind that the efficiency of vertical axis wind turbine is less than that of horizontal ones when we compare them on a one-to-one basis if you plot a graph between efficiency or power coefficient was the step speed ratio lift type vertical access wind turbines such as Jarius achieves the efficiency Mark of 40 at tip speed ratio between 4 and 5 compared to 50 for conventional three blade horizontal ones with a tip speed ratio close to 7. depth speed ratio is the ratio between the wind blade speed at its step and the speed of the wind since the vertical axis wind turbines leave considerably less of a turbulent wig behind them more of such turbines can be placed closer to each other increasing the output from the given area but there's yet another approach while comparing the efficiencies that is not the swept area of the blades but the height and width of the area swap by vertical access winter binds to be the same as that of diameter of circles swept by horizontal ones and when we do this we get a totally different picture here is how the swept area for a vertical axis 1 turbine is a rectangle and for horizontal it's a circle when we draw a square with the height and width same as diameter of a circle you can notice that the square has a larger area and therefore the capture efficiency for vertical axis wind turbine which is nothing but a measure of how much of the kinetic energy flowing through this cross section that you can capture can at least approach near to that of horizontal axis wind turbines if not become equal taking this idea along with novel additions a disruptive innovation has come up from Norway in the wind turbine sector called a control rotating vertical turbine it could radically improve yield and reduce levelized cost of energy for floating offshore wind projects according to the worldwide wind which is the startup behind this idea in simple terms levelized cost of energy measures lifetime costs divided by energy production so if an energy system is deployed with initial cost of hundred dollars and annual expenses of 25 the annual cost per year is 125 dollars and if the annual energy production is 1000 kilowatt hour level as cost of energy is 0.125 dollars per kilowatt hour Norway's worldwide band has a radically different take on offshore wind power these floating wind turbines features two sets of blades turned to counter rotate or counter rotate and the best part is the promise to more than double the output of today's biggest turbines its two vertical axis wind turbines and one tuned to rotate in opposite directions taking wind farms deeper into the offshore can open up a lot more opportunities but as the ocean gets deeper can we opt for horizontal axis wind turbines well we can but the conventional horizontal axis wind turbines start to make less sense here's why horizontal axis wind turbines need to hold a lot of heavy components including drivetrains gearboxes generators and their colossal blades right up the top of a long pole so mounting them on platforms brings in challenges in two ways number one building floating platforms that resist stripping over even though possible is a huge challenge sorting off your structure that works in deep Waters that are deeper than 50 meters makes the heavy top turbines prone to being buffeted by winds even if the buoyant support system is attached to moving lines anchored to the sea floor and second far away from the shore at a water depth of more than 50 meters a fixed bottom turbine becomes very expensive and challenging project not to mention maintaining the working end of a turbine so far above the ground as against horizontal axis wind turbines vertical ones have blades that reach upwards but all the heavy components are at the bottom so the natural tendency is to sit upright also they can accept wind energy from any direction rather than needing to turn face into the wind cutting down on some more heavy gear you would find up high on horizontal axis wind turbines as already pointed out while comparing on a one-to-one basis they are typically less efficient than regular three-blade horizontal turbines but by placing them closer together we could potentially get more energy out of a given patch of ocean worldwide one has proposed an entirely new type of floating vertical axis wind turbine specifically designed for offshore deployment and massive scalability indeed its two vertical access wind turbines in one the lower one is fixed to the outer casing of the turbo and set to rotate one way and the upper one is mounted to a shaft running right up the middle of the Tower and it's set to rotate the other way under the surface one turbine is fixed to the rotor and the other to the starter doubling the relative speeds of rotation as compared to a static Strutter and generating electricity the claim to more than double the output of largest horizontal axis wind turbines placement of all the heaviest components at the bottom vastly reduced enduring stresses and material causes but the whole thing isn't designed to sit perfectly upright these enormous Star Wars will tilt with the Wind and their horizontal axis wind turbines need to be anchored right to the sea floor or mounted on extremely heavy platforms so they won't tip over worldwide wind can simply put a float pathway up its pole held in plate by tethers and let its own weight balance hold the turbines up allowing the whole structure to clip With the Wind rather than fighting to stay upright a lower center of gravity makes the design much more stable as compared to the conventional horizontal axis wind turbines to give you an idea about how it happens you may recall a hit me toy that was quite popular in the 90s whenever you hit it counter-intuitively stunts back this happens because of a lower center of gravity causes the gravitational force to produce a moment about the imaginary axis passing through the point of support such that it brings the toy back to its equilibrium position though the actual Dynamics on the floating turbine with heavy base is more complex involving many other factors such as Center of buoyancy void Force this gives you an idea about how a load center of gravity leads to better stability the blades of worldwide when vertical access wind turbine sweeps a cone which helps to reduce the turbulent wake Downstream of each floating tower Vic is a long trail of wind which is quite turbulent and slowed down when compared to the wind arriving in front of the turbine reduced turbulent weight translates to increased Tower density or the number of towers on a given patch of ocean which is also a typical advantage of vertical axis wind turbines and since vertical axis wind turbines are well known to leave considerably less of a turbulent wake behind them than the horizontal counterparts they are perfectly suited for deep waters for offshore the ability to tilt will also help them to resist sudden violent wind gusts and damaging vibrations this design according to the company fundamentally removes the engineering restrictions that are preventing offshore wind turbines from growing larger to reap the benefits that come with scale now coming to the most important aspect the power output that is expected from this design which will look at the world's largest wind turbine as its stand the mammoth Ming Yang's Smart Energy 16242 stunning 264 meters tall falling slightly shorter than the Eiffel tower has a rated capacity of 16 megawatt worldwide band has quite ambitious plans to grow up to 400 meters in height dwarfing the world's largest with the mind-boggling 40 megawatt capacity per unit such a high power output combined with a high tower density compared to traditional turbines according to the company adds up a levelized cost of energy of less than 50 dollars per megawatt hour Which is less than half of what cutting-edge horizontal access Winter by installations are expected to deliver by 2027. floating wind turbine currently has a level as cost of around 120 to 130 Euros per megawatt hour if we see the current state the company is working to accelerate development of Contra rotating vertical wind turbine through rapid prototyping the targets are to have a 3 megawatt Model running up by 2026 and the full scale 40 megawatt machine as soon as 2029. the first prototype that the company is developing is just 2 meters high and 400 watt just to get some first initial experience on a counter rotating generator such a design will also have less of an environmental impact than the conventional ones it's less of a threat to birds and doesn't produce the same level of noise due to lower blade tip speeds another interesting part of this turbine lies in the generator most horizontal axis wind turbines use neodymium magnets and neodymium mining is not environmentally friendly as we all know for right on the other hand which is a byproduct of steel production is significantly cheaper than neodymium but it weighs more a ferrite is used in the rotor of generator of horizontal axis wind turbine it would not make much sense due to the location of the generator which is on top of the turbine but when you have it down at the needle it acts as a blessing as more weight on the bottom side is what is designed in vertical axis wind turbines with all the advantages of this turbine there are points of concern as well longevity varies more since all vertical axis wind turbine blades are subjected to strong forces from every angle as the spin and second replacing the gigantic bearings that would be needed to support and spend a 400 meter long shaft inside a counter rotating 400 meter long tube might be a big big challenge with the mass filtered off-center most of the time for decades and that too in sea water giant 40 megawatt coaxial Towers weigh out at Sea undercutting the level as cost of energy of today's offshore wind could have significant and impactful contribution in the efforts through decarbonization all that is needed are tangible results hope you enjoyed this video thanks for watching

Channel: Revolutionary Engineering

Views: 118,981

Keywords: wind energy, This breakthrough wind turbine has a secret, revolutionary engineering, world wide wind, contra rotating wind turbine, tilted wind turbine, breakthrough offshore wind turbine, wind energy breakthrough, wind turbine breakthrough, wind power breakthrough design, offshore wind power breakthrough, revolutionary wind energy breakthrough, breakthrough wind turbine design, breakthrough wind power design, wind turbine design breakthrough, offshore wind energy breakthrough

Id: nuypcMMXU6Y

Length: 12min 42sec (762 seconds)

Published: Fri Oct 07 2022