COMPOSITIONS FOR HEAT TRANSFER, POSSESSING IMPROVED MIXABILITY WITH LIQUID LUBRICANT Russian patent published in 2016 - IPC C09K5/04 C10M171/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the composition for heat transfer, which contains 2,3,3,3-tetrafluoropropylene, 1,1,1,2-tetrafluoroethane and polyalkyleneglycol, in which polyalkyleneglycol has the viscosity from 1 to 1000 cSt at 40°C, and in which 1,1,1,2-tetrafluoroethane constitutes from 5 to 15 wt % with respect to the sum of 1,1,1,2-tetrafluoroethane and 2,3,3,3-tetrafluoropropylene, present in the composition. Polyethyleneglycol of the specified viscosity is applied as a liquid lubricant in a steam compression circuit in a combination with a heat transfer fluid, containing 1,1,1,2-tetrafluoroethane and 2,3,3,3-tetrafluoropropylene. 1,1,1,2-tetrafluoroethane is applied in the upper said quantity to increase the mixability of 2,3,3,3-tetrafluoropropylene with a liquid lubricant. The invention also relates to the methods of heating or cooling a medium, reduction of impact on the environment of the installation for heat transfer by means of the steam compression circuit, containing the heat transfer fluid of the said composition, as well as to a set for the application in the heat transfer installation, including the steam compression circuit, containing the heat transfer fluid and liquid lubricant.

EFFECT: composition with the increased mixability of the heat transfer fluid with liquid lubricant and possessing considerably reduced global warming potential.

16 cl, 1 dwg, 1 ex