CN101403547B - First-class lithium bromide absorption type heat pump units with dual-effect refrigeration function - Google Patents

First-class lithium bromide absorption type heat pump units with dual-effect refrigeration function Download PDF

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CN101403547B
CN101403547B CN2008101954971A CN200810195497A CN101403547B CN 101403547 B CN101403547 B CN 101403547B CN 2008101954971 A CN2008101954971 A CN 2008101954971A CN 200810195497 A CN200810195497 A CN 200810195497A CN 101403547 B CN101403547 B CN 101403547B
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solution
heat exchanger
steam
heat
generator
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CN101403547A (en
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毛洪财
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Shuangliang Eco Energy Systems Co Ltd
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Jiangsu Shuangliang Air Conditioning Equipment Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems

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 heat exchanger (20), a solution pump (7) and a cryogenic fluid pump (8). For the composite generator (10), a steam heat exchanger pipe bundle (14) and a low heat exchanger pipe bundle (12) are arranged in a cylinder, and a sprayer (15) for the dilute solution to enter into the composite generator is added at an entrance of the solution heat exchanger (20); a dilute solution switching valve I (17), a dilute solution switching valve II (21), a concentrated solution switching valve I (18), a concentrated solution switching valve II (19), a working steam switching valve I (23), a working steam switching valveII (24) and a cryogen water adjusting device (22) 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

A kind of first kind lithium bromide absorption type heat pump unit with dual-effect refrigeration function
(1) technical field
The present invention relates to a kind of first kind 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 a kind of first kind lithium bromide absorption type heat pump unit with dual-effect refrigeration function that possesses dual-effect refrigeration operation function in summer is provided.
The object of the present invention is achieved like this: a kind of first kind 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, low temperature heat exchanger, solution 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 in the solution heat exchanger outlet and advance compound generator shower; Advancing low temperature heat exchanger and weak solution in weak solution advances on the pipeline of solution heat exchanger weak solution transfer valve I and weak solution transfer valve II are set respectively; Advance or go out in the concentrated solution of compound generator on the concentrated solution pipeline of low temperature heat exchanger concentrated solution transfer valve I is set, advance or go out in the concentrated solution of compound generator on the concentrated solution pipeline of solution heat exchanger concentrated solution transfer valve II is set.
Close at heat pump heating condition weak solution transfer valve I and concentrated solution transfer valve I, weak solution transfer valve II and concentrated solution transfer valve II open, and the heat pump that solution is walked standard heats circulation.When the dual-effect refrigeration operating mode, weak solution transfer valve I and concentrated solution transfer valve I open, and weak solution transfer valve II and concentrated solution transfer valve II close, and solution is walked the dual-effect refrigeration circulation of standard.Advance working steam transfer valve I is set on the compound generator tube at working steam, advance 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 it is different that the solution of two kinds of operating modes and the flow of water as refrigerant also have, and advances at the condenser water as refrigerant on the pipeline of evaporimeter the water as refrigerant adjusting device is set.Regulate the cryogen water yield, guarantee under two kinds of operating modes, all can satisfy operation.
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 the 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 a kind of first kind lithium bromide absorption type heat pump unit embodiment 1 schematic diagram with dual-effect refrigeration function of the present invention.
Fig. 4 is a kind of first kind lithium bromide absorption type heat pump unit embodiment 2 schematic diagrames with 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, low temperature 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, concentrated solution transfer valve I18, concentrated solution transfer valve II19, solution heat exchanger 20, weak solution transfer valve II21, water as refrigerant adjusting device 22, working steam transfer valve I23, working steam transfer valve II24.
(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.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, low temperature heat exchanger 4, solution heat exchanger 20, solution pump 7, cryogenic fluid pump 8, control system is not shown and connects a kind of first kind lithium bromide absorption type heat pump unit that pipeline, valve constituted of each parts with dual-effect refrigeration function.Set up a weak solution in solution heat exchanger 20 outlets and advance compound generator shower 15.With the high-temperature heat exchanger 2 of the solution heat exchanger 20 of heat pump and cooling condition, coagulate aqueous solution heat exchanger 3, low temperature heat exchanger 4 is independently opened fully, carries out switchover operation with valve.Advancing low temperature heat exchanger 4 and weak solution in weak solution advances on the pipeline of solution heat exchanger 20 weak solution transfer valve I17 and weak solution transfer valve II21 are set respectively.Advance or go out in the concentrated solution of compound generator 10 on the concentrated solution pipeline of low temperature heat exchanger 4 concentrated solution transfer valve I18 is set, advance or go out in the concentrated solution of compound generator 10 on the concentrated solution pipeline of solution heat exchanger 20 concentrated solution transfer valve II19 is set.Advance working steam transfer valve I23 is set on the compound generator tube 16 at working steam, advance working steam transfer valve II24 is set on the high pressure generator pipe 13 at working steam.Advance at condenser 9 water as refrigerants on the pipeline of evaporimeter 6 water as refrigerant adjusting device 22 is set.When a class heat pump heating condition moves, working steam transfer valve II24, weak solution transfer valve I17 and concentrated solution transfer valve I18 close, working steam transfer valve I23, weak solution transfer valve II21 and concentrated solution transfer valve II19 open, weak solution was advanced compound generator shower 15 through solution heat exchanger 20 and weak solution and was directly entered compound generator 10 this moment, was condensed into concentrated solution by steam heat-exchangings 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, low temperature heat exchanger 4 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 the compound generator of heat pump heating condition and condenser and evaporation absorber is big, water as refrigerant adjusting device 22 turns down.When the dual-effect refrigeration operating mode is moved, opposite with a class heat pump heating condition, working steam transfer valve II24, weak solution transfer valve I17 and concentrated solution transfer valve I18 open, working steam transfer valve I23, weak solution transfer valve II21 and concentrated solution transfer valve II19 close, this moment weak solution through low temperature 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 and is entered compound generator 10 through high-temperature heat exchanger 2, intermediate solution, is condensed into concentrated solution by a low heat-exchanging tube bundle 12 heating in the compound generator 10.It is 14 inoperative that steam heat-exchangings in this moment solution heat exchanger 20, the 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 evaporation absorber is little, water as refrigerant adjusting device 22 is opened greatly.
Embodiment 2: as Fig. 4, on the basis of embodiment 1, 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 low sending out on the heat-exchanging tube bundle 12.
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 (5)

1. first kind 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), low temperature heat exchanger (4), solution heat exchanger (20), 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 solution heat exchanger (20) outlet and advance compound generator shower (15); Advancing low temperature heat exchanger (4) and weak solution in weak solution advances on the pipeline of solution heat exchanger (20) weak solution transfer valve I (17) and weak solution transfer valve II (21) are set respectively; Advance or go out in the concentrated solution of compound generator (10) on the concentrated solution pipeline of low temperature heat exchanger (4) concentrated solution transfer valve I (18) is set, advance or go out in the concentrated solution of compound generator (10) on the concentrated solution pipeline of solution heat exchanger (20) concentrated solution transfer valve II (19) is set; Advance working steam transfer valve I (23) is set on the compound generator tube (16) at working steam, advance working steam transfer valve II (24) is set on the high pressure generator pipe (13) at working steam, advance at condenser (9) water as refrigerant on the pipeline of evaporimeter (6) water as refrigerant adjusting device (22) is set.
2. a kind of first kind 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 first kind 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 first kind 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.
5. according to claim 1,2 or 3 described a kind of first kind lithium bromide absorption type heat pump units with dual-effect refrigeration function, the driving heat source that it is characterized in that described unit is steam or high-temperature-hot-water or conduction oil.
CN2008101954971A 2008-10-15 2008-10-15 First-class lithium bromide absorption type heat pump units with dual-effect refrigeration function Active CN101403547B (en)

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Publication number Priority date Publication date Assignee Title
CN101866187B (en) * 2010-06-02 2013-04-17 大连三洋制冷有限公司 Lithium bromide absorption type first-class heat pump unit device and control method thereof
CN102997483B (en) * 2012-12-27 2014-08-20 双良节能系统股份有限公司 Direct-burning lithium bromide absorbing cold hot water unit capable of recycling smoke waste heat
CN105571194B (en) * 2015-12-24 2018-05-08 希望深蓝空调制造有限公司 Suction-type lithium bromide combines heat pump
CN106482382B (en) * 2016-11-14 2019-06-07 双良节能系统股份有限公司 Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating
CN106482381B (en) * 2016-11-14 2019-06-07 双良节能系统股份有限公司 The steam type first-class lithium bromide absorption type heat pump unit of carrying vapour direct heating

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Publication number Priority date Publication date Assignee Title
CN201297797Y (en) * 2008-10-15 2009-08-26 江苏双良空调设备股份有限公司 Novel first-kind lithium bromide absorption heat pump unit with double-effect refrigeration function

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201297797Y (en) * 2008-10-15 2009-08-26 江苏双良空调设备股份有限公司 Novel first-kind lithium bromide absorption heat pump unit with double-effect refrigeration function

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