CN1269391A - Power-saving environment protection type refrigerant - Google Patents

Power-saving environment protection type refrigerant Download PDF

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Publication number
CN1269391A
CN1269391A CN00107377A CN00107377A CN1269391A CN 1269391 A CN1269391 A CN 1269391A CN 00107377 A CN00107377 A CN 00107377A CN 00107377 A CN00107377 A CN 00107377A CN 1269391 A CN1269391 A CN 1269391A
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c2h4f2
refrigeration agent
propylene
weight percentage
difluorochloromethane
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CN1151228C (en
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宋炜
金小明
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ZOU GUANGNING
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ZOU GUANGNING
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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
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Abstract

An energy-saving environment-protecting type refrigerating agent is characterized by that in chlorodifluoromethane, one, two or three kinds of the following materials including propylene, 1,1 difluoroethane, propane, ethene, butane and carbon dioxide are mixed, or in 1,1 difluoroethane propane, the difluorochloroethane or ethene is mixed. The above-mentioned materials can be physically mixed according to their correspondent mixing radio. Said invention possesses direct substitution property, can save energy, protect environment, has no toxin and no corrosion to equipment, has high safety, and can be extensively used in air-conditioning and refrigeration industry.

Description

A kind of Envinonment protection type energy-saving refrigerant
The present invention relates to refrigeration agent, refer to a kind of Envinonment protection type energy-saving refrigerant especially.
In existing technology, R22, R12, R502, these outstanding refrigeration agents are widely used in central air-conditioning, domestic air conditioning, the deepfreeze refrigerating apparatus, its application is gradually improved, engineers is also understood day by day to its performance, but it also more and more causes people's worry to the destruction of atmospheric ozone layer, the Montreal Agreement book has clearly been stipulated time limit of service to it, limit its ODP value, this makes the proposition of novel refrigerant become extremely important, and it is significant for scientists to seek not only environmental protection but also refrigeration agent energy-conservation and easy to use; China is great powers in the world, and environmental protection is the responsibility that we should bear and must bear, but simultaneously China is again the country that an energy lacks, and refrigeration agent how to develop not only energy-conservation but also environmental protection is an important mission to the refrigeration engineers of China.China has added revised Montreal Protocol of nineteen ninety in June, 1991.Be the carry out earnestly international convention, State Council approved in 1993 " Chinese Ozone Depleting Substances progressively eliminate national scheme ", regulation is later than 2010 most and eliminates whole CFC in this scheme; CFC present stage substitutes and mainly contains three directions: promptly be use HCFC, HFC. or hydrocarbon polymer, HFC are exactly hydrogen fluorine carbon species, and it is HFC-134a that its typical case represents.The ODP of this material is zero.HCFC is meant the hydrochlorofluorocarazeotropic material, and its typical case's representative is R22, and its ODP equals 0.05, that is equals 5% of CFC-11.Typical case's representative of hydrocarbon polymer is Trimethylmethane R600.On the CFC substitution problem, generally place hope on the HFC refrigeration agent with the manufacturer headed by several big companies such as Dupont, especially the HFC-134a that has found out, its numbering at ASHRAE is R134a, but discovered R134a and the institute's alternate CFC refrigeration agent of wanting comparison afterwards, power consumption wants many 6～8%, and R134a has special requirement to lubricating oil, incompatible with mineral lubricating oils that is widely used in refrigeration compressor and Alkyl Benzene Lubricating Oil, this just makes that directly replacing the CFC refrigeration agent with it becomes impossiblely, and this alternative on equipment change basis is a very engineering of costliness for the refrigeration equipment owner.December 10 in 1997 end of day a global warming meeting of holding in the Tokyo that country participates in arranged more than 150, HFC is defined as one of six kinds of greenhouse gases (other five kinds are: sulfurous gas, methane, nitrogen protoxide, PFC and sulfur hexafluoride).R134a belongs to this scope just.Hydrocarbon polymer has inflammable and explosive property, produces and uses storage and transport process to have relatively high expectations, and be not suitable for China's actual conditions.
The inventor develops Envinonment protection type energy-saving refrigerant of the present invention on the basis of summing up, use, analyze a large amount of domestic and international novel refrigerants.
The purpose of this invention is to provide a kind of Envinonment protection type energy-saving refrigerant, it has directly substituting, its energy-saving and environmental protection of proof of authenticity by a series of strictnesses of national authority mechanism of this refrigeration agent, nontoxic, to the equipment non-corrodibility, safe, its energy-saving effect can guarantee that the user is issued to environmental requirement in the prerequisite of tool economic benefit, it changes the outfit easy with reliably can solve air-conditioning and high recondition expense problem that freezing industry faced.
The object of the present invention is achieved like this: the present invention is a kind of near-azeotropic polybasic mix refrigerant, and for substituting the special exploitation of R22, R12, it is applicable to the refrigeration equipment of most R22, R12 and the refrigeration equipment of a spot of R502.Comprise following 12 kinds of schemes its concrete composition:
A kind of Envinonment protection type energy-saving refrigerant, it is characterized in that this refrigeration agent be in difluorochloromethane, be mixed with in the following substances a kind of, two or three, these materials are: propylene, 1,1 C2H4F2 C2H4F2, propane, ethene, butane, carbonic acid gas, perhaps 1, be mixed with propylene and two chlorofluoroethanes or ethene in the 1-C2H4F2 C2H4F2, above-mentioned each component carries out physical mixed by its corresponding mixture ratio under liquid state.
Feature of the present invention is that also this refrigeration agent contains 1-30% propylene by weight percentage, 1,1 C2H4F2 C2H4F2 of 4-40%, the propane of 0.1-10%, the difluorochloromethane of 20-96%.
This refrigeration agent contains the propylene of 5-20% by weight percentage, the ethene of 0-10%, the difluorochloromethane of 70-95%.
This refrigeration agent contains the propylene of 2-50% by weight percentage, the difluorochloromethane of 50-98%.
This refrigeration agent contains the ethene of 1-10% by weight percentage, the difluorochloromethane of 90-99%.
This refrigeration agent contains the propylene of 3-20% by weight percentage, the difluorochloromethane of 40-95%, the carbonic acid gas of 2-20%.
This refrigeration agent contains 1 of 8-20% by weight percentage, 1-C2H4F2 C2H4F2, the difluorochloromethane of 40-92%, the carbonic acid gas of 0-20%.
This refrigeration agent contains the propylene of 0-30% by weight percentage, 1 of 5-40%, 1-C2H4F2 C2H4F2, two chlorofluoroethanes of 0-40%, the difluorochloromethane of 5-95%.
This refrigeration agent contains the propylene of 3-30% by weight percentage, two chlorofluoroethanes of 2-40%, the difluorochloromethane of 30-95%.
This refrigeration agent contains the propylene of 20-30% by weight percentage, 1 of 20-50%, 1-C2H4F2 C2H4F2, two chlorofluoroethanes of 1-60%.
This refrigeration agent contains the propylene of 20-40% by weight percentage, 1 of 50-80%, 1-C2H4F2 C2H4F2, two chlorofluoroethanes of 1-30%.
This refrigeration agent contains the propylene of 20-50% by weight percentage, 1 of 50-80%, 1-C2H4F2 C2H4F2, the ethene of 0-10%.
Propane among the present invention (R290), molecular formula CH 3CH 2CH 3, standard atmosphere is depressed boiling point-42.12 ℃, critical temperature: 96.8 ℃, and emergent pressure 4.25MP, relative density (air) 1.56;
1,1-C2H4F2 C2H4F2 (R152a), molecular formula CHF 2-CH 3, standard atmosphere is depressed boiling point-25.0 ℃, critical temperature: 113.5 ℃, and emergent pressure 4.5MP, relative density (air) 2.28;
Propylene (R1270), molecular formula C 3H 6, standard atmosphere is depressed boiling point-47.6 ℃, critical temperature: 91.1 ℃, and emergent pressure 4.62MP, relative density (air) 1.48;
Difluorochloromethane (R22), molecular formula CHClF 2, standard atmosphere is depressed boiling point-40.8 ℃, critical temperature: 96.0 ℃, and emergent pressure 4.92MP;
Two chlorofluoroethanes (R142b), molecular formula CH 3CClF 2, standard atmosphere is depressed boiling point-9.25 ℃, critical temperature: 136.45 ℃, and emergent pressure 4.116MP;
Ethene (R1150), molecular formula CH 2CH 2, standard atmosphere is depressed boiling point-103.08 ℃, critical temperature: 9.33 ℃, and critical pressure 5.04MP;
Carbonic acid gas, molecular formula CO 2, standard atmosphere is depressed boiling point-78.5 ℃, critical temperature: 31 ℃, and emergent pressure 7.39MP;
Refrigeration agent of the present invention, its preparation method are exactly above-mentioned each component to be carried out the physical mixed can by its corresponding mixture ratio get final product under liquid state.
Come energy-saving effect of the present invention with two concrete experimental example explanations below.
Example one: refrigeration agent R300a of the present invention is (by 70% difluorochloromethane, 20% C2H4F2 C2H4F2,9% propylene, 1% propane is formed), big power test center shows for SC850001 number according to big cold examination word Japanese SANYO IQF case (the former refrigeration agent R502 that uses) in Taiwan, under 35 ℃ of equal envrionment temperatures, in the thermal equilibrium laboratory, use two kinds of different working medium, unit operation one day, test current consumption situation, current consumption is 18.22 degree/skies when using former working medium R502, use that current consumption is 15.9 degree behind the working medium R300a of the present invention, day reducing power consumption 12.7%.
Example two: in Shanghai general petrochemicals factory Wuhan Refrigerator Plant is produced the LSLCF34 handpiece Water Chilling Units and changes the outfit, behind the refrigeration agent of the present invention with former reflect when comparing test with working medium R22 as follows:
1, test process
1. operation is used the unit of R22 and is read basic data
2. evacuation system
3. new working medium is annotated place system
4. adjust (expansion valve)
5. move new working medium and reading of data, as a comparison
2, explanation:
Test is carried out under the certain situation of discharge, and the flow identification is by water meter identification that the user was equipped with.
3, data logging
The refrigeration agent kind R22 (the former working medium of using) The present invention's (new working medium)
Test duration 3 hours 3 hours
Envrionment temperature ??18.9℃ ??18.8℃
The compressor air suction temperature ??5.9℃ ??5.0℃
The vaporizer return water temperature ??6.5℃ ??5.2℃
The vaporizer leaving water temperature(LWT) ??9.5℃ ??8.9℃
Power of motor (single-phase) ??26.0kw ??26.4kw
(annotate: the new working medium of the invention described above is: 75% difluorochloromethane, 15% C2H4F2 C2H4F2-9% propylene, 1% propane.)
The refrigerating duty increased value:
Refrigerating duty Q=((specific heat at constant pressure of water) * M (quantity of circulating water) * Δ T (the import and export water temperature difference of vaporizer)
Figure A0010737700071
Figure A0010737700081
Energy Efficiency Ratio improvement value (energy-conservation) Energy Efficiency Ratio Cop=Q/W=refrigerating duty/power of motor
Figure A0010737700082
Figure A0010737700084
=21.5%
In sum, Envinonment protection type energy-saving refrigerant of the present invention is compared with existing R12, R22, R502 and is had following characteristics:
1. environment aspect---do not contain CFC.ODP (depletion of the ozone layer coefficient), GWP (global warming potential) all are lower than China national Environmental Protection Agency, American National Environmental Protection Agency specified standards.
2. healthy, secure context---nontoxic.
3. compatible aspect---very approaching with existing R12, R22, R502 refrigeration agent character, scheme one to eight need not to change original lubricating oil, and compressor need not redesign, need not to change original refrigeration equipment.
4. chemical stability and thermostability aspect---good, during use and the consistency of material good, in use find no the corroding metal phenomenon, with lubricating oil and other compounds any reaction does not take place, with lubricating oil good affinity is arranged, the good insulating of steam.
5. the energy-saving index aspect---Energy Efficiency Ratio meets or exceeds original index, refrigerant applications of the present invention is when using the refrigeration equipments such as central air-conditioning of R22 refrigeration agent, its Energy Efficiency Ratio index is apparently higher than original R22 refrigeration agent (5～28%), promptly under the identical situation of consumed power, use its refrigerating duty of refrigeration equipments such as central air-conditioning of refrigeration agent of the present invention obviously to improve; This refrigeration agent contrasts R22 under various air conditioning conditions all have remarkable energy saving effect.
6. the quality product aspect---target level of product quality is higher than state-set standard.
7. the process that changes the outfit aspect---the refrigeration agent process that changes the outfit is very simple, reads explanation and can operate.
Below further specify for several embodiment again.
＜embodiment one 〉
By weight percentage, 10% propylene, 10% C2H4F2 C2H4F2,1% propane, 79% difluorochloromethane uniform mixing.
＜embodiment two 〉
By weight percentage, 15% propylene, 1% ethene, 84% difluorochloromethane uniform mixing.
＜embodiment three 〉
By weight percentage, 28% propylene, 72% difluorochloromethane uniform mixing.
＜embodiment four 〉
By weight percentage, 3% carbonic acid gas, 17% C2H4F2 C2H4F2,80% difluorochloromethane uniform mixing.
＜embodiment five 〉
By weight percentage, 15% propylene, 5% carbonic acid gas, 80% difluorochloromethane uniform mixing.
＜embodiment six 〉
By weight percentage, 8% C2H4F2 C2H4F2,5% carbonic acid gas, 87% difluorochloromethane uniform mixing.
＜embodiment seven 〉
By weight percentage, 15% propylene, 30% C2H4F2 C2H4F2,15% 2 chlorofluoroethane, 40% difluorochloromethane uniform mixing.
＜embodiment eight 〉
By weight percentage, 25% propylene, 35% C2H4F2 C2H4F2,40% difluorochloromethane uniform mixing.
＜embodiment nine 〉
By weight percentage, 25% propylene, 35% C2H4F2 C2H4F2,40% 2 chlorofluoroethane uniform mixing.
＜embodiment ten 〉
By weight percentage, 20% propylene, 60% C2H4F2 C2H4F2,20% 2 chlorofluoroethane uniform mixing.
＜embodiment 11 〉
By weight percentage, 35% propylene, 60% C2H4F2 C2H4F2,5% ethane uniform mixing.
＜embodiment 12 〉
By weight percentage, 10% propylene, 10% C2H4F2 C2H4F2,0.1% propane, 79.9% 2 chlorofluoroethane uniform mixing.
＜embodiment 13 〉
By weight percentage, 45% propylene, 55% C2H4F2 C2H4F2 uniform mixing.
Prepared refrigeration agent test data in HR-30 piston handpiece Water Chilling Units among above-mentioned 13 embodiment is listed in accompanying " table one ", and comparative example is existing R22 refrigeration agent.
By " table one " as can be seen, after using mix refrigerant of the present invention, in R22 system applies scope, refrigerating duty all has raising in various degree, Energy Efficiency Ratio all has raising in various degree, illustrates that the present invention can obtain good energy-saving effect, again since in the refrigeration agent of the present invention the difluorochloromethane consumption reduce or do not have difluorochloromethane at all, so the destructiveness to ozonosphere also reduces, and can be described as the energy-saving and environmental-friendly refrigeration agent.
＜embodiment 14 〉
By weight percentage, 2% propylene, 35% C2H4F2 C2H4F2,1% propane, 62% difluorochloromethane uniform mixing are made refrigeration agent of the present invention, under the design conditions of BJS-1000 refrigerated tank, measure the thermal property of above-mentioned refrigeration agent, that is measured the results are shown in table two.
Table two
By table two as can be seen, use refrigeration agent of the present invention after, refrigerated tank current consumption reduces, this refrigeration agent has energy-saving effect.Thermal property and R12 ten minutes are approaching, need not change the design of original R12 refrigeration system.Lubricating oil need not change, and has direct dabbling characteristics.Aspect environmental protection, be 3% of R12 to the atmosphere rupture factor, rupture factor reduces greatly.
Table one
Figure A0010737700121

Claims (12)

1, a kind of Envinonment protection type energy-saving refrigerant, it is characterized in that this refrigeration agent be in difluorochloromethane, be mixed with in the following substances a kind of, two or three, these materials are: propylene, 1,1 C2H4F2 C2H4F2, propane, ethene, butane, carbonic acid gas, perhaps 1, be mixed with propylene and two chlorofluoroethanes or ethene in the 1-C2H4F2 C2H4F2, above-mentioned each component carries out physical mixed by its corresponding mixture ratio under liquid state.
2, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains 1-30% propylene by weight percentage, 1,1 C2H4F2 C2H4F2 of 4-40%, the propane of 0.1-10%, the difluorochloromethane of 20-96%.
3, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 5-20% by weight percentage, the ethene of 0-10%, the difluorochloromethane of 70-95%.
4, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 2-50% by weight percentage, the difluorochloromethane of 50-98%.
5, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the ethene of 1-10% by weight percentage, the difluorochloromethane of 90-99%.
6, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 3-20% by weight percentage, the difluorochloromethane of 40-95%, the carbonic acid gas of 2-20%.
7, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains 1 of 8-20% by weight percentage, 1-C2H4F2 C2H4F2, the difluorochloromethane of 40-92%, the carbonic acid gas of 0-20%.
8, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 0-30% by weight percentage, 1 of 5-40%, 1-C2H4F2 C2H4F2, two chlorofluoroethanes of 0-40%, the difluorochloromethane of 5-95%.
9, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 3-30% by weight percentage, two chlorofluoroethanes of 2-40%, the difluorochloromethane of 30-95%.
10, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent of this refrigeration agent contains the propylene of 20-30% by weight percentage, 1 of 20-50%, 1-C2H4F2 C2H4F2, two chlorofluoroethanes of 1-60%.
11, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 20-40% by weight percentage, 1 of 50-80%, 1-C2H4F2 C2H4F2, two chlorofluoroethanes of 1-30%.
12, Envinonment protection type energy-saving refrigerant according to claim 1 is characterized in that this refrigeration agent contains the propylene of 20-50% by weight percentage, 1 of 50-80%, 1-C2H4F2 C2H4F2, the ethene of 0-10%.
CNB00107377XA 2000-05-10 2000-05-10 power-saving environment protection type refrigerant Expired - Fee Related CN1151228C (en)

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CN1151228C CN1151228C (en) 2004-05-26

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