Thermodynamic Analysis of Power Generation System Based on Solid Oxide Fuel Cell With External Reforming

Document Type : Research Article

Authors

1 Mechanical Engineering Faculty/University of Tabriz

2 Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran

3 faculty of mechanical engineering, university of tabriz, tabriz, iran

Abstract

Due to the capability of using exhausted gases of power plants directly in the reforming process and producing high-quality syngas, the tri-reforming process is a considerable kind of reforming process. In the present study, a power generation system based on solid oxide fuel cells with specific capacity and equipped to the external reforming is proposed and investigated form the viewpoint of thermodynamics. In order to conduct the external reforming process, exhaust gases from the system including the steam, carbon dioxide and oxygen are recycled and utilized as the reforming agents in the reactor. In order to model the proposed system thermodynamically, the principals of mass and energy balance are applied in engineering equation software. Effects of such important parameters as the current density and solid oxide fuel cell operating temperature on the system performance indicators including the various voltages, fuel mass flow rate, power generation and the energy as well as the exergy efficiencies of the system are investigated. The parametric study results show that for the lower values of the current density e.g. 1000 A/m2 and higher values of the solid oxide fuel cells operating temperature e.g. 900 oC, the system energy and exergy efficiencies enhance up the maximum values of 55.04% and 53.11%, respectively.  

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 1 (Special Issue)
April 2021
Pages 605-622

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