- Patentinformation on request
RES VAWT Polygon 1
#resvawtpolygon1 VAWT without building permission: https://lnkd.in/gyj8QgJj
PCT application published with examiners report: https://lnkd.in/et9qwc6S
Patent granted in Germany already : https://lnkd.in/gFesNkZY
Advancements in VAWT Technology, published in: https://lnkd.in/eS-hxNBR
This wind turbine has a rotor with a diameter of 5 metres and a total height of 8 metres, and it weighs only 1,594 kilograms. It delivers 24 kilowatts at a wind speed of 12 metres per second. These figures are for a steel construction; further reductions in weight could be achieved by using composite materials.
#resvawtpolygon1 #resewing #resblade #reswindpower #resactuator #windturbines #enerytransition #energyabundance #not4everybody
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RES VAWT Polygon 2
#resvawtpolygon2 HAWT and VAWT Comparison: https://lnkd.in/eSZKwB5T
The video makes a deliberate comparison between two designs of 2 MW wind turbine. As can be seen on the right of the video, the HAWT E70 has a swept area of 3,959 m² and a rotor diameter of 71 m. It converts the kinetic energy of the wind at a speed of 12 m/s into a rated power of 2,300 kW using a synchronously excited ring generator. The upwind rotor is equipped with active blade adjustment and is designed for wind zone WZIII, with a hub height ranging from 57 to 113 metres. The elegant appearance of the three-bladed upwind turbine is due to the fact that approximately 90 per cent of the E70's structural mass is concealed underground in the form of a 1,400-tonne foundation, while the visible part of the structure weighs only 156 tonnes. As shown on the left, the VAWT 'Res-triangle', which is part of a series of designs called 'Res-hyperbolic', has a total weight of just 824 tonnes. The tapered rotor reaches a height of 110 metres and has a swept area of 4,050 square metres, with a maximum diameter of 50 metres at the top. This results in a rated output of 2.5 megawatts at a wind speed of 12 metres per second. At a wind speed of 15 metres per second, the E70 must be throttled using active single-blade adjustment; meanwhile, the three permanently adjusted rotor blades of the VAWT generate an output of 4.8 megawatts. Using variable asymmetrical airfoils is essential as they generate up to 30 per cent more lift than the symmetrical airfoils of a conventional Darrieus rotor. The load-bearing middle section of the rotor blade is designed like the belt of a twisted, three-chord lattice beam. At wind speeds exceeding 12 m/s, the centrifugal forces acting on the middle section of the asymmetrically profiled rotor blades exceed their lift capacity. However, these forces can offset each other in the windward half of the orbit while adding up in the leeward half. The alternative design is characterised by a significantly lower centre of gravity, a feature that is further compounded by the generator's position at the base. This configuration enables the construction of a foundation that is half the weight while delivering a multitude of other advantages, including substantial cost and resource savings.
#resvawtpolygon2 #resblade #resewing #reswindpower #restriangle #resactuator #windenergy #windturbines
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RES VAWT Polygon 3
#resvawtpolygon3 Introducing Res Quadrangle: https://lnkd.in/eD-zpGtv
Advancements in VAWT Technology published in: https://lnkd.in/eS-hxNBR
PCT application published with examiners report : https://lnkd.in/et9qwc6S
Patent granted in Germany already : https://lnkd.in/eVcSpURp
Research at the RES Institute shows that vertical-axis wind turbines have a range of clear advantages over conventional horizontal-axis turbines. First and foremost is efficiency, which is at least on a par with current technology and can be significantly better thanks to spatial energy extraction from the flow tube. With the same blade length, they have a much smaller footprint and are characterised by significantly lower noise emissions during operation. Birds have spatial perception and can therefore perceive a turbine with a vertical axis of rotation much better than a rotor that rotates in a plane. Three-part rotor blades have been developed at the RES Institute for the construction of large VAWT systems in the power range above 40 MW. In these blades, the middle segment is designed as a supporting element of a lightweight rotor structure. Turning the leading and trailing edge segments of the rotor blade in opposite directions causes the suction side of the asymmetrical blade profile on the windward side of the orbit to face the axis of rotation, while the suction side of the blade profile faces outwards in the leeward orbit. As the leading and trailing edge segments are different lengths, adjusting the blade results in a positive angle of attack for the asymmetrical blade profile on the windward and leeward sides of the orbit. When aligned vertically to the respective wind direction, the suction side of the blade profile changes from the inside to the outside of the circular orbit. In this temporary vane position, the rotor blade has a symmetrical blade profile. The blade is adjusted by actuators driven electrically, pneumatically, or hydraulically, for which the middle blade segment acts as a bearing. The kinematics of the rotor blade are comparable to those of a sailing boat that has to make two turns on a circuit in order to make optimum use of the wind's power.
#resvawtpolygon3 #resblade #resewing #resgigatube #reswindpower #resactuator #windenergy #offshorewind #windturbines
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RES VAWT Polygon 4
#resvawtpolygon4 Tuscan Spinning with Res Quadrangle: https://lnkd.in/ejXP5Q9z
PCT application published with examiner's report: https://lnkd.in/et9qwc6S
Patent granted in Germany: https://lnkd.in/eVcSpURp
Spectrum Conferences #ISASET2024, Florence, 18 March: As co-chair of the Summit on Applied Science, Engineering and Technology, I am pleased to present other designs for VAWTs beyond 40 MW. When it comes to converting wind energy, sailing is much more efficient than riding a merry-go-round! The rotor of the giant VAWT pictured on the Tuscan coast has a diameter of 230 metres and stands 600 metres high, covering an inflow area of around 138,000 square metres. At wind speeds of 10 m/s, the rotor delivers 50 MW; at 12 m/s, 85 MW; and at 15 m/s — when conventional technology requires stall control — the rotor can deliver up to 165 MW and beyond. The steel rotor weighs only 12,580 tonnes in total, while the entire structure, including the tower base, weighs around 30,000 tonnes. This gives a power-to-weight ratio that is more than twice as good as that of a conventional 4 MW wind turbine. In addition to effectively reducing construction costs through a modular building system that is easy to assemble, disassemble and recycle, the lightweight steel construction dramatically reduces electricity production costs. This is critical to the transition from fossil fuel-based to green energy production.
#resvawtpolygon4 #resquadrangle #resewing #resblade #reswindpower #resgigatube
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RES VAWT Polygon 5
#resvawtpolygon5 Introducing the Queen of the Baltic: https://lnkd.in/daF7kDaS
In terms of converting wind energy, sailing is a more effective method than the conventional approach. Consider a wind turbine with an inflow area of around 151,000 square metres. When operating at wind speeds of 15 metres per second, it can deliver up to 155 MW. Furthermore, it continues to generate additional energy at wind speeds exceeding 15 metres per second, even after the conventional technique has reached its maximum capacity. This innovative wind turbine design is a tangible reality. Reducing the weight would also significantly decrease the cost of electricity generation. The turbine is made from lightweight steel that can be quickly assembled, taken apart and recycled. The following section will present a number of the advantages of this design. Instead of a mast, a highly rigid, substantial cylinder constructed as an airy lattice shell structure is used to accommodate the entire bending moment. The cylinder incorporates circumferential sub-spanned compression rings in its transverse stiffeners, enabling it to act as a giant bamboo tube structure with high stiffness in bending, shear and torsion. The central segment of the three-part rotor blade comprises a vertical tower that houses an elevator shaft and a staircase. This provides access to the electrical actuators of the swivable, non-load-bearing leading and trailing edge segments of the rotor blade throughout the entire length of each of the five towers. The five towers are connected by eight circular ring beams in a regular pattern of spacing. These beams, in conjunction with vertical cross bracing, constitute the open grid shell structure of the giant rotor. The suction side of the rotor blade is always perpendicular to the wind direction, with the suction side of the asymmetric wing profile oriented leeward. This is achieved using vertically spaced actuators that align with turning points perpendicular to the wind direction. Altering the suction side of the rotor blades is time-consuming, but highly beneficial in reducing stress peaks caused by sudden changes in load. These peaks represent a significant drawback of a conventional Darrieus rotor, resulting in poor performance. The abundance of kinetic energy in our gaseous atmosphere provides a rich source of potential for growth through the utilisation of regenerative energy. The entire wind energy industry is poised for a transformative leap forward.
#resvawtpolygon5 #respentagon #resblade #resewing #reswindpower
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