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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Question

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

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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