Thermodynamic and economic analyses of a syngas-fueled high-temperature fuel cell with recycling processes in novel electricity and freshwater cogeneration plant

Yi Chen, Hossein Niroumandi and Yinying Duan

Energy, 2021, vol. 235, issue C

Abstract: The current paper focuses on the performance characterization of a novel electricity and freshwater cogeneration system. The proposed system includes a solid oxide fuel cell with recycling processes using syngas as its inlet fuel. Owing to waste heat of the fuel cell unit and relying on the multi-heat recovery approach, a gas turbine cycle along with a modified Kalina cycle have been employed to generate electricity, wherein the waste heat of the Kalina cycle has been utilized as the heat source of a HDH desalination subsystem to generate freshwater. Thermodynamic and exergoeconomic analyses have been conducted through a parametric study on the suggested setup. Also, the optimal operating condition and optimum performance criteria are obtained employing multi-objective grey wolf optimization (MOGWO) algorithm. According to the results, the electricity and freshwater generation capacities of the whole setup are found as 366.7 kW and 0.179 kg/s with a total unit exergy cost of 6.48 $/GJ, respectively. Also, the use of such a system increases the energy and exergy efficiencies up to 47.49% and 36.14%, individually. According to optimization results, the optimal values of 49.455% and 4.912 $/GJ are obtained for the exergy efficiency, total unit cost of products, respectively.

Keywords: Biomass gasification; Solid oxide fuel cell; Power and freshwater cogeneration; Thermodynamic and exergoeconomic analyses; Grey wolf optimization (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:235:y:2021:i:c:s0360544221015619

DOI: 10.1016/j.energy.2021.121313

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