Modeling of Solid Oxide Fuel Cell System (Paperback) (ISBN-13: 9783639235876)

Solid oxide fuel cells (SOFCs) are expected to be widely applicable for both small and large-scale power generation systems. The reason is that the SOFC is simple, highly efficient, tolerant to impurities, and can at least partially internally reform hydrocarbon fuels. A multi-physics, multi-scale model structure is proposed by integrating three submodels, i.e., a macro-continuum model, a micro-scale model (random walk model) and an atomistic-level model. This multi-scale model has the capability of handling transport mechanisms on different length scales at the same time. The coarsest macro-continuum model is first proposed to simulate all energy transport processes in an electrolyte-/anode-supported SOFC. Then a novel micro-level model (random walk model) is developed to investigate the electrochemical performance in a composite electrode. Finally, a multi-scale model by combining the developed macro-level model and micro-level model is proposed for a lower temperature SOFC. Based on this multi-scale model, the dependence of electrochemical performance on the global parameters and micro-structures is assessed for the entire fuel cell stack.

Author: Kun Yuan, Yan Ji
ISBN-10: 3639235878
ISBN-13: 9783639235876
Publisher: VDM Verlag
Language: English
Published: 02/10/2010
Pages: 164
Format: Paperback
Weight: 0.55lbs
Size: 9.00h x 6.00w x 0.38d