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WO2010036216A1 - Eolienne dotée de mélangeurs et d’éjecteurs - Google Patents

Eolienne dotée de mélangeurs et d’éjecteurs Download PDF

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Publication number
WO2010036216A1
WO2010036216A1 PCT/US2008/011016 US2008011016W WO2010036216A1 WO 2010036216 A1 WO2010036216 A1 WO 2010036216A1 US 2008011016 W US2008011016 W US 2008011016W WO 2010036216 A1 WO2010036216 A1 WO 2010036216A1
Authority
WO
WIPO (PCT)
Prior art keywords
shroud
ejector
turbine
mixer
impeller
Prior art date
Application number
PCT/US2008/011016
Other languages
English (en)
Other versions
WO2010036216A8 (fr
Inventor
Walter M. Presz
Michael J. Werle
Original Assignee
Flodesign Wind Turbine Corporation
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 Flodesign Wind Turbine Corporation filed Critical Flodesign Wind Turbine Corporation
Priority to CN200880016922A priority Critical patent/CN101849102A/zh
Priority to KR1020097022229A priority patent/KR20110044828A/ko
Priority to CA2679562A priority patent/CA2679562A1/fr
Priority to EP08873518A priority patent/EP2220365A1/fr
Priority to MX2009010236A priority patent/MX2009010236A/es
Priority to AU2008362202A priority patent/AU2008362202A1/en
Priority to PCT/US2008/011016 priority patent/WO2010036216A1/fr
Priority to JP2011527785A priority patent/JP2012503731A/ja
Priority to BRPI0809257-5A priority patent/BRPI0809257A2/pt
Priority to ZA2009/06650A priority patent/ZA200906650B/en
Priority to IL201144A priority patent/IL201144A0/en
Publication of WO2010036216A1 publication Critical patent/WO2010036216A1/fr
Publication of WO2010036216A8 publication Critical patent/WO2010036216A8/fr

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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • 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 
    • F03D1/04—Wind motors with rotation axis substantially parallel 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
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • 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
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • F05B2240/133—Stators to collect or cause flow towards or away from turbines with a convergent-divergent guiding structure, e.g. a Venturi conduit
    • 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
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • 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
    • 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 present invention deals generally with wind turbines. More particularly, it deals with apparatus for wind turbines.
  • Wind turbines usually contain a propeller-like device, termed the "rotor", which is faced into a moving air stream. As the air hits the rotor, the air produces a force on the rotor in such a manner as to cause the rotor to rotate about its center.
  • the rotor is connected to either an electricity generator or mechanical device through linkages such as gears, belts, chains or other means.
  • Such turbines are used for generating electricity and powering batteries. They are also used to drive rotating pumps and/or moving machine parts. It is very common to find wind turbines in large electricity generating "wind farms" containing multiple such turbines in a geometric pattern designed to allow maximum power extraction with minimal impact of each such turbine on one another and/or the surrounding environment.
  • Patent No. 4,204,799 to de Geus see FIG. 1C
  • U.S. Patent No. 4,075,500 to Oman et al. see FIG. ID
  • U.S. Patent No. 6,887,031 to Tocher Properly designed shrouds cause the oncoming flow to speed up as it is concentrated into the center of the duct. In general, for a properly designed rotor, this increased flow speed causes more force on the rotor and subsequently higher levels of power extraction. Often though, the rotor blades break apart due to the shear and tensile forces involved with higher winds.
  • Ejectors are well known and documented fluid jet pumps that draw flow into a system and thereby increase the flow rate through that system.
  • Mixer/ejectors are short compact versions of such jet pumps that are relatively insensitive to incoming flow conditions and have been used extensively in high speed jet propulsion applications involving flow velocities near or above the speed of sound. See, for example, U.S. Patent No. 5,761,900 by Dr. Walter M. Presz, Jr, which also uses a mixer downstream to increase thrust while reducing noise from the discharge. Dr. Presz is a co-inventor in the present application.
  • Gas turbine technology has yet to be applied successfully to axial flow wind turbines. There are multiple reasons for this shortcoming. Existing wind turbines commonly
  • a method and apparatus are disclosed for improving the sustainable efficiency of wind turbines beyond the Betz limit. Both the method and apparatus use fluid dynamic ejector concepts and advanced flow mixing to increase the operational efficiency, while lowering the noise level, of Applicant's unique wind turbine compared to existing wind turbines.
  • Applicant's preferred apparatus is a mixer/ejector wind turbine (nicknamed “MEWT").
  • the MEWT is an axial flow turbine comprising, in order going downstream: a turbine shroud having a flared inlet; a ring of stators within the shroud; an impeller having a ring of impeller blades "in line” with the stators; a mixer, attached to the turbine shroud, having a ring of mixing lobes extending downstream beyond the impeller blades; and an ejector comprising the ring of mixing lobes (e.g., like that shown in U.S. Patent No.
  • the preferred MEWT contains a shroud with advanced flow mixing and control devices such as lobed or slotted mixers and/or one or more ejector pumps.
  • the mixer/ejector pump presented is much different than used in the aircraft industry since the high energy air flows into the ejector inlets, and outwardly surrounds, pumps and mixes with the low energy air exiting the turbine shroud.
  • the MEWT broadly comprises: an axial flow wind turbine surrounded by a turbine shroud, with a flared inlet, incorporating mixing devices in its terminus region (i.e., an end portion of the turbine shroud) and a separate ejector duct overlapping but aft of said turbine shroud, which itself may incorporate advanced mixing devices in its terminus region.
  • the MEWT comprises: an axial flow wind turbine surrounded by an aerodynamically contoured turbine shroud incorporating mixing devices in its terminus region.
  • the preferred method comprises: generating a level of power over the Betz limit for a wind turbine (preferably an axial flow wind turbine), of the type having a turbine shroud with a flared inlet and an impeller downstream having a ring of impeller blades, by receiving and directing a primary air stream of ambient air into a turbine shroud; rotating the impeller inside the shroud by the primary air stream, whereby the primary air stream transfers energy to the impeller; and, entraining and mixing a secondary air stream of ambient air exclusively with the primary air stream, which has passed the impeller, via a mixer and an ejector sequentially downstream of the impeller.
  • a wind turbine preferably an axial flow wind turbine
  • An alternate method comprises: generating a level of power over the Betz limit for a wind mill, having a turbine shroud with a flared inlet and an propeller-like rotor downstream, by entraining and mixing ambient air exclusively with lower energy air, which has passed through the turbine shroud and rotor, via a mixer and an ejector sequentially downstream of the rotor.
  • FIGS. IA, IB, 1C and ID labeled "Prior Art", illustrate examples of prior turbines
  • FIG. 2 is an exploded view of Applicants' preferred MEWT embodiment, constructed in accordance with the present invention.
  • FIG. 3 is a front perspective view of the preferred MEWT attached to a support tower
  • FIG. 4 is a front perspective view of a preferred MEWT with portions broken away to show interior structure, such as a power takeoff in the form of a wheel-like structure attached to the impeller;
  • FIG. 5 is a front perspective view of just the stator, impeller, power takeoff, and support shaft from FIG. 4;
  • FIG. 6 is an alternate embodiment of the preferred MEWT with a mixer/ejector pump having mixer lobes on the terminus regions ⁇ i.e., an end portion) of the ejector shroud;
  • FIG. 7 is a side cross-sectional view of the MEWT of FIG. 6;
  • FIG. 8 is a close-up of a rotatable coupling (encircled in FIG. 7), for rotatably attaching the MEWT to a support tower, and a mechanical rotatable stator blade variation;
  • FIG. 9 is a front perspective view of an MEWT with a propeller-like rotor;
  • FIG. 10 is a rear perspective view of the MEWT of FIG. 9;
  • FIG. 11 shows a rear plan view of the MEWT of FIG. 9;
  • FIG. 12 is a cross-sectional view taken along sight line 12 — 12 of FIG. 11;
  • FIG. 13 is a front plan view of the MEWT of FIG. 9;
  • FIG. 14 is a side cross-sectional view, taken along sight line 14 — 14 of FIG. 13, showing two pivotable blockers for flow control;
  • FIG. 15 is a close-up of an encircled blocker in FIG. 14;
  • FIG. 16 illustrates an alternate embodiment of an MEWT with two optional pivoting wing-tabs for wind alignment
  • FIG. 17 is a side cross-sectional view of the MEWT of FIG 16;
  • FIG. 18 is a front plan view of an alternate embodiment of the MEWT incorporating a two-stage ejector with mixing devices (here, a ring of slots) in the terminus regions of the turbine shroud (here, mixing lobes) and the ejector shroud;
  • mixing devices here, a ring of slots
  • FIG. 19 is a side cross-sectional view of the MEWT of FIG. 18;
  • FIG. 20 is a rear view of the MEWT of FIG. 18;
  • FIG. 21 is a front perspective view of the MEWT of FIG. 18;
  • FIG. 22 is a front perspective view of an alternate embodiment of the MEWT incorporating a two-stage ejector with mixing lobes in the terminus regions of the turbine shroud and the ejector shroud;
  • FIG. 23 is a rear perspective view of the MEWT of FIG. 22;
  • FIG. 24 shows optional acoustic lining within the turbine shroud of FIG. 22;
  • FIG. 25 shows a MEWT with a noncircular shroud component
  • FIG. 26 shows an alternate embodiment of the preferred MEWT with mixer lobes on the terminus region (i.e., an end portion) of the turbine shroud.
  • FIGS. 2-25 show alternate embodiments of
  • 100 is an axial flow wind turbine comprising: a. an aerodynamically contoured turbine shroud 102; b. an aerodynamically contoured center body 103 within and attached to the turbine shroud 102; c. a turbine stage 104, surrounding the center body 103, comprising a stator ring 106 of stator vanes (e.g., 108a) and an impeller or rotor 110 having impeller or rotor blades (e.g., 112a) downstream and "in-line" with the stator vanes (i.e., leading edges of the impeller blades are substantially aligned with trailing edges of the stator vanes), in which: i. the stator vanes (e.g., 108a) are mounted on the center body
  • the impeller blades e.g., 112a
  • the impeller blades are attached and held together by inner and outer rings or hoops mounted on the center body 103; d. a mixer 118 having a ring of mixer lobes (e.g., 120a) on a terminus region (i.e., end portion) of the turbine shroud 102, wherein the mixer lobes (e.g., 120a) extend downstream beyond the impeller blades (e.g., 112a); and e.
  • an ejector 122 comprising a shroud 128, surrounding the ring of mixer lobes (e.g., 120a) on the turbine shroud, with a profile similar to the ejector lobes shown in U.S. Patent No. 5,761,900, wherein the mixer lobes (e.g., 120a) extend downstream and into an inlet 129 of the ejector shroud 128.
  • the center body 103 of MEWT 100 is preferably connected to the turbine shroud 102 through the stator ring 106 (or other means) to eliminate the damaging, annoying and long distance propagating low-frequency sound produced by traditional wind turbines as the turbine's blade wakes strike the support tower.
  • the aerodynamic profiles of the turbine shroud 102 and ejector shroud 128 preferably are aerodynamically cambered to increase flow through the turbine rotor.
  • the area ratio of the ejector pump 122, as defined by the ejector shroud 128 exit area over the turbine shroud 102 exit area will be between 1.5 and 3.0.
  • the number of mixer lobes e.g., 120a
  • Each lobe will have inner and outer trailing edge angles between 5 and 25 degrees.
  • the primary lobe exit location will be at, or near, the entrance location or inlet 129 of the ejector shroud 128.
  • the height-to-width ratio of the lobe channels will be between 0.5 and 4.5.
  • the mixer penetration will be between 50% and 80%.
  • the center body 103 plug trailing edge angles will be thirty degrees or less.
  • the length to diameter (L/D) of the overall MEWT 100 will be between 0.5 and 1.25.
  • MEWT embodiment 100 will generate between at least two to three times the existing power of the same size conventional wind turbine (shown in FIG. IA). Applicant's combined mixer and ejector draw into an associated turbine rotor two or three times the volume of air drawn into the rotors of traditional wind mills.
  • FIG. 1 convert wind into rotational and then electrical power.
  • Such rotors can only displace, theoretically, a maximum of 59.3% of the oncoming stream's power. That 59.3% efficiency is known as the "Betz" limit, as described in the Background of this application.
  • the Betz limit Since their preferred method and apparatus increase the volume of air displaced by traditional wind turbines, with comparable frontal areas, by at least a factor of two or three, Applicants believe their preferred method and apparatus can sustain an operational efficiency beyond the Betz limit by a similar amount. Applicants believe their other embodiments also will exceed the Betz limit consistently, depending of course on sufficient winds.
  • the preferred "apparatus" embodiment 100 of the MEWT comprises: an axial flow turbine (e.g., stator vanes and impeller blades) surrounded by an aerodynamically contoured turbine shroud 102 (i.e., a shroud with a flared inlet) incorporating mixing devices in its terminus region (i.e., end portion); and a separate ejector shroud (e.g., 128) overlapping, but aft, of turbine shroud 102, which itself may incorporate advanced mixing devices (e.g., mixer lobes) in its terminus region.
  • an axial flow turbine e.g., stator vanes and impeller blades
  • an aerodynamically contoured turbine shroud 102 i.e., a shroud with a flared inlet
  • mixing devices e.g., mixer lobes
  • Applicants' ring 118 of mixer lobes (e.g., 120a) combined with the ejector shroud 128 can be thought of as a mixer/ejector pump.
  • This mixer/ejector pump provides the means for consistently exceeding the Betz limit for operational efficiency of the wind turbine.
  • Applicants have also presented supplemental information for the preferred embodiment 100 of MEWT shown in FIGS. 2 and 3. It comprises a turbine stage 104 (i.e., with a stator ring 106 and an impeller 110) mounted on center body 103, surrounded by turbine shroud 102 with embedded mixer lobes (e.g., 120a) having trailing edges inserted slightly in the entrance plane of ejector shroud 128.
  • the turbine stage 104 and ejector shroud 128 are structurally connected to the turbine shroud 102, which itself is the principal load carrying member.
  • the length of the turbine shroud 102 is equal or less than the turbine shroud's outer maximum diameter.
  • the length of the ejector shroud 128 is equal to or less than the ejector shroud's outer maximum diameter.
  • the exterior surface of the center body 103 is aerodynamically contoured to minimize the effects of flow separation downstream of the MEWT 100. It may be longer or shorter than the turbine shroud 102 or the ejector shroud 128, or their combined lengths.
  • the turbine shroud's entrance area and exit area will be equal to or greater than that of the annulus occupied by the turbine stage 104, but need not be circular in shape so as to allow better control of the flow source and impact of its wake.
  • the internal flow path cross-sectional area formed by the annulus between the center body 103 and the interior surface of the turbine shroud 102 is aerodynamically shaped to have a minimum area at the plane of the turbine and to otherwise vary smoothly from their respective entrance planes to their exit planes.
  • the turbine and ejector shrouds' external surfaces are aerodynamically shaped to assist guiding the flow into the turbine shroud inlet, eliminating flow separation from their surfaces, and delivering smooth flow into the ejector entrance 129.
  • the ejector 128 entrance area which may be noncircular in shape (see, e.g., FIG. 25), is larger than the mixer 118 exit plane area and the ejector's exit area may also be noncircular in shape.
  • Optional features of the preferred embodiment 100 can include: a power takeoff 130 (see FIGS. 4 and 5), in the form of a wheel-like structure, which is mechanically linked at an outer rim of the impeller 110 to a power generator (not shown); a vertical support shaft 132 with a rotatable coupling at 134 (see FIG.
  • a self-moving vertical stabilizer or "wing-tab" 136 (see FIG. 4), affixed to upper and lower surfaces of ejector shroud 128, to stabilize alignment directions with different wind streams.
  • MEWT 100 when used near residences, can have sound absorbing material affixed to the inner surface of its shrouds 102, 128 (see FIG. 24) to absorb and thus virtually eliminate the relatively high frequency sound waves produced by the interaction of the stator 106 wakes with the impeller 110.
  • the METW can also contain safety blade containment structure (not shown).
  • FIGS. 14 and 15 show optional flow blockage doors 140a, 140b. They can be rotated via linkage (not shown) into the flow stream to reduce or stop flow through the turbine 100 when damage, to the generator or other components, due to high flow velocity is possible.
  • FIG. 8 presents another optional variation of Applicants' preferred MEWT
  • stator vanes' exit-angle incidence is mechanically varied in situ ⁇ i.e., the vanes are pivoted) to accommodate variations in the fluid stream velocity so as to assure minimum residual swirl in the flow exiting the rotor.
  • Applicants' alternate MEWT embodiments shown in FIGS. 9-23 and 26, each use a propeller-like rotor (e.g., 142 in FIG. 9) rather than a turbine rotor with a ring of impeller blades. While perhaps not as efficient, these embodiments may be more acceptable to the public.
  • Applicants' alternate "apparatus" embodiments are variations 200, 300, 400,
  • FIG. 6 shows a "two-stage" ejector variation 600 of the pictured embodiment
  • the alternate "apparatus" embodiments 200, 300, 400, 500 in FIGS. 9-25 can be thought of broadly as comprising: a. a wind mill, or wind turbine, having a shroud with a flared inlet; b. a propeller-like rotor downstream of the inlet; c. a mixer having a ring of mixer lobes which extend adjacent to and downstream of the rotor; and d. an ejector surrounding trailing edges of the mixer lobes and extending downstream from the mixer lobes.
  • Each of Applicant's illustrated wind turbine shrouds is adapted in size and shape to produce a series of low loss mixing vortices, due to substantial non-uniformity of at least the turbine shroud, downstream of the impeller (a.k.a. rotor), when the wind turbine is exposed to a wind moving in the downstream direction.
  • Each turbine shroud has a wall which varies substantially in thickness along an axis of rotation of the impeller. So do the ejectors.
  • Applicants believe that even without an ejector (e.g., see FIG. 26), a mixer would still increase the volume of air entering into and displaced by Applicants' rotors, and hence increase the efficiency over prior wind turbines (whether shrouded or not) having comparable frontal areas. The increase, however, would be smaller than with an ejector.
  • Each embodiment of Applicant's wind turbine has an "upstream" direction and a "downstream” direction. By those terms, Applicant is referring to the position of each structural part relative to the direction of the incoming wind, when the turbine inlet is turned substantially into the wind.
  • Applicant's invention can be thought of in terms of methods.
  • the preferred method comprises: a. generating a level of power over the Betz limit for a wind turbine
  • An alternate method comprises: a.
  • generating a level of power over the Betz limit for a wind mill having a turbine shroud with a flared inlet and an propeller-like rotor downstream, by: i. receiving and directing a primary air stream of ambient air into the flared inlet and through the turbine shroud; ii. rotating the impeller inside the shroud by the primary air stream, whereby the primary air stream transfers energy to the rotor and becomes a lower energy air stream; and iii. entraining and mixing a secondary stream of ambient air with the lower energy air stream via a mixer and an ejector sequentially downstream of the rotor.
  • Applicants' methods can also comprise: a. directing the primary air stream, after rotating the impeller in the turbine shroud, away from a rotational axis of the impeller; and b. directing the secondary air stream, after entering the ejector shroud, towards the impeller rotational axis.
  • Applicants' preferred method(s) entrain and mix a secondary stream of ambient air (i.e., wind) exclusively with lower energy air (i.e., a partially spent primary stream of ambient air) which has passed through a turbine shroud and rotor.
  • a secondary stream of ambient air i.e., wind
  • lower energy air i.e., a partially spent primary stream of ambient air
  • Yet another broader, alternative method comprises: a. increasing the volume of air flowing through a wind mill, of the type having a rotor, by: i. entraining and mixing ambient air exclusively with lower energy air, which has passed through the rotor, via a mixer adjacent to and downstream of the impeller.
  • This broader method can further include the steps of: increasing the volume of ambient air flowing through the wind mill, while minimizing the noise level of the discharge flow from the wind mill, by an ejector downstream of the mixer.

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  • Engineering & Computer Science (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 un système d'éolienne dotée d'un mélangeur/éjecteur (« MEWT ») qui surpasse systématiquement le rendement des éoliennes de l’art antérieur. Dans le mode de réalisation préféré, la MEWT du Demandeur comprend une technologie avancée de mélange d’écoulement, une technologie avancée d’éjecteur, des technologies d’aérodynamique de propulsion et d’avion et d’atténuation du bruit avancées de manière exceptionnelle pour améliorer dynamiquement par un fluide l’efficacité et le rendement opérationnels des éoliennes de l’art antérieur, de sorte que son rendement de fonctionnement surpasse systématiquement la limite de Betz. Le mode de réalisation de MEWT préféré du Demandeur comprend : une enveloppe de turbine dotée d’une admission évasée ; un anneau d'aubes de stator ; un anneau d'aubes rotatives (c à d une roue à aubes) aligné avec les aubes de stator ; et une pompe dotée d'un mélangeur/éjecteur pour augmenter le volume d'écoulement à travers la turbine tout en mélangeant rapidement l'écoulement de sortie de la turbine basse énergie avec un écoulement d’air de dérivation haute énergie. A la différence des mélangeurs et des éjecteurs de turbines à gaz qui se mélangent également avec des gaz d'échappement de partie centrale chaude, l'appareil préféré du Demandeur mélange seulement deux courants d'air (c’est-à-dire vents) : un courant d’air principal qui entraîne l'énergie en rotation et transfère celle-ci à la roue à aubes tout en traversant la turbine ; et un écoulement de dérivation d'énergie important ou courant d'air « secondaire » qui est entraîné dans l’éjecteur, où le courant d’air secondaire se mélange avec le courant d’air principal et transfère l’énergie à celui-ci. La MEWT est capable de produire deux ou trois fois l'énergie de ses homologues à extrémités libres pour la même zone frontale, et d’augmenter la productivité de parcs éoliens d'un facteur de deux ou plus. Cette MEWT est plus sûre et plus silencieuse, et permet en même temps d'offrir des options d'éoliennes améliorées pour les zones habitées.
PCT/US2008/011016 2007-03-23 2008-09-23 Eolienne dotée de mélangeurs et d’éjecteurs WO2010036216A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CN200880016922A CN101849102A (zh) 2008-09-23 2008-09-23 带有混合器和喷射器的风力涡轮机
KR1020097022229A KR20110044828A (ko) 2008-09-23 2008-09-23 믹서 및 이젝터를 가진 풍력 터빈
CA2679562A CA2679562A1 (fr) 2008-03-24 2008-09-23 Eolienne avec melangeurs et ejecteurs
EP08873518A EP2220365A1 (fr) 2008-09-23 2008-09-23 Eolienne dotée de mélangeurs et d éjecteurs
MX2009010236A MX2009010236A (es) 2007-03-23 2008-09-23 Turbina de viento con mezcladores.
AU2008362202A AU2008362202A1 (en) 2008-09-23 2008-09-23 Wind turbine with mixers and ejectors
PCT/US2008/011016 WO2010036216A1 (fr) 2008-09-23 2008-09-23 Eolienne dotée de mélangeurs et d’éjecteurs
JP2011527785A JP2012503731A (ja) 2008-09-23 2008-09-23 混合器と排出器とを有する風力タービン
BRPI0809257-5A BRPI0809257A2 (pt) 2007-03-23 2008-09-23 Turbina eólica com misturadores e ejetores
ZA2009/06650A ZA200906650B (en) 2007-03-23 2009-09-23 Wind turbine with mixers and ejectors
IL201144A IL201144A0 (en) 2007-03-23 2009-09-23 Wind turbine with mixers and ejectors

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Cited By (6)

* Cited by examiner, † Cited by third party
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WO2012068466A1 (fr) * 2010-11-19 2012-05-24 Flodesign Wind Turbine Corp. Turbines à fluide
WO2013043774A1 (fr) * 2011-09-21 2013-03-28 SkyWolf Wind Turbine Corp. Turbine éolienne à haut rendement ayant un écoulement d'air laminaire accru
US8721279B2 (en) 2011-04-27 2014-05-13 SkyWolf Wind Turbines Corp. Multiple mixing internal external fluid driven high efficiency wind turbine having reduced downstream pressure
US8851836B2 (en) 2011-04-27 2014-10-07 SkyWolf Wind Turbine Corp. High efficiency wind turbine including photovoltaic cells
US9322391B2 (en) 2011-04-27 2016-04-26 SkyWolf Wind Turbine Corp. Housing for a high efficiency wind turbine
US11248581B2 (en) 2017-10-20 2022-02-15 FlowGen Development & Management AG Flow energy installation, in particular encased wind turbine

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CN104454331A (zh) * 2014-12-04 2015-03-25 哈尔滨工业大学 一种低速风力双重引射混合器
CA2893119A1 (fr) * 2015-03-16 2016-09-16 Peter K. O'hagan Eolienne amelioree convenant a une installation sans tour d'eolienne
CN104791188A (zh) * 2015-05-04 2015-07-22 苏州常实工业设备有限公司 一种适用于高速公路上的自转向轴流型风力发电装置
CA2990499C (fr) * 2015-07-21 2022-09-13 G Lucio Tiago FIHO Turbine a ecoulement axial pour installations de faible hauteur
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JP7488604B2 (ja) * 2019-08-20 2024-05-22 マドリード、アルフレド ラウル カル 風壁
CN110803288A (zh) * 2019-10-25 2020-02-18 中航通飞研究院有限公司 一种座舱加温引射混合器
CN112539100B (zh) * 2020-11-27 2022-07-15 潍柴动力股份有限公司 一种发动机及涡轮增压器
CN115076025A (zh) * 2022-05-06 2022-09-20 吉林重通成飞新材料股份公司 一种钝尾缘宽运行雷诺数范围的风力机翼型族

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508752A (en) 1976-01-29 1978-04-26 Univ Ben Gurion Wind driven energy generating device
GB2013790A (en) 1978-01-30 1979-08-15 New Environment Energy Dev Apparatus for increasing the flow speed of a medium and for recovering its kinetic energy
EP0045202A1 (fr) 1980-07-26 1982-02-03 Timothy Michael Gilchrist Génératrices électriques entraînées par éoliennes
US5405008A (en) 1992-07-06 1995-04-11 Tdk Corporation Plastic case and method for making the same
US5464320A (en) 1993-06-02 1995-11-07 Finney; Clifton D. Superventuri power source
WO1997041351A1 (fr) 1996-04-30 1997-11-06 Mezhdunarodny Fond Konversii Procede de transformation de l'energie de flux d'air et dispositif de mise en oeuvre de ce procede
DE19626360A1 (de) 1996-07-01 1998-01-08 Johann Emanuel Dipl In Popescu Turbo-Windmühle mit variabler Luftdurchflußmenge, die die ganze Kraft des Windes nutzt und vervielfältigt die Windkraft
US5761900A (en) * 1995-10-11 1998-06-09 Stage Iii Technologies, L.C. Two-stage mixer ejector suppressor
EP1067286A1 (fr) 1998-03-25 2001-01-10 Igor Sergeevich Orlov Eolienne
WO2006065248A2 (fr) * 2004-12-17 2006-06-22 Composite Support & Solutions, Inc. Eolienne a accroissement de diffusion

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508752A (en) 1976-01-29 1978-04-26 Univ Ben Gurion Wind driven energy generating device
GB2013790A (en) 1978-01-30 1979-08-15 New Environment Energy Dev Apparatus for increasing the flow speed of a medium and for recovering its kinetic energy
EP0045202A1 (fr) 1980-07-26 1982-02-03 Timothy Michael Gilchrist Génératrices électriques entraînées par éoliennes
US5405008A (en) 1992-07-06 1995-04-11 Tdk Corporation Plastic case and method for making the same
US5464320A (en) 1993-06-02 1995-11-07 Finney; Clifton D. Superventuri power source
US5761900A (en) * 1995-10-11 1998-06-09 Stage Iii Technologies, L.C. Two-stage mixer ejector suppressor
WO1997041351A1 (fr) 1996-04-30 1997-11-06 Mezhdunarodny Fond Konversii Procede de transformation de l'energie de flux d'air et dispositif de mise en oeuvre de ce procede
DE19626360A1 (de) 1996-07-01 1998-01-08 Johann Emanuel Dipl In Popescu Turbo-Windmühle mit variabler Luftdurchflußmenge, die die ganze Kraft des Windes nutzt und vervielfältigt die Windkraft
EP1067286A1 (fr) 1998-03-25 2001-01-10 Igor Sergeevich Orlov Eolienne
WO2006065248A2 (fr) * 2004-12-17 2006-06-22 Composite Support & Solutions, Inc. Eolienne a accroissement de diffusion

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012068466A1 (fr) * 2010-11-19 2012-05-24 Flodesign Wind Turbine Corp. Turbines à fluide
US8672624B2 (en) 2011-04-27 2014-03-18 SkyWolf Wind Turbine Corp. High efficiency wind turbine having increased laminar airflow
US8721279B2 (en) 2011-04-27 2014-05-13 SkyWolf Wind Turbines Corp. Multiple mixing internal external fluid driven high efficiency wind turbine having reduced downstream pressure
US8851836B2 (en) 2011-04-27 2014-10-07 SkyWolf Wind Turbine Corp. High efficiency wind turbine including photovoltaic cells
US9322391B2 (en) 2011-04-27 2016-04-26 SkyWolf Wind Turbine Corp. Housing for a high efficiency wind turbine
WO2013043774A1 (fr) * 2011-09-21 2013-03-28 SkyWolf Wind Turbine Corp. Turbine éolienne à haut rendement ayant un écoulement d'air laminaire accru
US11248581B2 (en) 2017-10-20 2022-02-15 FlowGen Development & Management AG Flow energy installation, in particular encased wind turbine

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EP2220365A1 (fr) 2010-08-25
WO2010036216A8 (fr) 2010-06-03
JP2012503731A (ja) 2012-02-09
KR20110044828A (ko) 2011-05-02
CA2679562A1 (fr) 2010-03-23
AU2008362202A1 (en) 2010-04-01

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