CN1054426C - Concentrated solution precooling process for lithium bromide absorption refrigerator - Google Patents
Concentrated solution precooling process for lithium bromide absorption refrigerator Download PDFInfo
- Publication number
- CN1054426C CN1054426C CN93115511A CN93115511A CN1054426C CN 1054426 C CN1054426 C CN 1054426C CN 93115511 A CN93115511 A CN 93115511A CN 93115511 A CN93115511 A CN 93115511A CN 1054426 C CN1054426 C CN 1054426C
- Authority
- CN
- China
- Prior art keywords
- solution
- absorber
- lithium
- pressure generator
- heat exchanger
- 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.)
- Expired - Lifetime
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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
- 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
- Sorption Type Refrigeration Machines (AREA)
Abstract
The present invention relates to a cooling method of a refrigerator, more specially to a technological method for precooling strong solutions of a lithium bromide absorption refrigerator. The present invention is characterized in that the present invention adopts a three-pump circulation mode, the strong solutions of lithium bromide with high temperature are firstly precooled in a cooling water system in an absorber (5), and then, the strong solutions are pumped into the absorber (5) for spraying by an absorber pump (10) so as to absorb water vapor. The present invention has the advantages of low temperature of the absorber pump (10), difficult generation of cavitation erosion, without being influenced by factors, such as the load variation of the refrigerator, etc., and stable operation of the entire refrigerator.
Description
The present invention relates to a kind of cooling means of refrigeration machine, specifically be meant the process that the concentrated solution of lithium-bromide absorption-type refrigerating machine is cooled off in advance.
In recent years, because international community is to environmental protection and to saving the generally attention of the energy, the lithium bromide absorbing type refrigeration technology more and more is subjected to people's welcome.At present, lithium-bromide absorption-type refrigerating machine (comprising the directly burning lithium bromide cold warm water machine) adopts two kinds of endless form, i.e. two-pump style or three pump formulas circulation.The advantage of two-pump style circulation is: the higher bromize lithium concentrated solution of temperature is without absorber, but comes spraying cooling through injector, and therefore, the absorber temperature is lower, and pump is not fragile; Shortcoming is that the spray process is to finish by injector, and the parameter of injector is subjected to the influence of factors such as refrigeration machine load variations, thereby the refrigerator operation instability, often regulate.And the advantage of three pump formulas circulation is: bromize lithium concentrated solution is to spray by absorber to finish, and is not subjected to the influence of factors such as load variations, and therefore, refrigerator operation is stable; Shortcoming is the bromize lithium concentrated solution process absorber of higher temperature, and its pump temperature is higher, easily produces cavitation erosion, and the motor of pump is immersed in the concentrated solution of higher temperature, and motor is fragile.
The objective of the invention is to make the pump temperature drop of refrigeration machine absorber low, be not subjected to the influence of factors such as refrigeration machine load variations again, guarantee that refrigerator operation is stable.
Design of the present invention is: adopt three pump endless form, the bromize lithium concentrated solution that temperature is higher is earlier pre-cooled by cooling water system in the absorber, is sprayed by absorber again, absorbs water vapour.
Below in conjunction with accompanying drawing embodiments of the invention are described in detail.
Fig. 1 adopts the pre-cooled schematic diagram of three pumps circulation for the present invention for the direct-fired lithiumbromide absorption refrigerating machine concentrated solution.
Among the figure, 1-high pressure generator, 2-condenser, the 3-low pressure generator, 4-evaporimeter, 5-absorber, the 6-high-temperature heat exchanger, 7-low temperature heat exchanger, the pre-cooled spray thrower of 8-, the 9-generator pump, 10-absorber, 11-evaporimeter pump, 12-vacuum extractor, A-cooling water heading, A '-cooling water go out to, B-chilled water heading, B '-chilled water go out to;
Embodiment 1:
The present invention is used for lithium-bromide absorption-type refrigerating machine (containing the directly burning lithium bromide absorption cooling and warming water machine), it is characterized in that adjunction a connecting pipe on the tube connector of high-temperature heat exchanger (6) and low temperature heat exchanger (7), the other end of communicating pipe is entered in the absorber (5), and be communicated with pre-cooled spray thrower (8).Its course of work is: the interior bromize lithium dilute solution of absorber (5) is by generator pump (9), send into high pressure generator (1) and low pressure generator (3) respectively through high-temperature heat exchanger (6), low temperature heat exchanger (7), bromize lithium dilute solution is heated the generation water vapour in high and low pressure generator (1.3), the lithium-bromide solution of the water vapour heating low pressure generator (3) that is produced by high pressure generator (1) forms condensed water and enters condenser (2); And the weak solution that directly enters low pressure generator (3) through low temperature heat exchanger (7), the heating lithium-bromide solution, make it to produce water vapour, shift to condenser (2), after meeting cooling water (A.A ') system cools, form condensed water, condensed water enters evaporimeter (4) from condenser (2) through U-shaped tube, condensed water in the evaporimeter (4) sprays in evaporimeter (4) by evaporimeter pump (11), the heat of chilled water in the absorption tube (B.B ') and being evaporated, the bromize lithium concentrated solution that water vapour after the evaporation is absorbed in the device (5) absorbs, and becomes weak solution; On the other hand, the weak solution of high pressure generator (1) and low pressure generator (3) is heated, evaporate water vapour, solution is concentrated, bromize lithium concentrated solution after concentrating is respectively through high-temperature heat exchanger (6) and low temperature heat exchanger (7) cooling, and enter in the absorber (5), spray through pre-cooled spray thrower (8), the concentrated solution that is sprayed at first is cooled after water (A.A ') system cools, interior with partially absorbing device (5) again weak solution is mixed, and mixed solution enters absorber (10), by absorber (10) mixed solution is entered in the absorber (5) once more and sprays the absorption water vapour once more, and so forth, constantly circulation.
Embodiment 2:
The present invention is used for lithium-bromide absorption-type refrigerating machine (containing the directly burning lithium bromide absorption cooling and warming water machine), the outlet that it is characterized in that high-temperature heat exchanger (6) and low temperature heat exchanger (7), can enter respectively in the absorber (5), can be communicated with pre-cooled spray thrower (8) shared or separately.Other are with embodiment 1.
Embodiment 3:
The present invention is suitable equally to the lithium bromide refrigerator of steam type, hot-water type.
After the present invention is used, can reduce the temperature of absorber (10) greatly, be difficult for producing cavitation erosion, can be because of the high motor that damages absorber (10) of temperature yet, therefore it is not subjected to the influence of factors such as refrigeration machine load variations, complete machine is stable, can be widely used in the lithium-bromide absorption-type refrigerating machine of different heat sources.
Claims (2)
1, the process that a kind of concentrated solution of lithium-bromide absorption-type refrigerating machine is pre-cooled, it is characterized in that it adopts three pump endless form, be that the interior bromize lithium dilute solution of absorber (5) is by generator pump (9), through high-temperature heat exchanger (6), low temperature heat exchanger (7) is sent into high pressure generator (1) and low pressure generator (3) respectively, bromize lithium dilute solution is heated the generation water vapour in high and low pressure generator (1.3), heat the lithium-bromide solution of low pressure generator (3) by the water vapour of high pressure generator (1) generation, form condensed water and enter condenser (2), and the weak solution that directly enters low pressure generator (3) through low temperature heat exchanger (7), the heating lithium-bromide solution, make it to produce steam, shift to condenser (2), after meeting cooling water (A.A ') system cools, form condensed water, condensed water enters evaporimeter (4) from condenser (2) through U-shaped tube, condensed water in the evaporimeter (4) sprays in evaporimeter (4) by evaporimeter pump (11), the heat of chilled water in the absorption tube (B.B ') and being evaporated, the bromize lithium concentrated solution that water vapour after the evaporation is absorbed in the device (5) absorbs, and becomes weak solution; On the other hand, the weak solution of high pressure generator (1) and low pressure generator (3) is heated, evaporate water vapour, solution is concentrated, bromize lithium concentrated solution after concentrating is respectively through high-temperature heat exchanger (6) and low temperature heat exchanger (7) cooling, and enter in the absorber (5), spray through pre-cooled spray thrower (8), at first be cooled after water (the A.A ') system cools by the concentrated solution that sprayed, interior with partially absorbing device (5) again weak solution is mixed, mixed solution enters absorber (10), by absorber (10) mixed solution is entered in the absorber (5) once more and sprays the absorption water vapour once more.
2, the pre-cooled process of the concentrated solution of a kind of lithium-bromide absorption-type refrigerating machine according to claim 1, it is characterized in that adjunction a connecting pipe on the tube connector of high-temperature heat exchanger (6) and low temperature heat exchanger (7), the other end of communicating pipe is entered in the absorber (5), and be communicated with pre-cooled spray thrower (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93115511A CN1054426C (en) | 1993-09-18 | 1993-09-18 | Concentrated solution precooling process for lithium bromide absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93115511A CN1054426C (en) | 1993-09-18 | 1993-09-18 | Concentrated solution precooling process for lithium bromide absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092853A CN1092853A (en) | 1994-09-28 |
| CN1054426C true CN1054426C (en) | 2000-07-12 |
Family
ID=4991086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93115511A Expired - Lifetime CN1054426C (en) | 1993-09-18 | 1993-09-18 | Concentrated solution precooling process for lithium bromide absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054426C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808058B (en) * | 2014-02-17 | 2015-12-09 | 双良节能系统股份有限公司 | Band water as refrigerant preheater two-stage Equations of The Second Kind lithium bromide absorption type heat pump unit |
| CN105180501B (en) * | 2015-09-07 | 2019-03-12 | 哈尔滨工业大学 | A kind of suction-type lithium bromide heat-exchange unit that solution outside is cooling |
| CN107576097B (en) * | 2017-09-14 | 2019-08-23 | 中国科学院理化技术研究所 | The cooling absorber of the alternating temperature that can be premixed and Absorption heat-transformer system |
-
1993
- 1993-09-18 CN CN93115511A patent/CN1054426C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1092853A (en) | 1994-09-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130918 Granted publication date: 20000712 |