Volume 6: Innovative Solutions for Energy Transitions: Part V

Thermodynamic Analysis Of Integrated Energy System Based On Fuel Cell, A Compaerision Research Xinhe Zhang, Guixiong HE, Zhigang Zhang, Xianxu Huo, Tao Zhang, Shupeng Li

Abstract

The combination of a solid oxide fuel cell (SOFC) and a gas turbine (GT) provides high-efficiency power generation solutions and is currently a popular field of research. In this study, a supercritical carbon dioxide Brayton cycle (SCO2BC) was incorporated into an SOFCGT system as a bottom-layer subsystem to absorb the high-temperature exhaust of the GT, with the aim of fully realizing the cascade utilization of energy. Then, process simulation and sensitivity analysis of the SOFC-GTSCO2BC hybrid system were conducted to investigate the effects of five parameters (fuel flow rate, fuel cell operating temperature, gas turbine pressure ratio, fuel utilization factor, and CO2 turbine inlet pressure) on the thermal efficiencies of the hybrid system and its SOFC-GT and SCO2BC subsystems.

Keywords renewable/green energy resources, advanced energy technologies, solid oxide fuel cell, energy systems for power generation, combined energy system, cascade utilization of energy