680C = 273+680 = 953 K
220 C = 273 + 220 = 493 K
e = (953-493)/953 = .483
IF and ONLY IF it is a Carnot cycle heat engine (maximum efficiency)
A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine?
3 answers
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