Abstract: Provided is a composition containing a refrigerant that has a refrigerating capacity equivalent to that of widely used R404A, and a low GWP. The composition contains a refrigerant that contains difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations.

Abstract: The present invention provides a refrigerant composition having performance such as ASHRAE non-flammability, a large refrigerating capacity, a GWP lower than that of HFC-134a, and a COP that is equal to that of HFC-134a. A refrigerant composition comprising HFO-1234ze(E) and HFC-134, which is for use in at least one refrigeration apparatus selected from the group consisting of refrigerators, freezers, water coolers, ice makers, refrigerating showcases, freezing showcases, freezing and refrigerating units, refrigerating machines for freezing and refrigerating warehouses, chillers (chilling units), turbo refrigerating machines, and screw refrigerating machines.

Abstract: A problem to be solved is to provide a composition containing a refrigerant that satisfies the following four properties: (1) a GWP of 1500 or less, (2) ASHRAE non-flammability, (3) a COP equivalent to that of R410A, and (4) a refrigerating capacity equivalent to that of R410A. As a solution to the problem, provided is a composition containing a refrigerant that contains CO2, R32, R125, and R134a, wherein when the mass % of CO2, R32, R125, and R134a based on their sum in the refrigerant is respectively x, a, b, and c, coordinates (a,b,c) in a ternary composition diagram in which 2.7?x<6.0, and the sum of R32, R125, and R134a is (100?x) mass % fall within a triangular region surrounded by line segments that connect point E, point F, and point G, or on the line segments; or coordinates (a,b,c) in a ternary composition diagram in which 6.0?x<9.0 fall within a triangular region surrounded by line segments that connect point E, point F, and point G, or on the line segments.

Abstract: This invention provides a composition comprising a refrigerant, the composition being non-flammable like R404A (R125/R134a/R143a=44/4/52 wt %), and having a refrigerating capacity that can replace that of R404A, a COP that is equal or superior to that of R404A, and a GWP of 1500 or less. Specifically, the invention provides a composition comprising a refrigerant, the refrigerant comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), and 1,1,1,2-tetrafluoroethane (R134a) at specific concentrations, the fluorinated hydrocarbons contained in the mixture having a specific composition ratio. This composition is for use as an alternative refrigerant for R22 or an alternative refrigerant for R404A.

Abstract: Provided is an alternative mixed refrigerant that has an acceptable concentration (OEL) of 400 ppm or more based on the entire composition, as calculated with the OEL of R1234yf as 200 ppm. A solution is to provide a composition containing a refrigerant that contains difluoromethane (R32), 2,3,3,3-tetrafluoropropene (R1234yf), and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)), wherein the three components have a mass ratio that falls within the region surrounded by lines a, b, c, d, and e that connect 5 points (points A, B, C, D, and E) of a ternary composition diagram that has the three components as vertices of FIG. 1.

Abstract: The present invention provides a composition containing a refrigerant having characteristics equal to or higher than those of R23. Specifically, the present invention provides a composition containing a refrigerant, wherein the refrigerant contains (a) at least one perfluorocarbon (PFC) selected from the group consisting of PFC-14, PFC-116, PFC-c216, FFC-218, PFC-c318, and PFC-31-10, and (b) an unsaturated compound.

Abstract: The present disclosure provides a mixed refrigerant having four types of performance, i.e., an excellent coefficient of performance and refrigerating capacity that allow it to serve as an alternative refrigerant for R410A, a sufficiently low GWP, and non-flammability. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trifluoroiodomethane (CF3I) and difluoromethane (R32), wherein the contents of CF3I and R32 in the refrigerant are respectively 48 mass %?CF3?46 mass % and 54 mass %?R32?52 mass %, based on the total amount of CF3I and R32 taken as 100 mass %.

Abstract: The present invention provides a method for using, as an alternative refrigerant for R404A that is currently widely used, a refrigerant that has, for example, a non-flammability similar to that of R404A, a refrigerating capacity that can replace that of R404A, a COP equal or superior to that of R404A, and a lower GWP than that of R404A, as a refrigerant for a cooling system; as well as a refrigeration unit using the refrigerant. The method uses a mixture of fluorinated hydrocarbons as a refrigerant, (1) the mixture comprising difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2-tetrafluoroethane (R134a) in amounts such that the sum of the concentrations thereof is 99.5 wt % or more; (2) the composition ratio of the fluorinated hydrocarbons contained in the mixture falling within a triangle having, as vertices, the following three points in a ternary composition diagram in which the sum of the concentrations of R32, R125, and R134a is 100 wt %, point A (R32/R125/R134a=37.3/17.0/45.

Abstract: The present invention provides a refrigerant-containing composition by using a refrigerant that has a refrigerating capacity equivalent to that of widely used R404A, and a low GWP. Specifically, the present invention provides a composition that contains a refrigerant containing difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), 2,3,3,3-tetrafluropropene (R1234yf), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations.

Abstract: Provided is a method for transferring a refrigerant composition containing three components (difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane) such that the compositional change of the liquid phase due to the phase transition that occurs in the supply source when transferring the refrigerant composition falls within a tolerance range. The method for transferring a refrigerant composition containing difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane includes transferring a refrigerant composition from a liquid phase in a supply source to a supply destination, wherein the liquid phase of the refrigerant composition in the supply source before the transfer contains 32.5 to 33.5 wt % of difluoromethane, 14.3 to 16.0 wt % of pentafluoroethane, and 50.5 to 53.2 wt % of 1,1,1,2-tetrafluoroethane.

Abstract: The present invention provides a refrigerant composition that has a low GWP and ASHRAE non-flammability performance. Specifically, the present invention provides a composition comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a), and 2,3,3,3-tetrafluoropropene (1234yf) at specific concentrations.

Abstract: The present invention provides a refrigerant composition that has a low GWP and ASHRAE non-flammability performance. Specifically, the present invention provides a composition comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a), and 2,3,3,3-tetrafluoropropene (1234yf) at specific concentrations.

Abstract: An object is to provide a refrigerant composition that is comprehensively excellent in various properties usually required of refrigerants, i.e., (1) low GWP, stability, and minimized temperature glide, as well as in essential properties required of alternative refrigerants for R404A, i.e., (2) refrigerating capacity, compressor outlet pressure, and COP that are substantially equivalent to those of R404A. In order to achieve this object, a composition containing a refrigerant is provided wherein the refrigerant contains difluoromethane (R32), trifluoroethylene (R1123), and 2,3,3,3-tetrafluoropropene (R1234yf) at a mass ratio that falls within the region surrounded by lines a, c and d, which connect the following three points in a ternary composition diagram of FIG. 1 whose vertices represent the three components: point A (R32/R1123/R1234yf=25.6/13.4/61.0 mass %); point B (R32/R1123/R1234yf=25.6/3.4/71.0 mass %); and point C (R32/R1123/R1234yf=3.9/36.5/59.6 mass %).

Abstract: Provided is an alternative mixed refrigerant that has an acceptable concentration (OEL) of 400 ppm or more based on the entire composition, as calculated with the OEL of R1234yf as 200 ppm. A solution is to provide a composition containing a refrigerant that contains difluoromethane (R32), 2,3,3,3-tetrafluoropropene (R1234yf), and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)), wherein the three components have a mass ratio that falls within the region surrounded by lines a, b, c, d, and e that connect 5 points (points A, B, C, D, and E) of a ternary composition diagram that has the three components as vertices of FIG. 1.

Abstract: This invention provides a composition comprising a refrigerant, the composition being non-flammable like R404A (R125/R134a/R143a=44/4/52 wt %), and having a refrigerating capacity that can replace that of R404A, a COP that is equal or superior to that of R404A, and a GWP of 1500 or less. Specifically, the invention provides a composition comprising a refrigerant, the refrigerant comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), and 1,1,1,2-tetrafluoroethane (R134a) at specific concentrations, the fluorinated hydrocarbons contained in the mixture having a specific composition ratio. This composition is for use as an alternative refrigerant for R22 or an alternative refrigerant for R404A.

Abstract: Provided is a method for transferring a refrigerant composition containing three components (difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane) such that the compositional change of the liquid phase due to the phase transition that occurs in the supply source when transferring the refrigerant composition falls within a tolerance range. The method for transferring a refrigerant composition containing difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane includes transferring a refrigerant composition from a liquid phase in a supply source to a supply destination, wherein the liquid phase of the refrigerant composition in the supply source before the transfer contains 32.5 to 33.5 wt % of difluoromethane, 14.3 to 16.0 wt % of pentafluoroethane, and 50.5 to 53.2 wt % of 1,1,1,2-tetrafluoroethane.

Abstract: The present invention provides a mixed refrigerant having (1) a superior cooling COP compared to R410A, which is an existing alternative refrigerant to R22, and (2) an equal or superior refrigerating effect in comparison with R22, even under conditions of use in which the condensation temperature setting is high, such as at a high outside air temperature. The present invention pertains to a composition containing refrigerants, the refrigerant containing HFC-32, HFC-125, and HFC-134a, the mass ratio of the three components being, in a ternary composition diagram having the three components as respective apexes, in the range of a triangle having the following three points as apexes: point A (HFC32/HFC125/HFC134a=36/25/39 mass %); point B (HFC32/HFC125/HFC134a=36/31/33 mass %); and point C (HFC32/HFC125/HFC134a=43/34/23 mass %).

Abstract: The problem to be solved by the present invention is to provide a novel mixed refrigerant that can be an alternative for HCFC-123, has a low ODP and a low GWP, has a COP equal to that of HCFC-123, and has a refrigerating capacity and gas density higher than those of single refrigerants, such as HCFO-1233zd(E) and HFC-245fa, which are being considered as alternative refrigerants for HCFC-123. A composition comprising a refrigerant, wherein the refrigerant comprises HCFO-1233zd(E) and HFC-245fa, and has a mass ratio of HCFO-1233zd(E) to HFC-245fa of 18:82 to 49:51 is provided as a means for solving the above problem.

Abstract: The present invention provides a refrigerant composition that has a low GWP and ASHRAE non-flammability performance. Specifically, the present invention provides a composition comprising a mixture of fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a), and 2,3,3,3-tetrafluoropropene (1234yf) at specific concentrations.

Abstract: The present invention provides a method for using, as an alternative refrigerant for R404A that is currently widely used, a refrigerant that has, for example, a non-flammability similar to that of R404A, a refrigerating capacity that can replace that of R404A, a COP equal or superior to that of R404A, and a lower GWP than that of R404A, as a refrigerant for a cooling system; as well as a refrigeration unit using the refrigerant. The method uses a mixture of fluorinated hydrocarbons as a refrigerant, (1) the mixture comprising difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2-tetrafluoroethane (R134a) in amounts such that the sum of the concentrations thereof is 99.5 wt % or more; (2) the composition ratio of the fluorinated hydrocarbons contained in the mixture falling within a triangle having, as vertices, the following three points in a ternary composition diagram in which the sum of the concentrations of R32, R125, and R134a is 100 wt %, point A (R32/R125/R134a=37.3/17.0/45.