Energy Efficiency Improvement Analysis Considering Environmental Aspects in Regard to Biomass Gasification PSOFC/GT Power Generation System

Abstract The environmental aspects of PSOFC/GT hybrid systems, has been less attention from researchers. In this research, increasing efficiency approaches and environmental aspects is considered on a novel considerable hybrid cycle capacity is determined with 1.7 MW which used biomass fuel as a part of system fuel requirement, for small scale industrial factories end users. In this research, the suggested PSOFC/GT combined system has been modelled with Cycle-Tempo software and calculated total cycle energy and mass balance. The main outputs of the model, are the system electrical energy and exergy and total cycle efficiencies and the amount of solid and gaseous emissions those values and their improvement conditions of each approach is obtained. The survey results showed that in order to increase efficiency and reduce emissions in these systems, wood chips and bagasse can be used as an alternative fuels. Also, by adding an air cooling system, it was found that reducing emissions does not lead to increased efficiency. Finally, with inlet air humidifying of the gasifier system, the total cycle efficiency increases 7.7%. This approach thereby will be reducing carbon emissions and toxic gases like COS and H2S, equal to 6.66% and 9.61×10-3 tons per year respectively and increase annually of NH3 5.82×10-2 tons.