This study conducts a 3E (Energy, Exergy, and Economic) analysis of a proposed innovative multi-generation system that integrates refrigeration, heating, and electricity production. Utilizing energy from both parabolic trough and flat plate solar collectors, the system leverages organic Rankine and ejector refrigeration cycles. A selection of working fluids R134A, R227EA, R423A, and R152A were investigated based on their thermodynamic properties. The design of the overall integrated system aims to improve energy conversion efficiency and reduce reliance on fossil fuels, and offer a sustainable energy solution. To evaluate the key parameters of the proposed hybrid system, extensive and detailed mathematical modeling has been developed. A sensitivity analysis revealed that varying the evaporator temperature from −10°C to −2°C result in a maximum energy efficiency of 37.8% with R227EA, while the highest exergy efficiency of 5.3% was recorded using R152A and R134A as the working fluids. A similar trend was observed after adjusting the inlet temperature of vapor generator between 180°C to 220°C, with a maximum energy efficiency of 39.64% for R227EA and the highest exergy efficiency of 5.9% for R152A. Additionally, it was found that increasing the compressor pressure ratio improves the energy efficiency of the integrated system, although exergy efficiency decreases across all working fluids. Overall, this research indicates that the performance of the hybrid system is highly sensitive to operational parameter variations. R134A and R152A were identified as the optimal refrigerants fluids, offering the highest exergy efficiency and the lowest Levelized Cost of Cooling, Heating, and Electricity.
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