Heat transfer composition as well as preparation method and application thereof

Abstract

The invention provides a heat transfer composition as well as a preparation method and application thereof. The heat transfer composition comprises fluoroalkane, first fluorohydrocarbon, second fluorohydrocarbon and a carbon-oxygen compound or / and hydrocarbon, the content of the fluoroalkane, the content of the first fluorohydrocarbon and the content of the second fluorohydrocarbon are x%, y% and z% respectively on the basis that the total mass of the fluoroalkane, the first fluorohydrocarbon and the second fluorohydrocarbon is 100%, a point A (47.3, 5.4 and 47.3), a point B (47.3, 35.6 and 17.1), a point C (5.0, 68.2 and 26.8) and a point D (5.0, 22.4 and 72.6) exist in a component three-phase diagram, and coordinates (x, y and z) are located on a line segment AB, a line segment BC, a line segment CD and a line segment DA or located in an area defined by the four line segments. The heat transfer composition is low in GWP value, environmentally friendly, good in heat exchange effect and wide in application scene.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration and heating, and particularly relates to a heat transfer composition, a preparation method thereof, and an application thereof Background Art

[0002] With the increasing global attention to the problems of ozone layer depletion and greenhouse effect, the international community has successively formulated the Montreal Protocol and the Kyoto Protocol to phase out chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), and to limit the emissions of greenhouse gases. Through the implementation of these agreements, the Montreal Protocol has successfully phased out nearly 99% of the ozone-depleting substances. However, substances to be phased out such as HCFC-22 (R22) have a moderate boiling point temperature range and excellent refrigeration (heating) performance, and there is a lack of alternative substances with zero ODP (ozone depletion potential) value, low GWP (global warming potential) value, and excellent performance

[0003] As an HCFCs refrigerant widely used in the refrigeration and air-conditioning fields, R22 is widely popular due to its excellent refrigeration performance and safety. However, the GWP (global warming potential) value of R22 is 1760, and it still has an ODP (ozone depletion potential) value of 0.055. Therefore, according to the requirements of the Montreal Protocol and the Kyoto Protocol, its gradual phase-out has become an inevitable trend. In this context, it is particularly important to develop environmentally friendly refrigerants to replace R22. These alternative refrigerants not only need to meet the refrigeration performance comparable to that of R22, but also should have a zero ODP value and as low a GWP value as possible to meet the current environmental protection standards

[0004] There are already various refrigeration compositions for replacing R22 on the existing market, and their GWP values range from 150 to 1500. However, some of them are not conducive to direct replacement with R22 systems due to their high boiling points, and their refrigeration efficiency is lower than that of R22 under low-temperature conditions; some still have problems with the compatibility with existing R22 refrigeration systems, increasing the replacement cost and technical complexity

[0005] Therefore, although there are already various alternative refrigerants to replace R22 available on the market, such as R410A, the market still needs to further develop new refrigerants with low GWP values, zero ODP values, and comparable performance to R22 to better meet the global environmental protection requirements and achieve effective replacement of R22 / R410A Summary of the Invention

[0006] In view of this, an object of the present application is to provide a heat transfer composition with a low GWP value, environmental friendliness, good heat exchange effect, and wide application scenarios, so as to solve the problems of serious greenhouse effect, poor refrigeration effect, and high cost existing in the prior art

[0007] Another object of the present application is to provide a method for preparing a heat transfer composition.

[0008] Yet another object of the present application is to provide an application of the heat transfer composition in a heat exchange device.

[0009] Yet another object of the present application is to provide a heat transfer method.

[0010] To achieve the above object, a first aspect of the present application provides a heat transfer composition, comprising a first component and a second component. The first component includes fluorinated alkanes, a first fluorinated hydrocarbon, and a second fluorinated hydrocarbon, and the second component includes carbon oxides and / or hydrocarbons.

[0011] Based on the total mass of the fluorinated alkanes, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon being 100%, the content of the fluorinated alkanes is x%, the content of the first fluorinated hydrocarbon is y%, and the content of the second fluorinated hydrocarbon is z%. In the ternary phase diagram of the components of the fluorinated alkanes, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon, there are points A(47.3, 5.4, 47.3), point B(47.3, 35.6, 17.1), point C(5.0, 68.2, 26.8), and point D(5.0, 22.4, 72.6), and the coordinates (x, y, z) are located on line segment AB, line segment BC, line segment CD, line segment DA, or within the region enclosed by line segments AB, BC, CD, and DA.

[0012] A second aspect of the present application provides a method for preparing a heat transfer composition, comprising:

[0013] Mixing the first component and the second component in a liquid phase state.

[0014] A third aspect of the present application relates to the application of the heat transfer composition described in the present application in a heat exchange device, wherein the heat transfer composition circulates as a heat transfer fluid in the heat exchange device.

[0015] A fourth aspect of the present application provides a heat transfer method, comprising: using the heat transfer composition described in the present application as a heat transfer fluid in a heat exchange device.

[0016] The heat transfer composition described in the present application can at least bring the following beneficial effects:

[0017] Compared with the traditional refrigerant R22, the heat transfer composition has a lower GWP value and an ODP value of 0, meeting the requirements of global environmental protection regulations. It can effectively reduce greenhouse gas emissions and has higher environmental friendliness. The heat transfer composition optimizes the heat transfer characteristics and is highly compatible with existing R22 refrigeration / heating systems, eliminating the need for large-scale equipment modification, thus reducing the conversion cost for users. At the same time, the heat transfer composition can provide a higher coefficient of performance (COP) during equipment operation, improving the overall refrigeration / heating performance, and is applicable to multiple application scenarios such as household air conditioners, commercial central air conditioners, cold chain logistics, and industrial refrigeration, providing a safer, energy-saving, and environmentally friendly refrigeration solution for the industry.

[0018] In addition, it has a higher COP and a lower GWP compared to R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Brief Description of the Drawings

[0020] The above-mentioned and / or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings.

[0021] Wherein:

[0022] Figure 1 It is the ternary phase diagram of the components of fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon in the heat transfer composition of the embodiment of the present application.

[0023] Figure 2 It is the ternary phase diagram of the components of the heat transfer composition of the embodiment of the present application when the fluoroalkane is pentafluoroethane, the first fluorohydrocarbon is trans-1,2-difluoroethylene, and the second fluorohydrocarbon is 3,3,3-trifluoropropene.

[0024] Figure 3 It is the ternary phase diagram of the components of the heat transfer composition of the embodiment of the present application when the fluoroalkane is pentafluoroethane, the first fluorohydrocarbon is trans-1,2-difluoroethylene, and the second fluorohydrocarbon is 2,3,3,3-tetrafluoropropene.

[0025] Figure 4 It is the ternary phase diagram of the components of the heat transfer composition of the embodiment of the present application when the fluoroalkane is pentafluoroethane, the first fluorohydrocarbon is trans-1,2-difluoroethylene, and the second fluorohydrocarbon is 1,1-difluoroethane.

[0026] Figure 5 It is the ternary phase diagram of the components of the heat transfer composition of the embodiment of the present application when the fluoroalkane is pentafluoroethane, the first fluorohydrocarbon is trans-1,2-difluoroethylene, and the second fluorohydrocarbon is 1,1,1,2-tetrafluoroethane.

[0027] Figure 6 The component ternary phase diagram when the fluoroalkane in the heat transfer composition of the embodiment of the present application is pentafluoroethane, the first fluorohydrocarbon is difluoromethane, and the second fluorohydrocarbon is 3,3,3-trifluoropropene.

[0028] Figure 7 The component ternary phase diagram when the fluoroalkane in the heat transfer composition of the embodiment of the present application is pentafluoroethane, the first fluorohydrocarbon is difluoromethane, and the second fluorohydrocarbon is 2,3,3,3-tetrafluoropropene.

[0029] Figure 8 The component ternary phase diagram when the fluoroalkane in the heat transfer composition of the embodiment of the present application is pentafluoroethane, the first fluorohydrocarbon is difluoromethane, and the second fluorohydrocarbon is 1,1-difluoroethane.

[0030] Figure 9 The component ternary phase diagram when the fluoroalkane in the heat transfer composition of the embodiment of the present application is pentafluoroethane, the first fluorohydrocarbon is difluoromethane, and the second fluorohydrocarbon is 1,1,1,2-tetrafluoroethane. Detailed implementation manners

[0031] The embodiments of the present application are described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0032] In the present application, the disclosure of a numerical range includes all values within the entire range and the disclosure of further sub-ranges, including the endpoints and sub-ranges given for these ranges.

[0033] In the present application, the raw materials, equipment, etc. involved, unless otherwise specified, are raw materials and equipment that can be obtained through commercial channels or prepared by known methods; the methods involved, unless otherwise specified, are conventional methods.

[0034] When the term "and / or" is used in a list containing two or more items, it means that any one of the listed items can be used alone or in combination with any one or more of the listed items. For example, the expression "A and / or B" is intended to mean A or B or A and B, that is, it only means A, only means B, or means the combination of A and B.

[0035] The term "line segment" refers to the finite part (including two endpoints) between two points on a straight line, and includes at the two endpoints of the line segment and on the line connecting the two endpoints. For example, the coordinate (x, y, z) is located on the line segment AB means that the coordinate (x, y, z) is located at point A, point B, or on their connecting line.

[0036] <Heat transfer composition>

[0037] The following describes a heat transfer composition according to an embodiment of the present application with reference to the accompanying drawings.

[0038] The heat transfer composition of this embodiment includes a first component and a second component. Among them, the first component includes fluorinated alkanes, a first fluorinated hydrocarbon, and a second fluorinated hydrocarbon, and the second component includes carbon oxides and / or hydrocarbons; and,

[0039] Based on the total mass of the fluorinated alkanes, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon being 100%, the content of the fluorinated alkanes is x%, the content of the first fluorinated hydrocarbon is y%, and the content of the second fluorinated hydrocarbon is z%; as Figure 1 shown, in the component ternary phase diagram of the fluorinated alkanes, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon, there are points A(47.3, 5.4, 47.3), point B(47.3, 35.6, 17.1), point C(5.0, 68.2, 26.8), and point D(5.0, 22.4, 72.6), and the coordinates (x, y, z) are located on line segment AB, line segment BC, line segment CD, line segment DA, or within the region enclosed by the line segments AB, BC, CD, and DA.

[0040] The heat transfer composition of the embodiment of the present application has a low GWP value, high CAP and COP, is environmentally friendly, and has good refrigeration (heating) effects, and can effectively replace R22 or R410A.

[0041] In some embodiments, the region enclosed by the line segments AB, BC, CD, and DA is a quadrilateral region.

[0042] In some embodiments, the coordinates (x, y, z) are located on line segment AB(47.3, y, -y + 52.7), line segment BC(x, -0.771x + 72.1, -0.229x + 27.9), line segment CD(5.0, y, -y + 95.0), line segment DA(x, -0.402x + 24.4, -0.598x + 75.6), or within the region enclosed by the line segments AB, BC, CD, and DA.

[0043] Exemplarily, the coordinates (x, y, z) include, but are not limited to, being located at point A(47.3, 5.4, 47.3), point B(47.3, 35.6, 17.1), point C(5.0, 68.2, 26.8), point D(5.0, 22.4, 72.6), point (10, 30, 60), point (20, 20, 60), point (30, 20, 50), point (40, 10, 50), point (10, 50, 40), point (10, 60, 30), point (20, 50, 30), point (30, 40, 30), point (10, 40, 50), point (20, 30, 50), point (30, 30, 40), point (40, 20, 40), etc. At this time, taking the coordinates (x, y, z) being located at point (10, 30, 60) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 10%, the mass content of the first fluorohydrocarbon is 30%, and the mass content of the second fluorohydrocarbon is 60%.

[0044] In the embodiments of the present application, the optional ranges of the specific substances of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide. The following is a demonstration, but it does not limit the scope of the present application accordingly.

[0045] Exemplarily, the fluoroalkane includes, but is not limited to, at least one of pentafluoroethane, 1,1,1-trifluoroethane, etc., and is preferably pentafluoroethane.

[0046] Exemplarily, the first fluorohydrocarbon includes, but is not limited to, at least one of trans-1,2-difluoroethylene and difluoromethane, etc.

[0047] Exemplarily, the second fluorohydrocarbon includes, but is not limited to, at least one of 3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane, and 1,1,1,2-tetrafluoroethane, etc.

[0048] As an optional example, the fluoroalkane is pentafluoroethane, the first fluorohydrocarbon is trans-1,2-difluoroethylene or difluoromethane, and the second fluorohydrocarbon is one of 3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane, and 1,1,1,2-tetrafluoroethane.

[0049] In some embodiments, when the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 3,3,3-trifluoropropene, the optional ranges of the contents of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide. The following is a demonstration, but it does not limit the scope of the present application accordingly. Exemplarily, such as Figure 2As shown, in the ternary phase diagram of the components of the fluorinated alkane pentafluoroethane, the first fluorinated hydrocarbon trans-1,2-difluoroethylene, and the second fluorinated hydrocarbon 3,3,3-trifluoropropene, there are points A1(47.3, 18.0, 34.7), B1(47.3, 30.4, 22.3), C1(5.0, 61.2, 33.8), and D1(5.0, 46.0, 49.0). The coordinates (x, y, z) are located on the line segment A1B1(47.3, y, -y + 52.7), the line segment B1C1(x, -0.728x + 64.8, -0.272x + 35.2), the line segment C1D1(5.0, y, -1.01y + 95.4), the line segment D1A1(x, -0.662x + 49.3, -0.340x + 50.8), or within the region enclosed by the line segments A1B1, B1C1, C1D1, and D1A1. For example, the coordinates (x, y, z) can be at point A1(47.3, 18.0, 34.7), point B1(47.3, 30.4, 22.3), point C1(5.0, 61.2, 33.8), point D1(5.0, 46.0, 49.0), point (10, 50, 40), point (20, 40, 40), point (30, 40, 30), or point (40, 30, 30), etc. Taking the coordinates (x, y, z) at point (10, 50, 40) as an example, it can be understood that: based on the total mass of the fluorinated alkane, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon being 100%, the mass content of the fluorinated alkane is 10%, the mass content of the first fluorinated hydrocarbon trans-1,2-difluoroethylene is 50%, and the mass content of the second fluorinated hydrocarbon 3,3,3-trifluoropropene is 40%. The heat transfer composition having the foregoing characteristics has a higher refrigeration efficiency and CAP than R22, while having a lower GWP than R22, and can achieve an environmentally friendly replacement for R22; at the same time, it has a higher COP and a lower GWP than R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0050] In some embodiments, when the first fluorinated hydrocarbon is trans-1,2-difluoroethylene and the second fluorinated hydrocarbon is 2,3,3,3-tetrafluoropropene, the optional ranges of the contents of the fluorinated alkane, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon are relatively wide, which are demonstrated below, but do not limit the scope of the present application thereby. Exemplarily, such as Figure 3As shown, in the ternary phase diagram of the components of the fluoroalkane pentafluoroethane, the first fluorohydrocarbon trans-1,2-difluoroethylene, and the second fluorohydrocarbon 2,3,3,3-tetrafluoropropene, there are points A2(47.3, 7.9, 44.8), B2(47.3, 22.3, 30.4), C2(5.0, 49.3, 45.7), and D2(5.0, 32.2, 62.8). The coordinates (x, y, z) are located on the line segment A2B2(47.3, y, -0.993y + 52.6), on the line segment B2C2(x, -0.636x + 52.5, -0.362x + 47.5), on the line segment C2D2(5.0, y, -y + 95.0), on the line segment D2A2(x, -0.574x + 35.1, -0.426x + 64.9), or within the region enclosed by the line segments A2B2, B2C2, C2D2, and D2A2. For example, the coordinates (x, y, z) can be located at A2(47.3, 7.9, 44.8), point B2(47.3, 22.3, 30.4), point C2(5.0, 49.3, 45.7), point D2(5.0, 32.2, 62.8), point (10, 40, 50), point (20, 30, 50), point (30, 20, 50), or point (40, 20, 40), etc. At this time, taking the coordinates (x, y, z) located at point (10, 40, 50) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 10%, the mass content of the first fluorohydrocarbon trans-1,2-difluoroethylene is 40%, and the mass content of the second fluorohydrocarbon 2,3,3,3-tetrafluoropropene is 50%. The heat transfer composition with the foregoing characteristics has a higher refrigeration efficiency and CAP than R22, while its GWP is lower than that of R22, enabling an environmentally friendly replacement of R22; at the same time, it has a higher COP and a lower GWP compared to R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0051] In some embodiments, when the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 1,1-difluoroethane, the optional ranges of the contents of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide, which are demonstrated below but do not limit the scope of the present application thereby. Exemplarily, such as Figure 4As shown, in the composition ternary phase diagram of the fluoroalkane pentafluoroethane, the first fluorohydrocarbon trans-1,2-difluoroethylene, and the second fluorohydrocarbon 1,1-difluoroethane, there are points A3(45.9, 22.7, 31.4), B3(46.5, 36.2, 17.3), C3(5.0, 68.2, 26.8), and D3(5.0, 50.4, 44.6). The coordinates (x, y, z) are located on the line segment A3B3(x, -22.5x - 1010.1, -23.7x + 1117.8), the line segment B3C3(x, -0.771x + 72.1, -0.229x + 27.9), the line segment C3D3(5.0, y, -y + 95.0), the line segment D3A3(x, -0.677x + 53.8, -0.320x + 46.2), or within the region enclosed by the line segments A3B3, B3C3, C3D3, and D3A3. For example, the coordinates (x, y, z) can be located at points A3(45.9, 22.7, 31.4), B3(46.5, 36.2, 17.3), C3(5.0, 68.2, 26.8), D3(5.0, 50.4, 44.6), the point (10, 50, 40), the point (10, 60, 30), the point (20, 50, 30), or the point (30, 40, 30), etc. Taking the coordinates (x, y, z) located at the point (20, 50, 30) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 20%, the mass content of the first fluorohydrocarbon trans-1,2-difluoroethylene is 50%, and the mass content of the second fluorohydrocarbon 1,1-difluoroethane is 30%. The heat transfer composition with the foregoing characteristics has a higher refrigeration efficiency and CAP than R22, while its GWP is lower than that of R22, enabling an environmentally friendly replacement for R22; at the same time, it has a higher COP and a lower GWP compared to R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0052] In some embodiments, when the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 1,1,1,2-tetrafluoroethane, the optional ranges of the contents of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide, which are demonstrated below but do not limit the scope of the present application thereby. Exemplarily, such as Figure 5As shown, in the ternary phase diagram of the components of the fluoroalkane pentafluoroethane, the first fluorohydrocarbon trans-1,2-difluoroethylene, and the second fluorohydrocarbon 1,1,1,2-tetrafluoroethane, there are points A4(24.9, 20.5, 54.6), B4(34.4, 33.9, 31.7), C4(5.0, 54.5, 40.5), and D4(5.0, 32.1, 62.9). The coordinates (x, y, z) are located on the line segment A4B4(x, 1.43x - 15.0, -2.44x + 115.3), on the line segment B4C4(x, -0.703x + 58.0, -0.300x + 42.0), on the line segment C4D4(5.0, y, -y + 95.0), on the line segment D4A4(x, -0.583x + 35.0, -0.417x + 65.0), or within the region enclosed by the line segments A4B4, B4C4, C4D4, and D4A4, preferably within the enclosed quadrilateral region. For example, the coordinates (x, y, z) can be at point A4(24.9, 20.5, 54.6), point B4(34.4, 33.9, 31.7), point C4(5.0, 54.5, 40.5), point D4(5.0, 32.1, 62.9), point (10, 40, 50), point (10, 50, 40), point (20, 30, 50), or point (20, 40, 40), etc. Taking the coordinates (x, y, z) at point (20, 40, 40) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 20%, the mass content of the first fluorohydrocarbon trans-1,2-difluoroethylene is 40%, and the mass content of the second fluorohydrocarbon 1,1,1,2-tetrafluoroethane is 40%. The heat transfer composition having the aforementioned characteristics has a higher refrigeration efficiency and CAP than R22, while having a lower GWP than R22, and can achieve an environmentally friendly replacement for R22; at the same time, it has a higher COP and a lower GWP than R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0053] In some embodiments, when the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 3,3,3-trifluoropropene, the optional ranges of the contents of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide, and the following is an exemplary description, but it does not limit the scope of the present application. Exemplarily, such as Figure 6As shown, in the ternary phase diagram of the components of the fluoroalkane pentafluoroethane, the first fluorohydrocarbon difluoromethane, and the second fluorohydrocarbon 3,3,3-trifluoropropene, there are points A5(44.1, 15.0, 40.9), B5(41.8, 26.0, 32.2), C5(5.0, 46.5, 48.5), and D5(5.0, 34.6, 60.4). The coordinates (x, y, z) are located on the line segment A5B5(x, -4.78x + 225.9, 3.78x - 125.9), the line segment B5C5(x, -0.557x + 49.3, -0.443x + 50.7), the line segment C5D5(5.0, y, -y + 95.0), the line segment D5A5(x, -0.501x + 37.1, -0.499x + 62.9), or within the region enclosed by the line segments A5B5, B5C5, C5D5, and D5A5. For example, the coordinates (x, y, z) can be at point A5(44.1, 15.0, 40.9), point B5(41.8, 26.0, 32.2), point C5(5.0, 46.5, 48.5), point D5(5.0, 34.6, 60.4), point (10, 40, 50), point (20, 30, 50), point (30, 30, 40), or point (40, 20, 40), etc. Taking the coordinates (x, y, z) at point (30, 30, 40) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 30%, the mass content of the first fluorohydrocarbon difluoromethane is 30%, and the mass content of the second fluorohydrocarbon 3,3,3-trifluoropropene is 40%. The heat transfer composition with the aforementioned characteristics has a higher refrigeration efficiency and CAP than R22, while having a lower GWP than R22, and can achieve an environmentally friendly replacement for R22; at the same time, it has a higher COP and a lower GWP than R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0054] In some embodiments, when the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 2,3,3,3-tetrafluoropropene, the optional ranges of the contents of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide, which are demonstrated below but do not limit the scope of the present application. Exemplarily, such as Figure 7As shown, in the ternary phase diagram of the components of the fluorinated alkane pentafluoroethane, the first fluorinated hydrocarbon difluoromethane, and the second fluorinated hydrocarbon 2,3,3,3-tetrafluoropropene, there are points A6(46.1, 6.0, 47.9), B6(43.7, 16.8, 39.5), C6(5.0, 34.6, 60.4), and D6(5.0, 22.4, 72.6). The coordinates (x, y, z) are located on the line segment A6B6(x, -4.70x + 222.0, 3.65x - 120.1), the line segment B6C6(x, -0.460x + 36.9, -0.540x + 63.1), the line segment C6D6(5.0, y, -y + 95.0), the line segment D6A6(x, -0.400x + 24.4, -0.602x + 75.6), or within the region enclosed by the line segments A6B6, B6C6, C6D6, and D6A6. For example, the coordinates (x, y, z) can be at point A6(46.1, 6.0, 47.9), point B6(43.7, 16.8, 39.5), point C6(5.0, 34.6, 60.4), point D6(5.0, 22.4, 72.6), point (10, 30, 60), point (20, 20, 60), point (30, 20, 50), or point (40, 10, 50), etc. Taking the coordinates (x, y, z) at point (40, 10, 50) as an example, it can be understood that: based on the total mass of the fluorinated alkane, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon being 100%, the mass content of the fluorinated alkane is 40%, the mass content of the first fluorinated hydrocarbon difluoromethane is 10%, and the mass content of the second fluorinated hydrocarbon 2,3,3,3-tetrafluoropropene is 50%. The heat transfer composition having the aforementioned characteristics has a higher refrigeration efficiency and CAP than R22, while its GWP is lower than that of R22, enabling an environmentally friendly replacement of R22; at the same time, it has a higher COP and a lower GWP compared to R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0055] In some embodiments, when the first fluorinated hydrocarbon is difluoromethane and the second fluorinated hydrocarbon is 1,1-difluoroethane, the optional ranges of the contents of the fluorinated alkane, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon are relatively wide, which are demonstrated below but do not limit the scope of the present application. Exemplarily, such as Figure 8As shown, in the component three-phase diagram of fluoroalkane pentafluoroethane, first fluorohydrocarbon difluoromethane, and second fluorohydrocarbon 1,1-difluoroethane, there are points A7(40.5, 24.7, 34.8), B7(37.8, 40.4, 21.8), C7(5.0, 65.6, 29.4), and D7(5.0, 49.4, 45.6). The coordinates (x, y, z) are located on the line segment A7B7(x, -5.81x + 260.2, 4.81x - 160.2), on the line segment B7C7(x, -0.768x + 69.4, -0.232x + 30.6), on the line segment C7D7(5.0, y, -y + 95.0), on the line segment D7A7(x, -0.696x + 52.9, -0.304x + 47.1), or within the region enclosed by the line segments A7B7, B7C7, C7D7, and D7A7. For example, the coordinates (x, y, z) can be located at point A7(40.5, 24.7, 34.8), point B7(37.8, 40.4, 21.8), point C7(5.0, 65.6, 29.4), point D7(5.0, 49.4, 45.6), point (10, 50, 40), point (10, 60, 30), point (20, 50, 30), or point (30, 40, 30), etc. Taking the coordinates (x, y, z) located at point (10, 60, 30) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 10%, the mass content of the first fluorohydrocarbon difluoromethane is 60%, and the mass content of the second fluorohydrocarbon 1,1-difluoroethane is 30%. The heat transfer composition having the foregoing characteristics has a higher refrigeration efficiency and CAP than R22, while its GWP is lower than that of R22, enabling an environmentally friendly replacement of R22; at the same time, it has a higher COP and a lower GWP compared to R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0056] In some embodiments, when the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 1,1,1,2-tetrafluoroethane, the optional ranges of the contents of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon are relatively wide, which are demonstrated below but do not limit the scope of this application thereby. Exemplarily, such as Figure 9As shown, in the composition ternary phase diagram of the fluoroalkane pentafluoroethane, the first fluorohydrocarbon difluoromethane, and the second fluorohydrocarbon 1,1,1,2 - tetrafluoroethane, there are points A8(22.2, 19.7, 58.1), B8(27.7, 35.6, 36.7), C8(5.0, 51.4, 43.6), and D8(5.0, 29.2, 65.8). The coordinates (x, y, z) are located on the line segment A8B8(x, 2.89x - 44.5, -3.89x + 144.5), on the line segment B8C8(x, -0.696x + 54.9, -0.304x + 45.1), on the line segment C8D8(5.0, y, -y + 95.0), on the line segment D8A8(x, -0.552x + 32.0, -0.448x + 68.0), or within the region enclosed by the line segments A8B8, B8C8, C8D8, and D8A8. For example, the coordinates (x, y, z) can be at points A8(22.2, 19.7, 58.1), B8(27.7, 35.6, 36.7), C8(5.0, 51.4, 43.6), D8(5.0, 29.2, 65.8), point (10, 30, 60), point (10, 40, 50), point (20, 30, 50), or point (20, 40, 40), etc. Taking the coordinates (x, y, z) at point (10, 30, 60) as an example, it can be understood that: based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the mass content of the fluoroalkane is 10%, the mass content of the first fluorohydrocarbon difluoromethane is 30%, and the mass content of the second fluorohydrocarbon 1,1,1,2 - tetrafluoroethane is 60%. The heat transfer composition with the aforementioned characteristics has a higher refrigeration efficiency and CAP than R22, while its GWP is lower than that of R22, enabling an environmentally friendly replacement for R22; at the same time, it has a higher COP and a lower GWP compared to R410A. Therefore, in some cases, it can also be used as a substitute for R410A.

[0057] It can be understood that in the embodiments of the present application, if the region enclosed by the line segments A1B1, B1C1, C1D1, and D1A1 is defined as region a, the region enclosed by the line segments A2B2, B2C2, C2D2, and D2A2 is defined as region b, the region enclosed by the line segments A3B3, B3C3, C3D3, and D3A3 is defined as region c, the region enclosed by the line segments A4B4, B4C4, C4D4, and D4A4 is defined as region d, the region enclosed by the line segments A5B5, B5C5, C5D5, and D5A5 is defined as region e, the region enclosed by the line segments A6B6, B6C6, C6D6, and D6A6 is defined as region f, the region enclosed by the line segments A7B7, B7C7, C7D7, and D7A7 is defined as region g, and the region enclosed by the line segments A8B8, B8C8, C8D8, and D8A8 is defined as region h, then generally, regions a, b, c, d, e, f, g, and h are all quadrilateral regions.

[0058] In addition, point A1(47.3, 18.0, 34.7), point B1(47.3, 30.4, 22.3), point C1(5.0, 61.2, 33.8), point D1(5.0, 46.0, 49.0), point A2(47.3, 7.9, 44.8), point B2(47.3, 22.3, 30.4), point C2(5.0, 49.3, 45.7), point D2(5.0, 32.2, 62.8), point A3(45.9, 22.7, 31.4), point B3(46.5, 36.2, 17.3), point C3(5.0, 68.2, 26.8), point D3(5.0, 50.4, 44.6), point A4(24.9, 20.5, 54.6), point B4(34.4, 33.9, 31.7), point C4(5.0, 54.5, 40.5), point D4(5.0, 32.1, 62.9), point A5(44.1, 15.0, 40.9), point B5(41.8, 26.0, 32.2), point C5(5.0, 46.5, 48.5), point D5(5.0, 34.6, 60.4), point A6(46.1, 6.0, 47.9), point B6(43.7, 16.8, 39.5), point C6(5.0, 34.6, 60.4), point D6(5.0, 22.4, 72.6), A7(40.5, 24.7, 34.8), point B7(37.8, 40.4, 21.8), point C7(5.0, 65.6, 29.4), point D7(5.0, 49.4, 45.6), point A8(22.2, 19.7, 58.1), point B8(27.7, 35.6, 36.7), point C8(5.0, 51.4, 43.6), point D8(5.0, 29.2, 65.8) and the above-mentioned line segments formed by them respectively enclose regions a, region b, region c, region d, region e, region f, region g, region h, etc., on the aforementioned line segment AB, on the line segment BC, on the line segment CD, on the line segment DA or within the region enclosed by the line segment AB, the line segment BC, the line segment CD and the line segment DA.

[0059] In some embodiments, the carbon oxide includes but is not limited to carbon dioxide and the like.

[0060] In other embodiments, the hydrocarbon includes but is not limited to at least one of propane, propylene, etc.

[0061] As a preferred example, the second component includes a carbon oxide, and the carbon oxide is preferably carbon dioxide.

[0062] In the embodiments of the present application, the addition of carbon oxide or / and hydrocarbon can further improve the CAP and COP of the heat transfer composition of the present application, making the heat exchange effect better.

[0063] In the embodiments of the present application, the optional range of the mass content of the carbon oxide or / and hydrocarbon in the heat transfer composition is relatively wide, which is demonstrated below, but does not limit the scope of the present application accordingly.

[0064] In some embodiments, the mass content of the carbon oxide or / and hydrocarbon in the heat transfer composition is 0.1-6%. When the content of the carbon oxide or / and hydrocarbon is within the above range, the refrigeration (heating) capacity can be improved and the average boiling point can be appropriately adjusted; if it is less than 0.1%, it can be classified as an impurity and there is no obvious performance improvement effect; if it is higher than 6%, it may cause excessive temperature slip, and hydrocarbons may cause excessive flammability.

[0065] Exemplarily, the mass content of the carbon oxide or / and hydrocarbon in the heat transfer composition includes but is not limited to 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5% or 5.5%, etc., and is preferably 2-5%.

[0066] In order to further improve the CAP and COP of the heat transfer composition and make the heat exchange effect better, in some cases, the heat transfer composition further includes a third component.

[0067] In the embodiments of the present application, the optional range of the third component is relatively wide, which is demonstrated below, but does not limit the scope of the present application accordingly.

[0068] In some embodiments, the third component includes but is not limited to at least one of a third fluorohydrocarbon, a C1-C4 hydrocarbon, trifluoroiodomethane, dimethyl ether, etc.

[0069] Among them, the optional range of the third fluorohydrocarbon is relatively wide, and the purpose of the present application can be achieved by fluorinated olefins other than trans-1,2-difluoroethylene, 3,3,3-trifluoropropene and 2,3,3,3-tetrafluoropropene.

[0070] Exemplarily, the third fluorohydrocarbon includes but is not limited to at least one of 1,1,2-trifluoroethylene, trans-1,3,3,3-tetrafluoropropene and hexafluoropropene, etc.

[0071] As an optional example, the third fluorohydrocarbon is at least one of 1,1,2-trifluoroethylene and hexafluoropropene.

[0072] Among them, the optional range of the C1-C4 hydrocarbon is relatively wide, and the purpose of the present application can be achieved as long as the hydrocarbon has 1 to 4 carbon atoms.

[0073] Exemplarily, the C1-C4 hydrocarbon includes but is not limited to at least one of propane and isobutane, etc.

[0074] Exemplarily, the mass content of the third component in the heat transfer composition is 0.1-10%, including but not limited to 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8% or 9%, etc.

[0075] The heat transfer composition of the embodiments of the present application is particularly suitable as a substitute for the heat transfer composition R22 or R410A.

[0076] <Preparation method of heat transfer composition>

[0077] In the embodiments of the present application, as long as the heat transfer composition has the foregoing technical features, the object of the present invention can be achieved, and there are no special requirements for its preparation method. The following is a demonstration of the preparation method of the heat transfer composition, but it does not limit the scope of the present application.

[0078] As an optional example, the preparation method of the heat transfer composition includes: mixing the first component and the second component in a liquid state.

[0079] As another optional example, when the heat transfer composition includes the third component, the preparation method of the heat transfer composition includes: mixing the first component, the second component and the third component in a liquid state.

[0080] <Application of heat transfer composition>

[0081] The heat transfer composition of the embodiments of the present application can be widely used in heat exchange devices, especially as a heat transfer fluid to circulate in the heat exchange device, especially as a heat transfer fluid to replace R22 or R410A to circulate in the heat exchange device.

[0082] In the embodiments of the present application, there are no special requirements for the heat exchange device, and common types can achieve the object of the present application.

[0083] Exemplarily, the heat exchange device includes but is not limited to one of a household heat exchange device, a commercial heat exchange device, a heat exchange device for a heat pump system, a heat exchange device for refrigeration equipment, a heat exchange device for industrial refrigeration, a heat exchange device for an automobile, a heat exchange device for a data center, or a heat exchange device for mobile refrigeration equipment, etc.

[0084] Exemplarily, the above heat exchange device can be a heat exchanger, etc.

[0085] The application of the heat transfer composition with the foregoing characteristics is adapted to a variety of heat exchange devices during the application process, and can directly replace the heat transfer composition R22 without the need to modify or replace the original heat exchange device, and the application cost is low.

[0086] <Heat transfer method>

[0087] The heat transfer method of the embodiment of the present application includes: using the heat transfer composition of the embodiment of the present application as a heat transfer fluid in a heat exchange device.

[0088] As an alternative example, the heat transfer composition is used as a heat transfer fluid in a heat exchange device to replace R22 or R410A.

[0089] In the heat transfer method of the embodiment of the present application, the heat exchange device may be the same as the heat exchange device involved in the above application process, which will not be elaborated here.

[0090] Some features of the present technology are further illustrated in the following non-limiting examples.

[0091] I. Examples and Comparative Examples

[0092] Example 1

[0093] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene, and 6 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0094] Example 2

[0095] 20 g of pentafluoroethane, 40 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene, and 4 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0096] Example 3

[0097] 30 g of pentafluoroethane, 40 g of trans-1,2-difluoroethylene, 30 g of 3,3,3-trifluoropropene, and 5 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0098] Example 4

[0099] 40 g of pentafluoroethane, 30 g of trans-1,2-difluoroethylene, 30 g of 3,3,3-trifluoropropene, and 4 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0100] Example 5

[0101] 10 g of pentafluoroethane, 40 g of trans-1,2-difluoroethylene, 50 g of 2,3,3,3-tetrafluoropropene, and 6 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0102] Example 6

[0103] 20 g of pentafluoroethane, 30 g of trans-1,2-difluoroethylene, 50 g of 2,3,3,3-tetrafluoropropene and 4 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0104] Example 7

[0105] 30 g of pentafluoroethane, 20 g of trans-1,2-difluoroethylene, 50 g of 2,3,3,3-tetrafluoropropene and 6 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0106] Example 8

[0107] 40 g of pentafluoroethane, 20 g of trans-1,2-difluoroethylene, 40 g of 2,3,3,3-tetrafluoropropene and 4 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0108] Example 9

[0109] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 1,1-difluoroethane and 6 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0110] Example 10

[0111] 10 g of pentafluoroethane, 60 g of trans-1,2-difluoroethylene, 30 g of 1,1-difluoroethane and 4 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0112] Example 11

[0113] 20 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 30 g of 1,1-difluoroethane and 2 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0114] Example 12

[0115] 30 g of pentafluoroethane, 40 g of trans-1,2-difluoroethylene, 30 g of 1,1-difluoroethane and 1 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0116] Example 13

[0117] 10 g of pentafluoroethane, 40 g of trans-1,2-difluoroethylene, 50 g of 1,1,1,2-tetrafluoroethane and 6 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0118] Example 14

[0119] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 1,1,1,2-tetrafluoroethane and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0120] Example 15

[0121] 20 g of pentafluoroethane, 30 g of trans-1,2-difluoroethylene, 50 g of 1,1,1,2-tetrafluoroethane and 2 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0122] Example 16

[0123] 20 g of pentafluoroethane, 40 g of trans-1,2-difluoroethylene, 40 g of 1,1,1,2-tetrafluoroethane and 4 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0124] Example 17

[0125] 10 g of pentafluoroethane, 40 g of difluoromethane, 50 g of 3,3,3-trifluoropropene and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0126] Example 18

[0127] 20 g of pentafluoroethane, 30 g of difluoromethane, 50 g of 3,3,3-trifluoropropene and 4 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0128] Example 19

[0129] 30 g of pentafluoroethane, 30 g of difluoromethane, 40 g of 3,3,3-trifluoropropene and 5 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0130] Example 20

[0131] 40 g of pentafluoroethane, 20 g of difluoromethane, 40 g of 3,3,3-trifluoropropene and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0132] Example 21

[0133] 10 g of pentafluoroethane, 30 g of difluoromethane, 60 g of 2,3,3,3-tetrafluoropropene and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0134] Example 22

[0135] 20 g of pentafluoroethane, 20 g of difluoromethane, 60 g of 2,3,3,3 - tetrafluoropropene and 4 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0136] Example 23

[0137] 30 g of pentafluoroethane, 20 g of difluoromethane, 50 g of 2,3,3,3 - tetrafluoropropene and 5 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0138] Example 24

[0139] 40 g of pentafluoroethane, 10 g of difluoromethane, 50 g of 2,3,3,3 - tetrafluoropropene and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0140] Example 25

[0141] 10 g of pentafluoroethane, 50 g of difluoromethane, 40 g of 1,1 - difluoroethane and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0142] Example 26

[0143] 10 g of pentafluoroethane, 60 g of difluoromethane, 30 g of 1,1 - difluoroethane and 4 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0144] Example 27

[0145] 20 g of pentafluoroethane, 50 g of difluoromethane, 30 g of 1,1 - difluoroethane and 2 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0146] Example 28

[0147] 30 g of pentafluoroethane, 40 g of difluoromethane, 30 g of 1,1 - difluoroethane and 1 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0148] Example 29

[0149] 10 g of pentafluoroethane, 30 g of difluoromethane, 60 g of 1,1,1,2 - tetrafluoroethane and 5 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0150] Example 30

[0151] 10 g of pentafluoroethane, 40 g of difluoromethane, 50 g of 1,1,1,2-tetrafluoroethane and 4 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0152] Example 31

[0153] 20 g of pentafluoroethane, 30 g of difluoromethane, 50 g of 1,1,1,2-tetrafluoroethane and 2 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0154] Example 32

[0155] 20 g of pentafluoroethane, 40 g of difluoromethane, 40 g of 1,1,1,2-tetrafluoroethane and 4 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0156] Example 33 (compared with Example 1, the content of the carbon oxide is the upper limit of 6%)

[0157] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene and 8 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0158] Example 34 (compared with Example 1, the carbon oxide is replaced by a hydrocarbon)

[0159] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene and 6 g of propylene are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0160] Example 35 (compared with Example 1, the fluorinated alkane is not pentafluoroethane)

[0161] 10 g of 1,1,1-trifluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene and 6 g of carbon dioxide are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0162] Example 36 (compared with Example 1, containing a third component, and the third component is 1,1,2-trifluoroethylene with a content of 5.4%)

[0163] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene, 6 g of carbon dioxide and 6 g of 1,1,2-trifluoroethylene are mixed in the liquid phase to obtain the heat transfer composition of this example.

[0164] Example 37 (compared with Example 1, containing a third component, and the third component is hexafluoropropene with a content of 5.4%)

[0165] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene, 6 g of carbon dioxide and 6 g of hexafluoropropene were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0166] Example 38 (compared with Example 1, containing a third component, and the third component is a mixture of trifluoroiodomethane and trans-1,3,3,3-tetrafluoropropene mixed in a mass ratio of 1:1, with a content of 1.2%)

[0167] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene, 6 g of carbon dioxide, 0.65 g of trifluoroiodomethane and 0.65 g of trans-1,3,3,3-tetrafluoropropene were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0168] Example 39 (compared with Example 1, containing a third component, and the third component is a mixture of hexafluoropropene, trifluoroiodomethane and dimethyl ether mixed in a mass ratio of 1:1:0.9, with a content of about 10%)

[0169] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene, 40 g of 3,3,3-trifluoropropene, 6 g of carbon dioxide, 4 g of hexafluoropropene, 4 g of trifluoroiodomethane and 3.6 g of dimethyl ether were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0170] Comparative Example 1

[0171] The heat transfer composition is R22.

[0172] Comparative Example 2

[0173] The heat transfer composition is R410A.

[0174] Comparative Example 3 (compared with Example 1, without carbon-oxygen / carbon-hydrogen compounds)

[0175] 10 g of pentafluoroethane, 50 g of trans-1,2-difluoroethylene and 40 g of 3,3,3-trifluoropropene were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0176] Comparative Example 4 (compared with Example 1, the ratio of fluoroalkanes, the first fluoroalkane and the second fluoroalkane is not within the range defined in Claim 1 of this application)

[0177] 70 g of pentafluoroethane, 10 g of trans-1,2-difluoroethylene, 20 g of 3,3,3-trifluoropropene and 6 g of carbon dioxide were mixed in the liquid phase to obtain the heat transfer composition of this example.

[0178] II. Performance Test

[0179] 1. Using the Fluid Thermodynamics and Transport Properties Database Refprop10.0 of the National Institute of Standards and Technology in the United States, the average boiling point, relative CAP, and relative COP of the heat transfer compositions of each example or comparative example were obtained through theoretical calculations. Among them, CAP: Under the conditions of a refrigeration and heating cycle, it is the product of the latent heat value and the vapor density of the heat transfer composition.

[0180] COP: Under the refrigeration (or heating) cycle conditions of an evaporation temperature of 5°C, a condensation temperature of 45°C, a superheat temperature of 10K, a subcooling temperature of 5K, and a compressor efficiency of 70%, it is the ratio of the refrigeration capacity (or heating capacity) of the heat transfer composition to the power consumption of the compressor.

[0181] Relative CAP, relative COP: They are the ratios of the CAP and COP values of the composition to the CAP and COP of R22.

[0182] 2. The GWP value of the heat transfer composition of each example or comparative example was calculated by the weighted average of the GWP values of each component of the heat transfer composition according to the mass fraction. The GWP values of each component were taken from the Fifth Assessment Report of the Intergovernmental Panel on Climate Change of the United Nations.

[0183] The calculation results of the average boiling point, relative CAP, relative COP, and GWP value of the heat transfer compositions of each example and comparative example are shown in Table 1.

[0184] Table 1 Average Boiling Point, Relative CAP, Relative COP, GWP of the Heat Transfer Compositions of Examples and Comparative Examples

[0185]

[0186]

[0187] As can be seen from Table 1, the heat transfer compositions of the embodiments of the present application have higher CAP and COP compared to R22, and the GWP value has decreased significantly. At the same time, by comparing Example 1 and Comparative Example 3, it can be seen that the addition of carbon oxygen / hydrocarbon in Example 1 can improve the CAP and COP of the heat transfer composition, making the heat exchange effect better; by comparing Example 1 and Comparative Example 4, it can be seen that when the amounts of fluorinated alkane, the first fluorinated hydrocarbon, and the second fluorinated hydrocarbon are within the ranges defined in the present application, it is possible to achieve both a refrigeration efficiency COP and CAP higher than that of R22 while having a GWP lower than that of R22, enabling an environmentally friendly alternative to R22. When the heat transfer composition does not contain the carbon oxygen compound and / or hydrocarbon of the present application, as shown in Comparative Example 3, it is impossible to achieve both a refrigeration efficiency COP and CAP higher than that of R22; when the ratio of fluorinated alkane, the first fluorinated alkane, and the second fluorinated alkane in the heat transfer composition exceeds the range defined in the present application, as shown in Comparative Example 4, although the refrigeration efficiency COP and CAP are both higher than that of R22, the GWP is significantly higher than that of R22.

[0188] In addition, the heat transfer compositions of the embodiments of the present application also have a higher COP and a lower GWP value compared to R410A.

[0189] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0190] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0191] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A heat transfer composition, characterized in that, It includes a first component and a second component. The first component includes a fluoroalkane, a first fluorohydrocarbon, and a second fluorohydrocarbon. The second component includes a carbon oxide and / or a hydrocarbon; Based on the total mass of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon being 100%, the content of the fluoroalkane is x%, the content of the first fluorohydrocarbon is y%, and the content of the second fluorohydrocarbon is z%. In the ternary phase diagram of the components of the fluoroalkane, the first fluorohydrocarbon, and the second fluorohydrocarbon, there are points A(47.3, 5.4, 47.3), point B(47.3, 35.6, 17.1), point C(5.0, 68.2, 26.8), and point D(5.0, 22.4, 72.6). The coordinates (x, y, z) are located on line segment AB, line segment BC, line segment CD, line segment DA, or within the region enclosed by line segments AB, BC, CD, and DA.

2. The heat transfer composition according to claim 1, wherein The mass content of the carbon oxide and / or the hydrocarbon in the heat transfer composition is 0.1 - 6%; and / or, The coordinates (x, y, z) are located on line segment AB(47.3, y, -y + 52.7), line segment BC(x, -0.771x + 72.1, -0.229x + 27.9), line segment CD(5.0, y, -y + 95.0), line segment DA(x, -0.402x + 24.4, -0.598x + 75.6), or within the region enclosed by line segments AB, BC, CD, and DA.

3. The heat transfer composition according to claim 1, characterized in that, The fluoroalkane includes at least one of pentafluoroethane and 1,1,1 - trifluoroethane; and / or, The first fluorohydrocarbon includes at least one of trans - 1,2 - difluoroethylene and difluoromethane; and / or, The second fluorohydrocarbon includes at least one of 3,3,3 - trifluoropropene, 2,3,3,3 - tetrafluoropropene, 1,1 - difluoroethane, and 1,1,1,2 - tetrafluoroethane; and / or, The carbon oxide includes carbon dioxide; and / or, The hydrocarbon includes at least one of propane and propylene.

4. The heat transfer composition according to claim 3, wherein The fluoroalkane is pentafluoroethane, the first fluorohydrocarbon is trans - 1,2 - difluoroethylene or difluoromethane, and the second fluorohydrocarbon is one of 3,3,3 - trifluoropropene, 2,3,3,3 - tetrafluoropropene, 1,1 - difluoroethane, and 1,1,1,2 - tetrafluoroethane.

5. The heat transfer composition according to claim 4, wherein When the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 3,3,3-trifluoropropene, in the component ternary phase diagram, there exist point A1(47.3, 18.0, 34.7), point B1(47.3, 30.4, 22.3), point C1(5.0, 61.2, 33.8) and point D1(5.0, 46.0, 49.0), and the coordinates (x, y, z) are located on the line segment A1B1(47.3, y, -y + 52.7), on the line segment B1C1(x, -0.728x + 64.8, -0.272x + 35.2), on the line segment C1D1(5.0, y, -1.01y + 95.4), on the line segment D1A1(x, -0.662x + 49.3, -0.340x + 50.8) or within the region enclosed by the line segments A1B1, the line segment B1C1, the line segment C1D1 and the line segment D1A1; and / or, When the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 2,3,3,3-tetrafluoropropene, in the component ternary phase diagram, there exist point A2(47.3, 7.9, 44.8), point B2(47.3, 22.3, 30.4), point C2(5.0, 49.3, 45.7) and point D2(5.0, 32.2, 62.8), and the coordinates (x, y, z) are located on the line segment A2B2(47.3, y, -0.993y + 52.6), on the line segment B2C2(x, -0.636x + 52.5, -0.362x + 47.5), on the line segment C2D2(5.0, y, -y + 95.0), on the line segment D2A2(x, -0.574x + 35.1, -0.426x + 64.9) or within the region enclosed by the line segments A2B2, the line segment B2C2, the line segment C2D2 and the line segment D2A2; and / or, When the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 1,1-difluoroethane, in the component ternary phase diagram, there exist point A3(45.9, 22.7, 31.4), point B3(46.5, 36.2, 17.3), point C3(5.0, 68.2, 26.8) and point D3(5.0, 50.4, 44.6), and the coordinates (x, y, z) are located on the line segment A3B3(x, -22.5x - 1010.1, -23.7x + 1117.8), on the line segment B3C3(x, -0.771x + 72.1, -0.229x + 27.9), on the line segment C3D3(5.0, y, -y + 95.0), on the line segment D3A3(x, -0.677x + 53.8, -0.320x + 46.2) or within the region enclosed by the line segments A3B3, the line segment B3C3, the line segment C3D3 and the line segment D3A3; and / or, When the first fluorohydrocarbon is trans-1,2-difluoroethylene and the second fluorohydrocarbon is 1,1,1,2-tetrafluoroethane, in the component ternary phase diagram, there exist point A4(24.9, 20.5, 54.6), point B4(34.4, 33.9, 31.7), point C4(5.0, 54.5, 40.5) and point D4(5.0, 32.1, 62.9), and the coordinates (x, y, z) are located on the line segment A4B4(x, 1.43x - 15.0, -2.44x + 115.3), on the line segment B4C4(x, -0.703x + 58.0, -0.300x + 42.0), on the line segment C4D4(5.0, y, -y + 95.0), on the line segment D4A4(x, -0.583x + 35.0, -0.417x + 65.0) or within the region enclosed by the line segments A4B4, the line segment B4C4, the line segment C4D4 and the line segment D4A4; and / or, When the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 3,3,3-trifluoropropene, in the component ternary phase diagram, there exist point A5(44.1, 15.0, 40.9), point B5(41.8, 26.0, 32.2), point C5(5.0, 46.5, 48.5) and point D5(5.0, 34.6, 60.4), and the coordinates (x, y, z) are located on the line segment A5B5(x, -4.78x + 225.9, 3.78x - 125.9), on the line segment B5C5(x, -0.557x + 49.3, -0.443x + 50.7), on the line segment C5D5(5.0, y, -y + 95.0), on the line segment D5A5(x, -0.501x + 37.1, -0.499x + 62.9) or within the region enclosed by the line segments A5B5, the line segment B5C5, the line segment C5D5 and the line segment D5A5; and / or, When the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 2,3,3,3-tetrafluoropropene, in the component ternary phase diagram, there exist point A6(46.1, 6.0, 47.9), point B6(43.7, 16.8, 39.5), point C6(5.0, 34.6, 60.4) and point D6(5.0, 22.4, 72.6), and the coordinates (x, y, z) are located on the line segment A6B6(x, -4.70x + 222.0, 3.65x - 120.1), on the line segment B6C6(x, -0.460x + 36.9, -0.540x + 63.1), on the line segment C6D6(5.0, y, -y + 95.0), on the line segment D6A6(x, -0.400x + 24.4, -0.602x + 75.6) or within the region enclosed by the line segments A6B6, the line segment B6C6, the line segment C6D6 and the line segment D6A6; and / or, When the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 1,1-difluoroethane, in the component ternary phase diagram, there are points A7(40.5, 24.7, 34.8), B7(37.8, 40.4, 21.8), C7(5.0, 65.6, 29.4) and D7(5.0, 49.4, 45.6), and the coordinates (x, y, z) are located on the line segment A7B7(x, -5.81x + 260.2, 4.81x - 160.2), on the line segment B7C7(x, -0.768x + 69.4, -0.232x + 30.6), on the line segment C7D7(5.0, y, -y + 95.0), on the line segment D7A7(x, -0.696x + 52.9, -0.304x + 47.1) or within the region enclosed by the line segments A7B7, B7C7, C7D7 and D7A7; and / or, When the first fluorohydrocarbon is difluoromethane and the second fluorohydrocarbon is 1,1,1,2-tetrafluoroethane, in the component ternary phase diagram, there are points A8(22.2, 19.7, 58.1), B8(27.7, 35.6, 36.7), C8(5.0, 51.4, 43.6) and D8(5.0, 29.2, 65.8), and the coordinates (x, y, z) are located on the line segment A8B8(x, 2.89x - 44.5, -3.89x + 144.5), on the line segment B8C8(x, -0.696x + 54.9, -0.304x + 45.1), on the line segment C8D8(5.0, y, -y + 95.0), on the line segment D8A8(x, -0.552x + 32.0, -0.448x + 68.0) or within the region enclosed by the line segments A8B8, B8C8, C8D8 and D8A8.

6. The heat transfer composition according to any one of claims 1 to 5, characterized in that, It further includes a third component, and the third component includes at least one of a third fluorohydrocarbon, a C1-C4 hydrocarbon, trifluoroiodomethane, and dimethyl ether, and the third fluorohydrocarbon includes at least one of fluorinated olefins other than trans-1,2-difluoroethylene, 3,3,3-trifluoropropene, and 2,3,3,3-tetrafluoropropene.

7. The heat transfer composition according to claim 6, wherein The third fluorohydrocarbon includes at least one of 1,1,2-trifluoroethylene, trans-1,3,3,3-tetrafluoropropene, and hexafluoropropene; and / or, The C1-C4 hydrocarbon includes at least one of propane and isobutane; and / or, The mass content of the third component in the heat transfer composition is 0.1-10%.

8. A method for preparing a heat transfer composition according to any one of claims 1 to 7, characterized in that, Comprising: Mixing the first component and the second component in a liquid phase state.

9. Use of the heat transfer composition according to any one of claims 1 to 7 in a heat exchange device, characterized in that, The heat transfer composition circulates as a heat transfer fluid in the heat exchange device; Preferably, the heat exchange device includes a household heat exchange device, a commercial heat exchange device, a heat exchange device for a heat pump system, a heat exchange device for refrigeration equipment, a heat exchange device for industrial refrigeration, a heat exchange device for an automobile, a heat exchange device for a data center, or a heat exchange device for mobile refrigeration equipment; and / or, the heat transfer composition is used as a heat transfer fluid to replace R22 or R410A and circulates in the heat exchange device.

10. A heat transfer method, characterized in that, Comprising: using the heat transfer composition according to any one of claims 1 to 7 as a heat transfer fluid in a heat exchange device; Preferably, the heat transfer composition is used as a heat transfer fluid to replace R22 or R410A in a heat exchange device.

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