| 摘要 |
PROBLEM TO BE SOLVED: To provide a working fluid composition for a refrigerator, which has less adverse effect on the environment, and can achieve compatibility, thermal and chemical stability, and lubricity at a high level in a highly efficient system.SOLUTION: The working fluid composition for the refrigerator includes: a cooling medium containing monofluoroethane; and a refrigerating machine oil that contains at least one oil selected from a mineral oil in which %Cby an n-d-M ring analysis is 10-60 and a flow point is -15°C or lower, and a synthetic hydrocarbon oil in which a flow point is -15°C or lower as a base oil, and that has a kinematic viscosity at 40°C of 3-500 mm/s. |
