Question

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.

Answer 1

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