Modelling the Dynamic Behaviour of a Planar SOFC CHP System

摘要

For the analysis of transient operation of a solid oxide fuel cell (SOFC) system, such as start-up, load change or shut-down, a system-level dynamic simulation is required. This paper focuses on the development of dynamic models for all SOFC system components using a cascade of continuous stirred tank reactors as a basic modelling element. Modelling details concerning heat transfer or reaction kinetics are considered for individual components. All component models were validated with experimental data. Validation results presented for an air preheater and a reformer show reasonable agreement between measurements and simulations. To demonstrate system-level dynamic simulation, a heat-up simulation of a complete SOFC system is shown.