An experimental investigation of solid oxide fuel cell performance at variable operating conditions

Abstract

Cell temperature and selection of the reactant gases are crucial parameters for the design and optimization of fuel cell performance. In this study, effect of operating conditions on the performance of solid oxide fuel cell has been investigated. Application of response surface methodology was applied to optimize operations conditions in solid oxide fuel cell. For this purpose, an experimental set-up for testing of solid oxide fuel cell has been established to investigate the effect of hydrogen, oxygen, nitrogen flow rates and cell temperature parameters on cell performance. Hydrogen flow rate, oxygen flow rate, nitrogen flow rate, and cell temperature were the main parameters considered and they were varied between 0.25 and 1 L/min, 0.5 and 1 L/min, 0 and 1 L/min, and 700-800 ºC in the analyses, respectively. The maximum power density was found as 0.572 W/cm 2 in the experiments.

The effect of fluid dynamics conditions and combustion reactions on the performance and heat and mass transfer distribution of dual-phase oxygen transport membranes

“…Inorganic dense ceramic-based OTMs with the advantages of low cost and high oxygen purity have attracted attention because of their applications in solid oxide fuel cells (SOFCs) and catalysts and the production of pure oxygen for many large-scale industrial processes, such as CO 2 capture, coal gasification, oxygen-enriched combustion, and natural gas conversion to syngas etc [1][2][3][4][5][6][7]. Furthermore, it is possible to integrate oxygen separation and a catalytic reaction in a single reactor [8][9][10].…”

On governing equations and closure relations for the multiscale modeling of concentration polarization in solid-oxide fuel cells: mass transfer and concentration-induced voltage losses.

“…(4.53e). Other authors [ 317,318] have proposed similar equations considering this mass source term.…”