Wind Energy Technology IEEE PES 22 July 2008 JP Lyons - Novus Energy Partners Bob Thresher – NREL Wind Tech Center Mike Robinson – NREL Wind Tech Center Paul Veers – Sandia National Labs Modern Wind Turbines Electrical Pitch Drives GE 1.5sl • 1.5 MW • 77 M Rotor Diameter • 50-100 M Tower Doubly-Fed Generator • 98% Availability • Speed 10-20 RPM Main Shaft & Bearing • Variable Pitch Gearbox Epoxy-Glass Composite Blades Transformer & Electrical Power
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Definition of Wind Energy “Wind Energy - Energy received from the movement of the wind across the earth. This energy is a result of the heating of our oceans‚ earth‚ and atmosphere by the sun. Turbines convert the kinetic energy of wind into mechanical or electrical energy that can be used for power.” The German physicist Albert Betz calculated in 1919 the possible maximum amount of energy that can be extracted out of wind energy. He came to the result of 59.3% that can be extracted and named this
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of the windmill Figure E21.2.1 shows the important parts of a windmill. The wind is shown heading perpendicular toward the hub and blade assembly (this example uses three blades‚ but some use only two‚ and‚ as Fig. 21.7 shows‚ some use many blades). Fig. E21.2.1 A view of a horizontal axis wind energy machine. (U.S. Department of Energy‚ Ref. 30) Energy‚ Ch. 21‚ extension 2 How a windmill works 2 Wind machines come in two basic types—horizontal axis or vertical axis machines. The
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Background/History on the Wind Power Industry The wind power industry first developed in Iran around 200 B.C. The first windmills were vertical axis wind turbines‚ which were used for pumping water and grinding whole grains for food consumption. The Chinese‚ Romans and Afghans all used windmills around this time for similar use. In the 13th century Holland started developing large horizontal axis windmills. These four-blade windmills were larger‚ carried more torque and wind speed and could do more
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Power of Wind Jason A. Jennings Principles of Marketing (BUS 330) Instructor: Debra McCoskey-Reisert January 28‚ 2012 Power of Wind There is a large sector in the United States that believes wind energy is an excellent alternative resource. There is also a group of people that believe that the wind turbines that are used to generate wind energy is a bad idea because they obstruct the natural view‚ causes death to birds‚ and generates noise pollution. They also argue that wind energy is
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Vest Wind 1 Vestas Wind is the largest manufactor of wind turbines in the world they employ 23‚000 people and have branch offices in 32 different countries. Vestas Wind was founded in Lem Denmark in 1945‚ by Peder Hansen . by the year 1970 Vestas Wind had manufactured and installed Over 1 thousand turbine windmills to 24 different countries. In the last thirty years it has produced
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Wind Energy Wind energy is a free‚ renewable resource‚ so no matter how much is used today‚ there will still be the same supply in the future. Because the wind energy is also the source of the clean‚ and non- polluting‚ electricity. Wind energy is friendly to the surrounding environment‚ as no fossil fuels were to generate electricity from wind energy. Wind Energy is a viable industry that has become energy source. The energy generated from wind is clean and efficient. The wind energy industry
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WIND POWER (RENEWABLE ENERGY) IN PAKISTAN By The wind of change is blown and world has now emphasizing towards new technologies out of which renewable energy is important one. Keeping in view the commercial and industrial consumption of oil and gas everyone is conscious to have some alternate resource for energy production. Wind is also one of the resources for the power generation. A wind turbine is a device that converts kinetic energy from the wind‚ also called wind energy‚ into mechanical
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Inherit the Wind Inherit the wind takes place in July in a rural town called Hillsboro. The play describes itself saying that it takes place in the not so distant past; however the play was written based on the famous scopes trial in 1925 so it may have been set around that era. The place take about a week from the time we meet the protagonist Bertram Cates until his sentence is read in court. The story is written in third person‚ because it is a play and is not inside the mind of one specific
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energy sources like solar and wind energy will see increased use to replace traditional sources. One of these sources‚ wind energy‚ is seeing a rise in development because it is a source of renewable energy that is both sustainable and poses minimal costs to the environment. Wind power has been around for many centuries‚ and has steadily developed over the last 100 years. The first major usage of wind power in the United States was between 1870-1930 when farmers used wind energy to pump water (Union
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