| 摘要 |
<p>The invention provides a heat transfer composition comprising trans-1, 3,3,3- tetrafluoropropene (R-1234Ze(E)), carbon dioxide (R-744) and a third component selected from d?fluoromethane (R-32), 1,1-d?fluoroethane (R-152a), fluoroethane (R- 161 ), 1,1,1,2-tetrafluoroethane (R-134a), propylene, propane and mixtures thereof.</p> |
