In the present study, a multigeneration system was proposed, integrating solar parabolic trough collectors (PTC), steam Rankine cycles (SRC), thermoelectric generators (TEGs), organic Rankine cycles (ORC), geothermal systems, and vapour absorption refrigeration system (VARS) using solar and geothermal heat. Thermodynamic modelling, including energy, exergy, and exergonomics, was conducted to evaluate power generation efficiency, energy efficiency, and energetic costs across various operational parameters. Parameters such as solar intensity, PTC inlet temperature, boiler pressure, and figureofmerit were employed in this analysis. Seven thermal fluids were analysed, with liquid sodium demonstrating superior performance and cost-effectiveness compared with other heat transfer fluids. The inclusion of TEG provided better performance under fixed input conditions compared with systems without TEG.
