CN100507405C - Daytime continuous solar absorption refrigeration system - Google Patents
Daytime continuous solar absorption refrigeration system Download PDFInfo
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- CN100507405C CN100507405C CNB2007100223353A CN200710022335A CN100507405C CN 100507405 C CN100507405 C CN 100507405C CN B2007100223353 A CNB2007100223353 A CN B2007100223353A CN 200710022335 A CN200710022335 A CN 200710022335A CN 100507405 C CN100507405 C CN 100507405C
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- thermal
- absorption
- arrest
- cooling water
- bed
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 62
- 238000005057 refrigeration Methods 0.000 title claims description 25
- 239000000498 cooling water Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000012546 transfer Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000002336 sorption--desorption measurement Methods 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 238000003795 desorption Methods 0.000 abstract description 9
- 239000000654 additive Substances 0.000 abstract 4
- 230000000996 additive effect Effects 0.000 abstract 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000003463 adsorbent Substances 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
-
- 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]
-
- 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
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a daylight continuous type solar energy additive refrigerating system in solar energy additive cooling domain, which is characterized by the following: comprising with 2-10 group heat collection bed set, condenser (8), storing liquid device (10), capillary tube (11)and evaporator (12); paralleling 2-6 vacuum pipe additive heat collection bed (13)as each heat collection bed set; arranging cooling water pipe (1)and mass transfer passage (5)at single vacuum pipe additive heat collection bed; penetrating through closed capping; connecting the cooling pipe to cooling water tower; arranging magnetic valve (7)between each heat collection bed and the evaporator, condenser; controlling by absorption and desorption state alternately. This invention possesses high cooling efficiency and big cooling power.
Description
Affiliated technical field
The present invention relates to a kind of daytime continuous solar absorbing refrigeration system, belong to the solar powered adsorption refrigeration technical field
Background technology
The solar powered adsorption refrigeration machine mainly is made up of absorber/generator, condenser, evaporimeter, choke valve, magnetic valve, liquid reservoir etc.Solar energy heating absorption on daytime thermal-arrest bed makes the desorb of absorption thermal-arrest bed, and the cold-producing medium that desorbs is cooled in condenser, is stored in the liquid reservoir; Adsorb the thermal-arrest bed night and be cooled, have adsorption capacity, at this moment, open choke valve, cold-producing medium is sweat cooling in evaporimeter, becomes to be adsorbed the absorption of thermal-arrest bed behind the steam, and it is saturated to reach absorption up to absorption thermal-arrest bed.Finish the circularly cooling process so repeatedly.Therefore, present absorbing refrigeration system all is the desorb on daytime, night absorption refrigeration the clearance-type process of refrigerastion, the cold of night refrigeration is stored for the use on daytime, can not realize the continuous cooling process on daytime.
The version of absorption thermal-arrest bed affects the sensible heat of the heat transfer of height, adsorbent of absorbing refrigeration system desorption temperature and mass transfer rate and absorption phase and absorption heat abstraction speed etc. usually, and these all have very large influence concerning adsorption refrigeration system efficient.So in design during adsorption refrigeration system, the researcher always wishes to pursue the highest desorption temperature, good heat transfer and mass-transfer performance at absorption working pair under to the prerequisite that allows; Absorption refrigeration stage absorption heat energy scatters and disappears apace, or the like.Yet the quick heat radiating of the quick heat-collector of desorption phase and absorption phase in the reality, good heat conduction and mass transfer be two pairs of contradictions that are difficult to fine coordination often, especially the former, going back neither one absorption thermal-arrest bed structure form up till now can meet the demands well.From the employed absorption thermal-arrest of present various countries researcher bed structure, plate absorption thermal-arrest bed is with the most use, is comparatively desirable a kind of structure, but its weak point is that the requirement of sealing processing technology is very big, and cost is more high.
Pons M and Guilleminot J, Passos E F, Escobedo J F and Menuier F, Pons M, EnibeS O, Iloeje O C etc. adopt current application flat structure the most widely.Because the leakage easily of plate absorption thermal-arrest bed, processed complex, than shortcomings such as heavinesses, the research worker is constantly attempting novel adsorbent bed structure.Antonio P and Ferreira L have carried out prototype experiment to being difficult for revealing, process relatively easy cylinder type absorption thermal-arrest bed, have obtained effect preferably, and its COP is 0.13, and a day ice-making capacity reaches 7～10kg/m
2But this system still adopts the plate glass cover plate, has all used heat preserving and insulating material with the side overleaf, thereby there is inconvenience in its type of cooling, needs artificial or automatic device system to come the ventilation window of open and close absorption thermal-arrest bed both sides.
Succeed in developing vacuum heat collection pipe in the seventies in 20th century in the world, strengthened collecting efficiency greatly.In recent years, the solar water heater fast development, in May, 2005 solar water heater account for 11.2% of whole water heater market, wherein the electron tubes type water heater has accounted for most, every technology of making vacuum tube is quite ripe, its ratio of performance to price improves constantly.For reducing the heat waste of absorption thermal-arrest bed, improve heat-collecting temperature, can adopt vacuum tube as absorption thermal-arrest bed.The Lu Yunzhuan of Shanghai Communications University, Wang Ruzhu etc. had once studied selection absorption-type and direct heat absorbing type vacuum suction thermal-arrest bed respectively.The inhomogeneities of dispelling the heat difficulty and adsorbent is heated, cools off when the problem that this high performance thermal-arrest mode need solve mainly is to adsorb the absorption of thermal-arrest bed.
Summary of the invention:
The object of the invention is to propose a kind ofly can shorten adsorption time, improves solar powered adsorption refrigeration system refrigeration work consumption, that can realize continuous cooling by day of unit mass adsorbent.
A kind of daytime continuous solar absorbing refrigeration system comprises condenser, liquid reservoir, capillary and evaporimeter, it is characterized in that: this system also comprises 2-10 group thermal-arrest bed group, wherein each thermal-arrest bed group is formed in parallel by 2-6 vacuum tube absorption thermal-arrest bed again, be provided with cooling water pipe and mass transfer channel in the described single vacuum tube absorption thermal-arrest bed, they pass the capping of sealing, and above-mentioned cooling water pipe links to each other with cooling tower; The alternately magnetic valve of control of adsorption/desorption state all is housed between each thermal-arrest bed group and evaporimeter, the condenser; Have the heat absorption band on the described cooling water pipe; Be provided with fixedly cooling water pipe and the stripe shape support that absorbs heat and be with in the described single vacuum tube absorption thermal-arrest bed; Described vacuum tube capping is the metal identical with the glass swelling coefficient.
Vacuum heat collection pipe can effectively absorb solar radiation energy, has reduced heat radiation to external world simultaneously, has improved the desorption temperature of absorption thermal-arrest bed; Cooling water pipe can be when the absorption of absorption thermal-arrest bed, and logical cooling water promptly reduces the temperature of adsorbent in the absorption thermal-arrest bed, adsorbs, thereby shortens dramatically adsorption time, for continuous cooling provides possibility; Being furnished with the heat absorption band on cooling water pipe can increase the thermal conductivity factor that adsorbs the thermal-arrest bed, makes the adsorbent energy by evenly heating and cooling; Middle mass transfer channel has increased the transmission capacity of gas; In order to guarantee the sealing of capping place, can adopt the metal material that has same coefficient of thermal expansion with glass as capping, this kind sealing structure performance is very good, and vacuum tube all has very high sealing when variations in temperature; Experiment shows, utilizes this novel water-cooled vacuum tube adsorbent bed can realize the continous way refrigeration, and its COP has increased by 6%～24% than batch (-type) refrigeration modes.
Description of drawings
Fig. 1 is the structure chart of vacuum tube absorption thermal-arrest bed.
Fig. 2 is to be the daytime continuous solar absorbing refrigeration system structure chart of example with four pipes.
Label title among Fig. 1: 1. cooling water pipe, 2. stripe shape support, 3. heat absorption band, 4. double-layer glass tube, 5. mass transfer channel.
Label title among Fig. 2: 6. pressure vacuum gauge, 1. cooling water pipe, 7. magnetic valve, 8. condenser, 9. liquid-feeding tube, 10. liquid reservoir, 11. capillaries (choke valve), 12. evaporimeters, 13. vacuum tubes absorption thermal-arrest bed (A, B, C, D).
The specific embodiment
Further specify the structure of vacuum tube absorption thermal-arrest bed of the present invention below in conjunction with Fig. 1.Absorption thermal-arrest bed is a dual-layer vacuum glass sleeve pipe 4, the sleeve pipe interlayer is a vacuum, in the pipe, mass transfer channel 5 is installed in the middle of the adsorbent in solid absorbent is filled in, utilize the micropore on the mass transfer channel to strengthen mass transfer, the effect of mass transfer channel also can be played in the natural hole gap of adsorbent.Pipe is installed cooling water pipe 1 in vacuum tube, having heat absorption on the water pipe and being with 3, is furnished with in the interior pipe that stripe shape support 2 is used for fixing cooling water pipe 1 and heat absorption is with 3.Particulate metal capping blocks vacuum tube, mass transfer channel and cooling water pipe pass capping and with the capping welded seal.This metal has the identical coefficient of expansion with glass, and this has solved present vacuum tube thermal-arrest bed can not these technological difficulties of fine sealing.
Further specify daytime continuous solar absorbing refrigeration system structure of the present invention below in conjunction with Fig. 2.This system by 4 vacuum tubes absorption thermal-arrest beds (A, B, C, D), compositions such as condenser 8, pressure vacuum gauge 6, evaporimeter 12, fluid storage compartment 10, magnetic valve 7, capillary 11 and connecting line.Vacuum tube absorption thermal-arrest bed A and B are one group, and C and D are one group, connect with copper pipe between system's each several part, between absorption thermal-arrest bed 5 and evaporimeter 12, condenser 8 four electromagnetic valves are housed and are used for regulating absorption, the detachment status of respectively adsorbing the thermal-arrest bed.Valve of connection and capillary 11 are used for regulating refrigerant liquid flow and pressure drop respectively between liquid reservoir 10 and the evaporimeter 12.Respectively connect the pressure that a pressure vacuum gauge 6 is used for measuring adsorbent bed at absorption thermal-arrest bed A and D exit, the pressure that pressure vacuum gauge 6 of placement is used for observing in the liquid reservoir between condenser 8 and liquid reservoir 10 changes.The liquid-feeding tube of installing between condenser 8 and the liquid reservoir 10 9 is used for system is vacuumized and doses cold-producing medium to system.Daytime, vacuum tube absorption thermal-arrest bed A and B added thermal desorption when needing continuous cooling under solar radiation, and C and D utilize the recirculated cooling water of cooling tower to cool off, and realize absorption refrigeration; When vacuum tube absorption thermal-arrest bed A and B desorption finish, or C and D absorption finish after immediately alternately with two groups of vacuum tubes absorption thermal-arrest beds, vacuum tube absorption thermal-arrest bed C and D carry out the thermal-arrest desorption, the logical cooling water of A and B cools off, the variation that electromagnetic valve the is experienced pressure unlatching that hockets realizes absorption refrigeration.If do not need to freeze by day, also two groups of vacuum tube absorption thermal-arrest beds can be added thermal desorption simultaneously by day, utilize cooling vacuum pipe absorption at night thermal-arrest bed, carry out the batch (-type) absorption refrigeration.
Our experimental result shows, the water-cooled vacuum tube absorption thermal-arrest bed that utilizes us to invent can be realized the continuous solar absorption refrigeration, its COP has increased by 6%～24% than batch (-type) refrigeration modes, the designed water-cooling type vacuum tube absorption thermal-arrest bed of this explanation can be realized continuous cooling by day, has increased the refrigerating capacity of system.
Claims (1)
1, a kind of daytime continuous solar absorbing refrigeration system comprises condenser (8), liquid reservoir (10), capillary (11) and evaporimeter (12), it is characterized in that: this system also comprises 2-10 group thermal-arrest bed group, wherein each thermal-arrest bed group is formed in parallel by 2-6 vacuum tube absorption thermal-arrest bed (13) again, be provided with cooling water pipe (1) and mass transfer channel (5) in the described single vacuum tube absorption thermal-arrest bed, they pass the capping of sealing, and above-mentioned cooling water pipe links to each other with cooling tower; The alternately magnetic valve (7) of control of adsorption/desorption state all is housed between each thermal-arrest bed group and evaporimeter, the condenser; Have the heat absorption band on the described cooling water pipe; Be provided with fixedly cooling water pipe and the stripe shape support that absorbs heat and be with in the described single vacuum tube absorption thermal-arrest bed; Described vacuum tube capping is the metal identical with the glass swelling coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100223353A CN100507405C (en) | 2007-05-14 | 2007-05-14 | Daytime continuous solar absorption refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100223353A CN100507405C (en) | 2007-05-14 | 2007-05-14 | Daytime continuous solar absorption refrigeration system |
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| Publication Number | Publication Date |
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| CN101097102A CN101097102A (en) | 2008-01-02 |
| CN100507405C true CN100507405C (en) | 2009-07-01 |
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| CNB2007100223353A Expired - Fee Related CN100507405C (en) | 2007-05-14 | 2007-05-14 | Daytime continuous solar absorption refrigeration system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115460B (en) * | 2013-01-18 | 2015-08-26 | 舟山金瀛制冷科技有限公司 | A kind of absorption refrigeration equipment of self-pressure regulating feed flow |
| CN103697617A (en) * | 2014-01-13 | 2014-04-02 | 云南师范大学 | High-efficiency solar adsorption refrigerating system |
| CN103968597B (en) * | 2014-04-29 | 2016-04-27 | 北京理工大学 | Two-way Cycle adsorbed solar cold and heat combined supply vacuum tube |
| CN106196759B (en) * | 2016-08-31 | 2019-09-13 | 广州万宝集团有限公司 | A kind of negative-pressure adsorption-type refrigeration system condenser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2524179Y (en) * | 2002-02-27 | 2002-12-04 | 上海交通大学 | Large diameter vacuum pipe adsorption generator for solar air conditioner |
| CN1128326C (en) * | 1999-08-07 | 2003-11-19 | 云南师范大学 | Integrated solar refrigerating-heating equipment |
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2007
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128326C (en) * | 1999-08-07 | 2003-11-19 | 云南师范大学 | Integrated solar refrigerating-heating equipment |
| CN2524179Y (en) * | 2002-02-27 | 2002-12-04 | 上海交通大学 | Large diameter vacuum pipe adsorption generator for solar air conditioner |
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| CN101097102A (en) | 2008-01-02 |
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Granted publication date: 20090701 Termination date: 20110514 |