CN111336573B - Novel absorption type large-temperature-difference heat exchanger unit - Google Patents
Novel absorption type large-temperature-difference heat exchanger unit Download PDFInfo
- Publication number
- CN111336573B CN111336573B CN201910810937.8A CN201910810937A CN111336573B CN 111336573 B CN111336573 B CN 111336573B CN 201910810937 A CN201910810937 A CN 201910810937A CN 111336573 B CN111336573 B CN 111336573B
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- China
- Prior art keywords
- heat exchanger
- unit
- plate heat
- water
- temperature
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Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000006096 absorbing agent Substances 0.000 claims abstract description 17
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003507 refrigerant Substances 0.000 claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 6
- 230000008020 evaporation Effects 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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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
-
- 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
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- 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
- F25B37/00—Absorbers; Adsorbers
-
- 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
- F25B39/00—Evaporators; Condensers
-
- 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
-
- 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
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
A novel absorption type large-temperature-difference heat exchanger unit relates to the technical field of energy. The invention comprises a water-water plate heat exchanger and a unit body. The heat exchanger unit is structurally characterized in that the unit body comprises an absorber, an evaporator, a condenser, a high-temperature plate heat exchanger and a low-temperature plate heat exchanger. The primary side hot water of the heat exchanger unit sequentially passes through the high-temperature plate heat exchanger, the water-water plate heat exchanger and the evaporator. The heat exchanger unit consists of a solution circulation loop and a refrigerant circulation loop, wherein the solution circulation loop consists of a high-temperature plate heat exchanger, a flash evaporation cavity of a condenser, a low-temperature plate heat exchanger and an absorber which are connected; the refrigerant circulation loop is formed by connecting a condenser and an evaporator. Compared with the prior art, the invention can further increase the temperature difference of the water supply and return of the primary side hot water of the central heating system, reduce the temperature of the water return of the heat supply network, increase the conveying capacity of the heat supply network, is suitable for areas and occasions where the primary side is steam, greatly widens the application range of the heat exchange unit, and realizes one machine for two purposes.
Description
Technical Field
The invention relates to the technical field of energy, in particular to a novel absorption heat exchanger unit which can be applied to occasions such as a secondary station for central heating, solar hot water utilization, steam and deep utilization of the steam.
Background
With the continuous increase of the central heating scale of cities, under the condition of the same heating load, the increase of the temperature difference of the water supply and return water of hot water can reduce the flow of the delivered hot water, thereby reducing the initial investment of the delivery pipeline and the power consumption of the water pump in the running process of the system. In the prior art, the traditional large-temperature-difference heat exchanger unit formed by plate exchange and shell-and-tube absorption heat pump also has the defects of insufficient temperature difference of primary side water supply and return, insufficient temperature of primary side water return and limited application range.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a novel absorption type large-temperature-difference heat exchanger unit. The heat exchange unit can further increase the temperature difference of the hot water supply and return water at the primary side of the central heating system, reduce the temperature of the return water of the heat supply network, increase the conveying capacity of the heat supply network, and is suitable for areas and occasions where the primary side is steam, so that the application range of the heat exchange unit is greatly widened, and one machine is realized.
In order to achieve the above object, the technical solution of the present invention is implemented as follows:
a novel absorption type large-temperature-difference heat exchanger unit comprises a water-water plate type heat exchanger and a unit body. The heat exchanger unit is structurally characterized in that the unit body comprises an absorber, an evaporator, a condenser, a high-temperature plate heat exchanger and a low-temperature plate heat exchanger. The primary side hot water of the heat exchanger unit sequentially passes through the high-temperature plate heat exchanger, the water-water plate heat exchanger and the evaporator. The heat exchanger unit consists of a solution circulation loop and a refrigerant circulation loop, wherein the solution circulation loop consists of a high-temperature plate heat exchanger, a flash evaporation cavity of a condenser, a low-temperature plate heat exchanger and an absorber which are connected; the refrigerant circulation loop is formed by connecting a condenser and an evaporator.
By adopting the structure, the invention provides a solution for cascade utilization of primary side hot water or steam energy in the central heating system and can provide heating or domestic hot water. In the invention, the primary side hot water or steam and the condensate thereof are sequentially subjected to multistage cooling, so that the primary side backwater temperature is greatly reduced. The structure of the invention adopts the special refrigerant steam generation mode of the plate heat exchanger and the flash evaporation cavity, thereby greatly improving the heat exchange efficiency between the fluids at two sides and releasing the heat at the driving side to the maximum extent.
The invention is further described below with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Detailed Description
Example 1
Referring to fig. 1, the absorption type large-temperature-difference heat exchanger unit comprises a water-water plate heat exchanger W-HEX, an absorber A, an evaporator E, a condenser C, a high-temperature plate heat exchanger HEX-H and a low-temperature plate heat exchanger HEX-L. The external loop of the unit is divided into a primary network loop and a secondary network loop, and the internal loop is divided into a solution circulation loop, a refrigerant circulation loop, an accessory pump, a solution heat exchanger, a valve and the like. The primary network loop of the external loop respectively passes through the high-temperature plate heat exchanger HEX-H, the water-water plate heat exchanger W-HEX and the evaporator E. The secondary network loop is connected in parallel with three paths, and one path sequentially passes through the absorber A and the condenser C; one path passes through the low-temperature plate heat exchanger HEX-L, and the other path passes through the water-water plate heat exchanger W-HEX, and finally the mixture is discharged out of the unit. The solution circulation loop of the inner loop sequentially passes through the absorber A, the high-temperature plate heat exchanger HEX-H, the flash evaporation cavity of the condenser C barrel, the low-temperature plate heat exchanger HEX-L and the absorber A in a circulating way. The refrigerant circulation loop goes from the condenser C to the evaporator E.
Example two
Referring to fig. 2, the absorption type large-temperature-difference heat exchanger unit comprises a water-water plate heat exchanger W-HEX, an absorber A, an evaporator E, a condenser C, a high-temperature plate heat exchanger HEX-H and a low-temperature plate heat exchanger HEX-L. The external loop is divided into a primary network loop and a secondary network loop, and the internal loop is divided into a solution circulation loop, a refrigerant circulation loop, an accessory pump, a solution heat exchanger, a valve and the like. The primary network loop of the external loop respectively passes through the high-temperature plate heat exchanger HEX-H, the water-water plate heat exchanger W-HEX and the evaporator E. The secondary network loop is connected with two paths in parallel, one path sequentially passes through the absorber A and the condenser C, and the other path passes through the water plate type heat exchanger W-HEX, and finally is mixed and then is discharged out of the unit. The solution loop of the internal circulation loop sequentially passes through the absorber A, the low-temperature plate heat exchanger HEX-L, the high-temperature plate heat exchanger HEX-H, the flash evaporation cavity of the condenser C barrel, the low-temperature plate heat exchanger HEX-L and the absorber A to be circularly and reciprocally. The refrigerant circulation loop goes from the condenser C to the evaporator E.
Example III
Referring to fig. 3, the structure of the receiving type large-temperature-difference heat exchanger unit is that the side of the unit body is made into two sections based on the first embodiment, and the second water parallel connection and the first water reverse serial connection of n sections can be realized by analogy.
Example IV
Referring to fig. 4, the absorption type large-temperature-difference heat exchanger unit is characterized in that the side of the unit body is made into two sections on the basis of the second embodiment, and the second water parallel connection and the first water reverse series connection of n sections can be realized by analogy.
Practice proves that the heat source can be hot water or steam by adopting an absorption type large-temperature-difference heat exchanger unit, and the temperature range is 65-200 ℃.
Claims (1)
1. A novel absorption type large-temperature-difference heat exchanger unit comprises a water-water plate heat exchanger (W-HEX) and two groups of unit bodies; the unit is characterized in that each group of unit bodies comprises an absorber (A), an evaporator (E), a condenser (C), a high-temperature plate heat exchanger (HEX-H) and a low-temperature plate heat exchanger (HEX-L); the heat exchanger unit consists of a solution circulation loop and a refrigerant circulation loop, wherein the solution circulation loop consists of a high-temperature plate heat exchanger (HEX-H), a flash evaporation cavity of a condenser (C), a low-temperature plate heat exchanger (HEX-L) and an absorber (A) which are connected, and the refrigerant circulation loop consists of the condenser (C) and an evaporator (E) which are connected;
When the unit bodies are in a group, primary side hot water of the heat exchanger unit sequentially passes through the high-temperature plate heat exchanger (HEX-H), the water plate heat exchanger (W-HEX) and the evaporator (E);
The hot water at the second side of the heat exchanger unit is connected in parallel with three paths, and one path sequentially passes through the absorber (A) and the condenser (C); one path passes through a low-temperature plate heat exchanger (HEX-L), the other path passes through a water-water plate heat exchanger (W-HEX), and finally the mixture is discharged out of the unit;
when the two sets of unit bodies are arranged, the two sets of unit bodies are arranged side by side;
The primary side hot water of the heat exchanger unit sequentially passes through a high-temperature plate heat exchanger (HEX-H) of the first unit body, a high-temperature plate heat exchanger (HEX-H) of the second unit body, a water-water plate heat exchanger (W-HEX), an evaporator (E) of the second unit body and an evaporator (E) of the first unit body;
the hot water at the second side of the heat exchanger unit is connected in parallel with five paths, and one path sequentially passes through the absorber (A) of the first unit body and the condenser (C) of the first unit body; the two paths sequentially pass through an absorber (A) of the second group of unit bodies and a condenser (C) of the second group of unit bodies; three paths pass through the low-temperature plate heat exchanger (HEX-L) of the first group of unit bodies, and four paths pass through the low-temperature plate heat exchanger (HEX-L) of the second group of unit bodies; five paths of the water pass through a water-plate heat exchanger (W-HEX) and finally are mixed and discharged out of the unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810937.8A CN111336573B (en) | 2019-08-30 | 2019-08-30 | Novel absorption type large-temperature-difference heat exchanger unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810937.8A CN111336573B (en) | 2019-08-30 | 2019-08-30 | Novel absorption type large-temperature-difference heat exchanger unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111336573A CN111336573A (en) | 2020-06-26 |
| CN111336573B true CN111336573B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910810937.8A Active CN111336573B (en) | 2019-08-30 | 2019-08-30 | Novel absorption type large-temperature-difference heat exchanger unit |
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| Country | Link |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006162113A (en) * | 2004-12-03 | 2006-06-22 | Ebara Corp | Absorption heat pump |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| CN101629733A (en) * | 2009-08-18 | 2010-01-20 | 清华大学 | Method for reducing return water temperature of heat supply pipeline |
| KR20130036816A (en) * | 2011-10-05 | 2013-04-15 | 지에스파워주식회사 | Providing system for district heating using big temperature difference |
| CN103512075A (en) * | 2013-09-25 | 2014-01-15 | 清华大学 | Absorption heat exchanger unit combined with boiler |
| CN203549973U (en) * | 2013-09-24 | 2014-04-16 | 四平市巨元瀚洋板式换热器有限公司 | Heat-source-reusing integrated heat exchange unit |
| CN104848325A (en) * | 2015-04-24 | 2015-08-19 | 珠海格力电器股份有限公司 | Absorption heat pump type heat exchanger unit |
| CN104848330A (en) * | 2015-04-24 | 2015-08-19 | 珠海格力电器股份有限公司 | heating system |
| CN105953426A (en) * | 2016-05-13 | 2016-09-21 | 湖南同为节能科技有限公司 | Heat pump type large-temperature-difference heat supply method |
| CN108534570A (en) * | 2018-05-28 | 2018-09-14 | 同方节能工程技术有限公司 | A kind of absorption big temperature difference heat-exchange unit |
| CN210717773U (en) * | 2019-08-30 | 2020-06-09 | 同方节能工程技术有限公司 | Novel absorption type large-temperature-difference heat exchange unit |
-
2019
- 2019-08-30 CN CN201910810937.8A patent/CN111336573B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006162113A (en) * | 2004-12-03 | 2006-06-22 | Ebara Corp | Absorption heat pump |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| CN101629733A (en) * | 2009-08-18 | 2010-01-20 | 清华大学 | Method for reducing return water temperature of heat supply pipeline |
| KR20130036816A (en) * | 2011-10-05 | 2013-04-15 | 지에스파워주식회사 | Providing system for district heating using big temperature difference |
| CN203549973U (en) * | 2013-09-24 | 2014-04-16 | 四平市巨元瀚洋板式换热器有限公司 | Heat-source-reusing integrated heat exchange unit |
| CN103512075A (en) * | 2013-09-25 | 2014-01-15 | 清华大学 | Absorption heat exchanger unit combined with boiler |
| CN104848325A (en) * | 2015-04-24 | 2015-08-19 | 珠海格力电器股份有限公司 | Absorption heat pump type heat exchanger unit |
| CN104848330A (en) * | 2015-04-24 | 2015-08-19 | 珠海格力电器股份有限公司 | heating system |
| CN105953426A (en) * | 2016-05-13 | 2016-09-21 | 湖南同为节能科技有限公司 | Heat pump type large-temperature-difference heat supply method |
| CN108534570A (en) * | 2018-05-28 | 2018-09-14 | 同方节能工程技术有限公司 | A kind of absorption big temperature difference heat-exchange unit |
| CN210717773U (en) * | 2019-08-30 | 2020-06-09 | 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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| Publication number | Publication date |
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| CN111336573A (en) | 2020-06-26 |
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