CN115612452A

CN115612452A - Refrigerant and use thereof

Info

Publication number: CN115612452A
Application number: CN202210946335.7A
Authority: CN
Inventors: 李华杰; 钟权; 赵桓; 黄宇杰; 吴敏庭
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2023-01-17

Abstract

The present application relates to a refrigerant and use thereof, wherein the refrigerant comprises a first component, a second component, a third component and a fourth component, wherein the first component is trifluoroiodomethane; the second component is 1, 2-trifluoroethylene, and the third component is propane; the fourth component includes at least one of 1, 1-difluoroethane, 2, 3-tetrafluoropropene, and trans-1, 3-tetrafluoropropene. Under the state of normal temperature and pressure and liquid phase, the first component, the second component, the third component and the fourth component are mixed to obtain the refrigerant, the GWP of the refrigerant is less than 50, the ODP is 0, the refrigerant has obvious environmental protection advantages, meanwhile, the thermal performance and the unit volume refrigerating capacity of the environment-friendly mixed refrigerant are similar to those of R290, the safety of the mixed refrigerant is obviously improved compared with that of R290, the mixed refrigerant is superior to the safety grade of R290, and the refrigerant can be applied to an air conditioner.

Description

Refrigerant and use thereof

Technical Field

The application relates to the technical field of refrigeration, in particular to a refrigerant and application thereof.

Background

In the process of global industrialization, the global warming problem is receiving more and more attention, and the global temperature rise causes the diversity of organisms and the living space to be seriously challenged. China officially accepted the Montreal protocol "Bulgarian amendments" in 2021 as a responsible country to reduce the emission of HFC (hydrofluorocarbons) non-CO 2 greenhouse gases. The internationally approved montreal protocol amendment requires a refrigerant that is neither ozone depleting nor has a low Global Warming Potential (GWP) value to replace the refrigerants having a high GWP at present and to be effectively used in refrigeration systems.

R290 as a natural environment-friendly refrigerant does not damage the ozone layer, has a low GWP value and has a great potential, but the development of the refrigerant in household air conditioners is limited due to the flammable and explosive properties of the refrigerant.

Disclosure of Invention

The purpose of the application is to provide a refrigerant and application thereof, wherein the performance of the refrigerant is equivalent to R290, the refrigerant is not flammable and explosive, and the refrigerant can be applied to air conditioners.

To this end, in a first aspect, embodiments herein provide a refrigerant comprising a first component, a second component, a third component, and a fourth component, the first component being trifluoroiodomethane; the second component is 1, 2-trifluoroethylene, and the third component is propane; the fourth component includes at least one of 1, 1-difluoroethane, 2, 3-tetrafluoropropene, and trans-1, 3-tetrafluoropropene.

In one possible implementation, the first component comprises 5% -20% of the refrigerant, the second component comprises 5% -20% of the refrigerant, the third component comprises 25% -75% of the refrigerant, and the fourth component comprises 10% -50% of the refrigerant in mole percentage.

In one possible implementation, the first component comprises 5-20% of the refrigerant, the second component comprises 5-10% of the refrigerant, the third component comprises 25-75% of the refrigerant, and the fourth component comprises 15-50% of the refrigerant in mole percent.

In one possible implementation, the first component comprises 5 to 20 mole percent of the refrigerant, the second component comprises 5 mole percent of the refrigerant, the third component comprises 25 to 45 mole percent of the refrigerant, and the fourth component comprises 30 to 50 mole percent of the refrigerant.

In one possible implementation, the first component comprises 5% -15% of the refrigerant, the second component comprises 5% -10% of the refrigerant, the third component comprises 50% -75% of the refrigerant, and the fourth component comprises 10% -35% of the refrigerant in mole percentage.

In one possible implementation, the first component accounts for 5-20% of the refrigerant, the second component accounts for 5-10% of the refrigerant, the third component accounts for 45-75% of the refrigerant, and the fourth component accounts for 10-45% of the refrigerant in mole percentage.

In one possible implementation, the fourth component is 1, 1-difluoroethane, and the trifluoroiodomethane accounts for 20% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 45% of the refrigerant, and the 1, 1-difluoroethane accounts for 30% of the refrigerant in a normal-temperature normal-pressure liquid-phase state in terms of mole percentage.

In one possible implementation, the fourth component is 2, 3-tetrafluoropropene, and the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 45% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 45% of the refrigerant in a normal-temperature normal-pressure liquid-phase state in terms of mole percentage.

In one possible implementation, the fourth component is 2, 3-tetrafluoropropene, and the trifluoroiodomethane accounts for 10%, the 1, 2-trifluoroethylene accounts for 5%, the propane accounts for 45%, and the 2, 3-tetrafluoropropene accounts for 40% of the refrigerant in a normal-temperature normal-pressure liquid-phase state in terms of mole percentage.

In a second aspect, the refrigerant according to any one of the above is used as a heat transfer working medium for an air conditioner.

According to the refrigerant and the application provided by the embodiment, the refrigerant comprises a first component, a second component, a third component and a fourth component, wherein the first component is trifluoroiodomethane; the second component is 1, 2-trifluoroethylene, and the third component is propane; the fourth component includes at least one of 1, 1-difluoroethane, 2, 3-tetrafluoropropene, and trans-1, 3-tetrafluoropropene. Under the state of normal temperature and pressure and liquid phase, the first component, the second component, the third component and the fourth component are mixed to obtain the refrigerant, the GWP of the refrigerant is less than 50, the ODP is 0, the refrigerant has obvious environmental protection advantages, meanwhile, the thermal performance and the unit volume refrigerating capacity of the environment-friendly mixed refrigerant are similar to those of R290, the safety of the mixed refrigerant is obviously improved compared with that of R290, the safety level of the mixed refrigerant is superior to that of R290, and the mixed refrigerant can be applied to an air conditioner.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to data in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

The embodiment of the application provides a refrigerant, which comprises a first component, a second component, a third component and a fourth component, wherein the first component is trifluoroiodomethane (R13I 1); a second component of 1, 2-trifluoroethylene (R1123), and a third component of propane (R290); the fourth component comprises at least one of 1, 1-difluoroethane (R152 a), 2, 3-tetrafluoropropene (R1234 yf), and trans-1, 3-tetrafluoropropene (R1234 ze (E)).

The refrigerant comprises, by mole percent, 5% -20% of a first component, 5% -20% of a second component, 25% -75% of a third component and 10% -50% of a fourth component.

The basic material parameters of the first, second, third and fourth components are shown in table 1.

TABLE 1 basic parameters of the substances

The safety levels are classified according to ASHRAE 34-2019 as incombustible (A1), weakly combustible (A2L), combustible (A2) and inflammable and explosive (A3) in sequence.

Example 1

The fourth component is 1, 1-difluoroethane, wherein in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 5 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 10 percent of the refrigerant, the propane accounts for 55 percent of the refrigerant, and the 1, 1-difluoroethane accounts for 30 percent of the refrigerant in percentage by mole; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components, namely trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane, at normal temperature and normal pressure according to a molar ratio of (5).

Example 2

The fourth component is 1, 1-difluoroethane, wherein in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 10 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 50 percent of the refrigerant, and the 1, 1-difluoroethane accounts for 35 percent of the refrigerant in percentage by mole; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components, namely trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane, at normal temperature and normal pressure according to a molar ratio of 10.

Example 3

The fourth component is 1, 1-difluoroethane, wherein in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 10 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 70 percent of the refrigerant, and the 1, 1-difluoroethane accounts for 10 percent of the refrigerant; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane are physically and uniformly mixed under normal temperature and pressure according to the molar ratio of 10.

Example 4

The fourth component is 1, 1-difluoroethane, wherein in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 15 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 50 percent of the refrigerant, and the 1, 1-difluoroethane accounts for 30 percent of the refrigerant in percentage by mole; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components, namely trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane, at normal temperature and normal pressure according to a molar ratio of 15.

Example 5

The fourth component is 1, 1-difluoroethane, wherein in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 20 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 45 percent of the refrigerant, and the 1, 1-difluoroethane accounts for 30 percent of the refrigerant in percentage by mole; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane are physically and uniformly mixed under normal temperature and pressure and in a liquid phase according to the molar ratio of 20.

Example 6

The fourth component is 2, 3-tetrafluoropropene, and in a liquid phase state at normal temperature and normal pressure, the trifluoroiodomethane accounts for 20% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 25% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 50% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 20.

Example 7

The fourth component is 2, 3-tetrafluoropropene, and in the state of normal temperature and pressure liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 45% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 45% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 5.

Example 8

The fourth component is 2, 3-tetrafluoropropene, and in the state of normal temperature and pressure liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 65% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 25% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to a molar ratio of 5.

Example 9

The fourth component is 2, 3-tetrafluoropropene, and in the state of normal temperature and pressure liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 70% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 20% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 5.

Example 10

The fourth component is 2, 3-tetrafluoropropene, and in a liquid phase state at normal temperature and normal pressure, the trifluoroiodomethane accounts for 10 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 45 percent of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 40 percent of the refrigerant; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 10.

Example 11

The fourth component is 2, 3-tetrafluoropropene, and in the state of normal temperature and pressure liquid phase, the trifluoroiodomethane accounts for 10% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 75% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 10% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to a molar ratio of 10.

Example 12

The fourth component is 2, 3-tetrafluoropropene, and in the state of normal temperature and pressure liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 10% of the refrigerant, the propane accounts for 60% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 25% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to a molar ratio of 5.

Example 13

The fourth component is 2, 3-tetrafluoropropene, and in the state of normal temperature and pressure liquid phase, the trifluoroiodomethane accounts for 15% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 50% of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 30% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to a molar ratio of 15.

Example 14

The fourth component is trans-1, 3-tetrafluoropropene, and in a state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 55% of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 35% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 5.

Example 15

The fourth component is trans-1, 3-tetrafluoropropene, and in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 75% of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 15% of the refrigerant in mol percent; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 5.

Example 16

The fourth component is trans-1, 3-tetrafluoropropene, and in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 10% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 50% of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 35% of the refrigerant in mol percent; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 10.

Example 17

The fourth component is trans-1, 3-tetrafluoropropene, and in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 10% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 65% of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 20% of the refrigerant in mol percent; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to a molar ratio of 10.

Example 18

The fourth component is trans-1, 3-tetrafluoropropene, and in a state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 10% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 55% of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 30% of the refrigerant in terms of mole percentage; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 10.

Example 19

The fourth component is trans-1, 3-tetrafluoropropene, and in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 20% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 50% of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 25% of the refrigerant in mol percent; namely, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 20.

Example 20

The fourth component is 1, 1-difluoroethane, 2, 3-tetrafluoropropene and trans-1, 3-tetrafluoropropene, and the trifluoroiodomethane accounts for 5 percent of the refrigerant in a liquid phase state under normal temperature and pressure in terms of mole percentage, 1, 2-trifluoroethylene accounts for 10% of the refrigerant, propane accounts for 55% of the refrigerant, 1-difluoroethane accounts for 5% of the refrigerant, 2, 3-tetrafluoropropene accounts for 10% of the refrigerant, trans-1,3,3,3-tetrafluoropropene accounts for 15% of the refrigerant, namely trifluoroiodomethane, 1,1,2-trifluoroethylene, propane, 1,1-difluoroethane, 2,3,3,3-tetrafluoropropene and trans-1,3,3,3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to the molar ratio of 5.

Example 21

The fourth component comprises 1, 1-difluoroethane and 2, 3-tetrafluoropropene, wherein in the state of normal temperature and pressure and liquid phase, the trifluoroiodomethane accounts for 10 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 60 percent of the refrigerant, the 1, 1-difluoroethane accounts for 5 percent of the refrigerant, and the 2, 3-tetrafluoropropene accounts for 20 percent of the refrigerant; the environment-friendly mixed working medium is prepared by physically and uniformly mixing five components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane, 1-difluoroethane and 2, 3-tetrafluoropropene at a normal temperature and pressure according to a molar ratio of 10.

Example 22

The fourth component comprises 1, 1-difluoroethane and trans-1, 3-tetrafluoropropene, wherein in a state of normal temperature and normal pressure and liquid phase, the trifluoroiodomethane accounts for 15 percent of the refrigerant, the 1, 2-trifluoroethylene accounts for 5 percent of the refrigerant, the propane accounts for 50 percent of the refrigerant, the 1, 1-difluoroethane accounts for 10 percent of the refrigerant, and the trans-1, 3-tetrafluoropropene accounts for 20 percent of the refrigerant; namely, the five components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane, 2, 3-tetrafluoropropene and trans-1, 3-tetrafluoropropene are physically and uniformly mixed at normal temperature and normal pressure according to a molar ratio of 15.

Example 23

The fourth component is 2, 3-tetrafluoropropene and trans-1, 3-tetrafluoropropene, and the trifluoroiodomethane accounts for 10 percent of the refrigerant in a liquid phase state under normal temperature and normal pressure in percentage by mole, 1, 2-trifluoroethylene comprises 5% of the refrigerant, propane comprises 60% of the refrigerant, 2, 3-tetrafluoropropene comprises 5% of the refrigerant, and trans-1, 3-tetrafluoropropene comprises 15% of the refrigerant; the environment-friendly mixed working medium is prepared by physically and uniformly mixing five components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane, 1-difluoroethane and trans-1, 3-tetrafluoropropene at a normal temperature and pressure according to a molar ratio of 10.

Comparative example 1

Under the conditions of normal temperature and normal pressure and liquid phase, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane are physically and uniformly mixed according to the molar ratio of 10.

Comparative example 2

Under the state of normal temperature and pressure and liquid phase, three fluorine iodomethane, 1, 2-trifluoroethylene, propane and 1, 1-difluoroethane are physically mixed uniformly according to the molar ratio of 40.

Comparative example 3

Under the state of normal temperature and pressure and liquid phase, three fluorine iodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed according to the molar ratio of 10.

Comparative example 4

Under the conditions of normal temperature and normal pressure and liquid phase, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and 2, 3-tetrafluoropropene are physically and uniformly mixed according to the molar ratio of 30.

Comparative example 5

Under the state of normal temperature and pressure and liquid phase, three fluorine iodine methane (R13I 1), 1, 2-trifluoroethylene (R1123), propane (R290) and trans-1, 3-tetrafluoropropene (R1234 ze (E)) are physically mixed uniformly according to the molar ratio of 5.

Comparative example 6

Under the state of normal temperature and pressure and liquid phase, three fluorine iodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically and uniformly mixed according to the molar ratio of 35.

Comparative example 7

Under the conditions of normal temperature and normal pressure and liquid phase, the four components of trifluoroiodomethane, 1, 2-trifluoroethylene, propane and trans-1, 3-tetrafluoropropene are physically mixed uniformly according to the molar ratio of 5.

Under the refrigeration working condition, namely the evaporation temperature is 10 ℃, the condensation temperature is 40 ℃, the superheat degree is 5 ℃, the supercooling degree is 5 ℃, and the adiabatic efficiency of the compressor is 0.75; the cycle performance parameters of the refrigerant in the refrigeration system are respectively calculated theoretically by using the embodiment, the comparative example and the R290, the physical property data are all taken from REFPROP 10.0, GWP (calculated according to linear sum of mass percentages), relative unit volume refrigerating capacity Qv (ratio of the refrigerating capacity in unit volume of R290), relative coefficient of performance COP (ratio of the coefficient of performance of R290), safety class and temperature slippage are compared, the temperature slippage refers to the change value of the phase change temperature when the refrigerant mixture is subjected to phase change under a certain constant pressure, and the heat exchanger needs to be re-optimized and designed if the temperature slippage is too large, and the test result is shown in Table 2.

TABLE 2 test results of example 1 to example 23, R290 and comparative example 1 to comparative example 7

As can be seen from table 1, the ODP (ozone depleting potential) values of the respective substances of the first component, the second component, the third component and the fourth component are zero, and thus the ODP values of the refrigerants obtained by mixing are also zero, i.e., the ODP values of examples 1 to 23 and comparative examples 1 to 7 are zero.

As can be seen from table 2, examples 1 to 23 all provide refrigerants having GWP (global warming potential) values of less than 50 and excellent environmental properties. The ODP and GWP values of examples 1 to 23 fully meet the carbon emission reduction target of the basal galileo amendment of montreal protocol. Meanwhile, it can be seen that the relative coefficient of performance of each of examples 1 to 23 is greater than 0.98, the relative volumetric refrigerating capacity is greater than 0.98, and the temperature slip is less than 5 ℃, so that the relative volumetric refrigerating capacity and the relative coefficient of performance of the refrigerant are similar to or better than those of R290, that is, the refrigerant has good thermodynamic performance. And, in the refrigerant its security level is A2 or A2, for R290's security performance is A3 level, the security performance of this application is higher, and is difficult flammable explosive.

Therefore, when the first component accounts for 5-20% of the refrigerant, the second component accounts for 5-20% of the refrigerant, the third component accounts for 25-75% of the refrigerant, and the fourth component accounts for 10-50% of the refrigerant in mole percentage, the refrigerant not only has the environment-friendly characteristic of low GWP, but also has the thermal performance equivalent to R290, the volumetric refrigerating capacity equivalent to or better than R290, the temperature glide is less than 5 ℃, the safety rating is A2 or A2L, and is better than R290, and R290 can be well replaced.

Further, example 5 to example 7, example 10, example 12 to example 13, example 18 to 19, example 20, example 22 to example 23 satisfy that the first component accounts for 5 to 20% of the refrigerant, the second component accounts for 5 to 10% of the refrigerant, the third component accounts for 25 to 75% of the refrigerant, and the fourth component accounts for 15 to 50% of the refrigerant in terms of mole percentage. As can be seen from table 2, examples 6 to 7, 10, 12 to 13, and 18 to 19 have a safety factor of A2L, i.e., better safety performance.

Further, examples 5 to 7 and 10 satisfy that the first component accounts for 5 to 20 percent of the refrigerant, the second component accounts for 5 percent of the refrigerant, the third component accounts for 25 to 45 percent of the refrigerant, and the fourth component accounts for 30 to 50 percent of the refrigerant in mole percent. As can be seen from table 2, the safety factor of examples 5 to 6 and example 10 is A2L, and the temperature slip is less than 4 ℃, i.e., the temperature slip is smaller while the safety performance is better.

Examples 1-4, examples, and 21 satisfy that the first component comprises 5-15% of the refrigerant, the second component comprises 5-10% of the refrigerant, the third component comprises 50-75% of the refrigerant, and the fourth component comprises 10-35% of the refrigerant, in mole percent. As can be seen from table 2, the relative cooling capacity per unit volume of examples 1 to 4 is greater than 1.05, and the relative cooling capacity per unit volume is more effective than that of R290.

Example 7-example 19 and example 23 satisfy that the first component comprises 5% -20% of the refrigerant, the second component comprises 5% -10% of the refrigerant, the third component comprises 45% -75% of the refrigerant, and the fourth component comprises 10% -45% of the refrigerant in mole percent. As can be seen from table 2, the GWPs of examples 7-19 are less than 3, closer to the GWP of R290.

Comparative examples 1-7 are not within the molar ratios provided herein, the temperature glide is all over 5 ℃, and the relative coefficient of performance or relative volumetric capacity relative to R290 is less than 0.98, the thermodynamic performance is poor relative to R290, and comparative example 7 has a safety rating of A3, the safety performance is low.

Any of the embodiments described above provides a refrigerant that can be used as a heat transfer working medium for an air conditioning apparatus, which can be a household air conditioner.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "over 8230" \8230on "," over 82308230; "over 8230;" and "over 8230; \8230; over" in the present disclosure should be interpreted in the broadest manner such that "over 8230;" over 8230 ";" not only means "directly over something", but also includes the meaning of "over something" with intervening features or layers therebetween, and "over 8230;" over 8230 ";" or "over 8230, and" over "not only includes the meaning of" over "or" over "but also may include the meaning of" over "or" over "with no intervening features or layers therebetween (i.e., directly over something).

Furthermore, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A refrigerant comprising a first component, a second component, a third component, and a fourth component, the first component being trifluoroiodomethane; the second component is 1, 2-trifluoroethylene, and the third component is propane; the fourth component includes at least one of 1, 1-difluoroethane, 2, 3-tetrafluoropropene, and trans-1, 3-tetrafluoropropene.

2. The refrigerant of claim 1, wherein the first component comprises 5 to 20 mole percent of the refrigerant, the second component comprises 5 to 20 mole percent of the refrigerant, the third component comprises 25 to 75 mole percent of the refrigerant, and the fourth component comprises 10 to 50 mole percent of the refrigerant.

3. The refrigerant of claim 2, wherein the first component comprises 5 to 20 mole percent of the refrigerant, the second component comprises 5 to 10 mole percent of the refrigerant, the third component comprises 25 to 75 mole percent of the refrigerant, and the fourth component comprises 15 to 50 mole percent of the refrigerant.

4. The refrigerant of claim 3, wherein the first component comprises 5-20% of the refrigerant, the second component comprises 5% of the refrigerant, the third component comprises 25-45% of the refrigerant, and the fourth component comprises 30-50% of the refrigerant in mole percent.

5. The refrigerant of claim 2, wherein the first component comprises 5-15% of the refrigerant, the second component comprises 5-10% of the refrigerant, the third component comprises 50-75% of the refrigerant, and the fourth component comprises 10-35% of the refrigerant in mole percent.

6. The refrigerant of claim 2, wherein the first component comprises 5 to 20 mole percent of the refrigerant, the second component comprises 5 to 10 mole percent of the refrigerant, the third component comprises 45 to 75 mole percent of the refrigerant, and the fourth component comprises 10 to 45 mole percent of the refrigerant.

7. The refrigerant according to claim 2, wherein the fourth component is 1, 1-difluoroethane, and in a state of an ordinary temperature and pressure liquid phase, the trifluoroiodomethane accounts for 20% of the refrigerant, the 1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 45% of the refrigerant, and the 1, 1-difluoroethane accounts for 30% of the refrigerant, in terms of mole percentage.

8. The refrigerant according to claim 2, wherein the fourth component is 2,3,3,3-tetrafluoropropene, and in a state of an ordinary-temperature-and-ordinary-pressure liquid phase, the trifluoroiodomethane accounts for 5% of the refrigerant, the 1,1, 2-trifluoroethylene accounts for 5% of the refrigerant, the propane accounts for 45% of the refrigerant, and the 2,3,3,3-tetrafluoropropene accounts for 45% of the refrigerant, in terms of mole percentage.

9. The refrigerant according to claim 2, wherein the fourth component is 2,3,3,3-tetrafluoropropene, and in a state of an ordinary-temperature-and-ordinary-pressure liquid phase, the trifluoroiodomethane accounts for 10%, the 1,1,2-trifluoroethylene accounts for 5%, the propane accounts for 45%, and the 2,3,3,3-tetrafluoropropene accounts for 40% of the refrigerant, in terms of mole percentage.

10. The refrigerant according to any one of claims 1 to 9, which is used as a heat transfer working medium for an air conditioner.