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US20130170986A1 - Windtracker twin-turbine system - Google Patents

Windtracker twin-turbine system Download PDF

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Publication number
US20130170986A1
US20130170986A1 US13/822,318 US201113822318A US2013170986A1 US 20130170986 A1 US20130170986 A1 US 20130170986A1 US 201113822318 A US201113822318 A US 201113822318A US 2013170986 A1 US2013170986 A1 US 2013170986A1
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US
United States
Prior art keywords
turbine
wind
turbine system
shaft
turbines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/822,318
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English (en)
Inventor
Dennis Patrick Steel
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Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from DE202011101729U external-priority patent/DE202011101729U1/de
Application filed by Individual filed Critical Individual
Publication of US20130170986A1 publication Critical patent/US20130170986A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/02—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having a plurality of rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/22—Wind motors characterised by the driven apparatus the apparatus producing heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/30—Wind motors specially adapted for installation in particular locations
    • F03D9/34—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/213—Rotors for wind turbines with vertical axis of the Savonius type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/40—Use of a multiplicity of similar components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the invention relates to a turbine system in accordance with the preamble of claim 1 .
  • Savonius turbines are known (see also FIG. 6 ). These rotors may consist of two horizontal circular disks which are attached to a vertical rotor shaft and between which two semi-circular curved blades are attached in a vertical position.
  • a radial turbine By comparison with the known three-blade wind generators having a horizontal axis of rotation and aircraft-type blades, a radial turbine has the major advantage of operating independently of the direction of the incident wind. Thus, the radial turbine having a vertical axis of rotation does not have to be turned to the wind.
  • the radial turbine is provided with deflector plates that collect the wind energy and deflect it onto the blades of the radial turbine in a concentrated form.
  • this has the drawback that, because of the deflector plate, independence from the wind direction is no longer achieved.
  • the radial turbine comprising a deflector plate therefore has to be tracked to the wind.
  • the Savonius turbine is equipped with deflector plates, it gains at low wind speeds, but loses all the more at higher wind speeds.
  • Object of the invention much better use is to be made of the wind energy, with a much higher efficiency than in conventional Savonius turbines. It should still be possible to use the wind turbine even when the wind would be too weak to drive conventional Savonius turbines.
  • the wind turbines should operate with no noise and very little vibration, in such a way that they can even be used on residential buildings in urban areas.
  • a radial turbine is also to be used which comprises a deflector plate and which automatically turns to an optimum angular position with respect to the incident wind, and is thus self-tracking, without a tracking arrangement being necessary for this purpose.
  • the advantages of the deflector plate in the radial turbine are thus to be combined with the independence of the radial turbine from the incident wind direction.
  • the wind turbine according to the invention does not have an unbalance of the type described above, even in a particularly advantageous embodiment where three turbine blades are provided.
  • the Magnus effect is a phenomenon in fluid mechanics, specifically the transverse force effect (force) experienced by a round rotating body (cylinder or ball) in a flow.
  • a rotating roller induces rotation in the fluid surrounding it. If there is additionally a flow over the roller, the different speeds of fluid overlap. As a result, the fluid flows around the rotating roller faster on one side than on the other (in the rest system of the roller). On the side of the roller where the frictional effects are greater, it is as if the fluid were flowing more rapidly. This results in “deflection” of the roller, pushing the roller downwards (see FIG. 10 ).
  • high performance is achieved in combination with low installation costs, in such a way that the cost-effectiveness, in terms of power output, is much greater than in the known wind generators comprising a horizontal shaft and blades of the aircraft-wing type.
  • a ring generator is provided for power generation.
  • the mast and the wind splitter can be used as advertising space.
  • the two turbines do not obstruct one another, but can instead boost one another, even at low wind speeds, assisted by the low-frequency pressure oscillation taking place in the rear cavity of the V-shaped wind splitter.
  • the radial turbine according to the invention can be operated even at relatively low wind speeds.
  • the radial turbine according to the invention “pulls” the wind in, as it were, and amplifies low wind speeds.
  • the radial turbine according to the invention can also be used in circulating winds, in which the wind speed is greater below at a low height than at the large height at which the three-blade wind generators have to be operated simply because of the blade size.
  • a wind speed which is too low for the known three-blade turbines in any case is sufficient for energy production with the radial turbine according to the invention.
  • the radial turbine according to the invention adjusts itself automatically, partly as a result of the Magnus effect, and immediately rotates to the optimum direction, even at wind speeds of less than 1 m/s. Rapid adaptations of this type of the generator are not possible with the known three-blade turbines.
  • the radial turbine according to the invention since the radial turbine according to the invention only takes up a small amount of space, it can be used as an add-on to pre-existing parts of buildings or structural elements, for example as an attachment to a street light.
  • FIG. 1 is a schematic cross-section through the wind turbine according to the invention in accordance with a particularly preferred embodiment
  • FIG. 2 is a graphical representation of the free-running rotational speeds, plotted against the wind speed, for the wind turbine according to the invention (upper curve and crosses) and for a conventional Savonius wind turbine (lower curve and circles),
  • FIGS. 3 to 5 are graphical representations of the rotational speeds of the wind turbine according to the invention and a conventional Savonius wind turbine together with the incoming flow angle of the wind and the wind speed, plotted against time,
  • FIG. 6 is a schematic cross-sectional drawing of a conventional Savonius wind turbine, showing the mode of operation thereof,
  • FIG. 7 is a perspective drawing of the wind generator according to the invention comprising two radial turbines,
  • FIG. 8 shows the constructional details of an embodiment as a tubular mast mounting system in a view from the side in accordance with A-A in FIG. 9 ,
  • FIG. 9 is a plan view of the wind generator
  • FIG. 10 shows a rotating roller with surrounding fluid
  • FIG. 11 shows the thread test
  • FIGS. 12 to 14 show further variants with modified wind splitters 29 and additional concentration plates 30 .
  • FIG. 15 shows torque vs. rotational speed characteristics
  • FIG. 16 shows further characteristics
  • FIGS. 17 to 26 are various perspective views of a wind generator according to the invention which has been improved further.
  • FIG. 27 a shows a grid mast construction that is and/or can be used for the special accumulator and turbine mounting system
  • FIG. 27 b is the section A-A
  • FIG. 28 shows “support hearts” that are fixed to a rotary part on the shaft.
  • the significance of the remaining reference numerals in FIG. 1 can be seen from Tables 1 and 2 below that also specify the ranges of values according to the invention for the parameters and the particularly preferred values of the parameters in the two embodiments.
  • a grid mast construction is provided above the rotary connection, and is used and can be used as a frame for the special accumulator mounting system and turbine system.
  • a safety space which is protected and grounded by the outer shell of the mast, preferably a thick-walled steel tube, and may contain various sensitive technological components, is located below the rotary connection, without any additional costs.
  • the use according to the invention of the turbine system makes it possible to create safety spaces, and to use wind generators in the pre-existing infrastructure (streets, rails etc.), in areas where construction would otherwise be impossible.
  • FIG. 2 shows the measurement results for the free-running rotational speed of the wind turbine according to the invention and of a Savonius wind turbine.
  • the rotational speeds in revolutions per minute are plotted against the wind speed in m/s.
  • the upper curve is a line of best fit for the rotational speed values of the wind turbine according to the invention that are plotted using crosses.
  • the measurement values for the conventional Savonius wind turbines are shown as circles.
  • the lower curve is a line of best fit.
  • R1 Radius of the turbine as desired 0.125 m
  • FIGS. 3 to 5 A series of measurement results for the properties of the wind turbine according to the invention and for a conventional Savonius wind turbine, which were both exposed to the same wind conditions, is shown graphically in FIGS. 3 to 5 .
  • the upper curve 110 represents the respective angle of incidence of the wind in the range from +80° to ⁇ 80°.
  • the curve 111 shows the wind speed, in this diagram in a range of 0 to 6.5 m/s.
  • the curve 112 shows the rotational speed of the wind turbine according to the invention in a range of 0 to 500 revolutions per minute.
  • the curve 113 shows the corresponding rotational speeds for a conventional Savonius wind turbine. Since the Savonius wind turbine is often stationary at these wind speeds, the curve 113 is always close to or even on the zero line.
  • FIG. 6 is a schematic drawing of a Savonius wind wheel, shown by way of prior art. The flow direction of the air and the direction of rotation are shown.
  • the inventive solution disclosed herein relates primarily to VAWTs, although horizontal mounting with an incident wind flow transverse to the axial direction is also possible in special cases.
  • the Savonius rotor cannot run faster as a result of a deflector plate or deflector surface. However, this can be demonstrated with the invention.
  • the variations relate to the number and the special shape of the rotor blades, the attachment of wind guide elements, and in some cases a screw-shaped configuration for achieving a more constant speed during rotation.
  • the solution according to the invention thus relates to particular, relatively precisely determined shapes and arrangements which have been found to be particularly efficient in the development process.
  • the further embodiment of the wind turbine according to the invention also corresponds to FIG. 1 ; and wind flows onto it in a primary wind direction 101 and subsidiary wind directions 102 , 103 .
  • the significance of the remaining reference numerals in FIG. 1 can be seen from Table 2 above that also specifies supplementary or expanded ranges of values according to the invention for the parameters and the particularly preferred values of the parameters in the second embodiment.
  • the height (or length) of the turbine may be in a wide range of ratios to the radius. That is to say, depending on the place of use, the height or length of the turbine is approximately 0.3 to 100 times the turbine radius, it also being possible, for reasons of construction or stability, to understand a long or high turbine as a positive coupling of a plurality of turbines to a shaft which may optionally be connected by means of positive couplings.
  • the purpose of the turbine system is to obtain energy from wind in an optimum manner, priority being given to obtaining electrical energy.
  • a generator is mechanically connected to the turbine shaft positively or non-positively, directly or indirectly via a transmission, in a manner adapted to the turbine system, said turbine shaft being positively or non-positively connected to the turbines so as to ensure force transmission from the turbine to the generator.
  • one generator may be used for both turbines, or each turbine may be connected individually to one respective generator.
  • R1 Radius of the turbine as desired 0.510 m
  • the generator is controlled in a manner adapted to the wind speed, in such a way that by regulating the generated power an electromagnetic braking torque is transmitted to the turbine, so as to set an optimum tip speed ratio (TSR) for energy conversion that is between 45% and 65% of the tip speed ratio of the unbraked turbine. This ensures that the maximum possible energy can always be “harvested”.
  • TSR tip speed ratio
  • a height:radius ratio of approximately 20 is set, the turbines on a shaft being mounted individually approximately every 5 m, and being interconnected via a flexible positive coupling and connected to the end of a shaft directly or indirectly via a transmission comprising a current generator.
  • two turbine deflector plate systems may advantageously be brought together with reflective symmetry as a wind splitter system, in such a way that for example with a vertical axis of rotation, the left deflector plate deflects the wind to the left turbine and the right deflector plate deflects the wind to the right turbine as seen in the primary wind direction.
  • the deflector plates may advantageously be in the form of a “nose” with a rounded “bridge” as a connection between the two deflector plates, so as to form a closed wind guide system, the wind splitter.
  • FIG. 7 is a perspective drawing of the wind generator according to the invention, comprising two radial turbines 1 , 2 and a V-shaped wind splitter 3 , the radial turbines and wind splitter being attached to a steel mast 5 or another base part 6 so as to be rotatable (pivotable) as a whole about a vertical axis.
  • the distance between the V-shaped wind splitter and the turbines is variable and adjustable, so as to achieve optimum operating conditions for all wind conditions.
  • the V-shaped wind splitter As a function of the wind speed, the V-shaped wind splitter is brought into the optimum position, based on the distance and inclination with respect to the turbine blades and the turbine shaft.
  • the height of the turbines is 10 m.
  • the turbines have a diameter of 1 m.
  • the expected capacity for a site on the coast, where the wind generator captures the circulating coastal wind, is approximately 21,700 kWh, with an efficiency averaged over the year of 38%.
  • FIG. 8 shows the constructional details of an embodiment as a tubular mast mounting system in a view from the side corresponding to A-A in FIG. 9 .
  • Three support plates 7 , 8 , 9 are attached to the 20 m high steel mast 5 by means of bearings 10 , 11 , 12 , 13 , 14 so as to be rotatable about the longitudinal axis 15 of the steel mast 5 .
  • the lower support plate 7 has three rotary bearings 10 on the steel mast 5 and two turbine bearings 16 , 17 on the turbine shaft 18 .
  • the central turbine plate 8 has three rotary bearings 12 and two turbine bearings 19 , 20
  • the upper support plate 9 has three rotary bearings 14 and two turbine bearings 21 , 22 .
  • the turbine bearings 17 , 20 and 22 are not shown in FIG. 8 , and are associated with the other turbine.
  • the rotary bearings 10 , 11 on the one hand and 13 , 14 on the other hand are kept at a distance by a spacer collar 23 , 24 .
  • the spacer collar is in the form of a hollow tube.
  • FIG. 9 is a plan view of the wind generator.
  • the turbine blades 25 can be seen.
  • FIG. 11 What is known as a thread test was carried out on the system according to the invention ( FIG. 11 ). Wind 28 at up to 6 m/s was blowing into the system. The ratio of the circumferential speed of the turbine to the wind was up to 3:1. The point where the thread direction breaks away can be seen clearly in FIG. 11 (at the bottom of the picture).
  • the system according to the invention can extract energy from the pressure difference or the potential energy of the wind, not just from the kinetic energy of the moving air.
  • a side effect is the ping-pong ball which is “suspended” in an oblique airstream.
  • the flow of the airstream is not stripped away from the ball, but encircles it (almost) completely without being stripped away. Since the ball is suspended slightly below the center of the airstream, the air does not flow around it symmetrically. More air is deflected downwards, since the flow speed and flow cross-section are lower at the underside of the ball than at the upper side. As a result, the ball experiences an upward force. This is superposed on the Magnus effect (the ball rotating). The two effects each prevent the ball from falling downwards and only allow it to “slip” along the underside of the airstream. The resistance of the ball to the flow holds it at a distance from the nozzle, and gravity prevents it from simply being blown away. Thus, the ball can float in a more or less stable position.
  • FIGS. 12 to 14 show further variants with modified wind splitters 29 and additional concentration plates 30 .
  • the measurement values were checked for plausibility and evaluated using various averaging and filtering methods.
  • FIGS. 15 and 16 are graphical representations with corresponding interpolated lines.
  • FIG. 15 torque vs. rotational speed characteristics, interpolation with average power coefficient (PC) 35%
  • FIG. 16 Characteristics
  • the turbine system according to the invention can also advantageously be used in water for obtaining energy from the flow of water, that is to say as a marine turbine system.
  • FIGS. 17 to 26 are various perspective views of a wind generator according to the invention which has been improved further. Operation in practice has demonstrated that the wind generator operates with virtually no noise and very little vibration. Any compression oscillations are in the inaudible range below 20 Hz. The light and well-balanced construction of the rotating parts is responsible the observed lack of vibration. As a result, this wind generator is outstanding for use in urban areas and/or on buildings.
  • a grid mast construction which is and/or can be used as a frame for the special accumulator and turbine mounting system, is provided above the rotary connection that is fixed to a stationary mast (cf. FIG. 27 a and section A-A in the form of FIG. 27 b ).
  • the cavity inside the grid mast provides enough space for safely installing/fastening accumulators and for load control; at the same time, the cable lengths from the generator can be kept short so as to keep Ohmic losses low.
  • the lower region of the tower below the rotary connection is made from steel tubing, it forms a cavity which can be used for safely installing highly sensitive technology, since ventilation and/or heating and/or suitable air conditioning, particularly in relation to air humidity, can be provided.
  • the base part may be used in a configuration as a further energy store or as a water reservoir or oil store, and may be designed accordingly.
  • Heat pumps (with heat pipes) may be integrated into the base part.
  • the turbine blades are mounted on a plurality of milled support arms that in turn are fastened to a rotary part on the shaft on both sides by two “support hearts” which are screwed together. This reduces the weight and makes it possible for the turbine to reach full speed more quickly (cf. FIG. 28 ).
  • the support hearts make it possible to replace the turbine blades individually by screwing.
  • the very heavy fixed circular disks which are entrained in rotation and are conventional in the Savonius turbine, are replaced with stationary grille face panels that are additionally rounded for better wind introduction.
  • the weight of the rotating parts and the losses from the Thom effect are greatly reduced.
  • the wind energy can thus be harvested with a high level of efficiency.
  • the support hearts which are used according to the invention are much lighter.
  • the grille face panels are held together by a mast that is a functional replacement for the heavy frame construction conventional in the Savonius turbine.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)
  • Hydraulic Turbines (AREA)
US13/822,318 2010-09-21 2011-09-14 Windtracker twin-turbine system Abandoned US20130170986A1 (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
DE102010045915 2010-09-21
DE102010045915.1 2010-09-21
DE102010054365 2010-12-13
DE102010054365.9 2010-12-13
DE102011010176 2011-02-02
DE102011010176.4 2011-02-02
DE202011101729U DE202011101729U1 (de) 2010-12-13 2011-06-11 Turbinensystem für Wind- und Wasserkraft III
DE202011101729.3 2011-06-11
DE102011109215A DE102011109215A1 (de) 2010-09-21 2011-08-03 Zwillingsturbinensystem, das dem Wind/Wasser folgt (Windtracker), für Wind- und/oder Wasserkraft, mit optimierter Flügelform
DE102011109215.7 2011-08-03
PCT/EP2011/004601 WO2012038043A2 (de) 2010-09-21 2011-09-14 Zwillingsturbinensystem, das dem wind/wasser folgt (windtracker), für wind- und/oder wasserkraft, mit optimierter flügelform

Publications (1)

Publication Number Publication Date
US20130170986A1 true US20130170986A1 (en) 2013-07-04

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US13/822,318 Abandoned US20130170986A1 (en) 2010-09-21 2011-09-14 Windtracker twin-turbine system

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US (1) US20130170986A1 (de)
EP (1) EP2619449B1 (de)
JP (1) JP2013540934A (de)
KR (1) KR20130099974A (de)
CN (1) CN103221684B (de)
AU (1) AU2011304716B2 (de)
BR (1) BR112013008141A2 (de)
CA (1) CA2811794A1 (de)
DE (1) DE102011109215A1 (de)
EA (1) EA201390414A1 (de)
MX (1) MX338279B (de)
NZ (1) NZ609120A (de)
SG (1) SG188596A1 (de)
WO (1) WO2012038043A2 (de)
ZA (1) ZA201302355B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110215586A1 (en) * 2010-03-08 2011-09-08 Winston Grace Wind mitigation and wind power device
US20120161448A1 (en) * 2011-12-23 2012-06-28 Samit Ashok Khedekar Multiple wind turbine power generation system with dynamic orientation mechanism and airflow optimization
US9644603B1 (en) * 2014-01-08 2017-05-09 Amplified Wind Solutions, LLC Electric generating wind turbine system for low and high wind speeds
IT201600099565A1 (it) * 2016-10-05 2018-04-05 Enrico Rosetta Turbina eolica ad asse trasversale alla direzione del vento con involucro orientabile.
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