An effective and simplified method to select the working fluid for waste heat recovery based Organic Rankine Cycle

Organic Rankine Cycle (ORC) is an attractive option to utilize the low-grade waste heat for power generation. The selection of working fluid ORC a challenging task because environmental constraints as most organic fluids has capacity damage environment. In this research, method optimum operation low grade determined. depends upon thermal efficiency, Global Warming Potential (GWP), Ozone Depletion (ODP) and Atmospheric Lifetime fluid. Twelve different including R134a, butene, R22, R152a, R245fa, R290, R161a, isobutene, isobutane, dimethyl ether, R600 R124 are selected study. analyzed by using EES at 2 MPa, 2.5 MPa 3 MPa. efficiency determined found that high operating pressure favorable ORC. At top three R-245fa, R-600 Iso-butene with 12.7%, 12% 11.3% respectively. On basis R-245fa best but it highest GWP atmospheric life 1050 7.7 years. just 20 0.018 constraints, be more beneficial than R-245fa. It concluded