A reversible heat engine has efficiency of 0.6 when it absorbs 400kj of energy as heat from a reservoir at 537°C. Calculate the sink temperature and energy rejected as heat to the sink.
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Answer:
Efficiency of the carnot engine(η)=1−
T
h
T
c
η=1−
800
400
=1−0.5=0.5
also η=
Q
h
W
0.5=
Q
h
750
Q
h
=1500J/s=
4.2
1500
cal/s=357.14cal
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