Factors affecting efficiency of Carnot cycle - Thermodynamics

Q.  The efficiency of the Carnot cycle is the function of
- Published on 20 Aug 15

a. temperatures (T1, T2) between which the Carnot cycle operates
b. net work done (Wnet)
c. heat supplied (Q1) and heat rejected (Q2)
d. all of the above

ANSWER: temperatures (T1, T2) between which the Carnot cycle operates
 
The efficiency of any heat engine is given by

η = Wnet / Q1

η = (Q1 – Q2) / Q1

η = 1 – (Q2/Q1)

It is necessary to know the temperature difference (T1 – T2) between which the cycle is operated. All the heat engines which are operating between the same temperature level have the same efficiency. It does not depend upon the working substance, work done or heat supplied. Therefore the efficiency of the Carnot cycle is the function of temperatures (T1, T2) between the Carnot cycle operates

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