Exergy Analysis for Energy Systems

Energy analysis assists in performance evaluation of a system, and exergy analysis not only results in performance but also diagnosis, identifies the strong and weak areas, reveals the scope for improvement, and suggests modifications for perfection. In current work, four energy systems have been selected and evaluated using exergy approach and identified the merits in exergy usage. The exergy evaluation methodology has been generated. The selected problems are (i) testing of heat exchanger (deaerator) locator in a power plant, (ii) optimum degree of steam injection in a combustion changer, (iii) comparison of two plant configurations, and (iv) study on working fluid choice. The exergy analysis results exited and novel finding, used in modifications and decision-making. The results of selected four problems are (i) new deaerator location, (ii) steam fuel ratio of 3, (iii) parallel arrangement of heat source with regenerator, and (iv) LiBr-water mixture in place of ammonia-water mixture.