Parametric analysis and optimization for exergoeconomic performance of a combined system based on solid oxide fuel cell-gas turbine and supercritical carbon dioxide Brayton cycle

Yunru Chen, Meng Wang, Vincenzo Liso, Sheila Samsatli, Nouri J. Samsatli, Rui Jing, Jincan Chen, Ning Li, Yingru Zhao

Research output: Contribution to journalArticle

7 Citations (Scopus)
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Abstract

Fuel cell-gas turbine hybrid system is a potential field of investigation. This study establishes a modeling and optimization framework for a novel hybrid system consisting of a solid oxide fuel cell, a gas turbine and a supercritical carbon dioxide Brayton cycle. Based on the proposed thermodynamical model, a parametric analysis is investigated to determine the impacts of several key parameters on the system exergoeconomic performance. Meanwhile, bi-objective optimization is conducted for maximizing the exergy efficiency and minimizing the levelized cost of electricity via the Epsilon-constraint approach. The Linear Programming Techniques for Multidimensional Analysis of Preference decision-making approach is further employed to select the Pareto optimum solution from Pareto frontiers. The results show that several extreme values for the exergy efficiency and the levelized cost of electricity exist in a series of sensitivity curves, respectively. The Pareto frontiers indicates that with the increase of the exergy efficiency, the levelized cost of electricity shows a moderately increasing trend at first and increases rapidly afterward. Overall, at the Pareto optimum solution, the combined system can achieve an optimal exergy efficiency and levelized cost of electricity by 68% and 0.0575 $ kWh −1 , respectively.
Original languageEnglish
Pages (from-to)66-81
Number of pages16
JournalJournal of Energy Conversion and Management
Volume186
Early online date28 Feb 2019
DOIs
Publication statusPublished - 15 Apr 2019

Keywords

  • Exergoeconomic bi-objective
  • Parametric sensitivity analysis
  • Pareto optimization
  • Solid oxide fuel cell-gas turbine
  • Supercritical carbon dioxide Brayton cycle

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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