CN101440330B - Polar compound for improving performance of air conditioner and refrigeration system - Google Patents
Polar compound for improving performance of air conditioner and refrigeration system Download PDFInfo
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- CN101440330B CN101440330B CN2007100472430A CN200710047243A CN101440330B CN 101440330 B CN101440330 B CN 101440330B CN 2007100472430 A CN2007100472430 A CN 2007100472430A CN 200710047243 A CN200710047243 A CN 200710047243A CN 101440330 B CN101440330 B CN 101440330B
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Abstract
The invention relates to a polar compound for improving energy efficiency of an air -conditioning and refrigerating system, which is polychlor diene short-chain alkane of which one end is polar while the other end is non-polar, and has good miscibility with various lubricating oil and refrigerants. The polar compound is applicable to the air-conditioning and refrigerating system which is new or used for a period of time and uses mineral oil, poly alpha-olefin synthetic oil, alkyl benzene and the like as the lubricating oil; the compound is a chlorinous unsaturated hydrocarbon compound containing 12 to 20 carbon atoms and 2 to 8 chlorine atoms; the new air-conditioning and refrigerating system is added with the polar compound of which the volume is 0.05 to 8 percent of that of the lubricating oil in a compressor; the old air-conditioning and refrigerating system is added with the polar compound and a carrier oil thereof of which the volume is 0.1 to 10 percent of that of the refrigerator oil in the compressor; and the carrier oil is cyclane mineral oil with a low freezing point. After the compound is added, the heat transfer efficiency of a heat exchanger is improved to certain extent, the exhaust temperature and the power consumption of the air-conditioning system are reduced, the cooling capacity is increased to certain extent, and the COP value is increased by 11.0 percent on average, thus the polar compound has certain economic benefit.
Description
Technical field
The present invention relates to a kind of polar compound that is used to improve air-conditioning and refrigeration system efficiency, more relate to old refrigeration and the removal of air handling unit heat exchange manifold oil film technology, belong to air-conditioning and refrigeration system technical field.
Background technology
As everyone knows, the function of air-conditioning and refrigeration system depends on that coercible gas is compressed and is depressurized the absorption that discharges energy in two processes at positions, hole such as valves and discharges and just is achieved in compressor.
In general, the transmission of the variation of the coercible gas pressure of said system completion energy is to realize through the phase transformation of its gaseous state to liquid.Large-scale commercial buildings such as that this air-conditioning and cooling module are used for generally that perishables preserves is freezing, refrigeration, and the commercial affairs building and the civilian installation that similarly need artificial atmosphere.
Begin the improvement that people just have been devoted to air-conditioning and refrigeration system efficient as far back as the seventies in last century; About the efficiency of air-conditioning and refrigeration system generally is the improvement of optimization design, mover and the design of other mechanical components through compressor and improving; Perhaps reduce the friction energy loss of compressor, thereby improve the efficiency of refrigeration system through the lubricated and abrasion resistance that improves compressor.Yet the demand and the space of further improving the efficiency of air-conditioning and field of refrigeration through additive method still exist.
In addition, through the air-conditioning and the refrigeration system that work long hours, decline in various degree can appear in lubricants performance; Not enough like wear resistance; And stability decreases, especially since for a long time again and again with refrigeration agent high temperature cold cycle in closed environment, make lubricating oil that polymerization can take place; Form the oil film of different thickness at the heat exchange manifold inwall; Seriously increase refrigeration agent phase transition process pipeline thermal resistance, reduced the efficient of internal and external environment transmission ofenergy, under the constant situation of the refrigeration duty of setting, increased the consumption of electric energy.Therefore, preventing and remove the existence of the interchanger oil film of air-conditioning and refrigeration system, also is the effective way of improving air-conditioning and refrigeration system efficiency.
In general, air-conditioning that uses at present and refrigeration system all are to depend on a kind of transmission by refrigeration agent and the lubricating oil energy of realizing being in different spatial of flowing of round-robin compressible substance in airtight system.Normally used refrigeration agent is generally freonll-11 family and ammonia, and ammonia generally is used for like large-scale refrigeration systems such as freezers as refrigeration agent.The selection of refrigeration agent confirms according to a series of standard that generally freonll-11 and ammonia use the most general in the commerciality building, carbonic acid gas also has application in some occasion.Lubricating oil has also played crucial effect in refrigeration system, such as in screw rod system, not only be used for cooling compressor, also is used for the sealing between the rotor.The selection of lubricating oil is based on its physical property, and like viscosity and fissility etc., the characteristic of the refrigeration agent of therewith working plays crucial effect to the efficient of refrigeration system.
Summary of the invention
The object of the present invention is to provide a kind of polar compound that is used to improve air-conditioning and refrigeration system efficiency, this polar compound synthetic polarity organic molecule one end is higher cloud density zone, and another end cloud density is then lower.This specific molecule with have good compatibility as the compressible fluid material of refrigerant and the compressor and the building material thereof of various models, the liquid state that can both maintain a long-term stability under the various operating modes that especially this material runs in compressor operating.That is to say at condensation portion and dilation to have discontinuous solid-state waxy substance to produce, and few in the amount of this material distillation of high pressure-temperature end of this system, and promptly this polar molecule has incompressibility and higher boiling point.In addition, not only this polar molecule can be compatible mutually with the various building materials of refrigeration agent and air-conditioning and refrigeration system, and can be compatible with the traditional lubrication oil phase that air-conditioning and refrigeration system are used.
For realizing above-mentioned purpose, technical scheme of the present invention is: described polar compound is liquid halogen-containing unsaturated hydrocarbon, and it is the chlorine atom that this halogen refers in particular to, and the polar group of repeatedly mentioning is many chlorine diene group.The many chlorine diene hydrocarbon boiling point that adds in air-conditioning and the refrigeration system is higher, has good compatibility with multiple refrigerator oil and refrigeration agent, and can be medium-term and long-term stable use of the refrigeration cycle of the critical operating mode of high temperature and high pressure.Because similar, human body there is not carcinogenic toxicity, so liquid many chlorine diene hydrocarbon additive also is applicable to the chilled storage refrigeration equipment and the air handling unit of food with refrigeration agent composition toxicology character.
Employed polar compound adds in air-conditioning and the refrigeration system, the liquid state that needs it in the machine works process, to maintain a long-term stability.Especially the dilation that should be noted that air-conditioning and refrigeration system is avoided generation and the blocking pipeline of coagulated substance, thereby increases maintenance and upkeep cost.
In addition, if form solid-state waxy substance then can offset the effect that polar molecule improves system energy efficiency.Usually, many chlorine of this liquid state diene polar compound contains 8-20 carbon atom and 2-8 chlorine atom.What, the size of the molecular weight of the site on this molecule and this polar compound of chloride atom have determined the volatility and the freezing point temperature of this compound together.The difference of the cloud density of the end that end that cloud density is big and cloud density are little does not need very big, as long as the electronic cloud density distribution is inhomogeneous on this molecule.The polar molecule of other chloride unsaturated hydrocarbon can use as long as polar end and non-polar end have enough moment of dipole.
The polar end of this polar molecule combines through physisorption with the metal of air-conditioning and refrigeration system.The atoms metal on the pipeline surface of air-conditioning and refrigeration system contains more unoccupied orbital; So the polar end electronics that is rich in electronics is easy to get into the unoccupied orbital of metallic surface; The quantum state energy reduces; Thereby polar group can with the atoms metal stable bond, thereby polar molecule is combined with the metallic surface, be self-assembled into the unimolecular layer of orderly nanometer grade thickness.And the non-polar end of polar compound is the short-chain fat hydrocarbon, and can have good intermiscibility with the liquid refrigerant under refrigeration oil and the low temperature, has certain flexibility, can swing along with the mixed stream of refrigeration oil and refrigeration agent.
When polar compound combines with the metallic surface, the inner fluid of pipeline can be weakened to the boundary layer flow problem that environment carries out can running in the heat exchanging process.This boundary layer flow has reduced energy transmission coefficient, thereby reduces the transfer efficiency of energy.Result of experiment also supports to use this polar molecule can reduce the influence of boundary layer flow phenomenon to transmission ofenergy significantly, and it not only can reduce the loss of energy transfer process, and can increase the surface-area of transmission ofenergy.The raising of efficiency is because this polar molecule makes the thermal conductivity of refrigeration system be increased, and has shortened the refrigeration period of refrigeration agent.Efficiency has improved, and air-conditioning and refrigeration system just can reduce power consumption significantly.
In addition, the interpolation of polar molecule can form a stabilized nano level unimolecular layer in the metallic surface, can prevent through working long hours since the oligomeric or superpolymer that the lubricating oil stability decreases produces in the metallic surface gathering formation oil film.Formed oil film with high thermal resistance for pipeline inner wall; Less its non-polar end of polar molecule is adsorbing with the metallic surface through passing oil film after the sufficiently long time mutually, thereby has become flexible sticking of oil film and metal, and oil film is replaced the most at last; Form stable unimolecular layer; Improve the transfer efficiency of energy, and can increase the area of transmission ofenergy, saved the electric energy of wasting owing to the existence of oil film.
The polar compound addition depends on that the efficiency that can improve air-conditioning and refrigeration system fully gets final product.In general, total system can't immediately take effect after the interpolation polar compound, but through one section lag time, the isopolarity compound fully is infiltrated on total system just can show its effect.The length of lag time depends on what of polar material amount of interpolation, and corresponding, the amount of polar additive depends on the scale of system and people are infiltrated on total system to this polar material speed needs.Usually the amount of this polar material is calculated by the volume of the lubricating oil of total system.
For new engine, the scope of the amount of the use of additive can be that 0.05%-8% does not wait, and recommending addition is the 0.1%-5% of lubricating oil volume; For using 3 years or longer air-conditioning or refrigeration system; Polarity refrigeration oil additive needs and uses after carrier oil mixes; The volume of polar additive is the 0.1%-10% of lubricating oil after recommending to mix; Recommend to use 0.5%-10%, wherein the usage quantity of polar material is the 0.05%-8% of lubricants capacity.Additive need and lubricate the oil phase compatibility; Can not there be chemical reaction to produce; And the addition lubricating oil that should guarantee to use with system dissolves fully and do not increase its TV, that is to say this additive add lubricating oil to after its concentration be lower than its maxima solubility.
Additive also contains the chlorine suppressor factor, prevents because the free chlorine that the existence of possibility moisture causes is overflowed system especially metallic substance such as copper and iron to be caused corrosion from component.This chlorine suppressor factor has ready-made commodity to buy, and the harmful free chlorine atom that it discharges in can articulated system reduces the existence of free chlorine in the refrigeration system.In addition; Unite a kind of suction reagent of also having of use with the chlorine suppressor factor; It can be collected and the free water of stable organic system; Thereby make free water can not produce strong acid with free chloropexia metal pipe-wall is caused corrosion and damage, both additions are the 0.1%-2% of additive TV, recommend to use 0.5%.
In order to guarantee the permanent stability of additive, be added with inhibitor in the additive and gather the agent composition with anti-, the adding proportion of this composition is the 0.1%-2% of additive TV, recommends to use 0.5%.
Additive of the present invention has long work-ing life, and and the higher compatibility of lubricating oil, (70 ℃-240 ℃) can keep liquid and have remarkable chemicalstability in awide temperature range.Up to the present, be used in reciprocating type and experiment screw-type compressor and prove that all this additive has significant effect to improving air-conditioning and refrigeration system efficiency.After in old money R22 air-conditioning machine (producing in 2002), adding certain quantity of additive, in the enthalpy difference laboratory, it is carried out performance test.Tested its performance perameters such as refrigerating duty, power and exhaust temperature, and with identical operating mode under test result when not adding additive carried out comparative analysis.
Beneficial effect of the present invention: this polar compound that is used to improve air-conditioning and refrigeration system efficiency; The heat exchanger heat transfer effect makes moderate progress after adding, and the exhaust temperature of air-conditioning system, power consumption reduce, and refrigerating duty raises to some extent; The COP value has on average increased 11.0%, and certain economic benefits is arranged.
Description of drawings
Fig. 1 is a tested machine cooling system schema of the present invention;
Fig. 2 is that polar compound of the present invention influences synoptic diagram to air-conditioning COP value;
Fig. 3 influences synoptic diagram for polar compound of the present invention to compressor exhaust temperature;
Fig. 4 is that polar compound of the present invention influences synoptic diagram to the vaporizer out temperature.
Embodiment
With reference to Fig. 1, this is a tested machine cooling system schema of the present invention.
As shown in the figure, refrigeration compressor 1, outdoor unit 2, kapillary 3, MP 4, indoor units 5, charging valve 6.The splitting heat pump air conditioner device that adopts the beautiful air-conditioning company production of GuangZhou, China is as tested machine, and model is KFR-23G/hY.This conditioner has used the time (monthly output in 2002 2) in 3 years; For the ease of measuring; Elder generation's heat exchanging device exterior washings, and then to several pressure, temperature test device are installed on the tested machine piping system, and place full-automatic enthalpy difference laboratory to test it.
For the ease of analyzing relatively, the suction and discharge pressure P of the refrigerating duty Q of conditioner, power input P, compressor when having measured adding additive front and back and additive capacity difference respectively
SO, P
Dk, temperature T
So, T
Dk, and the COP of system.Through the measurement of these points, can draw of the influence of this polar compound additive accurately to household air-conditioner.
This time of 2 months of experiment experience, during this period, conditioner has been carried out repeatedly test.Explain: Fig. 2～4 are X-coordinate with the cumulative time (h) of unit operation all; Added the 5ml additive subsequently, the random acquisition data for not adding the data of gathering before the additive in preceding 4 hours;, unit accumulative total adds additive 5ml after moving about 30 hours for the second time, subsequently random acquisition data again.
With reference to Fig. 2, this is that polar compound of the present invention influences synoptic diagram to air-conditioning COP value.
As shown in the figure, can find out that the COP (refrigerating efficiency) that adds conditioner after the polarity oil dope of the present invention obviously improves; COP 1.845 having brought up to about 2.0475 before add; Increased value is 11%, and the conditioner refrigeration is improved, and the saves energy effect is remarkable.
With reference to Fig. 3, this is that polar compound of the present invention influences synoptic diagram to compressor exhaust temperature.
As shown in the figure, can find out, add that the exhaust temperature of compressor obviously reduces after the polarity oil dope of the present invention; Never adding preceding 90 ℃ drops to about 75 ℃; Additive has improved compressor lubrication property in this presentation of results compressor, has reduced frictional dissipation, and the temperature that makes refrigeration agent get into condensing surface reduces; Thereby make the operation at a lower temperature of whole unit, improved the mechanical efficiency and the stability of unit cooler.In addition; Add after the additive Compressor Discharge Pressure increase (result is unlisted); This is because additive and refrigeration agent and compressor lubrication wet goods need the regular hour to act on fully, and along with the operation of unit, the exhaust pressure after stablizing has been compared obvious decline before with doping.
With reference to Fig. 4, this is that polar compound of the present invention influences synoptic diagram to the vaporizer out temperature.
As shown in the figure; Can find out, add polarity oil dope of the present invention after, vaporizer import and export temperature obviously reduces; Simultaneously; Temperature difference random groups accumulated running time increases gradually, and indoor air-out air obviously reduces (result is unlisted), and this exchange capability of heat that tested air conditioning evaporator is described once more significantly strengthens.
Can find out polarity oil dope of the present invention from above interpretation of result, can reduce the friction of compressor, reduce the exhaust of compressor and the temperature that vaporizer is imported and exported, increase the lubricity and the speed of refrigeration agent in pipeline of lubricating oil; Reduce the boundary layer thickness of new heat exchange manifold, effectively replace the oil film of piling up on the old exchanger tube wall, increase heat transfer efficiency; Increase the stopping property of compressor, reduce noise, therefore can prolong the work-ing life of compressor and lubricating oil, improve the efficiency and the stability of air-conditioning and refrigeration system, save energy consumption.
Claims (7)
1. polar compound that is used to improve air-conditioning and refrigeration system efficiency is characterized in that: comprise to compressor and add the liquid mixture of being made up of lubricating oil and polar compound, this polar compound is a kind of many chlorine diene short chain hydrocarbon compound;
Described many chlorine diene short chain hydrocarbon compound is a kind of many chlorine diene short chain alkanes, and refrigeration is stable liquid state in the cycle in refrigeration system, has compatibility with multiple lubricating oil and refrigeration agent.
2. the polar compound that is used to improve air-conditioning and refrigeration system efficiency according to claim 1; It is characterized in that: described many chlorine diene short chain hydrocarbon compound; Be applicable to MO, gather α-alkene synthetic oil, korenyl is the air-conditioning and the refrigeration system of lubricating oil, and refrigeration is stable liquid state in the cycle in refrigeration system.
3. the polar compound that is used to improve air-conditioning and refrigeration system efficiency according to claim 1; It is characterized in that: described many chlorine diene short chain hydrocarbon compound; Be applicable to use after for some time with MO, gather air-conditioning and the refrigeration system as lubricating oil such as α-alkene synthetic oil, korenyl, and be stable liquid state in the cycle in the refrigeration of refrigeration system.
4. the polar compound that is used to improve air-conditioning and refrigeration system efficiency according to claim 1 is characterized in that: described polar compound is a kind of chloride unsaturated hydrocarbon that contains 12-20 carbon atom, a 2-8 chlorine atom.
According to claim 1 with require the 2 described polar compounds that are used to improve air-conditioning and refrigeration system efficiency, it is characterized in that: described polar compound interpolation volume is the 0.05%-8% of the lubricating oil volume in the compressor.
According to claim 1 with require the 3 described polar compounds that are used to improve air-conditioning and refrigeration system efficiency, it is characterized in that: described polar compound and carrier oil thereof interpolation volume is the 0.1%-10% of the refrigerator oil volume in the compressor.
According to claim 3 with require the 6 described polar compounds that are used to improve air-conditioning and refrigeration system efficiency, it is characterized in that: described carrier oil is a kind of subzero naphthenic mineral oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100472430A CN101440330B (en) | 2007-10-19 | 2007-10-19 | Polar compound for improving performance of air conditioner and refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100472430A CN101440330B (en) | 2007-10-19 | 2007-10-19 | Polar compound for improving performance of air conditioner and refrigeration system |
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| CN101440330A CN101440330A (en) | 2009-05-27 |
| CN101440330B true CN101440330B (en) | 2012-11-28 |
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| CN109337578A (en) * | 2018-10-27 | 2019-02-15 | 广州领扬科技有限公司 | A kind of house ornamentation dedicated compressor Polarization Cooling film coating agent |
| CN109439156A (en) * | 2018-10-27 | 2019-03-08 | 广州领扬科技有限公司 | A kind of automobile specified compressor Polarization Cooling film coating agent |
| CN111073602A (en) * | 2019-12-05 | 2020-04-28 | 鸿蒙科技(浙江)有限公司 | Composition for improving refrigeration energy efficiency of HFO1234yf |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1626631A (en) * | 1997-10-17 | 2005-06-15 | 大金工业株式会社 | Lubricating oil for compression refrigerator and its use for cooling/air-conditioner |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1626631A (en) * | 1997-10-17 | 2005-06-15 | 大金工业株式会社 | Lubricating oil for compression refrigerator and its use for cooling/air-conditioner |
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Granted publication date: 20121128 Termination date: 20181019 |