CN105885797A - Incombustible mixed refrigerant suitable for -50 to -70 DEG C temperature range of refrigeration - Google Patents
Incombustible mixed refrigerant suitable for -50 to -70 DEG C temperature range of refrigeration Download PDFInfo
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- CN105885797A CN105885797A CN201410462213.6A CN201410462213A CN105885797A CN 105885797 A CN105885797 A CN 105885797A CN 201410462213 A CN201410462213 A CN 201410462213A CN 105885797 A CN105885797 A CN 105885797A
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Abstract
The invention relates to an incombustible mixed refrigerant suitable for the -50 to -70 DEG C temperature range of refrigeration. A first refrigerant is R245Fa (pentafluoropropane) or R236Fa (hexafluoropropane); a second refrigerant is R125 (pentafluoroethane) or R32 (difluoromethane) or R507; a third refrigerant is R23 (trifluoromethane); and a fourth refrigerant is R14 (carbon tetrafluoride). The total molar concentration of the four refrigerants is 100%. The invention has the following beneficial effects: the incombustible mixed refrigerant suitable for the -50 to -70 DEG C temperature range of refrigeration has a simple system and reliable performance, and is nontoxic, environmentally friendly and incombustible; the refrigerants are all commercially available, are convenient to purchase and are low-cost; and the product is more convenient for maintenance technicians to operate.
Description
Technical field
The present invention relates to field of refrigeration, specifically one is applicable to-50 degree～-70 degree refrigeration temperature
The non-combustible mix refrigerant in district.
Background technology
Along with development and the progressive raising of science and technology of society, biological engineering, medicine medical science, the energy, communication
And the high speed development of the high-tech area such as military project, for-50 degree～the need of the refrigeration product of-70 degree warm areas
Get more and more.Traditional single-stage compression refrigeration system cannot realize-50 degree～-70 degree warm areas, refrigeration system
When system runs, the pressure ratio of compressor must be smaller than 12.When ambient temperature determines, refrigeration system is used
Cold-producing medium just has determined that, simultaneously corresponding to compressor condensation temperature, condensing pressure (pressure at expulsion)
Reaching the warm area of-50 degree, the cold-producing medium that traditional single-stage compression refrigeration system is used is: R404A,
R507, R22, R290, then in whole refrigeration system running, the pressure ratio of compressor is more than 15.System
Cooling system is when the pressure ratio more than 12 is run, it will causing excessive discharge temperature, pressure at expulsion is too high, pressure
Contracting machine temperature is too high, can cause overload of compressor, and compressor such as burns at the fault, will make whole refrigeration system
Cannot run.And generally to realize-50 degree～the low temperature of-70 degree, it is necessary to use the system of cascade refrigeration circulation
Cooling system, the refrigeration system of overlapping also exists refrigeration system complexity, poor reliability, maintenance difficult, maintenance
The shortcomings such as cost is high, power consumption is serious.Prior art such as U.S. Patent Publication No. CN1388887A refrigeration is
In system, mix refrigerant has use argon (Ar) or nitrogen；The mix refrigerant illustrated is totally different from this
The mix refrigerant of invention；The whole process of refrigerastion of this patent uses four heat exchangers three to be separated simultaneously
Device whole system structure is complicated, production and processing technology very loaded down with trivial details, also has a domestic patent at present
CN1460703A, its use warm area (200K～240K), with the mix refrigerant (-50 of the present invention
Degree～-70 degree) warm area has common factor.But the cryogen kind used is the most different；This is special simultaneously
Profit also exists many problems in actual utilization and production process；The six kinds of systems made in this patent
Cryogen composition is entirely combustible refrigerant.
Summary of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art, it is provided that one is applicable to-50
Degree～the non-combustible mix refrigerant of-70 degree refrigeration temperature area, the present invention solves the skill that its technical problem is used
Art scheme is: be mainly made up of four class cold-producing mediums: the first kind is R245Fa (pentafluoropropane) or R236Fa (six
Fluoro-propane)；Equations of The Second Kind is R125 (pentafluoroethane) or R32 (difluoromethane) or R507；3rd class
For R23 (fluoroform)；4th class is R14 (carbon tetrafluoride).The total sum of molar concentration of four kinds of cold-producing mediums
Being 100%, shared by each of which, molar concentration ratio scope is:
15%～55% of total mol concentration shared by first kind cold-producing medium
10%～35% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 13%～35% of total mol concentration
Shared by 4th class cold-producing medium the 2%～15% of total mol concentration
Four class cold-producing mediums according to molar ratio, carry out physical mixed under isoperibol, both can obtain mixing system
Cryogen.Use this mix refrigerant can reach-50 degree～-70 degree with the operation temperature area of refrigeration system.This mixes
Close cold-producing medium and have good intersolubility with the lubricating oil in system, thus reduce system and oil occurs when low temperature
Stifled fault；This mix refrigerant ODP is zero, and used base stock is American-European and the most most
The cold-producing medium of environmental protection the most that number country generally acknowledges, makes user be fully achieved non-combustible, economy, environmental protection, system
The multiple demands such as simple and reliable property is high.
For in terms of kind of refrigeration cycle, above-mentioned various cold-producing mediums play and different do use.The first kind is freezed
The effect of agent ensures that compressor exhaust temperature is in normal working range；Equations of The Second Kind, the 3rd class cold-producing medium are in system
Cooling system plays cooling and the effect of cooling the 4th class；3rd class chiller refrigeration agent is groundwork material；
The effect pressure ratio when low temperature of the evaporating pressure of raising system, reduction system of the 4th class cold-producing medium, improve whole
The COP of individual refrigeration system.The concrete proportioning of each warm area:
1, be applicable to-50 degree warm areas:
15%～25% of total mol concentration shared by first kind cold-producing medium
10%～35% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 10%～35% of total mol concentration
Shared by 4th class cold-producing medium the 3%～5% of total mol concentration
2, be applicable to-60 degree warm areas:
25%～30% of total mol concentration shared by first kind cold-producing medium
16%～15% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 26%～33% of total mol concentration
Shared by 4th class cold-producing medium the 5%～9% of total mol concentration
3, be applicable to-70 degree warm areas:
25%～30% of total mol concentration shared by first kind cold-producing medium
16%～15% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 20%～25% of total mol concentration
Shared by 4th class cold-producing medium the 8%～15% of total mol concentration
The invention has the beneficial effects as follows, the invention provides one and be applicable to-50 degree～-70 degree refrigeration temperature area
Non-combustible mix refrigerant, system is simple, and dependable performance, simple in construction, compared with cascade refrigeration system
Refrigeration part has subtracted 1/3, and system jam rate is substantially reduced, the most more Gao Xinggao, and refrigeration system runs work
Condition can be with commercial screw compressor or air-conditioning rotary compressor, and price is low, and coefficient of refrigerating performance is high, when producing-70
During the low temperature spent, the evaporating pressure of compressor is 0.35MPa～0.38MPa (is and spends absolutely pressure), two-stage pressure
When contracting overlapping machine system produces the low temperature of-70 degree, evaporating pressure is 0.1MPa, and the present invention makes the pressure of refrigeration system
The specific work that contracting machine is done substantially increases, and obtainable bigger more refrigerating capacity, COP can be than overlapping machine
System improves 2-3 times, and mix refrigerant is nontoxic, environmental protection, non-combustible, ODP coefficient are that 0 consumption ozone is latent
Can be worth ODP the least, cold-producing medium more meets environmental requirement, and the cryogen in mix refrigerant of the present invention is all,
Meet the standard of Environmental Protection in America tissue EPA, SNAP and UL, meet the A1 safety of (ASHRAE)
Graded category, workable, popular on all market of cold-producing medium of present invention cold-producing medium, purchaser
Just, price is cheaper；So convenient, maintenance technician carries out behaviour and does.
Accompanying drawing explanation
The unit compression cooling cycle system schematic diagram of Fig. 1: the embodiment of the present invention
In figure: compressor 1, oil eliminator 2, condenser 3, device for drying and filtering 4, heat exchanger 5, capillary
Pipe 6, vaporizer 7, expansion vessel 8.
Detailed description of the invention
Preparing unit compression refrigerating system-50 degree～the mix refrigerant of-70 degree warm areas, it includes following four
Class cold-producing medium: the first kind is R245Fa (pentafluoropropane) or R236Fa (HFC-236fa)；Equations of The Second Kind is
R125 (pentafluoroethane) or R32 (difluoromethane) or R507；3rd class is R23 (fluoroform)；
4th class is R14 (carbon tetrafluoride)
Embodiment 1: configuration uses the mix refrigerant at-50 degree warm areas；Each class cold-producing medium molar concentration
As follows:
The first kind: R245Fa accounts for the 15% of total mol concentration, and R236Fa accounts for the 20% of total mol concentration
Equations of The Second Kind: R125 accounts for the 35% or R32 of total mol concentration and accounts for the 35% or R507 of total mol concentration
Account for the 35% of total mol concentration
3rd class: R23 accounts for the 24% of total mol concentration
4th class: R14 accounts for the 6% of total mol concentration
Operational factor is: condensation temperature 35 degree, and cryogenic temperature is-50 degree, pressure at expulsion 1.83MPa, evaporation
Pressure 0.4MPa, the delivery temperature of compressor 108 degree.
Embodiment 2: configuration uses the mix refrigerant at-60 degree warm areas；Each class cold-producing medium molar concentration
As follows:
The first kind: R245Fa accounts for the 20% of total mol concentration, and R236Fa accounts for the 15% of total mol concentration
Equations of The Second Kind: R125 accounts for the 25% or R32 of total mol concentration and accounts for the 25% or R507 of total mol concentration
Account for the 25% of total mol concentration
3rd class: R23 accounts for the 34% of total mol concentration
4th class: R14 accounts for the 6% of total mol concentration
Operational factor is: condensation temperature 35 degree, and cryogenic temperature is-60 degree, pressure at expulsion 1.73MPa, evaporation
Pressure 0.35MPa, the delivery temperature of compressor 103 degree.
Embodiment 3: configuration uses the mix refrigerant at-70 degree warm areas；Each class cold-producing medium molar concentration
As follows:
The first kind: R245Fa accounts for the 15% of total mol concentration, and R236Fa accounts for the 20% of total mol concentration
Equations of The Second Kind: R125 accounts for the 25% or R32 of total mol concentration and accounts for the 25% or R507 of total mol concentration
Account for the 25% of total mol concentration
3rd class: R23 accounts for the 24% of total mol concentration
4th class: R14 accounts for the 16% of total mol concentration
Operational factor is: condensation temperature 35 degree, and cryogenic temperature is-70 degree, pressure at expulsion 1.60MPa, evaporation
Pressure 0.3MPa, the delivery temperature of compressor 102 degree.
Embodiment described above is only to be described the preferred embodiment of the present invention, not to this
The spirit and scope of invention are defined, on the premise of without departing from design concept of the present invention, in this area
Various modification that technical scheme is made by ordinary skill technical staff and improvement, all should fall into this
The protection domain of invention, the technology contents that the present invention is claimed, the most all it is documented in claims
In.
Claims (4)
1. the non-combustible mix refrigerant being applicable to-50 degree～-70 degree refrigeration temperature area, it is characterised in that be made up of four class cold-producing mediums: the first kind is R245Fa (pentafluoropropane) or R236Fa (HFC-236fa)；Equations of The Second Kind is R125 (pentafluoroethane) or R32 (difluoromethane) or R507；3rd class is R23 (fluoroform)；4th class is R14 (carbon tetrafluoride).The total sum of molar concentration of four kinds of cold-producing mediums is 100%, and shared by each of which, molar concentration ratio scope is:
15%～55% of total mol concentration shared by first kind cold-producing medium
10%～35% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 13%～35% of total mol concentration
Shared by 4th class cold-producing medium the 2%～15% of total mol concentration.
The most according to claim 1 a kind of be applicable to-50 degree～-70 degree refrigeration temperature area non-combustible mix refrigerant, it is characterised in that be applicable to-50 degree warm areas:
15%～25% of total mol concentration shared by first kind cold-producing medium
10%～35% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 10%～35% of total mol concentration
Shared by 4th class cold-producing medium the 3%～5% of total mol concentration.
The most according to claim 1 a kind of be applicable to-50 degree～-70 degree refrigeration temperature area non-combustible mix refrigerant, it is characterised in that be applicable to-60 degree warm areas:
25%～30% of total mol concentration shared by first kind cold-producing medium
16%～15% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 26%～33% of total mol concentration
Shared by 4th class cold-producing medium the 5%～9% of total mol concentration.
The most according to claim 1 a kind of be applicable to-50 degree～-70 degree refrigeration temperature area non-combustible mix refrigerant, it is characterised in that be applicable to-70 degree warm areas:
25%～30% of total mol concentration shared by first kind cold-producing medium
16%～15% of total mol concentration shared by Equations of The Second Kind cold-producing medium
Shared by 3rd class cold-producing medium the 20%～25% of total mol concentration
Shared by 4th class cold-producing medium the 8%～15% of total mol concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462213.6A CN105885797A (en) | 2014-09-07 | 2014-09-07 | Incombustible mixed refrigerant suitable for -50 to -70 DEG C temperature range of refrigeration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462213.6A CN105885797A (en) | 2014-09-07 | 2014-09-07 | Incombustible mixed refrigerant suitable for -50 to -70 DEG C temperature range of refrigeration |
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| CN105885797A true CN105885797A (en) | 2016-08-24 |
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| CN201410462213.6A Pending CN105885797A (en) | 2014-09-07 | 2014-09-07 | Incombustible mixed refrigerant suitable for -50 to -70 DEG C temperature range of refrigeration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586009A (en) * | 2014-10-29 | 2016-05-18 | 张永康 | Inflammable mixture refrigerant being suitable at refrigerating temperature zone of -75 - -105 DEG C |
| CN110028937A (en) * | 2019-04-26 | 2019-07-19 | 中国科学院理化技术研究所 | A kind of non-combustible cool storage medium of mixing |
| CN112004907A (en) * | 2018-04-19 | 2020-11-27 | 大金工业株式会社 | Refrigerant-containing composition and use thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388887A (en) * | 2000-06-28 | 2003-01-01 | Igc珀利克尔德系统公司 | Nonflammable mixed refrigerants (MR) for use with very low temperature throttle-cycle refrigeration systems |
| CN1789367A (en) * | 2005-12-09 | 2006-06-21 | 西安交通大学 | Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator |
| CN102559146A (en) * | 2010-12-17 | 2012-07-11 | 中科赛凌（北京）科技有限公司 | Non-combustible mixing refrigerant suitable for deep refrigeration temperature of minus 80 DEG C to minus 100 DEG C |
| CN102618220A (en) * | 2011-01-26 | 2012-08-01 | 龙志刚 | Mixed refrigerant suitable for 120-150K cryogenic temperature region |
| CN102660229A (en) * | 2012-04-26 | 2012-09-12 | 中科赛凌（北京）科技有限公司 | Incombustible mixed refrigerant suitable for copious cooling temperature of 90-140DEG C below zero |
-
2014
- 2014-09-07 CN CN201410462213.6A patent/CN105885797A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388887A (en) * | 2000-06-28 | 2003-01-01 | Igc珀利克尔德系统公司 | Nonflammable mixed refrigerants (MR) for use with very low temperature throttle-cycle refrigeration systems |
| CN1789367A (en) * | 2005-12-09 | 2006-06-21 | 西安交通大学 | Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator |
| CN102559146A (en) * | 2010-12-17 | 2012-07-11 | 中科赛凌（北京）科技有限公司 | Non-combustible mixing refrigerant suitable for deep refrigeration temperature of minus 80 DEG C to minus 100 DEG C |
| CN102618220A (en) * | 2011-01-26 | 2012-08-01 | 龙志刚 | Mixed refrigerant suitable for 120-150K cryogenic temperature region |
| CN102660229A (en) * | 2012-04-26 | 2012-09-12 | 中科赛凌（北京）科技有限公司 | Incombustible mixed refrigerant suitable for copious cooling temperature of 90-140DEG C below zero |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586009A (en) * | 2014-10-29 | 2016-05-18 | 张永康 | Inflammable mixture refrigerant being suitable at refrigerating temperature zone of -75 - -105 DEG C |
| CN112004907A (en) * | 2018-04-19 | 2020-11-27 | 大金工业株式会社 | Refrigerant-containing composition and use thereof |
| CN112004907B (en) * | 2018-04-19 | 2022-03-29 | 大金工业株式会社 | Refrigerant-containing composition and use thereof |
| CN110028937A (en) * | 2019-04-26 | 2019-07-19 | 中国科学院理化技术研究所 | A kind of non-combustible cool storage medium of mixing |
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Application publication date: 20160824 |
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