In the following image, if we intend to increase the theoretical efficiency of this engine, we can raise TH by AT or by decreasing T by the same AT. Which one of the two scenarios will be more effective?

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Chapter5: Temperature And Heat
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In the following image, if we intend to increase the theoretical efficiency of this engine,
we can raise Ty by AT or by decreasing T, by the same AT. Which one of the two
scenarios will be more effective?
Q6.
Schematic of
a Carnot engine
TH
Heat is
absorbed.
Work is done
1.
Heat is lost.
by the engine.
A ENG
Transcribed Image Text:In the following image, if we intend to increase the theoretical efficiency of this engine, we can raise Ty by AT or by decreasing T, by the same AT. Which one of the two scenarios will be more effective? Q6. Schematic of a Carnot engine TH Heat is absorbed. Work is done 1. Heat is lost. by the engine. A ENG
Expert Solution
Step 1: Carnot heat engine

As we know the efficiency of Carnot heat engine 

Efficiency η = work doneHeat taken

η = Q1 - Q2Q1 = T1 - T2T1ηT1 = T1 - T2

Now when T increase in source then the efficiency becomes

η' = (T1 + T) - T2T1 + Tη' = T1 - T2 + T T1 + Tη' = T1η + T T1 + T

 

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