WO2013056322A1 - Éolienne à axe vertical - Google Patents

Éolienne à axe vertical Download PDF

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Publication number
WO2013056322A1
WO2013056322A1 PCT/BG2012/000028 BG2012000028W WO2013056322A1 WO 2013056322 A1 WO2013056322 A1 WO 2013056322A1 BG 2012000028 W BG2012000028 W BG 2012000028W WO 2013056322 A1 WO2013056322 A1 WO 2013056322A1
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WO
WIPO (PCT)
Prior art keywords
turbine
rings
tube
rib
tube rings
Prior art date
Application number
PCT/BG2012/000028
Other languages
English (en)
Inventor
Aleksandar Nikolov PIMPIREV
Original Assignee
Pimpirev Aleksandar Nikolov
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pimpirev Aleksandar Nikolov filed Critical Pimpirev Aleksandar Nikolov
Publication of WO2013056322A1 publication Critical patent/WO2013056322A1/fr

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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 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • 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
    • 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
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/25—Geometry three-dimensional helical
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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 concerns a vertical-axis wind turbine which can be used mainly for the generation of electricity for household needs of individual households and for industrial purposes, as component of wind power mills.
  • the vertical-axis wind turbine may also be used for driving various vehicles, but especially those that run on water.
  • a vertical-axis wind turbine which consists of a shaft rotating around longitudinal axis and multiple hard turbine blades mechanically fixed to the shaft.
  • Each one of the multitude of hard turbine blades represents an elongated solid with upper and lower end, where the upper and the lower ends are rotationally shifted one away from the other along the rotation axis so that each turbine blade has with helical shape and the cross section of the elongated solid of each turbine blade has aerodynamic surface.
  • the aerodynamic surface of each turbine blade is with arc-curved shape so that the centre line of the aerodynamic profile of the surface passes along the line of constant curvature with a specified terminal radius of curvature. (RU 2 006 105 624 A).
  • a disadvantage of the known vertical-axis wind turbines is first and foremost their complicated structure that prevents efficient use of wind energy.
  • the task of the invention is to create a structure of a vertical-axis wind turbine with simplified and process-oriented design allowing maximum use of the wind power.
  • This task is solved by a vertical-axis wind turbine comprising a shaft rotating around longitudinal axis and multiple hard turbine blades.
  • the turbine blades are combined into one or more turbine units, each consisting either of two identically sized bottom and top tube rings, or of one pair of bottom tube rings concentrically positioned one above the other and one pair of top tube rings concentrically positioned one above the other, so that the inner turbine rings and the outer ones are of the same size.
  • the tube rings are fixed perpendicularly to the single shaft by means of distribution washers and load-bearing radial ribs.
  • the length of the load-bearing radial ribs for each turbine unit is different and depends on the diameter of the corresponding turbine unit.
  • the top and the bottom tube rings are positioned in parallel to each other and at a certain distance above each other, so that this distance defines the height of the turbine unit. The height of all turbine units is the same.
  • the concentric bottom and top tube rings are connected to each other also with supporting ribs; through the load-bearing radial ribs and supporting ribs the tube rings are divided into equal sectors.
  • the sectors of the top tube rings are located right above those of the bottom tube rings.
  • each one of the turbine blades is attached with its one end to a load-bearing radial rib of the top tube ring and with its other end to the subsequent rib of the bottom tube ring.
  • each one of the turbine blades is attached with its one end to a load-bearing radial rib (or supporting rib) of the top pair of tube rings and with its other end to the subsequent rib of the bottom pair of tube rings.
  • the vertical-axis wind turbine may be elaborated with different number of turbine units with different number of turbine blades, but for the purposes of this invention the most appropriate are different variations of four turbine units, each with 6, 12, 18 or 24 turbine blades.
  • each of the turbine blades has a complex spatial form defined by an inner and an outer contours and by the corresponding ribs of the bottom and top tube rings to which the turbine blade is attached, and the ribs to which turbine blades are attached are located adjacent relative to the vertical axis of the wind turbine.
  • each turbine blade represents a spatial curve which begins from the corresponding rib of the bottom tube ring.
  • This spatial curve comprises a top and bottom part smoothly overflowing into one another.
  • the bottom part of the spatial curve starts at the outermost end of the corresponding rib of the bottom tube ring and is in the form of a semicircle with diameter equal to 0,05 R (m). This diameter is perpendicular to the bottom tube ring.
  • the top part of the outer contour is a helical curve.
  • the inner contour of the turbine blade lies in a plane forming an angle from 60° to 90° with the plane which is perpendicular to the bottom tube ring and passes through the supporting rib.
  • the inner contour also comprises a bottom and a top parts smoothly overflowing into one another.
  • the starting point of the bottom part rests on the corresponding rib, sits at a distance equal to (0.1 - 0.15) R (m) away from the wind turbine axis and starts with a sector of a circle with radius from 0.518 to 0.549 R (m).
  • R (m) radius from the wind turbine axis
  • the bottom part transforms into a straight line which is tangential to the so described circular sector.
  • This straight line ends into the respective rib of the top turbine round and has a length ranging from 0.371 to 0.865 R (m).
  • the turbine blades Given the function performed by the turbine blades, it is recommendable that they are made of a suitable plastic material, such as fibre glass plastic, polyethylene terephthalate or polycarbonate.
  • the vertical orientation of the turbine implies a simplified and reliable mechanics, regardless of the wind direction, reduced distances when positioning the turbines in windmill parks, minimized noise levels.
  • the design provides maximum wind-driven surface per unit of volume, as the internal turbulence of the air drives the flow from one blade to another and thus yields further self-acceleration of the rotation.
  • the design has as simplified as possible manufacturing technology ensuring low cost per unit of output.
  • the design of this vertical- axis wind turbine is easy to assemble/disassemble and easy to transport due to the reduced volume it occupies.
  • Figure 1 shows a supporting structure of vertical-axis wind turbine with single turbine unit.
  • Figure 2 Vertical-axis wind turbine with single six-blade turbine unit.
  • Figure 3 Supporting structure of vertical-axis wind turbine with two turbine units.
  • Figure 4 Vertical-axis wind turbine with two turbine units - one with six blades and another unit with twelve blades.
  • Figure 5 Schematic front view of the supporting structure of a vertical-axis wind turbine with four turbine units.
  • Figure 6 Schematic top view of the supporting structure of a vertical-axis wind turbine with four turbine units.
  • Figure 7 Front view of a turbine blade in operating state.
  • Figure 8 Schematic view of a turbine blade.
  • Figure 9 Vertical-axis wind turbine with three turbine units and attached electrical generator.
  • Figure 1 shows one alternative supporting structure design of a single-unit vertical-axis wind turbine with six blades attached to the turbine unit.
  • the turbine unit ( 1) of this vertical-axis wind turbine on Figure 1 consists of a shaft (2) rotating around a longitudinal axis; pre-bent and equally sized top (5) and bottom (6) tube rings are fixed to the shaft ( 1) by means of load- bearing radial ribs (3) with length R (m) and distribution washers (4).
  • the tube rings (5) and (6) are mounted perpendicularly to the axis of the shaft (2) at a specified distance from one another, which distance determines the height H (m) of the turbine unit ( 1).
  • the tube rings (5) and (6) are parallel to each other in a way that the radial ribs (3) (six per tube ring) are positioned exactly one above the other.
  • the radial ribs (3) divide the top (5) and bottom (6) tube rings into six identical sectors each.
  • Each of the turbine blades (7) is attached with its one end to a load-bearing radial rib of the top tube ring (5) and with its other end to the subsequent rib of the bottom tube ring (6).
  • each of the turbine blades (7) has a complex spatial form defined by an outer (8) and inner (9) contour and by the corresponding ribs of the bottom (6) and top (5) tube rings to which the turbine blade (7) is attached.
  • Figure 3 presents a supporting structure of an alternative version of a double-unit vertical-axis wind turbine.
  • the first turbine unit (1) has the same design as the previously described one and features two sets of six load-bearing radial arms (3), one for the top (5) and one for the bottom (6) tube rings.
  • the second turbine unit (10) comprises of two pairs of top tube rings concentric to one another and two bottom tube rings concentric to one another. These pairs of tube rings are set parallel to each other at a certain distance H (m) and perpendicularly to the shaft (2) of the vertical-axis wind turbine.
  • the top inner turbine round (6) with radius R is identical to the bottom tube ring of the first turbine unit ( 1).
  • the second outer tube ring (1 1) lies in the same plane as the top inner turbine round (6) and has radius of 2R (m).
  • the outer ( 1 1) and inner (6) top tube rings are fixed also by six supporting ribs ( 12) arranged between the load-bearing radial ribs (3) in such a way as to form twelve identical radial sectors.
  • the load-bearing radial ribs (3) are fixed, to the shaft (2) by means of the distribution washer (4) .
  • the two bottom concentric rings of the second turbine unit (10) - the inner (13) and the outer (14) rings - have respectively radii of R (m) and 2R (m), lie in one plane and are connected to the shaft (2) by means of the load-bearing radial ribs (3) and the distribution washer (4).
  • the load-bearing radial ribs (3) In between the load-bearing radial ribs (3) are positioned supporting arms (12) fixed to the two tube rings (13) and ( 14) in such a way as to from twelve identical radial sectors.
  • the mounting of the turbine blades (7) is identical to that described for the turbine blades (7) in a single turbine unit.
  • Each of the turbine blades (7) is secured with its one end to the outer part of a load-bearing radial rib (3) or to a supporting rib (12) located between the inner tube ring (6) and the outer tube ring (1 1) of the top pair of tube rings, and with its other end to the part of the subsequent load-bearing radial rib (3) or supporting rib (12) located between the inner (13) and outer (14) tube rings from the bottom pair of tube rings.
  • this design of vertical-axis wind turbine features two turbine units (1) and (10), of which the first one is equipped with six turbine blades (7) and the second one - with twelve turbine blades (7).
  • Such a vertical-axis wind turbine may be assembled with one or more turbine units and each turbine unit may also have different number of turbine blades. However, it is preferable that the number of turbine units does not exceed four, and the number of blades per turbine unit does not exceed twenty four.
  • the optional different number and type of turbine units, as well as their different positioning allows creating different layouts of wind turbines - with various turbine units each having different number of blades, and different positioning of the turbine units.
  • Table 1 presents the basic technical data of vertical-axis wind turbines with different combinations of the number and type of turbine units.
  • the letter “a” denotes a vertical-axis wind turbine with six blades, "b” - 12 blades, “c” - 18 blades, “d” - 24 blades; D (mm) designates the diameter and H (mm) - the height of the turbine.
  • the following figures present schematic front view ( Figure 5) and top view ( Figure 6) of the supporting structure of a four-unit vertical-axis wind turbine. The principle of design of the turbine units is the same as the above described for a two-unit turbine.
  • the uppermost turbine unit (1) has two sets of six radial ribs for each of its top and bottom tube rings and, respectively, six turbine blades; the subsequent turbine unit ( 10), viewed from top to bottom, has 12 ribs in total - with equal number of load-bearing radial ribs and supporting ribs on each of its tube rings and with 12 turbine blades.
  • the third turbine unit (15) from the top has 18 blades respectively and the last turbine unit (16) has 24 blades.
  • Figure 7 shows front view of a turbine blade (7) in operational state and Figure 8 provides a schematic view of a turbine blade (7).
  • Each one of the turbine blades (7) on Figure 8 in operational position has a complex spatial form defined by an outer (8) (AIB IC I) and an inner (9) (A2B2C2) contours and by the corresponding supporting ribs A1A3 of the bottom and C 1C3 of the top tube rings to which the turbine blade (7) is attached.
  • Al and C I are the outermost points respectively of the supporting ribs A1A3 and C 1C3, and
  • A3 and C3 are the innermost points of the supporting ribs A1A3 and C 1C3.
  • the supporting ribs A1A3 and C 1C3 are not located exactly one above the other, but are adjacent relative to the vertical, so that when C 1C3 stands to the left of A1A3 the turbine unit rotates counter clockwise, and vice versa - when C 1C3 stands to the right of A1A3 the turbine unit rotates in a clockwise direction.
  • the outer contour (8) (AIB IC I) of the turbine blade (7) represents a spatial curve which begins from the supporting rib A1A3 of the bottom tube ring.
  • This spatial curve comprises a bottom AlB l and a top B lC l part smoothly overflowing into one another.
  • the bottom part AlB l of the spatial curve starts at point Al of the bottom tube ring and is in the form of a semicircle with diameter equal to 0,05 R. This diameter is perpendicular to the bottom tube ring.
  • the top part of the outer contour which starts at point B 1 and ends at point CI, is a helical curve.
  • the inner contour (9) (A2B2C2) of the turbine blade (7) lies in a plane F forming an angle from 60° to 90° with the plane G which is perpendicular to the bottom tube ring and passes through the supporting rib A1A3.
  • the inner contour A2B2C2 comprises a bottom A2B2 and a top B2C2 parts smoothly overflowing into one another.
  • the starting point A2 of the bottom part A2B2 rests on the supporting rib A1A3, point A2 sits at a distance equal to (0.1 - 0.15) R (m) away from the wind turbine axis. From point A2 starts a sector of a circle with radius from 0.518 to 0.549 R (m). At the end of this sector, i.e.
  • the bottom part transforms into a straight line which is tangential to the so described circular sector.
  • This straight line ends at point C2 of the supporting rib C 1C3.
  • the length of the straight line B2C2 ranges from 0.371 to 0.865 R (m).
  • the turbine blades Given the function performed by the turbine blades, it is recommendable that they are made of a suitable plastic material, such as fibre glass plastic, polyethylene terephthalate or polycarbonate.
  • Figure 9 shows a vertical-axis wind turbine with three turbine units and an attached turbine-driven electrical generator ( 17).
  • the designed vertical-axis wind turbine is intended to convert the wind energy into a spinning motion of the rotating shaft of the electrical generators for direct and alternating current.
  • the airflow enters into the inside of the turbine through the open spaces formed between two adjacent outer lines forming the shape of the contour of the turbine blade (7).
  • this turbine starts rotating at wind velocity > 2 m/ s, ensuring the necessary torque depending on the chosen electrical generator whose power determines the necessary combination of turbine units.
  • One third of the turbine blades (7) of the turbine units for instance with area of 1.5 m 2 , arranged radially to the turbine's axis, take the direct hit of the wind front.
  • the remaining 2/3 of the turbine blades (7) that are not located into the core (active) zone only accelerate their rotational motion, transferring part of the airflow from one blade to another along their inner concave surface.
  • the outer streamlined surface of the turbine blades (7) minimizes the turbulence after the edge of each blade and in the zone of the active wind flow acts as a diffuser, so that the primary air flow slides down along the inner surface of each turbine blade and gets out through the triangular openings formed between two adjacent ribs of the bottom tube ring.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne une éolienne à axe vertical qui comprend un arbre (2) tournant autour d'un axe longitudinal et une pluralité d'aubes de turbine rigides (7) combinées en une ou plusieurs unités turbines (1). L'unité turbine (1) est constituée d'un anneau tubulaire inférieur (6) et d'un anneau tubulaire supérieur (6). L'autre unité turbine (10) est constituée de deux anneaux tubulaires inférieurs (13 et 14) positionnés de manière concentrique l'un au-dessus de l'autre et des deux anneaux tubulaires (6 et 11) positionnés de manière concentrique l'un au-dessus de l'autre. Les anneaux tubulaires (6, 11, 13 et 14) sont fixés perpendiculairement à l'arbre (2) par des rondelles de distribution (4) et des nervures radiales porteuses (3). Outre les nervures radiales porteuses (3), les paires concentriques d'anneaux tubulaires (6, 11, 13 et 14) sont également assemblées à l'aide de nervures de support (12). Chaque aube de turbine (7) est fixée par l'une de ses extrémités à une nervure radiale porteuse (3) ou à une nervure de support (12) de la paire supérieure d'anneaux tubulaires (6 et 11) et par son autre extrémité à la nervure suivante de la paire inférieure d'anneaux tubulaires (13 et 14).
PCT/BG2012/000028 2011-10-19 2012-10-16 Éolienne à axe vertical WO2013056322A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG10111062A BG111062A (en) 2011-10-19 2011-10-19 VERTICAL WIND TURBINE
BG111062 2011-10-19

Publications (1)

Publication Number Publication Date
WO2013056322A1 true WO2013056322A1 (fr) 2013-04-25

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Application Number Title Priority Date Filing Date
PCT/BG2012/000028 WO2013056322A1 (fr) 2011-10-19 2012-10-16 Éolienne à axe vertical

Country Status (2)

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BG (1) BG111062A (fr)
WO (1) WO2013056322A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9222461B2 (en) 2013-09-06 2015-12-29 Vert Wind Energy, Llc Vertical axis wind turbine system with one or more independent electric power generation units
WO2022194972A1 (fr) * 2021-03-17 2022-09-22 Harald Kuhn Dispositif de production d'énergie
WO2023285309A1 (fr) * 2021-07-12 2023-01-19 ActioEvent GmbH Ensemble de roues cellulaires et/ou roues à aubes
WO2024005749A1 (fr) * 2022-06-26 2024-01-04 Cevdet Koese Éolienne pyramidale

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236866A (en) * 1976-12-13 1980-12-02 Valentin Zapata Martinez System for the obtainment and the regulation of energy starting from air, sea and river currents
DE2948060A1 (de) * 1979-11-29 1981-06-04 Erno Raumfahrttechnik Gmbh, 2800 Bremen Vorrichtung zur umwandlung von windenergie
RU2006105624A (ru) 2003-07-24 2006-08-10 Квайэт Револьюшн Лимитед (Gb) Ветряная турбина с вертикальной осью
WO2006119648A1 (fr) * 2005-05-13 2006-11-16 Arrowind Corporation Eolienne helicoidale
US20100143096A1 (en) * 2008-08-21 2010-06-10 Carosi Claudio D Wind manipulator and turbine
WO2011072402A1 (fr) * 2009-12-14 2011-06-23 Habeco S.A. Eolienne polyvalente a axe vertical

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236866A (en) * 1976-12-13 1980-12-02 Valentin Zapata Martinez System for the obtainment and the regulation of energy starting from air, sea and river currents
DE2948060A1 (de) * 1979-11-29 1981-06-04 Erno Raumfahrttechnik Gmbh, 2800 Bremen Vorrichtung zur umwandlung von windenergie
RU2006105624A (ru) 2003-07-24 2006-08-10 Квайэт Револьюшн Лимитед (Gb) Ветряная турбина с вертикальной осью
WO2006119648A1 (fr) * 2005-05-13 2006-11-16 Arrowind Corporation Eolienne helicoidale
US20100143096A1 (en) * 2008-08-21 2010-06-10 Carosi Claudio D Wind manipulator and turbine
WO2011072402A1 (fr) * 2009-12-14 2011-06-23 Habeco S.A. Eolienne polyvalente a axe vertical

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9222461B2 (en) 2013-09-06 2015-12-29 Vert Wind Energy, Llc Vertical axis wind turbine system with one or more independent electric power generation units
US9803622B2 (en) 2013-09-06 2017-10-31 Vert Nova, Llc Vertical axis wind turbine system with one or more independent electric power generation units
US10316821B2 (en) 2013-09-06 2019-06-11 Vert Nova, Llc Vertical axis wind turbine system with one or more independent electric power generation units
WO2022194972A1 (fr) * 2021-03-17 2022-09-22 Harald Kuhn Dispositif de production d'énergie
WO2023285309A1 (fr) * 2021-07-12 2023-01-19 ActioEvent GmbH Ensemble de roues cellulaires et/ou roues à aubes
WO2024005749A1 (fr) * 2022-06-26 2024-01-04 Cevdet Koese Éolienne pyramidale

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