Theoretical And Experimental Study Of The Reverse-Brayton Cycle With Multiplex Non-Azeotropic Refrigerants

On the basis of theoretical and experimental study of the Reverse-Brayton Cycle with binary natural refrigerants, this study was put forward. Utilizing the input and output of multiplex non-azeotropic refrigerants and the two phase expandse work of this cycle, this thesis, theoretically and experimentally, analyzed and explored thoroughly the performance of the cycle in the air-condition system .It reviewed initially the research actuality of non-azeotropic refrigerants at home and abroad and the history of Revese-Brayton Cycle. The value of this study, after acquainting the research object and discussing the merits of the cycle and working fluids with thermodynamic view, was further showed.The characteristic analysis of Reverse-Brayton Cycle with ideal gas and the exergy analysis of cycle revealed the feature of Reverse-Broyton Cycle and the matter of every base thermodynamic cycle process, which founded the base of the numerical analysis, and gave the direction of reducing irreversible losses.In order to attain the nature of this research object, by the thermodynamic analysis and selecting refrigerants from the view of thermodynamic, it, used RKS equation of state, carried out simulating the cycle with multiplex non-azeotropic refrigerants, and discussed in details the impacts of many outside restriction on the cycle performance, which involved the component of refrigerants, the inlet temperature and pressure of compressor and expander.Optimizing the former experimental installation, including of changing scroll expander, lubricating oil and the measuring method of the output of the expander work, the experimental study verified the theoretical results. Ultimately, a fewimportant conclusions and problems were obtained, which provide the direction further study.