Performance assessment of solar based trigeneration system using organic Rankine cycle and ejector refrigeration system

In this study, a novel trigeneration system was developed to harness high-temperature solar energy from a solar power tower, enabling simultaneous generation of power, heating, and cooling effects.The system comprises a Brayton cycle utilizing helium as the working fluid, complemented by an organic Rankine cycle with an ejector refrigeration system to recover waste heat from the Brayton cycle.Energy, exergy, and exergoenvironmental analyses were conducted on the proposed system using engineering equation solver software.The heating and cooling effects were generated at 50°C and 10°C, respectively for building applications such as hospitals and hostels.The proposed plant was obtained the exergy and energy efficiencies of 25.12% and 23.30%, respectively.Additionally, cooling loads, heating loads and power output were obtained as 8.25 kW, 60.52 kW and 14998 kW, respectively.Moreover, the exergoenvironmental impact coefficient has a high value of 4.028 due to the lower exergy efficiency of the plant.The exergetic stability factor was determined to be 0.2483.