CN115160990B - Environment-friendly energy-saving composition, preparation method, application and refrigeration system thereof - Google Patents

Environment-friendly energy-saving composition, preparation method, application and refrigeration system thereof Download PDF

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CN115160990B
CN115160990B CN202210918319.7A CN202210918319A CN115160990B CN 115160990 B CN115160990 B CN 115160990B CN 202210918319 A CN202210918319 A CN 202210918319A CN 115160990 B CN115160990 B CN 115160990B
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friendly
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saving
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CN115160990A (en
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徐璐
梁祥飞
皇甫启捷
黄泽清
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C09K2205/122—Halogenated hydrocarbons
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • Organic Chemistry (AREA)
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  • Sustainable Development (AREA)
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Abstract

The application relates to the technical field of refrigerants, in particular to an environment-friendly and energy-saving composition, a preparation method of the environment-friendly and energy-saving composition, application of the environment-friendly and energy-saving composition and a refrigerating system. An eco-friendly composition comprising a first component and a second component, the first component being a monofluoromethane and the second component being at least one member selected from the group consisting of propylene and propane, the eco-friendly composition having a GWP value of less than 100. The environment-friendly energy-saving composition provided by the application not only has the environment-friendly characteristic of low GWP, but also has better refrigerating capacity per unit volume and system performance coefficient compared with R134a, and is a refrigerant alternative scheme with low GWP and high system performance.

Description

Environment-friendly energy-saving composition, preparation method, application and refrigeration system thereof
Technical Field
The application relates to the technical field of refrigerants, in particular to an environment-friendly and energy-saving composition, a preparation method of the environment-friendly and energy-saving composition, application of the environment-friendly and energy-saving composition and a refrigerating system.
Background
As global warming becomes increasingly environmentally responsible, the kefir revision sets forth a series of requirements to cut and eliminate the high GWP refrigerants currently in use, and the existing mainstream refrigerants will be phased out due to the higher GWP values. Based on this, various regulations and draft are proposed in various countries to regulate HFCs refrigerants, for example, british regulations for domestic refrigerators and freezers and for refrigerant in sealed systems require GWP <150 and for limited control times, and it is clear that passenger car air conditioners are prohibited from using refrigerant having GWP >150 in various countries in the european union. Strict ecological environmental protection regulations are also practiced in China and various policies and plans are proposed in order to achieve the aim of carbon neutralization in 2060. Therefore, there is an urgent need to develop a refrigerant having both low GWP and high system energy efficiency to replace the high GWP refrigerant used.
1, 2-tetrafluoroethane (R134 a) is widely used in the fields of automobile air conditioners and other refrigeration systems due to the characteristics of no toxicity, incombustibility, no corrosion, good material compatibility and the like, but with the further enhancement of the management and control of refrigerants with high Global Warming Potential (GWP) at home and abroad, HFCs refrigerants such as R134a are subjected to reduction and elimination, so that it is necessary to find a refrigerant with good environmental protection performance, and the system performance is superior to that of R134a for substitution, so that the requirements of the environment protection performance and the high efficiency of the refrigerant are met to the greatest extent.
Disclosure of Invention
In order to solve the technical problem of poor environmental protection performance caused by using a refrigerant (such as R134a and the like) in the prior art, the primary purpose of the application is to provide an environmental protection and energy saving composition, form a substitute refrigerant with lower GWP and better thermodynamic performance than R134a, and provide a preparation method of the composition and a refrigerating system using the composition.
In order to achieve the above object, according to a first aspect of the present application, there is provided an environment-friendly and energy-saving composition.
According to an embodiment of the application, the environment-friendly energy-saving composition comprises a first component and a second component, wherein the first component is monofluoromethane, the second component is at least one of propylene and propane, and the GWP value of the environment-friendly energy-saving composition is less than 100.
Further, the environment-friendly and energy-saving composition comprises 5-40% of monofluoromethane and 60-95% of propylene in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 10-25% of monofluoromethane and 75-90% of propylene in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 15% of monofluoromethane and 85% of propylene in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 10% -40% of monofluoromethane and 60% -90% of propane in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 10% -25% of monofluoromethane and 75% -90% of propane in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 15% of monofluoromethane and 85% of propane in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 20-70% of monofluoromethane, 5-75% of propylene and 5-65% of propane in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 20-70% of monofluoromethane, 10-75% of propylene and 5-20% of propane in percentage by mass.
Further, the environment-friendly and energy-saving composition comprises 65% of monofluoromethane, 15% of propylene and 20% of propane in percentage by mass.
In order to achieve the above object, according to a second aspect of the present application, there is also provided a method for preparing an environment-friendly and energy-saving composition, for preparing the environment-friendly and energy-saving composition provided in the first aspect of the embodiment of the present application, the method comprising the steps of: and mixing and stirring the components of the environment-friendly energy-saving composition in a normal temperature and normal pressure liquid phase state to obtain the environment-friendly energy-saving composition.
In order to achieve the above object, according to a third aspect of the present application, the present application also discloses the use of the environment-friendly and energy-saving composition as a refrigerant for a refrigeration system.
In order to achieve the above object, according to a fourth aspect of the present application, there is further provided a refrigeration system, which includes a working medium, where the working medium includes the composition for environmental protection and energy saving provided in the first aspect of the present application.
The environment-friendly energy-saving composition provided by the application not only has the environment-friendly characteristic of low GWP, but also has better refrigerating capacity per unit volume and system performance coefficient compared with R134a, and is a refrigerant alternative scheme with low GWP and high system performance.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "comprising" and "having," and any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements expressly listed but may include other elements not expressly listed or inherent to such article or apparatus. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The environment-friendly and energy-saving composition provided by the embodiment of the application is prepared by physically mixing the components of the environment-friendly and energy-saving composition, namely, the monofluoromethane (R41), the propylene (R1270) and the propane (R290), according to the corresponding mass ratio under the normal temperature and normal pressure liquid phase state to form a multi-component mixture, and particularly can be mixed and stirred under the room temperature and normal pressure liquid phase state to prepare the environment-friendly and energy-saving composition. The basic parameters of the constituent materials in the environmental friendly energy-saving composition in the examples of the present application are shown in Table 1.
TABLE 1 basic parameters of the component substances in Environment-friendly energy-saving compositions
The environment-friendly and energy-saving composition comprises a first component and a second component, wherein the first component is monofluoromethane, the second component is at least one of propylene and propane, and the GWP value of the environment-friendly and energy-saving composition is less than 100.
When the second component is propylene, the environment-friendly and energy-saving composition comprises 5-40% of monofluoromethane and 60-95% of propylene in percentage by mass. Preferably, the environmentally friendly and energy-saving composition comprises 10% -25% of monofluoromethane and 75% -90% of propylene. More preferably, the eco-friendly composition comprises 15% of monofluoromethane and 85% of propylene.
When the second component is propane, the environment-friendly and energy-saving composition comprises 10-40% of monofluoromethane and 60-90% of propane in percentage by mass. Preferably, the eco-friendly composition comprises 10% -25% of monofluoromethane and 75% -90% of propane. More preferably, the eco-friendly composition comprises 15% of monofluoromethane and 85% of propane.
When the second component is selected from propylene and propane, the environment-friendly and energy-saving composition comprises 20-70% of monofluoromethane, 5-75% of propylene and 5-65% of propane in percentage by mass. Preferably, the environmentally friendly and energy saving composition comprises 20% -70% of monofluoromethane, 10% -75% of propylene and 5% -20% of propane. More preferably, the eco-friendly composition comprises 65% of monofluoromethane, 15% of propylene and 20% of propane.
The composition with the proportion can balance the property characteristics of the components, so that the obtained composition has good environmental protection property and GWP of less than 100; the composition provided by the application has good thermal performance, uses the refrigerant R134a (GWP=1530 (AR 6)) widely used at present as a comparison working medium, has large refrigerating capacity per unit volume, small system compression ratio and high system EER, and has the effects of energy conservation, efficiency improvement and emission reduction.
In order that the manner in which the application may be better understood, a more complete description of the application will be rendered by reference to embodiments thereof which are illustrated in the appended drawings and which are intended to represent only some, but not all, of the embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application. The application will be described in detail with reference to preferred embodiments. A plurality of specific examples and comparative examples are given below, wherein the proportions of the components are mass percentages, and the sum of the mass percentages of the constituent materials of each of the eco-friendly composition is 100%, and the specific examples and comparative examples are constituted as shown in Table 2.
Example 1
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 5:95 under the normal temperature and pressure liquid phase.
Example 2
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 10:90 at normal temperature and normal pressure under the liquid phase.
Example 3
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 15:85 under the normal temperature and pressure liquid phase.
Example 4
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 20:80 under the normal temperature and pressure liquid phase.
Example 5
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 25:75 under the normal temperature and pressure liquid phase.
Example 6
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 30:70 at normal temperature and normal pressure under liquid phase.
Example 7
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 35:65 under the normal temperature and pressure liquid phase.
Example 8
The environmental-friendly energy-saving composition is prepared by uniformly physically mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 40:60 under the normal temperature and pressure liquid phase.
Example 9
The environmental protection and energy saving composition is obtained by physically mixing the monofluoromethane (R41) and the propane (R290) according to the mass ratio of 10:90 under the normal temperature and pressure liquid phase.
Example 10
The method comprises the steps of physically and uniformly mixing the monofluoromethane (R41) and the propane (R290) according to the mass ratio of 15:85 under normal temperature and normal pressure liquid phase to obtain the environment-friendly energy-saving composition.
Example 11
The method comprises the steps of physically and uniformly mixing the monofluoromethane (R41) and the propane (R290) according to the mass ratio of 20:80 at normal temperature and normal pressure to obtain the environment-friendly energy-saving composition.
Example 12
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propane (R290) according to the mass ratio of 25:75 at normal temperature and normal pressure under the liquid phase.
Example 13
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propane (R290) according to the mass ratio of 30:70 at normal temperature and normal pressure under the liquid phase.
Example 14
The method comprises the steps of mixing the monofluoromethane (R41) and the propane (R290) according to a mass ratio of 35:65 at normal temperature and normal pressure under liquid phase, and obtaining the environment-friendly energy-saving composition.
Example 15
The environmental-friendly energy-saving composition is prepared by physically mixing the monofluoromethane (R41) and the propane (R290) according to the mass ratio of 40:60 at normal temperature and normal pressure under the liquid phase.
Example 16
The method comprises the steps of mixing methyl fluoride (R41), propylene (R1270) and propane (R290) according to a mass ratio of 20:75:5, and carrying out physical mixing at normal temperature and normal pressure under liquid phase to obtain the environment-friendly energy-saving composition.
Example 17
The method comprises the steps of mixing methyl fluoride (R41), propylene (R1270) and propane (R290) according to a mass ratio of 30:5:65, and carrying out physical mixing under normal temperature and normal pressure liquid phase to obtain the environment-friendly energy-saving composition.
Example 18
The method comprises the steps of mixing methyl fluoride (R41), propylene (R1270) and propane (R290) according to a mass ratio of 65:15:20, and carrying out physical mixing under normal temperature and normal pressure liquid phase to obtain the environment-friendly energy-saving composition.
Example 19
The method comprises the steps of mixing methyl fluoride (R41), propylene (R1270) and propane (R290) according to a mass ratio of 70:10:20, and carrying out physical mixing at normal temperature and normal pressure under liquid phase to obtain an environment-friendly energy-saving composition.
Comparative example 1
The method comprises the steps of physically and uniformly mixing the monofluoromethane (R41) and the propylene (R1270) according to a mass ratio of 70:30 at normal temperature and normal pressure under liquid phase to obtain a composition.
Comparative example 2
The method comprises the steps of physically and uniformly mixing the monofluoromethane (R41) and the propylene (R1270) according to the mass ratio of 95:5 under normal temperature and normal pressure liquid phase to obtain a composition.
Comparative example 3
The method comprises the steps of mixing methyl fluoride (R41) and propane (R290) according to a mass ratio of 60:40 at normal temperature and normal pressure under liquid phase to obtain a composition.
Comparative example 4
The method comprises the steps of mixing the monofluoromethane (R41) and the propane (R290) according to a mass ratio of 95:5 at normal temperature and normal pressure under liquid phase to obtain a composition.
Comparative example 5
The method comprises the steps of physically and uniformly mixing methyl fluoride (R41), propylene (R1270) and propane (R290) according to a mass ratio of 80:10:10 under normal temperature and normal pressure liquid phase to obtain a composition.
Comparative example 6
The method comprises the steps of physically and uniformly mixing methyl fluoride (R41), propylene (R1270) and propane (R290) according to a mass ratio of 90:5:5 at normal temperature and normal pressure to obtain a composition.
Table 2 composition of ingredients of examples and comparative examples
Composition and method for producing the same Monofluoromethane Propylene Propane Mass ratio
Example 1 5 95 - 5:95
Example 2 10 90 - 10:90
Example 3 15 85 - 15:85
Example 4 20 80 - 20:80
Example 5 25 75 - 25:75
Example 6 30 70 - 30:70
Example 7 35 65 - 35:65
Example 8 40 60 - 40:60
Example 9 10 - 90 10:90
Example 10 15 - 85 15:85
Example 11 20 - 80 20:80
Example 12 25 - 75 25:75
Example 13 30 - 70 30:70
Example 14 35 - 65 35:65
Example 15 40 - 60 40:60
Example 16 20 75 5 20:75:5
Example 17 30 5 65 30:5:65
Example 18 65 15 20 65:15:20
Example 19 70 10 20 70:10:20
Comparative example 1 70 30 - 70:30
Comparative example 2 95 5 - 95:5
Comparative example 3 60 - 40 60:40
Comparative example 4 95 - 5 95:5
Comparative example 5 80 10 10 80:10:10
Comparative example 6 90 5 5 90:5:5
Embodiments of the present application protect the use of an environmentally friendly energy-saving composition as a refrigerant for a refrigeration system. The environment-friendly and energy-saving composition provided by the embodiments of the application can be used as a refrigerant in a refrigeration device, the refrigeration device comprises a compressor, a condenser, an evaporator and an expansion device as main components, and a heat transfer fluid working medium in a refrigeration device system is the composition obtained in the embodiment or the comparative example. The evaporator and condenser are heat exchangers, and any type of heat exchanger, preferably a heat exchanger with a countercurrent tendency, may be used in the present application.
The basic parameters of the molecular weights, normal boiling points, critical temperatures, critical pressures, environmental properties, slip temperatures, etc. of examples 1 to 19, comparative examples 1 to 6 and R134a according to the present application are shown in Table 3.
TABLE 3 basic parameters of examples, comparative examples and R134a
( * And (3) injection: slip temperature is the difference between dew point temperature and bubble point temperature at operating pressure )
As can be seen from Table 3, the compositions provided by examples 1-19 of the present application provide significantly better environmental performance than R134a, and all examples have GWP of less than 100. The irreversible loss in the heat exchange process can be reduced by utilizing the sliding temperature of the composition, so that the aim of improving the energy efficiency is fulfilled. The mass ratio of each component in comparative examples 1 to 6 was not in the range provided in the inventive examples, the temperature glide of the obtained refrigerant was smaller than in the examples under the same components, and the GWP of part of the comparative examples was more than 100.
In order to compare the performance effects of the system used as a refrigerant for each of the examples and comparative examples, the design refrigeration conditions were selected to be specifically: the inlet and outlet temperatures of the evaporator side heat exchange fluid were 27 ℃ and 14.5 ℃ respectively, the inlet and outlet temperatures of the condenser side heat exchange fluid were 14.5 ℃ and 41 ℃ respectively, the logarithmic average Wen Chafen of the evaporator and condenser was 11 ℃ and 10 ℃ respectively, the refrigerant at the outlet of the evaporator was in a superheated state, the degree of superheat was 1 ℃, the refrigerant at the outlet of the condenser was in a supercooled state, the outlet temperature was 18 ℃, and the adiabatic efficiency of the compressor was 0.7. The performance parameters of the circulation of the refrigerants of examples 1 to 19, comparative examples 1 to 6 and R134a in the refrigeration system under the above conditions were respectively tested and calculated to obtain the indexes such as the discharge temperature, the compression ratio, the relative unit volume refrigeration capacity Qv (unit volume refrigeration capacity ratio with R134 a) and the EER lifting amplitude (compared with R134 a), and the like, and the indexes are recorded in Table 4.
As can be seen from Table 4, the compositions provided by the various embodiments of the present application provide superior thermal performance to R134a refrigerant, and higher refrigeration per unit volume than R134a, thus allowing for the option of smaller displacement compressors under the same requirements, thereby reducing compressor volume. The composition of the embodiments of the application can obviously reduce the compression ratio of a compressor compared with R134a refrigerant, and the compression ratio in the embodiments of the application is 1.90-2.14, and is reduced by 22% -31% compared with R134a refrigerant. The energy efficiency of the composition system can be improved by 11% -17% compared with R134a by adopting the composition in each embodiment of the application and matching with proper heat exchanger flow path configuration. The comparative examples 1-6, which have lower EER enhancement than the examples of the same composition, demonstrate that the properties of the materials are well balanced with the heat transfer of the fluid inside and outside the heat exchanger, and the resulting refrigerant compositions are ideal in all respects, only when the mass fraction of the materials and the composition of the materials are the same in the present application.
As can be seen from the data in tables 3 and 4, the embodiments of the present application fully consider the properties of each component in the composition, and define the mass ratio range of each component, so as to ensure that the environment-friendly and energy-saving composition has a GWP of less than 100 and simultaneously greatly improve the energy efficiency of the system.
In summary, the environment-friendly and energy-saving composition provided by the embodiments of the application not only has the environment-friendly characteristic of low GWP, but also obviously improves the system performance compared with R134a, and is a refrigerant alternative scheme with low GWP and high system performance. .
Table 4 system performance test data for each of the examples, comparative examples, and R134a refrigerant
The embodiment of the application also correspondingly protects a refrigerating system using the environment-friendly energy-saving composition provided by the embodiment of the application as a working medium, and the refrigerating system can be applied to electrical equipment including but not limited to an air conditioner, a refrigerator, a dehumidifier and the like, and other components and working principles of the refrigerating system are applicable to the prior art and are not repeated here.
In this specification, some embodiments are described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are enough to refer to each other.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. The environment-friendly energy-saving composition is characterized by comprising 5-40% of monofluoromethane and 60-95% of propylene in percentage by mass, wherein the GWP value of the environment-friendly energy-saving composition is less than 100.
2. The environment-friendly and energy-saving composition according to claim 1, which consists of 10-25% of monofluoromethane and 75-90% of propylene in percentage by mass.
3. The environment-friendly energy-saving composition according to claim 1, wherein the composition comprises 15% of monofluoromethane and 85% of propylene in percentage by mass.
4. The environment-friendly energy-saving composition is characterized by comprising 10-40% of monofluoromethane and 60-90% of propane in percentage by mass, wherein the GWP value of the environment-friendly energy-saving composition is less than 100.
5. The environment-friendly energy-saving composition according to claim 4, which consists of 10-25% of monofluoromethane and 75-90% of propane in percentage by mass.
6. The environment-friendly energy-saving composition according to claim 4, which consists of 15% of monofluoromethane and 85% of propane in mass percent.
7. The environment-friendly energy-saving composition is characterized by comprising 20-70% of monofluoromethane, 5-75% of propylene and 5-65% of propane in percentage by mass, wherein the GWP value of the environment-friendly energy-saving composition is less than 100.
8. The environment-friendly and energy-saving composition according to claim 7, wherein the composition comprises 20-70% of monofluoromethane, 10-75% of propylene and 5-20% of propane in percentage by mass.
9. The environment-friendly energy-saving composition according to claim 7, wherein the composition comprises 65% of monofluoromethane, 15% of propylene and 20% of propane in percentage by mass.
10. A method of preparing the eco-friendly energy-saving composition according to any one of claims 1 to 9, characterized in that the method comprises the steps of: and mixing and stirring the components of the environment-friendly energy-saving composition in a normal temperature and normal pressure liquid phase state to obtain the environment-friendly energy-saving composition.
11. Use of the eco-friendly composition of any one of claims 1 to 9 as a refrigerant for a refrigeration system.
12. A refrigeration system comprising a working fluid, wherein the working fluid comprises the eco-friendly composition of any one of claims 1 to 9.
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