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Conventional and advanced exergy analyses of a marine steam power plant

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  • Koroglu, Turgay
  • Sogut, Oguz Salim

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.

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  • Koroglu, Turgay & Sogut, Oguz Salim, 2018. "Conventional and advanced exergy analyses of a marine steam power plant," Energy, Elsevier, vol. 163(C), pages 392-403.
    • Handle: RePEc:eee:energy:v:163:y:2018:i:c:p:392-403
    DOI: 10.1016/j.energy.2018.08.119
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    Cited by:

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    2. Wu, Junnian & Wang, Na, 2020. "Exploring avoidable carbon emissions by reducing exergy destruction based on advanced exergy analysis: A case study," Energy, Elsevier, vol. 206(C).
    3. Xinglin Yang & Qiang Lei & Junhu Zou & Xiaohui Lu & Zhenzhen Chen, 2023. "Green and Efficient Recovery and Optimization of Waste Heat and LNG Cold Energy in LNG-Powered Ship Engines," Energies, MDPI, vol. 16(24), pages 1-32, December.
    4. Ximei Li & Jianmin Gao & Yaning Zhang & Yu Zhang & Qian Du & Shaohua Wu & Yukun Qin, 2020. "Energy, Exergy and Economic Analyses of a Combined Heating and Power System with Turbine-Driving Fans and Pumps in Northeast China," Energies, MDPI, vol. 13(4), pages 1-22, February.
    5. Koroglu, Turgay & Sogut, Oguz Salim, 2023. "Developing criteria for advanced exergoeconomic performance analysis of thermal energy systems: Application to a marine steam power plant," Energy, Elsevier, vol. 267(C).
    6. Madejski, Paweł & Żymełka, Piotr, 2020. "Calculation methods of steam boiler operation factors under varying operating conditions with the use of computational thermodynamic modeling," Energy, Elsevier, vol. 197(C).
    7. Vedran Mrzljak & Igor Poljak & Maro Jelić & Jasna Prpić-Oršić, 2023. "Thermodynamic Analysis and Improvement Potential of Helium Closed Cycle Gas Turbine Power Plant at Four Loads," Energies, MDPI, vol. 16(15), pages 1-26, July.

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