A solar energy based heat engine which receives 80 kJ of heat at 100 C and rejects 70 kJ of heat to the ambient at 30 C is to be designed. The thermal efficiency of the heat engine is

A solar energy based heat engine which receives 80 kJ of heat at 100 C

1.	A solar energy based heat engine which receives 80 kJ of heat at 100 C and rejects 70 kJ of heat to the ambient at 30 C is to be designed. The thermal efficiency of the heat engine is
A.	70%
B.	18.8%
C.	12.5%
D.	Indetermine
Answer» D. Indetermine

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A solar energy based heat engine which receives 80 kJ of heat at 100 C and rejects 70 kJ of heat to the ambient at 30 C is to be designed. The thermal efficiency of the heat engine is

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