CN107011865A - The mix refrigerant of ultra-high temperature air conditioner - Google Patents
The mix refrigerant of ultra-high temperature air conditioner Download PDFInfo
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- CN107011865A CN107011865A CN201710331891.2A CN201710331891A CN107011865A CN 107011865 A CN107011865 A CN 107011865A CN 201710331891 A CN201710331891 A CN 201710331891A CN 107011865 A CN107011865 A CN 107011865A
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- refrigerant
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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
- C09K5/044—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 halogenated compounds
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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
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/122—Halogenated hydrocarbons
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- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of mix refrigerant of ultra-high temperature air conditioner, include and the mixed non-azeotropic refrigerant being mixed to form filled by refrigerant R22, R142b, it is characterised in that：It fills mixing and includes following steps：（1）, refrigerant R22, R142b charging amount is set according to certain mass ratio respectively；（2）, first fill refrigerant R142b, refill refrigerant R22；（3）, refrigerant R22, R142b be mixed to form mixed non-azeotropic refrigerant.The present invention not only makes air-conditioning refrigeration system safe and reliable under bad working environments and stable operation, and is also equipped with good thermophysical property so that air-conditioning refrigeration system produces stable refrigerating capacity output compared with wide environmental temperature range.
Description
Technical field
The present invention relates to the mixed non-azeotropic refrigerant field for ultra-high temperature air conditioner, specifically a kind of ultra-high temperature air conditioner
Mix refrigerant.
Background technology
Ultra-high temperature air conditioner is mainly used in the special hot environments such as metallurgical, vehicle and military project, in high temperature, wide temperature change model
Enclose the thermophysical property, thermal adaptability and peace of the ultra-high temperature air conditioner that is run under (20~75 DEG C) and adverse circumstances to refrigerant
Full performance proposes higher requirement.R12, R114 refrigerant being once widely used because its environment it is unfriendly by
Prohibit the use of.R134a critical-temperature is 101 DEG C, outdoor dry-bulb temperature more than 70 DEG C, indoor 32 DEG C of dry-bulb temperature, wet bulb
The worst hot case that 23 DEG C of temperature, the condensing pressure using R134a as the high-temperature air conditioner of refrigerant is near 3.1MPa, and delivery temperature surpasses
120 DEG C are crossed, when environment temperature continues to raise, common air-conditioning compressor cannot normal work.R142b is vented under worst hot case
Pressure ratio is relatively low, but defect is that refrigerating effect per unit swept volume is small, causes the unit volume system of the high-temperature air conditioner using R142b refrigerants
Cold is small, it is necessary to larger compressor displacement and machine volume；In addition R142b combustibility and its in normal temperature air conditioning condition system
Cold performance is not good, limits the application of pure R142b refrigerants.For a long time, it is to carry out superhigh temperature sky to select suitable refrigerant
Adjust design and the important topic of Optimized Matching.
The physical parameter of several associated refrigeration agent is shown in Table 1.
The physical parameter of several associated refrigeration agent of table 1
The content of the invention
It is an object of the invention to provide a kind of mix refrigerant of ultra-high temperature air conditioner, not only make air-conditioning refrigeration system severe
Safe and reliable and stable operation under operating mode, and it is also equipped with good thermophysical property so that air-conditioning refrigeration system is in wider ring
Border temperature range, produces stable refrigerating capacity output.
Technical scheme is as follows：
A kind of mix refrigerant of ultra-high temperature air conditioner, includes and fills the non-co- being mixed to form by refrigerant R22, R142b
Boil mix refrigerant, it is characterised in that：It fills mixing and includes following steps：
(1), under same environment temperature, by the mass ratio point of refrigerant R22, R142b according to 6.6/3.4-7.0/3.0
Charging amount setting, i.e. refrigerant R22 duties are not carried out on refrigerant R22 fluorine feeding machine and the fluorine feeding machine of refrigerant R142b to adjust
The 66%~70% of refrigerant charge, refrigerant R142b accounts for the 34%~30% of air-conditioning refrigerant charging amount；
(2), air-conditioning refrigeration system is vacuumized, the charging amount then set according to step (1) first passes through refrigeration
Agent R142b fluorine feeding machine fills refrigerant R142b to air-conditioning refrigeration system, after the completion of filling, then fills fluorine by refrigerant R22
Machine fills refrigerant R22 to air-conditioning refrigeration system；
(3) after the completion of, refrigerant R22, R142b is filled respectively, refrigerant R22, R142b are carried out in air-conditioning refrigeration system
Mixing, ultimately forms mixed non-azeotropic refrigerant.
The mix refrigerant of described ultra-high temperature air conditioner, it is characterised in that：Refrigerant R22, R142b mass ratio is excellent
Select 6.6/3.4.
Beneficial effects of the present invention：
(1), refrigerant R22, R142b is HCFC refrigerants, can be nontoxic using mineral oil or POE as lubricant, is picked up
Leakage is convenient, in the case where operating condition is certain, can improve refrigeration system by adjusting refrigerant R22, R142b proportioning
The temperature characterisitic and thermal performance of system, meet different demands of the user to refrigeration.
(2), on the basis of cooling cycle system complexity is not increased, using by middle temperature refrigerant R22 and high-temperature refrigeration
The non-azeotropic refrigerant that agent R142b is mixed to form according to a certain ratio, improves ultra-high temperature air conditioner in wide temperate zone and its high-temperature region
Operation and output characteristics.
(3), by the Optimized Matching of refrigeration system, solve the adaptability of refrigeration system wide warm area operation, reliability and
The key issues such as output characteristics, it is achieved thereby that air-conditioning refrigeration system can normally freeze in 20~75 DEG C of wide warm areas, during high temperature
The maximum attenuation of refrigerating capacity is less than 15%, and keeps reliable service behaviour and stable refrigerating capacity output.
Brief description of the drawings
Fig. 1 is the flow chart that refrigerant R22, R142b of the present invention fill mixing.
Fig. 2 is T-x phasors of the R22/R142b under certain level pressure in the present invention.
Embodiment
Referring to Fig. 1, a kind of mix refrigerant of ultra-high temperature air conditioner includes by refrigerant R22, R142b filling mixing shape
Into mixed non-azeotropic refrigerant, its fill mixing include following steps：
(1), under same environment temperature, by refrigerant R22, R142b according to 6.6/3.4 mass ratio respectively in refrigeration
Charging amount setting, i.e. refrigerant R22 is carried out on agent R22 fluorine feeding machine and the fluorine feeding machine of refrigerant R142b to account for air-conditioning refrigerant and fill
The 66% of fluence, refrigerant R142b accounts for the 34% of air-conditioning refrigerant charging amount, if the charging amount of air-conditioning refrigerant is 10kg,
According to 6.6/3.4 mass ratio, refrigerant R22 charging amount is 6.6kg, and the charging amount of refrigerant R142b is 3.4kg；
(2), air-conditioning refrigeration system is vacuumized, the charging amount then set according to step (1) first passes through refrigeration
Agent R142b fluorine feeding machine fills refrigerant R142b to air-conditioning refrigeration system, after the completion of filling, then fills fluorine by refrigerant R22
Machine fills refrigerant R22 to air-conditioning refrigeration system；
(3) after the completion of, refrigerant R22, R142b is filled respectively, refrigerant R22, R142b are carried out in air-conditioning refrigeration system
Mixing, ultimately forms mixed non-azeotropic refrigerant.
Below in conjunction with Fig. 2, the present invention is further illustrated：
Refrigerant R22 belongs to middle temperature refrigerant, is widely used in air-conditioning system, in the environment of less than 50 DEG C, with good
Good air conditioner refrigerating performance；But it is when worst hot case is run, and Compressor Discharge Pressure and delivery temperature are very high, work as environment temperature
During higher than 70 DEG C, condensation thermal discharge is smaller, so that partial condensation or not condensing, the thermal performance and security performance of air-conditioning system
It is rapid to deteriorate.
It is relatively low that refrigerant R142b belongs to exhaust pressure ratio under high temperature refrigerant, worst hot case, in 70 DEG C of external environmental conditions,
Condensing pressure only has 1.26MPa, but has the disadvantage that refrigerating effect per unit swept volume is small and heat pump performance is not good near mark condition.
After refrigerant R22, R142b mixing, typical non-azeotropic refrigerant is formd, as shown in Fig. 2 mix refrigerant exists
When being undergone phase transition under level pressure, bubble point line and dew point line formation fish shape line in T-x phasors, therefore deposited in condensation and evaporation process
In temperature glide, be conducive to reducing the irreversible loss in diabatic process, the Energy Efficiency Ratio of refrigeration system improved, while refrigerant
R22 addition makes the combustibility of refrigerant R142b be inhibited, and the addition of refrigerant R142b significantly reduces compression
The pressure at expulsion and temperature of machine, are conducive to widening the operating temperature range of air conditioner, and the reliability and refrigeration for improving system are special
Property.Refrigerant R22, R142b have very strong temperature complementary, can approximately realize that Lorenz is followed in kind of refrigeration cycle after mixing
Ring, energy-saving potential is obvious.
By experiment, in analysis refrigerant R22, R142b mix refrigerant application feasibility in ultra-high temperature air conditioner system
On the basis of, heat pump performance is tested when having carried out different ratio, different filling quantities, draws to draw a conclusion：
(1), for the high-temperature air conditioner system using refrigerant R22, former refrigeration system mechanism can not be changed, directly used
Non-azeotropic refrigerant R22/R142b.
(2), using non-azeotropic refrigerant R22/R142b high-temperature refrigeration system, operating pressure and delivery temperature reduction are
Operation conditions of uniting is good, and Energy Efficiency Ratio is slightly improved relatively.
(3) refrigerating operaton performance is preferable when, refrigerant R22, R142b mass ratios are 6.6/3.4-7.0/3.0, refrigerating capacity
Decay in wider scope small, especially under worst hot case, refrigeration system is stable, the pressure at expulsion of compressor is less than
3.0MPa, delivery temperature is less than 120 DEG C, the safe range in common air-conditioning compressor.
(4), according to different types, optimal charging amount is adjusted, larger refrigerating capacity can be obtained.
Above example is not limited only to protection scope of the present invention, all basic thoughts based on the present invention and repaiied
Change or change belong to protection scope of the present invention.
Claims (2)
1. a kind of mix refrigerant of ultra-high temperature air conditioner, includes and fills the non-azeotrope being mixed to form by refrigerant R22, R142b
Mix refrigerant, it is characterised in that：It fills mixing and includes following steps：
（1）, under same environment temperature, refrigerant R22, R142b are existed respectively according to 6.6/3.4-7.0/3.0 mass ratio
Charging amount setting is carried out on refrigerant R22 fluorine feeding machine and the fluorine feeding machine of refrigerant R142b, i.e. refrigerant R22 accounts for air conditioner refrigerating
The 66% ~ 70% of agent charging amount, refrigerant R142b accounts for the 34% ~ 30% of air-conditioning refrigerant charging amount；
（2）, air-conditioning refrigeration system is vacuumized, then according to step（1）The charging amount set first passes through refrigerant
R142b fluorine feeding machine fills refrigerant R142b to air-conditioning refrigeration system, after the completion of filling, then passes through refrigerant R22 fluorine feeding machine
To air-conditioning refrigeration system filling refrigerant R22；
（3）, after the completion of refrigerant R22, R142b fill respectively, refrigerant R22, R142b are mixed in air-conditioning refrigeration system
Close, ultimately form mixed non-azeotropic refrigerant.
2. the mix refrigerant of ultra-high temperature air conditioner according to claim 1, it is characterised in that：The refrigerant R22,
The preferred 6.6/3.4 of R142b mass ratios.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331891.2A CN107011865A (en) | 2017-05-09 | 2017-05-09 | The mix refrigerant of ultra-high temperature air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710331891.2A CN107011865A (en) | 2017-05-09 | 2017-05-09 | The mix refrigerant of ultra-high temperature air conditioner |
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| CN107011865A true CN107011865A (en) | 2017-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126411A (en) * | 2020-09-30 | 2020-12-25 | 广州市快烘热泵节能设备有限公司 | Mixed refrigerant and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486893A (en) * | 2009-02-27 | 2009-07-22 | 合肥工业大学 | Mixed refrigerant suitable for high temperature environment refrigerating air-conditioning apparatus |
| CN102093848A (en) * | 2009-12-11 | 2011-06-15 | 田朝嫦 | Novel high-temperature mixed refrigerant |
| CN102578195A (en) * | 2011-01-13 | 2012-07-18 | 梧州神冠蛋白肠衣有限公司 | Mixed working medium heat pump for drying collagen casings |
| CN106566476A (en) * | 2016-10-28 | 2017-04-19 | 佛山市大芝热泵制冷设备有限公司 | Environment-friendly ternary non-azeotropic high-condensing-temperature refrigerant and filling method thereof |
-
2017
- 2017-05-09 CN CN201710331891.2A patent/CN107011865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486893A (en) * | 2009-02-27 | 2009-07-22 | 合肥工业大学 | Mixed refrigerant suitable for high temperature environment refrigerating air-conditioning apparatus |
| CN102093848A (en) * | 2009-12-11 | 2011-06-15 | 田朝嫦 | Novel high-temperature mixed refrigerant |
| CN102578195A (en) * | 2011-01-13 | 2012-07-18 | 梧州神冠蛋白肠衣有限公司 | Mixed working medium heat pump for drying collagen casings |
| CN106566476A (en) * | 2016-10-28 | 2017-04-19 | 佛山市大芝热泵制冷设备有限公司 | Environment-friendly ternary non-azeotropic high-condensing-temperature refrigerant and filling method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126411A (en) * | 2020-09-30 | 2020-12-25 | 广州市快烘热泵节能设备有限公司 | Mixed refrigerant and preparation method and application thereof |
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