GB2230565A - Axial flow wind turbine - Google Patents

Axial flow wind turbine Download PDF

Info

Publication number
GB2230565A
GB2230565A GB8901448A GB8901448A GB2230565A GB 2230565 A GB2230565 A GB 2230565A GB 8901448 A GB8901448 A GB 8901448A GB 8901448 A GB8901448 A GB 8901448A GB 2230565 A GB2230565 A GB 2230565A
Authority
GB
United Kingdom
Prior art keywords
axial flow
flow turbine
turbine
casing
aerofoil profile
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Withdrawn
Application number
GB8901448A
Other versions
GB8901448D0 (en
Inventor
Maher Louis Helmy
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 GB8901448A priority Critical patent/GB2230565A/en
Publication of GB8901448D0 publication Critical patent/GB8901448D0/en
Publication of GB2230565A publication Critical patent/GB2230565A/en
Withdrawn legal-status Critical Current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
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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

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)

Abstract

An axial flow wind turbine comprises a casing (a), stator blades (c), rotor blades (d) and electric generator casing (e). An annular disc portion (g) generates a low pressure downstream of the device as a result of air flowing outside the casing. <IMAGE>

Description

AXIAL FLOW TURBINE DESIGN FOR WIND POWER.
This invention relates to the use of axial flow turbine to harness wind energy.
Wind Energy Conversion Systems mainly include single-bladed, doublebladed, multibladed propeller type turbines, the Savonius turbine, the Darrieus turbine, and many other similar turbines.
According to the present invention the axial flow turbine is also to be used as a design to harness wind energy. This axial flow turbine is surrounded by a cylindrical casing and at its rear edge there is a wind barrier. The axial flow turbine is fixed on a central aerofoil profile.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows a cross sectional view; Figure 2 shows a general perpective view without outer casing.
Referring to the drawing the axial flow turbine comprises a casing for nozzle, turbine and diffuser (a) and at the rear end is a wind barrier building pressure drop (g) in the form of a. disc.
Air entering the casing (a) will face the central aerofoil profile which is the electric generator casing (e), then air will obtain a higher velocity and lower pressure. Next air will pass through the guide vanes (c) then will rotate the rotor blades (d). This rotating rotor will translate wind energy into usefultcinetic energy.
Air will then lose speed in the diffuser and gain some pressure to meet ambient air behind the casing (a) at the same pressure.
while air moving also parallel to the turbine axis but outside the casing (a) will face the wind barrier building pressure drop (g); and a pressure drop is set up behind the overall design.

Claims (2)

1 The use of axial flow turbine to harness energy from wind energy.
Axial flow turbine having a stage reaction of less than 100% or above.
The axial flow turbine comprises stable inlet guide vanes, rotating rotor blades, and surrounded by an outer casing.
2. A wind turbine constructed and arranged to operate substantially as described with reference to and as illustrated in the accompanying drawings.
2 The axial flow turbine as claimed in Claim 1 is fixed over a central aerofoil profile having a symmetrical cross section around the central axis of the turbine. The axial flow turbine is fixed at the maximum diajeter or t^.3-R aerofoil profile. In front of the axial flow turbine is a nose fairing shape, which is part of the aerofoil profile. A fairing lenOth/diameter ratio of 0.5 to 0.75.
3 The axial flow turbine as claimed in Claim 1 can be surrounded from outside its casing by a wind barrier building a pressure drop (Ap) behind it not more than 1.6 times the drag coefficient (CD) of the wind barrier times the velocity head of the incoming air (V2/2); i.e.tp/ - 1.6*CD*V/2. ( p is air density).
ALff2{2ff2fI- TO THE CLAIMS.
1. The use of axial flow turbine to harness wind energy. The axial flow turbine comprises stable inlet guide vanes, rotating rotor blades, and surrounded by an outer simple cylindrical casing, having no variation in thickness, this same cylindrical casing extend downwind side to form the diffuser wall.
This axial flow turbine is fixed over a central aerofoil profile having a symmetrical cross section around the central axis of the turbine. The axial flow turbine is fixed at the maximum diameter of the aerofoil profile. The central aerofoil profile can be used as a casing for an elactric generator.
The axial flow turbine is surrounded from outside its casing by a wind barrier, taking the shape of a disc, which is perpendicular to the axis of the axial flow turbine, and building a pressure drop behind it.
The overall design of the axial flow turbine depend on the pressure drop offered by the wind barrier to the flow of air moving parallel to the turbine axis but outside turbine casing.
GB8901448A 1989-01-24 1989-01-24 Axial flow wind turbine Withdrawn GB2230565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8901448A GB2230565A (en) 1989-01-24 1989-01-24 Axial flow wind turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8901448A GB2230565A (en) 1989-01-24 1989-01-24 Axial flow wind turbine

Publications (2)

Publication Number Publication Date
GB8901448D0 GB8901448D0 (en) 1989-03-15
GB2230565A true GB2230565A (en) 1990-10-24

Family

ID=10650467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8901448A Withdrawn GB2230565A (en) 1989-01-24 1989-01-24 Axial flow wind turbine

Country Status (1)

Country Link
GB (1) GB2230565A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034383A1 (en) * 1990-10-29 1992-04-30 Behnke Klaus Wind turbine functioning in accordance with turbine theory - achieves spin-free flow behind running equipment
EP1489298A1 (en) * 2002-03-22 2004-12-22 Kyushu Tlo Company, Limited Wind power generator
US6841892B1 (en) * 1999-05-12 2005-01-11 Compagnie Internationale De Turbines Atmospheriques Wind machine with slanted blades
WO2006007568A1 (en) * 2004-07-01 2006-01-19 Richter Donald L Laminar air turbine
EP1640605A1 (en) * 2003-06-12 2006-03-29 Ryukyu Electric Power Co., Ltd. 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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829100A (en) * 1956-01-17 1960-02-24 Plessey Co Ltd Improvements relating to ram air turbine driven auxiliary power generators
GB1450348A (en) * 1973-10-11 1976-09-22 Gronager J Windturbine
GB1504911A (en) * 1975-12-29 1978-03-22 Mclatchy F Multi-unit wind-operated generator
GB1508752A (en) * 1976-01-29 1978-04-26 Univ Ben Gurion Wind driven energy generating device
GB1539566A (en) * 1975-07-10 1979-01-31 Eckel O Wind turbine
US4204799A (en) * 1978-07-24 1980-05-27 Geus Arie M De Horizontal wind powered reaction turbine electrical generator
EP0045264A2 (en) * 1980-07-29 1982-02-03 Megatec - Industrie Wind driven electric generator
US4411588A (en) * 1978-04-28 1983-10-25 Walter E. Currah Wind driven power plant
US4482290A (en) * 1983-03-02 1984-11-13 The United States Of America As Represented By The United States Department Of Energy Diffuser for augmenting a wind turbine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829100A (en) * 1956-01-17 1960-02-24 Plessey Co Ltd Improvements relating to ram air turbine driven auxiliary power generators
GB1450348A (en) * 1973-10-11 1976-09-22 Gronager J Windturbine
GB1539566A (en) * 1975-07-10 1979-01-31 Eckel O Wind turbine
GB1504911A (en) * 1975-12-29 1978-03-22 Mclatchy F Multi-unit wind-operated generator
GB1508752A (en) * 1976-01-29 1978-04-26 Univ Ben Gurion Wind driven energy generating device
US4411588A (en) * 1978-04-28 1983-10-25 Walter E. Currah Wind driven power plant
US4204799A (en) * 1978-07-24 1980-05-27 Geus Arie M De Horizontal wind powered reaction turbine electrical generator
EP0045264A2 (en) * 1980-07-29 1982-02-03 Megatec - Industrie Wind driven electric generator
US4482290A (en) * 1983-03-02 1984-11-13 The United States Of America As Represented By The United States Department Of Energy Diffuser for augmenting a wind turbine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034383A1 (en) * 1990-10-29 1992-04-30 Behnke Klaus Wind turbine functioning in accordance with turbine theory - achieves spin-free flow behind running equipment
US6841892B1 (en) * 1999-05-12 2005-01-11 Compagnie Internationale De Turbines Atmospheriques Wind machine with slanted blades
EP1489298A1 (en) * 2002-03-22 2004-12-22 Kyushu Tlo Company, Limited Wind power generator
EP1489298A4 (en) * 2002-03-22 2005-06-08 Kyushu Tlo Co Ltd Wind power generator
EP1640605A1 (en) * 2003-06-12 2006-03-29 Ryukyu Electric Power Co., Ltd. Wind power generator
EP1640605A4 (en) * 2003-06-12 2010-04-07 Ryukyu Electric Power Co Ltd Wind power generator
WO2006007568A1 (en) * 2004-07-01 2006-01-19 Richter Donald L Laminar air turbine
US7214029B2 (en) 2004-07-01 2007-05-08 Richter Donald L Laminar air turbine
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

Also Published As

Publication number Publication date
GB8901448D0 (en) 1989-03-15

Similar Documents

Publication Publication Date Title
US4320304A (en) Apparatus for increasing the flow speed of a medium and for recovering its kinetic energy
JP5289770B2 (en) Omnidirectional wind turbine
US4205943A (en) Hydro-electric generator
US4781523A (en) Fluid energy turbine
US4411588A (en) Wind driven power plant
US4132499A (en) Wind driven energy generating device
US4204799A (en) Horizontal wind powered reaction turbine electrical generator
US4915580A (en) Wind turbine runner impulse type
US4087196A (en) Apparatus for deriving energy from moving gas streams
US4143992A (en) Wind operated power generator
US7980811B2 (en) Turbine with mixers and ejectors
WO2006007568A1 (en) Laminar air turbine
US20100316493A1 (en) Turbine with mixers and ejectors
US6053700A (en) Ducted turbine
HUT66089A (en) Process and installation for producing useable energy from parallel flows
US4427343A (en) Efficient wind turbine design for low velocity air flow
GB2230565A (en) Axial flow wind turbine
WO2006126001A1 (en) Energy conversion turbine unit
US20130287543A1 (en) Down wind fluid turbine
Lewis et al. A theory and experimental investigation of ducted wind turbines
RU2231679C2 (en) Windmill electric generating plant
RU2098657C1 (en) Windmill
KR20140123324A (en) Ventilation Duct Exhaust Energy Capturing Power Generation System
RU2118704C1 (en) Windmill
CA1294220C (en) Wind turbine

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)