Due to design changes, the efficiency of an engine
Chapter 15, Problem 15.107(choose chapter or problem)
Due to design changes, the efficiency of an engine increases from 0.23 to 0.42. For the same input heat QH, these changes increase the work done by the more efficient engine and reduce the amount of heat rejected to the cold reservoir. Find the ratio of the heat rejected to the cold reservoir for the improved engine to that for the original engine. *
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