A windmill produces mechanical power according to this formula: P = 1/2rV 3 A where Z is
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A windmill produces mechanical power according to this formula: P = 1/2ηrV3A where Z is its efficiency (assume Z = 60.%), r = density of air (1.00 kg/m3), V = wind speed in m/s (assume 5.0 m/s), and A is the cross-section of the mill that faces the wind (assume it is circular with a radius of 35.0 m).
a. How many kW does the windmill produce?
b. To load level, you have a battery storage device that can store 2.00 MWh. How long will you be charging it?
c. If the energy storage density you can achieve is 125 Wh/kg, how big is this storage battery in tonnes?
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Related Book For
Exploring Engineering An Introduction to Engineering and Design
ISBN: 978-0123747235
2nd edition
Authors: Philip Kosky, George Wise, Robert Balmer, William Keat
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