18 May 2017

P.4.1.1 Performance Evaluation of a Vapor Injection Refrigeration System Using Mixture Working Fluid R32/R1234ze


This work presents a performance evaluation of a vapor injection refrigeration system using a mixture working fluid R32/R1234ze, through steady-state simulations used to accomplish a parametric analysis considering the influence of the refrigerant composition and vapor injection mass over the following parameters: heating capacity, heating COP; compressor power input, a thermodynamically analytical model on the vapor injection refrigeration system using a mixture working fluid R32/R1234ze was derived. Based on the above research, the prototype was developed and its experimental setup established. A comprehensive experiment for the prototype have been conducted, and the results show that, compared with the single-stage and one working fluid compression system, the vapour injection system using mixture working fluid R32/R1234ze has a better performance for the heating condition not only the heating capacity but also the energy efficiency.