DE3045695A1 - Wing design for wind-driven mechanism - has inclined auxiliary wing behind main wing, forming gap for increase of force - Google Patents
Wing design for wind-driven mechanism - has inclined auxiliary wing behind main wing, forming gap for increase of forceInfo
- Publication number
- DE3045695A1 DE3045695A1 DE19803045695 DE3045695A DE3045695A1 DE 3045695 A1 DE3045695 A1 DE 3045695A1 DE 19803045695 DE19803045695 DE 19803045695 DE 3045695 A DE3045695 A DE 3045695A DE 3045695 A1 DE3045695 A1 DE 3045695A1
- Authority
- DE
- Germany
- Prior art keywords
- wing
- wind
- increase
- driven mechanism
- force
- 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- Withdrawn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
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
- F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
-
- 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
- F05B2240/301—Cross-section characteristics
-
- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
Description
Beschreibungdescription
Im Jahre 1925 har Prof. Betz in seinem Buch "Windenergie und ihre Ausnutzung durch Windmühlen" nachgewiesen, dassIn 1925 Prof. Betz demonstrated in his book "Wind energy and its utilization by windmills" that
1. nur 1/3 der im Winde enthaltenen Energie ausgenutzt werden kann. Der Rest wird zur Aufrechterhaltung des Prozesses benötigt.1. only 1/3 of the energy contained in the wind can be used. The rest is needed to keep the process running.
2. bei Ausnutzung des Widerstandes der Flügel nur 1/6 genutzt werden kann.2. If the resistance is used, the wing can only be used 1/6.
Für die maximale Leistung hat er folgende Formel aufgestellt:He created the following formula for maximum performance:
L[tief]max = v[hoch]3 / 27 . D[hoch]2 / 4 (mkg/sek) oderL [low] max = v [high] 3/27. D [high] 2/4 (mkg / sec) or
= 0,000 285 . v[hoch]3 . D[hoch]2 im kW.= 0.000 285. v [high] 3. D [high] 2 in kW.
Der von Prof. Betz entworfene Flügel verbreitert sich zum Drehpunkt hin beträchtlich.The wing designed by Prof. Betz widens considerably towards the pivot point.
Prof. Hütter hat nach dem Kriege die extrem schnell drehenden Windkraftanlagen entwickelt, und dies dadurch erreicht, dass die Flügelbreite möglichst schmal gehalten wurde, so dass Profile mit höherem Auftrieb verwendet werden konnten.After the war, Prof. Hütter developed the extremely fast rotating wind turbines and achieved this by keeping the wing width as narrow as possible so that profiles with higher lift could be used.
Den zur Zeit leistungsfähigsten Flügel besitzt der Voith-WEC 300, der am Rotor bei 8,5 m/sec Wind 315 Kw leistet. Nach Prof. Betz sind aber 475 kW möglich, so dass er einen Wirkungsgrad von 0,67 hat. Ein Flügel nach der Erfindung ist dadurch gekennzeichnet, dass hinter dem Flügel ein Hilfsflügel etwa 45° geneigt angebracht ist und zwischen beiden einen Spalt hat. Durch diese Anordnung wird erreicht, dass die Auftriebskraft des Flügels bis auf etwa den zweieinhalbfachen Wert gesteigert wird, so der von Prof. Betz angegebenen Wert in etwa erreicht werden kann. Figur 1The currently most powerful wing is the Voith-WEC 300, which has an output of 315 kW on the rotor at a wind speed of 8.5 m / sec. According to Prof. Betz, however, 475 kW are possible, so that it has an efficiency of 0.67. A wing according to the invention is characterized in that an auxiliary wing is attached at an angle of about 45 ° behind the wing and has a gap between the two. This arrangement ensures that the lift force of the wing is increased to about two and a half times the value, so that the value given by Prof. Betz can be reached. Figure 1
Diese Anordnung ist im Flugzeugbau als Start- und Landehilfe unter dem Namen Fowler-Flügel bekannt und langjährig erprobt.This arrangement is known in aircraft construction as a take-off and landing aid under the name Fowler wing and has been tried and tested for many years.
Quellennachweisreference
1. Windenergie und ihre Ausnutzung durch Windmühlen, Prof. Betz1. Wind energy and its use by windmills, Prof. Betz
2. Elementare Aerodynamik und Flugphysik, Günter Meyer, Leipzig2. Elementary aerodynamics and flight physics, Günter Meyer, Leipzig
3.3.
<NichtLesbar>
ttusreport Windenergie Oktober 1978, Bundesministerium für Forschung und Technik, S. 233 u.f.
<notreadable>
ttusreport wind energy October 1978, Federal Ministry for Research and Technology, p. 233 uf
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803045695 DE3045695A1 (en) | 1980-12-04 | 1980-12-04 | Wing design for wind-driven mechanism - has inclined auxiliary wing behind main wing, forming gap for increase of force |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803045695 DE3045695A1 (en) | 1980-12-04 | 1980-12-04 | Wing design for wind-driven mechanism - has inclined auxiliary wing behind main wing, forming gap for increase of force |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3045695A1 true DE3045695A1 (en) | 1982-08-19 |
Family
ID=6118274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19803045695 Withdrawn DE3045695A1 (en) | 1980-12-04 | 1980-12-04 | Wing design for wind-driven mechanism - has inclined auxiliary wing behind main wing, forming gap for increase of force |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3045695A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992001865A1 (en) * | 1990-07-26 | 1992-02-06 | Howden Wind Turbines Ltd. | Wind turbine blade and rotor incorporating same |
WO2010100237A2 (en) * | 2009-03-06 | 2010-09-10 | Vestas Wind Systems A/S | A wind turbine providing increased power output |
-
1980
- 1980-12-04 DE DE19803045695 patent/DE3045695A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992001865A1 (en) * | 1990-07-26 | 1992-02-06 | Howden Wind Turbines Ltd. | Wind turbine blade and rotor incorporating same |
WO2010100237A2 (en) * | 2009-03-06 | 2010-09-10 | Vestas Wind Systems A/S | A wind turbine providing increased power output |
WO2010100237A3 (en) * | 2009-03-06 | 2011-07-14 | Vestas Wind Systems A/S | A wind turbine providing increased power output |
CN102414440A (en) * | 2009-03-06 | 2012-04-11 | 维斯塔斯风力系统有限公司 | A wind turbine providing increased power output |
CN102414440B (en) * | 2009-03-06 | 2014-04-09 | 维斯塔斯风力系统有限公司 | Wind turbine providing increased power output |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |