CN1831452A - Hot-water two-stage multi-section lithium bromide absorption cold-water machine set - Google Patents
Hot-water two-stage multi-section lithium bromide absorption cold-water machine set Download PDFInfo
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- CN1831452A CN1831452A CNA2006100394988A CN200610039498A CN1831452A CN 1831452 A CN1831452 A CN 1831452A CN A2006100394988 A CNA2006100394988 A CN A2006100394988A CN 200610039498 A CN200610039498 A CN 200610039498A CN 1831452 A CN1831452 A CN 1831452A
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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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- Sorption Type Refrigeration Machines (AREA)
Abstract
A cold water machine set of hot water two - stage multisection type applying lithium bromide absorption mode consists of the first heat exchanger, the second heat exchanger, primary generator, secondary generator, primary absorber, secondary absorber, condenser, evaporator, solution pump, cryogen pump, piping and valves. It is featured as setting secondary generator and condenser in one cylinder and setting primary generator, primary absorber, evaporator and secondary absorber in another cylinder; setting one or multiple evaporation - absorber sectional isolation plate in evaporator and secondary absorber to isolate them to be two - section or multiple - section structure.
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 novel 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 novel 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; 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.Its concrete grammar is:
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.
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, 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:
Unit as shown in Figure 2, this unit are 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 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 connect 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 16 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 14 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.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, enter in the condenser heat exchanger tube from the cooling water outside, that temperature is lower, the refrigerant vapour heat exchange outer with heat exchanger tube heats up.Hot water enters in second-stage generator 8 heat exchanger tubes, the outer lithium-bromide solution heat exchange cooling of heating tube.Send into the weak solution of second-stage generator heat-exchanging tube bundle top spray by secondary generating pump 1, the hot water heating produces refrigerant vapour, temperature and concentration rising in manage.
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.
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 (figure is slightly), flow process also in parallel (figure is slightly).
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), figure slightly, also serial flow (hot water series connection turnover first-stage generator and second-stage generator), figure slightly.
Claims (5)
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 (16) 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 evaporimeter (20), be provided with one or more evaporation-absorber segmentation dividing plate (17) in the secondary absorber (16), with evaporimeter (20), secondary absorber (16) is separated into multi-segment structure.
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: 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 1 and 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, a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units according to claim 1 and 2, it is characterized in that: the hot water of unit is flow process in parallel or serial flow.
5, a kind of hot-water two-stage multi-section lithium bromide absorption handpiece Water Chilling Units according to claim 3, it is characterized in that: the hot water of unit is flow process in parallel or serial flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100394988A CN1831452A (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 |
|---|---|---|---|
| CNA2006100394988A CN1831452A (en) | 2006-04-05 | 2006-04-05 | Hot-water two-stage multi-section lithium bromide absorption cold-water machine set |
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| CN1831452A true CN1831452A (en) | 2006-09-13 |
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| CNA2006100394988A Pending CN1831452A (en) | 2006-04-05 | 2006-04-05 | Hot-water two-stage multi-section lithium bromide absorption cold-water machine set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047791A (en) * | 2012-12-07 | 2013-04-17 | 张跃 | Low-temperature flue gas double-effect lithium bromide absorption water chilling unit and double-effect refrigeration method |
| CN103808059A (en) * | 2014-02-17 | 2014-05-21 | 双良节能系统股份有限公司 | Secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit |
| CN108627045A (en) * | 2017-03-17 | 2018-10-09 | 赤峰和然节能设备有限责任公司 | The method for preventing absorption heat exchange device bronze pan tube from corroding |
-
2006
- 2006-04-05 CN CNA2006100394988A patent/CN1831452A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047791A (en) * | 2012-12-07 | 2013-04-17 | 张跃 | Low-temperature flue gas double-effect lithium bromide absorption water chilling unit and double-effect refrigeration method |
| CN103808059A (en) * | 2014-02-17 | 2014-05-21 | 双良节能系统股份有限公司 | Secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit |
| CN108627045A (en) * | 2017-03-17 | 2018-10-09 | 赤峰和然节能设备有限责任公司 | The method for preventing absorption heat exchange device bronze pan tube from corroding |
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