FIELD: refrigeration equipment.
SUBSTANCE: invention relates to a cooling method including operation of a refrigeration cycle, in which an evaporation temperature is from -75 to -5°C, using a refrigerant composition containing a refrigerant. In this case, the refrigerant contains trans-1,2-difluorethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluorpropene (HFO-1234yf), where HFO-1132 (E) is present in amount from 35.0 to 65.0% by wt., and HFO-1234yf is present in amount from 65.0 to 35.0% by wt. per the total weight of HFO-1132 (E) and HFO-1234yf. The invention also relates to options of a refrigerant composition, a cooling method, a method for operation of a refrigeration unit, a refrigeration unit.
EFFECT: composition has a coefficient of performance (COP) and cooling capacity equivalent or higher than a coefficient of performance and cooling capacity of R404A and R134a, and it has sufficiently low GWP.
32 cl, 1 dwg, 13 tbl
