CN1177712A - Direct-burning type lithium bromide absorption type heat pump set system - Google Patents
Direct-burning type lithium bromide absorption type heat pump set system Download PDFInfo
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- CN1177712A CN1177712A CN97107130A CN97107130A CN1177712A CN 1177712 A CN1177712 A CN 1177712A CN 97107130 A CN97107130 A CN 97107130A CN 97107130 A CN97107130 A CN 97107130A CN 1177712 A CN1177712 A CN 1177712A
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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
Abstract
The directly-combustion type lithium bromide absorption heat pump unit system comprises high-pressure genrator, low-pressure generator, condenser, evaporator, absorber, high-temp. heat-exchanger, low-temp. heat-exchanger, condensing agent pump and solution pump which are interconnected via pipeline and valves. It is characterized by that two heat source valves are respectively added on the cold water inlet and outlet pipelines of the evaporator, and respectively connected with inlet and outlet of working heat source when the heat pump is operated, and the hot water valves are respectively added on the cooling water inlet and outlet pipelines of the absorber and condenser. Said invention possesses high thermal efficiency and it can be up to about 1.6-2.
Description
The present invention relates to a kind of new equipment of producing cold (heat) water source, be used in the heat that directly burns with fuel oil, fuel gas and make thermal source, and have refrigeration, the heating of temperature waste heat sources occasions such as vapour, water.
The direct-burning type lithium bromide absorption type water cooling and heating units system of widely selling is a thermal source with fuel oil, the direct heat that burns of combustion gas in the market, and the hot water or cold water is provided, and freezes summer and heating in winter for the user.But the thermodynamic coefficient when this unit provides the cold water running is 1-1.1, and producing the hot water running then is the fuel heat of utilizing fuel merely, and the thermal efficiency only is about 0.85, and obviously, the thermal efficiency when heating running is lower.
The object of the present invention is to provide a kind of higher direct-burning type lithium bromide absorption type heat pump set system of the thermal efficiency that heats when turning round.
The present invention is that realize like this a kind of is cold-producing medium with water, lithium bromide water solution is an absorbent, with all gases, liquid fuel is the direct-burning type lithium bromide absorption type heat pump set system of the energy, comprise high pressure generator, low pressure generator, condenser, evaporimeter, absorber, high-temperature solution heat exchanger, the cryogenic fluid heat exchanger, cryogenic fluid pump and solution pump, above-mentioned parts communicate by the pipe valve connection, evaporimeter cold water advances, on the export pipeline respectively device cold valves is arranged, the cooling water of absorber and condenser advances, on the export pipeline respectively device cooling water valve is arranged, be connected to valve D between high-temperature solution heat exchanger and low pressure generator, be characterized in that evaporimeter cold water advances, be set side by side with heat source valve with cold valves on the export pipeline, heat source valve advances with work thermal source when heat pump turns round, outlet connects; On the cooling water import and export pipeline of absorber and condenser, be set side by side with hot water valve with cooling water valve; During cooling operation, heat source valve and hot water valve are closed, and cold valves, cooling water valve and valve D open, and produce cold water with double effect absorption kind of refrigeration cycle (modes such as series, parallel, connection in series-parallel) work; During the heating running, produce hot water with the double-effect heat pump periodic duty, cold valves and cooling water valve close, and heat source valve hot water valve and valve D open.
The present invention can be achieved in that also a kind of is cold-producing medium with water, lithium bromide water solution is an absorbent, with all gases, liquid fuel is the direct-burning type lithium bromide absorption type heat pump set system of the energy, comprise high pressure generator, low pressure generator, condenser, evaporimeter, absorber, high-temperature solution heat exchanger, the cryogenic fluid heat exchanger, cryogenic fluid pump and solution pump, above-mentioned parts communicate by the pipe valve connection, evaporimeter cold water advances, on the export pipeline respectively device cold valves is arranged, the cooling water of absorber and condenser advances, on the export pipeline respectively device cooling water valve is arranged, be connected to valve D between high-temperature solution heat exchanger and low pressure generator, be characterized in that evaporimeter cold water advances, be set side by side with heat source valve with cold valves on the export pipeline, heat source valve advances with work thermal source when heat pump turns round, outlet connects; On the cooling water import and export pipeline of absorber and condenser, be set side by side with hot water valve with cooling water valve; On high pressure generator cryogen export pipeline, have additional bypass line and by-passing valve A, by-passing valve A outlet and connect condenser; On high-temperature heat exchanger intermediate solution export pipeline, be set side by side with valve B with valve D; On low pressure generator and concentrated solution pipeline that the cryogenic fluid heat exchanger links to each other, a valve C is set, valve B outlet connects the concentrated solution pipeline between low temperature heat exchanger and valve C, during cooling operation, heat source valve, hot water valve and valve A, B close, cold valves, cooling water valve and valve D, C open, and produce cold water with double effect absorption kind of refrigeration cycle (comprising modes such as series, parallel, connection in series-parallel) work; Adopt the work of single-action heat pump cycle during the heating running, heat source valve, hot water valve and valve A, B open, and cold valves, cooling water valve and valve D, C close.
The direct-burning type lithium bromide absorption type heat pump set system that this patent proposes is compared with the direct-burning type lithium bromide absorption type water cooling and heating units system, and kind of refrigeration cycle is identical, the drive manner that different is when producing hot water.Source pump is by first kind absorption heat pump cycle operation, power source is fuel oil, combustion gas or other combustible that feeds in the high pressure generator, the work thermal source is the low-temperature heat source that feeds in the evaporimeter, can be waste heat source such as vapour, water, also can be to lead to cooling tower, cooling water to be lowered the temperature, the thermodynamic coefficient of this unit is 1-1.1 still during refrigeration, when heating, the single-action heat pump cycle can reach 1.6-1.7, and the double-effect heat pump circulation can reach about 2.
Obviously, adopt the direct-burning type lithium bromide absorption type heat pump set system operating ratio to adopt the operation of direct combustion type water cooling and heating units system to have bigger energy-saving effect when heating, this heat pump cycle heating system that utilizes, use is early arranged in compression-type refrigerating system, as change heat pump type air conditioner into the electrically heated domestic air conditioner of employing, energy-saving effect is self-evident.
When using this patent direct-burning type lithium bromide absorption type heat pump set system, the user should have operational low-temperature heat source, and this has certain limitation with regard to the use that makes source pump, but then provides a kind of energy-saving machine set system to the place with low-temperature heat source.
Fig. 1 is embodiments of the invention one structural representations.
Fig. 2 is embodiments of the invention two structural representations.
Below in conjunction with accompanying drawing the present invention is made a detailed description:
What this patent proposed is new departure of direct-burning type lithium bromide absorption type heat pump set system, accompanying drawing 1 is depicted as one of direct-burning type lithium bromide absorption type heat pump set system scheme, no great difference on this unit and the direct-burning type lithium bromide absorption type water cooling and heating units system structure, only pipe-line system changes.This is a kind of system of double-effect lithium bromide absorption chiller as seen from Figure 1.Now technical characteristic, structure, composition, operation principle are described as follows:
This is a kind of Cooling and Heat Source equipment of producing, and is power source with heat energy, the combustion heat of the normally various liquid of this heat energy, gaseous fuel.With water is cold-producing medium, and lithium bromide water solution is an absorbent, utilizes the principle of double-effect lithium bromide absorption type refrigeration, produces cold in evaporimeter, and produce heat in absorption-condenser.
Unit is made up of high pressure generator 9, low pressure generator 2, condenser 1, evaporimeter 4, absorber 3, high-temperature solution heat exchanger 8, cryogenic fluid heat exchanger 7, cryogenic fluid pump 5, solution pump 6 and each pipeline valve member.Unit is that air-tightness requires high vacuum equipment.For keeping the vacuum state in the unit, be provided with air extractor in the unit, this air extractor can be the oil-sealed rotary pump extract system, also can be automatic pumping system.Air extractor is not because of belonging to the application range of this patent, not expression among the figure.
During cooling operation, 6. 5. 4. 2. valve close, valve 1. 3. 7. 8. (D) open.
Absorbing the weak solution that ends in the absorber 3 carries by solution pump 6, enter high pressure generator 9 through low temperature heat exchanger 7 and high-temperature heat exchanger 8, in high pressure generator, weak solution is heated by the combustion heat of fuel (liquid or gaseous fuel), water as refrigerant steam is overflowed, and weak solution is condensed into intermediate solution.Intermediate solution enters low pressure generator 2 through high-temperature heat exchanger 8.In high-temperature heat exchanger, high temperature intermediate solution and low temperature weak solution are carried out heat exchange, have improved the temperature of the weak solution that enters high pressure generator, have then reduced the fuel consumption of high pressure generator.High temperature refrigerant vapour (the saturated vapour pressure 600-700mHg that overflows in the high pressure generator, the superheated steam that saturated-steam temperature is about 95 ℃) enters low pressure generator once more as heating source heating intermediate solution, refrigerant vapour is overflowed once more, and intermediate solution is condensed into concentrated solution.Concentrated solution is cooled off by weak solution through low temperature heat exchanger 7, and temperature enters absorber 3 after reducing, and is absorbed in the refrigerant vapour that produces in the evaporimeter.Concentrated solution becomes weak solution after absorbing water vapour again, and the absorption heat that produces in the absorption process is taken out of by the cooling water that flows in the absorber tube.The concentrated solution temperature enters the cooling load that absorber can reduce absorber after reducing, and on the other hand, the weak solution temperature enters low pressure generator after raising, and then can reduce the heating steam consumption of low pressure generator.Thereby improved the thermal efficiency of unit.Absorb the weak solution that ends in the absorber and deliver to high pressure generator by solution pump again, repeat said process, this has just constituted the solution circulation.
The refrigerant vapour that produces in the low pressure generator (saturated vapour pressure 50-60mmHg, the superheated steam that saturated-steam temperature is about 40 ℃) the refrigerant vapour water as refrigerant that condensation forms in low pressure generator that produces in high pressure generator (this moment, low pressure generator was equivalent to the condenser of high pressure generator) enters condenser 1, the former, be condensed into water as refrigerant by the water quench that flows in the pipe, enter evaporimeter 4 after the water as refrigerant decompression throttling, behind the interior flowing cold water heat of absorption tube, flash to refrigerant vapour (saturated vapour pressure 6-7mmHg, the saturated vapor that saturation temperature is about 5 ℃) pipe inner cold water temperature and reduce (generally reducing to 7 ℃) generation refrigeration effect by 12 ℃.The refrigerant vapour that produces in the evaporimeter enters absorber, is absorbed by the concentrated solution from low temperature heat exchanger, and this has just constituted the water as refrigerant circulation.Along with constantly carrying out of circulation, unit is produced cold continuously.
Thermodynamic coefficient ξ during cooling operation
c=Q
o/ Q
g=(1-1.1), and in the formula, Q
oThe thermic load of-evaporimeter; Q
gThe thermic load of-generator.
The double-effect heat pump cycle operation is made the time in the heating running, valve 2. 4. 5. 6. (D) open, 8. 7. 3. 1. valve close.Cold water and cooling water pump are out of service, and heat-exchanger pump is opened with work thermal source pump, and hot-water return is opposite with former chilled(cooling) water return (CWR), 2. enters condenser through valve earlier, enters absorber again and is 4. gone out by valve, delivers to the user and uses.Work thermal source (about 30 ℃ of temperature) 5. enters evaporimeter by valve, is reduced to 25 ℃ and is 6. gone out by valve.This moment, the hot water temperature of absorber outlet can be to 55 ℃.Hot-water return also can be earlier through absorber again through condenser, in condenser, make high-temperature-hot-water, pressure raises in the high pressure generator but may cause, and in addition, circulates in high concentration region and carries out, and is easy to generate crystallization, therefore the hot water temperature who makes is subjected to certain restriction.The heating cycle operation is compared with the kind of refrigeration cycle running, only feeds the work thermal source in the evaporimeter and replaces cold water, and this work thermal source can be with waste heat source such as vapour, water, and electricity can be to lead to cooling tower, cooling water to be lowered the temperature.And pass to the hot water of producing in the chilled(cooling) water return (CWR).
ξ during the heat pump running
h=(Q
k+ Q
a)/Q
g=(Q
g+ Q
o)/Q
g=1+Q
o/ Q
g=1+ ξ
c, Q in the formula
kThe thermic load of-condenser; Q
aThe thermic load of-absorber; Q
gThe thermic load of-generator.This shows double-effect heat pump unit ξ
h=1+ (1-1.1)=2-2.1.
This shows, the mono-potency lithium bromide Absorption Cooling System that this cyclic system is general, different persons feed low-temperature heat source in evaporimeter, and evaporating temperature improves, thereby solution temperature raises in the absorber, can make hot water in absorber.Because having adopted the high-grade heat source is power source (combustion heat of fuel-firing gas-firing), then can improve solution temperature in the generator, condensation temperature raises.Can in condenser, make the hot water of higher temperature.Heat back 59 ℃ as the hot water by 55 ℃ in the absorber and go out, if 62 ℃ of the minimum temperatures of solution in the absorber are in the evaporimeter, the work thermal source advances 25 ℃ for 30 ℃ and goes out, 22 ℃ of evaporating temperatures, evaporating pressure 20mmHg, then weak solution concentration 58.9%, hot water advances 61 ℃ for 59 ℃ and goes out in the condenser, 65 ℃ of condensation temperatures, condensing pressure 188mmHg, 124 ℃ of the maximum temperatures of solution in the generator, strong solution concentration 63%, the thermodynamic coefficient ξ of mono-potency lithium bromide Absorption Cooling System
c=0.65-0.7, thereby the hot water coefficient ξ of mono-potency lithium bromide absorption heat pump
h=1+0.65～0.7=1.65～1.7.Obviously, no matter be single-action or economic benefits and social benefits direct-fired absorption source pump, the COP value during heating is much larger than the hot and cold water unit, thereby, in the occasion that possesses this low-temperature working thermal source, adopt this unit to have remarkable energy saving effect.
Illustrate as can be known that to sum up this patent has proposed two kinds of new departures of direct-burning type lithium bromide absorption type heat pump unit, comprises system, equipment composition, pipeline connection etc.
Claims (2)
1, a kind of is cold-producing medium with water, lithium bromide water solution is an absorbent, with all gases, liquid fuel is the direct-burning type lithium bromide absorption type heat pump set system of the energy, comprise high pressure generator (9), low pressure generator (2), condenser (1), evaporimeter (4), absorber (3), high-temperature solution heat exchanger (8), cryogenic fluid heat exchanger (7), cryogenic fluid pump (5) and solution pump (6), above-mentioned parts communicate by the pipe valve connection, evaporimeter (4) cold water advances, on the export pipeline respectively device cold valves (7) is arranged, (8), the cooling water of absorber and condenser advances, on the export pipeline respectively device cooling water valve (3) is arranged, (1), be connected to valve (D) between high-temperature solution heat exchanger (8) and low pressure generator (2), it is characterized in that evaporimeter (4) cold water advances, on the export pipeline with cold valves (7), (8) be set side by side with heat source valve (5), (6), valve (5), (6) with the advancing of work thermal source when heat pump turns round, outlet connects; On the cooling water import and export pipeline of absorber (3) and condenser (1), be set side by side with hot water valve (4), (2) with cooling water valve (3), (1); During cooling operation, close heat source valve (5), (6) and hot water valve (4), (2), and cold valves (7), (8), cooling water valve (3), (1) and valve (D) are opened, and produces cold water with double effect absorption kind of refrigeration cycle (modes such as series, parallel, connection in series-parallel) work; During the heating running, produce hot water with the double-effect heat pump periodic duty, close cold valves (7), (8) and cooling water valve (3), (1), and heat source valve (5), (6), hot water valve (4), (2) and valve (D) are opened.
2, a kind of is cold-producing medium with water, lithium bromide water solution is an absorbent, with all gases, liquid fuel is the direct-burning type lithium bromide absorption type heat pump set system of the energy, comprise high pressure generator (9), low pressure generator (2), condenser (1), evaporimeter (4), absorber ⑶, high-temperature solution heat exchanger (8), cryogenic fluid heat exchanger (7), cryogenic fluid pump (5) and solution pump (6), above-mentioned parts communicate by the pipe valve connection, evaporimeter (4) cold water advances, on the export pipeline respectively device cold valves (7) is arranged, (8), the cooling water of absorber and condenser advances, on the export pipeline respectively device cooling water valve (3) is arranged, (1), be connected to valve (D) between high-temperature solution heat exchanger (8) and low pressure generator (2), it is characterized in that evaporimeter (4) cold water advances, on the export pipeline with cold valves (7), (8) be set side by side with heat source valve (5), (6), valve (5), (6) with the advancing of work thermal source when heat pump turns round, outlet connects; On the cooling water import and export pipeline of absorber (3) and condenser (1), be set side by side with hot water valve (4), (2) with cooling water valve (3), (1); On high pressure generator (9) cryogen export pipeline, have additional the outlet of bypass line (10) and by-passing valve (A), by-passing valve (A) and connect condenser (1); On high-temperature heat exchanger (8) intermediate solution export pipeline, be set side by side with valve (B) with valve (D); On low pressure generator (2) and concentrated solution pipeline that cryogenic fluid heat exchanger (7) links to each other, a valve (C) is set, valve (B) outlet connects the concentrated solution pipeline between low temperature heat exchanger (7) and valve (C), during cooling operation, heat source valve (5), (6), hot water valve (4), (2) and valve (A), (B) close, cold valves (7), (8), cooling water valve (3), (1) and valve (D), (C) open, and produce cold water with double effect absorption kind of refrigeration cycle (comprising modes such as series, parallel, connection in series-parallel) work; Adopt the work of single-action heat pump cycle during the heating running, heat source valve (5), (6), hot water valve (4), (2) and valve (A), (B) open, and cold valves (7), (8), cooling water valve (3), (1) and valve (D), (C) close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107130A CN1075883C (en) | 1997-09-25 | 1997-09-25 | Direct-burning type lithium bromide absorption type heat pump set system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107130A CN1075883C (en) | 1997-09-25 | 1997-09-25 | Direct-burning type lithium bromide absorption type heat pump set system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177712A true CN1177712A (en) | 1998-04-01 |
| CN1075883C CN1075883C (en) | 2001-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97107130A Expired - Fee Related CN1075883C (en) | 1997-09-25 | 1997-09-25 | Direct-burning type lithium bromide absorption type heat pump set system |
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|---|---|
| CN (1) | CN1075883C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402951C (en) * | 2006-08-08 | 2008-07-16 | 大连三洋制冷有限公司 | Steam or hot water type lithium bromide absorption cooling and warming water machine |
| CN104075485A (en) * | 2014-07-03 | 2014-10-01 | 李建峰 | Hot dry rock double-effect lithium bromide absorption heat pump heating system |
| CN107178927A (en) * | 2017-06-22 | 2017-09-19 | 江苏科技大学海洋装备研究院 | A kind of BOG of LNG Power Vessels utilizes system and method for work |
| CN108534213A (en) * | 2018-05-11 | 2018-09-14 | 宋世海 | A kind of low ebb electric heat storage composite adsorption type air source heat pump circulating heating system |
| CN109595851A (en) * | 2018-09-26 | 2019-04-09 | 中山市恒乐电器有限公司 | A kind of combined heat pump absorption system and the water heater using it |
| CN112815576A (en) * | 2019-11-18 | 2021-05-18 | 海南光谱太阳能技术工程有限公司 | Comprehensive energy-saving system for solar energy utilization |
| CN113739170A (en) * | 2021-08-02 | 2021-12-03 | 江苏科技大学 | Coating workshop VOCs treatment and temperature combined control system and method |
| CN114216287A (en) * | 2021-12-24 | 2022-03-22 | 北京华源泰盟节能设备有限公司 | Method and system for controlling heat source valve of absorption heat pump based on multiple PID |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650467A (en) * | 2012-04-25 | 2012-08-29 | 深圳力合电力工程有限公司 | Single-effect mixed heat pump unit and double-effect mixed heat pump unit |
-
1997
- 1997-09-25 CN CN97107130A patent/CN1075883C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402951C (en) * | 2006-08-08 | 2008-07-16 | 大连三洋制冷有限公司 | Steam or hot water type lithium bromide absorption cooling and warming water machine |
| CN104075485A (en) * | 2014-07-03 | 2014-10-01 | 李建峰 | Hot dry rock double-effect lithium bromide absorption heat pump heating system |
| CN107178927A (en) * | 2017-06-22 | 2017-09-19 | 江苏科技大学海洋装备研究院 | A kind of BOG of LNG Power Vessels utilizes system and method for work |
| CN107178927B (en) * | 2017-06-22 | 2023-01-10 | 江苏科技大学海洋装备研究院 | BOG utilization system of LNG power ship and working method |
| CN108534213A (en) * | 2018-05-11 | 2018-09-14 | 宋世海 | A kind of low ebb electric heat storage composite adsorption type air source heat pump circulating heating system |
| CN109595851A (en) * | 2018-09-26 | 2019-04-09 | 中山市恒乐电器有限公司 | A kind of combined heat pump absorption system and the water heater using it |
| CN112815576A (en) * | 2019-11-18 | 2021-05-18 | 海南光谱太阳能技术工程有限公司 | Comprehensive energy-saving system for solar energy utilization |
| CN113739170A (en) * | 2021-08-02 | 2021-12-03 | 江苏科技大学 | Coating workshop VOCs treatment and temperature combined control system and method |
| CN114216287A (en) * | 2021-12-24 | 2022-03-22 | 北京华源泰盟节能设备有限公司 | Method and system for controlling heat source valve of absorption heat pump based on multiple PID |
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|---|---|
| CN1075883C (en) | 2001-12-05 |
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