| abstract |
The working fluid composition for refrigerators of the present invention contains: a refrigerant containing at least one first refrigerant component selected from difluoromethane and tetrafluoropropene, and a hydrocarbon selected from carbon dioxide and 3 to 4 carbon atoms at least one of the second refrigerant components, and the global warming coefficient is 500 or less; and refrigerating machine oil, which contains at least one selected from polyol esters, polyvinyl ethers, and polyalkylene glycol compounds as A base oil having a carbon/oxygen molar ratio of not less than 2.5 and not more than 5.8. |