GB1450348A - Windturbine - Google Patents

Windturbine

Info

Publication number
GB1450348A
GB1450348A GB4402074A GB4402074A GB1450348A GB 1450348 A GB1450348 A GB 1450348A GB 4402074 A GB4402074 A GB 4402074A GB 4402074 A GB4402074 A GB 4402074A GB 1450348 A GB1450348 A GB 1450348A
Authority
GB
United Kingdom
Prior art keywords
range
shroud
lying
rotor
wind
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.)
Expired
Application number
GB4402074A
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
Publication of GB1450348A publication Critical patent/GB1450348A/en
Expired legal-status Critical Current

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
    • 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
    • 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
    • F05B2200/00—Mathematical features
    • F05B2200/20—Special functions
    • F05B2200/22—Power
    • F05B2200/221—Square power
    • 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
    • F05B2250/00—Geometry
    • F05B2250/50—Inlet or outlet
    • F05B2250/501—Inlet
    • F05B2250/5011—Inlet augmenting, i.e. with intercepting fluid flow cross sectional area greater than the rest of the machine behind the inlet
    • 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

1450348 Wind motors J GRONAGER 10 Oct 1974 [11 Oct 1973] 44020/74 Heading FIT A wind motor comprises a bladed rotor 2 on a centrebody 4 and surrounded by a shroud 5, the ratio of the shroud inlet opening to its outlet opening lying in the range 0À55 to 1À2, the ratio of the area swept by the rotor to the shroud outlet opening lying in the range 0À1 to 0À8, the opening angle of the shroud outlet from the rotor lying in the range 8 to 80 degrees, the ratio of the mean velocity through the rotor to the initial wind velocity lying in the range 1À5 to 8, and the mean drop of pressure across the rotor lying in the range 0À1 to 0À4 Newton per square metre per unit initial wind velocity squared. The opening angle of the shroud outlet preferably lies in the range 8 to 24 degrees, and, to avoid boundary layer separation in short shrouds, some wind power may be used to suck the boundary layer out of the outlet. The shroud and centrebody may be partially filled with a gas lighter than air so that, when the wind motor is placed on top of a high tower, any deflection of the tower due to the drag force will be opposed by the torque due to such buoyancy. Specific dimensions and performance figures are given for a practical embodiment.
GB4402074A 1973-10-11 1974-10-10 Windturbine Expired GB1450348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK195773 1973-10-11

Publications (1)

Publication Number Publication Date
GB1450348A true GB1450348A (en) 1976-09-22

Family

ID=8109140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4402074A Expired GB1450348A (en) 1973-10-11 1974-10-10 Windturbine

Country Status (1)

Country Link
GB (1) GB1450348A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422047A2 (en) * 1977-05-02 1979-11-02 Guerin Georges Wind driven power generator - has turbine arranged for axial flow with impeller and stator blades which can pivot to form inlet damper
GB2230565A (en) * 1989-01-24 1990-10-24 Maher Louis Helmy Axial flow wind turbine
WO1997041351A1 (en) * 1996-04-30 1997-11-06 Mezhdunarodny Fond Konversii Method for converting air-flow energy and device for realising the same
GB2359594A (en) * 2000-02-26 2001-08-29 Leonard Thomas Vaughan Duct for wind-powered generator
US6756696B2 (en) * 2002-03-22 2004-06-29 Kyusho Tlo Company, Limited Wind power generator
US8794903B2 (en) 2006-12-21 2014-08-05 Green Energy Technologies, Llc Shrouded wind turbine system with yaw control
US9194362B2 (en) 2006-12-21 2015-11-24 Green Energy Technologies, Llc Wind turbine shroud and wind turbine system using the shroud

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422047A2 (en) * 1977-05-02 1979-11-02 Guerin Georges Wind driven power generator - has turbine arranged for axial flow with impeller and stator blades which can pivot to form inlet damper
GB2230565A (en) * 1989-01-24 1990-10-24 Maher Louis Helmy Axial flow wind turbine
WO1997041351A1 (en) * 1996-04-30 1997-11-06 Mezhdunarodny Fond Konversii Method for converting air-flow energy and device for realising the same
GB2359594A (en) * 2000-02-26 2001-08-29 Leonard Thomas Vaughan Duct for wind-powered generator
GB2359594B (en) * 2000-02-26 2002-02-13 Leonard Thomas Vaughan Wind-powered generating device having a convergent duct
US6756696B2 (en) * 2002-03-22 2004-06-29 Kyusho Tlo Company, Limited Wind power generator
US8794903B2 (en) 2006-12-21 2014-08-05 Green Energy Technologies, Llc Shrouded wind turbine system with yaw control
US9194362B2 (en) 2006-12-21 2015-11-24 Green Energy Technologies, Llc Wind turbine shroud and wind turbine system using the shroud

Similar Documents

Publication Publication Date Title
EP0948716B1 (en) Ocean wave energy extraction
AU746011B2 (en) Extracting power from moving water
US4648801A (en) Wind turbines
IE45839L (en) Fluid driven rotary transducer
JPS5770957A (en) Wave power generator driven by wells turbine
GB1450348A (en) Windturbine
GB1500400A (en) Conversion of the dynamic energy of sea waves to motive power
US5484257A (en) Wind energy device
US3717163A (en) Precompression shroud for inlets
GB2028929A (en) Turbines
GB2443635A (en) Roof mounted wind turbine
GB1449740A (en) Apparatus for converting sea wave energy into electrical energy
JPS578368A (en) Power generation due to wind force
JPS5781191A (en) Method and device of improving characteristic of blower or the like
JPS5746068A (en) Generator and driving device for generator of fluid rotary disc type by use of either wind force or wave force
Lieblein et al. Performance characteristics of a model VTOL lift fan in crossflow.
FR2325822A1 (en) High efficiency wind energy converter - has shaped vanes to reduce drag and barrier to shield vanes during contra flow
CA2574781C (en) Ocean wave energy extraction
WO1992015782A1 (en) Apparatus for recovering kinetic energy in a free flowing water stream
Maki et al. Aerodynamics of a fan-in-fuselage model
CN206035729U (en) Wind energy gas compressor fan blade safe operation automatic safety device
Fradin The effect of the rotational speed of a vaneless diffuser on the performance of a centrifugal compressor
JPS5744792A (en) Torque flow pump
JPH0478801B2 (en)
JPH0689645B2 (en) Wave Power Generator Using Symmetrical Wing Type Biplane Wells Turbine with Mounting Angle

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee