A heat engine operates between the temperature limits of 1200°C and 300°C. If heat is supplied to the heat engine at a rate of 200 kJ/s, the maximum power output of this heat engine is

Question

Quizplus · Accepted Answer

Solved by EES Software. Solutions can be verified by copying-and-pasting the following lines on a blank EES screen. 
Q_in=200 "kW"
TH=1200 "C"
TL=300 "C"
Eta=1-(TL+273)/(TH+273)
W_out=Eta*Q_in
"Some Wrong Solutions with Common Mistakes:"
W1_W_out=(1-TL/TH)*Q_in "Using temperatures in C"
W2_W_out=Q_in/Eta "Dividing by efficiency instead of multiplying" 
W3_W_out=(TL+273)/(TH+273)*Q_in "Using temperature ratio"
W4_W_out=Q_in "Setting work equal to heat input"

A Heat Engine Operates Between the Temperature Limits of 1200°C