Thermal Analysis

In thermodynamics, the exergy of a system is the maximum useful work possible during a process that brings the system into equilibrium with a heat reservoir, reaching maximum entropy. When the surroundings are the reservoir, exergy is the potential of a system to cause a change as it achieves equilibrium with its environment. Exergy is the energy that is available to be used. 

Energy is neither created nor destroyed during a process. Energy changes from one form to another (First Law of Thermodynamics). In contrast, exergy is always destroyed when a process is irreversible, for example, loss of heat to the environment (Second Law of Thermodynamics). This destruction is proportional to the entropy increase of the system together with its surroundings. The destroyed exergy has been called anergy. For an isentropic process, exergy and energy are interchangeable terms, and there is no anergy. 

Advanced Exergy Analysis performed on: SPEM, TCR, Heat Exchanger and Heating Ventilation and Air Conditioning (HVAC)