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Current study deals with the parametric evaluation of combined supercritical organic Rankine cycle and vapour absorption refrigeration cycle driven by solar power tower. It was obtained from the results, exergy and thermal efficiency of the combined system improved with solar irradiation. Maximum thermal and exergy efficiency were obtained 46.60% and 68.25% respectively at 950 W/m 2 while maximum exergy destruction was obtained 7589.46 kW at 500W/m 2. COP of the system decreased with generator and condenser temperature. The maximum COP for heating and cooling were found 1.4452 and 0.4448 respectively at 90°C of generator temperature.

In this paper, thermodynamic parametric analysis of solar driven pre-compression cycle combined with super critical CO2 and organic Rankine cycle using zero ozone depletion (ODP) and ultra low global warming potential (GWP) fluids have been carried out. The thermal model for the above system was developed using low global warming potential fluids and it was found that the thermal performance of the system is increased with the concentration ratio, fluid velocity, and with solar irradiation while decreased with receiver emittance. In terms of thermal performance parameters the R1224yd(E) gives highest performance Maximum exergy efficiency, thermal efficiency and output power were increased from 36.73% to 58.52%, 34.16% to 54.42% and 183kW to 293.5kW respectively when DNI (direct normal irradiation) increased from 0.4 kW/m2 to 0.95 kW/m2 based on R1224yd(E) fluid. R1224yd(E) recommended for the better performance.