Mixed refrigerant and air conditioning system

Abstract

The invention provides a mixed refrigerant and an air conditioning system, the mixed refrigerant is composed of a first component, a second component and a third component, the first component is 3, 3, 3-trifluoropropyne, the second component is fluoromethane, and the third component is one or more of fluoroethane, propylene and dimethyl ether. According to the mixed refrigerant, on the premise that safety and system performance are guaranteed, emission of greenhouse gas can be reduced, the problem that the GWP of other refrigerants is too high is effectively solved, meanwhile, the problem that the thermal performance of other refrigerants is poor is solved, the relative volume refrigerating capacity is improved while the GWP is reduced, and the service life of the refrigerant is prolonged. And the refrigerating / heating performance is improved (namely, the thermal performance is improved).

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of refrigeration, and particularly relates to a mixed refrigerant and an air conditioning system. BACKGROUND

[0002] Since the first vapor compression machine was invented in 1830, refrigerants have mainly experienced four generations of technological development. The first generation of refrigerants takes normal work as the selection standard, and mainly includes easily available substances such as ammonia, carbon dioxide, sulfur dioxide and diethyl ether. The second generation of refrigerants takes safety and stability as the standard, and mainly includes artificially synthesized fluorochlorohydrocarbon (CFC) and hydrofluorochlorohydrocarbon (HCFC) substances. The third generation of refrigerants takes the non-destruction of the ozone layer as the standard, and mainly includes hydrofluorocarbon (HFC) substances. With global warming, the fourth generation of refrigerants takes zero ozone depletion potential (ODP) and low greenhouse effect potential (GWP) as the standard, and mainly includes hydrofluoroalkene (HFO) substances and natural working substances. However, there is still no perfect working substance that can simultaneously meet the requirements of environmental protection, safety and performance. R134a, as a refrigerant widely used in automobile air conditioning systems, has a global warming potential (GWP) as high as 1300. Therefore, it is urgent to find an environmentally friendly and sustainable alternative refrigerant to gradually replace R134a. The unit volume refrigeration capacity (Qv) of the refrigerant largely determines the size of the equipment, and the higher the Qv, the more compact the system.

[0003] Due to the technical problems that the refrigerant in the prior art cannot simultaneously ensure low GWP value and high thermodynamic performance (including COP and volumetric refrigeration capacity), the present application designs a mixed refrigerant and an air conditioning system. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defects that the refrigerant in the prior art cannot simultaneously ensure low GWP value and high thermodynamic performance, and to provide a mixed refrigerant and an air conditioning system.

[0005] The present application provides a mixed refrigerant, wherein: The mixed refrigerant is composed of a first component, a second component and a third component, wherein the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is one or more of fluoroethane, propylene and dimethyl ether.

[0006] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is fluoromethane, the 3,3,3-trifluoropropynyl accounts for 4-92% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, and the fluoromethane accounts for 4-92% by mass of the mixed refrigerant.

[0007] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is dimethyl ether, the 3,3,3-trifluoropropynyl accounts for 4-88% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-12% by mass of the mixed refrigerant, and the dimethyl ether accounts for 8-84% by mass of the mixed refrigerant.

[0008] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is propylene, the 3,3,3-trifluoropropynyl accounts for 4-92% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, and the propylene accounts for 4-92% by mass of the mixed refrigerant.

[0009] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is fluoromethane, the 3,3,3-trifluoropropynyl accounts for 4-92% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, and the fluoromethane accounts for 4-92% by mass of the mixed refrigerant.

[0010] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is fluoromethane, the 3,3,3-trifluoropropynyl accounts for 4-92% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, and the fluoromethane accounts for 4-92% by mass of the mixed refrigerant.

[0011] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is dimethyl ether and propylene, the 3,3,3-trifluoropropynyl accounts for 4-80% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, the dimethyl ether accounts for 4-80% by mass of the mixed refrigerant, and the propylene accounts for 8-76% by mass of the mixed refrigerant.

[0012] In some embodiments, When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is dimethyl ether and propylene, the 3,3,3-trifluoropropynyl accounts for 4-80% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, the dimethyl ether accounts for 4-80% by mass of the mixed refrigerant, and the propylene accounts for 8-76% by mass of the mixed refrigerant.

[0013] In some embodiments, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.56:0.04:0.4; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.88:0.04:0.08; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.16:0.08:0.76; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.04:0.12:0.84.

[0014] In some embodiments, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.56:0.04:0.4; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.88:0.04:0.08; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.16:0.08:0.76; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.04:0.12:0.84.

[0015] In some embodiments, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or,

[0016] In some embodiments, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or,

[0017] In some embodiments, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or,

[0018] In some embodiments, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, the 3,3,3-trifluoropropynol, the monofluoromethane, the fluorinated ethane, and the dimethyl ether are in a mass ratio of 0.04:0.04:0.04:0.88; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, the dimethyl ether and the propylene is 0.8:0.04:0.04:0.12.

[0019] In some embodiments, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, the dimethyl ether and the propylene is 0.8:0.04:0.04:0.12. The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, the dimethyl ether and the propylene is 0.8:0.04:0.04:0.12. The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, the dimethyl ether and the propylene is 0.8:0.04:0.04:0.12.

[0020] The present application also provides an air conditioning system comprising the mixed refrigerant of any one of the preceding.

[0021] The mixed refrigerant and the air conditioning system provided by the present application have the following beneficial effects: The present application provides a ternary or quaternary or quinary environmentally friendly mixed refrigerant and an air conditioning system using the environmentally friendly mixed refrigerant, i.e., a first component, a second component and a third component are physically mixed according to their corresponding mass ratios (wherein the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is one or more of fluoroethane, propylene and dimethyl ether), effectively providing an environmentally friendly, safe and efficient refrigerant with a lower GWP value, GWP less than 50 and ODP of 0, which can be used to replace R134a, and also has excellent thermodynamic performance, unit volume refrigerating capacity comparable to or even better than R134a, bubble point temperature <-40℃, good low-temperature heating capacity, unit volume refrigerating capacity higher than R134a, which can effectively replace R134a, and meet the dual requirements of environmental protection and energy efficiency in the future. Using this refrigerant can reduce greenhouse gas emissions while ensuring safety and system performance, effectively solving the problem of high GWP of other refrigerants, while also solving the problem of poor thermodynamic performance of other refrigerants, reducing GWP while improving relative volume refrigerating capacity and improving refrigeration / heating performance (i.e., improving thermodynamic performance). DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting on the application or its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0023] It should be noted that the terms used herein are only for the purpose of describing specific embodiments. As used herein, the singular form "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0024] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application, unless otherwise specifically stated. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the enabling description where appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the example embodiments can have different values.

[0025] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" and the like indicate the orientation or positional relationship generally only for the convenience of describing the present application and simplifying the description, and in the absence of contrary indications, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of the respective components.

[0026] In addition, it should be noted that the use of the terms "first", "second", and the like to qualify parts is only for the convenience of distinguishing the corresponding parts, and in the absence of further declaration, the above terms have no special meaning, and therefore cannot be understood as limiting the scope of protection of the present application.

[0027] The present application provides a mixed refrigerant, wherein: The mixed refrigerant is composed of a first component, a second component, and a third component, wherein the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is one or more of fluoroethane, propylene, and dimethyl ether.

[0028] The present application effectively provides an environmentally friendly, safe and high-efficiency refrigerant by providing a ternary or quaternary or quinary environmentally friendly mixed refrigerant, i.e., a first component, a second component and a third component are physically mixed according to their corresponding mass ratios (wherein the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is one or more of fluoroethane, propylene and dimethyl ether), has a lower GWP value, GWP is less than 50, ODP is 0, can be used to replace R134a, also has excellent thermodynamic performance, the unit volume refrigerating capacity is equivalent to or even better than R134a, the bubble point temperature is <-40℃, has good low-temperature heating capacity, the unit volume refrigerating capacity is higher than R134a, can effectively realize efficient replacement of R134a, meets the dual needs of environmental protection and energy efficiency in the future. Using the refrigerant can reduce the emission of greenhouse gases under the premise of ensuring safety and system performance, effectively solve the problem of high GWP of other refrigerants, and also solve the problem of poor thermodynamic performance of other refrigerants, reduce GWP while improving the relative volume refrigerating capacity and the refrigeration / heating performance (i.e., improve the thermodynamic performance).

[0029] The present application provides a ternary, quaternary or quinary environmentally friendly mixed refrigerant that can replace R134a, wherein the first component of the new environmentally friendly refrigerant is TFP, the second component is R41, and the third component is one or more of R161, R1270 or RE170, each component is physically mixed in a liquid phase state at room temperature according to the corresponding mass ratio, and the sum of the mass percentage concentrations of each component is 100%. The basic information of each component involved is as follows:

[0030] The present application provides an environmentally friendly and efficient mixed refrigerant, which has a GWP of less than 50 and an ODP of 0, and has obvious environmental protection advantages. At the same time, the unit volume refrigerating capacity of the environmentally friendly mixed refrigerant is better than that of R134a, the bubble point temperature is lower, and the mixed refrigerant can better replace R134a.

[0031] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is fluoroethane, the mass percentage of 3,3,3-trifluoropropynyl (TFP) in the mixed refrigerant is 4-92%, the mass percentage of monofluoromethane in the mixed refrigerant is 4-16%, and the mass percentage of fluoroethane in the mixed refrigerant is 4-92%.

[0032] The application provides an environmentally-friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-92% of TFP, 4-16% of R41 and 4-92% of R161 in percentage by mass, wherein the thermodynamic performance (COP, volume refrigerating capacity) of the environmentally-friendly mixed refrigerant is good and the GWP is low when the three components satisfy the mass ratio, and the comprehensive performance of the two aspects is optimal. The flammability of 3,3,3-trifluoropropynyl (TFP) is improved, and the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced by adding monofluoromethane and fluoroethane into 3,3,3-trifluoropropynyl (TFP), wherein the GWP is less than 50, the ODP is 0, the system performance of the environmentally-friendly mixed refrigerant is equivalent to that of R134a, the unit volume refrigerating capacity is equivalent to or even better than that of R134a, the bubble point temperature is less than -40 DEG C, and the low-temperature heating capacity is good.

[0033] The environmentally-friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally-friendly mixed refrigerant is less than 50, and the environmental performance is excellent. (2) The bubble point temperature of the environmentally-friendly mixed refrigerant is less than -40 DEG C, and the unit volume refrigerating capacity is equivalent to or even better than that of R134a.

[0034] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is dimethyl ether, the mass ratio of 3,3,3-trifluoropropynyl (TFP) in the mixed refrigerant is 4-88% in percentage by mass, the mass ratio of monofluoromethane in the mixed refrigerant is 4-12% in percentage by mass, and the mass ratio of dimethyl ether in the mixed refrigerant is 8-84% in percentage by mass.

[0035] The application provides an environmentally-friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-88% of TFP, 4-12% of R41 and 8-84% of RE170 in percentage by mass, wherein the thermodynamic performance (COP, volume refrigerating capacity) of the environmentally-friendly mixed refrigerant is good and the GWP is low when the three components satisfy the mass ratio, and the comprehensive performance of the two aspects is optimal. The flammability of 3,3,3-trifluoropropynyl (TFP) is improved, and the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced by adding monofluoromethane and dimethyl ether into 3,3,3-trifluoropropynyl (TFP), wherein the GWP is less than 50, the ODP is 0, the system performance of the environmentally-friendly mixed refrigerant is equivalent to that of R134a, the unit volume refrigerating capacity is equivalent to or even better than that of R134a, the bubble point temperature is less than -40 DEG C, and the low-temperature heating capacity is good.

[0036] The environmentally-friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally friendly mixed refrigerant is less than 50, and the environmental performance is excellent; (2) The bubble point temperature of the environmentally friendly mixed refrigerant is less than -40℃, and the unit volume refrigerating capacity is equivalent to or even better than that of R134a.

[0037] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is propylene, the 3,3,3-trifluoropropynyl (TFP) accounts for 4-92% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% of the mass of the mixed refrigerant, and the propylene accounts for 4-92% of the mass of the mixed refrigerant.

[0038] The present application provides an environmentally friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-92% of TFP, 4-16% of R41 and 4-92% of R1270 by mass. When the three components satisfy the above mass ratio, the thermodynamic performance (COP, volumetric refrigerating capacity) of the environmentally friendly mixed refrigerant is good, the GWP is low, and the comprehensive performance of the two aspects is optimal. By adding monofluoromethane and propylene to 3,3,3-trifluoropropynyl (TFP), the flammability of 3,3,3-trifluoropropynyl (TFP) is improved, and the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced. The GWP is less than 50, and the ODP is 0. The system performance of the environmentally friendly mixed refrigerant is equivalent to that of R134a, the unit volume refrigerating capacity is equivalent to or even better than that of R134a, the bubble point temperature is less than -40℃, and the low temperature heating capacity is good.

[0039] The environmentally friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally friendly mixed refrigerant is less than 50, and the environmental performance is excellent; (2) The bubble point temperature of the environmentally friendly mixed refrigerant is less than -40℃, and the unit volume refrigerating capacity is equivalent to or even better than that of R134a.

[0040] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is fluoromethane and dimethyl ether, the 3,3,3-trifluoropropynyl (TFP) accounts for 4-84% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-12% of the mass of the mixed refrigerant, the fluoromethane accounts for 4-88% of the mass of the mixed refrigerant, and the dimethyl ether accounts for 4-80% of the mass of the mixed refrigerant.

[0041] The application provides an environmentally-friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-84% of TFP, 4-12% of R41, 4-88% of R161 and 4-80% of RE170 in percentage by mass. The environmentally-friendly mixed refrigerant has good thermodynamic performance (COP, volumetric refrigerating capacity) and low GWP, and the comprehensive performance of the two aspects is optimal. The combustibility of 3,3,3-trifluoropropynyl (TFP) is improved, and the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced by adding monofluoromethane, fluoroethane and dimethyl ether three kinds of refrigerants. The GWP is less than 50, the ODP is 0, the system performance of the environmentally-friendly mixed refrigerant is equivalent to that of R134a, the unit volumetric refrigerating capacity is equivalent to that of R134a or even better, the bubble point temperature is <-40℃, and the low-temperature heating capacity is good.

[0042] The environmentally-friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally-friendly mixed refrigerant is less than 50, and the environmental performance is excellent. (2) The bubble point temperature of the environmentally-friendly mixed refrigerant is <-40℃, and the unit volumetric refrigerating capacity is equivalent to that of R134a or even better.

[0043] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is fluoroethane and propylene, the mass ratio of 3,3,3-trifluoropropynyl (TFP) in the mixed refrigerant is 4-84%, the mass ratio of monofluoromethane in the mixed refrigerant is 4-8%, the mass ratio of fluoroethane in the mixed refrigerant is 4-60%, and the mass ratio of propylene in the mixed refrigerant is 8-88%.

[0044] The application provides an environmentally-friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-84% of TFP, 4-8% of R41, 4-60% of R161 and 8-88% of R1270 in percentage by mass. The environmentally-friendly mixed refrigerant has good thermodynamic performance (COP, volumetric refrigerating capacity) and low GWP, and the comprehensive performance of the two aspects is optimal. The combustibility of 3,3,3-trifluoropropynyl (TFP) is improved by adding monofluoromethane, fluoroethane and propylene, the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced, the GWP is less than 50, the ODP is 0, the system performance of the environmentally-friendly mixed refrigerant is equivalent to that of R134a, the unit volumetric refrigerating capacity is equivalent to or even better than that of R134a, the bubble point temperature is <-40℃, and the low-temperature heating capacity is good.

[0045] The environmentally-friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally-friendly mixed refrigerant is less than 50, and the environmental performance is excellent. (2) The bubble point temperature of the environmentally-friendly mixed refrigerant is <-40℃, and the unit volumetric refrigerating capacity is equivalent to or even better than that of R134a.

[0046] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is dimethyl ether and propylene, the mass ratio of 3,3,3-trifluoropropynyl (TFP) in the mixed refrigerant is 4-80%, the mass ratio of monofluoromethane in the mixed refrigerant is 4-16%, the mass ratio of dimethyl ether in the mixed refrigerant is 4-80%, and the mass ratio of propylene in the mixed refrigerant is 8-76% in percentage by mass.

[0047] The application provides an environmentally-friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-80% of TFP, 4-16% of R41, 4-80% of RE170 and 8-76% of R1270 in mass percentage. The environmentally-friendly mixed refrigerant has good thermodynamic performance (COP, volumetric refrigerating capacity) and low GWP, and the comprehensive performance of the two aspects is optimal. The combustibility of 3,3,3-trifluoropropynyl (TFP) is improved, and the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced by adding monofluoromethane, dimethyl ether and propylene into 3,3,3-trifluoropropynyl (TFP). The GWP is less than 50, the ODP is 0, the system performance of the environmentally-friendly mixed refrigerant is equivalent to that of R134a, the unit volumetric refrigerating capacity is equivalent to that of R134a or even better, the bubble point temperature is <-40℃, and the low-temperature heating capacity is good.

[0048] The environmentally-friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally-friendly mixed refrigerant is less than 50, and the environmental performance is excellent. (2) The bubble point temperature of the environmentally-friendly mixed refrigerant is <-40℃, and the unit volumetric refrigerating capacity is equivalent to that of R134a or even better.

[0049] In some embodiments, When the first component is 3,3,3-trifluoropropynyl (TFP), the second component is monofluoromethane, and the third component is fluoroethane, dimethyl ether and propylene, the mass percentage of 3,3,3-trifluoropropynyl (TFP) in the mixed refrigerant is 4-40%, the mass percentage of monofluoromethane in the mixed refrigerant is 4-16%, the mass percentage of fluoroethane in the mixed refrigerant is 4-64%, the mass percentage of dimethyl ether in the mixed refrigerant is 4-68%, and the mass percentage of propylene in the mixed refrigerant is 8-84%.

[0050] The application provides an environmentally-friendly refrigerant with low GWP, excellent performance and good safety, which comprises 4-40% of TFP, 4-16% of R41, 4-64% of R161, 4-68% of RE170 and 8-84% of R1270 in percentage by mass, wherein the thermodynamic performance (COP, volume refrigerating capacity) of the environmentally-friendly mixed refrigerant is good, the GWP is low, and the comprehensive performance of the two aspects is optimal. The combustibility of 3,3,3-trifluoropropynyl (TFP) is improved, and the GWP value of 3,3,3-trifluoropropynyl (TFP) is reduced by adding monofluoromethane, fluoroethane, dimethyl ether and propylene into 3,3,3-trifluoropropynyl (TFP), wherein the GWP is less than 50, the ODP is 0, the system performance of the environmentally-friendly mixed refrigerant is equivalent to that of R134a, the unit volume refrigerating capacity is equivalent to or even better than that of R134a, the bubble point temperature is <-40 DEG C, and the low-temperature heating capacity is good.

[0051] The environmentally-friendly mixed refrigerant has the following advantages: (1) The global warming potential GWP value of the environmentally-friendly mixed refrigerant is less than 50, and the environmental performance is excellent. (2) The bubble point temperature of the environmentally-friendly mixed refrigerant is <-40 DEG C, and the unit volume refrigerating capacity is equivalent to or even better than that of R134a.

[0052] The GWP of the ternary, quaternary or quinary mixed refrigerant is less than 50, and the capacity and energy efficiency of the refrigerant unit are equivalent to those of the unit using R134a refrigerant. The preferred combination mass ratio is as follows:

[0053] In some embodiments of the application, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane is 0.04:0.04:0.92, i.e. the three components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane are physically mixed uniformly at a mass ratio of 0.04:0.04:0.92 to obtain an environmentally-friendly mixed working medium.

[0054] In some embodiments of the application, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane is 0.92:0.04:0.04, i.e. the three components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane are physically mixed uniformly at a mass ratio of 0.92:0.04:0.04 to obtain an environmentally-friendly mixed working medium.

[0055] In some embodiments of the application, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane is 0.68:0.12:0.2, that is, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane are physically mixed uniformly at a mass ratio of 0.68:0.12:0.2 to obtain an environmentally friendly mixed working medium.

[0056] In some embodiments of the embodiment 4, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane is 0.8:0.16:0.04, that is, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the fluoroethane are physically mixed uniformly at a mass ratio of 0.8:0.16:0.04 to obtain an environmentally friendly mixed working medium.

[0057] In some embodiments of the embodiment 5, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether is 0.56:0.04:0.4, that is, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.56:0.04:0.4 to obtain an environmentally friendly mixed working medium.

[0058] In some embodiments of the embodiment 6, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether is 0.88:0.04:0.08, that is, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.88:0.04:0.08 to obtain an environmentally friendly mixed working medium.

[0059] In some embodiments of the embodiment 7, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether is 0.16:0.08:0.76, that is, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.16:0.08:0.76 to obtain an environmentally friendly mixed working medium.

[0060] In some embodiments of the embodiment 8, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether is 0.04:0.12:0.84, that is, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.04:0.12:0.84 to obtain an environmentally friendly mixed working medium.

[0061] In some embodiments, the mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene is 0.04:0.04:0.92, i.e. the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.04:0.92 to obtain an environmentally friendly mixed working medium.

[0062] In some embodiments, the mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene is 0.64:0.04:0.32, i.e. the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.64:0.04:0.32 to obtain an environmentally friendly mixed working medium.

[0063] In some embodiments, the mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene is 0.92:0.04:0.04, i.e. the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.92:0.04:0.04 to obtain an environmentally friendly mixed working medium.

[0064] In some embodiments, the mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene is 0.68:0.08:0.24, i.e. the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.68:0.08:0.24 to obtain an environmentally friendly mixed working medium.

[0065] In some embodiments, the mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene is 0.56:0.16:0.28, i.e. the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.56:0.16:0.28 to obtain an environmentally friendly mixed working medium.

[0066] In some embodiments, the mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene is 0.68:0.08:0.24, i.e. the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.68:0.08:0.24 to obtain an environmentally friendly mixed working medium. ​​​​​The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the dimethyl ether is 0.04:0.04:0.88:0.04, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.04:0.04:0.88:0.04 to obtain an environmentally friendly mixed working medium.

[0067] In some embodiments of example 15, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the dimethyl ether is 0.04:0.12:0.04:0.80, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.04:0.12:0.04:0.80 to obtain an environmentally friendly mixed working medium.

[0068] In some embodiments of example 16, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the dimethyl ether is 0.84:0.04:0.04:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the dimethyl ether are physically mixed uniformly at a mass ratio of 0.84:0.04:0.04:0.08 to obtain an environmentally friendly mixed working medium.

[0069] In some embodiments of example 17, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the propylene is 0.04:0.04:0.04:0.88, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.04:0.04:0.88 to obtain an environmentally friendly mixed working medium.

[0070] In some embodiments of example 18, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the propylene is 0.84:0.04:0.04:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane and the propylene are physically mixed uniformly at a mass ratio of 0.84:0.04:0.04:0.08 to obtain an environmentally friendly mixed working medium.

[0071] In some embodiments of example 19, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene is 0.04:0.08:0.8:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.08:0.8:0.08 to obtain an environmentally friendly mixed working medium.

[0072] In some embodiments of the above aspect, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are mixed at a mass ratio of 0.04:0.16:0.04:0.76. The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene is 0.04:0.08:0.8:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.08:0.8:0.08 to obtain an environmentally friendly mixed working medium.

[0073] In some embodiments of the above aspect, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are mixed at a mass ratio of 0.04:0.16:0.04:0.76. The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene is 0.04:0.08:0.8:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.08:0.8:0.08 to obtain an environmentally friendly mixed working medium.

[0074] In some embodiments of the above aspect, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are mixed at a mass ratio of 0.04:0.16:0.04:0.76. The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene is 0.04:0.08:0.8:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.08:0.8:0.08 to obtain an environmentally friendly mixed working medium.

[0075] In some embodiments of the above aspect, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are mixed at a mass ratio of 0.04:0.16:0.04:0.76. The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene is 0.04:0.08:0.8:0.08, that is, the four components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are physically mixed uniformly at a mass ratio of 0.04:0.08:0.8:0.08 to obtain an environmentally friendly mixed working medium.

[0076] In some embodiments of the above aspect, the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the difluoromethane and the propylene are mixed at a mass ratio of 0.04:0.16:0.04:0.76. The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene is 0.08:0.16:0.16:0.56:0.04, that is, the five components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene are physically mixed uniformly at a mass ratio of 0.08:0.16:0.16:0.56:0.04 to obtain an environmentally friendly mixed working medium.

[0077] In some embodiments of the embodiment 25, The mass ratio of the 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene is 0.4:0.08:0.08:0.32:0.12, that is, the five components of 3,3,3-trifluoropropynyl (TFP), the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene are physically mixed uniformly at a mass ratio of 0.4:0.08:0.08:0.32:0.12 to obtain an environmentally friendly mixed working medium.

[0078] The novel environmentally friendly refrigerant of the present application is used to replace R134a, and the selected design condition is that the evaporator evaporation temperature is 10℃, the condenser condensation temperature is 40℃, the gas phase at the outlet of the evaporator is in a superheated state, the superheat degree is 5℃, the liquid phase at the outlet of the condenser is in a subcooled state, the subcooling degree is 5℃, and the adiabatic efficiency of the compressor is 0.75. The cycle performance parameters in the refrigeration system using the above-mentioned embodiments and R134a refrigerant are respectively calculated, the property data are obtained from REFPROP 10.0, and the GWP (calculated according to the mass percentage linear addition), the relative unit volume refrigeration / heat quantity Qv (the unit volume refrigeration / heat quantity ratio of R134a), the relative performance coefficient COP (the performance coefficient ratio of R134a), the normal pressure boiling point (bubble point temperature) and the temperature glide are compared, and the results are shown in the following table:

[0079] As shown in Table 3, the GWP of the mixed working medium provided by the present application is less than 50, which can fully meet the limit control requirements of the current Kigali Amendment on refrigerants. The relative volume refrigeration capacity of all refrigerant formulations is greater than 1, the relative performance coefficient is greater than 0.8, and the highest volume refrigeration capacity is increased by 103% compared with R134a.

[0080] Comparative examples 1-3 are not within the mass ratio provided by the present application, the relative performance coefficient is small, and the temperature glide is large.

[0081] In summary, the ternary, quaternary and quinary mixed refrigerants provided by the present application have a GWP less than 50, and the volume refrigeration capacity is better than R134a, the thermodynamic performance is good, the bubble point temperature is low, and R134a can be well replaced.

[0082] The present application also provides an air conditioning system comprising the above-mentioned mixed refrigerant.

[0083] The present application provides an environmentally friendly refrigerant with low GWP, excellent performance and good safety, and an air conditioning system with the mixed refrigerant, which has the following beneficial effects: 1. The present application provides a novel environmentally friendly refrigerant with GWP less than 50 and ODP of 0, which is used to replace R134a.

[0084] 2. The system performance of the environmentally friendly mixed refrigerant of the present application is equivalent to that of R134a, the unit volume refrigerating capacity is equivalent to or even better than that of R134a, the bubble point temperature is <-40℃, and it has good low-temperature heating capacity.

[0085] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application and it should be pointed out that, for ordinary skilled in the art, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations shall be considered as the protection scope of the present application.

Claims

1. A mixed refrigerant, characterized in that: the mixed refrigerant is composed of a first component, a second component and a third component, wherein: the first component is 3, 3, 3-trifluoropropynyl, the second component is monofluoromethane, and the third component is one or more of fluoroethane, propylene and dimethyl ether. 2.The mixed refrigerant according to claim 1, characterized in that: when the first component is 3, 3, 3-trifluoropropynyl, the second component is monofluoromethane, and the third component is fluoroethane, the 3, 3, 3-trifluoropropynyl accounts for 4-92% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% of the mass of the mixed refrigerant, and the fluoroethane accounts for 4-92% of the mass of the mixed refrigerant. 3.The mixed refrigerant according to claim 1, characterized in that: when the first component is 3, 3, 3-trifluoropropynyl, the second component is monofluoromethane, and the third component is dimethyl ether, the 3, 3, 3-trifluoropropynyl accounts for 4-88% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-12% of the mass of the mixed refrigerant, and the dimethyl ether accounts for 8-84% of the mass of the mixed refrigerant. 4.The mixed refrigerant according to claim 1, characterized in that: when the first component is 3, 3, 3-trifluoropropynyl, the second component is monofluoromethane, and the third component is propylene, the 3, 3, 3-trifluoropropynyl accounts for 4-92% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% of the mass of the mixed refrigerant, and the propylene accounts for 4-92% of the mass of the mixed refrigerant. 5.The mixed refrigerant according to claim 1, characterized in that: when the first component is 3, 3, 3-trifluoropropynyl, the second component is monofluoromethane, and the third component is fluoroethane and dimethyl ether, the 3, 3, 3-trifluoropropynyl accounts for 4-84% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-12% of the mass of the mixed refrigerant, the fluoroethane accounts for 4-88% of the mass of the mixed refrigerant, and the dimethyl ether accounts for 4-80% of the mass of the mixed refrigerant. 6.The mixed refrigerant according to claim 1, characterized in that: when the first component is 3, 3, 3-trifluoropropynyl, the second component is monofluoromethane, and the third component is fluoroethane and propylene, the 3, 3, 3-trifluoropropynyl accounts for 4-84% of the mass of the mixed refrigerant, the monofluoromethane accounts for 4-8% of the mass of the mixed refrigerant, the fluoroethane accounts for 4-60% of the mass of the mixed refrigerant, and the propylene accounts for 8-88% of the mass of the mixed refrigerant. 7.The mixed refrigerant according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is dimethyl ether and propylene, the 3,3,3-trifluoropropynyl accounts for 4-80% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, the dimethyl ether accounts for 4-80% by mass of the mixed refrigerant, and the propylene accounts for 8-76% by mass of the mixed refrigerant.

8. The mixed refrigerant of claim 1, wherein: When the first component is 3,3,3-trifluoropropynyl, the second component is monofluoromethane, and the third component is dimethyl ether and propylene, the 3,3,3-trifluoropropynyl accounts for 4-80% by mass of the mixed refrigerant, the monofluoromethane accounts for 4-16% by mass of the mixed refrigerant, the dimethyl ether accounts for 4-80% by mass of the mixed refrigerant, and the propylene accounts for 8-76% by mass of the mixed refrigerant.

9. The mixed refrigerant of claim 2, wherein: The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.04:0.04:0.92; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.92:0.04:0.04; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.68:0.12:0.2; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.8:0.16:0.

04.

10. The mixed refrigerant of claim 3, wherein: The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.56:0.04:0.4; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.88:0.04:0.08; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.16:0.08:0.76; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.04:0.12:0.

84.

11. The mixed refrigerant of claim 4, wherein: The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.04:0.04:0.92; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.64:0.04:0.32; or, The mass ratio of the 3,3,3-trifluoropropynyl, the monofluoromethane, and the dimethyl ether is 0.92:0.04:0.04; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane and the propylene is 0.68:0.08:0.24; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane and the propylene is 0.56:0.16:0.

28.

12. The mixed refrigerant of claim 5, wherein: The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane and the dimethyl ether is 0.04:0.04:0.88:0.04; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane and the dimethyl ether is 0.04:0.12:0.04:0.80; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane and the dimethyl ether is 0.84:0.04:0.04:0.

08.

13. The mixed refrigerant of claim 6, wherein: The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane and the propylene is 0.04:0.04:0.04:0.88; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane and the propylene is 0.84:0.04:0.04:0.08; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane and the propylene is 0.04:0.08:0.6:0.

28.

14. The mixed refrigerant of claim 7, wherein: The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the dimethyl ether and the propylene is 0.04:0.08:0.8:0.08; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the dimethyl ether and the propylene is 0.04:0.16:0.04:0.76; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the dimethyl ether and the propylene is 0.8:0.04:0.04:0.

12.

15. The mixed refrigerant of claim 8, wherein: The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene is 0.04:0.04:0.04:0.84:0.04; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene is 0.08:0.16:0.16:0.56:0.04; or, The mass ratio of the 3,3,3-trifluoropropynol, the monofluoromethane, the fluoroethane, the dimethyl ether and the propylene is 0.4:0.08:0.08:0.32:0.

12.

16. An air conditioning system, comprising: The mixed refrigerant of any one of claims 1-15.

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