NOVELTY - Heat transfer composition comprises: trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)); carbon dioxide (R-744); and a third component consisting of propylene, and/or propane.    USE - The composition is useful: in a heat transfer device including a refrigeration device, automotive air conditioning systems, residential air conditioning systems, commercial air conditioning systems, residential refrigerator systems, residential freezer systems, commercial refrigerator systems, commercial freezer systems, chiller air conditioning systems, chiller refrigeration systems, and commercial or residential heat pump systems; in a blowing agent, a foamable composition or a foam, a sprayable composition, a solvent, and a mechanical power generation device which is adapted to use a Rankine cycle or modification of Rankine cycle to generate work from heat; and for cooling, heating and cleaning an article, extracting a substance from biomass, extracting a material from an aqueous solution or a particulate solid matrix, retrofitting the heat transfer device, generating greenhouse gas emission credit, and reducing environmental impact arising from operation of a product comprising an existing compound or composition, where the product includes the heat transfer device, the blowing agent, the foamable composition, the sprayable composition, the solvent, and the mechanical power generation device (all claimed).    ADVANTAGE - The heat transfer composition: is non-flammable, non-corrosive and free from objectionable odor; and has low toxicity, high stability, reduced global-warming potential, improved energy efficiency and miscibility and good refrigeration performance, and reduces the environmental impact.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a heat transfer device containing the composition;    (2) a foamable composition comprising one or more components capable of forming foam comprising polyurethanes, thermoplastic polymers and resins and/or epoxy resins, and the composition;    (3) a sprayable composition comprising a material to be sprayed, and a propellant comprising the composition;    (4) a method-1 for cooling an article, comprising condensing the composition, and evaporating the composition in a vicinity of an article to be cooled;    (5) a method-2 for heating an article, comprising condensing the composition in a vicinity of the article to be heated, and evaporating the composition;    (6) a method-3 for extracting a substance from biomass, comprising contacting a biomass with a solvent comprising the composition, and separating the substance from the solvent;    (7) a method-4 of cleaning an article, comprising contacting the article with a solvent comprising the composition;    (8) a method-5 of extracting a material from an aqueous solution or a particulate solid matrix, comprising contacting one of the aqueous solution and the particulate solid matrix with the solvent comprising the composition, and separating the material from the solvent;    (9) a method-6 of retrofitting a heat transfer device, comprising removing at least some of an existing heat transfer fluid from the heat transfer device, and introducing the composition into the heat transfer device;    (10) a method-7 for reducing environmental impact arising from operation of a product comprising an existing compound or composition, comprising replacing at least partially the existing compound or composition with the composition;    (11) a method-8 for preparing a heat transfer device containing 1,1,1,2-tetrafluoroethane (R-134a), comprising introducing the composition to claim 1 into the heat transfer device; and    (12) a method-9 for generating greenhouse gas emission credit, comprising replacing an existing compound or composition with the composition, where the composition has a lower GWP than the existing compound or composition, and obtaining greenhouse gas emission credit for the replacing step.