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# A Carnot engine operates between two heat reservoirs at ## Problem 53P Chapter 20

University Physics | 13th Edition

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Problem 53P

A Carnot engine operates between two heat reservoirs at temperatures TH and TC. An inventor proposes to increase the efficiency by running one engine between TH and an intermediate temperature T and a second engine between T and TC, using as input the heat expelled by the first engine. Compute the efficiency of this composite system, and compare it to that of the original engine.

Step-by-Step Solution:

Solution 53P Step 1 of 3: W 1W 2 The efficiency of the composite engine is e 12 = Q H1 Where Q H1 is the heat input to the first engine and W and W are the work outputs of two engines 1 2 For any heat engine,W = Q + Q C H For any carnot engine, Qlow= Tlow Q High T high Where Q lowand Q highare the heat flows at the two reservoirs that have temperatures T low and T high Step 2 of 3: Q high 2= Q low 1, Tlow 1= T , T low 2= T C T high2= T

Step 3 of 3

##### ISBN: 9780321675460

Since the solution to 53P from 20 chapter was answered, more than 500 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 53P from chapter: 20 was answered by Patricia, our top Physics solution expert on 05/06/17, 06:07PM. This full solution covers the following key subjects: engine, heat, efficiency, Intermediate, Carnot. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. University Physics was written by Patricia and is associated to the ISBN: 9780321675460. The answer to “A Carnot engine operates between two heat reservoirs at temperatures TH and TC. An inventor proposes to increase the efficiency by running one engine between TH and an intermediate temperature T and a second engine between T and TC, using as input the heat expelled by the first engine. Compute the efficiency of this composite system, and compare it to that of the original engine.” is broken down into a number of easy to follow steps, and 65 words. This textbook survival guide was created for the textbook: University Physics, edition: 13.

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