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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Wind why Why: the case for wind power It’s clean. Wind power is non-polluting and safe. During operation it does not contribute to global warming. There is no legacy of pollution for future generations. In contrast brown coal‚ the main source of Victoria’s electricity production‚ is the most polluting of the fossil fuels‚ making this state the worst greenhouse polluter in Australia. If we are to avoid climate change we must drastically cut emissions. It’s affordable and available right now
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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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Most genres such as Drama and Action show what people want to see in the story. For example‚ Drama shows a situation where it could be happened in real life while Action shows a lot of dynamic movement through the story. However‚ horror does not want to show what people want to see like other genres. Horror is a genre that shows the story that people do not expect to see and controls fear in a negative way. Horror has used a lot of same subjects such as psychopath murderers and mysterious monsters
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Mary Wollestonecraft Godwin Shelley was born on August 30‚ 1797 in London‚ England. Her father‚ William Godwin was a philosopher while her mother‚ Mary Wollestonecraft‚ was a strong feminist of her generation. They got married in 1797 to protect the rights of their upcoming child. (Frankenstein) However‚ a few weeks after on the 10th of September‚ her mother died from Placental Infection due to the complication in Mary’s labor from before. (Romantic Circles) Since Mary’s mother died early in her
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SUMMARY According to Keats‚ Autumn is a season of mists; a cloudlike aggregation of minute globules of water suspended in the atmosphere at or near the earth’s surface‚ reducing visibility to a lesser degree than fog; and mellow; soft‚ sweet‚ and full-flavored from ripeness‚ as fruit: well-matured‚ as wines: soft and rich‚ as sound‚ tones‚ color‚ or light: made gentle and compassionate by age or maturity; softened: friable or loamy‚ as soil: mildly and pleasantly intoxicated or high: pleasantly
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In the novel "Frankenstein‚" by Mary Shelley‚ Victor Frankenstein is the creator of a "monster." Because of his thirst for knowledge and ambition to create life‚ he goes too far and creates a huge creature‚ which he immediately rejects. This rejection plays a major part in the monster’s hatred for humans‚ especially Victor. The author‚ Mary Shelley‚ supports the theme‚ loss of innocence‚ through plot‚ setting and characterization. This essay will explain the many ways that the characters lost their
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Frankenstein is a book on science fiction by Mary Shelley. Most people know the story of Frankenstein. It is about a scientist that is able to create life but end up creating a monster instead. I have read the first sixty pages which gives you the background of Victor Frankenstein. Victor grows up in Geneva with a generic family. As time passes‚ his mom passes away as well as others. Through his young life‚ he had many deaths that occurred. Victor went on to study science. His interest were natural
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this in Mind‚ we can understand that it is natural for man to think beyond his imagination. What drives human beings to seek scientific knowledge of the world? We will take a look at what drove Victor Frankenstein to seek more knowledge. “Mary Shelley‚ the author of Frankenstein‚ the protagonist of her work‚ Victor Frankenstein is an ambitious young scholar who discovers how to bestow animation upon lifeless
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