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Physics for Scientists and Enginee...

9th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305116399

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BuyFindarrow_forward

Physics for Scientists and Enginee...

9th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305116399
Chapter 22, Problem 22.3QQ
Textbook Problem
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Three engines operate between reservoirs separated in temperature by 300 K. The reservoir temperatures are as follows: Engine A: Th = 1 000 K, Tc = 700 K; Engine B: Th = 800 K, Tc = 500 K; Engine C: Th = 600 K, Tc = 300 K. Rank the engines in order of theoretically possible efficiency from highest to lowest.

To determine

The rank of engines in order of calculated efficiency.

Explanation of Solution

Write the formula to calculate the efficiency of the Carnot engine A

  eCA=1TcAThA

Here, eCA is the efficiency of engine A, TcA is the temperature of compressor at A and ThA is the temperature  of reservoir at A.

Substitute 1000K for Th and 700K for Tc to find eCA.

  eCA=1700K1000K=10.7=0.3

Write the formula to find efficiency of the Carnot engine B

  eCB=1TcBThB

Here, eCB is the efficiency of engine B, TcB is the temperature of compressor at B and ThB is the temperature  of reservoir at B.

Substitute 800K for Th and 500K for Tc to find eCB

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Chapter 22 Solutions

Physics for Scientists and Engineers, Technology Update (No access codes included)
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