CN108444144B - Hot water reverse series steam double-effect lithium bromide absorption heat pump unit - Google Patents
Hot water reverse series steam double-effect lithium bromide absorption heat pump unit Download PDFInfo
- Publication number
- CN108444144B CN108444144B CN201810377756.6A CN201810377756A CN108444144B CN 108444144 B CN108444144 B CN 108444144B CN 201810377756 A CN201810377756 A CN 201810377756A CN 108444144 B CN108444144 B CN 108444144B
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- CN
- China
- Prior art keywords
- hot water
- temperature
- absorber
- condenser
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 3
- 239000002918 waste heat Substances 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000006467 substitution reaction 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- 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
Abstract
The invention relates to a hot water reverse series connection steam double-effect lithium bromide absorption heat pump unit, which comprises an evaporator (1), an absorber (2), a steam type high-pressure generator (7), a low-pressure generator (10), a condenser (12), a high-temperature heat exchanger (6), a low-temperature heat exchanger (3), a condensate heat exchanger (4), a solution pump (17) and a refrigerant pump (18), wherein a hot water communicating pipe (14) is arranged between the condenser (12) and the absorber (2); the method is characterized in that: the hot water inlet pipe (19) is connected to the condenser (12), hot water exiting the condenser (12) enters the absorber (2) through the hot water communication pipe (14), the hot water outlet pipe (13) is connected to the absorber (2), and the hot water flow is an inverse series flow. The temperature of the hot water outlet is increased to be more than or equal to 60 ℃, and the heat supply requirement with higher requirement on the temperature of the hot water for heat supply can be met.
Description
Technical Field
The invention relates to a lithium bromide absorption heat supply unit, in particular to a hot water reverse series steam double-effect lithium bromide absorption heat pump unit. Belongs to the technical field of air conditioning equipment.
Background
As shown in fig. 1, a conventional double-effect type steam lithium bromide absorption heat pump unit is composed of an evaporator 1, an absorber 2, a steam high-pressure generator 7, a low-pressure generator 10, a condenser 12, a high-temperature heat exchanger 6, a low-temperature heat exchanger 3, a condensate heat exchanger 4, a solution pump 17, a refrigerant pump 18, a control system (not shown), and pipes and valves for connecting the respective components. When the unit is operated, working steam entering the steam type high-pressure generator 7 from the steam inlet pipe 8 is used as compensation heat energy, waste heat source hot water heat entering and exiting the evaporator 1 is recovered, process or heat supply hot water with the temperature higher than the temperature of the waste heat source hot water is externally provided, and the unit is mainly applied to places with low-temperature heat sources and medium-temperature heat supply requirements. The hot water flow of the unit adopts a positive series structure, namely hot water firstly enters an absorber to absorb heat and raise temperature, then enters a condenser, and finally exits the unit from the condenser. Because the working pressure and the working temperature of the condenser are limited by the operation requirement of the steam type high-pressure generator and cannot be too high, the hot water supply temperature of the unit is lower (generally less than 50 ℃), the unit is only suitable for places with lower requirements on the hot water supply temperature (such as floor heating), and the heat supply requirement with higher requirements on the hot water supply temperature is difficult to meet.
Disclosure of Invention
The invention aims to overcome the defects and provide the hot water reverse series steam double-effect lithium bromide absorption heat pump unit, wherein the hot water outlet temperature is increased to be more than or equal to 60 ℃, and the heat supply requirement on high heat supply hot water temperature is met.
The purpose of the invention is realized in the following way: a hot water reverse series steam double-effect lithium bromide absorption heat pump unit comprises an evaporator, an absorber, a steam type high-pressure generator, a low-pressure generator, a condenser, a high-temperature heat exchanger, a low-temperature heat exchanger, a condensate heat exchanger, a solution pump and a refrigerant pump. The hot water inlet pipe is connected to the condenser, hot water exiting the condenser enters the absorber through the hot water communicating pipe, the hot water outlet pipe is connected to the absorber, and the hot water flow is an inverse series flow.
The beneficial effects of the invention are as follows:
the hot water flow of the unit adopts an inverse series flow, hot water with lower temperature from an external system firstly enters a condenser, and the hot water absorbs the condensation heat of the refrigerant steam in the condenser and then enters an absorber after being heated. Under the operation condition that the temperature of the waste heat water outlet is higher (generally higher than 30 ℃), the temperature rising amplitude of the hot water in the absorber is improved by improving the working pressure and the working temperature of the evaporator and the absorber, and the temperature of the hot water outlet is increased to be more than or equal to 60 ℃, so that the heat supply requirement with higher requirement on the temperature of the hot water for heat supply is met.
Drawings
Fig. 1 is a schematic structural diagram of a conventional steam double-effect lithium bromide absorption heat pump unit.
Fig. 2 is a schematic structural diagram of the hot water reverse series steam double-effect lithium bromide absorption heat pump unit of the invention.
Reference numerals in the drawings:
the evaporator 1, the absorber 2, the low-temperature heat exchanger 3, the condensate heat exchanger 4, the condensate outlet pipe 5, the high-temperature heat exchanger 6, the steam type high-pressure generator 7, the steam inlet pipe 8, the refrigerant steam pipe 9, the low-pressure generator 10, the high-temperature refrigerant water outlet pipe 11, the condenser 12, the hot water outlet pipe 13, the hot water communicating pipe 14, the waste heat water outlet pipe 15, the waste heat water inlet pipe 16, the solution pump 17, the refrigerant pump 18 and the hot water inlet pipe 19.
Detailed Description
For a better understanding of the present invention, reference is made to specific examples which are included within the scope of the invention but do not limit the scope of the invention.
Example 1:
the invention is as shown in figure 2, the unit is a hot water reverse series connection steam double-effect lithium bromide absorption heat pump unit which is composed of an evaporator 1, an absorber 2, a steam type high-pressure generator 7, a low-pressure generator 10, a condenser 12, a high-temperature heat exchanger 6, a low-temperature heat exchanger 3, a condensate heat exchanger 4, a solution pump 17, a refrigerant pump 18, a control system (not shown in the figure), pipelines and valves for connecting the components, a refrigerant steam pipe 9 is arranged between the steam type high-pressure generator 7 and the low-pressure generator 10, and a hot water communicating pipe 14 is arranged between the high-temperature refrigerant water outlet pipe 11 connected to the condenser 12, the condenser 12 and the absorber 2. A hot water outlet pipe 13 is connected to the absorber 2 and a hot water inlet pipe 19 is connected to the condenser 12.
During operation of the unit, hot water enters the condenser 12 through the hot water inlet pipe 19, is heated and warmed in the condenser 12 by the refrigerant steam from the low-pressure generator 10 and flash steam of high-temperature refrigerant water, then exits the condenser 12, and then enters the absorber 2 through the hot water communicating pipe 14. Under the application condition that the temperature of the waste heat water outlet is more than or equal to 30 ℃, the evaporation temperature of the evaporator 1 is more than 28 ℃, the temperature of the solution outside the heat exchange tube of the absorber 2 is more than 65 ℃, the temperature rising amplitude of hot water in the heat exchange tube of the absorber is improved, the temperature of hot water discharged from a unit through the hot water outlet tube 13 is improved to be more than or equal to 60 ℃, and the heat supply requirement with higher requirement on the temperature of hot water for heat supply can be met.
The above description should not be taken as limiting the practice of the invention to these descriptions, but it will be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and the invention is defined by the appended claims.
Claims (1)
1. The utility model provides a hot water is established ties steam double-effect lithium bromide absorption heat pump unit, includes evaporimeter (1), absorber (2), steam type high-pressure generator (7), low pressure generator (10), condenser (12), high temperature heat exchanger (6), low temperature heat exchanger (3), condensate heat exchanger (4), solution pump (17) and refrigerant pump (18), is provided with hot water communicating pipe (14) between condenser (12) and the absorber (2); the method is characterized in that: the hot water inlet pipe (19) is connected to the condenser (12), hot water exiting the condenser (12) enters the absorber (2) through the hot water communicating pipe (14), the hot water outlet pipe (13) is connected to the absorber (2), and the hot water flow is an inverse series flow;
when the unit operates, hot water enters the condenser (12) through the hot water inlet pipe (19), is heated and warmed by the refrigerant steam from the low-pressure generator (10) and the flash steam of high-temperature refrigerant water in the condenser (12), and then enters the absorber (2) through the hot water communicating pipe (14); under the application condition that the temperature of the waste heat water outlet is more than or equal to 30 ℃, the evaporation temperature of the evaporator (1) is more than 28 ℃, the temperature of the solution outside the heat exchange tube of the absorber (2) is more than 65 ℃, the temperature rising amplitude of hot water in the heat exchange tube of the absorber is improved, the temperature of hot water discharged from a unit through the hot water outlet tube (13) is improved to be more than or equal to 60 ℃, and the heat supply requirement with higher requirement on the temperature of hot water for heat supply can be met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810377756.6A CN108444144B (en) | 2018-04-25 | 2018-04-25 | Hot water reverse series steam double-effect lithium bromide absorption heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810377756.6A CN108444144B (en) | 2018-04-25 | 2018-04-25 | Hot water reverse series steam double-effect lithium bromide absorption heat pump unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108444144A CN108444144A (en) | 2018-08-24 |
| CN108444144B true CN108444144B (en) | 2024-02-09 |
Family
ID=63201524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810377756.6A Active CN108444144B (en) | 2018-04-25 | 2018-04-25 | Hot water reverse series steam double-effect lithium bromide absorption heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108444144B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832679A (en) * | 2010-05-10 | 2010-09-15 | 江苏双良空调设备股份有限公司 | Dual-effect type-II lithium bromide absorption heat pump unit |
| CN202119157U (en) * | 2011-06-25 | 2012-01-18 | 双良节能系统股份有限公司 | Steam type lithium bromide absorption type heat pump capable of efficiently utilizing working steam water condensation heat |
| CN102914080A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage single-effect and double-effect lithium bromide absorption refrigerating unit with smoke and hot water afterburning |
| CN105423592A (en) * | 2015-12-23 | 2016-03-23 | 双良节能系统股份有限公司 | Double-working-condition direct-fired double-effect type lithium bromide absorption type heat pump set |
| CN205279505U (en) * | 2015-12-23 | 2016-06-01 | 双良节能系统股份有限公司 | Duplex condition direct combustion economic benefits and social benefits type lithium bromide absorption heat pump unit |
| CN106482384A (en) * | 2016-11-19 | 2017-03-08 | 双良节能系统股份有限公司 | Superposition type solution serial double-effect lithium bromide absorption type refrigeration heat pump unit |
| CN107655235A (en) * | 2017-10-18 | 2018-02-02 | 双良节能系统股份有限公司 | The segment type lithium bromide adsorption water chilling unit of hot water and steam economic benefits and social benefits two |
| CN208124669U (en) * | 2018-04-25 | 2018-11-20 | 双良节能系统股份有限公司 | Hot water fall connect steam double-effect type lithium bromide absorption type heat pump unit |
-
2018
- 2018-04-25 CN CN201810377756.6A patent/CN108444144B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832679A (en) * | 2010-05-10 | 2010-09-15 | 江苏双良空调设备股份有限公司 | Dual-effect type-II lithium bromide absorption heat pump unit |
| CN202119157U (en) * | 2011-06-25 | 2012-01-18 | 双良节能系统股份有限公司 | Steam type lithium bromide absorption type heat pump capable of efficiently utilizing working steam water condensation heat |
| CN102914080A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage single-effect and double-effect lithium bromide absorption refrigerating unit with smoke and hot water afterburning |
| CN105423592A (en) * | 2015-12-23 | 2016-03-23 | 双良节能系统股份有限公司 | Double-working-condition direct-fired double-effect type lithium bromide absorption type heat pump set |
| CN205279505U (en) * | 2015-12-23 | 2016-06-01 | 双良节能系统股份有限公司 | Duplex condition direct combustion economic benefits and social benefits type lithium bromide absorption heat pump unit |
| CN106482384A (en) * | 2016-11-19 | 2017-03-08 | 双良节能系统股份有限公司 | Superposition type solution serial double-effect lithium bromide absorption type refrigeration heat pump unit |
| CN107655235A (en) * | 2017-10-18 | 2018-02-02 | 双良节能系统股份有限公司 | The segment type lithium bromide adsorption water chilling unit of hot water and steam economic benefits and social benefits two |
| CN208124669U (en) * | 2018-04-25 | 2018-11-20 | 双良节能系统股份有限公司 | Hot water fall connect steam double-effect type lithium bromide absorption type heat pump unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108444144A (en) | 2018-08-24 |
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