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Issue
Korean Journal of Chemical Engineering,
Vol.38, No.12, 2423-2435, 2021
Three-dimensional numerical investigation on the effect of interconnect design on the performance of internal reforming planar solid oxide fuel cell
Hesami H, Borji M, Rezapour J
Nowadays SOFCs have received great attention due to its advantages such as; high efficiency, low emission and fuel flexibility. But its high operating temperature entails thermal stresses and gas sealing problems which intrigues researchers to reduce the working temperature via thermal management, improved fluid flow, and proper interconnect and channel design. In this study, a three-dimensional model of a co - flow internal reforming planar anode - supported solid oxide fuel cell has been developed. The simulation results are discussed to investigate the performance of different kinds of SOFC flow passages with rectangular, trapezoidal and triangular channels. Also in this study, the effect of inlet fuel and air velocity on the cell performance of the different interconnect ducts is investigated. The results showed that the effect of channel geometry at high voltages is small while, at low voltages channel geometry has an important effect on cell performance. By increasing inlet fuel velocity and decreasing inlet air velocity for all channel geometries, the current and power density and temperature difference increase. Also it was found that, the cells with rectangular channels have better performance than the cells with trapezoidal and triangular channels.
Keywords: Solid Oxide Fuel Cell (SOFC); Anode Supported SOFC; Internal Reforming; Interconnect Design
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