CN113956850B - Environment-friendly mixed refrigerant, preparation method thereof and refrigeration system - Google Patents
Environment-friendly mixed refrigerant, preparation method thereof and refrigeration system Download PDFInfo
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- 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
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- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
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Abstract
The application relates to the technical field of refrigerants, in particular to an environment-friendly mixed refrigerant, a preparation method of the environment-friendly mixed refrigerant and a refrigeration system. The environment-friendly mixed refrigerant comprises a first component and a second component, wherein: the first component is monofluoromethane and the second component is one or two of 2, 3-tetrafluoropropene and trans-1, 3-tetrafluoropropene. The environment-friendly mixed refrigerant comprises 12-48% of a first component and 52-88% of a second component in percentage by mole. The components of the environment-friendly mixed refrigerant are mixed and stirred in a normal-temperature liquid-phase state to obtain the environment-friendly mixed refrigerant. The environment-friendly mixed refrigerant provided by the embodiment of the invention can better replace R134a refrigerant, on one hand, the environment-friendly and safety characteristics of the refrigerant are considered, on the basis that GWP is less than 150, the safety level is not lower than A2L, on the other hand, the high-temperature refrigeration and low-temperature heating performance is ensured, the energy efficiency is basically equivalent to that of R134a, the volume refrigeration/heating capacity is improved by more than 10 percent, and the maximum capacity can be improved by 121 percent.
Description
Technical Field
The application relates to the technical field of refrigerants, in particular to an environment-friendly mixed refrigerant, a preparation method of the environment-friendly mixed refrigerant and a refrigeration system.
Background
In order to cope with climate change, new energy automobiles are being developed vigorously in all countries in the world, but the problems of battery safety, battery service life, battery endurance and the like are also faced, and the whole automobile thermal management is a key technology for solving the problems. The heat pump air conditioner is a core component of the whole vehicle heat management, and the performance of the heat pump air conditioner is directly influenced by the refrigerant. Most countries have R134a (1, 2-tetrafluoroethane) as the refrigerant for vehicle air-conditioners, and the GWP (global warming potential) of the refrigerant is as high as 1300, so that the refrigerant is about to be replaced. At present, the use of GWP (global warming potential) is forbidden by passenger car air conditioners which are already determined by countries of European Union>150, the heat pump air conditioners of the enterprises in countries of the European Union have been switched to R744 (CO) under the regulation 2 ) And R1234yf (2, 3-tetrafluoropropene) refrigerant. The GWP of CO2 is 1, has good heat transfer characteristic, has been widely applied to the field of heat pump water heaters, but has lower critical temperature (304.13K), the operation under the refrigeration working condition is trans-critical circulation, the irreversible loss of the circulation is large, the refrigeration energy efficiency is generally low, and the running enterprises in the nineties of the last century are put into research and development of CO 2 Automobile air conditioner, but the problem of manufacturing under high temperature environment is not solved yetLow cold energy efficiency. The GWP of R1234yf is 1, the physical property of the R1234yf is similar to that of R134a of the existing vehicle air-conditioning refrigerant, and the R134a refrigerant can be directly replaced, so that the R1234yf has wide application in passenger vehicle air-conditioning of countries of European Union, but the R1234yf has high normal-pressure boiling point (243.67K), has low heating capacity and energy efficiency in a low-temperature environment, can meet the heating demand only in a PTC heating mode, and can greatly reduce the cruising ability of the battery.
Disclosure of Invention
In order to solve the technical problem of poor environmental performance of the R134a refrigerant in the prior art, a primary object of the present invention is to provide an environmental-friendly mixed refrigerant which has good environmental performance, has extremely low GWP, can give consideration to thermal performance, and can replace the R134a refrigerant.
In order to achieve the above object, according to a first aspect of the present invention, there is provided an environmentally friendly mixed refrigerant.
An environmentally friendly mixed refrigerant according to an embodiment of the present application, comprising a first component and a second component, wherein: the first component is monofluoromethane and the second component is one or both of 2, 3-tetrafluoropropene and trans-1, 3-tetrafluoropropene.
Further, the environment-friendly mixed refrigerant comprises 12-48% of a first component and 52% -88% of a second component in mole percentage.
Further, the environment-friendly mixed refrigerant comprises 16-36% of a first component and 64% -84% of a second component in mole percentage.
Further, the environment-friendly mixed refrigerant comprises 24% of a first component and 76% of a second component in molar percentage.
Further, the environment-friendly mixed refrigerant also comprises a third component, and the third component is difluoromethane.
Further, the environment-friendly mixed refrigerant comprises 4-44% of a first component, 24-80% of a second component and 4-52% of a third component in molar percentage.
Further, the environment-friendly mixed refrigerant comprises 16-32% of a first component, 44-80% of a second component and 4-24% of a third component in molar percentage.
Further, the environment-friendly mixed refrigerant comprises 34% of a first component, 52% of a second component and 24% of a third component in mole percentage.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a method for preparing an environmentally friendly mixed refrigerant, for preparing the environmentally friendly mixed refrigerant provided by the first aspect of the embodiments of the present invention, the method comprising the steps of: and mixing and stirring the components of the environment-friendly mixed refrigerant in a normal-temperature liquid-phase state to obtain the environment-friendly mixed refrigerant.
In order to achieve the above object, according to a third aspect of the present invention, there is also provided a refrigeration system, including a working medium, where the working medium includes the environmentally friendly mixed refrigerant provided by the first aspect of the embodiments of the present invention.
The environment-friendly mixed refrigerant provided by the embodiment of the invention can better replace an R134a refrigerant, on one hand, the environment-friendly and safety characteristics of the refrigerant are considered, on the basis that the GWP is less than 150, the safety level is not lower than A2L, on the other hand, the high-temperature refrigeration and low-temperature heating performance is ensured, the energy efficiency is basically equivalent to that of the R134a, the volume refrigeration/heating capacity is improved by more than 10 percent, and the maximum capacity can be improved by 121 percent.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this 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 explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
The preparation method of the environment-friendly mixed refrigerant provided by the embodiment of the invention is that the components of the environment-friendly mixed refrigerant are physically mixed into a multi-component mixture in a normal-temperature liquid-phase state according to the corresponding molar ratio, and the multi-component mixture can be mixed and stirred in the normal-temperature liquid-phase state to prepare the environment-friendly mixed refrigerant. The basic parameters of each component in the environment-friendly mixed refrigerant in the embodiment of the invention are shown in the table 1.
TABLE 1 basic parameters of each component substance in the environment-friendly mixed refrigerant
In order to make those skilled in the art better understand the technical solutions of the present application, the technical solutions will be clearly and completely described below in conjunction with the embodiments of the present application, and the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application. The present application will be described in detail below with reference to preferred embodiments. Specific examples and comparative examples are given below, in which the proportions of the components are all in mole percent, the sum of the mole percent of the constituent substances of each environment-friendly mixed refrigerant is 100%, and the constitutions of the specific examples and comparative examples are shown in Table 2.
Example 1
Uniformly and physically mixing monofluoromethane (R41) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 12 to 88 at a normal temperature and in a liquid phase to obtain a binary environment-friendly mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41) and 2, 3-tetrafluoropropene (R1234 yf) is 100%.
Example 2
Uniformly and physically mixing monofluoromethane (R41) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 32.
Example 3
Uniformly and physically mixing monofluoromethane (R41) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 48.
Example 4
Uniformly and physically mixing monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 16 to 84 at a normal temperature and a liquid phase to obtain a binary environment-friendly mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 5
Uniformly and physically mixing monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 36 to 64 at a normal temperature and a liquid phase to obtain a binary environment-friendly mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 6
Uniformly and physically mixing monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 48 to 52 at normal temperature and liquid phase to obtain a binary environment-friendly mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 7
Uniformly and physically mixing monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 12: the sum of the mole percentages of monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 8
Uniformly and physically mixing monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 24: the sum of the mole percentages of monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 9
Uniformly and physically mixing monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 36.
Example 10
Uniformly and physically mixing monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 48: the sum of the mole percentages of monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 11
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 4.
Example 12
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) according to the molar ratio of 24.
Example 13
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 32.
Example 14
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 44 to 36 at normal temperature under a liquid phase condition to obtain a ternary environment-friendly mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) is 100%.
Example 15
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) at a molar ratio of 4.
Example 16
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 16 to 80 at normal temperature under a liquid phase condition to obtain a ternary environment-friendly mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Example 17
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) at a molar ratio of 32.
Example 18
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) at a molar ratio of 44.
Comparative example 1
Uniformly and physically mixing monofluoromethane (R41) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 52 to 48 at a normal temperature and a liquid phase to obtain a binary mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41) and 2, 3-tetrafluoropropene (R1234 yf) is 100%.
Comparative example 2
Uniformly and physically mixing monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) at a molar ratio of 56 to 44 under a normal-temperature liquid phase condition to obtain a binary mixed refrigerant, wherein the sum of the molar percentages of monofluoromethane (R41) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) is 100%.
Comparative example 3
Monofluoromethane (R41), 2, 3-tetrafluoropropene (R1234 yf) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) were physically mixed uniformly at a molar ratio of 68.
Comparative example 4
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 60.
Comparative example 5
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and 2, 3-tetrafluoropropene (R1234 yf) according to a molar ratio of 40.
Comparative example 6
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) according to a molar ratio of 60.
Comparative example 7
Uniformly and physically mixing monofluoromethane (R41), difluoromethane (R32) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) at a molar ratio of 40.
TABLE 2 composition of ingredients of each example and comparative example
| Refrigerant | Component one | Component two | Component III | Molar weight ratio |
| Example 1 | R41 | R1234yf | - | 0.12/0.88 |
| Example 2 | R41 | R1234yf | - | 0.32/0.68 |
| Example 3 | R41 | R1234yf | - | 0.48/0.52 |
| Example 4 | R41 | R1234ze(E) | - | 0.16/0.84 |
| Example 5 | R41 | R1234ze(E) | - | 0.36/0.64 |
| Example 6 | R41 | R1234ze(E) | - | 0.48/0.52 |
| Example 7 | R41 | R1234yf | R1234ze(E) | 0.12/0.48/0.40 |
| Example 8 | R41 | R1234yf | R1234ze(E) | 0.24/0.28/0.48 |
| Example 9 | R41 | R1234yf | R1234ze(E) | 0.36/0.36/0.28 |
| Example 10 | R41 | R1234yf | R1234ze(E) | 0.48/0.28/0.24 |
| Example 11 | R41 | R32 | R1234yf | 0.04/0.36/0.60 |
| Example 12 | R41 | R32 | R1234yf | 0.24/0.52/0.24 |
| Example 13 | R41 | R32 | R1234yf | 0.32/0.24/0.44 |
| Example 14 | R41 | R32 | R1234yf | 0.44/0.20/0.36 |
| Example 15 | R41 | R32 | R1234ze(E) | 0.04/0.36/0.60 |
| Example 16 | R41 | R32 | R1234ze(E) | 0.16/0.04/0.80 |
| Example 17 | R41 | R32 | R1234ze(E) | 0.32/0.16/0.52 |
| Example 18 | R41 | R32 | R1234ze(E) | 0.44/0.16/0.40 |
| Comparative example 1 | R41 | R1234yf | - | 0.52/0.48 |
| Comparative example 2 | R41 | R1234ze(E) | - | 0.56/0.44 |
| Comparative example 3 | R41 | R1234yf | R1234ze(E) | 0.68/0.04/0.28 |
| Comparative example 4 | R41 | R32 | R1234yf | 0.60/0.08/0.32 |
| Comparative example 5 | R41 | R32 | R1234yf | 0.40/0.40/0.20 |
| Comparative example 6 | R41 | R32 | R1234ze(E) | 0.60/0.08/0.32 |
| Comparative example 7 | R41 | R32 | R1234ze(E) | 0.40/0.40/0.20 |
In order to compare the effects of the examples and the comparative examples, the design conditions selected are specifically: the evaporator evaporation temperature (the arithmetic mean of the evaporator inlet temperature and the dew point temperature under the corresponding pressure) is 283.15K, the condenser condensation temperature (the arithmetic mean of the dew point and the bubble point temperature in the condenser) is 313.15K, the gas phase at the evaporator outlet is in an overheated state, the superheat degree is 5K, the liquid phase at the condenser outlet is in a supercooled state, the supercooling degree is 5K, and the adiabatic efficiency of the compressor is 0.75. The above-described examples 1 to 18, comparative examples 1 to 7, R1234yf refrigerants and CO were used respectively 2 The cycle performance parameters of the refrigerant and the R134a refrigerant in the refrigeration system were tested and calculated, and the indexes of critical temperature, GWP value, relative unit volume refrigeration/heating capacity Qv (ratio to unit volume refrigeration/heating capacity of the R134a refrigerant), relative coefficient of performance COP (ratio to coefficient of performance of the R134a refrigerant), boiling point, safety class, and the like were compared and recorded in table 3.
Table 3 examples, comparative examples, R134a, R1234yf and CO 2 Experimental data of (2)
As can be seen from Table 3, the GWP values of the refrigerants obtained in the embodiments of the invention are all less than 150, and the refrigerants have better environmental protection characteristics; the safety level of the refrigerant obtained by each embodiment of the invention is A2L, and the safety performance is excellent; the relative performance coefficients of the refrigerants obtained by the embodiments of the invention are not lower than 0.9, which are basically equivalent to R134a, the relative volume refrigerating/heating capacities are not lower than 1.1, and the maximum relative volume refrigerating/heating capacity is 2.21 times of R134 a; the refrigerant obtained by the embodiments of the invention has higher refrigerating/heating capacity than R1234yf refrigerant, and has higher CO refrigerating/heating capacity than CO 2 The refrigerant has higher refrigeration energy efficiency compared with the refrigerant.If a certain component in the refrigerant provided by the embodiment of the invention is not in the molar ratio provided by the application, for example, the molar ratio of R41 in the refrigerants obtained by the comparative examples 1,2, 3, 4 and 6 exceeds 48 percent, the safety grades of the components are all low, and the components are all in A2 class, and the application of the refrigerant in the vehicle air conditioner needs to use a secondary loop system; wherein the performance coefficients of the refrigerants obtained in comparative example 3, comparative example 4 and comparative example 6 are lower than 90% of that of R134 a; comparative example 5 and comparative example 7 obtained refrigerants in which the molar fraction of R32 exceeds 36%, their GWP values are both higher than 150, and the coefficient of performance of the refrigerant obtained in comparative example 7 was lower than 90% of R134 a. The refrigerant provided by the embodiment of the invention has the normal pressure bubble point temperature between 67.3 ℃ below zero and 43 ℃ below zero, the normal pressure dew point temperature between 45.8 ℃ below zero and 22.9 ℃ below zero, the refrigerant in the comparative example has the normal pressure bubble point temperature between 71.9 ℃ below zero and 65.8 ℃ below zero, and the normal pressure dew point temperature between 49.3 ℃ below zero and 35.8 ℃, belongs to a low-temperature refrigerant.
Therefore, the environment-friendly mixed refrigerant provided by the invention not only has the environment-friendly characteristic of low GWP, but also has excellent safety performance, the energy efficiency is basically equivalent to that of R134a, the volume refrigeration/heating is greatly improved, and the environment-friendly mixed refrigerant can be better applied to automobile air conditioners.
The current new energy automobile alternative refrigerant needs to have the following characteristics: good environmental protection property, GWP<150; for direct cooling systems, the safety rating of the refrigerant is not lower than A2L, and the safety rating is classified according to ASHRAE 34-2019 and is classified into a (low toxicity), B (high toxicity), 1 (no flame spread), 2L (micro-combustion), 2 (combustible) and 3 (combustible); can stably operate in a wide temperature range of-35 to 50 ℃, has good thermodynamic property, and has better high-temperature refrigeration energy efficiency than CO 2 And the low-temperature heating capacity is better than that of R134a or R1234yf. The refrigerant provided by the patent is prepared by mixing a plurality of components in R41 (monofluoromethane), R32 (difluoromethane), R1234yf (2,3,3,3-tetrafluoropropene), R1234ze (E) (trans-1,3,3,3-tetrafluoropropene)The mixed refrigerant is suitable for new energy vehicles, and can meet the requirement of replacing the refrigerant by the new energy vehicles.
The embodiment of the invention also correspondingly protects a refrigeration system using the environment-friendly mixed refrigerant provided by the embodiment of the invention as a working medium, the refrigeration system can be applied to electric appliances including but not limited to air conditioners, refrigerators, dehumidifiers and the like, and other components and working principles of the refrigeration system are applicable to the prior art and are not described herein again.
Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. 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 invention. Thus, the present invention 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 (8)
1. An environment-friendly mixed refrigerant for replacing R134a, which is characterized by consisting of 12-48% of a first component and 52-88% of a second component in mol percentage, wherein: the first component is monofluoromethane and the second component is 2, 3-tetrafluoropropene and trans-1, 3-tetrafluoropropene.
2. The environmentally friendly mixed refrigerant for replacing R134a as claimed in claim 1, wherein the refrigerant consists of 16-36% of the first component and 64% -84% of the second component in mol%.
3. The environmentally friendly mixed refrigerant for replacing R134a of claim 1, consisting of 24% of the first component and 76% of the second component in mole percent.
4. An environment-friendly mixed refrigerant for replacing R134a, which is characterized by consisting of 4-44% of a first component, 24-80% of a second component and 4-52% of a third component in mol percentage, wherein: the first component is monofluoromethane, the second component is 2, 3-tetrafluoropropene or trans-1, 3-tetrafluoropropene, and the third component is difluoromethane.
5. The environmentally friendly mixed refrigerant for replacing R134a as claimed in claim 4, which is composed of 16-32% of the first component, 44-80% of the second component and 4-24% of the third component in mol percentage.
6. The environmentally friendly mixed refrigerant as recited in claim 4, wherein the refrigerant consists of 34% of the first component, 52% of the second component and 24% of the third component in mole percentage.
7. A method for preparing the environmentally friendly mixed refrigerant according to any one of claims 1 to 6, comprising the steps of: and mixing and stirring the components of the environment-friendly mixed refrigerant in a normal-temperature liquid-phase state to obtain the environment-friendly mixed refrigerant.
8. A refrigeration system, characterized in that the refrigeration system comprises a working medium, wherein,
the working fluid comprises the environment-friendly mixed refrigerant as set forth in any one of claims 1 to 6.
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| GB0906547D0 (en) * | 2009-04-16 | 2009-05-20 | Ineos Fluor Holdings Ltd | Heat transfer compositions |
| US8808570B2 (en) * | 2010-05-20 | 2014-08-19 | Mexichem Amanco Holding S.A. De C.V. | Heat transfer compositions |
| CN102660229B (en) * | 2012-04-26 | 2014-05-07 | 中科赛凌（北京）科技有限公司 | Incombustible mixed refrigerant suitable for copious cooling temperature of 90-140DEG C below zero |
| CN106147716B (en) * | 2015-04-01 | 2022-02-18 | 浙江蓝天环保高科技股份有限公司 | Environment-friendly refrigeration composition |
| CN110513926A (en) * | 2019-09-05 | 2019-11-29 | 天津商业大学 | Twin-stage throttling non-azeotropic working medium mechanical super cooling CO2Trans-critical cycle cooling cycle system |
| CN110500824A (en) * | 2019-09-05 | 2019-11-26 | 天津商业大学 | A kind of non-azeotropic working medium supercharging mechanical supercooling CO2Transcritical cooling system |
| CN211060438U (en) * | 2019-10-29 | 2020-07-21 | 中机国能炼化工程有限公司 | Parallel compression machinery supercooling double-condenser combined supply system |
| CN211041462U (en) * | 2019-10-29 | 2020-07-17 | 中机国能炼化工程有限公司 | Waste heat recovery trans-critical CO of gas cooler2Refrigeration system |
| CN113563846B (en) * | 2021-07-19 | 2022-06-14 | 珠海格力电器股份有限公司 | Refrigerant and preparation method thereof, stepped cooling and dehumidifying system and electrical equipment |
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