"Calculate the percentage of heat used for doing work, if a steam engine intakes steam at 2000
C and after doing work exhausts it directly in air at 1000 C. Assume the engine to be ideal
engine"
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Given :
T1=200°c=473K
T2=100°C=373K
Efficiency of machine=n=W/Q1=(T1-T2)/T1
=473-373/473
=100/473
=0.21
W=0.21
Q1=21%Hence the engine will convert 21% of heat used for doing work.
T1=200°c=473K
T2=100°C=373K
Efficiency of machine=n=W/Q1=(T1-T2)/T1
=473-373/473
=100/473
=0.21
W=0.21
Q1=21%Hence the engine will convert 21% of heat used for doing work.
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