Thermodynamic assessment of a solar organic Rankine cycle (ORC) integrated in a complex system for renewable energy production from natural sources located on Romania’s Danube river near Galati City

The complex system presented and analyzed in the paper refers to a platform that integrates technologies for renewable energy production from water, wind and Sun. The platform can be adapted for coastal/sea and inland river areas. A thermodynamic steady-state analysis of a solar ORC system integrated in such a system located on Romania's Danube river near Galati City, is carried out. The above mentioned ORC system is performed using R1234yf, R1233zd(E), HFE7100 and R290 as working fluids. The input data in the thermodynamic steady-state analysis is correlated with climatic data available for Galati City. Results show that the highest thermal efficiency and energy production of the ORC system are obtained when using R1233zd(E) fluid.