Conventional and advanced exergy analyses of a marine steam power plant

Turgay Koroglu*, Oguz Salim Sogut

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

Stricter rules and regulations about emissions for marine vessels and escalating fuel prices have motivated researchers and engineers to study further on improving fuel efficiency. Thus, it has become crucial to estimate the improvement potential and the sources of irreversibilities within energy systems. In this paper conventional and advanced exergy analyses are applied to a marine steam power plant to reveal insights which may help designers to make decisions on component renewal issues. The results of the study showed that the highest exergy destruction is within the boiler due to chemical reactions. Moreover, it has the highest avoidable exergy destruction. Pumps in the system contribute to the destruction in small percentages. Turbines have more importance compared to the heat exchangers. The findings for avoidable endogenous exergy destructions indicated that the improvement efforts should be focused essentially on boiler, turbines, condenser and pump equipment respectively, and that feed water heaters could be improved externally by improving other components. It is also concluded that the overall system has a 10% improvement potential of the exergy efficiency, of which almost three out of four is due to two components namely, boiler (6%), and low pressure turbine (1.3%), other components have smaller room for improvement.

Original languageEnglish
Pages (from-to)392-403
Number of pages12
JournalEnergy
Volume163
DOIs
Publication statusPublished - 15 Nov 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

  • Advanced exergy analysis
  • Energy efficiency design index
  • Marine energy systems
  • Steam power plant

Fingerprint

Dive into the research topics of 'Conventional and advanced exergy analyses of a marine steam power plant'. Together they form a unique fingerprint.

Cite this