| 摘要 |
<p>The present invention provides a method for filling a mixed refrigerant, characterized in that, in using as a refrigerant a non-azeotropic mixture comprising 23 to 27% by weight of difluoromethane, 13 to 17% by weight of pentafluoroethane and 58 to 62% by weight of 1,1,1,2-tetrafluoroethane, a mixture stored in a feeding container and comprising 25.5 to 26.0% by weight of difluoromethane, 15.5 to 16.0% by weight of pentafluoroethane and 58.0 to 59.0% by weight of 1,1,1,2-tetrafluoroethane is drawn out from liquid phase in the feeding container and then transferred and filled into a receiving container. According to the method of the present invention, the change in composition caused by transferring and filling the non-azeotropic mixed refrigerant of difluoromethane/pentafluoroethane/ 1,1,1,2-tetrafluoroethane, from the feeding container to air heating and cooling equipment and the like, can be kept within the permissible range of refrigerant performance.</p> |
