CN100344917C - Hot water two-stage multi-section lithium bromide absorption cold-water machine set - Google Patents
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- CN100344917C CN100344917C CNB2006100394973A CN200610039497A CN100344917C CN 100344917 C CN100344917 C CN 100344917C CN B2006100394973 A CNB2006100394973 A CN B2006100394973A CN 200610039497 A CN200610039497 A CN 200610039497A CN 100344917 C CN100344917 C CN 100344917C
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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
The present invention relates to a hot water two-stage multi-section lithium bromide absorption cold water machine set, which belongs to the technical field of the refrigeration device. The machine set comprises a first heat exchanger (3), a second heat exchanger (7), a first stage generator (4), a first stage absorber (5), a second stage generator (8), a condenser (12), an evaporator (20), a second stage absorber (16), a solution pump, a refrigerant pump, pipelines and valves used of connecting the components, wherein the second stage generator (16) and the condenser (12) of the machine set are arranged in a cylinder body, the first stage absorber (5), the evaporator (20), and the second stage absorber (14) are arranged in another cylinder. The present invention is characterized in that one or a plurality of generator-condenser sectioning partition plates (9) are arranged in the second stage generator (8) and the condenser (12), and the second stage generator (16) and the condenser (12) are partitioned into a two-section or multi-section type structure. The present invention can enlarge the heat transfer temperature difference of the machine set generator and effectively reduce the heat exchange area and structure volume of the machine set.
Description
Technical field:
The present invention relates to a kind of hot water type lithium bromide absorption cooling water unit, especially relate to a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units.Belong to technical field of refrigeration equipment.
Background technology:
Hot-water two-stage type lithium bromide absorption cold water unit (being called hot-water two-stage generation two-stage absorption-type lithium bromide absorption cold water unit again) can utilize temperature to produce idle call cold water less than 90 ℃ hot water as driving heat source owing to adopt two-stage generation two-stage to absorb workflow.Along with countries in the world to energy-conservation and pay attention to day by day environmental requirement, this class unit will more and more be used having the low-grade hot water (temperature 〉=65 ℃) and the place of air-conditioning demand.Hot-water two-stage type lithium bromide absorption cold water unit in the past as shown in Figure 1, the second-stage generator 7 of this unit and condenser 8, evaporimeter 9 and secondary absorber 10 are the unistage type structure, application places for hot water import/export coolant-temperature gage lower (as 70 ℃/55 ℃), because of the heat transfer temperature difference of first-stage generator and second-stage generator too small, must increase considerably the heat exchange area of each parts, otherwise unit is difficult to effective recycling hot water heat energy, and refrigerating capacity does not reach requirement.This makes that the structural volume of unit is huge, and material cost increases, and user's period of recouping investments in equipment prolongs, make this class unit UTILIZATION OF VESIDUAL HEAT IN and energy-saving and cost-reducing aspect effect be restricted.
Summary of the invention:
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of and can make the heat transfer temperature difference heat exchange area that obtain strengthening, that effectively reduce the unit generator of unit generator and the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units of structural volume.
The object of the present invention is achieved like this:
The present invention is in the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units of being made up of other parts (comprising hot water flow process unit in parallel and hot water serial flow unit); by array apparatus is set down; make the heat transfer temperature difference of unit generator obtain strengthening; improved the heat exchange property of generator; the heat exchange area and the structural volume of unit generator have been effectively reduced; and can effectively utilize low-grade hot water (as the hot water of 67 ℃/52 ℃ of import/export temperature) to freeze, be UTILIZATION OF VESIDUAL HEAT IN; energy-saving and cost-reducing; the protection environment; realize recycling economy and build a conservation-minded society a kind of effective refrigeration plant is provided.
Invention one: the segmentation dividing plate is set in second-stage generator and condenser, second-stage generator and condenser are separated into pressure multistage (more than two sections) formula generation from high to low, condensation structure, the generation of the corresponding section of condenser cooling water entrance point (second-stage generator dilute solution inlet end), condensing pressure is minimum, the generation of the corresponding section of the condenser cooling water port of export (the second-stage generator concentrated solution port of export), condensing pressure is the highest (with conventional hot-water two-stage type lithium bromide absorption cold water unit second-stage generator, condenser pressure is identical), thereby the occurrence temperature of solution in the reduction second-stage generator from low pressure stage to the high pressure section generating process, increase the heat transfer temperature difference of second-stage generator, improve the heat exchange property of second-stage generator, reduce the hot water outlet temperature, effectively utilize hot water heat energy, and reduce the heat exchange area and the set structure volume of second-stage generator.
Invention two: on the basis of invention one, the segmentation dividing plate is set in evaporimeter and secondary absorber, evaporimeter and secondary absorber are separated into pressure multistage (more than two sections) formula evaporation from high to low, absorbing structure, the evaporation of the corresponding section of evaporimeter cooling water inlet end (the secondary absorber weak solution port of export), absorption pressure is the highest, the evaporation of the corresponding section of evaporimeter cooling water outlet end (secondary absorber concentrated solution entrance point), absorption pressure is minimum (with conventional hot-water two-stage type lithium bromide absorption cold water unit evaporimeter, secondary absorber pressure is identical), secondary absorber outlet weak solution concentration is minimized, thereby reduce the occurrence temperature of weak solution in first-stage generator, increase the heat transfer temperature difference of first-stage generator, improve the heat exchange property of first-stage generator, reduce the hot water outlet temperature, effectively utilize hot water heat energy, and reduce the heat exchange area and the set structure volume of first-stage generator.
Description of drawings:
Fig. 1 is a hot-water two-stage type lithium bromide absorption cold water unit schematic diagram in the past.
Fig. 2 is Application Example 1 schematic diagram of the present invention.
Fig. 3 is Application Example 2 schematic diagrames of the present invention.
Fig. 4 is Application Example 3 schematic diagrames of the present invention.
Fig. 5 is Application Example 4 schematic diagrames of the present invention.
Among the figure: secondary generating pump 1, absorption pump 2, first heat exchanger 3, first-stage generator 4, one-level absorber 5, thermal insulation layer 6, second heat exchanger 7, second-stage generator 8, generation-condenser segmentation dividing plate 9, generator cloth liquid bath 10, condenser low pressure stage 11, condenser 12, generation-high condenser pressure section 13, evaporation-absorber low pressure stage 14, evaporimeter cloth tank 15, secondary absorber 16, evaporation-absorber segmentation dividing plate 17, absorber cloth liquid bath 18, evaporation-absorber high pressure section 19, evaporimeter 20, cryogenic fluid pump 21, one-level generating pump 22.
The specific embodiment:
Embodiment 1:
Invention two application implementation is unit as shown in Figure 2, and this unit is by secondary generating pump 1 (also can be described as the secondary solution pump), absorption pump 2, first heat exchanger 3, first-stage generator 4, one-level absorber 5, second heat exchanger 7, second-stage generator 8, condenser low pressure stage 11, condenser 12, evaporimeter 20, secondary absorber 16, cryogenic fluid pump 21, one-level generating pump 22 (also can be described as the one-level solution pump), control system (not shown) and connects the hot-water two-stage that pipeline, valve the constituted two segment type lithium bromide absorption cold water units of each parts.The second-stage generator 8 of unit and condenser 12 are arranged in the cylindrical shell (upper shell), and first-stage generator 4, one-level absorber 5, evaporimeter 20 and secondary absorber 16 are arranged in another cylindrical shell (lower shell).Between first-stage generator 4, one-level absorber and evaporimeter 5, secondary absorber 14, be provided with thermal insulation layer 6, separate also heat insulation with other chambers first-stage generator, one-level absorber chamber; In second-stage generator 8, condenser 12, be provided with generation-condenser segmentation dividing plate 9, second-stage generator 8, condenser 12 are separated into the two-period form structure, generation-condenser segmentation dividing plate 9 tops are generation-condenser low pressure stage 11, the bottom is a generation-high condenser pressure section 13, generation-condenser segmentation dividing plate 9 is provided with generator cloth liquid bath 10 and (generator cloth liquid bath 10 and generation-condenser segmentation dividing plate 9 is set as one, compact conformation is simple), generator cloth liquid bath 10 bottoms are provided with liquid distributing hole; At evaporimeter 20, be provided with evaporation-absorber segmentation dividing plate 17 in the secondary absorber 16, with evaporimeter 20, secondary absorber 16 is separated into the two-period form structure, dividing plate top is evaporation-absorber low pressure stage 14, the lower partition is an evaporation-absorber high pressure section 19, evaporation-absorber segmentation dividing plate 17 is provided with evaporimeter cloth tank 15 and absorber cloth liquid bath 18 (is set as one with evaporimeter cloth tank 15 and absorber cloth liquid bath 18 with evaporation-absorber segmentation dividing plate 17, compact conformation is simple), evaporimeter cloth tank 15 bottoms are provided with water distributing pore, and absorber cloth liquid bath 18 bottoms are provided with liquid distributing hole.
During unit operation, be introduced into series system in the evaporimeter heat exchanger tube of evaporation-absorber high pressure section 19 from air-conditioning system, the higher cold water of temperature, enter again after being cooled by the outer water as refrigerant of heat exchanger tube and continue heat exchange in the evaporimeter heat exchanger tube of evaporation-absorber low pressure stage 14 and lower the temperature.Because the cold water temperature in the evaporation-absorber high pressure section 19 evaporimeter heat exchanger tubes is higher, the evaporating pressure of evaporation-absorber high pressure section and absorption pressure are also corresponding, and higher (evaporating pressure and the absorption pressure of low pressure stage are lower, identical with the evaporating pressure and the absorption pressure of conventional hot-water two-stage type unit), make the concentration of secondary absorber 16 outlet weak solutions be minimized.Secondary absorber 16 outlet weak solutions are sent into first-stage generator 4 heating by one-level generating pump 22 and are taken place, because solution concentration is lower, occurrence temperature reduction, heat transfer temperature difference increase, the heat exchange property of first-stage generator 4 are improved, help reducing the heat exchange area of first-stage generator, and effectively reduce the hot water outlet temperature, make full use of hot water heat energy.
Send into the water as refrigerant of the evaporimeter heat-exchanging tube bundle top spray of evaporation-absorber low pressure stage 14 by cryogenic fluid pump 21, a part flashes to the secondary absorber 16 that steam enters low pressure stage, remainder is pooled in the evaporimeter cloth tank 15 on evaporation-absorber segmentation dividing plate 17, water distributing pore through evaporimeter cloth tank 15 bottoms under the water level hydrostatic pressure enters evaporation-absorber high pressure section 19, continues sweat cooling in evaporation-absorber high pressure section 19 evaporimeters.
Send into the concentrated solution of the secondary absorber 16 heat-exchanging tube bundle top sprays of evaporation-absorber low pressure stage 14 by absorption pump 2, after coming refrigerant vapour, the concentration of spontaneous evaporation-absorber low pressure stage 14 evaporimeters to reduce, absorption is pooled in the evaporimeter cloth tank 15 on evaporation-absorber segmentation dividing plate 17, liquid distributing hole through evaporimeter cloth tank 15 bottoms under the liquid level hydrostatic pressure enters evaporation-absorber high pressure section 19, continue to absorb the refrigerant vapour from high evaporation-absorber high pressure section 19 evaporimeters in high pressure section secondary absorber 16, concentration further reduces.
In second-stage generator 8, condenser 12, be introduced in generations-condenser low pressure stage 11 condenser heat exchanger tubes with series system from the cooling water outside, that temperature is lower, enter continuation heat exchange intensification in generations-high condenser pressure section 13 condenser heat exchanger tubes again after heating up with the outer refrigerant vapour heat exchange of heat exchanger tube.Hot water is introduced in generation-high condenser pressure section 13 second-stage generators 8 heat exchanger tubes with series system, enters after the outer lithium-bromide solution cooling of heating tube again and continues the heat exchange cooling in generation-condenser low pressure stage 11 second-stage generator heat exchanger tubes.Because the cooling water temperature in the generation-condenser low pressure stage 11 condenser heat exchanger tubes is lower, the condensing pressure of generation-condenser low pressure stage and the also corresponding lower (condensing pressure of high pressure section and that pressure takes place is higher of pressure takes place, identical with the condensing pressure of conventional hot-water two-stage type unit) with generation pressure, make occurrence temperature reduction, heat transfer temperature difference increase, the heat exchange property of generation-condenser low pressure stage second-stage generator improve, help reducing the heat exchange area of second-stage generator, and effectively reduce the hot water outlet temperature, make full use of hot water heat energy.
Send into the weak solution of the second-stage generator heat-exchanging tube bundle top spray of generation-condenser low pressure stage 11 by secondary generating pump 1, produced in the generator cloth liquid bath 10 that is pooled to after refrigerant vapour, temperature and concentration raise on generation-condenser segmentation dividing plate 9 by hot water heating in the pipe, liquid distributing hole through generator cloth liquid bath 10 bottoms under the liquid level hydrostatic pressure enters generation-high condenser pressure section 13, the hot water heating produces refrigerant vapour in continuing by heat exchanger tube in the high pressure section second-stage generator, and temperature and concentration further raise.
In the second-stage generator 8 of unit shown in Figure 2, condenser 12 two generation-condenser segmentation dividing plates 9 are set, second-stage generator, condenser promptly become three stage structure (figure slightly), and by that analogy, the setting of segmentation dividing plate is many more, and number of fragments is also many more.Number of fragments is many more, and the generation of unit second-stage generator, condenser, condensation effect are good more.Number of fragments in second-stage generator, the condenser generally is no more than the cooling water main-process stream number of condenser.
In the evaporimeter 20 of unit shown in Figure 2, secondary absorber 16 two evaporation-absorber segmentation dividing plates 17 are set, evaporimeter, secondary absorber promptly become three stage structure (figure slightly), and by that analogy, the setting of segmentation dividing plate is many more, and number of fragments is also many more.Number of fragments is many more, and the heat exchange property of unit first-stage generator is good more.Number of fragments in evaporimeter, the secondary absorber generally is no more than the cold water main-process stream number of evaporimeter.
Cancel the generation-condenser segmentation dividing plate 9 in unit second-stage generator 8 shown in Figure 2, the condenser 12, unit promptly becomes the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units (as shown in Figure 3) that only is provided with evaporation-absorber segmentation dividing plate 17, also the invention one.
Cancel the evaporation-absorber segmentation dividing plate 17 in unit evaporimeter 20 shown in Figure 2, the secondary absorber 16, unit promptly becomes the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units (as shown in Figure 4) that only is provided with generation-condenser segmentation dividing plate 9.
In the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units that is provided with evaporation-absorber segmentation dividing plate 17, but the cooling water flow path serial flow of multisection type secondary absorber (as Fig. 2, Fig. 3 and shown in Figure 4), flow process also in parallel (as shown in Figure 5).
In the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units, hot water is flow process in parallel (hot water turnover in parallel first-stage generator and second-stage generator), as Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, also serial flow (hot water series connection turnover first-stage generator and second-stage generator), as shown in Figure 6.
Claims (4)
1, a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units, this unit comprises first heat exchanger (3), second heat exchanger (7), first-stage generator (4), one-level absorber (5), second-stage generator (8), condenser (12), evaporimeter (20), secondary absorber (16), solution pump, cryogenic fluid pump and connect the pipeline of each parts, valve, second-stage generator of unit (8) and condenser (12) are arranged in the cylindrical shell, first-stage generator (4), one-level absorber (5), evaporimeter (20) and secondary absorber (14) are arranged in another cylindrical shell, it is characterized in that: in second-stage generator (8), be provided with one or more generation-condenser segmentation dividing plate (9) in the condenser (12), with second-stage generator (16), condenser (12) is separated into two sections or multi-segment structure, described generation-condenser segmentation dividing plate (9) is provided with generator cloth liquid bath (10), and generator cloth liquid bath (10) bottom is provided with liquid distributing hole.
2, a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units according to claim 1, it is characterized in that: in evaporimeter (20), secondary absorber (16), be provided with one or more evaporation-absorber segmentation dividing plate (17), evaporimeter (20), secondary absorber (16) are separated into two sections or multi-segment structure, described evaporation-absorber segmentation dividing plate (17) is provided with evaporimeter cloth tank (15) and absorber cloth liquid bath (18), evaporimeter cloth tank (15) bottom is provided with water distributing pore, and absorber cloth liquid bath (18) bottom is provided with liquid distributing hole.
3, a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units according to claim 2, it is characterized in that: in the hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units that is provided with evaporation-absorber segmentation dividing plate (17), the cooling water flow path of multisection type secondary absorber (14) is serial flow or flow process in parallel.
4, according to claim 1,2 or 3 described a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units, it is characterized in that: the hot water of unit is flow process in parallel or serial flow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100394973A CN100344917C (en) | 2006-04-05 | 2006-04-05 | Hot water two-stage multi-section lithium bromide absorption cold-water machine set |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100394973A CN100344917C (en) | 2006-04-05 | 2006-04-05 | Hot water two-stage multi-section lithium bromide absorption cold-water machine set |
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| CN1831451A CN1831451A (en) | 2006-09-13 |
| CN100344917C true CN100344917C (en) | 2007-10-24 |
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| CN103123180B (en) * | 2011-11-17 | 2015-07-01 | 李华玉 | Fractional condensation second-category absorption heat pump |
| WO2013075260A1 (en) * | 2011-11-21 | 2013-05-30 | Li Huayu | Second-type absorption heat pump with fractional condensation |
| WO2013075259A1 (en) * | 2011-11-21 | 2013-05-30 | Li Huayu | Double-effect, waste heat driven third-type absorption heat pump |
| CN103759354B (en) * | 2014-01-07 | 2016-08-31 | 广州万宝集团有限公司 | A kind of Driven by Solar Energy two-stage BrLi chiller air conditioning system |
| CN103808059B (en) * | 2014-02-17 | 2015-12-16 | 双良节能系统股份有限公司 | Secondary generation secondary absorbs Equations of The Second Kind lithium bromide absorption type heat pump unit |
| CN103822395A (en) * | 2014-02-19 | 2014-05-28 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorbing typed cold and hot water unit for producing high temperature hot water |
| CN105650930B (en) * | 2016-03-01 | 2018-09-25 | 双良节能系统股份有限公司 | The two-period form fume hot-water type lithium bromide absorption refrigerating set being segmented up and down |
| CN105650929B (en) * | 2016-03-01 | 2018-09-25 | 双良节能系统股份有限公司 | Two-period form fume hot-water type lithium bromide absorption refrigerating set with flue gas heat-exchange unit |
| CN105650928B (en) * | 2016-03-01 | 2018-09-25 | 双良节能系统股份有限公司 | Two-period form fume hot-water type lithium-bromide absorption-type refrigerating machine with flue gas heat-exchange unit |
| CN107687721B (en) * | 2017-09-26 | 2023-08-25 | 双良节能系统股份有限公司 | Hot water type lithium bromide absorption chiller with single effect generating solution parallel connection |
| CN113587473B (en) * | 2021-08-10 | 2022-10-21 | 安徽普泛能源技术有限公司 | Compound absorption type system |
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| US5946937A (en) * | 1998-01-14 | 1999-09-07 | Gas Research Institute | Dual loop triple effect absorption chiller utilizing a common evaporator circuit |
| JP2002277091A (en) * | 2001-03-19 | 2002-09-25 | Mitsubishi Heavy Ind Ltd | Absorption refrigerator and method for operating the same |
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| US4732008A (en) * | 1986-11-24 | 1988-03-22 | The United States Of America As Represented By The United States Department Of Energy | Triple effect absorption chiller utilizing two refrigeration circuits |
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| CN1831451A (en) | 2006-09-13 |
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Owner name: SHUANGLIANG ECO-ENERGEY SYSTEMS CO.,LTD. Free format text: FORMER OWNER: SHUANGLIANG AIR CONDITIONING EQUIPMENT CO LTD, JIANGSU Effective date: 20100910 |
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Effective date of registration: 20100910 Address after: 214444 Li Gang Town, Jiangsu City, Jiangyin Province Patentee after: Shuangliang Energy Saving System Co., Ltd. Address before: 214444 Li Gang Town, Jiangsu City, Jiangyin Province Patentee before: Shuangliang Air Conditioning Equipment Co., Ltd., Jiangsu |