CN108534570A - A kind of absorption big temperature difference heat-exchange unit - Google Patents
A kind of absorption big temperature difference heat-exchange unit Download PDFInfo
- Publication number
- CN108534570A CN108534570A CN201810520491.0A CN201810520491A CN108534570A CN 108534570 A CN108534570 A CN 108534570A CN 201810520491 A CN201810520491 A CN 201810520491A CN 108534570 A CN108534570 A CN 108534570A
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- cylinders
- circuit
- water
- way
- generator
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Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims abstract description 16
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 31
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 239000008400 supply water Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
A kind of absorption big temperature difference heat-exchange unit, is related to energy technology field.The external circuit of unit of the present invention is divided into primary net circuit and secondary network circuit, home loop are divided into solution loop and refrigerant circuit.First-stage generator, generator, second-stage generator, water water plate heat exchanger and evaporator are passed through in the primary net circuit of the unit successively.Secondary network circuit parallel connection two-way, passes through first absorber, secondary absorber and condenser successively all the way, and another way passes through water water plate heat exchanger, flows out unit after two-way mixing.Evaporating pressure one is constituted in the AE cylinders, and evaporating pressure two is constituted in AG cylinders, condensing pressure is constituted in GC cylinders.Compared with the existing technology, the present invention can increase the supply backwater temperature difference of central heating system primary side hot water, reduce heat supply network return water temperature, increase heat supply network conveying capacity, be particularly suitable for the lower area of primary side supply water temperature and occasion.
Description
Technical field
The present invention relates to energy technology field, the absorption heat exchange unit for heating is particularly belonged to, can be applied to
The lower occasions of hot water quality such as secondary station, solar water utilization, the steam condensation water deep exploitation of central heating.
Background technology
With being continuously increased for concentrated supply of heating in the city scale, in the case of identical heating demand, the confession for increasing hot water is returned
Water temperature difference can reduce the hot water flow of conveying, to reduce the initial cost of transmission and distribution pipeline, and reduce water in system operation
The power consumption of pump.
In the prior art, it is proposed in Chinese patent " a kind of heat pump type heat exchanging unit ", the confession of the primary net hot water of central heating,
Return water temperature is generally 130-60 DEG C or so, and primary net supply and return water temperature is 130-25 DEG C in embodiment, and supply backwater temperature difference reaches
To 105 DEG C.But the overwhelming majority area of city central heating at present, primary net supply water temperature are simultaneously not achieved 130 DEG C, especially exist
At the beginning of heating when latter stage, primary net supply water temperature is substantially only at 70-80 DEG C.At this point, the work due to absorption heat exchange unit is special
Property, the temperature of driving heat source reduces, and leads to primary net return water temperature also and can be higher than 25 DEG C or even unit can not to run.Therefore, real
When once net supply water temperature is relatively low in the application of border, it is not particularly suited for the absorption heat exchange unit of this type.
Invention content
In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of absorption big temperature difference heat exchangers
Group.It can increase the supply backwater temperature difference of central heating system primary side hot water, reduce heat supply network return water temperature, increase heat supply network and convey energy
Power is particularly suitable for the lower area of primary side supply water temperature and occasion.
In order to reach foregoing invention purpose, technical scheme of the present invention is realized as follows：
A kind of absorption big temperature difference heat-exchange unit, the unit includes external circuit and home loop.External circuit is divided into once
Net circuit and secondary network circuit, home loop are divided into solution loop and refrigerant circuit.It is structurally characterized in that, the unit include by
The AE cylinders of first absorber and evaporator composition, the AG cylinders of generator and secondary absorber composition, first-stage generator, condensation
The GC cylinders and water water plate heat exchanger of device and second-stage generator composition.Level-one is passed through in the primary net circuit successively
Device, generator, second-stage generator, water water plate heat exchanger and evaporator.Parallel connection two-way in secondary network circuit passes through one successively all the way
Grade absorber, secondary absorber and condenser, another way pass through water water plate heat exchanger, flow out unit after two-way mixing.It is described
Evaporating pressure one is constituted in AE cylinders, and evaporating pressure two is constituted in AG cylinders, condensing pressure is constituted in GC cylinders.
Three cylinders constitute three different pressure to the present invention due to the above structure, and three pressure are brought
Segmented cooling/heating can significantly increase the supply backwater temperature difference of primary side hot water in central heating system, reduce heat supply network return water temperature
Degree increases heat supply network conveying capacity.Present invention is particularly suitable for the lower area of primary side supply water temperature and occasions, even if heating
First latter stage, equipment can also be efficiently used.The present invention compares Conventional plate-type heat-exchange unit, and primary side return water temperature is lower,
And it is less than secondary side return water temperature, condition is created to recycle low grade heat energy for heating plant, improves system synthesis energy
Source utilization ratio.
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
Referring to Fig. 1, the absorption big temperature difference heat-exchange unit of the present invention, it includes external circuit and home loop.External circuit
It is divided into primary net circuit and secondary network circuit, home loop is divided into solution loop and refrigerant circuit.Unit includes by first order absorption
The AE cylinders of device A1 and evaporator E compositions, the AG cylinders of generator G and secondary absorber A2 compositions, first-stage generator G1, condensation
The GC cylinders and water water plate heat exchanger W of device C and second-stage generator G2 compositions.Level-one is passed through in primary net circuit successively
Device G1, generator G, second-stage generator G2, water water plate heat exchanger W and evaporator E.Secondary network circuit parallel connection two-way, all the way according to
Secondary to pass through first absorber A1, secondary absorber A2 and condenser C, another way passes through water water plate heat exchanger W, after two-way mixing
Flow out unit.Evaporating pressure one is constituted in AE cylinders, and evaporating pressure two is constituted in AG cylinders, condensing pressure is constituted in GC cylinders.
Solution loop in home loop of the present invention is divided into independent two-way, and solution passes through first absorber successively all the way
After A1, first-stage generator G1, generator G, first absorber A1 is returned to, is moved in circles；Another way solution passes through two level and inhales successively
After receiving device A2, second-stage generator G2, secondary absorber A2 is returned to, is moved in circles.Refrigerant circuit in home loop of the present invention, from
Condenser C to evaporator E.When internal solution recycles in the present invention, cycle flow direction, quantity, the control mode of pump of pump etc. are unlimited
System.
The present invention provides the cascade utilization solutions of the middle cryogenic energy of central heating hot water, and are capable of providing heating
Or domestic hot-water.When work, central heating hot water passes through first-stage generator G1, generator G, second-stage generator G2, water successively
The Pyatyi of water plate heat exchanger W and evaporator E cool down, to make central heating hot water backwater's temperature be greatly reduced.Due to this hair
In bright, the special construction of AG cylinders and GC cylinders so that drive the usable temp of hot water between 65-100 DEG C.When in the present invention
First-stage generator G1 when not working, tube side is only as the circulation passage of hot water, at this point, the usable temp of driving hot water exists
Between 65-80 DEG C.
Since heat supply return water temperature of the present invention reduces, water return pipeline can reduce back without heat preservation and thermal stress compensation problem
The investment of grid and entire pipe network.In addition, for certain areas, central heating hot water temperature's condition is low, it is also contemplated that adopting
Improved with absorption heat exchange unit of the present invention, and also there is good adaptability for latter stage at the beginning of heat supply.
Claims (1)
1. a kind of absorption big temperature difference heat-exchange unit, the unit includes external circuit and home loop, and external circuit is divided into one
Secondary net circuit and secondary network circuit, home loop are divided into solution loop and refrigerant circuit；It is characterized in that, the unit include by
First absorber（A1）And evaporator（E）The AE cylinders of composition, generator（G）And secondary absorber（A2）The AG cylinders of composition,
First-stage generator（G1）, condenser（C）And second-stage generator（G2）The GC cylinders and water water plate heat exchanger of composition（W）, institute
It states primary net circuit and passes through first-stage generator successively（G1）, generator（G）, second-stage generator（G2）, water water plate heat exchanger（W）
And evaporator（E）, secondary network circuit parallel connection two-way, all the way successively by first absorber（A1）, secondary absorber（A2）With it is cold
Condenser（C）, another way is by water water plate heat exchanger（W）, flow out unit after two-way mixing；Vapor pres- sure is constituted in the AE cylinders
Power one, AG cylinders are interior to constitute evaporating pressure two, and condensing pressure is constituted in GC cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810520491.0A CN108534570B (en) | 2018-05-28 | 2018-05-28 | Absorption type large-temperature-difference heat exchanger unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810520491.0A CN108534570B (en) | 2018-05-28 | 2018-05-28 | Absorption type large-temperature-difference heat exchanger unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108534570A true CN108534570A (en) | 2018-09-14 |
| CN108534570B CN108534570B (en) | 2024-04-09 |
Family
ID=63472854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810520491.0A Active CN108534570B (en) | 2018-05-28 | 2018-05-28 | Absorption type large-temperature-difference heat exchanger unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108534570B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336572A (en) * | 2019-08-30 | 2020-06-26 | 同方节能工程技术有限公司 | Low-temperature hot water driven absorption type large-temperature-difference heat exchange unit |
| CN111336573A (en) * | 2019-08-30 | 2020-06-26 | 同方节能工程技术有限公司 | Novel absorption type large-temperature-difference heat exchange unit |
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2018
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| CN101261054A (en) * | 2007-12-29 | 2008-09-10 | 清华大学 | Great temperature rising absorption type heat pump units |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Publication date |
|---|---|
| CN108534570B (en) | 2024-04-09 |
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