Heat Engines and the Second Law of Thermodynamics
23. The Second Law of Thermodynamics / Heat Engines and the Second Law of Thermodynamics / Problem 5
In the combined system in which a Carnot heat engine powers a Carnot refrigerator, the heat absorbed from the hot reservoir Q1 is 1200 J. The hot reservoir has a temperature of 800 K, while the cold reservoir has a temperature of 500 K as shown in the figure. Determine the heat transfer values Q3 and Q4 for this interconnected arrangement.
![Diagram of a Carnot heat engine and refrigerator system with heat transfer values.](https://lightcat-files.s3.amazonaws.com/problem_images/30bee049f3aa6e9a-1682099795479.jpg)
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