CN104764244A - Absorption heat pump unit, heat exchanger unit and heating system - Google Patents
Absorption heat pump unit, heat exchanger unit and heating system Download PDFInfo
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- CN104764244A CN104764244A CN201510202583.0A CN201510202583A CN104764244A CN 104764244 A CN104764244 A CN 104764244A CN 201510202583 A CN201510202583 A CN 201510202583A CN 104764244 A CN104764244 A CN 104764244A
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- absorber
- heat pump
- pump assembly
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 69
- 238000010438 heat treatment Methods 0.000 title claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 144
- 239000006096 absorbing agent Substances 0.000 claims abstract description 74
- 239000003507 refrigerant Substances 0.000 claims abstract description 61
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 25
- 230000008676 import Effects 0.000 claims description 19
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 229940059936 lithium bromide Drugs 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- 238000009833 condensation Methods 0.000 description 9
- 230000005494 condensation Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/126—Absorption type heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2315/00—Sorption refrigeration cycles or details thereof
- F25B2315/007—Parallel systems therefor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to an absorption heat pump unit, a heat exchange unit and a heat supply system, wherein the absorption heat pump unit comprises a generator, a condenser, an absorber, an evaporator and a solution heat exchanger; the absorber at least comprises a first absorber and a second absorber, the evaporator at least comprises a first evaporator and a second evaporator, a solution outlet of the first absorber is communicated with a solution inlet of the second absorber, and a refrigerant water outlet of the first evaporator is communicated with a refrigerant water inlet of the second evaporator. The invention can improve the overall thermal perfection and reduce the primary backwater temperature by arranging a plurality of absorbers and evaporators.
Description
Technical field
The present invention relates to technical field of heat exchange, particularly relate to a kind of absorption type heat pump assembly, heat-exchange unit and heating system.
Background technology
The application of thermal power cogeneration central heating system in northern China urban heating is very general.Reduce a secondary net return water temperature of central heating system, the condensation heat being conducive to recovery cogeneration of heat and power thermal source place, for heat supply, significantly can promote the efficiency of co-generation unit.
Heating system of the prior art has adopted the heat-exchange unit with absorption heat pump, and the heat-exchange unit with absorption heat pump can reduce a secondary net return water temperature at each thermal substation of heat supply network.But the heat pump type heat exchanging unit of simple Absorption heat-transformer, single-stage, when a secondary net supply water temperature lower (as 100 DEG C ~ 110 DEG C), only a secondary net return water temperature can be down to more than 30 DEG C, not enough to the cooling capacity of a secondary net backwater, the condenser thermal Finite reclaimed at thermal source place.
Also has another kind of combined type heat-exchange unit at present, it has the compression type heat pump assembly of external series, a secondary net return water temperature can be reduced further, but need an absorption heat pump and a compression type heat series connection of pumps, cause unit volume increase, cost increase, a secondary net resistance to increase.
Summary of the invention
The object of the invention is to propose a kind of absorption type heat pump assembly, heat-exchange unit and heating system, it can reduce a secondary net return water temperature further, improves the coefficient of heat transfer.
For achieving the above object, the invention provides a kind of absorption type heat pump assembly, it comprises generator, condenser, absorber, evaporimeter and solution heat exchanger; It is characterized in that: described absorber at least comprises the first absorber and the second absorber, described evaporimeter at least comprises the first evaporimeter and the second evaporimeter, the taphole of described first absorber is communicated with the solution inlet port of described second absorber, the water as refrigerant outlet of described first evaporimeter and the water as refrigerant inlet communication of described second evaporimeter.
One preferably or in embodiment, the steam outlet of described generator is connected to the steam import of described condenser by the 5th pipeline, described 5th pipeline is provided with steam compressor.
One preferably or in embodiment, along solution circulation flowing direction, the taphole of described generator is sequentially connected in series the solution inlet port of described solution heat exchanger and described first absorber by the first pipeline, the taphole of described second absorber is sequentially connected in series the solution inlet port of described solution heat exchanger and described generator by the second pipeline.
One preferably or in embodiment, direction is circulated along water as refrigerant, the water as refrigerant outlet of described condenser is connected to the water as refrigerant import of described first evaporimeter by the 3rd pipeline, the water as refrigerant outlet of described second evaporimeter is connected to the water as refrigerant import of described first evaporimeter by the 4th pipeline.
One preferably or in embodiment, the steam import of described first absorber is communicated with the steam outlet of described first evaporimeter, and the steam import of described second absorber is communicated with the steam outlet of described second evaporimeter.
Preferably or in embodiment, described first pipeline is also provided with solution every pressure device one.
Preferably or in embodiment, described 3rd pipeline is also provided with water as refrigerant every pressure device one.
One preferably or in embodiment, the solution in described absorption type heat pump assembly is lithium-bromide solution.
For achieving the above object, present invention also offers a kind of heat-exchange unit, it comprises the absorption type heat pump assembly in above-mentioned any embodiment.
One preferably or in embodiment, also comprise water inlet pipe road, intermediate water inlet pipe road and a water-water heat exchanger, direction is entered along a water, a described water inlet pipe road is connected to a water and goes out pipeline after being sequentially connected in series generator in described absorption type heat pump assembly and described water-water heat exchanger; Described intermediate water inlet pipe road comprises the first branch road and the second branch road that are connected in parallel, direction is entered along intermediate water, after described first branch road is sequentially connected in series absorber in described absorption type heat pump assembly and condenser, be connected to intermediate water and go out pipeline, described second branch road is connected to described intermediate water and goes out pipeline after being sequentially connected in series evaporimeter in described absorption type heat pump assembly and described water-water heat exchanger.
For achieving the above object, present invention also offers a kind of heating system, it comprises the absorption type heat pump assembly in above-mentioned any embodiment or the heat-exchange unit in above-mentioned any embodiment.
Based on technique scheme, the present invention at least has following beneficial effect:
In absorption type heat pump assembly provided by the invention, absorber and evaporimeter all can be provided with two, three or more, evaporation-the absorption process of absorption type heat pump assembly is divided into 2 ~ 3 grades, or it is more multistage, the overall thermodynamic perfect degree of absorption type heat pump assembly can be improved, reduce primary water temperature.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of an illustrative examples of absorption type heat pump assembly provided by the invention;
Fig. 2 is the structural representation of the heat-exchange unit of generation provided by the invention-condensation process band water vapour compressor;
Fig. 3 is the structural representation of the heat-exchange unit of generation provided by the invention-condensation process dry-steam compressor.
Attached number in the figure:
1-generator; 2-condenser; 3-absorber; 31-first absorber; 32-second absorber; 4-evaporimeter; 41-first evaporimeter; 42-second evaporimeter; 5-steam compressor; 6-solution heat exchanger; 7-water-water heat exchanger; 8-water inlet pipe road; 9-intermediate water inlet pipe road; 91-first branch road; 92-second branch road; 10-solution is every pressure device; 11-water as refrigerant is every pressure device; 12-solution circulation pump; 13-water as refrigerant circulating pump.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
As shown in Figure 1, be the illustrative examples of absorption type heat pump assembly provided by the invention, in this illustrative examples, absorption type heat pump assembly comprises generator 1, condenser 2, absorber 3, evaporimeter 4 and solution heat exchanger 6.
Along solution circulation flowing direction, the taphole of generator 1 is sequentially connected in series the solution inlet port of solution heat exchanger 6 and absorber 3 by the first pipeline, the taphole of absorber 3 is sequentially connected in series the solution inlet port of solution heat exchanger 6 and generator 1 by the second pipeline, and the second pipeline is also provided with solution circulation pump 12; Direction is circulated along water as refrigerant, the water as refrigerant outlet of condenser 2 is connected to the water as refrigerant import of evaporimeter 4 by the 3rd pipeline, the water as refrigerant outlet of evaporimeter 4 is connected to the water as refrigerant import of evaporimeter 4 by the 4th pipeline, the 4th pipeline is also provided with water as refrigerant circulating pump 13; The steam outlet of generator 1 is connected to the steam import of condenser 2 by the 5th pipeline; The steam outlet of evaporimeter 4 connects the steam import of absorber 3.
Wherein, absorber 3 at least comprises the first absorber 31 and the second absorber 32, evaporimeter 4 at least comprises the first evaporimeter 41 and the second evaporimeter 42, the taphole of the first absorber 31 is communicated with the solution inlet port of the second absorber 32, the water as refrigerant outlet of the first evaporimeter 41 and the water as refrigerant inlet communication of the second evaporimeter 42.
On the basis of above-mentioned illustrative examples, absorber 3 and evaporimeter 4 all can be provided with two, three or more, evaporation-the absorption process of absorption type heat pump assembly is divided into 2 ~ 3 grades, or it is more multistage, the overall thermodynamic perfect degree of absorption type heat pump assembly can be improved, reduce primary water temperature.
The embodiment enumerated below is to arrange two absorbers 3 and two evaporimeters 4 are described: absorption type heat pump assembly comprises the first absorber 31, second absorber 32, first evaporimeter 41 and the second evaporimeter 42.
The solution inlet port of the first absorber 31 can with the first pipeline connection, the taphole of the first absorber 31 can be communicated with the solution inlet port of the second absorber 32, the taphole of the second absorber 32 can with the second pipeline connection.
The water as refrigerant import of the first evaporimeter 41 can with the 3rd pipeline connection, first evaporimeter 41 water as refrigerant outlet can with the water as refrigerant inlet communication of the second evaporimeter 42, second evaporimeter 42 water as refrigerant outlet can with the 4th pipeline connection, the 4th pipeline can also be connected to the water as refrigerant import of the first evaporimeter 41.
The steam import of the first absorber 31 can be communicated with the steam outlet of the first evaporimeter 41, and the steam import of the second absorber 32 can be communicated with the steam outlet of the second evaporimeter 42.
On the basis of above-mentioned illustrative examples, the 5th pipeline can also be provided with steam compressor 5.Generation-the condensation process of absorption type heat pump assembly increases steam compressor 5, when one time water inlet temperature lower (as 100 DEG C ~ 110 DEG C), the condensing pressure of condenser 2 can be improved, increase condensation number, improve the import solution concentration of absorber 3, increase the uptake of absorber 3 solution and the evaporation capacity of evaporimeter 4 water as refrigerant, thus reduce primary water temperature.
In above-mentioned each illustrative examples, the second pipeline can also be provided with solution every pressure device 10, the 3rd pipeline can also be provided with water as refrigerant every pressure device 11.
Above-mentioned solution all can adopt U-tube every pressure device 10 and water as refrigerant every pressure device 11, that is: the second pipeline and the 3rd pipeline are provided with U-tube, the two ends of U-tube keep certain pressure differential, and solution is similar to linker every pressure device 10 and water as refrigerant every the effect of pressure device 11.
In above-mentioned each illustrative examples, the solution in absorption type heat pump assembly is lithium-bromide solution.
Absorption type heat pump assembly provided by the invention can be applied in heat-exchange unit or heating system.
As shown in Figure 2 and Figure 3, in the illustrative examples that the invention provides heat-exchange unit, heat-exchange unit comprises the absorption type heat pump assembly in above-mentioned any embodiment, also comprises water inlet pipe road 8, intermediate water inlet pipe road 9 and a water-water heat exchanger 7.
Enter direction along a water, water inlet pipe road 8 is connected to a water and goes out pipeline after being sequentially connected in series generator 1 in absorption type heat pump assembly and water-water heat exchanger 7.Primary side hot water releases heat in series through the generator 1 of absorption type heat pump assembly, water-water heat exchanger 7, the resistance that primary side hot water need overcome is evaporimeter 4 sum of water-water heat exchanger 7, absorption type heat pump assembly, relative in prior art, the secondary net resistance that needs overcome is generator 1, water-water heat exchanger 7, the evaporimeter 4 of absorption type heat pump assembly, evaporimeter 4 sum of electric heating pump of absorption type heat pump assembly, and primary side hot water resistance of the present invention reduces greatly.
Intermediate water inlet pipe road 9 comprises the first branch road 91 and the second branch road 92 be connected in parallel, direction is entered along intermediate water, after first branch road 91 is sequentially connected in series absorber 3 in absorption type heat pump assembly and condenser 2, be connected to intermediate water and go out pipeline, second branch road 92 is connected to intermediate water and goes out pipeline after being sequentially connected in series evaporimeter 4 in absorption type heat pump assembly and water-water heat exchanger 7.Secondary side hot water is heated by the absorber 3 of absorption type heat pump assembly, condenser 2, water-water heat exchanger 7.And after secondary side hot water lowered the temperature by the evaporimeter 4 of absorption type heat pump assembly, then be that primary side hot water is lowered the temperature while being heated by water-water heat exchanger 7, make primary side hot water go out the temperature of heat-exchange unit further lower than the inflow temperature of secondary side.
In the illustrative examples of heating system provided by the invention, heating system can comprise the absorption type heat pump assembly in above-mentioned any embodiment or the heat-exchange unit in above-mentioned any embodiment.
Enumerate two specific embodiments of heat-exchange unit provided by the invention below.
First specific embodiment, the heat-exchange unit of generation-condensation process band water vapour compressor:
As shown in Figure 2, comprise generator 1, condenser 2, first absorber 31, second absorber 32, first evaporimeter 41, second evaporimeter 42, steam compressor 5, solution heat exchanger 6, water-water heat exchanger 7, solution circulation pump 12, water as refrigerant circulating pump 13, solution is every pressure device 10, and water as refrigerant is every pressure device 11 etc.
Circulation for outside water a: first water in a water inlet pipe road 8 enter generator 1 there is solution; After flowing out from generator 1, enter the high temperature side of water-water heat exchanger 7 with heating part intermediate water; After flowing out from water-water heat exchanger 7, get back to thermal source as a water outlet.Secondary inlet pipeline 9 is divided into two branch roads in parallel, and wherein, the intermediate water in the first branch road 91 successively flows through the second absorber 32, first absorber 31, condenser 2 being heated in the mode of series connection; Intermediate water in second branch road 92 enters the second evaporimeter 42, first evaporimeter 41 successively and is lowered the temperature, and after flowing out, enters the low temperature side of water-water heat exchanger 7 and is heated from the first evaporimeter 41; Two intermediate water branch roads finally mix, and as secondary water outlet to building heat supplying.
Circulation for internal solution and water as refrigerant:
Internal solution circulates: the second absorber 32 exports weak solution through solution circulation pump 12, generator 1 is entered after solution heat exchanger 6, in generator 1, produced steam after a water heating become concentrated solution, the first absorber 31 is entered through solution heat exchanger 6 and solution every pressure device 10 after generator 1 flows out, absorb the steam produced by the first evaporimeter 41, absorption process produces heat heating intermediate water, flow out from the first absorber 31 after absorption completes, and enter the second absorber 32, absorb the steam produced by the second evaporimeter 42, absorption process produces heat heating intermediate water, flow out from the second absorber 32 after absorption completes, complete solution circulation process.
Inner water as refrigerant circulation: the steam that generator 1 occurs, after steam compressor 5 compresses, enters condenser 2 condensation heat release, release heat heating intermediate water, condensed water enters the first evaporimeter 41 through water as refrigerant every pressure device 11; The water as refrigerant flowed out from the second evaporimeter 42 enters the first evaporimeter 41 after water as refrigerant circulating pump 13, and in the first evaporimeter 41, absorb the heat of primary water, a part of water as refrigerant becomes steam; Residue water as refrigerant enters the second evaporimeter 42, and absorb the heat of primary water, a part of water as refrigerant becomes steam; Residue water as refrigerant flows out from the second evaporimeter 42, completes water as refrigerant circulation.
Second specific embodiment, the heat-exchange unit of generation-condensation process dry-steam compressor:
As shown in Figure 3, comprise generator 1, condenser 2, the first absorber 31, second absorber 32, first evaporimeter 41, second evaporimeter 42, solution heat exchanger 6, water-water heat exchanger 7, solution circulation pump 12, water as refrigerant circulating pump 13, solution is every pressure device 10, and water as refrigerant is every pressure device 11 etc.
For external water circulation: first a water in a water inlet pipe road 8 enter generator 1 there is solution; After flowing out from generator 1, enter the high temperature side of water-water heat exchanger 7 with heating part intermediate water; After flowing out from water-water heat exchanger 7, get back to thermal source as a water outlet; Secondary inlet pipeline 9 is divided into two branch roads in parallel, and wherein, the intermediate water in the first branch road 91 successively flows through the second absorber 32, first absorber 31, condenser 2 being heated in the mode of series connection; Intermediate water in second branch road 92 enters the second evaporimeter 42, first evaporimeter 41 successively and is lowered the temperature, and after flowing out, enters the low temperature side of water-water heat exchanger 7 and is heated from the first evaporimeter 41; Two intermediate water branch roads finally mix and as secondary water outlet to building heat supplying.
For internal solution and water as refrigerant circulation:
Internal solution circulates: the second absorber 32 exports weak solution through solution circulation pump 12, generator 1 is entered after solution heat exchanger 6, the rear steam that produces of heating of once being intake in generator 1 becomes concentrated solution, the first absorber 31 is entered through solution heat exchanger 6 and solution every pressure device 10 after generator 1 flows out, absorb the steam produced by the first evaporimeter 41, absorption process produces heat heating intermediate water, flow out from the first absorber 31 after absorption completes, and enter the second absorber 32, absorb the steam produced by the second evaporimeter 42, absorption process produces heat heating intermediate water, flow out from the second absorber 32 after absorption completes, complete solution circulation process.
Inner water as refrigerant circulation: the steam that generator 1 occurs enters condenser 2 condensation heat release, release heat heating intermediate water, condensed water enters the first evaporimeter 41 through water as refrigerant throttling arrangement 11; The water as refrigerant flowed out from the second evaporimeter 42 enters the first evaporimeter 41 after water as refrigerant circulating pump 13, and in the first evaporimeter 41, absorb the heat of primary water, a part of water as refrigerant becomes steam; Residue water as refrigerant enters the second evaporimeter 42, and absorb the heat of primary water, a part of water as refrigerant becomes steam; Residue water as refrigerant flows out from the second evaporimeter 42, completes water as refrigerant circulation.
By the description of each embodiment above-mentioned, and prove through experiment, the present invention at least also has the following advantages:
1) a secondary net return water temperature is reduced; One secondary net supply water temperature is lower, during as 100 DEG C ~ 110 DEG C, a secondary net return water temperature can be down to less than 15 DEG C, greatly increases thermal source place and reclaims condenser heat, significantly improve the efficiency of thermal power cogeneration central heating system.
2) adopt absorption-compression combined cycle, structure is simple, and volume is little, reduces 30% compared with the system bulk of an absorption heat pump and a compression type heat series connection of pumps.
3) primary side hot water resistance reduces greatly: primary side pipeline of the present invention adopts the mode of sequential concatenation step by step, successively through the evaporimeter of water-water heat exchanger, absorption heat pump, the resistance that primary side hot water need overcome is the evaporimeter sum of water-water heat exchanger, absorption heat pump, relative in prior art, the secondary net resistance overcome needed is generator, water-water heat exchanger, the evaporimeter of absorption heat pump, the evaporimeter sum of electric heating pump of absorption heat pump, and primary side hot water resistance of the present invention can decline more than 50%.
In describing the invention; it will be appreciated that; the word such as " first ", " second " is used to limit parts; be only used to be convenient to distinguish above-mentioned parts; as there is no Stated otherwise; above-mentioned word does not have particular meaning, therefore can not be interpreted as limiting the scope of the invention.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (11)
1. an absorption type heat pump assembly, comprises generator (1), condenser (2), absorber (3), evaporimeter (4) and solution heat exchanger (6); It is characterized in that: described absorber (3) at least comprises the first absorber (31) and the second absorber (32), described evaporimeter (4) at least comprises the first evaporimeter (41) and the second evaporimeter (42), the taphole of described first absorber (31) is communicated with the solution inlet port of described second absorber (32), the water as refrigerant outlet of described first evaporimeter (41) and the water as refrigerant inlet communication of described second evaporimeter (42).
2. absorption type heat pump assembly as claimed in claim 1, it is characterized in that: the steam outlet of described generator (1) is connected to the steam import of described condenser (2) by the 5th pipeline, described 5th pipeline is provided with steam compressor (5).
3. absorption type heat pump assembly as claimed in claim 1 or 2, it is characterized in that: along solution circulation flowing direction, the taphole of described generator (1) is sequentially connected in series the solution inlet port of described solution heat exchanger (6) and described first absorber (31) by the first pipeline, the taphole of described second absorber (3) is sequentially connected in series the solution inlet port of described solution heat exchanger (6) and described generator (1) by the second pipeline.
4. absorption type heat pump assembly as claimed in claim 3, it is characterized in that: circulate direction along water as refrigerant, the water as refrigerant outlet of described condenser (2) is connected to the water as refrigerant import of described first evaporimeter (41) by the 3rd pipeline, the water as refrigerant outlet of described second evaporimeter (4) is connected to the water as refrigerant import of described first evaporimeter (41) by the 4th pipeline.
5. absorption type heat pump assembly as claimed in claim 4, it is characterized in that: the steam import of described first absorber (3) is communicated with the steam outlet of described first evaporimeter (4), the steam import of described second absorber (3) is communicated with the steam outlet of described second evaporimeter (4).
6. absorption type heat pump assembly as claimed in claim 3, is characterized in that: described first pipeline is also provided with solution every pressure device (10).
7. absorption type heat pump assembly as claimed in claim 4, is characterized in that: described 3rd pipeline is also provided with water as refrigerant every pressure device (11).
8. absorption type heat pump assembly as claimed in claim 1, is characterized in that: the solution in described absorption type heat pump assembly is lithium-bromide solution.
9. a heat-exchange unit, is characterized in that: comprise the absorption type heat pump assembly as described in any one of claim 1-8.
10. heat-exchange unit as claimed in claim 9, it is characterized in that: also comprise water inlet pipe road (8), intermediate water inlet pipe road (9) and a water-water heat exchanger (7), direction is entered along a water, a described water inlet pipe road (8) is connected to a water and goes out pipeline after being sequentially connected in series generator (1) in described absorption type heat pump assembly and described water-water heat exchanger (7); Described intermediate water inlet pipe road (9) comprises the first branch road (91) and the second branch road (92) that are connected in parallel, direction is entered along intermediate water, after described first branch road (91) is sequentially connected in series absorber (3) in described absorption type heat pump assembly and condenser (2), be connected to intermediate water and go out pipeline, described second branch road (92) is connected to described intermediate water and goes out pipeline after being sequentially connected in series evaporimeter (4) in described absorption type heat pump assembly and described water-water heat exchanger (7).
11. 1 kinds of heating systems, is characterized in that: comprise the absorption type heat pump assembly as described in any one of claim 1-8 or the heat-exchange unit as described in claim 9 or 10.
Priority Applications (1)
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| CN201510202583.0A CN104764244A (en) | 2015-04-24 | 2015-04-24 | Absorption heat pump unit, heat exchanger unit and heating system |
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| CN201510202583.0A CN104764244A (en) | 2015-04-24 | 2015-04-24 | Absorption heat pump unit, heat exchanger unit and heating system |
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| CN104764244A true CN104764244A (en) | 2015-07-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871480A (en) * | 2017-02-17 | 2017-06-20 | 松下制冷（大连）有限公司 | A kind of direct-connected lithium bromide absorption type heat pump unit in height area |
| CN107062680A (en) * | 2017-03-17 | 2017-08-18 | 赤峰和然节能设备有限责任公司 | A kind of absorption heat exchange device |
| CN109028269A (en) * | 2018-07-02 | 2018-12-18 | 北京华源泰盟节能设备有限公司 | A kind of absorption type heat pump assembly and the heating system for recycling low-temperature water source waste heat |
| CN110030758A (en) * | 2019-04-30 | 2019-07-19 | 清华大学 | A kind of big temperature difference absorption heat pump of multi-stage, efficient and absorption heat exchange device |
| CN110030759A (en) * | 2019-04-30 | 2019-07-19 | 清华大学 | It is a kind of prevent that steam from penetrating every pressure device |
| CN111238080A (en) * | 2020-01-09 | 2020-06-05 | 上海交通大学 | Ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources |
| CN111780201A (en) * | 2020-07-01 | 2020-10-16 | 双良节能系统股份有限公司 | Lithium bromide absorption type heat exchange system with three paths of water supplying heat simultaneously |
| EP4261478A1 (en) * | 2022-04-12 | 2023-10-18 | AGO GmbH Energie + Anlagen | Sorption heat pump and sorption circuit process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871480A (en) * | 2017-02-17 | 2017-06-20 | 松下制冷（大连）有限公司 | A kind of direct-connected lithium bromide absorption type heat pump unit in height area |
| CN106871480B (en) * | 2017-02-17 | 2019-03-26 | 松下制冷（大连）有限公司 | A kind of lithium bromide absorption type heat pump unit that height area is direct-connected |
| CN107062680A (en) * | 2017-03-17 | 2017-08-18 | 赤峰和然节能设备有限责任公司 | A kind of absorption heat exchange device |
| CN109028269A (en) * | 2018-07-02 | 2018-12-18 | 北京华源泰盟节能设备有限公司 | A kind of absorption type heat pump assembly and the heating system for recycling low-temperature water source waste heat |
| CN109028269B (en) * | 2018-07-02 | 2021-04-23 | 北京华源泰盟节能设备有限公司 | Absorption heat pump unit and heat supply system for recycling low-temperature water source waste heat |
| CN110030758A (en) * | 2019-04-30 | 2019-07-19 | 清华大学 | A kind of big temperature difference absorption heat pump of multi-stage, efficient and absorption heat exchange device |
| CN110030759A (en) * | 2019-04-30 | 2019-07-19 | 清华大学 | It is a kind of prevent that steam from penetrating every pressure device |
| CN111238080A (en) * | 2020-01-09 | 2020-06-05 | 上海交通大学 | Ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources |
| CN111780201A (en) * | 2020-07-01 | 2020-10-16 | 双良节能系统股份有限公司 | Lithium bromide absorption type heat exchange system with three paths of water supplying heat simultaneously |
| EP4261478A1 (en) * | 2022-04-12 | 2023-10-18 | AGO GmbH Energie + Anlagen | Sorption heat pump and sorption circuit process |
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Application publication date: 20150708 |