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    Compared Thermal Modeling of Anode- and Electrolyte-Supported SOFC-Gas Turbine Hybrid Systems
    (Asme, 2021) Akroot, Abdulrazzak; Namli, Lutfu; Ozcan, Hasan
    In this study, two solid oxide fuel cell (SOFC) hybrid systems (anode-supported model (ASM) and electrolyte-supported model (ESM)) is developed in matlab(R) and compared. The hybrid system model is considered to investigate the impacts of various operating parameters such as SOFC operating temperature and steam/carbon ratio on power production and performance of the hybrid system where it is projected that results can be utilized as guidelines for optimal hybrid system operation. According to the findings, a maximum 695 kW power is produced at 750 degrees C operating temperature for the anode-supported model, whereas 627 kW power is produced at 1000 degrees C for the electrolyte-supported model. The highest electrical efficiencies for the anode-supported model and the electrolyte-supported model are 64.6% and 58.3%, respectively. Besides, the lower value of the steam to carbon ratio is favorable for increased power output from the fuel cell and consequently a high SOFC efficiency.
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    Performance assessment of an electrolyte-supported and anode- supported planar solid oxide fuel cells hybrid system
    (Yildiz Technical Univ, 2021) Akroot, Abdulrazzak; Namli, Lutfu
    In this study, a system-level zero-dimensional model for planar solid oxide fuel cell- gas turbine (SOFC/GT) hybrid system has been studied to investigate the effect of diverse operating conditions such as operating pressure, air utilization factor (U-a), and fuel utilization factor (U-1) on the performance of a selected hybrid system. Moreover, the system's power production and performance were discussed in two various configurations: anode-supported model (ASM) and electrolyte-supported model (ESM). This study's models were implemented in Matlab' to calculate the optimum operating parameters and determine the hybrid system's performance characteristics. According to the finding, a maximum of 717.8 kW power is produced at 7.7 bar pressure for the ASM. In contrast, a maximum of 630.3 kW power is produced at 12 bar pressure for ESM. The highest electrical system efficiencies for the ASM and the ESM are 62.32% and 56.23%, respectively.