By simulating the characteristics of non-azeotropic mixtures and pure fluids in a low-temperature waste heat organic Rankin cycle(ORC)

the economic and thermodynamic properties of the mixtures with different proportions were compared with each other and with that of the pure working fluids.The results show that

the cyclic thermal efficiency and mass flow rate of the mixtures in basic ORC system layed between that of each pure fluid.However

after the regenerator was installed

some of the non-azeotropic mixtures had higher thermal efficiency than the pure substance

and the non-azeotropic mixtures had lower pressure ratio and unit power required for UA.For the two-component non-azeotropic mixtures with one of the components be the same

the larger the critical temperature difference between the two components

the greater the thermodynamic performance changed.