CN100489417C - Sodium sulfocyanate-ammonia diffusion absorbing refrigerator - Google Patents
Sodium sulfocyanate-ammonia diffusion absorbing refrigerator Download PDFInfo
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- CN100489417C CN100489417C CNB2007100654123A CN200710065412A CN100489417C CN 100489417 C CN100489417 C CN 100489417C CN B2007100654123 A CNB2007100654123 A CN B2007100654123A CN 200710065412 A CN200710065412 A CN 200710065412A CN 100489417 C CN100489417 C CN 100489417C
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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Abstract
It's a kind of ammonia-sodium thiocyanate diffusion-absorption refrigerating installation that belongs to refrigeration technology trade, which can be used in fishing vessels, cold storages, refrigerated cars and all occasions needing to refrigerate. In existing devices, some devices only can made and fetch the temperature above zero degree, which makes its application range limited; some devices need rectification device, their refrigerating output is less and it's difficult to be used in the occasions with great demand of refrigeration. The invention includes generator (1), condenser (3), absorber (5), evaporator (7), pump (8) and solution heat exchanger (9). They connect each other and form a complete circulation loop. Solution is separated in gas-liquid separator (2), and is heated in the solution heat exchanger (9); dispersal tank (6) connects evaporator (7) to form a closed loop through pump (8) at the bottom of it, and connects respectively the upper end and the lower end of the absorber (5) in order to make ammonia solution absorb the ammonia smoothly in the diffusion effect of hydrogen. The equipment's structure is compact, it can satisfy different demand of refrigerating output and has a good application prospect.
Description
Technical field:
Belong to the Refrigeration Technique industry, be applied to ocean fishing vessel, cargo ship and occasion that all need freeze.Can in fishing boat ice machine, air conditioning for automobiles, freezer, refrigerator car and military affairs, use.
Background technology:
Artificial cooling was born over more than 100 year, and thermal refrigerating mainly is absorption refrigeration.Common absorption refrigeration mode has three kinds at present: lithium bromide water absorption type, ammonia water absorbing, ammonia hydrogen water absorption-diffusion type.
Refrigeration system with lithium bromide absorption is that research is more a kind of, but can only produce above zero temperature because of it, so the scope of application often is confined on the air-conditioning, and corrosivity is stronger.
Ammonia absorption type refrigeration is the founder of artificial cooling, the artificial cooling field is to have ammoniacal liquor absorption refrigeration that compression refrigeration is just arranged earlier, but because the working medium of this system is to being water and ammonia, water evaporation when heating, ammonia also evaporates, and has reduced the thermal efficiency, needs rectifier unit simultaneously, increase equipment investment and energy consumption, also limited the raising of refrigerating efficiency simultaneously.It also needs booster pump in addition, and power consumption is bigger, so demand incompatible energy-conservation at present, the refrigeration situation.
Ammonia hydrogen water diffusion absorbing refrigeration has added diffusant-hydrogen on the basis of ammoniacal liquor system, its basic procedure enters the concentrated solution process heating of generator 1 as shown in Figure 2, and wherein gaseous state enters into rectifier 10, and liquid state passes back into generator 1.The gaseous ammonia that comes out from rectifier 10 is through condenser 3 condensations, and is cold again through gas heat-exchanger 11, enters evaporimeter 7.In evaporimeter 7,, facilitated the rapid sweat cooling of ammonia owing to the influence of hydrogen.The ammonia hydrogen water gaseous mixture that is come out by evaporimeter 7 enters absorber 5 after gas heat-exchanger 11 heating.The weak solution of coming out from generator 1 also enters absorber 5 after solution heat exchanger 9 is cooled, liquor ammoniae dilutus absorbs ammonia after after solution heat exchanger 9 preheatings, flow into generator 1 again in absorber 5.So constitute circulation.Therefore this systematic working medium must be provided with rectifier unit to still adopting ammonia and water, owing to utilize siphon-pump to circulate, refrigerating capacity is generally less simultaneously, and refrigerating efficiency (COP) is generally 0.4～0.5, is difficult to use in the refrigerating capacity occasions with great demand.
Summary of the invention:
The purpose of this invention is to provide a kind of novel diffusion absorbing refrigerator, it is right as refrigeration working medium with sodium sulfocyanate-ammonia, can produce sub-zero temperature and save rectifier unit simultaneously, it has lower heat source temperature just can satisfy the requirement of drive system and can reach higher refrigerating efficiency (COP), except can being applied to air-conditioning system, also can be applied at aspects such as freezer, ice making equipments.To the place of geothermal source, waste heat source is arranged, can directly utilize these heats to reach the purpose of refrigeration.
Sodium sulfocyanate-ammonia solution has high solubility, lower vapour pressure, high thermal conductivity, lower viscosity and specific heat, and steel are not had corrosion, is that a kind of comparatively desirable absorption refrigeration working medium is right.Sodium sulfocyanate-ammonia is used to spread absorbent refrigeration system, because the boiling point of ammonia and sodium sulfocynanate differs greatly, the gas phase of solution can be thought 100% ammonia, then can remove rectifier unit from.And theory analysis shows that the performance of sodium sulfocyanate-ammonia diffusion absorption system is better than traditional ammonia hydrogen water system.
Sodium sulfocyanate-ammonia diffusion absorbing refrigerator comprises generator 1, condenser 3, absorber 5, evaporimeter 7, pump 8 and solution heat exchanger 9, as shown in Figure 1, generator 1 other end is connected with solution heat exchanger 9, gas-liquid separator 2 tops link to each other with diffusion jar 6 tops through condenser 3, gas-liquid separator 2 bottoms link to each other with pump 8 by solution heat exchanger 9, diffusion jar 6 bottoms are by another pump 8, evaporimeter 7 is connected to form loop with diffusion jar 6 tops, and diffusion jars 6 is communicated with respectively with absorber 5 upper and lower sides, absorber 5 bottoms are through pump 8, cooler 4 and absorber 5 tops are connected to form the loop of circulation, and absorber 5 is connected with solution heat exchanger 9 through pump 8 again simultaneously.
This device flow process is: in generator 1 behind the ebuillition of heated, the liquor ammoniae fortis that has a large amount of ammonias separates in gas-liquid separator 2, wherein ammonia is evaporated in a large number and enters condenser 3 condensations, and the liquor ammoniae fortis after separating becomes liquor ammoniae dilutus and flows out from gas-liquid separator 2 bottoms, mixes by the solution heat exchanger 9 and the liquor ammoniae fortis of coming from absorber 5 bottoms.Mixed solution is through being divided into two parts behind the magnetic drive pump 8: a part absorbs ammonia after quilt is sprayed and atomizes and becomes liquor ammoniae fortis by being sent in the absorber 5 after cooler 4 condensations; Another part reenters generator 1 after being heated through solution heater 9;
Become ammoniacal liquor after ammonia process condenser 3 condensations that from gas-liquid separator 2, are evaporated, ammoniacal liquor enters diffusion jar 6 tops and is sprayed, a part spreads under the effect of hydrogen, the ammoniacal liquor that another part does not spread enters evaporimeter 7 heat exchange by solution pump 8, is delivered to spray diffusion in the diffusion jar 6 then again.The hydrogen that has absorbed a large amount of ammonia so just becomes hydrogen ammonia mist, and hydrogen ammonia mist enters that absorber 5 up flows and the liquor ammoniae dilutus that sprays carries out mass exchange then.Ammonia is absorbed by liquor ammoniae dilutus, and the hydrogen ammonia solution becomes hydrogen and comes back in the diffusion jars 6 and absorb ammonia.Like this, system has finished a circulation.
With present lithium bromide, ammonia hydrogen water is compared with the ammoniacal liquor refrigeration system, and the advantage of this system has the following aspects:
(1) owing to have only the evaporation of cold-producing medium ammonia at evaporation stage, rhodanate does not evaporate, and this New Type Absorption Refrigeration System has been cancelled rectifier unit, thereby has simplified equipment, has improved refrigerating efficiency (COP).
(2) lower heat source temperature just can satisfy the requirement of drive system, and general heat source temperature is 90～110 ℃, and in this case, evaporation (refrigeration) temperature just can reach-30 ℃.
(3) compare with same device, refrigerating efficiency (COP) is the highest can to reach 0.7, has stepped major step in " energy-conservation " advocated now.
(4) in this system, pump 8 has adopted magnetic drive pump, greatly reduces the energy consumption of auxiliary delivery pump, has enlarged the refrigerating capacity of system, is suitable for the various refrigeration system application of large, medium and small type.
Description of drawings
Fig. 1 sodium sulfocyanate-ammonia diffusion absorbing refrigeration system overall flow figure;
1. generators among the figure, 2. gas-liquid separator, 3. condenser, 4. cooler, 5 absorbers, 6 diffusions jar, 7 evaporimeters, 8 pumps, 9 solution heat exchangers;
Fig. 2 ammonia hydrogen water diffusion absorption type refrigeration system flow chart;
1. generators among the figure, 3. condenser, 5 absorbers, 7 evaporimeters, 9 solution heat exchangers, 10. rectifier, 11. heat exchangers.
The specific embodiment:
In apparatus of the present invention, behind liquor ammoniae fortis process generator 1 ebuillition of heated, in gas-liquid separator 2, separate, wherein ammonia is evaporated in a large number and enters condenser 3 condensations, and the liquor ammoniae fortis after separating becomes liquor ammoniae dilutus and flows out from gas-liquid separator 2 bottoms, mixes by the solution heat exchanger 9 and the liquor ammoniae fortis of coming from absorber 5 bottoms.Mixed solution is through being divided into two parts behind the magnetic drive pump 8: a part absorbs ammonia after quilt is sprayed and atomizes and becomes liquor ammoniae fortis by being sent in the absorber 5 after cooler 4 condensations; Another part reenters generator 1 after being heated through solution heater 9.
Become ammoniacal liquor after ammonia process condenser 3 condensations that from gas-liquid separator 2, are evaporated, ammoniacal liquor enters diffusion jar 6 tops and is sprayed, a part spreads under the effect of hydrogen, the ammoniacal liquor that another part does not spread enters evaporimeter 7 heat exchange by solution pump 8, is delivered to spray diffusion in the diffusion jar 6 then again.The hydrogen that has absorbed a large amount of ammonia so just becomes hydrogen ammonia mist, and hydrogen ammonia mist enters that absorber 5 up flows and the liquor ammoniae dilutus that sprays carries out mass exchange then.Ammonia is absorbed by liquor ammoniae dilutus, and the hydrogen ammonia solution becomes hydrogen and comes back in the diffusion jars 6 and absorb ammonia.Like this, system has finished a circulation.
Among the present invention, added diffusion jar 6 these parts between evaporimeter 7 and the absorber 5, here, the diffusion jar has three effects: 1) provide enough ammoniacal liquor to allow system can be good at running for solution pump; 2) effect of storage ammoniacal liquor; 3) diffusion for ammonia provides a good place.From the angle analysis that conducts heat, what refrigerant was taken away in evaporimeter 7 is the sensible heat of ammoniacal liquor, and in diffusion jar 6, a part of ammonia spreads therein, its latent heat has just been passed to the ammoniacal liquor of diffusion jar 6 bottoms, and the ammoniacal liquor that is cooled then carries out heat exchange by the form and the refrigerant of sensible heat.
Claims (2)
1, a kind of sodium sulfocyanate-ammonia diffusion absorbing refrigerator, comprise generator (1), condenser (3), absorber (5), evaporimeter (7), pump (8) and solution heat exchanger (9), it is characterized in that: generator (1) one end links to each other with gas-liquid separator (2), generator (1) other end is connected with solution heat exchanger (9), gas-liquid separator (2) top links to each other with diffusion jar (a 6) top through condenser (3), gas-liquid separator (2) bottom links to each other with pump (8) by solution heat exchanger (9), diffusion jar (6) bottom is by another pump (8), evaporimeter (7) is connected to form loop with diffusion jar (a 6) top, and diffusion jar (6) is communicated with respectively with absorber (5) upper and lower side, absorber (5) bottom is through pump (8), cooler (4) and absorber (5) top are connected to form the loop of circulation, and absorber (5) passes through pump (8) again simultaneously and is connected with solution heat exchanger (9).
2, refrigerating plant according to claim 1 is characterized in that, described pump (8) adopts magnetic drive pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100654123A CN100489417C (en) | 2007-04-13 | 2007-04-13 | Sodium sulfocyanate-ammonia diffusion absorbing refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100654123A CN100489417C (en) | 2007-04-13 | 2007-04-13 | Sodium sulfocyanate-ammonia diffusion absorbing refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN101029783A CN101029783A (en) | 2007-09-05 |
| CN100489417C true CN100489417C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100654123A Expired - Fee Related CN100489417C (en) | 2007-04-13 | 2007-04-13 | Sodium sulfocyanate-ammonia diffusion absorbing refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121763A (en) * | 2011-02-28 | 2011-07-13 | 浙江大学 | Diffusion absorption type thermal converter |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280981B (en) * | 2008-05-08 | 2010-10-06 | 深圳职业技术学院 | Diffusion absorption type refrigeration system |
| CN101280982B (en) * | 2008-05-08 | 2010-06-16 | 深圳职业技术学院 | Absorption type cold-hot integrated machine |
| CN107014105B (en) * | 2017-05-24 | 2022-07-05 | 荏原冷热***（中国）有限公司 | Energy-saving absorption refrigerator |
| CN108148555B (en) * | 2017-12-18 | 2020-07-31 | 安徽普泛能源技术有限公司 | Refrigeration absorbent and waste heat driven absorption type deep refrigeration method |
| CN108458514A (en) * | 2018-03-13 | 2018-08-28 | 彭学松 | A kind of microminiature ammonia-sodium sulfocyanate absorption type air-conditioner |
| CN109682114A (en) * | 2018-12-12 | 2019-04-26 | 浙江理工大学 | The compression-absorption combined heat pump system of engine fuel driving |
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2007
- 2007-04-13 CN CNB2007100654123A patent/CN100489417C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121763A (en) * | 2011-02-28 | 2011-07-13 | 浙江大学 | Diffusion absorption type thermal converter |
| CN102121763B (en) * | 2011-02-28 | 2012-06-06 | 浙江大学 | Diffusion absorption type thermal converter |
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| Publication number | Publication date |
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| CN101029783A (en) | 2007-09-05 |
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