7.7 An engineer is considering the development of a small wind turbine (D = 1.25 m) for home applications. The design wind speed is 15 mph at T = 10°C and p = 0.9 bar. The efficiency of the turbine is n = 20%, meaning that 20% of the kinetic energy in the wind can be extracted. Estimate the power in watts that
7.7 An engineer is considering the development of a small wind turbine (D = 1.25 m) for home applications. The design wind speed is 15 mph at T = 10°C and p = 0.9 bar. The efficiency of the turbine is n = 20%, meaning that 20% of the kinetic energy in the wind can be extracted. Estimate the power in watts that
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:7.7 An engineer is considering the development of a small wind
turbine (D = 1.25 m) for home applications. The design wind
speed is 15 mph at T = 10°C and p = 0.9 bar. The efficiency of
the turbine is n = 20%, meaning that 20% of the kinetic energy
in the wind can be extracted. Estimate the power in watts that

Transcribed Image Text:can be produced by the turbine. Hint: In a time interval At, the
amount of mass that flows through the rotor is Am = mat and
the corresponding amount of kinetic energy in this flow is
(AmV²/2).
Air
D
PROBLEM 7.7
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