Exergy Analysis. ME 210 Advanced Thermodynamics. Definitions. Exergy (also called Availability or Work Potential): the maximum useful work that can be obtained from a system at a given state in a given environment; in other words, the most work you can get out of a system
ME 210 Advanced Thermodynamics
Here some work is used to push the atmospheric air (the surroundings) out of the way; that work can’t be used for other purposes.
Ref: Cengel & Boles, Thermodynamics, An Engineering Approach, 4th edition, Mc-Graw Hill, 2002.):
Ref: Cengel and Boles
For multiple fluid streams, unsteady flow:
For one fluid streams, steady flow:
To find Wrev, set Sgen=0. If adiabatic, Q=0.