CN114752357B - Energy-saving environment-friendly refrigerant and application thereof - Google Patents
Energy-saving environment-friendly refrigerant and application thereof Download PDFInfo
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- CN114752357B CN114752357B CN202210317682.3A CN202210317682A CN114752357B CN 114752357 B CN114752357 B CN 114752357B CN 202210317682 A CN202210317682 A CN 202210317682A CN 114752357 B CN114752357 B CN 114752357B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 87
- 238000005057 refrigeration Methods 0.000 claims abstract description 25
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims abstract description 13
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 13
- 238000004378 air conditioning Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007791 liquid phase Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/042—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 compounds containing carbon and hydrogen only
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/40—Replacement mixtures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses an energy-saving environment-friendly refrigerant and application thereof. The energy-saving environment-friendly refrigerant consists of the following components in percentage by mass: 11-20% of ethane and 89-80% of propylene. Compared with the R32 and R410a refrigerants, the energy-saving and environment-friendly refrigerant provided by the invention has the advantages of lower filling quantity and higher refrigeration coefficient, and the energy-saving and environment-friendly refrigerant provided by the invention has lower exhaust temperature, is beneficial to the operation of a refrigeration compressor, and has higher reliability. The energy-saving environment-friendly refrigerant has no damage to the ozone layer, has extremely low greenhouse effect, better environmental protection and obvious energy-saving and emission-reducing benefits.
Description
Technical Field
The invention belongs to the technical field of refrigerants, and particularly relates to an energy-saving environment-friendly refrigerant and application thereof.
Background
In the field of refrigeration and air conditioning, R22 was one of the most widely used refrigerants, and in particular, R22 is almost used in the room air conditioner industry. However, since R22 destroys the ozone layer (ODP > 0), belonging to the class of Hydrochlorofluorocarbons (HCFCs), the elimination of Hydrochlorofluorocarbons (HCFCs) should be accelerated according to the teachings of the montreal protocol, and R22 also has a higher global warming potential (gwp=1810). The use of R22 has been banned in countries such as the united states, japan, etc. in china, R22 has been replaced more and more by some refrigerants which do not destroy the ozone layer, especially in the room air conditioner industry, by R32 and R410A, wherein R32 occupies a major portion of the substitution of R22 because it does not destroy the ozone layer, and the greenhouse effect is only about one third of R410A.
Because the refrigerating capacity of unit volume of R32 is 1.55 times of R22 under the nominal working condition of the room air conditioner, namely the working volume of the R32 refrigerating compressor is only 64.5 percent of R22, and the condensing pressure of R32 is 1.62 times of R22, when R32 is used for replacing R22, not only is the refrigerating compressor redesigned and a new manufacturing process planned, but also the whole refrigerating system redesigned and manufactured a refrigerating heat exchanger, a refrigerating agent pipeline, a valve and the like for improving the bearing capacity.
Although both R32 and R410A have no damaging effect on the ozone layer, there is still a high GWP value (global warming potential), the GWP value of R410A is 2010, the GWP value of R32 is 672, which have been listed as HFC-based substances in the list of required reduction in the basic california amendment of the montreal protocol, and the progress of the reduction of HFCs has been clearly determined. Chinese has been receiving the modification of Montreal protocol, and is accelerating the elimination of HCFCs and the reduction of HFCs refrigerants associated with environmental hazards. Thus, either R32 or R410A can only act as a transitional refrigerant. Currently, however, there is a gap for the R32 alternative.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides an energy-saving environment-friendly refrigerant and application thereof, and aims to develop a novel refrigerant, thereby solving the technical problem of harm to the environment existing in R32 and R410A.
In order to achieve the above object, according to one aspect of the present invention, there is provided an energy-saving and environment-friendly refrigerant comprising a binary mixture of ethane (R170) and propylene (R1270), wherein the sum of the mass percentage concentration of each component in the mixed refrigerant is 100%. Specifically, the refrigerant comprises the following components in percentage by mass: 11-20% of ethane and 89-80% of propylene.
Preferably, the refrigerant consists of the following components in percentage by mass: 13-17% of ethane and 83-87% of propylene.
Preferably, the refrigerant consists of the following components in percentage by mass: 17% of ethane and 83% of propylene.
Preferably, the refrigerant consists of the following components in percentage by mass: 20% of ethane and 80% of propylene.
Preferably, the refrigerant consists of the following components in percentage by mass: 15% of ethane and 85% of propylene.
Preferably, the refrigerant consists of the following components in percentage by mass: 13% of ethane and 87% of propylene.
According to another aspect of the present invention, there is provided the use of an energy efficient and environmentally friendly refrigerant as a refrigerant in a domestic refrigeration appliance, a stationary refrigeration system or a mobile air conditioning system. Wherein the stationary refrigeration system is a stationary refrigeration system such as a chiller or the like.
Preferably for replacing the R32 refrigerant or the R410A refrigerant.
In general, the above technical solutions conceived by the present invention can achieve at least the following advantageous effects compared to the prior art.
1. The ODP of the refrigerant provided by the invention is zero, the GWP value is only about 20, and the refrigerant has obvious environmental protection advantages;
2. the COP values of the refrigerant provided by the invention are obviously higher than the COP values of R32 and R410A, and the refrigerant has the obvious advantages of energy conservation and emission reduction.
3. The refrigerating capacity of the unit volume of the refrigerant provided by the invention is very similar to the refrigerating capacity of R32 and the refrigerating capacity of R410A, the refrigerant can be directly applied to replace R32 and R410A without replacing excessive parts or only changing part of parts.
4. The system filling amount of the refrigerant provided by the invention is only 54-77% of R32 and R410A, so that the refrigerant consumption can be greatly saved, and the unsafe property of refrigerant leakage can be indirectly reduced.
5. The refrigerant provided by the invention can fill the blank of the alternative scheme of the R32 and R410A refrigerants with higher GWP values, and has important significance for developing environment-friendly refrigerants in the field of refrigeration low temperature in China and accelerating the elimination of the refrigerants with high GWP values.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the specific implementation of the invention, the used refrigerants R170 and R1270 are all refrigerants commonly used in the refrigeration and low-temperature technical field, wherein the mass percentage of ethane (R170) is 11-20%, and the mass percentage of propylene (R1270) is 89-80%.
The energy-saving and environment-friendly refrigerant can be obtained by physically mixing the two component substances according to the specified mass ratio at normal temperature.
Table 1 shows the basic parameters of the components ethane (R170) and propylene (R1270) contained in the energy-saving and environment-friendly refrigerant of the present invention.
Table 1: basic physical parameters of R170 and R1270
| Parameters (parameters) | R170 | R1270 |
| Molecular formula | C 2 H 6 | C 3 H 6 |
| Relative molecular mass | 30 | 42.1 |
| Normal boiling point DEG C | -88.58 | -47.62 |
| Critical pressure MPa | 4.872 | 4.555 |
| Critical temperature (DEG C) | 32.17 | 91.06 |
| Critical density kg/m 3 | 206.18 | 229.63 |
| Security level | A3 | A3 |
| ODP | 0 | 0 |
| GWP | ～20 | ～20 |
Example 1
R170 and R1270 refrigerants commonly used in the field of refrigerants are taken, and R170 with the mass percentage of 20% and R1270 with the mass percentage of 80% are taken to be fully and physically mixed in a liquid phase state, so that the non-azeotropic mixed refrigerant is obtained.
Example 2
R170 and R1270 refrigerants commonly used in the field of refrigerants are taken, and 17% of R170 and 83% of R1270 by mass percent are taken to be fully and physically mixed in a liquid phase state, so that a non-azeotropic mixed refrigerant is obtained.
Example 3
R170 and R1270 refrigerants commonly used in the field of refrigerants are taken, and R170 with the mass percentage of 15% and R1270 with the mass percentage of 85% are taken to be fully and physically mixed in a liquid phase state, so that the non-azeotropic mixed refrigerant is obtained.
Example 4
R170 and R1270 refrigerants commonly used in the field of refrigerants are taken, and in a liquid phase state, R170 with the mass percent of 13% and R1270 with the mass percent of 87% are taken for full physical mixing, so that the non-azeotropic mixed refrigerant is obtained.
Example 5
R170 and R1270 refrigerants commonly used in the field of refrigerants are taken, and R170 and R1270 with the mass percent of 11% and 89% are taken to be fully and physically mixed in a liquid phase state, so that the non-azeotropic mixed refrigerant is obtained.
Comparative example 1
R170 and R1270 refrigerants commonly used in the field of refrigerants are taken, and R170 and R1270 with the mass percentage of 2% and 98% are taken to be fully and physically mixed in a liquid phase state, so that the non-azeotropic mixed refrigerant is obtained.
The relevant parameter indexes of the 5 embodiments are shown in table 2:
TABLE 2 examples 1-5 charges relative to R32 and R410A and ODP and GWP values thereof
As can be seen from the data in table 2, the filling amount of all examples calculated according to the relative molecular mass is 74.91% -77.49% of R32, and 53.69% -55.53% of R410A, so that the refrigerant amount can be remarkably saved; the ODP values of all examples are zero, the GWP values are about 20, only 1/33 of R32 and 1/100 of R410A, and the environmental protection advantage is obvious.
The theoretical cycle performance parameters of the refrigerant of the above embodiment and the R32 and R410A are calculated in the refrigeration system, and the selected calculation conditions are as follows according to the international ARI standard: the evaporation temperature was 7.2 ℃, the condensation temperature was 54.4 ℃, the supercooling temperature was 46.1 ℃, and the superheating temperature was 18.3 ℃. The compression process in the theoretical cyclic calculation process is isentropic compression.
The calculation is performed by using common refrigeration engineering software REFPROP10, and the obtained related parameter results are shown in Table 3:
table 3: ARI working condition theoretical cycle calculation parameter
Wherein, the evaporating pressure is saturated liquid pressure at 7.2 ℃ and the condensing pressure is saturated liquid pressure at 54.4 ℃.
The results show that:
1. the refrigeration coefficients COP of the refrigerants provided by the embodiments 1-5 are higher than that of R32, and the amplitude is from 10.9% to 11.5%; the COP of the refrigerant provided by the embodiments 1-5 is higher than that of R410A, and the amplitude is from 13.8% -14.4%, so that the refrigerant provided by the invention has obvious energy saving and emission reduction benefits for replacing R32 and R410A, and the COP of the refrigerant reaches the maximum in the embodiment 2 (the mass ratio is 17/83), and the COP of the refrigerant is reduced by increasing the proportion of R170 or reducing the proportion of R170.
2. The exhaust temperature of the refrigerant provided by the embodiment of the invention is lower than the exhaust temperature of R32 by more than 27 ℃, which is very beneficial to the operation of the refrigeration compressor, the refrigeration compressor has higher reliability, and the exhaust temperature of the refrigerant provided by the embodiment of the invention is lower than the exhaust temperature of R410A by about 11 ℃, which is also beneficial to the operation of the refrigeration compressor, and the refrigeration compressor also has high reliability.
3. The critical temperature, critical pressure, evaporating pressure and condensing pressure of the refrigerant provided by the embodiment of the invention are not different from those of R32 and R410A (the pressure ratio is lower than those of R32 and R410A, which is beneficial to improving the actual efficiency of the refrigeration compressor), so that the novel refrigerant has the feasibility of directly replacing R32 and R410A under the working condition.
4. The relative unit volume refrigeration capacity of the refrigerant provided by the embodiments 1-5 and the R410A is between 1.094-0.946, the maximum is not more than 110%, the minimum is not less than 94.6%, and the total refrigeration capacity is more than 93%, which indicates that the refrigerant provided by the embodiment can directly replace the R410A without replacing a refrigeration compressor, the relative volume refrigeration capacity of the refrigerant provided by the embodiment increases along with the increase of the proportion of the R170, and the proportion of the R170 which is continuously reduced is not suitable for directly replacing the R410A any more under the condition of the embodiment 5; the maximum refrigerating capacity of the refrigerating fluid provided by the embodiments 1-5 and R32 is not more than 100.8%, and the minimum refrigerating capacity is 87.2%, but the refrigerating capacities of the embodiments 1-3 are all more than 93%, which means that most of the embodiments provided by the invention can also directly replace R32 without replacing a refrigerating compressor, and the proportion of R170 which is continuously reduced in the case of the embodiment 3 is not suitable for directly replacing R32;
5. as can be seen from the results in Table 3, the refrigerant provided by the present invention has a relatively large slip temperature at one standard atmospheric pressure, from 11.019 ℃ to 15.306 ℃, but at an operating temperature (bubble point temperature) of 7.2 ℃, the corresponding dew point temperatures of the saturated liquid pressures are all less than 18.3 ℃, the maximum is 18.134 ℃, the minimum is 14.874 ℃, all meet the requirement of the ARI standard for an superheat temperature of 18.3 ℃, and the temperature increases as the proportion of R170 increases, and in the case of example 1, continued increase of the proportion of R170 will result in the temperature exceeding 18.3 ℃. In summary, the mass ratio of R170/R1270 is (20-15)/(80-85) (i.e. any mass ratio between the embodiment 1 and the embodiment 3) which can directly replace R32, and has obvious energy-saving benefit and environmental protection benefit; the mass ratio of R170/R1270 at (20-11)/(80-89) (i.e., any mass ratio between examples 1 to 5) can directly replace R410A, and has significant energy saving and environmental protection benefits.
6. The relative refrigerating capacity of R32 in comparative example 1 is only 0.698, namely only 69.8% of R32, which is far less than 93%, and R32 cannot be replaced at all; the relative unit volume refrigeration capacity for R410A is only 0.758, i.e., only 75.8% of R410A, and is much less than 93%, and is completely non-substitute for R410A.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (3)
1. The application of the energy-saving environment-friendly refrigerant in replacing R32 refrigerant is characterized in that the energy-saving environment-friendly refrigerant is used as the refrigerant in household refrigeration equipment, a fixed refrigeration system or a mobile air conditioning system; the energy-saving and environment-friendly refrigerant consists of the following components in percentage by mass: 15-17% of ethane and 83-85% of propylene, and the energy-saving and environment-friendly refrigerant has a higher refrigeration Coefficient (COP) than R32 refrigerant.
2. The use of claim 1, wherein the energy-saving and environment-friendly refrigerant consists of the following components in percentage by mass: 17% of ethane and 83% of propylene.
3. The use of claim 1, wherein the energy-saving and environment-friendly refrigerant consists of the following components in percentage by mass: 15% of ethane and 85% of propylene.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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2022
- 2022-03-29 CN CN202210317682.3A patent/CN114752357B/en active Active
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