Developing criteria for advanced exergoeconomic performance analysis of thermal energy systems: Application to a marine steam power plant


Koroglu T., Söğüt O. S.

Energy, vol.267, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 267
  • Publication Date: 2023
  • Doi Number: 10.1016/j.energy.2022.126582
  • Journal Name: Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Computer & Applied Sciences, Environment Index, INSPEC, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Advanced exergoeconomic analysis, Advanced exergoeconomic performance criteria, Energy systems, Exergy based evaluation, Marine power plant
  • Istanbul Technical University Affiliated: Yes

Abstract

© 2023 Elsevier LtdAdvanced exergoeconomic analysis is a powerful tool to evaluate the economic improvement potential of a system, but it lacks providing information on the required investments to be made to improve the system and its components while considering cost-benefit assessments. In this paper novel criteria are introduced as an extension to fulfill the shortcomings of mentioned analysis and provide further insight about investment feasibility of components as well as the whole system including but not limited to the amount of avoided exergy destruction per unit renovating cost, the renovating cost to improve the efficiency, the amount of profit after renovation. The criteria are applied to a marine steam power plant to evaluate the system and its components. The results show that boiler has the highest avoidable exergy destruction cost of 77.4 $/h while the third stage of low-pressure turbine (LPT3) has the highest recovered exergy destruction per dollar invested. On the other hand, by investing in boiler, the saving potential is 36.8 $/h and on LPT3 it is 6.5$/h. It has been observed that the overall system has avoidable exergy destruction cost of 101$/h, while a 52.7 $/h part of it could be saved with the improvement investments made.