An inventor claims to have devised a closed cyclic engine which exchanges heat with cold and...
An inventor claims to have devised a closed cyclic engine which
exchanges heat with cold and hot reservoirs at 25 and 350 ◦C,
respectively, and produces 0.45 kJ of work for every kJ of heat
extracted from the hot reservoir. Is this claim
believable?
Homework Answers
As given data,
Tc = 25 0C And Th = 350 0C
Work Produced per KJ of Heat Extracted from Hot Reservoir = 0.45KJ = Efficiency
If the device is Carnot cycle then efficiency will maximum and value will = 1 - (Tc/Th )
=1- (25/350) = 0.928
Hence, this type of device is possible and the claim is also belevable.
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