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 system based on cascade organic Rankine cycle (ORC) is designed and model using the exergy and exergoenvironmental analyses. The substantial design parameters are selected to assess the exergetic and environmental performance of the proposed systems. Parametric study imply that turbine 1 inlet pressure has a positive effect on both exergetic and environmental impact. Multi objective optimization is carried out to find the optimum performance of system for both working fluids, i.e. R134a-R245fa and R1234ze-R236fa. Optimization outcomes indicate that maximum improvement in exergetic efficiency and environmental impact within 49.8% and 19.2%, respectively obtained for R1234ze-R236fa.