lecture03 - Wind Power I Wind drives Wind Power throughout...

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ENGRI 1290 1 Wind Power I Wind drives Wind Power throughout the ages Density and mass flow rate
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ENGRI 1290 2 Lecture’s objectives Learning what drives winds and their geographical distribution Discovering how early and antique men harnessed wind power Building a physical quantities of air flow Read Ch15, section 1 to 5 in Fundamentals of renewable energy processes
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ENGRI 1290 3 Wind energy in the world today
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ENGRI 1290 4 What drives the wind ? Temperature difference between the equator and the poles This is due the angle at which sunlight hits the planet Rotation of the Earth Difference in hygrometric levels Near oceans and lakes Difference in altitude or terrain topology Near mountains or passes Difference in land temperature This is due to land albedo and heat absorption Wind is an atmospheric (large scale) air flow due to pressure difference between two geographical regions and can be due to Global (worldwide) conditions: Local conditions:
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ENGRI 1290 5 Wind distribution in the USA 50 m above local ground levels Including coastal areas Source http://www.nrel.gov/gis/wind.html
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ENGRI 1290 6
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