WORKING FLUID COMPOSITION FOR REFRIGERATOR, REFRIGERATION OIL, AND METHOD FOR PRODUCING SAME

摘要

The working fluid composition for a refrigerating machine of the present invention comprises: a refrigerating machine oil comprising a mineral oil and an alkylbenzene in a mass ratio, the mineral oil/the alkylbenzene, of 85/15 to 15/85, wherein the mineral oil has a %C N by n-d-M ring analysis of 20 to 60, a pour point of -15°C or less and a kinematic viscosity at 40°C of 1.5 to 15 mm 2 /s; and a hydrocarbon refrigerant having 2 to 4 carbon atoms, wherein the refrigerating machine oil having a kinematic viscosity at 40°C of 2 to 12 mm 2 /s and a flash point of 120°C or more.