Techno-economic and thermodynamic analyses of a novel CCHP system driven by a solid oxide fuel cell integrated with a biomass gasification unit and a double-effect LiBr-water absorption chiller or heat cycle and carbon capture

Abstract

A new energy system that utilizes solid oxide fuel cell (SOFC) and biomass gasification for integrated cooling, heating, and power with carbon capture is being evaluated. The suggested energy system is comprehensively evaluated utilizing the 4E analysis (energy, exergy, economics, and environment) under constant SOFC AC output power of 120 kW. The cooling model’s total energy and exergy efficiency are 67.2% and 48.3%, respectively, while the heating model achieved 71.6% and 49%, respectively. The gasifier, SOFC, WGSMR-burner, HX-1, and HX-3 have the highest exergy destruction, with respective values of 37.78 kW, 6.24 kW, 11.318 kW, 18.42 kW, and 17.536 kW. According to the economic study, if payback is desired within 5 years, the power tariff should be 0.13$/KW, which is roughly comparable to the market price. By varying the effect parameters ER, S/B ratio, and FU, the energy system produced low carbon dioxide emissions of approximately 0.11 to 0.15 t/GJ, which shows that it has limited environmental impact.