TY - JOUR
TI - Avoidable and unavoidable exergy destruction and exergoeconomic evaluation of the thermal processes in a real industrial plant
AU - Vučković Goran
AU - Vukić Mića
AU - Stojiljković Mirko
AU - Vučković Dragan D
JN - Thermal Science
PY - 2012
VL - 16
IS - 12
SP - 433
EP - 446
PT - Article
AB - Exergy analysis is a universal method for evaluating the rational use of  energy. It can be applied to any kind of energy conversion system or chemical  process. An exergy analysis identifies the location, the magnitude and the  causes of thermodynamic inefficiencies and enhances understanding of the  energy conversion processes in complex systems. Conventional exergy analyses  pinpoint components and processes with high irreversibility. To overcome the  limitations of the conventional analyses and to increase our knowledge about  a plant, advanced exergy-based analyses are developed. These analyses provide  additional information about component interactions and reveal the real  potential for improvement of each component constituting a system, as well as  of the overall system. In this paper, a real industrial plant is analyzed  using both conventional and advanced exergy analyses, and exergoeconomic  evaluation. Some of the exergy destruction in the plant components is  unavoidable and constrained by technological, physical and economic  limitations. Calculations related to the total avoidable exergy destruction  caused by each component of the plant supplement the outcome of the  conventional exergy analysis. Based on the all-reaching analysis, by  improving the boiler operation (elimination of approximately 1 MW of  avoidable exergy destruction in the steam boiler) the greatest improvement in  the efficiency of the overall system can be achieved.