
Concept explainers
Whether the temperature in the Clausius inequality relation has to be absolute temperature.

Explanation of Solution
According to the Clausius inequality, the cyclic integral of
Write the Clausius inequality equation.
Here, the heat given or rejected from the system is
Write the equation for the reversible heat engine.
Here, the heat extracted from the source is
The Clausius inequality equation is derived from Equation (I). Thus, the temperature in the Clausius inequality relation has to be absolute temperature.
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Chapter 7 Solutions
Thermodynamics: An Engineering Approach
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