Abstract: Disclosed herein is a heat transfer composition containing 1,1,2-trifluoroethylene and carbon dioxide, and possibly additional compounds, as well as heat transfer compositions containing the heat transfer fluid and methods of using the heat transfer fluid to reduce environmental impacts of heat transfer apparatuses. Heat apparatus configured to contain the heat transfer fluid are also disclosed.

Abstract: The joint use of a C3 to C6 alkene compound comprising a sole double bond and of at least one molecular sieve for limiting or preventing the isomerization of trans-1-chloro-3,3,3-trifluoropropene to cis-1-chloro-3,3,3-trifluoropropene, and/or for limiting or preventing the degradation of trans-1-chloro-3,3,3-trifluoropropene. Also, a method for heating or cooling a fluid or a body, to a method for producing electricity and to a heat transfer installation.

Abstract: The invention relates to a container housing a composition comprising tetrafluoropropene. The container is made from metal and includes an inner surface, said inner surface being in contact with the composition and being at least partially covered with a coating containing zinc. Advantageously, the aforementioned composition comprises at least 15 wt.-% tetrafluoropropene relative to the total weight of the composition.

Abstract: Methods for improving a refrigeration systems comprising modifying the system and replacing existing refrigerant with a replacement refrigerant comprising: (1) at least about 50% by weight of R1234ze(E); (2) greater than 0% to about 11% of HFC-134a, HFC-134, HFC-227ea, HFC-125, and combinations of two or more of these; and (3) from about 4% to about 20% by weight of HFO-1336mzz(E), HFO-1224yd(Z), and combinations of these, wherein said second refrigerant: (i) has an Occupational Exposure Limit (OEL) greater than 400; (ii) is classified as class A1 by ASHRAE Standard 34; and (iii) has a GWP of about 150 or less.

Abstract: Methods for forming an improved, centralized refrigeration systems comprising: (a) providing an existing refrigeration circuit with an existing high GWP refrigerant; (b) disconnecting the fluid connection between the existing liquid refrigerant from the condenser and the evaporators; (c) disconnecting the fluid connection between the existing refrigerant vapor from the evaporators and the compressor suction; (d) establishing a new first refrigeration circuit comprising the compressor and the condenser; (e) establishing a new second refrigeration circuit comprising the evaporators by removing existing refrigerant from the evaporators and the disconnected conduits and replacing the removed refrigerant with a second refrigerant comprising at least 50% of R1234ze(E) and being Class A1 and having an OEL greater than 400 and a GWP of about 150 or less; and thermally interconnecting the new first refrigeration circuit and the new second refrigeration circuit with an inter-circuit heat exchanger.

Abstract: A method for transferring heat using a heat transfer facility containing a heat transfer composition, said heat transfer composition including a refrigerant, which includes 2,3,3,3-tetrafluoropropene, and a lubricant. The lubricant includes a polyol ester, and the solubility of the 2,3,3,3-tetrafluoropropene in the lubricant at 0° C. and at an absolute pressure of 2.2 bar is less than the solubility of 1,1,1,2-tetrafluoroethane in the lubricant at 0° C. and at an absolute pressure of 2.0 bar. A method including the successive steps of: evaporating a refrigerant; superheating the refrigerant; and compressing the refrigerant.

Abstract: A composition including a lubricant based on polyol esters (POEs) or PVE and a refrigerant F including from 1 to 99% by weight of trans-1,3,3,3-tetrafluoropropene (trans-HFO-1234ze) and from 1 to 99% by weight of 1,1,1,2-tetrafluoroethane. Also, the use of the composition including a lubricant and refrigerant in refrigeration, air conditioning and heat pumps.

Abstract: A process for conditioning air, by means of a main circuit, the main circuit being a vapor compression circuit, wherein a first refrigerant circulates, and a secondary circuit with no compressor, wherein a non-flammable second refrigerant including a hydrofluoroolefin and/or a hydrochlorofluoroolefin circulates, the main circuit and the secondary circuit being coupled to one another; the process including a heat exchange between the surroundings and the first refrigerant, a heat exchange between the first and second refrigerants, and a heat exchange between the second refrigerant and the air to be conditioned. Also, an air conditioning plant for implementing the process.

Abstract: A process for conditioning air, by means of a main circuit, the main circuit being a vapor compression circuit, wherein a first refrigerant circulates, and a secondary circuit with no compressor, wherein a non-flammable second refrigerant including a hydrofluoroolefin and/or a hydrochlorofluoroolefin circulates, the main circuit and the secondary circuit being coupled to one another; the process including a heat exchange between the surroundings and the first refrigerant, a heat exchange between the first and second refrigerants, and a heat exchange between the second refrigerant and the air to be conditioned. Also, an air conditioning plant for implementing the process.

Abstract: The Invention Relates To A Battery Compartment For An Electric Or Hybrid Vehicle, Characterised In That It Consists Of A Composition Comprising: —20 To 80 Wt % Of Reinforcement Fibres Relative To The Total Weight Of The Composition; —0 To 20 Wt % Of At Least One Impact Modifier Relative To The Total Weight Of The Composition; —0 To 20 Wt % Of Additives Relative To The Total Weight Of The Composition; —The Remainder Being A Matrix Comprising: —Mainly At Least One Polyamide And—At Least One Flame Retardant.

Abstract: A device for use in a circuit for cooling and/or heating a motor vehicle battery, including: an outer casing of a composition including: from 20% to 65% by weight of reinforcing fibers, which do not have thermal conduction properties, the balance being a matrix including at least one polyamide and an inner casing positioned facing the battery and intended to be in contact with a coolant of a composition including: from 5% to 65% by weight of reinforcing fibers, from 10% to 20% by weight of at least one thermally conductive component, when the reinforcing fibers used are not thermally conductive, at least one fire retardant, and the balance being a matrix including at least one polyamide chosen from semiaromatic polyamides and polyamides, a heat transfer fluid inlet; and a heat transfer fluid outlet, the device delimiting a battery cooling and/or heating volume.

Abstract: A composition including between 4 and 6 wt. % of difluoromethane, between 2.5 and 3.5 wt. % of pentafluoroethane, and between 91 and 93.5 wt. % of tetrafluoropropene. The use of the composition as replacement for R404A, R452A, R22, R134a, R245fa, R152a, R422, R502, R407A, R407F, R407C, R1234yf or R1234ze. A heat-transfer composition including the composition and at least one additive chosen from nanoparticles, stabilizing agents, surfactants, tracing agents, fluorescent agents, odorous agents, lubricants, and solubilizing agents.

Abstract: A method for heating and/or air-conditioning in a motor vehicle interior by means of a reversible refrigeration loop in which a refrigerant fluid circulates, said fluid including: between 4 and 6 wt. % of difluoromethane (HFC-32); between 2.5 and 3.5 wt. % of pentafluoroethane (HFC-125); and between 91 and 93.5 wt. % of tetrafluoropropene, preferably 2,3,3,3-tetrafluoropropene.

Abstract: The invention relates to a method for cooling or heating a fluid or a body by means of a vapour compression circuit containing a heat transfer fluid, said circuit being at least partially contained in an enclosure, and the relative humidity of the air in the enclosure being less than or equal to a threshold value H1 which is less than 50%, the flammability of the heat transfer fluid at relative humidity H1 being less than the flammability of the heat transfer fluid at 50% relative humidity. The invention also relates to a cooling or heating installation suited to the implementation of this method. The invention also relates to a method of protection against the risks of fire or explosion in an enclosure containing at least partially a vapour compression circuit containing a heat transfer fluid, as well as a method for reducing the GWP of a transfer fluid. The invention also relates to heat transfer fluids suited to the implementation of the above methods.

Abstract: A heat transfer process using a composition containing hydro(chloro)fluoroolefins. A heat transfer process that successively includes a step of evaporation of a refrigerant, a step of compression, a step of condensation of said refrigerant at a temperature greater than or equal to 70° C. and a step of expansion of said refrigerant characterized in that the refrigerant includes at least one hydrofluoroolefin having at least four carbon atoms represented by the formula (I) R1CH?CHR2 in which R1 and R2 independently represent alkyl groups having from 1 to 6 carbon atoms, substituted with at least one fluorine atom, optionally with at least one chlorine atom.

Abstract: Azeotropic compositions including between 74 and 81.5 wt.-% HFO-1324yf, between 6.5 and 10.5 wt.-% HFC-134a, and between 12 and 16 wt.-% HFC-152a, relative to the total weight of the composition, the azeotropic composition having a boiling point of between ?40.00° C. and 70.00° C., at a pressure of between 0.5 and 21.0 bar abs (±0.5%). Also, the uses of the aforementioned compositions in heat transfer systems.

Abstract: A composition including: trifluoroethylene; pentafluoroethane; and at least one compound C chosen from the group constituted by difluoromethane, 1,1,1-trifluoropropene, trifluoroethane, 1,1,1,2-tetrafluoroethane, monofluoroethane, 1,1,1,4,4,4-hexafluorobut-2-ene, 3,3,4,4,4-pentafluorobut-1-ene, 2,4,4,4-tetrafluorobut-1-ene, 1,1,1,3,3-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 1,1,2,2-tetrafluoroethane, 1,1-difluoroethane, 1,1,1,3,3-pentafluorobutane, butane, 1,1,1,2,3,3,3-heptafluoropropane, 1-chlorotrifluoropropene, 2-methylbutane, pentane, propane, and mixtures thereof. Also, the uses thereof in refrigeration, air conditioning and heat pumps.

Abstract: The joint use of a C3 to C6 alkene compound comprising a sole double bond and of at least one molecular sieve for limiting or preventing the isomerization of trans-1-chloro-3,3,3-trifluoropropene to cis-1-chloro-3,3,3-trifluoropropene, and/or for limiting or preventing the degradation of trans-1-chloro-3,3,3-trifluoropropene. Also, a method for heating or cooling a fluid or a body, to a method for producing electricity and to a heat transfer installation.

Abstract: A process for conditioning air, by means of a main circuit, the main circuit being a vapor compression circuit, wherein a first refrigerant circulates, and a secondary circuit with no compressor, wherein a non-flammable second refrigerant including a hydrofluoroolefin and/or a hydrochlorofluoroolefin circulates, the main circuit and the secondary circuit being coupled to one another; the process including a heat exchange between the surroundings and the first refrigerant, a heat exchange between the first and second refrigerants, and a heat exchange between the second refrigerant and the air to be conditioned. Also, an air conditioning plant for implementing the process.

Abstract: The present invention relates to a composition comprising: trifluoroethylene; pentafluoroethane; and at least one compound C chosen from the group constituted by difluoromethane, 1,1,1-trifluoropropene, trifluoroethane, 1,1,1,2-tetrafluoroethane, monofluoroethane, 1,1,1,4,4,4-hexafluorobut-2-ene, 3,3,4,4,4-pentafluorobut-1-ene, 2,4,4,4-tetrafluorobut-1-ene, 1,1,1,3,3-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 1,1,2,2-tetrafluoroethane, 1,1-difluoroethane, 1,1,1,3,3-pentafluorobutane, butane, 1,1,1,2,3,3,3-heptafluoropropane, 1-chlorotrifluoropropene, 2-methylbutane, pentane, propane, and mixtures thereof. The present invention also relates to the uses thereof in refrigeration, air conditioning and heat pumps.