| abstract |
There is provided a working fluid and anrefrigerating machine for preventing clogging in andepressurizing mechanism even with use of HFC-basenrefrigerants. A refrigeration circuit 1 is filled with anworking fluid composed of an HFC-base refrigerantncontaining 50 wt% or more R32 and a mixed refrigeratingnmachine oil. The mixed refrigerating machine oil is madenup of a synthetic oil such as an ether oil and an esternoil, and an alkylbenzene-base oil, and the alkylbenzene-basenoil accounts for 1 to 90 wt% of the mixednrefrigerating machine oil. |