CN1082650C - Two-section or multi-section hot water lithium bromide absorbing refrigerating unit - Google Patents
Two-section or multi-section hot water lithium bromide absorbing refrigerating unit Download PDFInfo
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- CN1082650C CN1082650C CN98111110A CN98111110A CN1082650C CN 1082650 C CN1082650 C CN 1082650C CN 98111110 A CN98111110 A CN 98111110A CN 98111110 A CN98111110 A CN 98111110A CN 1082650 C CN1082650 C CN 1082650C
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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
Abstract
The present invention relates to a hot-water type lithium bromide absorption refrigerating apparatus with two stages or multiple stages, which comprises two or more generators, condensers, evaporators, absorbers, solution heat exchangers, pipelines, pumps and valves, wherein the pipelines, the pumps and the valves are used for connecting the system; the two or more generators are connected by the hot water system; the two or more evaporators are connected by the cold water system; the cooling water systems are connected in parallel and simultaneously enter the condensers and the absorbers; the two or more condensers and the two or more absorbers are connected by the cooling water systems. Hot water, cold water and cooling water are sequentially cooled and heated in stages in the two or more individual refrigerant and absorption liquid working circulation systems. Therefore, the temperature of the hot water is lowered.
Description
The present invention relates to a kind of hot water lithium bromide absorbing refrigerating unit.It is higher to relate in particular to a kind of thermal source hot water temperature, and the lithium bromide water absorption refrigerating plant that the hot water temperature need be even lower.
Hot water lithium bromide absorbing refrigerating unit utilizes the absorption refrigeration principle to realize freezing with hot water as thermal source.Its process of refrigerastion is that hot water heating lithium bromide makes it produce water vapour and concentrates, the water vapour that produces is condensed into water as refrigerant in condenser, water as refrigerant enters the heat of absorption cold water in the evaporimeter and evaporates after throttling, and the temperature of cold water is reduced and the generation refrigeration.The refrigerant vapour of evaporation is absorbed by the concentrated solution of coming from generator, and is thinning behind the concentrated solution absorption water vapour, and weak solution is sent to the generator heating again and concentrates, and isolates water as refrigerant.So continuous circulation has constituted the single-action circulation of lithium bromide absorbing type refrigeration.In this single-action circulation, have only an evaporimeter and an absorber to finish whole cold water cooling and cooling water temperature-rise period, its evaporating pressure is corresponding with cold water outlet temperature in same cavity, the absorbent solution temperature is corresponding with cooling water outlet temperature, the corresponding water vapor pressure of weak solution is low in absorber for this reason, temperature is high, and its concentration is also high.Because weak solution concentration can not be even lower, weak solution concentration is dense, its occurrence temperature height.In condenser, cooling water is finished whole temperature-rise period, and its condensing pressure is corresponding with cooling water outlet temperature for this reason.In generating process, condensing pressure is equal to generation pressure substantially.In the solution generating process, the pressure height takes place, its temperature that takes place that comes to life is also high, the heating source temperature can not be reduced for this reason, and heat source of hot water is not fully utilized.U.S. Pat P5044174 discloses a kind of Absorption Refrigerator, and it is divided into the N section with each generator, condenser, evaporimeter and absorber, and evaporimeter is enclosed in together with absorber in every section, forms the independent parts of N section.Wherein first section of first of evaporimeter section and absorber combines, and second section of evaporimeter and second section of absorber combine, and constitute N unit successively.First section of generator and first section of condenser combine, and second section of generator and second section of condenser combine, and constitute N unit successively.Cold water is introduced into the N section of evaporimeter from high temperature side, enters (N-1) section of evaporimeter then, and cooling water is introduced into the N section of absorber and the N section of condenser from low temperature side, enters (N-1) section of absorber then.On the one hand, because the thermal source that this invention generator adopts is a hot water and steam, its main purpose is to reduce cooling water inflow, therefore can only be applicable to that some heating sources are requirements of the large scale computer of steam, and can not be applicable to that some heating sources are hot water lithium bromide absorbing refrigerating units of hot water.So that heating source hot water can not obtain more effective utilization.On the other hand, single generator is enclosed in single condenser, single evaporimeter is enclosed in single absorber, a plurality of independently unit of recomposition.This closing form complex structure, the manufacturing cost height.
The object of the present invention is to provide a kind of thermal source hot water temperature can being even lower, thereby make heating source obtain more effective utilization, hot water lithium bromide absorbing refrigerating unit simple in structure.
The object of the present invention is achieved like this: a kind of multi-section hot water lithium bromide absorbing refrigerating unit, comprise and be two generator, condenser, evaporimeter, absorber and solution heat exchanger and the pipeline that is connected this system, pump, valve, the cold water pipeline connects several evaporator series, cold water enters second evaporimeter after being introduced into first evaporimeter, cooling water pipeline is connected in series several absorbers, cooling moisture two road enters first condenser and first absorber simultaneously, one the tunnel enters second condenser after going out first condenser, another road enters second absorber after going out first absorber, be characterized in that first generator and second condenser are arranged in the same cavity, second evaporimeter and second absorber are arranged in the same cavity, first generator, second condenser, second evaporimeter, second absorber and first solution heat exchanger are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop; Second generator and first condenser are arranged in the same cavity, first evaporimeter and first absorber are arranged in the same cavity, and second generator, first condenser, first evaporimeter, first absorber and second solution heat exchanger are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop.The heating source hot water line is connected in series two generators in this device, and heating source hot water is introduced into first generator, goes out first generator and enters second generator again.
The purpose of this utility model can also be achieved in that a kind of multi-section hot water lithium bromide absorbing refrigerating unit, comprise and be three generator, condenser, evaporimeter, absorber and solution heat exchanger and the pipeline that is connected this system, pump, valve, the cold water pipeline connects several evaporator series, cold water enters second evaporimeter after being introduced into first evaporimeter, cooling water pipeline is connected in series several absorbers, cooling moisture two road enters first condenser and first absorber simultaneously, one the tunnel enters second condenser after going out first condenser, another road enters second absorber after going out first absorber, be characterized in: first generator and the 3rd condenser are arranged in the same cavity, the 3rd evaporimeter and the 3rd absorber are arranged in the same cavity, first generator, the 3rd condenser, the 3rd evaporimeter, the 3rd absorber and first solution heat exchanger are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop.Second generator and second condenser are in same cavity, second evaporimeter and second absorber are arranged in the same cavity, and second generator, second condenser, second evaporimeter, second absorber and second solution heat exchanger are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop.The 3rd generator and first condenser are in same cavity, first evaporimeter and first absorber are arranged in the same cavity, and the 3rd generator, first condenser, first evaporimeter, first absorber and the 3rd solution heat exchanger are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop.The heating source hot water line is connected in series three generators in this device, and heating source hot water is introduced into first generator, enters second generator after going out first generator, enters the 3rd generator again after going out second generator.
Because the heat source way that generator of the present invention adopts is a hot water, the heating source hot water line is connected in series several generators, heating source hot water is introduced into first generator, enter second generator again after going out first generator, hot water reduces temperature successively in two generators, under the condition of identical hot water inlet temperature and cooling water outlet and inlet temperature, cold water out temperature, the hot water outlet temperature can be reduced by 18 ℃ than original, and thermodynamic coefficient COP also can effectively be improved, thereby makes heating source hot water obtain more effective utilization.On the other hand, the present invention all is arranged on several evaporimeters and absorber in the same housing because several generators and condenser all are arranged in the same housing, and the refrigerating plant of Gou Chenging is simple and compact for structure thus, low cost of manufacture.
Fig. 1 is present single-action hot water lithium bromide absorbing refrigerating unit structure schematic flow sheet.
The two-period form hot water lithium bromide absorbing refrigerating unit structure schematic flow sheet that Fig. 2 proposes for this patent.
The syllogic hot water lithium bromide absorbing refrigerating unit structure schematic flow sheet that Fig. 3 proposes for this patent.
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is a single-action hot water lithium bromide absorbing refrigerating unit structure schematic flow sheet.This structure and flow process are in the previously used technology of the present invention.This device is made up of generator 1, condenser 2, evaporimeter 4, absorber 5, solution heat exchanger 3, solution pump, cryogenic fluid pump and pipeline, valve member of connecting this system etc.Generator 1 and condenser 2 are combined in the same cavity, and evaporimeter 4, absorber 5 are combined in the same cavity.The working cycles of this device is performed such: the weak solution of absorber 5 is pooled to a place, carry by solution pump, by entering generator 1 after solution heat exchanger 3 intensifications, concentrated by hot water heating back, the water vapour of generation is formed water as refrigerant by condenser 2 condensations in same cavity.Water as refrigerant enters the heat of evaporimeter 4 draw in cold water systems inner cold water under the overall leadership and evaporates after throttling become refrigerant vapour.The bromize lithium concentrated solution that concentrates in generator 1 enters absorber 5 after through solution heat exchanger 3 coolings, absorbs the refrigerant vapour in the same cavity and makes concentration thinning.This circulation has constituted the single-action hot water lithium bromide absorbing cold-producing medium and the absorption liquid circulatory system.In this device, the inlet temperature of evaporimeter 4 cold water is that 12 ℃, outlet temperature are 7 ℃, and the cooling water parallel connection enters absorber 5, condenser 2, discharges this device through still accumulating a place behind above-mentioned two parts.The inlet temperature of cooling water be 32 ℃, the outlet be 38 ℃, the cooling range of absorber and condenser is identical.The inlet temperature of hot water generally can't be determined, is provided by applying unit, and outlet temperature is limited by the out temperature of cold water and cooling water, advances 7 ℃ as 12 ℃ in cold water and goes out, and cooling water advances 38 ℃ for 32 ℃ and goes out, and the outlet of hot water is 84 ℃.In this device, thermodynamic coefficient COP is about 0.7.Because thermodynamic coefficient is lower, effectively utilize heat source of hot water, the outlet temperature of hot water is reduced, the method that only adds the bigger device heat exchange area can reduce the hot water outlet temperature about 4 ℃ again, but that the cost of equipment increases is very big.
The present invention is even lower the hot water outlet temperature for reaching, but does not increase more costs, and a kind of new technology is provided.
The two-period form hot water lithium bromide absorbing refrigerating unit structure schematic flow sheet that Fig. 2 proposes for this patent.This device by first generator 1 ', second generator 1 ", first condenser 2 ', second condenser 2 ", first evaporimeter 4 ', second evaporimeter 4 ", first absorber 5 ', second absorber 5 ", first solution heat exchanger 3 ', second solution heat exchanger 3 " and formed by the pipeline, pump, the valve that connect this system.First generator 1 ' and second condenser 2 " in same cavity; second evaporimeter 4 " and second absorber 5 " in same housing, first generator 1 ', second condenser 2 ", second evaporimeter 4 ", second absorber 5 " constitute the independently cold-producing medium and the absorption liquid circulatory system.The endless form of its cold-producing medium and absorption liquid and refrigeration principle are identical with Fig. 1.Second generator 1 " and first condenser 2 ' in same cavity; first evaporimeter 4 ' and first absorber 5 ' be arranged in the same cavity; second generator 1 ", first condenser 2 ', first evaporimeter 4 ', first absorber 5 ' constitute the independently cold-producing medium and the absorption liquid circulatory system, the endless form of its cold-producing medium and absorption liquid and refrigeration principle also are identical with Fig. 1.In this device cold water be introduced into first evaporimeter 4 ' after enter second evaporimeter 4 ", cold water pipeline 7 connects two evaporator series, cold water is finished temperature-fall period at two evaporimeters, advances to reduce to 7 ℃ from 12 ℃ and goes out.Cooling moisture two road enter simultaneously first condenser 2 ' and first absorber 5 ', one the tunnel go out first condenser 2 ' after enter second condenser 2 "; cooling water pipeline 6 is connected in series two condensers; another road go out first absorber 5 ' after enter second absorber 5 ", cooling water pipeline 6 is connected in series two absorbers, in two condensers, finish the temperature-rise period of cooling water in the condenser heat transfer process, in two absorbers, finish the temperature-rise period of cooling water in the absorber heat exchanging process, heat is taken out of outside the machine.Heating source hot water be introduced into first generator 1 ', go out first generator 1 ' after enter second generator 1 again ", hot water reduces temperature successively in two generators.In the working cycles process, cold water goes out on advancing under in evaporimeter, and the temperature-fall period that the flow direction of cooling water and temperature-rise period and concentrated solution absorb forms the full counter heat exchange, has realized best heat exchange effect.In whole evaporation absorption process, arrange about the evaporimeter position that the absorber position of the dense good absorbing effect of concentration and evaporating temperature is low is symmetrical, make the good and bad complementary mutually of evaporation absorber.Cooling water goes out from the side by generator, and opposite side enters condenser, and the flow direction of cooling water is that the water vapour of temperature-rise period and generator forms the full counter exchange, has obtained lower generation pressure.
The syllogic hot water lithium bromide absorbing refrigerating unit structure schematic flow sheet that Fig. 3 proposes for this patent.This device by first generator 1 ', second generator 1 ", the 3rd generator 1 ' ", first condenser 2 ', second condenser 2 ", the 3rd condenser 2 ' ", first evaporimeter 4 ', second evaporimeter 4 ", the 3rd evaporimeter 4 ' ", first absorber 5 ', second absorber 5 ", the 3rd absorber 5 ' ", first solution heat exchanger 3 ', second solution heat exchanger 3 ", the 3rd solution heat exchanger 3 ' ", solution pump, cryogenic fluid pump and pipeline, valve etc. form.First generator 1 ' and the 3rd condenser 2 ' " be arranged in the same cavity; the 3rd evaporimeter 4 ' " and the 3rd absorber 5 ' " is arranged in the same cavity, first generator 1 ', the 3rd condenser 2 ' ", the 3rd evaporimeter 4 ' ", the 3rd absorber 5 ' " and first solution heat exchanger 3 ' constitute independently cold-producing medium and absorption liquid working cycles loop.The endless form of its cold-producing medium and absorption liquid and refrigeration principle are identical with device shown in Figure 1.Second generator 1 " and second condenser 2 " is arranged in the same cavity, second evaporimeter 4 " and second absorber 5 " is arranged in the same cavity, and second generator 1 ", second condenser 2 ", second evaporimeter 4 ", second absorber 5 " and second solution heat exchanger 3 " constitute independently cold-producing medium and absorption liquid working cycles loop.Its refrigeration work principle is identical with Fig. 1.The 3rd generator 1 ' " and first condenser 2 ' be arranged in the same cavity; first evaporimeter 4 ' and first absorber 5 ' be arranged in the same cavity, the 3rd generator 1 ' ", first condenser 2 ', first evaporimeter 4 ', first absorber 5 ' and the 3rd solution heat exchanger 3 ' " constitute independently cold-producing medium and absorption liquid working cycles loop.Its refrigeration work principle also is identical with Fig. 1.Heating source hot water be introduced into first generator 1 ', go out first generator 1 ' after enter second generator 1 ", go out second generator 1 " then enter again the 3rd generator 1 ' ", hot water line 8 is connected in series three generators, the hot water temperature reduces successively.Cold water be introduced into first evaporimeter 4 ', go out first evaporimeter 4 ' after enter second evaporimeter 4 ", go out second evaporimeter 4 " then enter again the 3rd evaporimeter 4 ' ", cold water pipeline 7 connects three evaporator series, cold water temperature reduces successively.Cooling moisture two road enter simultaneously first absorber 5 ' and first condenser 2 ', one the tunnel go out first absorber 5 ' after enter second absorber 5 "; go out second absorber 5 " then enter again the 3rd absorber 5 ' "; cooling water system pipeline 6 is connected in series three absorbers, and cooling water temperature raises successively.Another road go out first condenser 2 ' after enter second condenser 2 ", go out second condenser 2 " then enter again the 3rd condenser 2 ' ", this one road cooling water pipeline 6 is connected in series three condensers, cooling water temperature raises successively.
Claims (2)
1, a kind of multi-section hot water lithium bromide absorbing refrigerating unit, comprise and be two generator, condenser, evaporimeter, absorber and solution heat exchanger and the pipeline that is connected this system, pump, valve, the cold water pipeline connects several evaporator series, cold water enters second evaporimeter after being introduced into first evaporimeter, cooling water pipeline is connected in series several absorbers, cooling moisture two road enters first condenser and first absorber simultaneously, one the tunnel enters second condenser after going out first condenser, another road enters second absorber after going out first absorber, it is characterized in that: (2 ") are arranged in the same cavity; second evaporimeter (4 ") and second absorber (5 ") are arranged in the same cavity; first generator (1 '); second condenser (2 ") with first generator (1 ') and second condenser, second evaporimeter (4 "); (5 ") and first solution heat exchanger (3 ') are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop second absorber, (1 ") and first condenser (2 ') are arranged in the same cavity second generator; first evaporimeter (4 ') and first absorber (5 ') are arranged in the same cavity; second generator (1 "), first condenser (2 '), first evaporimeter (4 '), (3 ") are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop; the heating source hot water line is connected in series two generators in this device; heating source hot water is introduced into first generator (1 '), goes out first generator (1 ') and enters second generator (1 ") again for first absorber (5 ') and second solution heat exchanger.
2, a kind of multi-section hot water lithium bromide absorbing refrigerating unit, comprise and be three generator, condenser, evaporimeter, absorber and solution heat exchanger and the pipeline that is connected this system, pump, valve, the cold water pipeline connects several evaporator series, cold water enters second evaporimeter after being introduced into first evaporimeter, cooling water pipeline is connected in series several absorbers, cooling moisture two road enters first condenser and first absorber simultaneously, one the tunnel enters second condenser after going out first condenser, another road enters second absorber after going out first absorber, it is characterized in that: with first generator (1 ') and the 3rd condenser (2 ' ") be arranged in the same cavity; the 3rd evaporimeter (4 ' ") and the 3rd absorber (5 ' ") is arranged in the same cavity; first generator (1 '); the 3rd condenser (2 ' "), the 3rd evaporimeter (4 ' "); the 3rd absorber (5 ' ") and first solution heat exchanger (3 ') be arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop, second generator (1 ") and second condenser (2 ") be arranged in the same cavity, second evaporimeter (4 ") and second absorber (5 ") be arranged in the same cavity, second generator (1 "); second condenser (2 "), second evaporimeter (4 "); second absorber (5 ") and second solution heat exchanger (3 ") are arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop; the 3rd generator (1 ' ") and first condenser (2 ') are arranged in the same cavity, first evaporimeter (4 ') and first absorber (5 ') are arranged in the same cavity, the 3rd generator (1 ' "); first condenser (2 '); first evaporimeter (4 '); first absorber (5 ') and the 3rd solution heat exchanger (3 ' ") be arranged in order and constitute independently cold-producing medium and absorption liquid working cycles loop, the heating source hot water line is connected in series three generators in this device, heating source hot water is introduced into first generator (1 '), enter second generator after going out first generator (1 '), enter the 3rd generator (1 ' " again after going out second generator).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111110A CN1082650C (en) | 1998-01-08 | 1998-01-08 | Two-section or multi-section hot water lithium bromide absorbing refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111110A CN1082650C (en) | 1998-01-08 | 1998-01-08 | Two-section or multi-section hot water lithium bromide absorbing refrigerating unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1189598A CN1189598A (en) | 1998-08-05 |
| CN1082650C true CN1082650C (en) | 2002-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98111110A Expired - Fee Related CN1082650C (en) | 1998-01-08 | 1998-01-08 | Two-section or multi-section hot water lithium bromide absorbing refrigerating unit |
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| CN (1) | CN1082650C (en) |
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| CN102914080A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage single-effect and double-effect lithium bromide absorption refrigerating unit with smoke and hot water afterburning |
| CN102914081A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-section flue gas hot-water single/double-effect composite lithium bromide absorption type refrigerating unit |
| CN102914079A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage type hot water direct-fired single-double effect composite lithium bromide absorption refrigeration unit |
| CN103123181A (en) * | 2012-12-06 | 2013-05-29 | 双良节能系统股份有限公司 | Single-effect and double-effect compound-type lithium bromide absorption refrigerating device with smoke and hot water afterburning |
| CN103505901A (en) * | 2013-09-28 | 2014-01-15 | 昆山市周市溴化锂溶液厂 | Lithium bromide cycle collection based smoke exhaust and desulfurization system |
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| CN107131674A (en) * | 2017-06-28 | 2017-09-05 | 远大空调有限公司 | A kind of two-stage type single-action Hot water units system |
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| CN107576092A (en) * | 2017-09-26 | 2018-01-12 | 双良节能系统股份有限公司 | Two sections of condensing hot water compound type lithium bromide absorption type handpiece Water Chilling Units |
| CN110220303B (en) * | 2019-02-26 | 2024-03-29 | 华北电力大学 | Low exergy -loss heat exchanger |
| CN110307663B (en) * | 2019-07-08 | 2023-12-19 | 双良节能系统股份有限公司 | Two-stage type steam heat pump and hot water type refrigerating lithium bromide absorption unit |
-
1998
- 1998-01-08 CN CN98111110A patent/CN1082650C/en not_active Expired - Fee Related
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| CN1189598A (en) | 1998-08-05 |
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