US20110085898A1 - Vertical axis turbine foils - Google Patents

Vertical axis turbine foils Download PDF

Info

Publication number
US20110085898A1
US20110085898A1 US12/995,674 US99567409A US2011085898A1 US 20110085898 A1 US20110085898 A1 US 20110085898A1 US 99567409 A US99567409 A US 99567409A US 2011085898 A1 US2011085898 A1 US 2011085898A1
Authority
US
United States
Prior art keywords
turbine
fdd
blades
vertical axis
foil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/995,674
Other languages
English (en)
Inventor
Daniel Farb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US12/995,674 priority Critical patent/US20110085898A1/en
Publication of US20110085898A1 publication Critical patent/US20110085898A1/en
Assigned to DR. MARK FRIEDMAN LTD. reassignment DR. MARK FRIEDMAN LTD. SECURITY AGREEMENT Assignors: FARB, DANIEL
Assigned to FARB, DANIEL reassignment FARB, DANIEL RELEASE OF SECURITY INTEREST Assignors: DR. MARK FRIEDMAN LTD.
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F03D3/0427—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels with converging inlets, i.e. the guiding means intercepting an area greater than the effective rotor area
    • 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
    • F05B2250/70—Shape
    • F05B2250/71—Shape curved
    • 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 relates to the use of foils with vertical axis turbines (VAWT). Although their main use is likely to be with wind, the inventions apply to any kind of fluid flow.
  • VAWT vertical axis turbines
  • FIG. 3 is a diagram of fluid flow in Case 15
  • FIG. 4 is a diagram of fluid flow in Case 12 .
  • VAWT is an abbreviation for Vertical Axis Wind Turbine. It refers here to such a turbine in any flow of fluid. It may be this type even in a horizontal orientation.
  • the term “fluid” refers to gas or liquid, and any reference to fluid refers to both unless otherwise stated.
  • a WDD is a Wind Deflection Device and an FDD is a Flow Deflection Device; they are substantially synonymous with the terms “foil” or “airfoil” as all the above refer to aerodynamic objects that change the flow of a fluid.
  • An FDD or WDD is a broader term because it may refer to partial outline foils that are incomplete. A foil is functionally adjacent to the turbine if it is effective in changing the power output.
  • VAWT foil The principles and operation of a VAWT foil according to the present invention may be better understood with reference to the drawings and the accompanying description.
  • FIG. 1 illustrates a VAWT with a stand and shaft ( 1 ) and the location of the turbine blades ( 2 ).
  • a vertical axis turbine may be made with at least one foil set that is convex to the upstream flow of fluid into the turbine and superior or inferior to the turbine or both as per FIG. 1 .
  • a lower, convex foil is added in the vicinity of the blades. Said foil may or may not be connected to the turbine's body.
  • the unique additional point is that the foil or foils ( 3 , 5 ) are convex to the oncoming wind and located above and/or below the blades ( 2 ). If an upper foil is present, it may be supported by at least one pole ( 4 ).
  • a convex foil forms a ring around the shaft. In one embodiment this may be used for wind and in another for water.
  • the models here use a C foil as the intermediate foil shape.
  • the body of the foil is a “C” foil, which was illustrated in a previous patent as a line drawn through the following relative coordinate points in an x-y axis in any proportional size and any angle of attack, wherein at least one point can vary by an absolute amount of 10% of the chord length: X, Y; 1.732050808, 1; 1.693643087, 0.874364124; 1.646368289, 0.761206475; 1.542617362, 0.546668353; 1.427110653, 0.347651841; 1.29972529, 0.165009761; 1.159575723, 0.000955932; 1.004940323, ⁇ 0.140607698; 0.824000258, ⁇ 0.251170312; 0.72335477, ⁇ 0.288447214; 0.614950141, ⁇ 0.310804889; 0.497740627, ⁇ 0.315152056; 0.369386895,
  • FIG. 3 which illustrates the wind flow by arrows in case 15 , a low-power geometry
  • ( 17 ) represents the upstream foil and ( 18 ) the downstream area on the opposite side of a ringed foil shape.
  • the highest part of the bar represents the greatest amount of velocity and percentage increase in power output.
  • ( 19 ) in the center shows areas of vortices.
  • FIG. 4 in contrast, illustrates Case 12 , with ( 20 ) being the upstream area and ( 21 ) the downstream area. Area ( 22 ) in the center illustrates a lack of vortices because there is sufficient space to channel the fluid out of the enclosure without vortices.
  • the geometry of case 15 is as follows:
  • the present invention successfully addresses the shortcomings of the presently known configurations by providing a series of optimal foil/vertical axis turbine configurations.
  • the FDD is inferior and superior to the turbine's blades.
  • the FDD is not connected to the body of the turbine.
  • system further comprises
  • the FDD is functionally adjacent to a vertical axis turbine.
  • system further comprises additional parameters of the FDD according to cases in the following table, with a margin of error of 10% of the value of chord length, Din, or angle of attack, in any proportional size, or of the H 1 or H 2 parameters by a margin of 10% of the chord of the foil in any proportional size, for any one, two, three, four, or five of the parameters in the columns below:

Landscapes

  • 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)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
US12/995,674 2008-06-03 2009-05-27 Vertical axis turbine foils Abandoned US20110085898A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/995,674 US20110085898A1 (en) 2008-06-03 2009-05-27 Vertical axis turbine foils

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US5823508P 2008-06-03 2008-06-03
US8991408P 2008-08-19 2008-08-19
PCT/IB2009/052235 WO2009147589A2 (fr) 2008-06-03 2009-05-27 Plans profilés pour turbine à axe vertical
US12/995,674 US20110085898A1 (en) 2008-06-03 2009-05-27 Vertical axis turbine foils

Publications (1)

Publication Number Publication Date
US20110085898A1 true US20110085898A1 (en) 2011-04-14

Family

ID=41398619

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/995,674 Abandoned US20110085898A1 (en) 2008-06-03 2009-05-27 Vertical axis turbine foils

Country Status (3)

Country Link
US (1) US20110085898A1 (fr)
AU (1) AU2009254807A1 (fr)
WO (1) WO2009147589A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116541995B (zh) * 2023-07-05 2023-09-15 北京航空航天大学 一种多级压气机的全几何空间参数化变形方法及系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938907A (en) * 1974-06-24 1976-02-17 Windsunwatt, Inc. Horizontal multidirectional turbine windmill
US3944840A (en) * 1974-08-07 1976-03-16 Troll John H Wind power conversion system
US4021140A (en) * 1974-11-12 1977-05-03 Weisbrich Alfred L Variable geometry windturbine
US4162410A (en) * 1977-11-30 1979-07-24 Amick James L Vertical-axis windmill
US4652206A (en) * 1985-03-29 1987-03-24 Yeoman David R Wind turbine
US5380149A (en) * 1990-05-31 1995-01-10 Valsamidis; Michael Wind turbine cross wind machine
US5852331A (en) * 1996-06-21 1998-12-22 Giorgini; Roberto Wind turbine booster
US6688842B2 (en) * 2002-06-24 2004-02-10 Bruce E. Boatner Vertical axis wind engine
US20070296219A1 (en) * 2005-02-28 2007-12-27 Horia Nica Boundary Layer Wind Turbine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2349443C (fr) * 2001-06-01 2012-08-21 Compagnie De Gestion Optilog Inc. Conception d'une eolienne
EP2044462A4 (fr) * 2006-07-20 2012-06-13 Daniel Farb Procede et dispositifs de deviation d'ecoulement s'appliquant a des machines de captage de l'energie

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938907A (en) * 1974-06-24 1976-02-17 Windsunwatt, Inc. Horizontal multidirectional turbine windmill
US3944840A (en) * 1974-08-07 1976-03-16 Troll John H Wind power conversion system
US4021140A (en) * 1974-11-12 1977-05-03 Weisbrich Alfred L Variable geometry windturbine
US4162410A (en) * 1977-11-30 1979-07-24 Amick James L Vertical-axis windmill
US4652206A (en) * 1985-03-29 1987-03-24 Yeoman David R Wind turbine
US5380149A (en) * 1990-05-31 1995-01-10 Valsamidis; Michael Wind turbine cross wind machine
US5852331A (en) * 1996-06-21 1998-12-22 Giorgini; Roberto Wind turbine booster
US6688842B2 (en) * 2002-06-24 2004-02-10 Bruce E. Boatner Vertical axis wind engine
US20070296219A1 (en) * 2005-02-28 2007-12-27 Horia Nica Boundary Layer Wind Turbine

Also Published As

Publication number Publication date
WO2009147589A3 (fr) 2010-03-18
AU2009254807A1 (en) 2009-12-10
WO2009147589A4 (fr) 2010-05-06
WO2009147589A2 (fr) 2009-12-10

Similar Documents

Publication Publication Date Title
US8167533B2 (en) Wind energy system
AU2010252559B2 (en) Two-bladed vertical axis wind turbines
CA2492385C (fr) Assemblage de collecteurs d'energie par ecoulement, tel qu'un parc d'eoliennes, et procede de fonctionnement
Sengupta et al. Comparison of low wind speed aerodynamics of unsymmetrical blade H-Darrieus rotors-blade camber and curvature signatures for performance improvement
Zanforlin et al. Improving the performance of wind turbines in urban environment by integrating the action of a diffuser with the aerodynamics of the rooftops
CA2656795A1 (fr) Procede et dispositifs de deviation d'ecoulement s'appliquant a des machines de captage de l'energie
Roy et al. Numerical investigation to assess an optimal blade profile for the drag based vertical axis wind turbine
CN106919731A (zh) 一种用于不同风向角的风电机组尾流确定方法
US20120020788A1 (en) Wind energy system
Mendoza et al. Improving farm efficiency of interacting vertical‐axis wind turbines through wake deflection using pitched struts
Tong et al. Innovative Power‐Augmentation‐Guide‐Vane Design of Wind‐Solar Hybrid Renewable Energy Harvester for Urban High Rise Application
US20110085898A1 (en) Vertical axis turbine foils
Lu et al. Aerodynamic performance improvements for a Savonius turbine above a forward-facing step via inclined solar panel: A computational study
CN105545583B (zh) 风力发电叶片及背风面出流切线倾角的确定方法
Li et al. Effect of building diffusers on aerodynamic performance for building augmented vertical axis wind turbine
WO2020216965A1 (fr) Éolienne dotée de système de guidage du vent avec moyens de réduction de charge
CN108167124A (zh) 一种单轴双式风力发电设备
Diao Research and Application for a New Floating Type of Straight-Bladed Darrieus Vertical Axis Wind Turbine
CN105545584B (zh) 风力发电叶片及迎风面出流切线倾角的确定方法
US20100310355A1 (en) Moving vertical axis turbine foil
US20110182739A1 (en) Vertical axis turbine hybrid blades
Wilhelm et al. Performance Predictions of a Circulation Controlled-Vertical Axis Wind Turbine with Solidity Control
Gwani Design and testing of a novel building integrated cross axis wind turbine/Gwani Mohammed
Mohammed Design and Testing of a Novel Building Integrated Cross Axis Wind Turbine
JPS6235080A (ja) 採風装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: DR. MARK FRIEDMAN LTD., ISRAEL

Free format text: SECURITY AGREEMENT;ASSIGNOR:FARB, DANIEL;REEL/FRAME:029432/0994

Effective date: 20121209

AS Assignment

Owner name: FARB, DANIEL, ISRAEL

Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:DR. MARK FRIEDMAN LTD.;REEL/FRAME:033188/0807

Effective date: 20140614

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION