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Thermodynamic assessment of a novel SOFC based CCHP system in a wastewater treatment plant

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  • Mehr, A.S.
  • MosayebNezhad, M.
  • Lanzini, A.
  • Yari, M.
  • Mahmoudi, S.M.S.
  • Santarelli, M.

Abstract

Wastewater Treatment Plants (WWTP) have a significant role in both processing wastewaters to return to the water cycle and in transforming between 40% and 60% of the dissolved organic matter into a non-fossil combustible gas (biogas) with a methane content of around 50–70 vol %. Significant energy cost savings can be achieved using combined cooling, heat and power (CCHP) systems in small-scale distributed power system wastewater treatment plants. In this study, feasibility of a trigeneration system in a real wastewater treatment plant is studied. A mathematical model has been developed to evaluate system performance from the thermodynamics point of view. Based on the simulation results, fuel consumption, power production, and thermal efficiency of the system were analyzed. For the proposed configuration, the electricity coverage is increased by 27% and the produced cooling load of around 20 kW in summer season is obtained. The results also reveal that integration of the trilateral cycle (TLC) and the absorption chiller system in the reference WWTP offers a 17.2% more efficient plant from the viewpoint of first law efficiency.

Suggested Citation

  • Mehr, A.S. & MosayebNezhad, M. & Lanzini, A. & Yari, M. & Mahmoudi, S.M.S. & Santarelli, M., 2018. "Thermodynamic assessment of a novel SOFC based CCHP system in a wastewater treatment plant," Energy, Elsevier, vol. 150(C), pages 299-309.
    • Handle: RePEc:eee:energy:v:150:y:2018:i:c:p:299-309
    DOI: 10.1016/j.energy.2018.02.102
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    References listed on IDEAS

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    4. MosayebNezhad, M. & Mehr, A.S. & Lanzini, A. & Misul, D. & Santarelli, M., 2019. "Technology review and thermodynamic performance study of a biogas-fed micro humid air turbine," Renewable Energy, Elsevier, vol. 140(C), pages 407-418.
    5. Ziyang Guo & Yongjun Sun & Shu-Yuan Pan & Pen-Chi Chiang, 2019. "Integration of Green Energy and Advanced Energy-Efficient Technologies for Municipal Wastewater Treatment Plants," IJERPH, MDPI, vol. 16(7), pages 1-29, April.
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    8. Salameh, Tareq & Tawalbeh, Muhammad & Al-Shannag, Mohammad & Saidan, Motasem & Melhem, Khalid Bani & Alkasrawi, Malek, 2020. "Energy saving in the process of bioethanol production from renewable paper mill sludge," Energy, Elsevier, vol. 196(C).
    9. J. Villarroel-Schneider & Anders Malmquist & Joseph A. Araoz & J. Martí-Herrero & Andrew Martin, 2019. "Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine," Energies, MDPI, vol. 12(20), pages 1-30, October.
    10. Su, Bosheng & Han, Wei & Zhang, Xiaosong & Chen, Yi & Wang, Zefeng & Jin, Hongguang, 2018. "Assessment of a combined cooling, heating and power system by synthetic use of biogas and solar energy," Applied Energy, Elsevier, vol. 229(C), pages 922-935.
    11. 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).
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