CN114605965B - Mixed refrigerant and application thereof - Google Patents
Mixed refrigerant and application thereof Download PDFInfo
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- CN114605965B CN114605965B CN202210341511.4A CN202210341511A CN114605965B CN 114605965 B CN114605965 B CN 114605965B CN 202210341511 A CN202210341511 A CN 202210341511A CN 114605965 B CN114605965 B CN 114605965B
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- refrigerant
- mixed refrigerant
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- temperature
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 74
- 238000005057 refrigeration Methods 0.000 claims abstract description 22
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000005977 Ethylene Substances 0.000 claims abstract description 10
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 10
- 238000004378 air conditioning Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001704 evaporation Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- 238000007906 compression Methods 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 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
- 238000004134 energy conservation Methods 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
-
- 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
- C09K2205/40—Replacement mixtures
Abstract
The invention discloses a mixed refrigerant and application thereof. The mixed refrigerant comprises the following components in percentage by mass: ethylene 5.5-7.9 wt% and propylene 92.1-94.5 wt%. 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 a mixed 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
In view of the above-mentioned drawbacks or improvements of the prior art, the present invention provides a mixed 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 a mixed refrigerant comprising a binary mixture of ethylene (R1150) and propylene (R1270), wherein the sum of the mass percentage concentrations of the components in the mixed refrigerant is 100%. Specifically, the mixed refrigerant comprises the following components in percentage by mass: ethylene 5.5-7.9 wt% and propylene 92.1-94.5 wt%.
Preferably, the refrigerant consists of the following components in percentage by mass: 6-7% of ethylene and 93-94% of propylene.
Preferably, the refrigerant consists of the following components in percentage by mass: ethylene 6.5% and propylene 93.5%.
Preferably, the refrigerant consists of the following components in percentage by mass: ethylene 5.5% and propylene 94.5%.
Preferably, the refrigerant consists of the following components in percentage by mass: ethylene 7.9% and propylene 92.1%.
According to another aspect of the present invention there is provided the use of a mixed 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 mixed refrigerant provided by the invention has zero ODP and about 20 GWP, and has obvious environmental protection advantages; the COP values of the refrigerant are obviously higher than those of R32 and R410A, and the refrigerant has the advantages of obvious energy conservation and emission reduction. The unit volume refrigerating capacity of the mixed refrigerant provided by the invention is very similar to the unit volume refrigerating capacity of R32 and the unit volume refrigerating capacity of R410A, the mixed refrigerant can be directly applied to replace R32 and R410A without replacing excessive parts or only changing part of parts. The system filling amount of the refrigerant is only about 78% and 56% of R32 and R410A respectively, so that the consumption of the refrigerant can be greatly saved, and the unsafe property of the leakage of the refrigerant is indirectly reduced.
2. 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 R1150 and R1270 are all commonly used refrigerants in the technical fields of refrigeration and low temperature, wherein the mass percentage of ethylene (R1150) is 5.5% -7.9%, and the mass percentage of propylene (R1270) is 92.1% -94.5%.
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 ethylene (R1150) and propylene (R1270) contained in the energy-saving and environment-friendly refrigerant of the present invention.
Table 1: basic physical parameters of R1150 and R1270
Example 1
R1150 and R1270 refrigerants commonly used in the field of refrigerants are taken, and R1150 with the mass percent of 7.9% and R1270 with the mass percent of 92.1% are taken to be fully and physically mixed in a liquid phase state, so that the non-azeotropic mixed refrigerant is obtained.
Example 2
R1150 and R1270 refrigerants commonly used in the field of refrigerants are taken, and R1150 with the mass percent of 6.5% and R1270 with the mass percent of 93.5% are taken to be fully and physically mixed in a liquid phase state, so that the non-azeotropic mixed refrigerant is obtained.
Example 3
Taking R1150 and R1270 refrigerants commonly used in the field of refrigerants, and fully and physically mixing R1150 with the mass percent of 5.5% and R1270 with the mass percent of 94.5% in a liquid phase state to obtain the non-azeotropic mixed refrigerant.
The relevant parameter indexes of the 3 embodiments are shown in table 2:
TABLE 2 examples 1-3 charges relative to R32 and R410A and ODP and GWP values thereof
| Parameters (parameters) | R32 | R410A | Example 1 | Example 2 | Example 3 |
| Relative molecular mass | 52.02 | 72.59 | 40.48 | 40.76 | 40.95 |
| Relative filling quantity (R32) | 100％ | 139.54％ | 77.82％ | 78.35％ | 78.72％ |
| Relative filling quantity (R410A) | 71.66％ | 100％ | 55.77％ | 56.14％ | 56.41％ |
| ODP | 0 | 0 | 0 | 0 | 0 |
| GWP | 672 | 2010 | ～20 | ～20 | ～20 |
It can be seen that the filling amount of the embodiment calculated according to the relative molecular mass is only 77.82-78.72% of R32, 55.77-56.41% of R410A, and 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 REFPROP10 software which is common software in refrigeration engineering, and the theoretical calculation uses the circulation performance parameters of the refrigerant of the embodiment and the refrigerant of R32 and R410A in the refrigeration system respectively, so that the performance parameters are compared: critical temperature, critical pressure, temperature slip, evaporation pressure, condensing pressure, relative pressure ratio, discharge temperature, relative unit volume refrigeration q v And the relative coefficient of performance COP, the comparative parameter results are shown in table 3:
table 3: ARI working condition theoretical cycle calculation parameter
| Parameters (parameters) | R32 | R410A | Example 1 | Example 2 | Example 3 |
| Relative molecular mass | 52.02 | 72.59 | 40.48 | 40.76 | 40.95 |
| Critical temperature (DEG C) | 78.11 | 71.34 | 86.60 | 87.49 | 88.106 |
| Critical pressure MPa | 5.782 | 4.9011 | 4.9732 | 4.9082 | 4.8599 |
| Bubble point temperature (1.013 bar) | -51.651 | -51.448 | -66.830 | -64.174 | -62.104 |
| Dew point temperature (1.013 bar) | -51.651 | -51.369 | -50.085 | -49.649 | -49.334 |
| Slip temperature (DEG C) | 0 | 0.079 | 16.745 | 14.525 | 12.770 |
| Evaporation pressure bar | 10.177 | 10.010 | 10.859 | 10.214 | 9.751 |
| Bubble point temperature (DEG C) | 7.2 | 7.2 | 7.2 | 7.2 | 7.2 |
| Dew point temperature (DEG C) | 7.2 | 7.3 | 18.158 | 16.604 | 15.402 |
| Condensing pressure bar | 34.727 | 33.931 | 29.328 | 28.128 | 27.269 |
| Relative pressure ratio (R32) | 1 | 0.994 | 0.792 | 0.807 | 0.819 |
| Relative pressure ratio (R410A) | 1.006 | 1 | 0.797 | 0.812 | 0.825 |
| Exhaust temperature (DEG C) | 101.04 | 84.87 | 72.68 | 72.77 | 72.88 |
| Relative q v (R32) | 1 | 0.921 | 0.945 | 0.896 | 0.860 |
| Relative q v (R410A) | 1.085 | 1 | 1.025 | 0.972 | 0.934 |
| Relative COP (R32) | 1 | 0.975 | 1.172 | 1.157 | 1.144 |
| Relative COP (R410A) | 1.026 | 1 | 1.202 | 1.187 | 1.174 |
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 mixed refrigerant provided by the invention has the refrigeration coefficient COP higher than that of R32, and the amplitude is from 14.4% to 17.2%; the COP of the mixed refrigerant provided by the invention is higher than that of R410A, and the range is from 17.4% to 20.2%, so that the mixed refrigerant provided by the invention has obvious energy-saving and emission-reducing benefits when replacing R32 and R410A.
2. The exhaust temperature of the mixed refrigerant is 28 ℃ lower than that of R32, which is very beneficial to the operation of a refrigeration compressor, and the refrigeration compressor has higher reliability; the exhaust temperature of the mixed refrigerant provided by the invention is lower than that of R410A by more than 12 ℃, which is also beneficial to the operation of the refrigeration compressor, and the refrigeration compressor has high reliability.
3. The critical temperature, critical pressure, evaporating pressure and condensing pressure of the mixed refrigerant provided by the invention are not greatly different from those of R32 and R410A (the pressure ratio is lower than that of R32 and R410A, which is beneficial to improving the actual efficiency of the refrigeration compressor), so that the mixed refrigerant provided by the invention has the feasibility of directly replacing R32 and R410A under the working condition.
4. The refrigerating capacity of the mixed refrigerant and the refrigerating capacity of R410A in the unit volume are respectively more than 93% and 1.025-0.934, which indicates that the mixed refrigerant provided by the invention can directly replace R410A without replacing a refrigerating compressor; in the refrigerating capacity of the mixed refrigerant and R32 in relative unit volume, the embodiment 1 is more than 93 percent, 94.5 percent and the rest is less than 93 percent, which indicates that the mixed refrigerant embodiment 1 is a preferred embodiment and can directly replace R32 without replacing a refrigeration compressor.
5. As can be seen from the calculation result, the mixed refrigerant provided by the invention has a relatively large slip temperature from 12.770 ℃ to 16.745 ℃ under a standard atmospheric pressure, but the dew point temperature corresponding to the saturated liquid pressure is less than 18.3 ℃ when the working temperature (bubble point temperature) is 7.2 ℃, the maximum temperature is 18.158 ℃ and the minimum temperature is 15.402 ℃, and the requirements of the ARI standard on the superheat temperature of 18.3 ℃ are met.
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 (2)
1. A mixed refrigerant for replacing R32 refrigerant or R410A refrigerant, characterized in that the mixed refrigerant is composed of the following components in mass percent: ethylene 7.9% and propylene 92.1%.
2. Use of a mixed refrigerant according to claim 1 as a refrigerant in a domestic refrigeration appliance, a stationary refrigeration system or a mobile air conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210341511.4A CN114605965B (en) | 2022-03-29 | 2022-03-29 | Mixed refrigerant and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210341511.4A CN114605965B (en) | 2022-03-29 | 2022-03-29 | Mixed refrigerant and application thereof |
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| CN114605965A CN114605965A (en) | 2022-06-10 |
| CN114605965B true CN114605965B (en) | 2024-02-06 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317401A (en) * | 2009-02-13 | 2012-01-11 | 阿克马法国公司 | Method for heating and/or air-conditioning in a vehicle |
| CN104508076A (en) * | 2012-07-16 | 2015-04-08 | 塔泽提股份有限公司 | Refrigerant mixtures |
| CN112409994A (en) * | 2020-11-19 | 2021-02-26 | 湖北瑞能华辉能源管理有限公司 | Multi-alternative environment-friendly hydrocarbon mixed refrigerant and application thereof |
| CN113604201A (en) * | 2021-09-15 | 2021-11-05 | 珠海格力电器股份有限公司 | Mixed refrigerant and air conditioning system |
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- 2022-03-29 CN CN202210341511.4A patent/CN114605965B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317401A (en) * | 2009-02-13 | 2012-01-11 | 阿克马法国公司 | Method for heating and/or air-conditioning in a vehicle |
| CN104508076A (en) * | 2012-07-16 | 2015-04-08 | 塔泽提股份有限公司 | Refrigerant mixtures |
| CN112409994A (en) * | 2020-11-19 | 2021-02-26 | 湖北瑞能华辉能源管理有限公司 | Multi-alternative environment-friendly hydrocarbon mixed refrigerant and application thereof |
| CN113604201A (en) * | 2021-09-15 | 2021-11-05 | 珠海格力电器股份有限公司 | Mixed refrigerant and air conditioning system |
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