Parametric Study and Optimization of a Solar Driven Combined Cooling Heating and Power Dual Organic Rankine Cycle based on exergoenvironmental Concept

A solar driven combined cooling heating and power systembased on cascade organic Rankine cycle (ORC) is designedand model using the exergy and exergoenvironmentalanalyses. The substantial design parameters are selected toassess the exergetic and environmental performance of theproposed systems. Parametric study imply that turbine 1inlet pressure has a positive effect on both exergetic andenvironmental impact. Multi objective optimization iscarried out to find the optimum performance of system forboth working fluids, i.e. R134a-R245fa and R1234ze-R236fa. Optimization outcomes indicate that maximumimprovement in exergetic efficiency and environmentalimpact within 49.8% and 19.2%, respectively obtained forR1234ze-R236fa.