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Plant characteristics of an integrated solid oxide fuel cell cycle and a steam cycle

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  • Rokni, Masoud

Abstract

Plant characteristics of a system containing a solid oxide fuel cell (SOFC) cycle on the top of a Rankine cycle were investigated. A desulfurization reactor removes the sulfur content in the fuel, while a pre-reformer broke down the heavier hydrocarbons in an adiabatic steam reformer (ASR). The pre-treated fuel then entered to the anode side of the SOFC. The remaining fuels after the SOFC stacks entered a catalytic burner for further combusting. The burned gases from the burner were then used to produce steam for the Rankine cycle in a heat recovery steam generator (HRSG). The remaining energy of the off-gases was recycled back to the topping cycle for further utilization. Several parameter studies were carried out to investigate the sensitivity of the suggested plant. It was shown that the operation temperature of the desulfurization and the pre-reformer had no effect on the plant efficiency, which was also true when decreasing the anode temperature. However, increasing the cathode temperature had a significant effect on the plant efficiency. In addition, decreasing the SOFC utilization factor from 0.8 to 0.7, increases the plant efficiency by about 6%. An optimal plant efficiency of about 71% was achieved by optimizing the plant.

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  • Rokni, Masoud, 2010. "Plant characteristics of an integrated solid oxide fuel cell cycle and a steam cycle," Energy, Elsevier, vol. 35(12), pages 4691-4699.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:4691-4699
    DOI: 10.1016/j.energy.2010.09.032
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    References listed on IDEAS

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    1. Dunbar, William R. & Lior, Noam & Gaggioli, Richard A., 1991. "Combining fuel cells with fuel-fired power plants for improved exergy efficiency," Energy, Elsevier, vol. 16(10), pages 1259-1274.
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    1. Pierobon, Leonardo & Nguyen, Tuong-Van & Larsen, Ulrik & Haglind, Fredrik & Elmegaard, Brian, 2013. "Multi-objective optimization of organic Rankine cycles for waste heat recovery: Application in an offshore platform," Energy, Elsevier, vol. 58(C), pages 538-549.
    2. Huaiyu Shao, 2017. "Heat Modeling and Material Development of Mg-Based Nanomaterials Combined with Solid Oxide Fuel Cell for Stationary Energy Storage," Energies, MDPI, vol. 10(11), pages 1-11, November.
    3. Rokni, Masoud, 2013. "Thermodynamic analysis of SOFC (solid oxide fuel cell)–Stirling hybrid plants using alternative fuels," Energy, Elsevier, vol. 61(C), pages 87-97.
    4. Park, K. & Hwang, H.K., 2013. "Fabrication and electrical properties of nanocrystalline Dy3+-doped CeO2 for intermediate-temperature solid oxide fuel cells," Energy, Elsevier, vol. 55(C), pages 304-309.
    5. Kim, Dae-Wi & Yun, Ui-Jin & Lee, Jong-Won & Lim, Tak-Hyoung & Lee, Seung-Bok & Park, Seok-Joo & Song, Rak-Hyun & Kim, Guntae, 2014. "Fabrication and operating characteristics of a flat tubular segmented-in-series solid oxide fuel cell unit bundle," Energy, Elsevier, vol. 72(C), pages 215-221.
    6. Masoud Rokni, 2016. "Performance Comparison on Repowering of a Steam Power Plant with Gas Turbines and Solid Oxide Fuel Cells," Energies, MDPI, vol. 9(6), pages 1-22, May.
    7. Bellomare, Filippo & Rokni, Masoud, 2013. "Integration of a municipal solid waste gasification plant with solid oxide fuel cell and gas turbine," Renewable Energy, Elsevier, vol. 55(C), pages 490-500.
    8. Barelli, L. & Ottaviano, A., 2014. "Solid oxide fuel cell technology coupled with methane dry reforming: A viable option for high efficiency plant with reduced CO2 emissions," Energy, Elsevier, vol. 71(C), pages 118-129.
    9. Pierobon, Leonardo & Rokni, Masoud & Larsen, Ulrik & Haglind, Fredrik, 2013. "Thermodynamic analysis of an integrated gasification solid oxide fuel cell plant combined with an organic Rankine cycle," Renewable Energy, Elsevier, vol. 60(C), pages 226-234.
    10. Rokni, Masoud, 2014. "Thermodynamic and thermoeconomic analysis of a system with biomass gasification, solid oxide fuel cell (SOFC) and Stirling engine," Energy, Elsevier, vol. 76(C), pages 19-31.
    11. Vialetto, Giulio & Rokni, Masoud, 2015. "Innovative household systems based on solid oxide fuel cells for a northern European climate," Renewable Energy, Elsevier, vol. 78(C), pages 146-156.
    12. Abid Rabbani & Masoud Rokni, 2014. "Modeling and Analysis of Transport Processes and Efficiency of Combined SOFC and PEMFC Systems," Energies, MDPI, vol. 7(9), pages 1-21, August.
    13. Iliya Krastev Iliev & Antonina Andreevna Filimonova & Andrey Alexandrovich Chichirov & Natalia Dmitrievna Chichirova & Alexander Vadimovich Pechenkin & Artem Sergeevich Vinogradov, 2023. "Theoretical and Experimental Studies of Combined Heat and Power Systems with SOFCs," Energies, MDPI, vol. 16(4), pages 1-17, February.
    14. Mazzucco, Andrea & Rokni, Masoud, 2014. "Thermo-economic analysis of a solid oxide fuel cell and steam injected gas turbine plant integrated with woodchips gasification," Energy, Elsevier, vol. 76(C), pages 114-129.
    15. Rokni, Masoud, 2014. "Biomass gasification integrated with a solid oxide fuel cell and Stirling engine," Energy, Elsevier, vol. 77(C), pages 6-18.

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