The study analyzed the thermodynamics and environmental performance of a biomass-based solar-assisted trigeneration system for power, cooling, and hot water production. The system uses municipal waste in an incinerator and a solar tower with a gas turbine supplemented by natural gas. It includes an Organic Rankine Cycle (ORC) for power, a vapor absorption system (VAS) for refrigeration, and a gas turbine. The analysis focused on thermodynamic, exergoeconomic, and thermo-environmental perspectives, considering indicators like the exergetic utility index (EUI), exergo thermal index (ETI), waste exergy ratio (WER), and sustainability index (SI). Simulation results show a net output of 6.128 MW, a cooling capacity of 131.1 kW, and a cooling water flow of 65.14 kg/s. The energy and exergy efficiencies are 66.68% and 53%, respectively. The solar tower helps reduce natural gas use by 633.6 kg/h, lowering carbon emissions. Exergy destruction is highest in the incinerator and combustion chamber. The exergoeconomic analysis shows minimal cost reduction in the gas turbine air compressor and incinerator. Thermo-environmental indicators were recorded as EUI 0.6992, ETI 0.9161, WER 1.092, and SI 0.6109, reflecting the system's environmental friendliness due to efficient energy use and low discharge temperatures.
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