Solution_Tester_15_2

Solution_Tester_15_2 - 145000 85030 ≈ = Factors favoring...

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2/6/2008 ME 145 - Solution to Tester Text Problem 15.2 Average power needed in Watts 11 12 10 65 3 25 365 24 1000 10 2 3 x . . x x x . = Power provided in Watts T T T N xN x x . x x CFxN 125000 1000 500 25 0 1000 500 = = Where CF =Capacity Factor and N T =number of wind turbine Therefore 000 920 2 125000 10 65 3 11 , , x . N T = = wind turbines Each turbine needs an area of ( 29 75000 50 30 30 10 3 2 2 = = = D D Dx m 2 Area needed 11 10 19 2 000 75 000 920 2 x . , x , , = = m 2 = 85,030 mi 2 Fraction of the Dakotas’ land area % 59
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Unformatted text preview: 145000 85030 ≈ = Factors favoring – good wind resources topography low population density Factors against -huge area, owning rights, cost of land acquisition physical access large scale ecosystem intervention – habitats, weather, patterns transmission distances to population centers reliability of source as sole provider...
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