CN1065041C - Hot-water type two-stage sorption refrigerator - Google Patents
Hot-water type two-stage sorption refrigerator Download PDFInfo
- Publication number
- CN1065041C CN1065041C CN931192641A CN93119264A CN1065041C CN 1065041 C CN1065041 C CN 1065041C CN 931192641 A CN931192641 A CN 931192641A CN 93119264 A CN93119264 A CN 93119264A CN 1065041 C CN1065041 C CN 1065041C
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- high pressure
- low
- heat exchanger
- low pressure
- absorber
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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
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The present invention relates to a hot water absorption refrigerating machine, particularly to a hot water lithium bromide absorption refrigerating machine. The present invention comprises a built-in condenser, a high pressure generator, a low pressure generator, a high pressure barrel of a high pressure absorber, a built-in low pressure generator, a low pressure barrel of an evaporator, a high pressure heat exchanger and a low pressure heat exchanger which are connected to form a two-stage absorption circulation refrigeration system through a corresponding pipeline and a protected type circulation pump. Low temperature (80 to 75 DEG C) hot water can be used as a driving heat source, and because temperature differences can reach 10 DEG C, the requirements of a refrigeration air conditioner can be satisfied under the condition of unfavorable parameters. The present invention is especially suitable for the utilization of solar energy and industrial low temperature exhaust heat.
Description
The invention belongs to a kind of is the absorption system of driving heat source, particularly refrigeration system with lithium bromide absorption with the low-temperature water heating.
Be the Absorption Refrigerator of thermal source with hot water at present, lithium-bromide absorption-type refrigerating machine particularly, be generally the single-stage circularly cooling, the driving heat source water temperature that requires is higher, when cooling water temperature is 32 ℃, make 9 ℃ of chilled waters of idle call, the inlet temperature that requires hot water is 88-90 ℃, the outlet hot water temperature is 83-85 ℃ (5 ℃ of the temperature difference), and this makes that low-temperature water heating (as 75-80 ℃ low-temperature water heating) is difficult to obtain utilize in this refrigeration machine.
The objective of the invention is to propose a kind of two-stage absorption refrigeration system of hot-water type, particularly the new construction of hot water lithium bromide absorbing refrigeration machine makes and can utilize low-temperature water heating (being not less than 75 ℃) to realize effectively refrigeration as driving heat source in this refrigeration system.
Structure of the present invention comprises generator, condenser, absorber, evaporimeter, heat exchanger and corresponding pipeline and circulating pump, be characterized in making condenser and high pressure generator to constitute first assembly, make low pressure generator and high pressure absorber constitute second assembly, first assembly and second assembly are arranged in parallel in the high pressure cylindrical shell (separating with dividing plate between two assemblies); Make low pressure generator and evaporimeter constitute the 3rd assembly, and it is arranged in the low pressure cylindrical shell; Above-mentioned high pressure cylinder is installed in the top of low pressure cylinder; Heat exchanger comprises hp heat exchanger and low pressure heat exchanger, these two heat exchangers are arranged on outside above-mentioned high pressure cylinder and the low pressure cylinder, and heat exchanger and two cylindrical shells be fixed on the same support, above-mentioned each parts are connected into the two-stage cycle refrigeration system by corresponding pipeline and protected type circulating pump.
For the hot water lithium bromide two-stage sorption refrigerator, as a kind of condition of work, the present invention adopts lithium bromide-water right as working medium, with 80-75 ℃ low-temperature water heating as driving heat source.
Said each parts of the present invention, comprise that high pressure generator, low pressure generator, condenser, high pressure absorber, low-pressure absorber, hp heat exchanger and low pressure heat exchanger all can adopt tubular structure, can adopt intensify heat transfer pipe or plain tube to conduct heat, augmentation of heat transfer also can be set in the heat-transfer pipe be bumped into part.
The present invention adopts two-stage absorption refrigeration circulation, comprise hiigh pressure stage cyclic process and low-pressure stage cyclic process, cold-producing medium water produces in hiigh pressure stage, the concentrated solution that absorbs produces in low-pressure stage, in the hot water lithium bromide two-stage sorption refrigerator, its process of refrigerastion is: the LiBr weak solution in the high pressure generator is by the hot water indirect, the water as refrigerant steam that produces is condensed into water in condenser, and solution enters high pressure absorber after being concentrated, the water vapour that absorption comes from low pressure generator and become weak solution, send high pressure generator with pump back to through hp heat exchanger again, form the circulation of hiigh pressure stage.Solution by low pressure generator inspissation enters low-pressure absorber, absorbs by condenser to flow to water as refrigerant on the evaporimeter through the water vapour that evaporation is produced, and becomes weak solution and returns low pressure generator, and water as refrigerant freezes because of the evaporation heat absorption in evaporimeter.Coupling control by in each parameters such as temperature, pressure and solution concentrations just can be implemented in continuous cooling under the low heat source temperature.
Device provided by the invention can be about under 32 ℃ of conditions at cooling water, utilize 75-80 ℃ low-temperature water heating to produce 9 ℃ of chilled waters that are suitable for idle call, and the temperature difference of utilizing of hot water reaches more than 10 ℃, and this will provide effective means for utilizing solar energy and industrial low-temperature waste heat to carry out refrigeration air-conditioner.When using solar air-conditioner system,, can significantly improve the thermal efficiency of solar energy collector system on the one hand, thereby also can select for use the lower solar thermal collector of cost to reduce the cost of whole system greatly simultaneously because the required hot water temperature of generator reduces.When being used for industrial exhaust heat and utilizing purpose, discarded obsolete spent hot water below 80 ℃ in a large number can be used for air-conditioning or cooling, not only created benefit but also can significantly reduce thermal pollution environment.
Below be drawing explanation of the present invention:
Fig. 1 is a hot water lithium bromide two-stage sorption refrigerator textural association schematic diagram;
Fig. 2 is the expression of two-stage absorption refrigeration cyclic process on enthalpy-dense (i-ζ) figure.
Embodiment
Present embodiment is a hot water lithium bromide two-stage sorption refrigerator, and its textural association schematic diagram as shown in Figure 1.This refrigeration machine comprises the high pressure cylinder A that is fixed on the support C, low pressure cylinder B, hp heat exchanger 7 and low pressure heat exchanger 8.In the cylindrical shell of high pressure cylinder A, be arranged in juxtaposition first assembly that constitutes by high pressure generator 1 and condenser 2 and second assembly that constitutes by low pressure generator 3 and high pressure absorber 4, separate by dividing plate between first assembly and second assembly.In the cylindrical shell of low pressure cylinder B, arrange the 3rd assembly that constitutes by low-pressure absorber 5 and evaporimeter 6, ' 12 ' 13 connect into the two-stage absorption refrigeration system to above-mentioned each parts by pipeline 14 and protected type circulating pump 9 ' 10 ' 11, concrete connected mode and process of refrigerastion are: the LiBr weak solution in the high pressure generator 1 is by the hot water indirect, the water as refrigerant steam that produces is condensed into water in condenser 2, solution after being concentrated in the high pressure generator 1 is sent into high pressure absorber 4 by high pressure absorption pump 13 after by hp heat exchanger 7 again, the water vapour that absorption comes from low pressure generator 3 and become weak solution, these weak solution parts are circulated to high pressure absorber 4 by high pressure absorption pump 13 and dilute once, part weak solution is then sent high pressure generator 1 back to by high pressure generating pump 12 tying-in hp heat exchangers 7 and is formed the solution that hiigh pressure stage circulates in low pressure generator 3 inspissations and send into low-pressure absorber 5 through low pressure absorption pump 11 again by low pressure heat exchanger 8, absorption flow to the water vapour that the water as refrigerant on the evaporimeter 6 is produced through evaporation by condenser 2, become weak solution, again by sending low pressure generator 3 back to behind the low pressure generating pump 10 tying-in low pressure heat exchangers, water as refrigerant freezes because of evaporation heat absorption in evaporimeter 6, and the water as refrigerant that flows down from evaporimeter 6 pumps into evaporimeter 6 again by cryogenic fluid pump 9 and circulates.This two-stage absorption refrigeration cyclic process expression such as Fig. 2 on enthalpy-dense (i-ζ) figure, a-b-c-d is the hiigh pressure stage cyclic process among the figure, a '-b '-c '-d ＇ is the low-pressure stage cyclic process, by intermediate pressure P ＇
KTwo-stage is coupled together, and cold-producing medium water produces in hiigh pressure stage, and the concentrated solution that absorbs produces in low-pressure stage.Other mark meanings among the figure are as follows: P
K-condensing pressure, P
o-evaporating pressure, t
2-absorber outlet solution temperature, t
4Solution temperature in the-generator.
Claims (3)
1. hot water operated absorption refrigerating machine, hot water lithium bromide absorbing refrigeration machine particularly, comprise generator, condenser, absorber, evaporimeter, the genial corresponding pipeline of heat exchange and circulating pump, it is characterized in that making condenser (2) and high pressure generator (1) to constitute first assembly, make low pressure generator (3) and high pressure absorber (4) constitute second assembly, first assembly and second assembly are arranged in parallel in a high pressure cylinder (A) body; Make low-pressure absorber (5) and evaporimeter (6) constitute the 3rd assembly, and it is arranged in low pressure cylinder (B) body; Above-mentioned high pressure cylinder (A) is installed in the top of low pressure cylinder (B); Hp heat exchanger (7) and low pressure heat exchanger (8) are arranged on outside two cylindrical shells, and are fixed on the same support with cylindrical shell; Above-mentioned each parts connect into the two-stage absorption cycle refrigeration system in the following manner by corresponding pipeline and protected type circulating pump: lithium-bromide solution feeds hp heat exchanger (7) by high pressure generator (1) by pipeline, send into high pressure absorber (4) from hp heat exchanger (7) by high pressure absorption pump (13) again, a part of afterwards solution is recycled to high pressure absorber by high pressure absorption pump (13), another part solution is sent high pressure generator (1) back to by high pressure generating pump (12) tying-in hp heat exchanger (7) and formed the hiigh pressure stage circulation: the lithium-bromide solution at low pressure generator (3) is sent into low-pressure absorber (5) through low pressure absorption pump (11) again by low pressure heat exchanger (8), constitutes the low-pressure stage circulation by sending low pressure generator (3) behind low pressure generating pump (10) the tying-in low pressure heat exchanger (8) back to again.
2. by the described hot water operated absorption refrigerating machine of claim 1, it is characterized in that this refrigeration machine adopts lithium bromide-water right as working medium, with 80～75 ℃ low-temperature water heatings as driving heat source.
3. by the described hot water operated absorption refrigerating machine of claim 1, it is characterized in that said high pressure generator (1), low pressure generator (3), condenser (2), high pressure absorber (4), low-pressure absorber (5), hp heat exchanger (7) and low pressure heat exchanger (8) all adopt tubular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN931192641A CN1065041C (en) | 1993-10-17 | 1993-10-17 | Hot-water type two-stage sorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN931192641A CN1065041C (en) | 1993-10-17 | 1993-10-17 | Hot-water type two-stage sorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1101973A CN1101973A (en) | 1995-04-26 |
| CN1065041C true CN1065041C (en) | 2001-04-25 |
Family
ID=4992840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN931192641A Expired - Fee Related CN1065041C (en) | 1993-10-17 | 1993-10-17 | Hot-water type two-stage sorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1065041C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324270C (en) * | 2005-08-15 | 2007-07-04 | 王宝根 | Multiple energy sources driven lithium bromide refrigerating air conditioner |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227492C (en) * | 2003-03-11 | 2005-11-16 | 张跃 | Main body of absorbing air-conditioner |
| CN1312449C (en) * | 2003-07-23 | 2007-04-25 | 张跃 | Absorption type air-conditioning system |
| CN100344917C (en) * | 2006-04-05 | 2007-10-24 | 江苏双良空调设备股份有限公司 | Hot water two-stage multi-section lithium bromide absorption cold-water machine set |
-
1993
- 1993-10-17 CN CN931192641A patent/CN1065041C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324270C (en) * | 2005-08-15 | 2007-07-04 | 王宝根 | Multiple energy sources driven lithium bromide refrigerating air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1101973A (en) | 1995-04-26 |
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