HEAT TRANSFER COMPOSITIONS

摘要

A heat transfer composition comprising: (i) R-1225yeE; (ii) R-32, R-161, or R- 152a; and (iii) at least one further refrigerant selected from carbon dioxide (R-744); fluoromethane (R-41); fluoroethane (R-161); 1,1,1-trifluoroethane (R-143a); 1,1,1,2-tetrafluoroethane (R-134a); 1,1,2,2-tetrafluoroethane (R-134); dimethyl ether; heptafluoropropane (R-227ea); propane (R-290); propene (R-1270); isobutane (R-600a); n-butane (R-600) 2,3,3,3-tetrafluoropropene (R-1234yf); 1,1- difluorocyclopropane; 1,1,2-trifluorocyclopropane; 1,1,2,2- tetrafluorocyclopropane; pentafluorocyclopropane, pentafluoroethane (R-125) or ammonia or mixtures thereof.