GB2442540A - Simple vertical-axis wind turbine - Google Patents
Simple vertical-axis wind turbine Download PDFInfo
- Publication number
- GB2442540A GB2442540A GB0701185A GB0701185A GB2442540A GB 2442540 A GB2442540 A GB 2442540A GB 0701185 A GB0701185 A GB 0701185A GB 0701185 A GB0701185 A GB 0701185A GB 2442540 A GB2442540 A GB 2442540A
- Authority
- GB
- United Kingdom
- Prior art keywords
- turbine
- wind
- air
- wind turbine
- power
- 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- Withdrawn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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 235000012907 honey Nutrition 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 241000789082 Diachrysia chrysitis Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009182 swimming Effects 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
-
- 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
- F03D3/06—Rotors
- F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
-
- 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
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- F03D3/065—
-
- 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
- F05B2250/10—Geometry two-dimensional
- F05B2250/14—Geometry two-dimensional elliptical
-
- 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
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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The wind turbine has four aerofoil vanes fixed at 45 degrees on a turntable. The turbine cools the air but does not change its velocity. The design relies on minimum disturbance to air flow so the turbine should be mounted on the ground. The turbine is simple and robust for high reliability and cheapness of construction and maintenance costs. The generator may be a direct drive generator or alternator with lithium storage. A wind farm may have several rows of turbines.
Description
Vertical Wind Turbine
Description
This win turbine is a simple one just four vanes on a turntable. The vanes are set at an angle of 45 degrees to the diameter at that point. The vanes form an aerofoil that pulls the turntable round by creating a partial vacuum on the "top' surface of the vane like the wing of an aircraft. Like a glider the aspect ratio (height to width) l0:l and the aerofoil flat with rounded leading and trailing edges. The power it generates depends on the velocity of the air and the volume and density of air the turbine sweeps per second. The effect of the turbine is too coot the air but not change the velocity. As the blade moves through the air the angle the blade subtends to the wind changes as the vector sum of the wind velocity and the blade velocity, so Galilean relativity makes it appear to turn to be parallel to the wind as far as the flow of air is concerned. This makes 45 Degrees the best angle.
Power calculation The density of air is about 1.2 kg/m3 so if the turbine is 20 meters high and 20 meters in diameter (area 400 meters2 and if the velocity is I meter/second the volume swept per second is 400 m3 the mass is therefore 1.2 x 400 or 480 Kg. at I m sec the kinetic energy is (l/2)mv"2 or 240 Joule so the maximum power will be 240 watt. At 10 meters per second wind speed the kinetic energy will be 240x 100 watt or 24000 = 2.4 KW. The power goes up as the square of the linear dimension so if the size is 50 meters x 50 meters the area will be 2500 and with a wind speed of 10 meters per second the power will be 250KW. The material would be shiny like burnished brass or brushed aluminium so they glitter in the sun or green anodised aluminium for normal use. They could also be made from timber. The generator needs to be a fairly simple direct drive generator or alternator with lithium storage and regulators to give Continuous power. An inverter could be used to generate 250 volts AC.
Location The design relies on minimum disturbance to air flow so should be on the ground. The rotation speed will be the same as the wind speed.
Environment The wind downstream will be cooled by the sweeping and since 400 m'3 of air looses 240 Joule the temperature drop will be 400 m"3 x 1.2 kg/m3 x 100.35 i/Kg I K x delta T=240 Joule. So the drop in temperature will be 2401(400x1.2x100.35)=O.00049 K. This is caused by the drop of entropy as it passes through the turbine vanes.
Wind Farms For high powers several rows of turbines would not disturb the flow of air, they would just cool it down. a I degree drop of temperature will generate 400 x 1.2 x 100.35 Joutes = 48168 Joules this is for I mlsec wind speed so the power would be 48.168 KW for 2040 windmills in a column a farm of 2040x2040 would generate 98.262 MW. This would occupy a space of 25x2040x2040 meters 104.04 KmA2 that is with a meter separation between each mill for servicing. They could be made taller doubling the height would double the power. Since the power increases with the square of the wind speed the 10 meter/sec gives 100 times the power. So for this wind farm the power would be 9826.2 MW or for 40 meter tall turbines this comes to 19.652.4 OW. Note
The design has been around prior to the 20th century and dates back 8000 years as it is mentioned in ancient texts including the "Cuneiform Bible" where they were used along side the hanging gardens of Babylon creating a land "flowing with milk and honey". The water turbines lifted water in Archimedes spirals up to the high terraces and provided swimming in lotus water beds in a series of levels. The previous bucket brigade was operated by slaves but they kept falling of their ladders and died so King Nekabnezer used machines. The windmills provided power to lift water and replace treadmills. It was a source of wonder and the Jews wanted it so they invaded, but because the machines had no spirit so they broke the machines and they lost the milk and honey.
Claims (1)
- S -3--Claim * The turbine will work independently of wind direction andneeds no steering.* It is very cheap and simple to build.* The turbine will generate useful power over a broad range on wind speeds * Its simplicity means it will be reliable with low service costs
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0619498.9A GB0619498D0 (en) | 2006-10-02 | 2006-10-02 | Vertical wind turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
GB0701185D0 GB0701185D0 (en) | 2007-02-28 |
GB2442540A true GB2442540A (en) | 2008-04-09 |
Family
ID=37435143
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB0619498.9A Ceased GB0619498D0 (en) | 2006-10-02 | 2006-10-02 | Vertical wind turbine |
GB0701185A Withdrawn GB2442540A (en) | 2006-10-02 | 2007-01-16 | Simple vertical-axis wind turbine |
GB0701041A Withdrawn GB2442480A (en) | 2006-10-02 | 2007-01-19 | Vertical wind turbine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB0619498.9A Ceased GB0619498D0 (en) | 2006-10-02 | 2006-10-02 | Vertical wind turbine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0701041A Withdrawn GB2442480A (en) | 2006-10-02 | 2007-01-19 | Vertical wind turbine |
Country Status (1)
Country | Link |
---|---|
GB (3) | GB0619498D0 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104061124A (en) * | 2013-03-18 | 2014-09-24 | 李�杰 | Efficient high-wind-resistance vertical axis wind turbine without connecting rod |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0905506D0 (en) | 2009-03-31 | 2009-05-13 | Ind Brushware Ltd | Down hole cleaning tool |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US588572A (en) * | 1897-08-24 | Windmill | ||
DE892130C (en) * | 1951-08-03 | 1953-10-05 | Johann Dr-Ing Cassens | Wind engine |
US4260325A (en) * | 1979-11-07 | 1981-04-07 | Cymara Hermann K | Panemone wind turbine |
FR2492897A1 (en) * | 1980-08-05 | 1982-04-30 | Joly Michel | Drum shaped wind motor - has flat vertical deflector plates mounted on inside surface of vertical drum and set at angle to drum radius |
JP2004044479A (en) * | 2002-07-11 | 2004-02-12 | Wakamoto Seisakusho:Kk | Windmill for wind power generation |
US6870280B2 (en) * | 2002-05-08 | 2005-03-22 | Elcho R. Pechler | Vertical-axis wind turbine |
JP2006125378A (en) * | 2004-10-28 | 2006-05-18 | Itsuo Takehana | Vertical shaft type blade row impeller device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4318019A (en) * | 1980-05-09 | 1982-03-02 | Teasley Granvil E | Alternator for wind generator |
DE19623055A1 (en) * | 1996-06-10 | 1997-01-02 | Dieter Wehe | Wind power rotor in housing |
DE29702632U1 (en) * | 1997-02-15 | 1997-04-03 | Freimund, Wolfgang, 22179 Hamburg | Wind turbine with a vertical axis of rotation |
US6921986B2 (en) * | 2003-07-10 | 2005-07-26 | Creative Wind Power Solutions Inc. | Horizontal omni-directional windmill |
-
2006
- 2006-10-02 GB GBGB0619498.9A patent/GB0619498D0/en not_active Ceased
-
2007
- 2007-01-16 GB GB0701185A patent/GB2442540A/en not_active Withdrawn
- 2007-01-19 GB GB0701041A patent/GB2442480A/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US588572A (en) * | 1897-08-24 | Windmill | ||
DE892130C (en) * | 1951-08-03 | 1953-10-05 | Johann Dr-Ing Cassens | Wind engine |
US4260325A (en) * | 1979-11-07 | 1981-04-07 | Cymara Hermann K | Panemone wind turbine |
FR2492897A1 (en) * | 1980-08-05 | 1982-04-30 | Joly Michel | Drum shaped wind motor - has flat vertical deflector plates mounted on inside surface of vertical drum and set at angle to drum radius |
US6870280B2 (en) * | 2002-05-08 | 2005-03-22 | Elcho R. Pechler | Vertical-axis wind turbine |
JP2004044479A (en) * | 2002-07-11 | 2004-02-12 | Wakamoto Seisakusho:Kk | Windmill for wind power generation |
JP2006125378A (en) * | 2004-10-28 | 2006-05-18 | Itsuo Takehana | Vertical shaft type blade row impeller device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104061124A (en) * | 2013-03-18 | 2014-09-24 | 李�杰 | Efficient high-wind-resistance vertical axis wind turbine without connecting rod |
Also Published As
Publication number | Publication date |
---|---|
GB0701185D0 (en) | 2007-02-28 |
GB0701041D0 (en) | 2007-02-28 |
GB0619498D0 (en) | 2006-11-08 |
GB2442480A (en) | 2008-04-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |