Effect of Fuel Substitution on Thermal Efficiency Using GateCycle

Biomass is a renewable energy source that can be used to substitute coal. However, in its utilization, the impact of several factors must be investigated. In this study, a simulation was conducted utilizing the GateCycle software to assess the impact of fuel composition modifications on the boiler’s operational efficiency. Simulation results show that changes in fuel composition do not significantly affect boiler efficiency. Co-combustion fuel, blended coal with 5% frond, has low total moisture and high fixed carbon, giving the highest boiler efficiency among other blended fuels. The steam output decreases by 3 - 7 t/h at the same pressure and temperature. Simulation results need to be validated by testing on existing boilers. It is also necessary to investigate the effect of fuel characteristics on slag fouling, which can lead to reduced boiler performance.