 |  Thermodynamics: An Engineering Approach, 4/e Yunus A. Çengel,
University of Nevada, Reno
Michael A. Boles,
North Carolina State University
Exergy: A Measure of Work Potential
Learning Objectives
I.Examine the performance of engineering devices in light of the second law of thermodynamics. |
| | | II.Define exergy (also called availability), which is the maximum useful work that could be obtained from the system at a given state in a specified environment. |
| | | III.Define reversible work, which is the maximum useful work that can be obtained as a system undergoes a process between two specified states. |
| | | IV.Define irreversibility (also called the exergy destruction or lost work), which is the wasted work potential during a process as a result of irreversibilities. |
| | | V.Define the term second-law efficiency. |
| | | VI.Develop the exergy balance relation. |
| | | VII.Apply exergy balance to closed systems and control volumes. |
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2002 McGraw-Hill Higher Education