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Topic: Wind turbine

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In the News (Sat 20 Jul 19)

  Wind and Hydropower Technologies Program: How Wind Turbines Work
Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and rotation of the earth.
The terms wind energy or wind power describe the process by which the wind is used to generate mechanical power or electricity.
Upwind turbines face into the wind; the yaw drive is used to keep the rotor facing into the wind as the wind direction changes.
www.eere.energy.gov /windandhydro/wind_how.html   (795 words)

 What do I need to know to purchase a residential wind turbine?
A wind turbine, which is installed on top of a tall tower, collects kinetic energy from the wind and converts it to electricity that is compatible with a home's electrical system.
Depending upon the average wind speed in the area, a wind turbine rated in the range of 5 to 15 kilowatts would be required to make a significant contribution to meet this demand.
Wind resource data published by the U.S. Department of Energy is sufficient for an experienced evaluator to predict wind turbine performance.
www.awea.org /faq/rsdntqa.html   (1201 words)

  Manufacturers of Wind Turbine Turbine Ventilator & Wind Turbine Ventilators,Wind Turbine Exporters India,Indian ...
Wind turbo ventilators are acknowledgement by industrial giants worldwide and most of world's most developed countries have moved ahead with wind turbine ventilators and found professional and ultimate solution for industrial air ventilation problems.
Wind Turbo vents is a wind driven ventilator that is installed on the roof top to provide effective ventilation for all kind of industries.
Wind turbovent is a combination of both natural and forced air ventilation system.
www.eindiabusiness.com /windturbineventilators   (1158 words)

 The Wind Turbine Company
Wind energy has been the fastest growing energy source in the world since 1990.
Our goal has always been to produce a utility-scale wind turbine that does not need subsidies in order to compete in electricity markets.
Our target is to reduce the unsubsidized cost of generating wind energy to 3.0¢/kilowatt-hour in large windfarm applications.
www.windturbinecompany.com   (308 words)

 Energy Saving Now!
Large wind turbine technology is already one of the larger future energy supplies and small wind turbines have a big potential.
What is needed for a common use of wind are turbines that meet a specification that is flexible enough for general application and be possible to mount almost everywhere and plug-in to the grid.
Wind Turbines on the market are often larger, mounted on high towers and need plenty of space around them for safety and efficiency.
energysavingnow.com /plugin/windturbine.shtml   (1184 words)

 Wind Turbines
Wind turbines are used to generate electricity from the kinetic power of the wind.
Wind turbines can be used to generate large amounts of electricity in wind farms both onshore and offshore.
The wind turbines will cost £1,498 and the solar thermal panels by R M Solar cost from the same - with a survey and installation included in the price.
www.alternative-energy-news.info /technology/wind-power/wind-turbines   (535 words)

 Toronto Hydro Corporation -- Wind Turbine
This wind turbine was inspired by a group of Toronto residents who had a dream of cleaner energy and cleaner air.
The turbine is a good example of how communities can work together to meet their electricity needs and address global issues of air pollution and climate change.
This is the first wind turbine erected in the City of Toronto and the first in a downtown urban setting in North America.
www.torontohydro.com /corporate/initiatives/green_power/wind_turbine/index.cfm   (553 words)

 City vies to host giant wind turbine - The Boston Globe
City and state officials are proposing to use surplus space at a Massachusetts Port Authority pier for the $9 million turbine test tower and laboratory.
With a month left before Governor Mitt Romney leaves office, the wind turbine site proposal is part of a flurry of efforts Romney's top economic adviser, Ranch Kimball, is pushing to leave a wide-ranging Romney renewable-energy and "green power" legacy.
In an interview, Kimball said the wind turbine facility would be more than just a prominent symbol of the state's support for renewable energy.
www.boston.com /business/articles/2006/12/13/city_vies_to_host_giant_wind_turbine   (785 words)

 Counter-Rotating Disk Wind Turbine
Operation of the turbine is remarkably quiet as compared to the appearance of the video due to biasing members that absorb the shock of the opening and closing and provide useful energy output.
The shaft of the new innovative vertical axis wind turbine may be connected to an air compressor to produce high pressure compressed air that may be used as a form of energy storage and may additionally be used as ballast weight as used in the gravityplane.
The vector angle of the wind used by lift detrimentally deflects a large portion of the air mass that contains the kinetic energy, which results in the energy not being useful to the direction needed to provide a beneficial force and/or not being harnessed at all as it is deflected.
www.fuellessflight.com /windturbine.htm   (870 words)

Not only is it one of the most visually appealing wind turbines available on the market, its small scale allows it to fit seamlessly into an urban environment, providing a renewable energy resource in places where space constraints previously made it impossible to hook up green power systems.
It is also quieter than your typical wind turbine because the tip speed is slower, due to the triple-helix design, which in turn allows it to be situated closer to buildings and on towers.
In winds of more than 80kph (50mph), furthermore, the blades and gearboxes of conventional turbines cannot cope with the strain, and they have to be shut down.
inhabitat.com /blog/2006/11/15/quiet-revolution-wind-turbine   (2731 words)

 Sandia National Laboratories: Wind Energy Technology
A significant step toward this goal is likely to be blades that are both stiffer and stronger to span greater areas, both lighter and adaptive (reports) to reduce system loads, and that incorporate innovative airfoils to increase energy capture or decrease system loads.
Wind turbines are fatigue critical machines that are subjected to highly-variable loads for extended periods of times.
These tools include a generalized numerical framework or the fatigue analysis of turbine components (the LIFE2 Fatigue Analysis Code for Wind Turbine Applications), and the fatigue reliability of wind turbine components (the FAROW code).
www.sandia.gov /wind/Blades.htm   (1121 words)

 NWTC Wind Turbine Certification - Design Evaluation
Wind turbine design evaluation for certification provides information needed by certification agents to assess the integrity and safety of the design.
With over 20 years of experience in evaluating and testing many configurations of wind turbines from many different sources, the NWTC is an ideal source for design evaluation and analysis reports.
Wind turbine components and subsystems are commonly fabricated in a number of dispersed locations before being assembled at a central location, which may be at the installation site.
wind.nrel.gov /cert_stds/Certification/designeval/design.html   (1391 words)

 How I built an electricity producing wind turbine
That meant the wind turbine would never be fully assembled and not get a proper test until I was ready to put it up in the field.
The general principal behind the controller is that it monitors the voltage of the battery(s) in your system and either sends power from the turbine into the batteries to recharge them, or dumps the power from the turbine into a secondary load if the batteries are fully charged (to prevent over-charging and destroying the batteries).
The wind is as liable to spin the turbine head around one way as it is the other.
www.mdpub.com /Wind_Turbine/index.html   (4943 words)

 Carleton College: Facilities Management: The History of Carleton's Wind Turbine
Saturday, September 25, 2004 marked the dedication of Carleton's 1.65 megawatt wind turbine, the first utility grade wind turbine in the country to be owned by a college.
Though the turbine was constructed with amazing speed in August 2004, the process of developing a green energy plan was much longer.
Although the winds around Northfield are not as strong as in the southwestern portion of Minnesota, with the new technologies, turbines have become economically feasible.
apps.carleton.edu /campus/facilities/sustainability/wind_turbine   (1782 words)

 North Carolina Sustainable Energy Association   (Site not responding. Last check: )
Wind turbines (which produce electricity) and wind mills (which harness mechanical energy for water pumping or grinding grain) come in a range of sizes from sailboat battery chargers to several megawatt utility generators.
Wind resource is often best in areas of sparse population and difficult building conditions, as in a high mountain pass.
Why Wind for NC, and Dispelling Myths About Wind Power A combination of two articles prepared by the Wind Working Group, based in Asheville, examining the advantages and public support for wind power, particularly in the NC mountains, and addressing misconceptions about wind turbines.
www.ncsustainableenergy.org /renewable/wind.html   (1285 words)

 BWEA - Building your own wind turbine
Wind energy is both green and fun, so the idea of building one's own wind turbine is a good one.
The wind is free, but small wind turbines are expensive in relation to what they produce, and cannot realistically compete with mains electricity.
Wind turbines work with thin air, so they need to be large in relation to the power they produce.
www.bwea.com /you/byo.html   (743 words)

 WTN2007 - Conference web pages for Wind Turbine Noise 2007
Wind Turbine Noise Conference, Lyon, France 20-21 September 2007
This conference aims to bring together the latest information on noise and vibration from wind turbines to give an unbiased framework from within which future developments can be assessed.
The conference will also provide a venue for researchers on wind turbine noise and its effects to meet together and also meet with those who design wind turbine installations, both in industry and in the planning process.
www.confweb.org /wtn2007   (817 words)

 Wind Turbine Company
Bellevue, WA, July 6 - The Wind Turbine Company (WTC) has been awarded an $800,000 contract with the U.S. Department of Energy's National Renewable Energy Laboratory (DOE, NREL) to continue prototype testing and development of the company's WTC 750 kilowatt wind turbine.
"The absence of new wind project development in the U.S. so far this year clearly illustrates there is a compelling need for a wind turbine that does not require on going operating subsidies in order to compete in the electricity marketplace," noted Miles.
The Wind Turbine Company was formed in 1990 to design and manufacture wind turbines capable of producing unsubsidized electricity at prices a third less than current manufacturers.
www.windturbinecompany.com /news/index.html   (417 words)

 Wind Turbine Conference 2005   (Site not responding. Last check: )
The urgent need to reduce dependence on fossil fuels is being met, in part, by the introduction of wind turbines, either singly or in multiple arrays, both onshore and offshore.
Development of onshore wind power brings wind turbines closer to habitation, leading to the possibility of noise problems, such that a frequent objection raised in planning procedures is that of noise and vibration.
The conference will also provide a venue for researchers on wind turbine noise and its effects to meet together and also meet with those who design wind turbine installations, both in industry and in the planning process.
dialspace.dial.pipex.com /prod/dialspace/town/pipexdsl/s/ascc85/WindTurbine2005   (952 words)

 Alton's Wind Turbine Page
Because wind power is not particularly reliable over the short term, the storage/use of the power has a lot to do with how much good you'll get out of it.
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.
www.alton-moore.net /wind_turbines.html   (7543 words)

 Stevens Point Journal - Wind turbine powers area farm
It is built to withstand winds of up to 120 mph, with three legs set ten foot deep in more than two truckloads of reinforced concrete.
With the average 12-14 mph wind in this area, the annual output is estimated to be enough to supply four average homes.
He sees the tall tower and whirling blades of his wind turbine as a tie to the past and a link to the future.
www.baywinds.com /new/Windturbinepowersareafarm.htm   (807 words)

 TVA: Wind Turbine Energy   (Site not responding. Last check: )
A turbine and switchgear are mounted at the top of each tower in a casing called a nacelle, and blades are attached to the turbine.
The turbines use moving air to produce power by transferring the wind’s momentum to the rotor blades and localizing that energy in a single rotating shaft.
The turbine blades are made not of metal but of glass-reinforced epoxy (a material similar to fiberglass), and the turbines are equipped with asynchronous (brushless) generators that don’t create any electrical disturbance.
www.tva.gov /greenpowerswitch/wind_faq.htm   (603 words)

 Products page
With the Worlds average prevailing wind speed being only 3 m/s (10.8 km/h 6.75 mph) the lower the wind speed at which the turbine starts to generate power the better.
The Windside Wind Turbine range with its unique vane construction utilises wind speed as low as 1-3 m/s (3.6 km/h 2.25 mph) other turbines are still standing still at these wind speeds.
Wind speed is not the only factor to consider.
www.windside.com /products.html   (786 words)

 Rooftop Turbines: Roof-Top Mounting and Building Integration of Wind Turbines
The turbine operated briefly before it was removed because of the damage it caused to the building.
Testing of small wind turbines on campus should be done in open areas without heavy pedestrian traffic, such as near athletic fields, farm test plots, and so on.
Note that for turbines using a friction fit onto the stub tower (pipe section) use a through bolt to ensure that the turbine never leaves the tower unless you intend it to.
www.wind-works.org /articles/RoofTopMounting.html   (1387 words)

 BBC NEWS | England | Kent | Wind turbine plan to be unveiled
Plans for a wind farm off the coast of Thanet will be revealed to the public at a meeting on Wednesday.
It is the first in a series of meetings aimed at informing residents of the proposals for up to 80 turbines to be installed 12km off the Kent coast.
Mark Petterson, of Warwick Energy, said a total of 15 wind farm projects off the South East coast were being considered, as part of a government push to increase renewable energy supplies.
news.bbc.co.uk /1/hi/england/kent/4093784.stm   (316 words)

 Turbine Services-Wind Turbines
high efficiency domestic sized wind turbines and water turbines, together with the latest generation of sine wave inverters there is now every reason for individual households and communities to generate their own power from this limitless resource.
Left is wind turbine control panel (shows battery voltage and current flowing from wind turbine to batteries).
Generating upwards of 30,000 units a year the fifteen kilowatt wind turbine is ideal for large country houses, schools, or community schemes.
www.turbineservices.co.uk /Wind_Turbines.htm   (861 words)

 Wind Power
Wind power is especially helpful here in the winter to capture both the ferocious and gentle mountain winds during the times of least sunlight and highest power use.
As you'll see by examining our latest machines, our philosophy about designing wind turbines is to make large, sturdy machines that produce good power in low wind speeds, and are able to survive high wind events while still producing maximum power.
Somehow the project became the 'Wind Farm' and there are now turbines flying in the area sporting a whale, a rooster, and a pig for tail vanes.
www.otherpower.com /otherpower_wind.html   (2394 words)

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