DE19924506A1 - Oscillating tree wind power generator, converts fluctuating movement of trees caused by wind into other useful forms of energy, e.g. hydraulic or pneumatic, using technical systems - Google Patents
Oscillating tree wind power generator, converts fluctuating movement of trees caused by wind into other useful forms of energy, e.g. hydraulic or pneumatic, using technical systemsInfo
- Publication number
- DE19924506A1 DE19924506A1 DE1999124506 DE19924506A DE19924506A1 DE 19924506 A1 DE19924506 A1 DE 19924506A1 DE 1999124506 DE1999124506 DE 1999124506 DE 19924506 A DE19924506 A DE 19924506A DE 19924506 A1 DE19924506 A1 DE 19924506A1
- Authority
- DE
- Germany
- Prior art keywords
- tree
- wind
- energy
- pneumatic
- hydraulic
- 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.)
- Withdrawn
Links
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
- F03D5/00—Other wind motors
-
- 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
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
Description
Bekannt ist der Versuch, die winderregten Schwingungsenergien von Meereswellen durch mechanische Auskopplung in andere, nutzbare Energieformen überzuführen. Dieser Nutzung stehen erhebliche technische Schwierigkeiten bei der Meisterung der grossen Wellenkräfte gegenüber.The experiment is known, the wind-excited vibrational energies of ocean waves by mechanical coupling into other usable forms of energy. This use faces significant technical difficulties in mastering against the great wave forces.
Eine ähnliche natürliche Umwandlung der Windenergie findet an Land in Wäldern
und Bäumen statt. Dabei entstehen durch Turbulenzbildung schwankende
Windkräfte, welche die Baumstämme in elastische Schwingungen versetzen. Im
Gegensatz zu den Meereswellenkraftwerken kann aus diesen Schwingungen auf
relativ einfache Weise pneumatische, hydraulische und elektrische Energie
gewonnen werden. Im Vergleich zu den heute üblichen technischen Rotor-
Windanlagen und Windfarmen hat das erfindungsgemässe Baumschwingungs-
Wind-Kraftwerk zwei wesentliche Vorteile:
A similar natural conversion of wind energy takes place on land in forests and trees. Turbulence creates fluctuating wind forces that set the tree trunks in elastic vibrations. In contrast to ocean wave power plants, pneumatic, hydraulic and electrical energy can be obtained from these vibrations in a relatively simple manner. Compared to the technical rotor wind turbines and wind farms that are common today, the tree vibration wind power plant according to the invention has two major advantages:
- 1. Die in letzter Zeit gegenüber Windkraftanlagen immer häufiger auftauchenden Akzeptanzwiderstände wegen Lärmbelästigung ökologischen Beeinträchtigungen (z. B. Vogelschlag) und mangelnder Ästhetik fallen im Falle der Windnutzung von Bäumen und Wäldern fort.1. The ones that have been appearing more and more frequently compared to wind turbines recently Resistance to acceptance due to environmental pollution (e.g. bird strike) and poor aesthetics fall from the wind Trees and forests.
- 2. Der eigentliche"Windgenerator" wächst natürlich und kostenneutral Kosten treten nur im technischen Subsystem auf, das einfach und sehr ökonomisch gestaltet werden kann.2. The actual "wind generator" grows naturally and costs are neutral only in the technical subsystem that is simple and very economical can be.
Beispielsweise treten bei Windgeschwindigkeiten von v = 10 m/sec beachtliche
Windkräfte von ca. 20 N/m2 Baumfläche auf, die zu einer statistischen
Pendelbewegung des oberen Teiles des Baumstammes von W ≧ 1 m/sec führen und
eine mechanische Schwingungsleistung von
For example, at wind speeds of v = 10 m / sec, considerable wind forces of approx. 20 N / m 2 of tree area occur, which lead to a statistical pendulum movement of the upper part of the tree trunk of W ≧ 1 m / sec and a mechanical vibration output of
P = cw v2/2×w
P = c w v 2/2 × w
erzeugen.produce.
Dies bedeutet, dass pro m2 Blattangriffsfläche vom Winde ≧ 20 W mechanisch abnehmbare Leistung erzeugt werden. Ein mittelgrosser Baum von 20 m Höhe und einer angenommenen effektiven Blattfläche von ca. 100 m2 erzeugt unter diesen Umständen einige kW mechanischer Leistung.This means that mechanically removable power is generated by the winch pro 20 W per m 2 of the blade attack surface. A medium-sized tree with a height of 20 m and an assumed effective leaf area of approx. 100 m 2 generates a few kW mechanical power under these circumstances.
Erfindungsgemäss kann die Umwandlung dieser Bewegungsenergie in verschiedenen technischen Varianten vorgenommen werden.According to the invention, this kinetic energy can be converted into various technical variants can be made.
Gemäss Fig. 1 wird die Umwandlung der Schwingungsenergie durch mit Zugfedern (1) vorgespannte Drahtseile (2) vorgenommen, die über Seiltrommeln (3) und Übersetzungsgetriebe (4) Wechsel- oder Gleichstromgeneratoren (5) antreiben. Diese sind so geregelt, dass sie, je nach Anwendungsfall, entweder einen Wechselstrom von Netzfrequenz oder speziell für die Speicherung in Strombatterien und an das statistische Schwingungsverhalten der Bäume angepasst, einen intermitierenden Gleichstrom konstanter Spannung und Amplitude liefern.As shown in FIG. 1 is carried out the conversion of the vibration energy by pre-loaded with tension springs (1) wire rope (2), which drive (4) AC or DC current generators (5) on cable drums (3), and transmission gear. These are regulated in such a way that, depending on the application, they either supply an alternating current of the mains frequency or specially adapted for storage in current batteries and adapted to the statistical vibration behavior of the trees, an intermittent direct current of constant voltage and amplitude.
Gemäss Fig. 2 wird erfindungsgemäss die Schwingungsenergie mittels pneumatischer oder hydraulischer Kolbenzylinder (6), in ein Druckfluid umgewandelt. Dabei wird mittels Ventilen (7)-(8) das Druckfluid diskontinuierlich in den Kolbenarbeitsraum eingebracht und komprimiert in den Druckspeicher geleitet. Die auf diese Weise gespeicherte Schwingungsenergie des Baumes kann nun beispielsweise über eine Arbeitsmaschine (8) einen Generator (9) zugeführt werden.According to FIG. 2 according to the invention is converted to the vibration energy by means of pneumatic or hydraulic piston cylinder (6) in a pressurized fluid. The pressure fluid is introduced discontinuously into the piston working space by means of valves ( 7 ) - ( 8 ) and conducted compressed into the pressure accumulator. The vibration energy of the tree stored in this way can now be supplied to a generator ( 9 ), for example via a work machine ( 8 ).
Da sich ein Baum bei verschiedenen Windlagen in verschiedenen Auslenkungsmittelstellungen begibt und dann um diese herum periodische Schwingungen ausführt, können sich die pneumatischen oder hydraulischen Zylinder erfindungsgemäss mittels einstellbarer Reibung im Führungszylinder so axial bewegen, dass sie der Gesamtdeformation des windgeschüttelten Baumes folgen.Because a tree is in different wind conditions in different Deflection means positions and then periodic around them The pneumatic or hydraulic cylinder can vibrate according to the invention by means of adjustable friction in the guide cylinder so axially move that they follow the overall deformation of the wind-shaken tree.
In Fig. 3 ist eine solche erfindungsgemässe Rutschkupplung mittels Permanentmagneten dargestellt. Dabei stellt (10) ein Rohr dar, das über den pneumatischen oder hydraulischen Kolbenzylinder (6) geschoben ist. Die Innenseiten von (10) und (6) sind dabei in der Weise mit gegenpoligen Permanentmagneten versehen, dass der Gesamtwandler gemäss der sich jeweils einstellenden Auslenkungsmittelstellung des Baumes verrutscht und somit die volle Schwingungsamplitude des Baumes nutzen kann.In Fig. 3, such a slip clutch according to the invention is illustrated by means of permanent magnets. ( 10 ) represents a tube which is pushed over the pneumatic or hydraulic piston cylinder ( 6 ). The inner sides of ( 10 ) and ( 6 ) are provided with opposite-pole permanent magnets in such a way that the overall transducer slips in accordance with the position of the boom that is set in each case and can thus use the full vibration amplitude of the tree.
Erfindungsgemäss kommen vor allem lange schlanke Baumstämme (z. B. Fichten, Pappeln, Kiefern, Palmen usw.) mit grossflächigen Kronen für die erfindungsgemässe Umsetzung in Frage. Damit die Seile die Baumstämme nicht beschädigen, sind sie im Umschlingungsbereich mit breiten Schutzmanschetten versehen. Als gegenüberliegender Fixpunkt dient, wie aus Fig. 1 hervorgeht, der untere Stammbereich eines in geeigneter Richtung (Hauptwindrichtung) liegenden Baumes. Dieser Befestigungspunkt kann, falls durch zu tief gespannte Seile eine Gefährdung von Tieren und Menschen zu befürchten wäre, auch ohne grosse Leistungseinbußen in mehreren m Höhe befestigt werden.According to the invention, long, slim tree trunks (eg spruces, poplars, pines, palm trees, etc.) with large-area crowns are particularly suitable for the implementation according to the invention. So that the ropes do not damage the tree trunks, they are provided with wide protective sleeves in the loop area. As can be seen from FIG. 1, the lower trunk area of a tree lying in a suitable direction (main wind direction) serves as the opposite fixed point. This fastening point can be fastened at a height of several meters if there is a danger to animals and humans due to ropes that are too tight.
Für Standorte mit häufig wechselnder Windrichtung soll jeder Baum gemäss Fig. 4 mit mindestens 3 Zugseilen versehen werden. Dabei wird erfindungsgemäss jedes einzelne Seil mit einem Energieumwandler ausgerüstet. Diese können entweder individuell angezapft werden oder ihre periodisch schwankenden Leistungen beispielsweise einem Energiespeicher (pneumatisch, hydraulisch oder elektrisch) zuführen.For locations with frequently changing wind directions, each tree according to FIG. 4 should be provided with at least 3 traction ropes. According to the invention, each individual rope is equipped with an energy converter. These can either be tapped individually or feed their periodically fluctuating outputs to an energy store (pneumatic, hydraulic or electrical), for example.
Erfindungsgemäss kann auch die Windkraftenergie ganzer Baumgruppen einem zentralen Nutzungsaggregat oder Speicher zugeführt werden. Dazu werden gemäss Fig. 5 Baumgruppen so zusammengefasst, dass die in einem definierten Akzeptanzwinkel α bezogen auf die Hauptwindrichtung liegenden Bäume, auf eine zentrale Maschine, Pneumo oder Hydrokolben oder Stromgenerator, (11) wirken und diese wahlweise einen Energiespeicher (12) laden.According to the invention, the wind power energy of entire groups of trees can also be fed to a central utilization unit or storage. For this purpose, groups of trees are summarized in accordance with FIG. 5 such that the trees lying at a defined acceptance angle α in relation to the main wind direction act on a central machine, pneumo or hydro piston or power generator ( 11 ) and optionally load an energy store ( 12 ).
Erfindungsgemäss ist es aber auch möglich, technische Systeme zur Energieumwandlung direkt entlang des Baumstammes anzubringen.According to the invention, however, it is also possible to use technical systems for Attach energy conversion directly along the tree trunk.
In Fig. 6a ist der Schnitt durch einen Baumstamm (13) dargestellt, der längs seines Umfanges von flüssigkeits- oder gasgefüllten, in Richtung zu ihrer Längsachse hochelastischen, Röhren umgeben ist (14). Aus Fig. 6b geht hervor, dass die jeweils an ihrem oberen und unteren Ende mit dem Stamm festverbundenen Röhren so ausgebildet sind, dass sie sich in Längsrichtung dehnen lassen, dabei eine Volumenkontraktion erfahren und dennoch möglichst verformungsfest gegenüber den sich aufbauenden Innendruck sind. Dies kann erfindungsgemäss beispielsweise durch einen kreuzgewickelten (15) Elastomerschlauch genügender Wandstärke geschehen. Die Röhren sind an ihrem unteren bzw. oberen Enden mit unter bzw. Überdruckventilen versehen. Verformt sich der Baumstamm elastisch im Winde, so werden die sich jeweils auf der konvexen Seite angebrachten Röhren unter Verdünnung verlängern und das Arbeitsfluid unter erhöhtem Druck in den Energiespeicher (16) leiten.In Fig. 6a the section through a tree trunk ( 13 ) is shown, which is surrounded along its circumference by liquid or gas filled, highly elastic in the direction of its longitudinal axis, tubes ( 14 ). From Fig. 6b shows that each rigidly connected at their upper and lower ends with the trunk tubes are formed so that they can be stretched in the longitudinal direction, thereby undergo a contraction in volume and yet possible deformation fixed relative to the build-up internal pressure is. According to the invention, this can be done, for example, by means of a cross-wound ( 15 ) elastomer tube of sufficient wall thickness. The tubes are provided with pressure relief valves at their lower and upper ends. If the tree trunk deforms elastically in the wind, the tubes attached to the convex side will lengthen and dilute and the working fluid will flow into the energy store ( 16 ) under increased pressure.
Wenn im weiteren Verlaufe der Baumbewegung die selbe Röhre sich im konkaven Teil des elastisch schwingenden Baumstammes befindet, wird sie sich unter Volumenvergrösserung verkürzen und durch das untere Ventil neues Arbeitsfluid nachsaugen. Die beschriebene erfindungsgemässe Anordnung stellt somit eine windbetriebene Peristaltikdruckerhöhungspumpe dar.If in the further course of the tree movement the same tube is concave Part of the elastic swinging tree trunk, it will be under Shorten volume increase and new working fluid through the lower valve suck up. The described arrangement according to the invention thus represents a wind powered peristaltic booster pump.
Erfindungsgemäss kann auch der bekannte Effekt der Piezoelektrizität zur direkten Wandlung der Baumschwingungs- in elektrische Energie genutzt werden.According to the invention, the known effect of piezoelectricity can also be used for direct Conversion of tree vibrations into electrical energy can be used.
Grundsätzlich stellen die beschriebenen technischen Systeme zur Nutzung der Energie im Winde schwingender Bäume auch eine Massnahme zur Stabilisierung gegen Windbruch bei starken Stürmen dar, da die Schwingungsamplituden im Kronenbereich bedämpft werden.Basically, the described technical systems for using the Energy of trees swinging in the wind is also a measure for stabilization against strong winds due to strong storms, as the vibration amplitudes in the Crown area are damped.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999124506 DE19924506A1 (en) | 1999-05-28 | 1999-05-28 | Oscillating tree wind power generator, converts fluctuating movement of trees caused by wind into other useful forms of energy, e.g. hydraulic or pneumatic, using technical systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999124506 DE19924506A1 (en) | 1999-05-28 | 1999-05-28 | Oscillating tree wind power generator, converts fluctuating movement of trees caused by wind into other useful forms of energy, e.g. hydraulic or pneumatic, using technical systems |
Publications (1)
Publication Number | Publication Date |
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DE19924506A1 true DE19924506A1 (en) | 2000-11-30 |
Family
ID=7909485
Family Applications (1)
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DE1999124506 Withdrawn DE19924506A1 (en) | 1999-05-28 | 1999-05-28 | Oscillating tree wind power generator, converts fluctuating movement of trees caused by wind into other useful forms of energy, e.g. hydraulic or pneumatic, using technical systems |
Country Status (1)
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20111266U1 (en) * | 2001-07-06 | 2002-11-14 | Hechler, Bernd, 64319 Pfungstadt | Wind Turbine |
US6825574B1 (en) * | 2002-09-13 | 2004-11-30 | Jon Mooring | Spring motor powered electricity generation system actuated by reciprocating natural forces |
DE202004013840U1 (en) * | 2004-09-06 | 2006-01-19 | Skysails Gmbh & Co. Kg | Watercraft with a kite-like element |
DE102007011582A1 (en) * | 2007-03-08 | 2008-09-11 | Richard Schmidler | Method for utilizing regenerative energy, involves converting air pressure fluctuations that are arising during vehicle passage on walls flanking route |
ES2344725A1 (en) * | 2010-05-24 | 2010-09-03 | Pablo Izquierdo Montoro | Aerospheric converter (Machine-translation by Google Translate, not legally binding) |
FR2950938A1 (en) * | 2009-10-06 | 2011-04-08 | Francois Jean Michel Brunet | Device for producing electricity by wind movement on tree, has winder including spring for rewinding cable and engaged with electric generator, and casing fixed on ground and provided with control part |
US7936079B2 (en) * | 2008-03-06 | 2011-05-03 | Howard David Rees | Distributed system of electrical generators utilizing wind driven natural motion of trees |
US8497595B1 (en) | 2009-11-16 | 2013-07-30 | Lockheed Martin Corporation | Surface wind power generation array |
CN103758718A (en) * | 2013-12-31 | 2014-04-30 | 浙江工业大学 | Power generation device utilizing trunk expansion energy |
US20150042100A1 (en) * | 2012-11-16 | 2015-02-12 | John A. Saavedra | Power generator utilizing a tethered wind resistor |
US20150076829A1 (en) * | 2012-11-16 | 2015-03-19 | John A. Saavedra | Apparatus for harvesting wind |
WO2016053214A1 (en) * | 2014-10-02 | 2016-04-07 | Eroğlu Ali Riza | Electricity generating systems with flexure |
GB2538984A (en) * | 2015-05-30 | 2016-12-07 | Graham Barker Stuart | Apparatus to derive energy from trees |
CN111436328A (en) * | 2019-01-17 | 2020-07-24 | 宁波团团工业设计有限公司 | Transmission device capable of swinging along with trees |
CN111441905A (en) * | 2019-01-17 | 2020-07-24 | 宁波团团工业设计有限公司 | Power generation device using trees |
CN111441899A (en) * | 2019-01-17 | 2020-07-24 | 宁波团团工业设计有限公司 | Transmission device |
Citations (3)
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DE3629804A1 (en) * | 1986-09-02 | 1988-03-03 | Heinrich Prof Dr Ing Reents | Process with the associated equipment for generating energy with the help of artificial energy plants |
DE9101481U1 (en) * | 1991-02-09 | 1991-06-06 | Martens, Jörn, 27711 Osterholz-Scharmbeck | Bracket for attaching small wind power plants, preferably wind turbines, to trees, poles, etc., for their use as supporting structures for e.g. wind farms |
DE4422309C2 (en) * | 1994-06-17 | 1997-12-04 | Paul Link | Device for harnessing wind energy |
-
1999
- 1999-05-28 DE DE1999124506 patent/DE19924506A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3629804A1 (en) * | 1986-09-02 | 1988-03-03 | Heinrich Prof Dr Ing Reents | Process with the associated equipment for generating energy with the help of artificial energy plants |
DE9101481U1 (en) * | 1991-02-09 | 1991-06-06 | Martens, Jörn, 27711 Osterholz-Scharmbeck | Bracket for attaching small wind power plants, preferably wind turbines, to trees, poles, etc., for their use as supporting structures for e.g. wind farms |
DE4422309C2 (en) * | 1994-06-17 | 1997-12-04 | Paul Link | Device for harnessing wind energy |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20111266U1 (en) * | 2001-07-06 | 2002-11-14 | Hechler, Bernd, 64319 Pfungstadt | Wind Turbine |
US6825574B1 (en) * | 2002-09-13 | 2004-11-30 | Jon Mooring | Spring motor powered electricity generation system actuated by reciprocating natural forces |
DE202004013840U1 (en) * | 2004-09-06 | 2006-01-19 | Skysails Gmbh & Co. Kg | Watercraft with a kite-like element |
JP2008512593A (en) * | 2004-09-06 | 2008-04-24 | スカイセールズ ゲーエムベーハー ウント コー. カーゲー | Watercraft with kite-like elements |
DE102007011582A1 (en) * | 2007-03-08 | 2008-09-11 | Richard Schmidler | Method for utilizing regenerative energy, involves converting air pressure fluctuations that are arising during vehicle passage on walls flanking route |
US7936079B2 (en) * | 2008-03-06 | 2011-05-03 | Howard David Rees | Distributed system of electrical generators utilizing wind driven natural motion of trees |
FR2950938A1 (en) * | 2009-10-06 | 2011-04-08 | Francois Jean Michel Brunet | Device for producing electricity by wind movement on tree, has winder including spring for rewinding cable and engaged with electric generator, and casing fixed on ground and provided with control part |
US8497595B1 (en) | 2009-11-16 | 2013-07-30 | Lockheed Martin Corporation | Surface wind power generation array |
ES2344725A1 (en) * | 2010-05-24 | 2010-09-03 | Pablo Izquierdo Montoro | Aerospheric converter (Machine-translation by Google Translate, not legally binding) |
US20150042100A1 (en) * | 2012-11-16 | 2015-02-12 | John A. Saavedra | Power generator utilizing a tethered wind resistor |
US20150076829A1 (en) * | 2012-11-16 | 2015-03-19 | John A. Saavedra | Apparatus for harvesting wind |
CN103758718A (en) * | 2013-12-31 | 2014-04-30 | 浙江工业大学 | Power generation device utilizing trunk expansion energy |
CN103758718B (en) * | 2013-12-31 | 2016-04-13 | 浙江工业大学 | Utilize the electricity generating device of trunk expansion energy |
WO2016053214A1 (en) * | 2014-10-02 | 2016-04-07 | Eroğlu Ali Riza | Electricity generating systems with flexure |
GB2538984A (en) * | 2015-05-30 | 2016-12-07 | Graham Barker Stuart | Apparatus to derive energy from trees |
CN111436328A (en) * | 2019-01-17 | 2020-07-24 | 宁波团团工业设计有限公司 | Transmission device capable of swinging along with trees |
CN111441905A (en) * | 2019-01-17 | 2020-07-24 | 宁波团团工业设计有限公司 | Power generation device using trees |
CN111441899A (en) * | 2019-01-17 | 2020-07-24 | 宁波团团工业设计有限公司 | Transmission device |
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