Phase equilibrium of R1234yf and R1234ze(E) with POE lubricant and thermodynamic performance on the evaporator

R1234yf and R1234ze(E) as green refrigerants have attracted wide attention. Phase behavior of refrigerant/oil and oil circulating mass fraction are critical to the performance and reliability of refrigeration systems. Using isochoric saturation method, the solubilities were measured for R1234yf and R1234ze(E) in POE75 from 278.15 to 348.15 K. The pressure–enthalpy–vapor quality diagrams for pure refrigerants (R1234yf and R1234ze(E)) and...