Skip to main content

Home/ qmstech2/ Group items matching "Wind" in title, tags, annotations or url

Group items matching
in title, tags, annotations or url

Sort By: Relevance | Date Filter: All | Bookmarks | Topics Simple Middle
1More

How Can Wind Be Turned into Electricity - Ask.com - 1 views

www.ask.com/...ind-be-turned-into-electricity wind convert
shared by mattisonmar00 on 23 Sep 13 - No Cached
  • The wind turbine is a rotating machine that turns the kinetic energy of wind into mechanical energy. The energy can then be used by machines or converted into electricity and stored.
1More

AE Kids : Wind Power - 3 views

www.alliantenergykids.com/...022397 Wind current and history sustainable
shared by kirkpatrickcon99 on 24 Sep 13 - Cached
  • owa ranks 2nd in the nation for wind energy production as there are almost 2,900 utility scale wind turbines in Iowa.  This creates enough electricity to power 1,000,000 homes. Minnesota is fourth in the nation for wind energy production and Wisconsin is 19th.

fossil fuels BP - 0 views

started by blackmerbru98 on 03 Oct 13 no follow-up yet
1More

Yale Environment 360: Wind Energy Now Cheaper Than Fossil Fuel Power Plants in Australia - 0 views

e360.yale.edu/...3762 wind cost
shared by jack wells on 12 Mar 13 - No Cached
  • Unsubsidized wind power is now cheaper than electricity produced from new coal- and natural gas-fired power stations in Australia, according to an analysis by Bloomberg New Energy Finance. The study said that electricity can be supplied from a new wind farm at a cost of 80 Australian dollars per megawatt hour, compared to 143 Australian dollars from a new coal plant and 116 Australian dollars from a new natural gas plant.
1More

Environmental impact of wind power - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...ronmental_impact_of_wind_power cost pollution
shared by jack wells on 12 Mar 13 - No Cached
  • Compared to the environmental impact of traditional energy sources, the environmental impact of wind power is relatively minor, slightly higher than the environmental impact of hydro power on a life-cycle basis. Unlike electricity derived from fossil fuel-powered generating plants, wind power consumes no fuel and emits no air pollution in operation. As well, wind power consumes no fuel in operation, unlike nuclear power plants which do.
3More

Where does Wind Energy Come From? - 1 views

www.motiva.fi/...index.htm wind history
shared by aaronschr00 on 08 Mar 13 - No Cached
  • All renewable energy (except tidal and geothermal power), and even the energy in fossil fuels, ultimately comes from the sun. The sun radiates 174,423,000,000,000 kilowatt hours of energy to the earth per hour.
  • The sun radiates 174,423,000,000,000 kilowatt hours of energy to the earth per hour.
  • freeberntay99 on 08 Mar 13
     
    " Where does Wind Energy come From? All renewable energy (except tidal and geothermal power), and even the energy in fossil fuels, ultimately comes from the sun. The sun radiates 174,423,000,000,000 kilowatt hours of energy to the earth per hour. In other words, the earth receives 1.74 x 10 17 watts of power . 1) About 1 to 2 per cent of the energy coming from the sun is converted into Wind energy. That is about 50 to 100 times more than the energy converted into biomass by all plants on earth. 2)"
1More

BP Alternative Energy - wind power - how it works - 0 views

www.bp.com/iframe.do wind convert form
shared by cottonetar98 on 11 Mar 13 - No Cached
  • cottonetar98 on 11 Mar 13
     
    An interactive video about wind energy.
3More

Tidal Energy | Marine Current Turbines - 0 views

www.marineturbines.com/Tidal-Energy tidal tide
shared by mannixjul00 on 11 Mar 13 - No Cached
  • idal turbines are very much like an underwater windmill where the blades are driven by consistent, fast-moving currents.  The submerged rotors harness the power of the tidal streams to drive generators, which in turn produce electricity. Water is 832 times denser than air so consequently tidal turbine rotors can be are much smaller than wind turbine rotors generate equivalent  amounts of electricity, and they can be deployed much closer together. Devices that harness tidal stream energy present a unique set of engineering challenges in terms of design, installation and maintenance. During operation, the force of the tidal flow in Strangford Lough is equivalent to a 345 mph wind generating a 100 tonnes of thrust on the rotors. The unique SeaGen design allows capture of the maximum amount of tidal energy whilst keeping maintenance and connectivity costs low.
  • Tidal turbines are very much like an underwater windmill where the blades are driven by consistent, fast-moving currents.  The submerged rotors harness the power of the tidal streams to drive generators, which in turn produce electricity. Water is 832 times denser than air so consequently tidal turbine rotors are much smaller than wind turbine rotors generate equivalent  amounts of electricity, and they can be deployed much closer together. Devices that harness tidal stream energy present a unique set of engineering challenges in terms of design, installation and maintenance. During operation, the force of the tidal flow in Strangford Lough is equivalent to a 345 mph wind generating a 100 tonnes of thrust on the rotors.
  • kramerjac99 on 11 Mar 13
     
    How it works.
2More

Wind Turbines - How Long Have They Been Around? - 1 views

www.articlesbase.com/...-they-been-around-1479922.html wind history
shared by wellsann99 on 11 Mar 13 - No Cached
  • Essentially wind turbines were made first between 500-900 A.D. by the Persians and were used as a water pumping system
  • wellsann99 on 11 Mar 13
     
    when it was first made 
2More

Where does wind power come from - 0 views

wiki.answers.com/...here_does_wind_power_come_from form
shared by pondalb98 on 11 Mar 13 - No Cached
  • no it doesn't if it does what does power windmills,wind,where do that come from huh? so that's wrong, it comes from the sun
  • pondalb98 on 11 Mar 13
     
    "no it doesn't if it does what does power windmills,wind,where do that come from huh? so that's wrong, it comes from the sun"
1More

What are the advantages and disadvantages of wind power - 0 views

wiki.answers.com/...nd_disadvantages_of_wind_power wind
shared by conwayjam99 on 13 Mar 13 - No Cached
  • conwayjam99 on 13 Mar 13
     
    "Wind power will become cheaper than fossil fuel in the next few years (when the price of carbon is added to coal and oil), and in many places already is."
6More

Ocean Wave Energy Power Technology - History - 0 views

clean-future.com/...wave-power
shared by westkea00 on 06 Apr 13 - No Cached
  • Currently, numerous wave power plants (so called wave farms) have been implemented throughout the world. Many different organizations have designed various wave power systems that differ in size, cost, and effectiveness. A wave farm is a collection of wave power systems in order to create mass quantities of power. One example of a wave power plant is the Aguçadoura Wave Farm in Portugal from Pelamis Wave Power Ltd. It is the first wave farm ever established and produces 2.25 megawatts of power. It was completed in 2008. Other wave farms, with other companies involved, have been proposed.
  • In contrast to tidal power, ocean wave energy plants do not make use of the energy difference between high tide and low tide, but generating energy from continuous wave motion. So, wave energy generation is the conversion of the forces from the motion of waves into usable energy.
  • Wave energy is considered a form of hydropower, although it is the wind blowing over the surface of the ocean causing waves. So in many ways, wave energy is also wind energy - with all the pros and cons.
  • ...3 more annotations...
  • Wave energy is about using the energy of ocean waves for producing electrical current. It is a renewable energy resource and often confused with Tidal Power.
  • Wave power generation has been tested over the past century as an alternative energy source to fossil fuels to create electrical power, sea water desalinization, and reservoir pumping. Unfortunately, despite of all examinations and tests, the price for generating energy from ocean waves is still about twice as high as that of wind energy. Companies involved in wave energy generation hope to be able to cut 50% of the costs within the next couple of years.
  • During the 1970's gasoline crisis, wave power was pushed in order to be a good long term energy solution. Later, the energy crisis was resolved yet the leaps and bounds made in the innovation of wave power remained. Though there were not many wave power plants actually implemented, it has proven to be a benefit to modern resolutions with current power crises. Fuel prices are rising exponentially and the greenhouse effect is having potentially disastrous effects on the environment. There has never been more need for alternatives to fossil generated energy.
1More

Wave (geography) - GCSE Wiki - 0 views

gcse.wikia.com/...Wave_(geography) wave energy location geography
shared by logansar99 on 22 Oct 12 - No Cached
  • Wave energy is generally affected by three main factors: Wind speed - higher Wind speed means more wave energy, because the energy is transfered from the Wind to the wave. Fetch - the distance of open water over which the wave has travelled across makes a big differenece on wave height and wave energy, as a longer fetch gives the waves longer to 'grow'. Wind duration - with a longer storm, the waves will be bigger.
1More

Energy from Wind Power - 0 views

www.climatechangechallenge.org/...Energy-from-Wind-Power.htm wind sustainable
shared by bannonmel99 on 22 Oct 12 - No Cached
  • Wind energy is a pollution-free, infinitely sustainable form of energy. It doesn’t use fuel; it doesn’t produce greenhouse gasses and it doesn’t produce toxic or radioactive waste.
10More

Hydrogen vehicle - Wikipedia, the free encyclopedia - 2 views

en.wikipedia.org/...Hydrogen_vehicle hydrogen what form infrastructure current
shared by dpurdy on 19 Mar 12 - Cached
  • As of October 2009, Fortune magazine estimated the cost of producing the Honda Clarity at $300,000 per car
  • by 2010, the Department of Energy estimated that the cost had fallen 80% and that such fuel cells could be manufactured for $51/kW,
  • When compared to ICE vehicles using gasoline, however, fuel cell vehicles using hydrogen produced from natural gas reduce greenhouse gas emissions by 60%
  • ...6 more annotations...
    • dpurdy
      dpurdy on 19 Mar 12
       
      so an internal combustion engine releases more co2 than a fuel cell that uses natural gas as its hydrogen source. 
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[1]
  • While methods of hydrogen production that do not use fossil fuel would be more sustainable
  • The challenges facing the use of hydrogen in vehicles include production, storage, transport and distribution.
  • The hydrogen infrastructure consists mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations like those found on a hydrogen highway. Hydrogen stations which are not situated near a hydrogen pipeline can obtain supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen tank trucks or dedicated onsite production.
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[2]
  • dpurdy on 19 Mar 12
     
    Fuel cell cars are expensive.  The fuel cell costs a lot
6More

Winds, Waves, Tides - Ocean Energy | Environmental News, Articles & Information | Globa... - 2 views

www.ecoworld.com/...-waves-tides-ocean-energy.html cost how what sustainable future
shared by dpurdy on 03 Nov 11 - No Cached
  • Can Already Cost Under $.06 per Kilowatt Hour * Pneumatic devices, such as the oscillating water column (OWC), use wave motion to compress and decompress air, and drive a turbine. * Float-based devices utilise a buoyant float moving with the waves, reacting against a sea bed anchor in order to harness energy. * Spillover devices utilise wave height to replenish a reservoir of seawater, which runs a turbine. * Raft-type devices use the relative motion of adjacent rafts or pontoons to harness wave energy. * Moving-body devices articulate in the water, inducing motion, which may be used to drive a hydraulic motor.
  • Tidal stream devices extract energy from the diurnal flow of tidal currents (caused by the gravitational pull of the moon). Unlike wind and wave power, tidal streams offer entirely predictable output. However, as the lunar cycle is of around 25 hours’ duration, the timing of peak outputs differs by around an hour each day and tidal energy cannot be guaranteed at times of peak demand.
  • However, several large grid-connected demonstration projects are expected to enter the water in the near future. Tidal stream is thus a few years behind wave energy.
  • ...3 more annotations...
  • Marine Current Turbines is about to field test a submerged 300 kW tidal turbine off Devon in the United Kingdom
  • The manufacturers of all these devices expect to deliver energy at a cost of 10-14 US cents per kWh, falling to below 6 US cents as experience grows and technologies mature
  • Power generation using wave energy is at a much earlier stage of development. Wave energy offers more predictable outputs than wind, but in early 2003 there was only around one megawatt of generating capacity installed worldwide, all of it essentially with demonstration prototypes. Proposed projects are likely to take this to about 6 MW over the next few years. The wave industry is characterised by a wide variety of novel devices
6More

Wave power - Wikipedia, the free encyclopedia - 2 views

en.wikipedia.org/...Wave_power wave sustainable history location what grid
shared by dpurdy on 03 Nov 11 - No Cached
  • Waves are generated by wind passing over the surface of the sea. As long as the waves propagate slower than the wind speed just above the waves, there is an energy transfer from the wind to the waves.
  • The first known patent to utilize energy from ocean waves dates back to 1799 and was filed in Paris by Girard and his son.[12] An early application of wave power was a device constructed around 1910 by Bochaux-Praceique to light and power his house at Royan, near Bordeaux in France
  • Once the wave energy is captured at a wave source, power must be carried to the point of use or to a connection to the electrical grid by transmission power cables.[2
  • ...2 more annotations...
  • The realistically usable worldwide resource has been estimated to be greater than 2 TW.[49][50] Locations with the most potential for wave power include the western seaboard of Europe, the northern coast of the UK, and the Pacific coastlines of North and South America, Southern Africa, Australia, and New Zealand. The north and south temperate zones have the best sites for capturing wave power. The prevailing westerlies in these zones blow strongest in winter. Waves are very predictable; waves that are caused by winds can be predicted five days in advance.[citation needed]
  • There is a potential impact on the marine environment. Noise pollution, for example, could have negative impact if not monitored, although the noise and visible impact of each design varies greatly.[5]. Other biophysical impacts (flora and fauna, sediment regimes and water column structure and flows) of scaling up the technology is being studied.[51] In terms of socio-economic challenges, wave farms can result in the displacement of commercial and recreational fishermen from productive fishing grounds, can change the pattern of beach sand nourishment, and may represent hazards to safe navigation.[52] Waves generate about 2,700 gigawatts of power
  • anonymous on 28 Sep 13
     
    Stay Online on the worldwide web on the worldwide web on the world wide web online on the world wide web online roulette from Modern contemporary modern sydney, Fun and Free! Now you is able of doing Real "www.funlivecasino.com.au" Stay Online on the worldwide web on the worldwide web on the world wide web online on the world wide web online roulette for Fun in Modern contemporary modern sydney on a product new web page, FunLiveCasino.com.au. Using the newest on the worldwide web working technology, Fun Stay Gambling house allows you be a factor of a genuine action occurring on a genuine desk in a genuine betting house, all approved on Live! You can see other real gamers in the betting house betting on the same outcomes you do providing you greatest believe in in the outcomes as they are not designed 'just for you a, like other action being affected by products such as 'live studios' or pc designed actions. Its awesome to think when your really in the betting house that you might be on digicam, and individuals on the worldwide web might be watching! The long run is scary! Believe one day soon this will be the only way individuals would bet on the worldwide web because the worldwide web is complete of fraudsters, you have to be extremely cautious, and why would you perform Online Online on the worldwide web on the worldwide web on the world wide web online on the world wide web online roulette any other way except from a Real Gambling house you can assess out, see, pay interest to and trust! Amazingly this web page is definitely 100 % 100 % 100 % 100 % 100 % 100 % 100 % free and has no determining upon up process, no junk, no pc bunny rabbit bunny rabbit rabbit mouse mouse clicks and no stress. Just Immediate Fun "www.funlivecasino.com.au" 100 % 100 % 100 % 100 % 100 % 100 % 100 % free Stay Roulette! Give it a try, its value verifying out! "www.funlivecasino.com.au" Australia's Online Fun Stay Casino! Backlink designed from http://fiverr.c
6More

EIA Energy Kids - Hydropower - 1 views

www.eia.gov/...energy.cfm what how location
shared by dpurdy on 03 Nov 11 - No Cached
  • Tides are caused by the gravitational pull of the moon and sun, and the rotation of the Earth. Near shore, water levels can vary up to 40 feet due to tides. Dam of the Tidal Power Plant on the Estuary of the Rance River, Bretagne, France Source: Stock photography (copyrighted) Tidal power is more predictable than wind energy and solar power. A large enough tidal range — 10 feet — is needed to produce tidal energy economically.
  • The United States has no tidal plants and only a few sites where tidal energy could be produced economically. France, England, Canada, and Russia have much more potential to use this type of energy.
  • Tidal turbines are basically wind turbines in the water that can be located anywhere there is strong tidal flow. Because water is about 800 times denser than air, tidal turbines have to be much sturdier than wind turbines. Tidal turbines are heavier and more expensive to build but capture more energy.
  • ...2 more annotations...
  • Waves are caused by the wind blowing over the surface of the ocean. There is tremendous energy in the ocean waves. It's estimated that the total potential off the coasts of the United States is 252 billion kilowatthours a year, about 6% of the United States' electricity consumption in 2010. The west coasts of the United States and Europe and the coasts of Japan and New Zealand are good sites for harnessing wave energy.
  • Many more ways to capture wave energy are currently under development. Some of these devices being developed are placed underwater, anchored to the ocean floor, while others ride on top of the waves. The world's first commercial wave farm using one such technology opened in 2008 at the Aguçadora Wave Park in Portugal.
  • anonymous on 28 Sep 13
     
    Stay Online on the worldwide web on the worldwide web on the world wide web online on the world wide web online roulette from Modern contemporary modern sydney, Fun and Free! Now you is able of doing Real "www.funlivecasino.com.au" Stay Online on the worldwide web on the worldwide web on the world wide web online on the world wide web online roulette for Fun in Modern contemporary modern sydney on a product new web page, FunLiveCasino.com.au. Using the newest on the worldwide web working technology, Fun Stay Gambling house allows you be a factor of a genuine action occurring on a genuine desk in a genuine betting house, all approved on Live! You can see other real gamers in the betting house betting on the same outcomes you do providing you greatest believe in in the outcomes as they are not designed 'just for you a, like other action being affected by products such as 'live studios' or pc designed actions. Its awesome to think when your really in the betting house that you might be on digicam, and individuals on the worldwide web might be watching! The long run is scary! Believe one day soon this will be the only way individuals would bet on the worldwide web because the worldwide web is complete of fraudsters, you have to be extremely cautious, and why would you perform Online Online on the worldwide web on the worldwide web on the world wide web online on the world wide web online roulette any other way except from a Real Gambling house you can assess out, see, pay interest to and trust! Amazingly this web page is definitely 100 % 100 % 100 % 100 % 100 % 100 % 100 % free and has no determining upon up process, no junk, no pc bunny rabbit bunny rabbit rabbit mouse mouse clicks and no stress. Just Immediate Fun "www.funlivecasino.com.au" 100 % 100 % 100 % 100 % 100 % 100 % 100 % free Stay Roulette! Give it a try, its value verifying out! "www.funlivecasino.com.au" Australia's Online Fun Stay Casino! Backlink designed from http://fiverr.c
1More

Articles about Wind Turbines - Chicago Tribune - 0 views

articles.chicagotribune.com/...wind-turbines wind current
shared by kirkpatrickcon99 on 20 Sep 13 - No Cached
  • The world will have enough wind turbines to generate more than 300 gigawatts of power - the equivalent of 114 nuclear power plants
1More

Know it kid: Where does the wind come from? - 0 views

www.knowitkid.com/...where-does-wind-come-from.html wind form
shared by mattisonmar00 on 20 Sep 13 - No Cached
  • "As the sun warms the Earth's surface, the atmosphere warms too. Some parts of the Earth receive direct rays from the sun all year and are always warm. Other places receive indirect rays, so the climate is colder. Warm air, which weighs less than cold air, rises. Then cool air moves in and replaces the rising warm air. This movement of air is what makes the wind blow."
« First ‹ Previous 101 - 120 of 233 Next › Last »
Showing 20▼ items per page