Reconsider Prob. 18-117. If the school management goes for a larger turbine with a blade diameter of
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Prob. 18-117
A school currently pays $23,000 a year for the electricity it uses at a unit price of $0.11/kWh. The school management decides to install a wind turbine with a blade diameter of 20 m and an average overall efficiency of 30 percent in order to meet its entire electricity needs. What is the required average velocity of wind in this location? Take the density of air to be 1.2 kg/m3 and assume the turbine operates at the required average speed 7500 hours a year.
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Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
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