Theoretical And Experimental Study On New Refrigerant Mixture HFC-161/227ea

The disadvantages of the traditional refrigerants on environmental protection and the difficulties in exploring the pure refrigerant make alternative refrigerant researchers focus their eyes on HFCs mixtures.Among HFCs mixtures, HFC-161 is a kind of environmental benign refrigerant with excellent thermal properties. In this work, HFC-161 was employed as the main component, and HFC-227ea was introduced as an antiflaming component. The binary mixture HFC-161/227ea was first put forward as a new refrigerant mixture in this thesis.Thermal properties and cycle performance of HFC-161/227ea mixture were studied by a theoretical model. The calculation results show that the basic cycle performance parameters, such as COP and discharge temperature, overmatch R407C. Theoretical optimization on mixture ratio was conducted and the HFC-161/227ea (50/50 wt %) was recommended as the most potential alternative refrigerant to R407C.Under a set of working conditions, the head-to-head performance rating tests between HFC-161/227ea (51.3/48.7 wt %) and R407C were conducted on the electric calorimeter apparatus designed according to GB5773-2004.The experimental results confirmed that the discharge temperature of HFC-161/227ea (51.3/48.7 wt %) was enormously less than that of R407C in the whole test working conditions; the experimental results also confirmed that the refrigeration capacity of HFC-161/227ea (51.3/48.7 wt %) was less than that of R407C. The COP of the HFC-161/227ea (51.3/48.7 wt %) was not always higher than R407C in some of the test conditions.