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Unformatted text preview: xplain your answer. Watt=Js-1.
Solution: The total solar flux into the lake is
Flux = 10000m2 500Wm!2 = 5 " 106W = 5MWatts ( )( Thermal efficiency = ) TH ! TL 20
298 )( ) Maximum Theoretical Output = 0.067 5 " 106W = 0.34 MW ( The claim is the engine can output on average 1MWatt. This does not violate the First
Law because the average output of energy does not exceed the solar flux. But the
proposed output assumes a thermal efficiency of 20%, which is more than three times the
thermal efficiency designated by the Second Law. I...
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This note was uploaded on 01/25/2012 for the course CHEM CHEM 152 taught by Professor Daruwala during the Spring '09 term at University of Washington.
- Spring '09