Efficiency Improvement and Comparative Studies of Solar Organic Rankine Systems using Nanofluids

Solar power generation has emerged as one of the most rapidly growing sources renewable energy. The solar thermal system with a Rankine cycle used to harness energy and generate electricity from low temperature heat source is an emerging technology. major drawback its poor efficiency, which around 10% 15%. Although prior attempts improve efficiency use Nano fluids in transfer applications have been carried out, very little work out using systems. Thus, objective research undertaken was primarily small-scale by selecting working fluids, optimizing parameters improved properties for capturing heat. Thermodynamic simulation tool Aspen Hysys carry simulations Regenerative simulated combinations Dowtherm-Cu O/Ag/Al2O3/TiO2 fluid, n-butane, n-pentane, n-hexane, or R-134a fluid. System such mass flow, temperature, pressure were optimized obtain maximum output keeping constraints practicality mind. fluid exchanger 50%. basic determined 16.03% 14.90% 13.83% 9.82% Further, regeneration 6%, 3 %, 7% 2% respectively. Highest 27.96% obtained when 6% volume concentration Al2O3 n-pentane cycle.