Experimental study on the optimum ratio of R22/R23/R14 self-cascade refrigeration system.

From two aspects of numerical optimization calculation and experiment, the influence of different mixing ratios of non-azeotropic refrigerants at -85 ℃ on thermodynamic performance of R22/R23/R14 three-stage automatic cascade refrigeration system was studied, and the optimum mixing ratio of non-azeotropic refrigerants and the optimum operating conditions of the automatic cascade refrigeration system were found. Follow-up research on the three-stage automatic cascade refrigeration system of R22/R23/R14 can provide reference.