COMPOSITIONS

Abstract

A composition comprising trifluoroiodomethane (CF3I) and 1,1-difluoroethylene (R-1132a) is described.The composition may also comprise additional compounds, such as at least one non-flammable compound selected from the group consisting of carbon dioxide (CO2; R-744), tetrafluoromethane (R-14), trifluoromethane (R-23) and perfluoroethane (R-116) or at least one additional compound of lower volatility than 1,1-difluoroethylene selected from the group consisting of 1,1,2-trifluoroethylene (R-1123), difluoromethane (R-32), propane (R-290), propylene (R-1270), fluoroethane (R-161), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 2,3,3,3-tetrafluoropropene (R-1234yf), isobutane (R-600a), n-butane (R-600), trans-1,3,3,3-tetrafluopropene (R-1234ze(E)), 3,3,3-trifluoropropene (R-1243zf), 1,2,3,3,3-pentafluoropropene (R-1225ye), 1,1,1,2,3,3,3-heptafluoropropane (R-227ea), 1,1-difluoroethane (R-152a), cis-1,3,3,3-tetrafluopropene (R-1234ze(Z)), 1-chloro-3,3,3-trifluoropropene (R-1233zd(E / Z)) and 1,1,1,4,4,4-hexafluoro-2-butene (R-1336mzz (E / Z)).The compositions are useful as refrigerants in vapor compression heat transfer systems.

Description

COMPOSITIONS FIELD OF INVENTION The present invention relates to compositions and more particularly to refrigerant compositions comprising 1,1-difluoroethylene (R-1132a; vinylidene fluoride) and trifluoroiodomethane (CF3I) that are useful as working fluids in vapor compression cycles for refrigeration, air conditioning and heat pump applications. BACKGROUND OF THE INVENTION The use of trifluoroiodomethane (CF3I) has been proposed as a refrigerant. The appeal of CF3I as a refrigerant component is its ability to chemically suppress the flammability of flammable refrigerants with which it is mixed. Blends already exist comprising flammable refrigerants, such as R-1234yf (2,3,3,3-tetrafluoropropene), with non-flammable refrigerants, such as R-134a (1,1,1,2-tetrafluoroethane). However, in the absence of any chemical flame suppression effect, flammability can only be mitigated by physical dilution with the non-flammable refrigerant. This means that even a weakly flammable refrigerant like R-1234yf must be mixed in nearly 50 / 50 proportions with the non-flammable R-134a.Furthermore, since non-flammable fluorinated refrigerants such as R-134a and R-125 tend to have a high Global Warming Potential (GWP), a non-flammable blend comprising at least one low-GWP flammable refrigerant such as R-1234yf and a fluorinated non-flammable refrigerant will still have a relatively high GWP compared to the flammable refrigerant alone. Regulations restricting the amount of high-GWP refrigerants that can be used already exist in Europe and are pending in the Kigali Amendment to the Montreal Protocol. As a result, it is desirable to find blends, and preferably non-flammable blends, with lower GWPs than those currently available. Trifluoroiodomethane has a very low effective GWP and is therefore potentially interesting for suppressing the flammability of any flammable refrigerant with which it is blended in binary, ternary, and higher refrigerant blends. 1,1-Difluoroethylene is a high-capacity, flammable refrigerant with a boiling point of -83 °C. It is classified by ASHRAE as a Class 2 flammability refrigerant according to the ASHRAE 34:2016 test method. Non-flammable refrigerants have traditionally been considered the most desirable and versatile refrigerant class, but the growing demand for refrigerants with very low GWP means there is increasing acceptance of refrigerants that are flammable but whose flammability is reduced compared to highly flammable refrigerants like propane or even moderately flammable refrigerants. In particular, the industry is now considering the use of refrigerants classified as “weakly flammable” (2L) by ASHRAE Standard 34:2016. Several manufacturers already offer equipment for refrigeration, air conditioning, and heat pump applications using 2L flammability class refrigerants. 2L refrigerants are distinguished from other moderately flammable refrigerants by exhibiting a low combustion velocity of less than 10 cm / s. There is a need for a non-flammable or mildly flammable refrigerant composition with a low GWP that can operate effectively in vapor-compression cycles for refrigeration, air conditioning, and heat pump applications. Specifically, there is a need for a non-flammable or mildly flammable refrigerant composition that utilizes the beneficial properties of 1,1-difluoroethylene (R-1132a), and in particular, its high cooling capacity. BRIEF DESCRIPTION OF THE INVENTION We have found that compositions comprising 1,1-difluoroethylene (R-1132a; vinylidene fluoride) and trifluoroiodomethane (CF3I), and preferably at least one additional refrigerant, are useful as working fluids in vapor-compression cycles for refrigeration, air conditioning, and heat pump applications. Furthermore, the non-flammable trifluoroiodomethane can, in preferred embodiments, effectively suppress the flammability of flammable refrigerants, including the 1,1-difluoroethylene contained in the compositions, resulting in refrigerant compositions that are weakly flammable (flammability class 2L) and preferably non-flammable as determined in accordance with the test method in ASHRAE Standard 34:2016.The compositions can also be used as solvents, foam blowing agents, propellants, degreasing agents, and as working fluids in Organic Rankine Cycle equipment for the generation of mechanical or electrical power. Accordingly, one aspect of the present invention provides a composition, especially a refrigerant composition, comprising 1,1-difluoroethylene (R-1132a) and trifluoroiodomethane (CF3I). DETAILED DESCRIPTION OF THE INVENTION As used herein, all percentage quantities mentioned in the compositions herein, including in the claims, are by weight based on the total weight of the compositions, unless otherwise stated. For the avoidance of doubt, it should be understood that the upper and lower values ​​established for the ranges of the quantities of the components in the compositions of the invention described herein may be interchanged in any way, provided that the resulting ranges are within the broader scope of the invention. The terms binary, ternary, quaternary and the like as used herein in connection with the compositions of the present invention include the meaning that such compositions may comprise a certain amount of other components, for example, impurities and / or additives, such as those resulting from the manufacture of said compositions and / or from the implementation of the compositions of the invention. ntzbcnn / i ζπζ / β / υιλι In one embodiment, the compositions of the invention defined as binary, ternary, quaternary and / or any other composition of the invention described herein, may essentially consist of the indicated components. The expression "consist essentially of" includes the meaning that the compositions of the invention do not contain substantially any other component, in particular any additional (hydro)(fluoro) compounds (e.g., (hydro)(fluoro)alkanes or (hydro)(fluoro)alkenes) known for use in heat transfer compositions. The expression "consist of" is included within the meaning of "consist essentially of." In one embodiment, the compositions of the invention are substantially free of any component having heat transfer properties (other than the specified components). For example, the compositions of the invention may be substantially free of any other hydrofluorocarbon compound. In substantially not and substantially free from, it is included that the compositions of the invention contain 0.5% by weight or less of the indicated component, preferably 0.1% by weight or less, based on the total weight of the composition. In a preferred embodiment, the composition of the present invention is a binary composition of 1,1-difluoroethylene (R-1132a) and trifluoroiodomethane (CFsl). Such compositions will typically comprise from 1 to 95 wt%, for example, from 1 to 50 wt%, of trifluoroiodomethane and from 99 to 5 wt%, for example, from 99 to 50 wt%, of 1,1-difluoroethylene based on the total weight of the composition. The preferred binary compositions comprise 1 to 40 wt% trifluoroiodomethane and 99 to 60 wt% 1,1-difluoroethylene, more preferably 1 to 30 wt% trifluoroiodomethane and 99 to 70 wt% 1,1-difluoroethylene, and particularly 1 to 20 wt% trifluoroiodomethane and 99 to 80 wt% 1,1-difluoroethylene. The weight percentages quoted above are based on the total weight of the composition. The binary mixtures are preferably nonflammable or only slightly flammable as determined by the test method in ASHRAE Standard 34:2016. In a preferred embodiment, 1,1-difluoroethylene (R-1132a) and trifluoroiodomethane (CF3I) are blended with one or more additional refrigerant compounds to provide ternary and higher blends Accordingly, another aspect of the present invention provides a ternary or higher composition, especially a ternary or higher refrigerant composition, comprising 1,1-difluoroethylene (R-1132a), trifluoroiodomethane (CF3I) and at least one non-flammable compound selected from the group consisting of carbon dioxide (CO2; R-744), tetrafluoromethane (R-14), trifluoromethane (R-23) and perfluoroethane (R-116). Such compositions will typically comprise from 1 to 95% by weight, for example, from 1 to 50% by weight of trifluoroiodomethane and from 99 to 5% by weight, for example, from 99 to 50% by weight of 1,1-difluoroethylene and at least one non-flammable compound selected from the group consisting of carbon dioxide, tetrafluoromethane, trifluoromethane and perfluoroethane based on the total weight of the composition. In one embodiment, the compositions of the present invention comprise 99 to 70% by weight of CF3I and 1 to 30% by weight of R-1132a, preferably 99 to 80% by weight of CF3I and 1 to 20% by weight of R-1132a, for example, 97 to 85% by weight of CF3I and 3 to 15% by weight of R-1132a, based on the total weight of the composition. The preferred compositions comprise 1 to 40 wt% trifluoroiodomethane and 99 to 60 wt% 1,1-difluoroethylene and at least one non-flammable compound selected from the group consisting of carbon dioxide, tetrafluoromethane, trifluoromethane and perfluoroethane, more preferably 1 to 30 wt% trifluoroiodomethane and 99 to 70 wt% 1,1-difluoroethylene and at least one non-flammable compound, and particularly 1 to 20 wt% trifluoroiodomethane and 99 to 80 wt% 1,1-difluoroethylene and at least one non-flammable compound. The weight percentages quoted above are based on the total weight of the composition. ntzbcnn / i ζπζ / β / υιλι The amount of at least one nonflammable compound selected from the group consisting of carbon dioxide, tetrafluoromethane, trifluoromethane, and perfluoroethane in the composition is preferably selected so that the composition is only weakly flammable and preferably nonflammable as determined by the test method in ASHRAE Standard 34:2016. More preferably, the amount of at least one non-flammable compound selected from the group consisting of carbon dioxide, tetrafluoromethane, trifluoromethane, and perfluoroethane in the composition is selected to ensure that if the overall composition is maintained in two-phase equilibrium, i.e., with both liquid and vapor phases present, for example, in a cylinder or vapor compression system, then the vapor phase composition will still be non-flammable. Another aspect of the present invention provides a ternary or higher composition, especially a ternary or higher refrigerant composition, comprising 1,1-difluoroethylene (R-1132a), trifluoroiodomethane (CF3I), and at least one compound of lower volatility than 1,1-difluoroethylene selected from the group consisting of 1,1,2-trifluoroethylene (R-1123), difluoromethane (R-32), propane (R-290), propylene (R-1270), fluoroethane (R-161), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 2,3,3,3-tetrafluoropropene (R-1234yf), isobutane (R-600a), n-butane (R-600), and trans-1,3,3,3-tetrafluoropropene. (R-1234ze(E)), 3,3,3trifluoropropene (R-1243zf), 1,2,3,3,3-pentafluoropropene (R-1225ye), 1,1,1,2,3,3,3heptafluoropropane (R-227ea), 1,1-difluoroethane (R-152a), cis-1,3,3,3tetrafluopropene (R-1234ze(Z)), 1-chloro-3,3,3-trifluoropropene (R-1233zd(E / Z)) and 1,1,1,4,4,4-hexafluoro-2-butene (R-1336mzz (E / Z)). Such compositions will typically comprise from 1 to 95% by weight, for example, from 1 to 50% by weight of CF3I and from 99 to 5% by weight, for example, from 99 to 50% by weight of R-1132a and at least one compound of lower volatility than R1132a based on the total weight of the composition. ntzbcnn / i ζπζ / β / υιλι The preferred compositions comprise 1 to 40 wt% CF3I and 99 to 60 wt% R-1132a and at least one compound of lower volatility than R-1132a, more preferably 1 to 30 wt% CF3I and 99 to 70 wt% R-1132a and at least one compound of lower volatility, and particularly 1 to 20 wt% CF3I and 99 to 80 wt% R-1132a and at least one compound of lower volatility. The weight percentages quoted above are based on the total weight of the composition. In one embodiment, the compositions of the invention contain R-1132a in an amount of approximately 1 to approximately 40% by weight, preferably approximately 1 to approximately 30% by weight, such as approximately 1 to approximately 20% by weight, for example, approximately 1 to approximately 10% by weight, based on the total weight of the composition. Preferably, CF3I is present in the composition in an amount of approximately 1 to approximately 70% by weight, preferably approximately 1 to approximately 60% by weight, such as approximately 1 to approximately 50 or 40% by weight, for example, approximately 1 to approximately 30% by weight, based on the total weight of the composition. Certain preferred compositions according to this modality include those comprising: from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 30% by weight of R-1123; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 70% by weight of CF3I and from approximately 1 to approximately 50% by weight of R-32; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of ntzbcnn / i ζπζ / β / υιλι approximately 1 to approximately 5% by weight of R-290; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 20% by weight of R-125; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-1270; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-134a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-1234ze(E); from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 20% by weight of R-227ea or from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-152a. The compositions of the invention may further comprise CO2. When included, the CO2 is typically present in an amount of approximately 1 to approximately 40% by weight, preferably from approximately 1 to approximately 30% by weight, such as from approximately 1 to approximately 20% by weight, for example, from approximately 1 to approximately 10% by weight, based on the total weight of the composition. Preferred compositions containing CO2 include the following compositions comprising: from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 70% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 40% by weight of CO2; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 40% by weight of CO2; n^Hcnn / i ζπζ / β / υιλι of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 40% by weight of R-134a and of approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-1234yf and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-227ea and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-152a and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 40% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-32 and from approximately 1 to approximately 20% by weight of CO2 and from approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 40% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-32 and from approximately 1 to approximately 20% by weight of CO2 and from approximately 1 to approximately 40% by weight of R-1234ze(E) or from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 40% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-32 and from approximately 1 to approximately 20% by weight of CO2 and from approximately 1 to approximately 40% by weight of R-152a. ntzbcnn / i ζπζ / β / υιλι Other preferred compositions according to the present invention include those comprising: from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 70% by weight of CF3I, from approximately 1 to approximately 30% by weight of R-1123 and from approximately 1 to approximately 60% by weight of R-32; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 30% by weight of R-1123 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-290; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 20% by weight of R-125; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 30% by weight of R-1123 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-1270; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 40% by weight of R-134a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 50% by weight of R-1234yf; nbfccnn / i ζπζ / β / υιλι of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 40% by weight of R-1123 and of approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 40% by weight of R-152a; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 50% by weight of R-32 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-290; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 70% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 20% by weight of R-125; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 50% by weight of R-32 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-1270; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of R-134a; n^Hcnn / i ζπζ / β / υιλι of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 50% by weight of R-32 and of approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of R-152a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 20% by weight of R-125; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-290 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 40% by weight of R-134a; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-290 and of approximately 1 to approximately 50% by weight of R-1234yf; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-290 and of approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 50% by weight of R-152a; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight of R-125 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-1270; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 40% by weight of R-134a; nbfccnn / i ζπζ / β / υιλι of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight of R-125 and of approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 50% by weight of R-152a; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 40% by weight of R-134a; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 50% by weight of R-1234yf; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 50% by weight of R-227ea; nbfccnn / i ζπζ / β / υιλι of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 50% by weight of R-152a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-134a and from approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-134a and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-134a and from approximately 1 to approximately 50% by weight of R-152a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-1234yf and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-1234yf and from approximately 1 to approximately 50% by weight of R-152a or from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-227ea and from approximately 1 to approximately 40% by weight of R-152a; ntzbcnn / i ζπζ / β / υιλι In one embodiment, the compositions of the present invention comprise CF3I, R-1132a and R-1234yf, preferably from 15 to 98 wt% of CF3I, from 1 to 15 wt% of R-1132a and from 1 to 80 wt% of R-1234yf, such as from 25 to 87 wt% of CF3I, from 3 to 10 wt% of R-1132a and from 5 to 75 wt% of R-1234yf based on the total weight of the composition. In another embodiment, the compositions of the present invention comprise CF3I, R-1132a, R-32 and R-1234yf, preferably from 15 to 97 wt% of CF3I, from 1 to 15 wt% of R-1132a, from 1 to 20 wt% of R-32 and from 1 to 70 wt% of R-1234yf, such as from 28 to 82 wt% of CF3I, from 3 to 10 wt% of R-1132a, from 5 to 12 wt% of R-32 and from 5 to 60 wt% of R-1234yf based on the total weight of the composition. The compositions of the invention may also comprise a stabilizer, for example, as described in US patent 2018 / 0244969 in paragraphs

[0350] to

[0361] . When a stabilizer is included, the amounts in the composition of the invention are typically in the range of 0.001 to 10.0% by weight, preferably in the range of 0.001 to 5.0% by weight, more preferably in the range of 0.01 to 3.0% by weight, and particularly in the range of 0.1 to 2.0% by weight based on the total weight of the composition. The compositions of the present invention preferably have zero ozone depletion potential. Typically, the compositions of the invention have a GWP of less than approximately 650, such as less than approximately 500, for example, less than approximately 400. Preferably, the compositions of the invention have a GWP of less than approximately 300, such as less than approximately 200, for example, less than approximately 150. The compositions of the invention preferably have a temperature glide in an evaporator or condenser of less than approximately 15 K, even more preferably less than approximately 10 K and even more preferably less than approximately 5 K. nb+cnn / i ζπζ / β / υιλι In one embodiment, the compositions may consist essentially of the indicated components. The expression "consists essentially of" includes the meaning that the compositions of the invention do not contain substantially any other component, in particular any additional (hydro)(fluoro) compounds (e.g., (hydro)(fluoro)alkanes or (hydro)(fluoro)alkenes) known for use in heat transfer compositions. The expression "consists of" is included within the meaning of "consists essentially of." Typically, the compositions of the invention have a reduced risk of flammability compared to R-1132a. Flammability can be determined in accordance with ASHRAE Standard 34, which incorporates ASTM Standard E-681 with the test methodology according to Annex 34p of 2004, the full content of which is incorporated in this description as a reference. In one aspect, the compositions have one or more of (a) a higher lower flammability limit; (b) a higher ignition energy; (c) a higher auto-ignition temperature; or (d) a lower flame rate compared to R-1132a alone. Preferably, the compositions of the invention are less flammable compared to R-1132a in one or more of the following aspects: lower flammability limit at 23°C; lower flammability limit at 60°C; width of the flammability range at 23°C or 60°C; auto-ignition temperature (thermal decomposition temperature); minimum ignition energy in dry air; or combustion rate. The flammability limits and combustion rate are determined in accordance with the methods specified in ASHRAE-34, and the auto-ignition temperature is determined in a 500 ml glass flask by the method of ASTM E659-78. In a preferred embodiment, the compositions of the invention are nonflammable. For example, the compositions of the invention are nonflammable at a test temperature of 60°C using the ASHRAE-34 methodology. Advantageously, vapor mixtures existing in equilibrium with the compositions of the invention at any temperature between approximately 20°C and 60°C are also nonflammable. ntzbcnn / i ζπζ / β / υιλι In some applications, it may not be necessary for the formulation to be classified as nonflammable according to ASHRAE-34 methodology. It is possible to develop fluids whose flammability limits are sufficiently reduced in air to make them safe for use in the application, for example, if it is not physically possible to produce a flammable mixture due to leakage of the refrigerant charge into the surrounding area. In one embodiment, the compositions of the invention have a flammability classifiable as 1 or 2L according to the classification method of ASHRAE Standard 34, which indicates that they exhibit no flammability (class 1) or a weakly flammable fluid with a flame speed of less than 10 cm / s (class 2L). The compositions of the invention are believed to exhibit a completely unexpected combination of low / non-flammability, low GWP, lubricant miscibility properties, and improved cooling performance. Some of these cooling performance properties are explained in more detail below. The compositions of the invention are typically suitable for use in existing equipment designs and are compatible with all classes of lubricants currently used with established HFC refrigerants. They can optionally be stabilized or made compatible with mineral oils through the use of appropriate additives. In one embodiment, the invention provides a heat transfer device comprising a composition of the invention. Preferably, the heat transfer device is a cooling device. Conveniently, the heat transfer device is a residential or commercial air conditioning system, a heat pump, or a commercial or industrial refrigeration system. The invention also provides for the use of a composition of the invention in a heat transfer device, such as a refrigeration system, as described herein. ntzbcnn / i ζπζ / β / υιλι According to another aspect of the invention, a pulverizable composition is provided comprising a pulverizable material and a propellant comprising a composition of the invention. According to a further aspect of the invention, a method for cooling an article is provided comprising condensing a composition of the invention and then evaporating said composition in the vicinity of the article to be cooled. According to another aspect of the invention, a method for heating an article is provided comprising condensing a composition of the invention in the vicinity of the article to be heated and then evaporating said composition. According to another aspect of the invention, a method is provided for extracting a substance from biomass comprising contacting the biomass with a solvent comprising a composition of the invention and separating the substance from the solvent. According to another aspect of the invention, a method is provided for cleaning an article comprising contacting the article with a solvent comprising a composition of the invention. According to a further aspect of the invention, a method is provided for extracting a material from an aqueous solution comprising contacting the aqueous solution with a solvent comprising a composition of the invention and separating the material from the solvent. According to another aspect of the invention, a method is provided for extracting a material from a solid particle matrix comprising contacting the solid particle matrix with a solvent comprising a composition of the invention and separating the material from the solvent. According to another aspect of the invention, a mechanical power-generating device containing a composition of the invention is provided. Preferably, the mechanical power-generating device is adapted to use a Rankine cycle or a modification thereof to generate work from heat. ntzbcnn / i ζπζ / β / υιλι According to another aspect of the invention, a method is provided for retrofitting a heat transfer device comprising the step of removing an existing heat transfer fluid and introducing a composition of the invention. Preferably, the heat transfer device is a cooling device, such as an ultra-low temperature refrigeration system. Advantageously, the method further comprises the step of obtaining a greenhouse gas (e.g., carbon dioxide) emission credit allocation. According to the retrofitting method described above, an existing heat transfer fluid can be completely removed from the heat transfer device before introducing a composition of the invention. Alternatively, an existing heat transfer fluid can be partially removed from a heat transfer device, followed by the introduction of a composition of the invention. The compositions of the invention can also be prepared simply by mixing R-1132a and CF3I (and optional components such as R-744, R-1123, hydrocarbons, a lubricant, and a stabilizer) in the desired proportions. The compositions can then be added to a heat transfer device (or used in any other manner as defined herein). In a further aspect of the invention, a method is provided for reducing the environmental impact arising from the operation of a product comprising an existing compound or composition, the method comprising at least partially replacing the existing compound or composition with a composition of the invention. Environmental impact includes the generation and emission of greenhouse gases through the operation of the product. As mentioned previously, this environmental impact can be considered to include not only emissions from compounds or compositions that have a significant environmental impact due to leaks or other losses, but also the carbon dioxide emissions resulting from the energy consumed by the device during its lifetime. This environmental impact can be calculated using the measure known as Total Equivalent Warming Impact (TEWI). This measure has been used in calculating the environmental impact of certain stationary refrigeration and air conditioning equipment, including, for example, supermarket refrigeration systems. It can also be considered that the environmental impact includes greenhouse gas emissions resulting from the synthesis and manufacturing of the compounds or compositions. In this case, manufacturing emissions are added to energy consumption and direct loss effects to produce the measure known as Life Cycle Carbon Production (LCCP). The use of LCCP is common in the environmental impact assessment of automotive air conditioning systems. In a preferred embodiment, the use of the composition of the invention results in the equipment having a lower Total Equivalent Warming Impact and / or lower Life Cycle Carbon Production than would be obtained by using the existing compound or composition. These methods can be applied to any suitable product, for example, in the fields of air conditioning, refrigeration (e.g., low and ultra-low temperature refrigeration), heat transfer, aerosols or spray propellants, gaseous dielectrics, flame suppression, solvents (e.g., flavor and fragrance carriers), cleaners, topical anesthetics, and expansion applications. The preferred field is refrigeration. Examples of suitable products include heat transfer devices, sprayable compositions, solvents, and mechanical power-generating devices. In a preferred embodiment, the product is a heat transfer device, such as a refrigeration device. The existing compound or composition has a higher environmental impact, as measured by GWP and / or TEWI and / or LCCP, than the composition of the invention that replaces it. The existing compound or composition may comprise a fluorocarbon compound, such as a perfluoro, hydrofluoro, chlorofluoro, or hydrochlorofluorocarbon compound, or may comprise a fluorinated form. n^Hcnn / i ζπζ / β / υιλι Preferably, the existing compound or composition is a heat transfer compound or composition, such as a refrigerant. Examples of refrigerants that can be replaced include R-410A, R-454B, R-452B, and R-32, preferably R-410A. Any amount of the existing compound or composition may be replaced to reduce environmental impact. This may depend on the environmental impact of the existing compound or composition being replaced and the environmental impact of the replacement composition of the invention. Preferably, the existing compound or composition in the product is completely replaced by the composition of the invention. The compositions of the present invention may find particular use in vapor compression heat transfer systems, such as refrigeration, air conditioning and heat pump systems. The refrigerant compositions of the invention will typically be combined with a lubricant when used in a vapor-compression heat transfer system. Suitable lubricants include polyol esters, such as neopentyl polyol esters and polyalkylene glycols, preferably capped at both ends with an alkyl group, for example, a C1-4 alkyl group. The invention is illustrated by the following non-exhaustive examples. Examples The invention is now illustrated by modeling theoretical cycles of the performance of selected compositions of the invention in a cooling cycle (Examples 1-10). R-410A was chosen as the reference refrigerant for all modeling experiments. The following conditions were assumed: ntzbcnn / i ζπζ / β / υιλι R410A Data Input Section Cooling Capacity kW 6 Average Condenser Temperature °C 54.44 Average Evaporator Temperature °C 7.22 Condenser Subcooling K 8.33 Evaporator Superheat K 5.56 Evaporator Pressure Drop bar 0 Suction Line Pressure Drop bar 0 Condenser Pressure Drop bar 0 Compressor Suction Superheat K 11.11 Isentropic Efficiency 70% ntzbcnn / i ζπζ / β / υιλι The modeling was performed in Microsoft Excel using NIST REFPROP10 as the thermodynamic data source. The phase equilibria of binary mixtures of R-1132a with R-134a, R-1234yf, R-125, R-152a, R-744, CF3I, and R-32, and of binary mixtures of CF3I with R-32 and R-152a, were first studied using a constant-volume apparatus to measure the vapor pressure of the mixtures over a temperature range from 70°C to +40°C. These data were then subjected to regression to produce interaction parameters for use in REFPROP that reproduced the experimental data. The modeled cycle was a standard air conditioning vapor compression cycle comprising evaporator, compressor, condenser, and expansion device. The mixtures of the invention can offer capacity and energy efficiency (COP) close to those obtainable with R-410A and are therefore suitable for use in air conditioning applications. Certain preferred mixtures of the invention offer capacity and COP within 5% of the values ​​obtainable with R-410A with temperature glides of less than 10 K in the evaporator and / or condenser. It is anticipated that such mixtures can be used with minor modifications to existing equipment designs (designed for R-410A). Other compositions offer higher capacity but with greater temperature glides; however, such mixtures may hold promise for new equipment designs. > & hchccc 4 C Example 1 (formulated compositions comprising ROa, CF3i and 26 wt% R*32) RTO2a 35 R32 20 35 23 25 25 29 25 15 28 15 29 5 25 Result R416A CF3I 45 55 65 69 65 75 75* CQP of er^jamiento 2.88 2.44 2.54 2.54 2.63 2.62 2.92 3.91 OOP of entemiento ot regarding.® fe 100.0% 847% 88.2% 882% 91.6¾ 98.1% 1914¾ 104.7% Capacity «tata te enfíiwjento k» Sffl 5840 5667 5687 JX<| ΊZTΤνΤ 4921 4602 4248 Cooling capacity ex» with respect to reference 1110¾ 1077% wm 103.7% 93.0% 87.5% 30.8¾ Discharge temperature of the confessor 'C w 113.8 1149 114.3 115.9 117.5 117.9 117.8 Offering of the discharge temperature of the hostages K as 10.8 119 119 12.9 14.5 149 14.8 tefe te fe sitete of the ev^xater bar 13.42 12.38 12.1 11.3? 938 8.41 745 tefe of fe condenser inlet ter 333 44.1 411 411 38.1 32..1 29.0 25.9 Slip te! evaporate? (sate enter) K GJ 121 13.2 132 14.1 15.0 149 14.2 DeteÑ^dd condenser ísdratesádíO K OJ 7.1 9.6 93 10.6 13.2 139 13.8 Example 2 (ternary compositions comprising R-1132a, CF3I and 25 wt% R-32) > & rc rccc 4 C R1132a R32 35 25 30 25 25 25 20 25 15 25 19 25 5 2:5 Results R418A CF3I 40 45 59 55 50 65 76 COP de sifwtóe COP de «^amiento con respecto a fe 2.88 2.43 252 2.61 2.70 279 2.3? 2.96 referera W.0% 34.5% 87.8% 90.9% 83.8% O% 99.8% 182.8% C^scidad ternera de atai^o Capacidad de entonto «n resped» 5260 6028 5B 5661 5422 5148 4840 4496 ala retas ®.0% 1146¾ 111.5% 107.8% 103.1% 97.9% 920% 35.5% ¡empetata de desea® dd compresor Oitaia de fe tesnperata de deseca τ BO 113.3 114.3 115.4 118.4 117.2 117.8 118.1 of the network» K 0.0 10.3 11.3 12:4 13.4 14.2 148 15.1 Presen de la eróa del evaporada bar woo 13.07 12.96 O W9? 0.1 0.9 10.8 11.8 12.1 124 12.3 118 salida) K 0.1 5.5 7.1 8.5 9.6 10.5 110 109 GO OR Example 3 ("pmm mixtures comprising R4132a, CF3I and 30 wt % of R¿2) > & rcrcc 4 C Results rw COPdeeÉiw® GOP <fe eMerto cob respecto a ia retada (Apandad «Mica toeftoanwto Capacidad (te etiimto con ?especio a la refere™ Temperatura de descarga del confesor Otada de ia temperatura de descaiga de ia referencia Puto de condensación del awsdcr Temperatura del gas de fe salida del «aperador Deslizamiento dd evaporad» tsalidaentíada) Deslizamiento del condensador (entradasáda) k> 3 'CK 'C τ KK 2.88 Í9Q.O% 52§0 W Bl) 0.0 73 12.0 01 0.1 R1132a 35 3« 23 28 15 18 5 R32 K 38 38 30 38 38 30 CF3Í 35 48 45 59 55 su 55 244 847% 3202 2.52 87.8 % 6048 2.61 007% 2« 93.5% 5625 277 90% 5362 2.05 99.9% 5064 2.93 1017% 4733 11?.9% 115.0% . 1113% 101.9% 96.3% 113.0 13.9 115.0 115.3 -ms 17.5 110.0 10.0 0.3 1.0 11.7 120 120 12.8 12.2 13.0 12.3 14.5 12.2 15.0 11.9 16.9 17.3 175 V.7 17.8 17.8 17.5 8.3 O 9.5 9.9 ID1 BAD 94 4.4 57 6.9 78 3.4 8.7 8.5 ΓΟ N > & hchccc 4 4 C Example 4 (ternary compositions comprising R-1132a, CFsI and 35 wt % of R42) Rm2a 35 30 25 20 15 10 5 R32 35 35 35 35 35 35 35 Results R410A CF3I 38 35 48 45 58 55 80 COP (te alfares 2.88 2 45 2.69 ώ 2.76 2.84 191 bur K Mi®® coi) respe&v 8IS (debela m % 83.1% 93.5% 96.13⁄4 98.73⁄4 1012% Gaseidad TOÍm^ca de eiiíaue rfe l« 5260 6350 S0211 2575 75!? 4952 vdpMwu 02 8h»MOT?' u§ á ¡3 ídermia 120.9% 118.1 % 114.6 % 1W.W 105.6% >2% 94.1 % Discharge temperature of! 113.9 114.8 115.6 116.5 117.2 1177 deMererá K 0.0 103 10.9 11.8 12.7 13.5 14.2 14.7 Evaporate condensation challenge :c 11.2 10.9 Thin temperature of the wrader outlet τ 12.8 16.3 16.5 167 16.8 15.8 16.7 16.4 Slide^ of the evaporated (sideMada) K 0.1 7.0 7.5 7.8 7.8 Mzarée del radeo» íerMas^da) K 0.1 3.7 <8 5.7 64 6J 7.8 6.7 > & rc rccc 4 C Example 5 (temeric compositions comprising R-1132a* CFSI and 40 wt % R-32) Rt132a 35 30 25 20 10 5 R32 40 40 40 1 40 4S R410A CF3I Results 25 3S 35 40 50 55 COPdeeÉiamtQ 2.§8 2.46 2.54 2.62 2.79 2.84 2.91 Treatment COR with respect to the reference w% 0.57% 8.15% 91.1% 9.37% 98.7% 1.911% Volumetric capacity of etímeate 5.260 6.44 6.352 6.176 5.967 5.454 5.149 to the reference im 1.235% 7.08% 1.174% 1.135% 1.037% 9.77% Desired temperature of the ra^esoí X ti 3.3 4.141 1.149 1.157 117.8 1175 UraOTa Se » opcitWá δε ΟώΙϊ§η of the ideará K 9.0 10.3 111 119 127 14.0 14.5 ΡιΛ of o»M dd evaporated «fl k? 7.3 10.3 105 10.0 10:6 10.4 W Evaporate outlet gas storm? Yes L· 12.8 15.9 16.1 16.2 112 159 156 Lack of care <te evaporada (sateenrt) K 91 6.2 66 6.B 6.8 6.3 5.8 DesÍEanoto del condensador (er&adasabda) K 0.1 3.3 4.2 4.9 5.4 57 52 Example 6 (quaternary compositions comprising R-1132a, CF^ 10 wt% of R-125 and 10 wt% of R-32) > & rc rccc 4 C í?1»2a 35 38 25 29 15 19 5 R32 10 W 18 10 19 10 19 R125 10 18 18 10 19 10 W Resultadas R4WA CF3I 45 5S 55 6« 65 79 75' KFdeeiWWeRto 24 2.37 249 2.84 2.71 2.83 2.9¿ 315 OOP de etMsto «n remedo as nMs 10G.C% 62.3% 864% 91.8% 94.4% 913% 182.2% 196.2 % Capteteí wh ¡reirá de eíiféréfo Capacidad de aMnb an resperfo a fe tetó 5268 5469 5316 5'284 4871 4589 4268 3907 ¡efcrá » W.8% wn % sm 92.8% 87.3% 812% 743¾ Wdecafefaccén 3.88 3.3? 349 184 371 3.83 354 405 test Λ S,1' v 7L3 59.5 63.4 67J 72.3 77.3 82.8 88.9 Critical reading 46.7 48.9 43.0 411 418 48.7 48.3 Electo de reiri^ 153 95 97 96 98 98 9? 96 ttesirápres® 139 131 3.34 3.32 3.41 3.44 3.4? 3.50 will be paid by the courteous Ofaexs by the b ráperfoi a de download of the 'C 1G3.D 1812 110.0 1102 111.8 1112 110.9 118.1 rsráo K 8.0 62 7.0 7.2 6.6 8.2 7.9 7.1 Rasan efe la echada del es apaw te 18.09 1184 H35 lí.ffi 1184 8.82 762 6.84 Piral efe la eat'rá del «ndensada te 319 43.2 400 36.8 33.5 33.4 27.2 23.9 will test & la sráda dsí eva^rafe 'C 7.2 3.7 0.0 -1.1 1.6 -12 -1.2 48 Condenser duck of the ve^orador :C 73 13.8 U.4 15.5 154 15.6 15.6 15.2 Empetato of the gas of fe saSda dd experator » 120 120 120 τ. 21.0 21.2 21.2 28.9 slide dd «aperará iáida-erate K 9.1 111 U.4 15.8 114 18.9 16.8 18.0 Pimío de cráste® dsl raránsrár 5C 54.5 54.5 58.1 53.63 S. 625 62.6 Pimío de tartaja del «masará Έ 54.4 5M 49« 48.6 47.5 O 464 46.3 Taswta de fe se^ds del «mdensadcí τ rat 42.5 413 «.2 39.3 38.5 36.368 Mdcte dd balizar. ice··®^ K Oí 7.3 9J 11.8 13.7 152 10.1 163. Example 7 (quaternary compositions comprising R-1132a, CFJ, 13 wt % of R-125 and 26 wt % of R-32) > & ncnccc 4 C RI1.& 35 i 25 20 15· 16 5 R32 20 2» 20 29 29 26 26 8125 10 10 10 10 10 18 16 Resillados RUSA €Πί 35 fe 45 58 68 COPfíse 65 2.88 234 245 2.54 2.94 2.73 2.82 2.91 COR fe efeíaffiieeto coa ¡especia ah retenía 813% 85.1% 815% S1.?% 54.8% an 1513% Capaidad papatriidad fe totora 8585583 5733 5552 5338 58 í5 4773 4442 Fetoatofe cm capacity with respect to the nu% ®0% 16563⁄4 1813% 964% 90.8% M.5% COPvfeüWsÍfe 3.82 391 Tempesto crlica T 71.3 58.8 &1 53.8 67.0 71.3 75.7 864 RetosKÍa bar 49.9 Ú2 48.4 49.4 49.4 484 49.2 48.8 Essays 153 153 Affi too 166 156 157 106 105 fMtotopeto 3.33 3.24 327 339 3.34 3.38 342 345 Storm fe la discharge fes apar Diwda fe ia tarate fe discharge fe ¡a X 153.6 110.3 110.8. 1114 III? 1117 rfeM K 0.0 5.8 5.3 7.1 7.8 8.4 8.7 §.? H faith would enter the separate bar 10.08' 14.31 1327 1223 11.28 10'8 9.18 8.19 Pr«& faith faith would settle faith! condensed^ bar 338 484 434 434 37.4 344 314 28.2 Tempeo&ra fe h etob fei «expected X n 2.9 2.5 2.1 1.7 15 15 16 Punta» fe twfefisacife fe! svspsradar 'C 7.3 115 125 12.4 12.7 29 ao 128 Storm fe gas fe ia toa fe! evaporative? !C 12.8 1M 17.5 17.9 18.3 8.5 165 164 teiízaffiíeEte fe aswfef (feife-atóa j K 0.! 8.6 95 10.3 11.0 11.4 fli 11.2 Rife fe contatocn de! contatos T 545 56.4 57.2 56.8 as 59.1 58.4 &5 Pito fe tosía fe! 411 411 Dejamiento de! ccndessador (etadato^ 5.1 3.8 5.6 7.1 83 8.3 9.9 ISO. Example S (quaternary compositions comprising R-IWa, CFJ. 1δ % by weight of R-125 and 25 % by weight of R-32) R1132a 35 39 25 2$ 15 10 5 »32 25 25 25 25 25 25 25 RÍ25 18 18 1® 18 18 18 18 RestiWos R4WA CF31 38 35 46 45 56 55 08 OTdeefiífia«tc 2.63 2.35 2.45 2.54 2.53 2.72 2.88 2.88 COP de enlriBmientB a» respecte ab 100.3 refera 817% 353% 88.5% 91.5% 94.5% 97.4% % Capssfe vcMtica de «afeitó 5280 0033 5922 5751 5548 5,290 5884 4003 Capacity decor respeda ab 89.0 WM 1148% 112..6¾ wan 105.3% «6% 95 . i % % CQPdfetódái 3.88 3.35 3.45 3.54 3.53 372 3.83 3.88 Temperatura critico C 71.3 56.3 59.3 62.5 86.0 S9.6 735 77.8 Presiófelh bar 45.8 497 49.3 49.8 49.8 497 49.4 491 Efecto de reSgsfatfe 1¾ 153 197 ® W 111 112 112 111 feferfedepres&s 3.33 322 324 327 3.31 3.34 3.38 3.42 Tendea tora de b descarga dd compres®· JC to M5 109.2 im lias 111.1 111.6 1117 Bifefea da fe descaer temperature de la afeó? K 8.0 5.5 5.2 5.9 7.0 8.2 8.6 y Presión de «teda del «separador bar 18.00 1473 13.73 1273 n.?3 1073 574 876 Presión de b estada del corfeaife te 319 47.4 44.5 417 38.8 35.5 33.0 29.9 Exact temperature of the evaporator (°C) 12 3.7 3.3 3.9 2.8 2.7 2.1 2.9 Condensation temperature of the evaporator 11 10.8 11.1 11.7 11.6 Temperature of the gas from the evaporator (°C) 128 18.3 167 7.0 17.2 7.3 17.3 17.1 Temperature of the evaporator (°C) 8.1 7.1 7.3 8.4 8.8 9.1 9.7 Condensation temperature of the condenser (°C) 4.5 55.9 56.7 56.3 57.8 58.3 58.3 condense τ £4.4 53.0 52.2 51.6 51.1 502 58.6 58.8 Temperature of b outlet of! contatsata C 461 44.5 43.9 43.3 42.8 42.4 42.2 423 Qtaraitata ta cortead® ¡feda-safe) K S.1 39 4.5 5? 5.6 73 7.7 1.1. > & hc hccc 4 C Example 9 (external compositions comprising R4 132a, CF$ 14% by weight of R-125 and 25% by weight of R-32) ROTa 35 3« 25 28 15 W 5 R32 25 25 25 25 25 25 25 Rt¡5 14 14 14 '14 14 14 14 ResuWes RMM CF3 36 31 38 41 «i 51 56 CGPtotertto» 2.88 2.31 2« 3.52 281 2.68 278 2.8S CCP of eá Mente with respect to te retesa 1910% 83.4% 84.3% 38.7% 33.7% 98.6% 95.4% Capacity toifebtade ítorrssito Capacity of «¡fasta*» with respect to le Litó O 5331 5775 5576 5338 5'362 4749 rataenua 100.8% m« 112.8% 109.8% 181.5% 96.2% 58.3% CCPderaleftójn 3.88 3.31 343 352 361 3.65 3.78 3.86 Temperature cite C·,»·' 713 188 105 US 118 119 1W 3.39 3.22 323 3.26 329 3.33 336 3.40 Temperate de te fecaWsl ion^resor Stecia de la teera de discharge de te:0 183.3 107.1 to KB5 «.5 189.3 100.3 189.4 rataencte K 00 41 44 S.8 5.5 82) 6.3 «4 Remain of entry of the tenant bar 14.87 1333 13.00 12.31 11.01 1832 9.93 Remain of the stay of the canter bar 319 48.2 45.2 424 39.5 368 33.7 30.7 Temperature quoted dd evaporator C,L· 7.2 4.1 18 3.8 14 3.3 3.3 3.5 Routes <fe ccadersaciérs del «repasta 'V 7.3 18.3 18.5 10.3 11.1 111 11.1 10.9 Températe dei gas de te rafa ti evapsador :c 12.8 15.9 152 184 15.6 16? 16.7 16.5 Destaiento del eespossetor isate-grato) K 8.1 6.2 08 7.3 71 74 7.8 7.5 Pata de antasKta dei ctotate 5)\ 545 554 56.3 538 57.3 57.6 57.8 57.7 Panto de ίχιώφ ti condensad» 1 / 54.4 53.5 526 52.0 515 513 51.1 51.2 lempEtasa de te tafa dei cantasnta 45.1 45.1 44.3 417 43.3 438 42.8 42.9 Oee&amtab del esn toada jetea-sífis) K 0.1 2.8 37 4.8 57 6.3 6.6 6.5. > & hc hccc 4 C Example W (quaternary compositions comprising R-1132a. CF¿ 19 wt % of R-125 and 39 wt % of R-32) Result® R41M CO? desalteré® 2.88 OOP -de enfewts wb respecte a la tereré βϊ Capacitó vokitótó de enfriaré® >te3 528S Capaddsd se enfriaré® m especio a la reteTM >3% COP decantó® 3.S8 Tanpefea efe L> 71. 3 Eit 49. refrigeration 153 Pressure reaction 3.39 TwnpwBtora dedeson» of the compressa 'CO Stecs of the ®!iipe»s of discharge of ia tereré K 8.3 Plague of enfrtó of the eratóof te 1300 Pressure of the eróte of the contestó bar 33.9 Tsepeiate of the eva de porada 27. meet the evapsré C 7.3 Evepocré balance gas tank 5C 12.8 Descaré!® te hood? ¡salida-erôte) K 8.1 Punte de «assate del condensad® τ 54.5 Punte de Muja te réensa&r !C 54.4 Terrerés de & sida dd srésadar 'C 46.1 Qréatetó dei condenaré feróte-saré 0.1 Riia R32 35 38 30 38 25 36 28 38 15 » 18 38 5 38 R125 18 1(¡ 13 18 18 10 19 (Ώ1 25 30 35 48 45 5S 55 2.37 247 235 2.64 2.72 2.60 2.87 623% 85.7% 83.8¾ 91.7% 94.5% 97.2% 999% 6283 M 5927 5726 5488 5215 4996 i 17.9% 1158% 1137% 168.9% 1943% sm 933% 337 34? 3.55 3.64 3.72 3.86 3.67 583 5K 61.9 65.1 68.5 721 75.9 50.3 583 50.3 50.1 49.3 49.4 114 118 117 11? ns 117 11? 321 323 3.26 328 3.32 3.35 3.38 183.9 189.4 1® 110.5 111.1 1115 111.7 59 6.4 7.8 7.6 61 8.5 8.7 1101 14.06 13.11 1215 1118 1022 926 482 46.4 42.5 35.9 37.1 343 31.3 4.2 3.9 3.8 3.6 3.6 37 3.9 W.3 105 187 10.8 O 197 105 ty 16.1 16.2 16.4 16.4 153 16.1 61 6.6 03 7.2 12 79 6.6 55.7 55.3 56.8 57.2 57.4 £75 57.4 532. 52.6 521 517 51.5 51.4 51.5 445 44.2 43.6 43.4 Ü1 411 43.2 2.5 3.3 4.7 5.4 59 6.1 5.9 Examples 11 to 15 demonstrate the modeling of the theoretical cycle performance of selected compositions of the present invention in a heat pump cycle. R-1234yf was chosen as the reference refrigerant for the heat pump cycle. The modeling was performed in Microsoft Excel using NIST REFPROP10 as the thermodynamic data source. The phase equilibrium of R-1132a with R-32 and R-1234yf mixtures was first studied using a constant-volume apparatus to measure the vapor pressure of binary R-1132a / R-32 or R-1132a / R-1234yf mixtures over a temperature range of -70°C to +40°C. These data were then subjected to regression to produce binary interaction parameters for use in REFPROP that reproduced the experimental data. The modeled cycle included the injection of refrigerant vapor at intermediate pressure to improve cycle performance. For each composition, the optimum injection pressure was determined to maximize the Coefficient of Performance (COP) for heating. The following conditions were assumed for the heat pump cycle: ntzbcnn / i ζπζ / β / υιλι R-1234yf Data Input Section Compressor displacement m3 / h 16.5 Average condenser temperature °C 45.0 Average evaporator temperature °C -25.0 Condenser subcooling K 3.0 Evaporator superheat K 1.0 Evaporator pressure drop Suction line pressure drop bar 0.20 bar 0.10 Condenser pressure drop Compressor suction superheat bar 0.20 K 10.0 Isentropic efficiency 65.0 % & hchccc 4 C Example 11 (binary compositions comprising R-1132a and CFJ) R1132s 4% 6% 8% 10% 12% 14% CBI 96% 9« §2% 90% 88% 88% R1234yf Results W / 96% 6% / 94% 8% / 92% !» / « 12% / 88% 14% / 86% Coffee Plantation COP Heating Capacity (vdsjmetrics b / m3) 239 1108 2.60 1189 2.58 1310 2.56 1431 2.54 1553 L53 1675 2.52 1795 IspCíM Gé L&cíaUKM M [?M 8 the referred Reiadonde pressure Compressor Discharge Temperature 'C 100.0% 939 716 1073% 10.25 123.2 1183% 1035 1262 129.2% 10.31 128.2 140.2% 10.20 129.6 151.2% 10.05 130.5 162.1% 9.88 131.1 uiiciYesiUí! uc ma»npe>au»a Uc drop from the reference K 0.0 51.6 54.5 56.5 57.9 58.9 59.5 Evaporate inlet pressure? bar 1.23 110 1.22 134 1.4? 1.61 1.75 Condenser inlet pressure (bar) 11.54 11.27 12.59 13.83 15.02 16.17 17.28 Condenser inlet pressure (inlet) K 0.0 4.6 6.3 9.0 10.9 12.7 14.3 Condenser cooling (inlet-outlet) K 0.0 15.2 19.6 22.7 24.3 26.4 27.3 Example 12 (thematic compositions comprising 4% by weight of R-1132a, R-1234yf and CF3I) > & rcrccc 4 C R1132a O 4% 4% 4% 4% 4% 4% RW 10% 20% 30% 40% 50% 00% 70% was 86% 76% 66% 56% 46% 36% 26% RW4yf COP Results <fe calefacción kJ / m 2,39 Capacidad de calefacción volumétrica Capacidad de calefacción con relación a Ib referencia Relación de presión 3 1108 100,0% o 1 £wprsclU!s ucuc&digs üv: compre» Ϊ 71.8 ubcrfeBltó üt· ^hlpoiQ^ís üg UooUwyd de la retada K ο.δ Ptesión de la entrada del evaporad^ Presión de la entrada del condensador Deslizamiento del evaporado? (salida- te i,¿5 11.54 ertodaj K 0,0^ LcaHíamlcmO <3ct tOMM (entrada-salida) 1 0,0 2.57 2.54 2.51 2.48 2.45 2.43 2.41 1248 1288 1312 1322 1320 1308 1290 112.7 1163 118.4 119.4 119.2 118.1 115.5 % % % % % % % 9.88 9.63 9.4? 9.38 9.36 9.39 9.46 1110 102.0 95.2 89.9 86.0 83.0 80.5 39.4 30.4 215 18.3 14.4 113 9.0 1.20 1.28 115 139 141 1.41 140 11.88 1237 1275 13.02 1119 13.27 13.28 4.5 3.9 3.1 2.4 19 16 1.5 12.7 10.5 8.6 7.1 6.1 53 5.1 Example 13 (ternary compositions comprising if 8 wt% of R-1132¾ R-1234yf and CF?J) > & rcrccc 4 C RllSa O 8% 8% 8% 8% 8% R1234yf 20¾ 30¾ ®% 50% 60% G3I 82% 72% 62% 52% 42% 32% Results R1234yf COP teleta® 239 Volumetric heating capacity Heating capacity with kJ / m3 ratio 1108 to reference 1» Depression ratio Compressor discharge temperature 939 'C 716 Title dg ia reference discharge temperature K ao Evaporator inlet pressure? bar 123 Condenser inlet pressure bar 1154 Evaporator slip (outlet* inlet; K 0.Ü Condenser slip (inlet* outletj K 0.0 2.53 1467 2.50 1488 2.48 1496 2.45 1491 2.43 1476 2.41 1452 132.5% 1343% 135.0% 1343% 133.2% 1311% 9.95 972 9.58 9.51 9.51 9.56 115.6 1063 993 93.9 89.8 86.7 44.0 1.43 14.24 7 Ω 34.7 1.50 14.57 27.6 155 14.82 ζ ·) 22.3 157 1437 •9 1 18.2 1.58 15.03 15.1 157 15.02 2 1 / .3 18.7 δ.) 155 J<4 13.1 113 101 93 Example 14 (ternary compasses comprising 16 wt% of R-1132a, R-1234yf and CF$I) chccc 4 c 111132a 10% 10% 10% 10% 10% 10% R1234y! 10% 20% 30% 40% 50% 60% CF3I 80% 70% 60% 50% 40% 30% R1234yf Highlights COP of coffee plantation Heating capacity - volumetric 239 1108 2.52 1577 2.49 1588 246 1587 2.44 1576 2.41 1554 240 1524 Cooling capacity with respect to reference 1M 142.4 143.4% 1433% 1412% 1403% 137.6% Depression ratio Compressor discharge temperature X 939 716 9.89 117.2 9.69 107.3 9.57 100.9 9.52 95.5 9.53 914 9.60 883 Lweier tia 3618 íeRipsiaMa 08 Ge&usrga de la releída Presión de b entrada del evaporado? Condenser inlet pressure K bar bar 0.0 123 1154 45.5 155 15.36 36.3 161 1533 29.2 1.65 15.82 23.3 10 / 15.92 19.8 167 15.93 16.7 1.65 15.87 υ&5Π£βΠ3ί6ΠΧν Oía TOpOís™ ¡Mr K 0.0 93 7.7 6.2 5.0 43 3.9 uesiKMe'KO aeí concensMor (ertuaos' exit) K 0.0 203 17.2 14.6 12.8 11.5 10.8 > & hc hccc 4 C Example 15 (quaternary compositions comprising 4 wt% R-1132a, 8 wt% R42, R-12Myf and CF31) RU32a R32 RW CF3I 4¾ 8¾ 10% 78% 4% 8% 20% 68% 4% 4% 8% 8% 30% 40% 50 48% 4% 8% 50% 3855 Recito R1234yf OOP (fe chacra 239 2.55 2.52 2.49 2.47 2.45 Volumetric heating capacity kl / m3 1108 1747 1740 1724 1700 1667 Heating capacity relative to reference fe Pressure ratio 100.0% 939 157.7% 9.35 157.1% 9.28 .1557% 9.24 153.5 % 9.24 150.5% 9.29 Compressor discharge temperature Temperature difference (reference temperature) XK 71.6 0.0 122.5 50.9 113.0 414 105.6 34.0 100.0 28.4 957 24.1 Evaporator inlet pressure (bar) 123 173 1.77 179 179 178 Condenser inlet pressure (bar) 1154 15.19 16.41 16.55 16.58 16.53 Evaporator slip (outlet-inlet) K 0.0 10.5 8.4 6.6 5.4 4.7 Condenser slip (inlet-inlet) K 0.0 17.5 14.6 12.4 10.9 9.9

Claims

1. A composition comprising trifluoroiodomethane (CF3I) and 1,1 difluoroethylene (R-1132a), preferably a binary composition of CF3I and R1132a.

2. The composition of claim 1 comprising from 1 to 95 wt% CF3I and from 99 to 5 wt% R-1132a, preferably from 1 to 50 wt% CF3I and from 99 to 50 wt% R-1132a, based on the total weight of the composition.

3. The composition of claim 2 comprising from 1 to 40% by weight of CF3I and from 99 to 60% by weight of R-1132a, preferably from 1 to 30% by weight of CF3I and from 99 to 70% by weight of R-1132a and particularly from 1 to 20% by weight of CF3I and from 99 to 80% by weight of R-1132a, based on the total weight of the composition.

4. The composition of claim 1 or 2 comprising 99 to 70 wt% CF3I and 1 to 30 wt% R-1132a, preferably 99 to 80 wt% CF3I and 1 to 20 wt% R-1132a, for example 97 to 85 wt% CF3I and 3 to 15 wt% R-1132a, based on the total weight of the composition.

5. The composition of any of claims 1 to 4 that is non-flammable or only weakly flammable as determined by the test method of ASHRAE Standard 34:2016.

6. A ternary or higher composition comprising trifluoroiodomethane (CF3I), 1,1-difluoroethylene (R-1132a), and at least one additional compound selected from the group consisting of carbon dioxide (CO2; R-744), tetrafluoromethane (R-14), trifluoromethane (R-23), and perfluoroethane (R-116).

7. The composition of claim 6 comprising from 1 to 95 wt% (preferably from 1 to 50 wt%) of CF3I and from 99 to 5 wt% (from 99 to 50 wt%) of R-1132a and at least one additional compound selected from the group consisting of CO2, R-14, R-23 and R-116 based on the total weight of the composition.

8. The composition of claim 7 comprising from 1 to 40 wt% CF3I and from 99 to 60 wt% R-1132a and at least one additional compound selected from the group consisting of CO2, R-14, R-23 and R-116, preferably from 1 to 30 wt% CF3I and from 99 to 70 wt% R-1132a and at least one additional compound and particularly from 1 to 20 wt% CF3I and from 99 to 80 wt% R-1132a and at least one additional compound based on the total weight of the composition.

9. The composition of claim 6, comprising from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of CO2 based on the total weight of the composition, optionally wherein the CO2 is present in an amount of approximately 1 to approximately 30% by weight, preferably from approximately 1 to approximately 20% by weight, such as from approximately 1 to approximately 10% by weight.

10. The composition of any of claims 6 to 9, wherein the amount of at least one additional compound selected from the group consisting of CO2, R-14, R-23 and R-116 in the composition is selected such that (i) the composition is only weakly flammable and preferably nonflammable as determined by the test method of ASHRAE Standard 34:2016 or (ii) the overall composition is maintained in two-phase equilibrium; the vapor-phase composition will still be nonflammable as determined by the test method of ASHRAE Standard 34:2016.

11. A ternary or higher composition comprising trifluoroiodomethane (CF3I), 1,1-difluoroethylene (R-1132a), and at least one additional compound of lower volatility than 1,1-difluoroethylene selected from the group consisting of 1,1,2-trifluoroethylene (R-1123), difluoromethane (R-32), propane (R-290), propylene (R-1270), fluoroethane (R-161), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 2,3,3,3-tetrafluoropropene (R-1234yf), isobutane (R-600a), n-butane (R-600), trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), and 3,3,3-trifluoropropene. (R-1243zf) 1-chloro-3,3,3-trifluoropropene (R-1233zd(E / Z)) and 1,1,1,4,4,4-hexafluoro-2-butene (R-1336mzz(E / Z)).

12. The composition of claim 11 comprising from 1 to 95 wt% (preferably from 1 to 50 wt%) of CF3I and from 99 to 5 wt% (preferably from 99 to 50 wt%) of R-1132a and at least one additional compound of lower volatility than R-1132a.

13. The composition of claim 11 comprising from 1 to 40 wt% CF3I and from 99 to 60 wt% R-1132a and at least one additional compound of lower volatility than R-1132a, preferably from 1 to 30 wt% CF3I and from 99 to 70 wt% R-1132a and at least one additional compound of lower volatility than R-1132a and particularly from 1 to 20 wt% CF3I and from 99 to 80 wt% R-1132a and at least one additional compound of lower volatility than R-1132a, based on the total weight of the composition.

14. The composition of claim 11, wherein R-1132a is present in an amount of approximately 1 to approximately 40% by weight, preferably approximately 1 to approximately 30% by weight, such as approximately 1 to approximately 20% by weight, for example approximately 1 to approximately 10% by weight, based on the total weight of the composition.

15. The composition of claim 11 or 14, wherein CF3I is present in an amount of approximately 1 to approximately 70% by weight, preferably approximately 1 to approximately 60% by weight, such as approximately 1 to approximately 50% or 40% by weight, for example, approximately 1 to approximately 30% by weight, based on the total weight of the composition.

16. The composition of claim 11, 14, or 15, wherein the composition comprises: approximately 1 to approximately 40% by weight of R-1132a, approximately 1 to approximately 50% by weight of CF3I, and approximately 1 to approximately 30% by weight of R-1123; approximately 1 to approximately 40% by weight of R-1132a, approximately 1 to approximately 70% by weight of CF3I, and approximately 1 to approximately 50% by weight of R-32;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 20% by weight of R-125; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-1270;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-134a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-1234ze(E); from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 20% by weight of R-227ea or from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of R-152a.; 17. The composition of any of claims 11 to 16, wherein the composition further comprises carbon dioxide (CO2; R-744), optionally wherein the CO2 is present in an amount of approximately 1 to approximately 40% by weight, preferably approximately 1 to approximately 30% by weight, such as approximately 1 to approximately 20% by weight, for example, approximately 1 to approximately 10% by weight, based on the total weight of the composition.

18. The composition of claim 17, wherein the composition comprises: from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 70% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of CO2;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 40% by weight of CO2;of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 40% by weight of CO2; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 40% by weight of R-134a and of approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-1234yf and from approximately 1 to approximately 40% by weight of CO2;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-227ea and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-152a and from approximately 1 to approximately 40% by weight of CO2; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 40% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-32 and from approximately 1 to approximately 20% by weight of CO2 and from approximately 1 to approximately 40% by weight of R-1234yf;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 40% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-32 and from approximately 1 to approximately 20% by weight of CO2 and from approximately 1 to approximately 40% by weight of R-1234ze(E); or from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 40% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-32 and from approximately 1 to approximately 20% by weight of CO2 and from approximately 1 to approximately 40% by weight of R-152a.

19. The composition of claim 11, 14 or 15, wherein the composition comprises: from approximately 1 to approximately 40 wt% of R-1132a, from approximately 1 to approximately 70 wt% of CF3I, from approximately 1 to approximately 30 wt% of R-1123 and from approximately 1 to approximately 60 wt% of R-32; from approximately 1 to approximately 40 wt% of R-1132a, from approximately 1 to approximately 50 wt% of CF3I, from approximately 1 to approximately 30 wt% of R-1123 and from approximately 1 to approximately 20 wt%, preferably from approximately 1 to approximately 10 wt%, such as from approximately 1 to approximately 5 wt% of R-290; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 20% by weight of R-125;of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 30% by weight of R-1123 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-1270; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 40% by weight of R-1123 and of approximately 1 to approximately 40% by weight of R-134a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 50% by weight of R-1234yf;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-1123 and from approximately 1 to approximately 40% by weight of R-152a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 70% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 20% by weight of R-125; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-1270; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of R-134a;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-32 and from approximately 1 to approximately 40% by weight of R-152a;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 20% by weight of R-125; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-290 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 40% by weight of R-134a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 50% by weight of R-1234yf;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 20% by weight of R-227ea; nbfccnn / i ζπζ / β / υιλι from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-290 and from approximately 1 to approximately 50% by weight of R-152a;of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight of R-125 and of approximately 1 to approximately 20% by weight, preferably of approximately 1 to approximately 10% by weight, such as of approximately 1 to approximately 5% by weight of R-1270; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight of R-125 and of approximately 1 to approximately 40% by weight of R-134a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 40% by weight of R-1234yf;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-125 and from approximately 1 to approximately 50% by weight of R-152a; of approximately 1 to approximately 40% by weight of R-1132a, of approximately 1 to approximately 50% by weight of CF3I, of approximately 1 to approximately 20% by weight, preferably of ntzbcnn / i ζπζ / β / υιλι approximately 1 to approximately 10% by weight, such as approximately 1 to approximately 5% by weight of R-1270 and of approximately 1 to approximately 40% by weight of R-134a;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-1270 and from approximately 1 to approximately 50% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-1270 and from approximately 1 to approximately 50% by weight of R-227ea;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight, preferably from approximately 1 to approximately 10% by weight, such as from approximately 1 to approximately 5% by weight of R-1270 and from approximately 1 to approximately 50% by weight of R-152a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-134a and from approximately 1 to approximately 40% by weight of R-1234yf; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-134a and from approximately 1 to approximately 20% by weight of R-227ea;from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 40% by weight of R-134a and from approximately 1 to approximately 50% by weight of R-152a; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-1234yf and from approximately 1 to approximately 20% by weight of R-227ea; from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 50% by weight of R-1234yf and from approximately 1 to approximately 50% by weight of R-152a;or from approximately 1 to approximately 40% by weight of R-1132a, from approximately 1 to approximately 50% by weight of CF3I, from approximately 1 to approximately 20% by weight of R-227ea and from approximately 1 to approximately 40% by weight of R-152a; 20. The composition according to claim 11 or 14, wherein the composition comprises CF3I, R-1132a and R-1234yf, preferably from 15 to 98 wt% of CF3I, from 1 to 15 wt% of R-1132a and from 1 to 80 wt% of R-1234yf, such as from 25 to 87 wt% of CF3I, from 3 to 11 wt% of R-1132a and from 5 to 75 wt% of R-1234yf based on the total weight of the composition.

21. The composition according to claim 11 or 14 comprising CF3I, R-1132a, R-32 and R-1234yf, preferably from 15 to 97 wt% of CF3I, from 1 to 15 wt% of R-1132a, from 1 to 20 wt% of R-32 and from 1 to 70 wt% of R-1234yf, such as from 28 to 82 wt% of CF3I, from 3 to 10 wt% of R-1132a, from 5 to 12 wt% of R-32 and from 5 to 60 wt% of R-1234yf based on the total weight of the composition.

22. The composition of any of the preceding claims further comprising a stabilizer, preferably wherein the stabilizer is selected from the group consisting of diene-based compounds, phosphates, phenolic compounds and epoxides and mixtures thereof.

23. A composition of any of the preceding claims consisting essentially of the indicated components.

24. A composition of any of claims 4 to 23, wherein the refrigerant composition is less flammable than R-1132a alone, preferably wherein the refrigerant composition has: a. an upper flammability limit; b. a higher ignition energy and / or c. a lower flame velocity compared to R-1132a alone.

25. A composition of any of claims 4 to 23 wherein the composition is not flammable, preferably wherein the refrigerant composition is not flammable at ambient temperature or wherein the composition is not flammable at 60 °C.

26. The composition of any of the above claims having a Global Warming Potential (GWP) of less than 150.

27. The composition of any of the preceding claims wherein the refrigeration composition has a temperature glide in an evaporator or condenser of less than approximately 10 K, preferably less than approximately 5 K.

28. The use of a composition as claimed in any of the preceding claims as a refrigerant in a vapor-compression heat transfer system. ntzbcnn / i ζπζ / β / υιλι 29. A vapor compression heat transfer system comprising a composition as claimed in any of claims 1 to 24.

30. The vapor compression heat transfer system of claim 29, further comprising a lubricant, preferably a polyolester (POE) or polyalkylene glycol (PAG) lubricant.

31. A method for producing cooling comprising evaporating a composition as claimed in any of claims 1 to 27 in the vicinity of a body to be cooled.

32. A method for producing heating comprising condensing a refrigerant composition as claimed in any of claims 1 to 27 in the vicinity of a body to be heated.

33. A sprayable composition comprising the material to be sprayed and a propellant comprising a composition as defined in any of claims 1 to 27.

34. A method for extracting a substance from biomass comprising contacting the biomass with a solvent comprising a composition as defined in any of claims 1 to 27 and separating the substance from the solvent.

35. A method for cleaning an article comprising contacting the article with a solvent comprising a composition as defined in any of claims 1 to 27. ntzbcnn / i ζπζ / β / υιλι 36. A method for extracting a material from an aqueous solution or a particulate solid matrix comprising contacting the aqueous solution or the particulate solid matrix with a solvent comprising a composition as defined in any of claims 1 to 27 and separating the material from the solvent.

37. A mechanical power generating device containing a composition as defined in any of claims 1 to 27.

38. A mechanical power generating device according to claim 37 that is adapted to use a Rankine Cycle or a modification thereof to generate work from heat.

39. A method for retrofitting a heat transfer device comprising the step of removing an existing heat transfer composition and introducing a composition as defined in any of claims 1 to 27.

40. A method of claim 39 wherein the heat transfer device is a commercial or industrial refrigeration device, a heat pump, or a residential or commercial air conditioning system.

41. A method for reducing the environmental impact arising from the operation of a product comprising an existing compound or composition, the method comprising at least partially replacing the existing compound or composition with a composition as defined in any of claims 1 to 27.

42. A method of claim 41 wherein the use of the composition of the invention results in a lower Total Equivalent Warming Impact and / or a lower Life Cycle Carbon Production than that obtained by using the existing compound or composition 43. A method of claim 41 or 42 employed in a product of the air conditioning, refrigeration, heat transfer, aerosols or sprayable propellants, gaseous dielectrics, flame suppression, solvents, cleaners, topical anesthetics and expansion applications sectors.

44. A method according to claim 41 or 42, wherein the product is selected from a heat transfer device, a sprayable composition, a solvent, or a mechanical power generating device, preferably a heat transfer device.

45. A method according to claim 44 wherein the product is a heat transfer device, preferably a residential or commercial air conditioning system, a heat pump, or a commercial or industrial refrigeration system.

46. ​​A method according to any of claims 39 to 45, wherein the compound or existing composition is a heat transfer composition, preferably wherein the heat transfer composition is a refrigerant selected from R-410A, R-454B, R-452B and R-32.