Use of zero-dimensional modelling to predict performance and assess feasibility of solid oxide fuel cell-gas turbine hybrid system

Abstract

This study looks at a steady state and a dynamic model of a solid oxide fuel cell-gas turbine (SOFC-GT) system. The steady state model is used to perform a sensitivity analysis of the system’s electrical efficiency to design parameters at design point, while the dynamic model is used to predict key performance indicators across the operating range of the system. Electrical efficiency at the design point was found to be most sensitive to gas turbine pressure ratio and SOFC temperature. Power output was increased from the baseline to peak on the dynamic model and peak electrical efficiency was found to be 0.61 at 58% load.