| abstract |
This mixed composition for a refrigerator includes: a refrigerant that includes at least one type of unsaturated fluorohydrocarbon compound selected from compounds represented by molecular formula (1) [(1) C p F r H s , wherein p is an integer from 2 to 6, r is an integer from 1 to 11, s is an integer from 1 to 11, and the molecule has one or more unsaturated carbon-carbon bond]; and a refrigerator lubricating oil that contains, as the main component thereof, a polyol ester (A) of C9-C16 fatty acids (a1), which, with respect to the total amount of the fatty acids (a1), are 50 mol% or more C9 fatty acids, and of a polyol (a2) that is pentaerythritol and/or dipentaerythritol. |