Electric solar cells can produce power with 15% efficiency. Assume a heat engine with a low temperature

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Electric solar cells can produce power with 15% efficiency. Assume a heat engine with a low temperature heat rejection at 30C driving an electric generator with 80% efficiency. What should the effective high temperature in the heat engine be to have the same overall efficiency as the solar cell?
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Fundamentals of Thermodynamics

ISBN: 978-0471152323

6th edition

Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen

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