Answer to Question #91929 in Physical Chemistry for Amey Wankhede

Question #91929

What is more effective to improve efficiency of carnot engine to increase source
temperature keeping sink temperature constant or to decrease sink temperature keeping
source temperature constant.

Expert's answer

Solution.

Write down the efficiency equation for the Carnot engine:

"\\eta = \\frac{A}{Q}"

In order to increase the efficiency of the Carnot engine, it is necessary to reduce the sink temperature. The operation of the heat engine is performed until the temperature of the sink and the source is not the same. This is a state of equilibrium. And the production of work on this stops, and the work that we produce or receive, will be maximum. Thus, in order to increase the efficiency of the engine according to the forum recorded above, if we reduce the sink temperature, we increase the maximum performance (A).

Answer:

Decreasing the temperature of the sink keeping source temperature constant increases the efficiency of the Carnot engine.

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Assignment Expert

31.07.19, 10:01

Dear Amey Wankhede, Questions in this section are answered for free. We can't fulfill them all and there is no guarantee of answering certain question but we are doing our best. And if answer is published it means it was attentively checked by experts. You can try it yourself by publishing your question. Although if you have serious assignment that requires large amount of work and hence cannot be done for free you can submit it as assignment and our experts will surely assist you.

Amey Wankhede

28.07.19, 08:59

But as we know, work done is given by (heat supplied - heat rejected). Hence the temperature difference must be large and in case at equilibrium no work or infinitesimally work will be done. Then, how is this is possible?

Answer to Question #91929 in Physical Chemistry for Amey Wankhede

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