CN104212414A - Mixed refrigerant - Google Patents
Mixed refrigerant Download PDFInfo
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- CN104212414A CN104212414A CN201310217931.2A CN201310217931A CN104212414A CN 104212414 A CN104212414 A CN 104212414A CN 201310217931 A CN201310217931 A CN 201310217931A CN 104212414 A CN104212414 A CN 104212414A
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- hcfc
- hfc
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- mix refrigerant
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- 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 a mixed refrigerant composed of ethyl fluoride (HFC-161) and monochlorodifluoromethane (HCFC-22), wherein the mass percentages are 1%-99% of HFC-161 and 1%-99% of HCFC-22. The refrigerant has the environmental-protection performance better than that of HCFC-22, has the thermodynamic performance equal to that of HCFC-22, can realize perfusion replacement directly in an original HCFC-22 used system without changing any part, can greatly improve the energy efficiency ratio, reduces the filling quantity, and has the advantages of low replacement cost, resource saving and energy saving.
Description
Technical field
The present invention relates to a kind of mix refrigerant, particularly relate to a kind of for freezing, in the equipment such as air-conditioning, heat pump system do not do any change and directly substitute HCFC-22 and destroy atmospheric ozone potential and all lower refrigeration agent of Greenhouse effect.
Background technology
HCFC-22 is owing to having excellent physical chemistry and thermomechanical property and good safety in utilization, economy, become most widely used in domestic and international refrigerating and air conditioning industry, the classic refrigeration agent of over-all properties, but HCFC-22 has higher GWP(global warming potential) value and ODP(ozone depletion potential) value, not friendly to the environment is the material being required that time limit is eliminated.
The substitute of current most popular HCFC-22 is R410A and R407C, though its ODP is 0, but GWP is still higher, and compressor, interchanger, pipeline and system to be redesigned in use, all directly cannot substitute in the refrigeration system using HCFC-22 and use.
Except R410A and R407C, also large quantifier elimination is carried out to HCFC-22 surrogate both at home and abroad, has had following report:
(1) publication number is the patent of invention of CN1055300C and CN1244663C, adopt the surrogate of tertiary mixture as HCFC-22 of HFC-32, HFC-125 and HFC-152a, the patent of invention of publication number CN1412266A, adopts the mixture replacing HCFC-22 of HFC-32, HFC-134a and HFC-143a; The patent of invention of publication number CN1136065A, adopts the mixture replacing HCFC-22 of HFC-32, HFC-125 and HFC-227ea; CN1189525A adopts the mixture replacing HCFC-22 of HFC-32, HFC-134a and HFC-227ea, the patent of invention of publication number CN1780892A, have employed the mixture replacing HCFC-22 of HFC-161, HFC-32 and HFC-125, these surrogates all directly cannot not done any change and are directly substituted use in the system of HCFC-22;
(2) patent of invention of publication number CN1173525A, adopts the mixture replacing HCFC-22 of HC-290, HC-600a and TS fire retardant; The patent of invention of publication number CN1255502C, adopt the mixture replacing HCFC-22 of HC-1270, FC-13I1 and HC-170, such mixture is using hydrocarbon polymer and composition thereof as main body, and not only firing property is extremely strong, and there is the hidden danger of optical haze effect, likely cause new environmental problem;
(3) also having part to invent is adopt the method for HCFC-22 and the mixing of other materials to substitute HCFC-22, as publication number CN1269391A adopts HCFC-22 and HFC-152a mixture; The patent of invention of publication number CN1236801A adopts the mixture of HCFC-22, HFC-152a and HFC-125; The patent of invention of publication number CN1837323A adopts the mixture of HCFC-22, HFC-152a and HCFC-124; Though these surrogates directly can substitute and use in the system of HCFC-22, its performance comparatively HCFC-22 still has larger difference.
In the face of the environmental protection new demand that day by day urgent environmental problem and ODP and GWP lay equal stress on, find a kind of use properties and be not less than HCFC-22, environmental performance is better than HCFC-22 and in HCF-22 system, can change any parts directly substituting thus reducing the refrigeration agent of alternative cost and become the task of top priority.
Summary of the invention
The object of the present invention is to provide a kind of environmental performance and use properties to be all better than HCFC-22, can not change in the system being used in HCFC-22 any parts directly substitute use, the refrigeration agent of low alternative cost.
For reaching goal of the invention the technical solution used in the present invention be:
A kind of mix refrigerant, it is characterized in that this refrigeration agent is made up of fluoroethane (HFC-161) and difluorochloromethane (HCFC-22), its mass percent is: HFC-161:1%-99%; HCFC-22:1%-99%.
Above-mentioned mix refrigerant can form non-combustible mix refrigerant, and the mass percent of its fluoroethane (HFC-161) and difluorochloromethane (HCFC-22) is: HFC-161:1%-12%, HCFC-22:88%-99%; Preferred mass per-cent is: HFC-161:5%-10%, HCFC-22:90%-95%.
Above-mentioned mix refrigerant can form weak flammable mix refrigerant, and the mass percent of its fluoroethane (HFC-161) and difluorochloromethane (HCFC-22) is: HFC-161:13%-60%, HCFC-22:40%-87%; Preferred mass per-cent is: HFC-161:30%-50%, HCFC-22:50%-70%.
Refrigeration agent of the present invention, compared with existing disclosed technology, has the following advantages:
(1) environmental performance is better than HCFC-22, and depletion potential ODP value and global warming potential GWP value all comparatively HCFC-22 have and reduce by a relatively large margin;
(2) evaporating pressure, condensing pressure, pressure ratio and refrigerating effect per unit swept volume etc. are all close with HCFC-22, and temperature glide is minimum, and COP value is greater than HCFC-22; Under the prerequisite not changing any parts of equipment, refrigeration agent of the present invention can be directly used in the system of former use HCFC-22, and can reduce filling quantity, improves Energy Efficiency Ratio, has the advantage of saving resource, save energy.
Embodiment
Refrigeration agent provided by the invention, its preparation method is that fluoroethane (HFC-161) and difluorochloromethane (HCFC-22) are carried out physical mixed according to its corresponding proportioning under liquid phase state.
Fluoroethane (HFC-161) in said components, its molecular formula is CH
3cH
2f, molecular weight is 48.06, and normal boiling point is-37.1 DEG C, and critical temperature is 102.2 DEG C, and emergent pressure is 4.70MPa.
Difluorochloromethane (HCFC-22) in said components, its molecular formula is CHF
2cl, molecular weight is 86.47, and normal boiling point is-40.81 DEG C, and critical temperature is 96.15 DEG C, and emergent pressure is 4.99MPa.
The following examples are used for several embodiment of the present invention is described, but do not limit the invention to these embodiments.One skilled in the art would recognize that all alternativess, improvement project and the equivalents that present invention encompasses and may comprise in Claims scope.
Embodiment 1: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 1:99 under liquid phase.
Embodiment 2: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 99:1 under liquid phase.
Embodiment 3: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 12:88 under liquid phase.
Embodiment 4: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 5:95 under liquid phase.
Embodiment 5: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 10:90 under liquid phase.
Embodiment 6: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 13:87 under liquid phase.
Embodiment 7: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 90:10 under liquid phase.
Embodiment 8: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 30:70 under liquid phase.
Embodiment 9: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 70:30 under liquid phase.
Embodiment 10: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 50:50 under liquid phase.
Embodiment 11: HFC-161, HCFC-22 are carried out physical mixed by the mass percent of 60:40 under liquid phase.
Now the performance of above-described embodiment and HCFC-22 are compared, feature of the present invention and effect are described.
1, flammable
Table 1 compares the combustibility of above-described embodiment.
Table 1 combustibility compares
As can be seen from Table 1, after above-described embodiment increases the content of HCFC-22, effectively can reduce the combustibility of HFC-161, make it have good safety performance, wherein lower flammability limit is greater than 0.1kg/m
3mixing medium be weak flammable working medium, lower flammability limit is less than 0.1kg/m
3mixing medium be flammable working medium.
2, environmental performance
Table 1 compares the environmental performance of above-described embodiment and HCFC-22.Wherein ODP value is using CFC-11 as benchmark value 1.0, and GWP value is with CO
2as benchmark value 1.0(100).
Table 2 comparison of environmental performance
| Working medium | ODP | GWP |
| Embodiment 1 | 0.0495 | 1790 |
| Embodiment 2 | 0.0005 | 30 |
| Embodiment 3 | 0.0440 | 1590 |
| Embodiment 4 | 0.0475 | 1720 |
| Embodiment 5 | 0.0450 | 1630 |
| Embodiment 6 | 0.0435 | 1570 |
| Embodiment 7 | 0.0050 | 190 |
| Embodiment 8 | 0.0350 | 1270 |
| Embodiment 9 | 0.0150 | 550 |
| Embodiment 10 | 0.0250 | 910 |
| Embodiment 11 | 0.020 | 730 |
| HCFC-22 | 0.050 | 1810 |
As can be seen from Table 2, Ozone depletion potential (ODP) value and global warming potential (GWP) value of above-described embodiment are all less than HCFC-22, are less than HCFC-22 to the impact of environment.
3, temperature glide
Table 3 temperature glide table
| Working medium | Bubble point temperature (DEG C) | Dew-point temperature (DEG C) | Temperature glide (DEG C) |
| Embodiment 1 | -41.72 | -40.94 | 0.78 |
| Embodiment 2 | -38.44 | -38.42 | 0.02 |
| Embodiment 3 | -40.71 | -40.69 | 0.02 |
| Embodiment 4 | -40.80 | -40.80 | 0 |
| Embodiment 5 | -40.74 | -40.74 | 0 |
| Embodiment 6 | -40.69 | -40.67 | 0.02 |
| Embodiment 7 | -38.90 | -38.77 | 0.13 |
| Embodiment 8 | -40.20 | -40.08 | 0.12 |
| Embodiment 9 | -39.42 | -39.16 | 0.26 |
| Embodiment 10 | -39.42 | -39.16 | 0.26 |
| Embodiment 11 | -38.97 | -38.69 | 0.28 |
As seen from the table, the temperature glide of each embodiment is all less than 1 DEG C, is indicated as nearly azeotropic mixture, is conducive to the steady running of system.
4, thermal parameter and thermal performance
Under standard air conditioning condition (i.e. vaporization temperature=7.2 DEG C, condensing temperature=54.4 DEG C, suction temperature=35 DEG C, supercooling temperature=46.1 DEG C), thermal parameter (that is: the evaporating pressure P of above-described embodiment and HCFC-22
0, condensing pressure P
k, pressure ratio P
k/ P
0, exhaust temperature t
2) and relative thermal performance (that is: relative COP, relative unit quality heating capacity q
0, relative unit volume heating capacity q
v, relative unit volume wasted work amount w
v) relatively in table 2.
Above-mentioned relative thermal performance refers to the ratio of each embodiment thermal performance and HCFC-22 thermal performance, and relative density refers to relative liquid density when 25 DEG C.
The comparison of table 4 thermal parameter and thermal performance
As seen from Table 4, under standard air conditioning condition, the condensing pressure of the various embodiments described above and pressure ratio are all suitable with HCFC-22, and exhaust temperature, all lower than HCFC-22, can directly charge in the system of former use HCFC-22.The unit mass refrigerating duty of the various embodiments described above is all higher than HCFC-22, and density is far below HCFC-22, can reduce the filling quantity of systematic working medium.The volume refrigerating capacity compressor of each embodiment is suitable with HCFC-22, and COP value is all greater than HCFC-22, therefore has energy-saving effect.
Claims (5)
1. a mix refrigerant, it is characterized in that described refrigeration agent is made up of HFC-161 and HCFC-22, its mass percent is: HFC-161:1%-99%; HCFC-22:1%-99%.
2., according to mix refrigerant according to claim 1, it is characterized in that described refrigeration agent is non-combustible mix refrigerant, the mass percent of HFC-161 and HCFC-22 is: HFC-161:1%-12%; HCFC-22:88%-99%.
3., according to mix refrigerant according to claim 2, it is characterized in that the mass percent of described HFC-161 and HCFC-22 is: HFC-161:5%-10%; HCFC-22:90%-95%.
4., according to mix refrigerant according to claim 1, it is characterized in that described refrigeration agent is weak flammable mix refrigerant, the mass percent of HFC-161 and HCFC-22 is: HFC-161:13%-60%; HCFC-22:40%-87%.
5., according to mix refrigerant according to claim 4, it is characterized in that the mass percent of described HFC-161 and HCFC-22 is: HFC-161:30%-50%; HCFC-22:50%-70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310217931.2A CN104212414A (en) | 2013-06-03 | 2013-06-03 | Mixed refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310217931.2A CN104212414A (en) | 2013-06-03 | 2013-06-03 | Mixed refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104212414A true CN104212414A (en) | 2014-12-17 |
Family
ID=52094330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310217931.2A Pending CN104212414A (en) | 2013-06-03 | 2013-06-03 | Mixed refrigerant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104212414A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015637A1 (en) * | 1995-10-20 | 1997-05-01 | Tsinghua University | Refrigerant |
-
2013
- 2013-06-03 CN CN201310217931.2A patent/CN104212414A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015637A1 (en) * | 1995-10-20 | 1997-05-01 | Tsinghua University | Refrigerant |
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Application publication date: 20141217 |
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