CN101403548B - Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function - Google Patents
Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function Download PDFInfo
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- CN101403548B CN101403548B CN2008101954986A CN200810195498A CN101403548B CN 101403548 B CN101403548 B CN 101403548B CN 2008101954986 A CN2008101954986 A CN 2008101954986A CN 200810195498 A CN200810195498 A CN 200810195498A CN 101403548 B CN101403548 B CN 101403548B
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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
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- 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
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- 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 invention relates to a first type lithium bromide absorption heat pump unit with double-effect refrigeration function, comprising a high-pressure steam generator (1), a composite generator (10), an evaporator (6), an absorber (5), a condenser (9), a high temperature heat exchanger (2), a heat exchanger (3) for condensate solution, a low temperature heat exchanger (4), a solution pump (7) and a cryogenic fluid pump (8). A steam heat exchanger pipe bundle (14) and a low heat exchanger pipe bundle (12) are both arranged in a cylinder to form the composite generator (10); a sprayer (15) for the dilute solution to enter into the composite generator and a dilute solution switching valve II (18) are both added at an entrance of the low temperature solution heat exchanger (4); a dilute solution switching valve I (17), a working steam switching valve I (21), a working steam switching valve II (22), a concentrated solution control valve (19) and a cryogen water adjusting device (20) are added on corresponding pipelines. With double-effect refrigeration operation function in summer, the first type lithium bromide absorption heat pump unit with double-effect refrigeration can not only meet the functions of refrigeration in summer and heating in winter, but also greatly save the energy.
Description
(1) technical field
The present invention relates to a kind of steam type first-class lithium bromide absorption type heat pump unit with dual-effect refrigeration function.Belong to technical field of refrigeration equipment.
(2) background technology
At present China in the oil field, there are a large amount of dried up, technique waste waters that divide as recovering the oil in industries such as chemical industry, metallurgy, coking, the low-grade heat source below 60 ℃ that low temperature waste heat water etc. are a large amount of, we need the thermal source of a large amount of middle temperature again in production technology simultaneously, the thermal release that adds as the oil water mixture in DP technology, heating crude oil is carried, and production wellhead recharges and adds hot water etc.China needs a large amount of middle warm water's heating regional winter to the north of the Yellow River in addition.In production technology and life, need thermal source, the zone of low temperature exhaust heat is arranged again simultaneously, adopt first kind lithium bromide absorption type heat pump unit to extract the heat of low temperature exhaust heat, provide, can save a large amount of fuel than warm source in high 40～60 ℃ of the low-temperature heat source.In some occasions that adopts first kind lithium bromide absorption type heat pumps to carry out winter heating or technology heating, wish that when summer source pump can refrigerating operaton, air-conditioning or technology low-temperature cold water are provided, accomplish a machine dual-purpose, reduce investment outlay.
Steam double-effect type lithium-bromide absorption-type refrigerating machine group (as Fig. 1) is made of high pressure generator, low pressure generator, condenser, evaporimeter, absorber, high-temperature solution heat exchanger, cryogenic fluid heat exchanger, the pipeline, the valve that coagulate aqueous solution heat exchanger, solution pump, cryogenic fluid pump, control system (not shown) and connect each parts, walks economic benefits and social benefits and moves.Steam type first-class lithium bromide absorption type heat pump unit (as Fig. 2) is made of generator, condenser, evaporimeter, absorber, solution heat exchanger, solution pump, cryogenic fluid pump, control system (not shown) and the pipeline, the valve that connect each parts, walks the single-action operation.Because the heating COP and can reach 1.8 of first kind lithium bromide absorption type heat pump unit, when heating operation, compare and to save 45% with Boiler heating.If adopt the identical flow process refrigeration of first kind lithium bromide absorption type heat pump unit, can only walk the single-action operation, because the driving heat source grade that first kind lithium bromide absorption type heat pump provides is higher, major part is above steam or other high temperature heat source of 0.4Mpa, when refrigeration, can walk the economic benefits and social benefits operation fully, the refrigeration COP of single-action operation is about 0.8, the refrigeration COP of economic benefits and social benefits operation can reach 1.4, compare with economic benefits and social benefits, the single-action operation needs the high-grade energies 75% that consume more, all adopt first kind lithium bromide absorption type heat pump to heat the energy of being saved, and just have been wasted when single-action in summer refrigeration.In order to satisfy unit refrigeration in summer and winter heating function, save simultaneously the energy again to greatest extent, steam type first-class lithium bromide absorption type heat pump must possess the function of dual-effect refrigeration operation in summer, because the pressure range of operation of heat pump operating mode and each parts of dual-effect refrigeration operating condition is very big, need solution that the two operating mode is realized on a unit.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of steam type first-class lithium bromide absorption type heat pump unit that possesses the band dual-effect refrigeration function of dual-effect refrigeration operation function in summer is provided.
The object of the present invention is achieved like this: a kind of steam type first-class lithium bromide absorption type heat pump unit with dual-effect refrigeration function, described unit comprises steam high pressure generator, compound generator, evaporimeter, absorber, condenser, high-temperature heat exchanger, coagulates aqueous solution heat exchanger, cryogenic fluid heat exchanger, solution pump and cryogenic fluid pump
Described compound generator is that steam heat-exchanging tube bank and the low heat-exchanging tube bundle of sending out are placed into the compound generator of formation in the cylindrical shell, described steam heat-exchanging tube bank import is advanced compound generator tube by working steam and is connected with working steam, described low import and the outlet of sending out heat-exchanging tube bundle is connected with the steam (vapor) outlet and the condenser at steam high pressure generator top respectively
Set up a weak solution at described cryogenic fluid heat exchanger outlet and advance compound generator shower, and advance a weak solution transfer valve II is set on the compound generator shower in this weak solution, open at operation of heat pump operating mode weak solution transfer valve II, close in the dual-effect refrigeration operating mode; Go out on the pipeline that the cryogenic fluid heat exchanger advances aqueous solution heat exchanger with fixed attention a weak solution transfer valve I is set in weak solution, I closes at heat pump heating condition weak solution transfer valve, opens when the dual-effect refrigeration operating mode; Advance a working steam transfer valve I is set on the compound generator tube at working steam; Advance a working steam transfer valve II is set on the high pressure generator pipe at working steam, in the heat pump operating mode, the working steam transfer valve I that working steam advances compound generator pipeline opens, the working steam transfer valve II that working steam advances the high pressure generator pipe closes, at the dual-effect refrigeration operating condition, the working steam transfer valve I that working steam enters the steam generator road closes, and the working steam transfer valve II that working steam advances the high pressure generator pipeline opens.Pressure reduction during according to dual-effect refrigeration between compound generator and condenser and evaporimeter, absorber is much smaller than the heat pump heating condition, and the solution of two kinds of operating modes also has different with the flow of water as refrigerant, the concentrated solution control valve is set on the pipeline before concentrated solution is advanced absorber, advance at the condenser water as refrigerant on the pipeline of evaporimeter the water as refrigerant adjusting device is set, the regulator solution internal circulating load and the cryogen water yield guarantee all can satisfy operation under two kinds of operating modes.
The switching of the present invention by weak solution transfer valve I, weak solution transfer valve II, working steam transfer valve I, working steam transfer valve II guarantees that a class heat pump heating condition and dual-effect refrigeration operating condition inner loop flow process are with original identical, by regulating concentrated solution control valve, water as refrigerant adjusting device, adapt to the variation of the two operating mode internal pressure and flow simultaneously.
Unit of the present invention possesses the function of dual-effect refrigeration operation in summer, has both satisfied unit refrigeration in summer and winter heating function, saves the energy simultaneously again to greatest extent.
(4) description of drawings
Fig. 1 is steam double-effect type lithium-bromide absorption-type refrigerating machine group schematic diagram in the past.
Fig. 2 is steam type first-class lithium bromide absorption type heat pump unit schematic diagram in the past.
Fig. 3 is steam type first-class lithium bromide absorption type heat pump unit embodiment 1 schematic diagram of band dual-effect refrigeration function of the present invention.
Fig. 4 is steam type first-class lithium bromide absorption type heat pump unit embodiment 2 schematic diagrames of band dual-effect refrigeration function of the present invention.
Among the figure: steam high pressure generator 1, high-temperature heat exchanger 2, coagulate aqueous solution heat exchanger 3, cryogenic fluid heat exchanger 4, absorber 5, evaporimeter 6, solution pump 7, cryogenic fluid pump 8, condenser 9, compound generator 10, intermediate solution is advanced compound generator shower 11, the low heat-exchanging tube bundle 12 of sending out, working steam advances high pressure generator pipe 13, steam heat-exchanging tube bank 14, weak solution is advanced compound generator shower 15, working steam advances compound generator tube 16, weak solution transfer valve I17, weak solution transfer valve II18, concentrated solution control valve 19, water as refrigerant adjusting device 20, working steam transfer valve I21, working steam transfer valve II22.
(5) specific embodiment
Embodiment 1:
Unit as shown in Figure 3, this unit is on steam double-effect type lithium bromide absorption cold water unit such as Fig. 1 basis in the past, the steam heat-exchanging tube bank 14 of the steam generator of steam type first-class lithium bromide absorption type heat pump such as Fig. 2 and low pressure generator low sent out a heat-exchanging tube bundle 12 be placed into and form compound generator 10 in the cylindrical shell, a steam heat-exchanging tube bank 14 and the low heat-exchanging tube bundle 12 of sending out are arranged up and down.Solution heat exchanger and the shared cryogenic fluid heat exchanger 4 of cryogenic fluid heat exchanger with heat pump.This unit by steam high pressure generator 1, compound generator 10, evaporimeter 6, absorber 5, condenser 9, high-temperature heat exchanger 2, coagulate aqueous solution heat exchanger 3, cryogenic fluid heat exchanger 4, solution pump 7, cryogenic fluid pump 8, control system is not shown and connects the steam type first-class lithium bromide absorption type heat pump unit of the band dual-effect refrigeration function that pipeline, valve constituted of each parts.Set up a weak solution in 4 outlets of cryogenic fluid heat exchanger and advance compound generator shower 15, and advance a weak solution transfer valve II18 is set on the compound generator shower 15 in this weak solution, go out cryogenic fluid heat exchanger 4 in weak solution and advance with fixed attention and on aqueous solution heat exchanger 3 pipelines weak solution transfer valve I17 is set.Advance working steam transfer valve I21 is set on the compound generator tube 16 at working steam, advance the high pressure generator pipeline at working steam working steam transfer valve II22 is set, concentrated solution control valve 19 (be arranged on the pipeline before or after the cryogenic fluid heat exchanger into all can) is set on the pipeline before concentrated solution is advanced absorber, advances at condenser 9 water as refrigerants on the pipeline of evaporimeter 6 water as refrigerant adjusting device 20 is set.When a class heat pump heating condition moves, working steam transfer valve II22, weak solution transfer valve I17 close, working steam transfer valve I21, weak solution transfer valve II18 open, weak solution was advanced compound generator shower 15 and was directly entered compound generator 10 through cryogenic fluid heat exchanger 4, weak solution this moment, was condensed into concentrated solution by steam heat-exchanging tube bank 14 heating in the compound generator 10.High pressure generator 1, high-temperature solution heat exchanger 2, coagulating low in aqueous solution heat exchanger 3 and the compound generator 10, to send out heat-exchanging tube bundle 12 inoperative, and unit is finished the process flow operation according to the first kind lithium bromide absorption type heat pump of routine.Because the pressure reduction between compound generator of heat pump heating condition and condenser and evaporimeter, absorber is big, concentrated solution control valve 19 and water as refrigerant adjusting device 20 turn down.When the dual-effect refrigeration operating mode is moved, opposite with a class heat pump heating condition, working steam transfer valve II22, weak solution transfer valve I17 open, working steam transfer valve I21, weak solution transfer valve II18 close, this moment weak solution through cryogenic fluid heat exchanger 4, coagulate aqueous solution heat exchanger 3, high-temperature solution heat exchanger 2 enters 1 heating of steam high pressure generator and concentrates.Intermediate solution after concentrating is advanced compound generator shower 11 through high-temperature solution heat exchanger, intermediate solution and is sprayed compound generator 10 interior hanging down on the heat-exchanging tube bundle 12, is heated by the low heat-exchanging tube bundle 12 in the compound generator 10 to be condensed into concentrated solution.It is 14 inoperative that steam heat-exchangings in this moment compound generator 10 are restrained, and unit is fully according to the process flow operation of the dual effect type lithium bromide absorbing type refrigeration of routine.Because the pressure reduction during the dual-effect refrigeration operating mode between compound generator and condenser and evaporimeter, absorber is little, concentrated solution control valve 19 and water as refrigerant adjusting device 20 are opened greatly.
Embodiment 2: as Fig. 4, on the basis of invention one, steam heat-exchanging tube bank 14 and the low heat-exchanging tube bundle about 12 of sending out are arranged.When the heat pump heating condition, weak solution is advanced compound generator shower 15 by weak solution and is sprayed in the steam heat-exchanging tube bank 14.When the dual-effect refrigeration operating mode, the intermediate solution that high pressure generator 1 is come is advanced compound generator shower 11 by intermediate solution and is sprayed hanging down on the heat-exchanging tube bundle 12 in the compound generator 10.
Such scheme is applicable to the pattern of condenser, evaporimeter, absorber two segment types.Hot water (cooling water) flow process in parallel, serial flow.Driving heat source not only can be a steam, also can be high-temperature-hot-water, heat conduction wet goods.
Claims (6)
1. steam type first-class lithium bromide absorption type heat pump unit with dual-effect refrigeration function, it is characterized in that described unit comprises steam high pressure generator (1), compound generator (10), evaporimeter (6), absorber (5), condenser (9), high-temperature heat exchanger (2), coagulates aqueous solution heat exchanger (3), cryogenic fluid heat exchanger (4), solution pump (7) and cryogenic fluid pump (8)
Described compound generator (10) is that steam heat-exchanging tube bank (14) and the low heat-exchanging tube bundle (12) of sending out are placed into formation compound generator (10) in the cylindrical shell, described steam heat-exchanging tube bank (14) import is advanced compound generator tube (16) by working steam and is connected with working steam, described low import and the outlet of sending out heat-exchanging tube bundle (12) is connected with the steam (vapor) outlet and the condenser (9) at steam high pressure generator (1) top respectively
Set up a weak solution in described cryogenic fluid heat exchanger (4) outlet and advance compound generator shower (15), and advance a weak solution transfer valve II (18) is set on the compound generator shower (15) in this weak solution; Go out on the pipeline that cryogenic fluid heat exchanger (4) advances aqueous solution heat exchanger (3) with fixed attention a weak solution transfer valve I (17) is set in weak solution; Advance a working steam transfer valve I (21) is set on the compound generator tube (16) at working steam; Advance a working steam transfer valve II (22) is set on the high pressure generator pipe (13) at working steam; Advance on the preceding pipeline of absorber (5) concentrated solution control valve (19) is set in concentrated solution; Advance at condenser (9) water as refrigerant on the pipeline of evaporimeter (6) water as refrigerant adjusting device (20) is set.
2. a kind of steam type first-class lithium bromide absorption type heat pump unit with dual-effect refrigeration function according to claim 1 is characterized in that described steam heat-exchanging is restrained (14) and the low heat-exchanging tube bundle (12) of sending out is arranged up and down in the cylindrical shell of compound generator (10).
3. a kind of steam type first-class lithium bromide absorption type heat pump unit with dual-effect refrigeration function according to claim 1 is characterized in that arranging about a described steam heat-exchanging tube bank (14) and a low heat-exchanging tube bundle (12) are in the cylindrical shell of compound generator (10).
4. according to claim 1,2 or 3 described a kind of steam type first-class lithium bromide absorption type heat pump units, it is characterized in that described concentrated solution control valve (19) is arranged on the pipeline before or after the cryogenic fluid heat exchanger (4) into dual-effect refrigeration function.
5. according to claim 1,2 or 3 described a kind of steam type first-class lithium bromide absorption type heat pump units, it is characterized in that condenser (9), evaporimeter (6) and the absorber (5) of described unit is two segment structures with dual-effect refrigeration function.
6. according to claim 1,2 or 3 described a kind of steam type first-class lithium bromide absorption type heat pump units, it is characterized in that the hot water of described unit or cooling water are parallel-connection structure or cascaded structure with dual-effect refrigeration function.
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| CN2008101954986A CN101403548B (en) | 2008-10-15 | 2008-10-15 | Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function |
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| CN2008101954986A CN101403548B (en) | 2008-10-15 | 2008-10-15 | Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function |
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| CN101403548B true CN101403548B (en) | 2011-07-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101825371A (en) * | 2010-05-10 | 2010-09-08 | 江苏双良空调设备股份有限公司 | High-efficiency steam double-effect lithium bromide absorption type water chilling unit |
| CN103471283B (en) * | 2013-09-15 | 2015-11-25 | 李华玉 | Branch-cycle first-class absorption type heat pump |
| CN104075485A (en) * | 2014-07-03 | 2014-10-01 | 李建峰 | Hot dry rock double-effect lithium bromide absorption heat pump heating system |
| CN106931678A (en) * | 2017-04-14 | 2017-07-07 | 双良节能系统股份有限公司 | Steam type first-class lithium bromide absorption type heat pump unit with refrigerating function |
| CN110173923A (en) * | 2019-06-18 | 2019-08-27 | 双良节能系统股份有限公司 | A kind of two-period form lithium bromide absorption type heat pump unit of single-action heating double-effect refrigeration |
| CN110173922B (en) * | 2019-06-18 | 2024-04-05 | 双良节能系统股份有限公司 | Steam type lithium bromide absorption heat pump unit capable of double-effect refrigeration |
| CN110173927B (en) * | 2019-06-24 | 2024-04-23 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorption refrigerator with single-effect heat pump heating function |
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| CN201297798Y (en) * | 2008-10-15 | 2009-08-26 | 江苏双良空调设备股份有限公司 | First-kind lithium bromide absorption heat pump unit with double-effect refrigeration function |
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| CN201297798Y (en) * | 2008-10-15 | 2009-08-26 | 江苏双良空调设备股份有限公司 | First-kind lithium bromide absorption heat pump unit with double-effect refrigeration function |
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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: 20100913 |
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Effective date of registration: 20100913 Address after: 214444 Jiangsu city of Jiangyin Province Li Town No. 1 West Applicant after: Shuangliang Energy Saving System Co., Ltd. Address before: 214444 Jiangsu city of Jiangyin Province Li Town No. 1 West Applicant before: Shuangliang Air Conditioning Equipment Co., Ltd., Jiangsu |
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