| 摘要 |
<p>The invention relates to a composition useful as a refrigerant fluid comprising from 60 to 75% by weight of the refrigerant agent pentafluoroethane (R-125); from 15 to 30% by weight of the refrigerant agent 1,1-difluoroethane (R-152a); from 2 to 15% by weight of a refrigerant agent selected from a first group consisting of 1,1,1,2,3,3,3-Heptafluoropropane (R-227ea) and 1,1,1,2-tetrafluoroethane (R-134a) or a mixture of both; and from 0 to 4% by weight of another refrigerant agent selected from a second group consisting of dimethyl ether (DME) and propane (R-290) or a mixture of both. The invention also relates to the use of said composition in a heat transfer system.</p> |
