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Energy and exergy analyses of an ethanol-fueled solid oxide fuel cell for a trigeneration system

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  • Tippawan, Phanicha
  • Arpornwichanop, Amornchai
  • Dincer, Ibrahim

Abstract

This paper examines an integrated SOFC (solid oxide fuel cell) system with an absorption chiller that uses heat recovery of the SOFC exhaust gas for combined cooling, heating, and power production (trigeneration) through energy and exergy analyses. The system consists of an ethanol reformer, SOFCs, an air pre-heater, a steam generator and a double-effect LiBr/H2O absorption chiller. Validation of the SOFC and absorption chiller models is performed by comparison with published data. To assess the system performance and determine the irreversibility in each component, a parametric study of the effects of changing the current density, SOFC temperature, fuel utilization ratio and SOFC anode recirculation ratio on the net electrical efficiency and the efficiency of heating cogeneration, cooling cogeneration and trigeneration is presented. The study shows that in the trigeneration plant, there is at least a 32% gain in efficiency, compared to the conventional power cycle. This study also demonstrates that the proposed trigeneration system represents an attractive option to improve the heat recovery and enhance the exergetic performance of the system.

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  • Tippawan, Phanicha & Arpornwichanop, Amornchai & Dincer, Ibrahim, 2015. "Energy and exergy analyses of an ethanol-fueled solid oxide fuel cell for a trigeneration system," Energy, Elsevier, vol. 87(C), pages 228-239.
    • Handle: RePEc:eee:energy:v:87:y:2015:i:c:p:228-239
    DOI: 10.1016/j.energy.2015.04.072
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    References listed on IDEAS

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    4. Santiago, Thalyta S.A. & Achiles, Ana Elisa & Dangelo, José Vicente H., 2022. "Thermodynamic performance analysis and optimization of a trigeneration system with different configurations applied to a medium-sized hospital," Energy, Elsevier, vol. 239(PC).
    5. Geonhui Gwak & Minwoo Kim & Dohwan Kim & Muhammad Faizan & Kyeongmin Oh & Jaeseung Lee & Jaeyoo Choi & Nammin Lee & Kisung Lim & Hyunchul Ju, 2019. "Performance and Efficiency Analysis of an HT-PEMFC System with an Absorption Chiller for Tri-Generation Applications," Energies, MDPI, vol. 12(5), pages 1-21, March.
    6. Mehr, A.S. & Lanzini, A. & Santarelli, M. & Rosen, Marc A., 2021. "Polygeneration systems based on high temperature fuel cell (MCFC and SOFC) technology: System design, fuel types, modeling and analysis approaches," Energy, Elsevier, vol. 228(C).
    7. Yan, Linbo & Yue, Guangxi & He, Boshu, 2015. "Exergy analysis of a coal/biomass co-hydrogasification based chemical looping power generation system," Energy, Elsevier, vol. 93(P2), pages 1778-1787.
    8. Koo, Taehyung & Kim, Young Sang & Lee, Dongkeun & Yu, Sangseok & Lee, Young Duk, 2021. "System simulation and exergetic analysis of solid oxide fuel cell power generation system with cascade configuration," Energy, Elsevier, vol. 214(C).

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