Wind turbine design - Factbites

Wind turbine design - Factbites
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Topic: Wind turbine design

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	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		170602 -- Wind Energy Engineering-- Turbine Design & Operation; ;DARRIEUS ROTORS-- AERODYNAMICS;TURBINE BLADES-- AERODYNAMICS; AIRFOILS;ASPECT RATIO;CALCULATION METHODS;DESIGN;PERFORMANCE;POWER COEFFICIENT;VERTICAL AXIS TURBINES
		Energy Citations Database (ECD) Document #5345760 - Darrieus wind-turbine airfoil configurations
		Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=5345760 (75 words)

	The Wind Turbine Company
		Our goal has always been to produce a utility-scale wind turbine that does not need subsidies in order to compete in electricity markets.
		However, this growth has been achieved with wind turbine technology that has required subsidization.
		To date, we have focused on mechanical hardware and the turbine's control system, improving our understanding of the operating characteristics and fatigue load reduction potential of our proprietary flapping-hinged rotor design.
	www.windturbinecompany.com (308 words)

	Alton's Wind Turbine Page
		But most small wind turbine builders will not opt for such a complication in the design, because the payback at small scales is not great enough.
		Certainly the core of an alternator winding qualifies for this; the whole idea is to rapidly change the polarity of the magnetism at one end (or both) of the coil, and of course the core is the main conduit for this magnetism.
		High winds are great; low winds mean that you'll need a larger prop, since the larger the prop, the lower the windspeed it will work well with.
	www.alton-moore.net /wind_turbines.html (7543 words)

	IBEW Local 103 - Turbine
		For the past eight months, under the leadership of Business Agent Marty Aikens, Local 103 has been working to design and permit a 100 k/W Wind Turbine to be located on our Freeport Street property.
		Again, the emergence of wind energy, like solar and other renewable sources, is not a “fad” destined to fade off and eventually bow to more traditional energy sources.
		From Solar to Wind and everything in between, Marty has thrown himself into these emerging markets for the good of the union and has truly become a leader in the future of renewable energy in Massachusetts.
	www.ibew103.com /turbine.html (658 words)

	Darrieus turbine
		The Darrieus turbine has long, thin blades in the shape of loops connected to the top and bottom of the axle; it is often called an "eggbeater windmill." It is named after the French engineer Georges Darrieus who patented the design in 1931.
		One of the two main types of vertical-axis wind turbine; the other is the Savonius turbine.
		The Darrieus turbine is characterised by its C-shaped rotor blades which give it its eggbeater appearance.
	www.daviddarling.info /encyclopedia/D/AE_Darrieus_machine.html (187 words)

	Wind Turbine Design Notes
		A compilation of e-mail chat about small wind turbines
		BWEA site about building your own wind turbine
		Picture showing the variation of size and twist
	users.aber.ac.uk /iri/WIND/TECH/WPcourse (234 words)

	Self-Starting Darrieus Wind Turbine
		The turbine must then be hooked into a power grid, thereby greatly increasing the complexity of the design, and limiting the use in remote areas, such as offshore.
		The main problem with the Darrieus turbines is that, since they are driven by lift forces, it must be brought to a minimum speed before the forces generated are sufficient to propel the turbine.
		When the turbine gets up to speed, these sails would have to decouple, and the idea was proposed that the pointed face could be hinged, allowing the sail to fold into the shaft, thereby covering less area.
	www.me.dal.ca /~dp_03_7/designselection.htm (1065 words)

	12mar04.htm
		wind turbine is “second generation” VAWT technology, based on the Darrieus Wind Turbine design that was tested and refined at Sandia National Laboratory.
		Community Energy is a wind energy marketing and development company that is active in the eastern U.S. Brent joined CEI in 2001 and manages wind energy supply, new partnerships with retail suppliers, and regulatory issues.
		In 1996 he founded McKenzie Bay and since 1997 has devoted full time to the development of the Company.
	www.ceepinc.org /Events/2004/nyeef/12mar04.htm (1094 words)

	junemech.htm
		Experimental investigation of the best design parameters of Banki wind turbines is conducted.
		Key Words: Wind Energy, Wind Turbines, Banki Turbine, Optimum design.
		Results are presented for various tip speed ratios, Reynolds number, and height to width ratio, with and without guiding vanes.
	www.mans.eun.eg /faceng/FacMag/junemech.htm (94 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		170602 -- Wind Energy Engineering-- Turbine Design & Operation; ;WIND TURBINES-- DESIGN; ELECTRIC GENERATORS;KINETIC ENERGY;TURBINE BLADES;WIND POWER
		Wind powered generator with gravity assisted mechanical advantage booster
		Energy Citations Database (ECD) Document #5516809 - Wind powered generator with gravity assisted mechanical advantage booster
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=5516809 (94 words)

	~chaudhur
		Chaudhuri, "Design and Analysis of Pultruded Composite Bearingless Rotors for a 80 KW Wind Turbine," Compositek Engineering Corporation Report, September, 1983.
		-Managed approximately $ 1 million project from Dynergy Corp; Also performed design and analysis of pultruded composite rotor for an 80 kw wind turbine for the same project ; FRP missile launch tubes under impulsive pressure loading, graphite/epoxy sprocket carrier using NASTRAN, and steel -graphite / epoxy torsion bar.
		Seide and R. Chaudhuri, "Finite Element Analysis of Laminated Plates and Shells with Shear Deformation," NASA Report, 1983.
	www.eng.utah.edu /~chaudhur (94 words)

	ipedia.com: Pumped storage hydroelectricity Article
		Reversible turbine/generator assemblies act as pump and turbine (usually a francis turbine design).
		A new concept is wind-pumped water storage where vagaries in wind power can be leveled by using the wind power to fill a reservoir and generating grid power from the reservoir turbines.
		When there is higher demand, water is released back into the lower reservoir through a turbine, generating hydroelectricity.
	www.ipedia.com /pumped_storage_hydroelectricity.html (492 words)

	Kurt H. Hohenemser, Ph.D.
		He applied the principles of helicopter rotors to the design of a research wind turbine, erected at the Washington University Tyson Research Center, where he continues to collect operational wind turbine data.
		He later became active in the research and development of wind turbines.
		He is an honorary Fellow of the American Helicopter Society and Associate Fellow of the American Institute of Aeronautics and Astronautics.
	www.jracademy.com /FellowsPictures/fellowspages/hohenemser.html (492 words)

	ipedia.com: Pumped storage hydroelectricity Article
		A new concept is wind-pumped water storage where vagaries in wind power can be leveled by using the wind power to fill a reservoir and generating grid power from the reservoir turbines.
		Reversible turbine/generator assemblies act as pump and turbine (usually a francis turbine design).
		When there is higher demand, water is released back into the lower reservoir through a turbine, generating hydroelectricity.
	www.ipedia.com /pumped_storage_hydroelectricity.html (492 words)

	Sandia National Laboratories: Wind Energy Technology
		We are concentrating on the aerodynamic and structural design of wind turbine blades.
		Sandia National Laboratories conducts applied wind energy research in several areas to increase the viability of wind technology by improving wind turbine performance and reducing their cost.
		Under the Long-term Inflow and Structural Test (LIST) program we also study how rare atmospheric events can impact the long-term structural integrity of wind turbines and how advanced data handling techniques can be successfully applied to the difficult field environment of operating wind turbines.
	www.sandia.gov /wind (263 words)

	Crescent Wind Generator
		A whole network of these generators would blend into the landscape a lot more effectively than the more conventional wind turbine designs, currently in widespread use.
		Illustrated on the right is our artists impression of how the Crescent Wind Turbine Generator might be sited, to blend in with the landscape, in this instance, it might be positioned down the central reservation of a motorway or duel carriageway, obviously in areas, which might be naturally exposed to winds.
		Alternatively, the design might be adapted for use underwater, in areas of strong or constant current.
	www.rainbowtradingpost.co.uk /crescent_gen.html (135 words)

	Sandia National Laboratories - Wind Energy Technology
		We are concentrating on the aerodynamic and structural design of wind turbine blades.
		Sandia National Laboratories conducts applied wind energy research in several areas to increase the viability of wind technology by improving wind turbine performance and reducing their cost.
		Under the Long-term Inflow and Structural Test (LIST) program we also study how rare atmospheric events can impact the long-term structural integrity of wind turbines and how advanced data handling techniques can be successfully applied to the difficult field environment of operating wind turbines.
	www.sandia.gov /wind (252 words)

	Sandia National Laboratories: Wind Energy Technology
		We are concentrating on the aerodynamic and structural design of wind turbine blades.
		Sandia National Laboratories conducts applied wind energy research in several areas to increase the viability of wind technology by improving wind turbine performance and reducing their cost.
		Under the Long-term Inflow and Structural Test (LIST) program we also study how rare atmospheric events can impact the long-term structural integrity of wind turbines and how advanced data handling techniques can be successfully applied to the difficult field environment of operating wind turbines.
	www.sandia.gov /wind (263 words)

	The educational encyclopedia, physics, hydro energy, solar energy, wind energy, power plants, Water wheels
		Information on renewable energy solar power cars, wind power, wind turbine, water turbine,
		Environmental design engineering Jacobs design, Savonius rotor, Darrieus eggbeater, shrouded windmills, blade loads, Yaw control, hydro plants, photovoltaic power generation, fuel cells technology
	users.telenet.be /educypedia/education/physicsenergyren.htm (263 words)

	Renewable Energy Annual 1996
		The Utility Wind Turbine Performance Verification Program was started in 1992 by DOE and EPRI to accelerate the commercialization of wind power.
		The reliability of wind turbines has increased from 60 percent availability for machines built in the early 1980s to approximately 98 percent for the newest turbine models [101].
		Productivity of turbines, as measured by annual generation per unit area swept by the rotor blades, has risen from 500 kilowatthours per year per square meter to 800 (the average for California’s turbines) [102].
	www.eia.doe.gov /cneaf/solar.renewables/renewable.energy.annual/chap05.html (3251 words)

	NEJ Abstracts
		The main objective of ship structural design is to ensure safety and functional performance requirements of a structural system for target reliability levels, for a specified period of time, and for a specified environment.
		Omri Pedatzur, IN Particulate impurities in the air intake are an important factor affecting the operational performance of marine gas turbines.
		Every marine propulsion system, both commercial and military that includes a gas turbine, must have an air filtration system in order to ensure delivery of requisite quality air to the turbine.
	www.navalengineers.org /Publications/NEJ/Abstracts.html (3251 words)

	Using air to charge cellphones? IIT-Delhi does it!
		The specially designed turbine, which costs about Rs 200 to be developed inside a laboratory, is so small that it could be easily kept in a pocket, he said.
		Students at the Department of Industrial Design at Indian Institute of Technology, Delhi have attached a turbine with a mobile phone that helps charge it even when the user is travelling, Head of the Department Professor Lalit Kumar Das told PTI.
		All they need to do is -- place the turbine against the wind flow.
	inhome.rediff.com /money/2005/feb/24iit.htm (463 words)

	Roughness and Wind Shear
		Further details may be found in the engineering handbook Guidelines for Design of Wind Turbines from Risoe National Laboratory and DNV.
		Wind shear may also be important when designing wind turbines.
		If you consider a wind turbine with a hub height of 40 metres and a rotor diameter of 40 metres, you will notice that the wind is blowing at 9.3 m/s when the tip of the blade is in its uppermost position, and only 7.7 m/s when the tip is in the bottom position.
	www.windpower.org /en/tour/wres/shear.htm (635 words)

	Encyclopedia: Wind turbine
		See the broader article on wind power for more on turbine placement and controversy, and in particular see the wind energy section of that article for an understanding of the temporal distribution of wind energy and how that affects wind turbine design.
		Wind power plants are turbines which use the energy in the motion of the wind to make mechanical energy, which is then converted to electrical energy.
		A wind turbine is a machine for converting the kinetic energy in wind into mechanical energy.
	www.nationmaster.com /encyclopedia/Wind-turbine (606 words)

	Wind and Hydropower Technologies Program: Low Wind Speed Technology
		However, these turbine designs are not well suited to low wind sites and have only limited potential to achieve lower costs of energy.
		Wind turbines are currently capable of producing electricity at 4.5 to 5.0 cents/kWh in the low wind speed areas — or Class 4 wind sites — that are broadly available across the United States.
		The strategy of the low wind speed technology research is to use public/private partnerships to achieve technical advances in concept designs, component development, and full-scale prototypes.
	www.eere.energy.gov /windandhydro/wind_low_speed.html (553 words)

	WAPA Renewable Resources Program
		During the project, which is proposed at a value of approximately $8.3 million over a four-year period, Northern plans to design, build, erect and test a two-megawatt wind turbine capable of "more cost-effective energy production" at low wind speeds.
		Wind integration raises issues that do not arise with traditional generating units because of three unique characteristics of wind farms and their output: limited control, relative unpredictability, and temporal variations.
		The amount of cost-effective wind in the northwest might depend on the costs of building new transmission to connect wind farms to the grid, as well as any system costs required to deliver wind output to load centers.
	www.wapa.gov /es/greennews/2004/apr1204.htm (553 words)

	Wind Power: Renewable Energy for Home, Farm, and Business (2004) by Paul Gipe
		Gipe's new book includes chapters on how to evaluate modern wind turbine technology, how to install wind turbines safely, how to design a stand-alone power system for living off-the-grid, and how to use electricity-producing wind turbines to pump water in rural areas.
		In Denmark, for example, three-fourths of the country's wind generation is produced by wind turbines owned and operated by individuals or small cooperatives who generate electricity for their own needs and sell the excess to the local utility.
		These wind turbines are the same as those used in California's wind plants, says Gipe, except that they are distributed across the countryside instead of concentrated in one location.
	www.wind-works.org /books/wind_power2004_home.html (813 words)

	VESTAS SELECTED TO BUILD WIND TURBINES
		Ontario's first commercial wind farm is one step closer to reality today after Huron Wind signed a contract with Vestas to build, install and commission its wind turbines on the shores of Lake Huron near Tiverton, Ontario.
		All wind turbine units are scheduled to be operational by the end of 2002.
		Huron Wind is a 50:50 Limited Partnership between Ontario Power Generation (OPG) and British Energy (Canada) Ltd. Under this agreement, the two partners will jointly develop the wind farm and will share its output.
	www.opg.com /info/news/NewsMay8_2002.asp (813 words)

	Electricity Generation Using Small Wind Turbines At Your Home Or Farm
		Small wind turbines, (see Figure 1), which are generally defined as producing no more than 100 kW of electricity, are designed to be installed at homes, farms and small businesses either as a source of backup electricity, or to offset use of utility power and reduce electricity bills.
		The actual power production from a wind turbine will be influenced by many other factors, such as: the efficiency that the wind turbine is able to extract energy from the wind; the elevation at which the turbine is located; and other design characteristics of the wind turbine.
		At a minimum, mount a wind turbine high enough on a tower that the tips of the rotor blades remain at least 9 m (30 ft) above any obstacle within 90 m (300 ft).
	www.gov.on.ca /OMAFRA/english/engineer/facts/03-047.htm (813 words)

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