| abstract |
The present invention relates to a filling method for a mixed refrigerant, in which in a case of transferring and filling a mixed refrigerant that contains trifluoroethylene and 2,3,3,3-tetrafluoropropene and in which the trifluoroethylene is present in an amount of 10 to 92 mass % in a liquid phase, with respect to a total 100 mass % of the trifluoroethylene and the 2,3,3,3-tetrafluoropropene, in a liquid from a feeding container to a target container and equipment, a liquid phase mixing ratio (initial composition) of the trifluoroethylene in the mixed refrigerant in the feeding container immediately before the transferring and filling is set to x+yP (minimum value) to x % (target upper limit composition). |