Energy Systems Improvement based on Endogenous and Exogenous Exergy Destruction

摘要

The understanding of Exogenous and Endogenous Exergy Destruction for any given component can assist the engineers in deciding whether a subsystem or a structural adjustment is required in the optimization of an entire energy system. With emphasis placed on process performance (i.e. the mutual interdependencies of the components within the system) as oppose to the final output, exogenous and endogenous exergy destruction analysis guarantees that the quality of the output is improved without compromising the performance of individual components. The proposed concept for splitting the exergy destruction and the costs associated with the system components is applied to improve three energy conversion plants: a simple gas turbine process, a cogeneration and an externally-fired combined cycle power system and the results compared to the improvement of these said plants using a conventional exergoeconomic analysis.