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Combining fuel cells with fuel-fired power plants for improved exergy efficiency

Author

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  • Dunbar, William R.
  • Lior, Noam
  • Gaggioli, Richard A.

Abstract

The thermodynamic advantages of fuel-cell systems are studied to: 1.(i) evaluate the increase in plant exergy efficiency when incorporating fuel-cell units into electrical power generating stations and2.(ii) identify and discuss their effect on the components of such plant systems. Topping conventional Rankine cycle power plants with a range of commercial fuel cells is shown to increase the exergetic efficiency of the plant by up to 49%, raising that efficiency from the value of 41.5% for the conventional power plant without fuel cells to about 62% for the fuel-cell-topped power plant. This improvement stems primarily from the improved exergetic efficiency of fuel oxidation in these proposed topping power plants, as contrasted with the highly dissipative combustion process in conventional fuel-fired ones.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:energy:v:16:y:1991:i:10:p:1259-1274
    DOI: 10.1016/0360-5442(91)90155-F
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    1. Habib, M. A. & Said, S. A. M. & Al-Zaharna, I., 1999. "Thermodynamic optimization of reheat regenerative thermal-power plants," Applied Energy, Elsevier, vol. 63(1), pages 17-34, May.
    2. Silveira, José Luz & Martins Leal, Elisângela & Ragonha, Luiz F, 2001. "Analysis of a molten carbonate fuel cell: cogeneration to produce electricity and cold water," Energy, Elsevier, vol. 26(10), pages 891-904.
    3. Chen, Shiyi & Lior, Noam & Xiang, Wenguo, 2015. "Coal gasification integration with solid oxide fuel cell and chemical looping combustion for high-efficiency power generation with inherent CO2 capture," Applied Energy, Elsevier, vol. 146(C), pages 298-312.
    4. Santhanam, S. & Heddrich, M.P. & Riedel, M. & Friedrich, K.A., 2017. "Theoretical and experimental study of Reversible Solid Oxide Cell (r-SOC) systems for energy storage," Energy, Elsevier, vol. 141(C), pages 202-214.
    5. 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.
    6. Taufiq, Bin Nur & Kikuchi, Yasunori & Ishimoto, Takayoshi & Honda, Kuniaki & Koyama, Michihisa, 2015. "Conceptual design of light integrated gasification fuel cell based on thermodynamic process simulation," Applied Energy, Elsevier, vol. 147(C), pages 486-499.
    7. 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.
    8. Rakopoulos, C.D & Kyritsis, D.C, 2001. "Comparative second-law analysis of internal combustion engine operation for methane, methanol, and dodecane fuels," Energy, Elsevier, vol. 26(7), pages 705-722.
    9. Calise, F. & Dentice d’Accadia, M. & Palombo, A. & Vanoli, L., 2006. "Simulation and exergy analysis of a hybrid Solid Oxide Fuel Cell (SOFC)–Gas Turbine System," Energy, Elsevier, vol. 31(15), pages 3278-3299.
    10. 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.
    11. Xenos, Dionysios P. & Hofmann, Philipp & Panopoulos, Kyriakos D. & Kakaras, Emmanuel, 2015. "Detailed transient thermal simulation of a planar SOFC (solid oxide fuel cell) using gPROMS™," Energy, Elsevier, vol. 81(C), pages 84-102.
    12. Calise, F. & Dentice d’ Accadia, M. & Vanoli, L. & von Spakovsky, Michael R., 2007. "Full load synthesis/design optimization of a hybrid SOFC–GT power plant," Energy, Elsevier, vol. 32(4), pages 446-458.
    13. Choudhury, Arnab & Chandra, H. & Arora, A., 2013. "Application of solid oxide fuel cell technology for power generation—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 20(C), pages 430-442.
    14. 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.
    15. Rakopoulos, C.D. & Giakoumis, E.G., 2004. "Availability analysis of a turbocharged diesel engine operating under transient load conditions," Energy, Elsevier, vol. 29(8), pages 1085-1104.
    16. Bang-Møller, C. & Rokni, M. & Elmegaard, B., 2011. "Exergy analysis and optimization of a biomass gasification, solid oxide fuel cell and micro gas turbine hybrid system," Energy, Elsevier, vol. 36(8), pages 4740-4752.
    17. Orlando Corigliano & Leonardo Pagnotta & Petronilla Fragiacomo, 2022. "On the Technology of Solid Oxide Fuel Cell (SOFC) Energy Systems for Stationary Power Generation: A Review," Sustainability, MDPI, vol. 14(22), pages 1-73, November.

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