Academic Analysis And Experimental Study Of The Reverse-Brayton Cycle With Binary Natural Refrigerants And Liquid-suction Heat Exchanger

It is significant for people's existing and development to protect environments and save energy. This thesis proposed for the first time the Reverse-Brayton cycle that uses binary natural refrigerants and liquid-suction heat exchanger and the system were studied both in theory and in experiment.1 . The historical development of Reverse-Brayton cycle , refrigerant alternatives, scroll expander and their current studies at home and abroad were reviewed. Due to these, Brayton cycle with binary natural refrigerants and liquid-suction heat exchanger was put forward;2. Using the RKS equation of gas state, the vapor-liquid equilibrium of iC4H10/C02 binary system and its thermodynamic properties were calculated. Additionally, a set of program is precisely designed and is applicable to Reverse-Brayton cycle with phase-transition;3. The impacts of many parameters on system cycle are studied;4. An experimental apparatus was set up, which can study the flammability of iC4H10;5. A set of apparatus that can study the Reverse-Brayton cycle and carried out many experiments were put up. The experimental results verified the theory prospects;6. At last, some suggestion about the system's further research was proposed.