CN108645071A - The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect - Google Patents
The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect Download PDFInfo
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- CN108645071A CN108645071A CN201810408046.5A CN201810408046A CN108645071A CN 108645071 A CN108645071 A CN 108645071A CN 201810408046 A CN201810408046 A CN 201810408046A CN 108645071 A CN108645071 A CN 108645071A
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- condenser
- solution
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- absorber
- pump
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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
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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
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
-
- 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
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
Abstract
The present invention relates to a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type units of variable effect, belong to air conditioner technical field.Including：Low pressure generator（1）, high pressure generator（2）, condenser（3）, high-temperature heat exchanger（4）, low temperature heat exchanger（5）, absorber（6）, evaporator（7）, solution pump（8）, cryogenic fluid pump（9）, force (forcing) pump（10）, single-action condenser（11）, medium temperature water regulating valve（12）, medium temperature water regulating valve adjusts the medium temperature water into single-action condenser, and the high temperature refrigerant vapour parallel connection in high pressure generator enters low pressure generator and single-action condenser.The unit both can economic benefits and social benefits operating mode operation, also can the compound single-action of economic benefits and social benefits or full single-action operating mode operation.
Description
Technical field
The present invention relates to a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type units of variable effect.Belong to air-conditioning to set
Standby technical field.
Background technology
Lithium bromide absorbing type refrigeration/heat pump unit of existing single driving heat source has single-effect type（Hereinafter referred to as single-effect type
Unit）And dual effect type（Hereinafter referred to as dual effect type unit）Two kinds of structural shapes.
Single-effect type unit is as shown in Figure 1, by low pressure generator 1, condenser 3, low temperature heat exchanger 5, absorber 6, evaporation
Device 7, solution pump 8, cryogenic fluid pump 9 and control system（It is not shown in figure）And pipeline, the valve of connecting components are constituted.Low temperature flow
Cool down through evaporator 7；Middle stream of warm water heats up through absorber 6 and condenser 3；Driving heat source flows through low pressure generator 1, discharges heat
Heating concentration lithium-bromide solution.When unit operation, is extracted out by cryogenic fluid pump 9 and absorb stream from the water as refrigerant under 7 top spray of evaporator
Heat through water at low temperature in 7 heat-transfer pipe of evaporator, is vaporized into after refrigerant vapour to enter in absorber 6 and is brominated the suction of lithium concentrated solution
It receives, the heat of release is walked by the middle warm water absorption band flowed through in 6 heat-transfer pipe of absorber, and lithium bromide concentrated solution absorbs refrigerant vapour
Concentration is thinning afterwards, is extracted out and is sent into low pressure generator 1 through low temperature heat exchanger 5 by solution pump 8 and heats concentration by driving heat source,
The refrigerant vapour of concentration out, which enters in condenser 3, to be returned to after the cooling condensation of middle warm water in evaporator 7, and the bromination after concentrating
Lithium solution is then returned to through low temperature heat exchanger 5 in absorber 6.
Dual effect type unit as shown in Fig. 2, by low pressure generator 1, high pressure generator 2, condenser 3, high-temperature heat exchanger 4,
Low temperature heat exchanger 5, absorber 6, evaporator 7, solution pump 8, cryogenic fluid pump 9, force (forcing) pump 10 and control system（It is not shown in figure）
And pipeline, the valve of connecting components are constituted.Water at low temperature flows through the cooling of evaporator 7；Middle stream of warm water is through absorber 6 and condenser 3
Heating；Driving heat source flows through high pressure generator 2, and release heat concentrates lithium-bromide solution.When unit operation, by cryogenic fluid pump 9
It extracts and is absorbed from the water as refrigerant under 7 top spray of evaporator the heat for flowing through water at low temperature in 7 heat-transfer pipe of evaporator out, be vaporized into cryogen
Enter in absorber 6 after steam and is brominated the absorption of lithium concentrated solution, the middle warm water that the heat of release is flowed through in 6 heat-transfer pipe of absorber
Concentration is thinning after absorption is taken away, and lithium bromide concentrated solution absorbs refrigerant vapour, is extracted out by solution pump 8 and through low temperature heat exchanger 5
Tentatively heating concentration is sent into low pressure generator 1, and the lithium-bromide solution after initial concentration is pressurized 10 extraction of pump and is warmed through height again
Exchanger 4 enters high pressure generator 2, is heated concentration again by driving heat source wherein, the lithium-bromide solution after concentration most passes through afterwards
High-temperature heat exchanger 4, low temperature heat exchanger 5 return in absorber 6, and the high temperature that solution concentration generates in high pressure generator 2 is cold
Agent steam then enters as heat source heating concentration lithium-bromide solution in low pressure generator 1, cooling itself is condensed into water as refrigerant, and low
The refrigerant vapour that solution concentrates out in pressure generator 1 enters condenser 3 together, and evaporator is returned to after the cooling condensation of middle warm water
In 7.
When driving heat source grade is relatively high or be water at low temperature and middle warm water nominal condition parameter it is relatively good when, can be with
Dual effect type unit is selected, the efficiency of energy utilization of driving heat source is high at this time, up to 1.4 or so.When driving heat source grade is relatively low,
Or when water at low temperature and the poor nominal condition parameter of middle warm water, then single-effect type unit can only be selected, at this time driving heat source
Efficiency of energy utilization it is relatively low, only 0.8 or so.When unit structural shape once it is determined that and by manufacture out after,
During its entire service life, efficiency of energy utilization is also just substantially fixed.
In some cases, due to the grade of driving heat source or be water at low temperature and middle warm water nominal condition ginseng
Number it is poor, unit can only select single-effect type structure, although or dual effect type structure can be selected, its cost is too high, comprehensive
Conjunction considers still select single-effect type structure.Single-effect type unit is although at low cost, but its efficiency of energy utilization is also low.
And during the use of unit, the operating parameter of water at low temperature and middle warm water is to occur with environment temperature and using needing
Variation or even driving heat source grade can also change, so that the parameter in some periods is to be suitble to economic benefits and social benefits work
Condition operation, can existing single-effect type unit this structural shape once chosen, this will not occur for efficiency of energy utilization
Variation in matter, this will result in certain waste in using energy source.If there is a kind of unit of new structural shape, work as operating mode
It when parameter is poor, can be run, when duty parameter improves, and can be run with economic benefits and social benefits patterns, then with single-action pattern
Not only equipment cost can be reduced, but also the utilization ratio of drive energy can be improved, it is energy saving.
Invention content
The purpose of the present invention is exactly to design a kind of solution lithium bromide absorption type refrigeration heat pump of falling tandem type unit of variable effect,
When operating parameter is preferable, the operation of economic benefits and social benefits operating mode, efficiency of energy utilization height；It, can the compound single-action of economic benefits and social benefits after operating parameter is deteriorated
Operating mode is run or single-action operating mode operation completely, and the cooling and warming ability of unit is improved by reducing efficiency of energy utilization.
The object of the present invention is achieved like this：A kind of solution lithium bromide absorption type refrigeration heat pump of falling tandem type of variable effect
Unit, including：Low pressure generator, high pressure generator, condenser, high-temperature heat exchanger, low temperature heat exchanger, absorber, evaporation
Device, solution pump, cryogenic fluid pump, force (forcing) pump, single-action condenser, medium temperature water regulating valve.Water at low temperature flows through evaporator, and middle stream of warm water is through inhaling
Device, condenser, single-action condenser are received, driving heat source flows through high pressure generator.When operating parameter is preferable, medium temperature water regulating valve closes
It closes, middle warm water is not passed through single-action condenser, thus single-action condenser does not work, and other component parts of unit constitute one at this time
The unit of platform economic benefits and social benefits operating mode operation.When operating parameter is deteriorated, medium temperature water regulating valve is gradually opened, single-action condenser is adjusted into
Medium temperature water flow, single-action condenser be added unit operation, with high pressure generator, high-temperature heat exchanger, low temperature heat exchanger,
Absorber, evaporator, solution pump, cryogenic fluid pump and force (forcing) pump constitute a single-action operating mode operational process, in former economic benefits and social benefits operating mode
On the basis of operation, the operation of single-action operating mode is increased, the high temperature cryogen that lithium-bromide solution concentration generates in high pressure generator at this time
Steam parallel connection enters low pressure generator and single-action condenser.With the further variation of operating parameter, medium temperature water regulating valve is opened
Degree gradually increases, and the medium temperature water flow into single-action condenser increases, and single-action operating mode runs proportion can be increasing, until
Complete single-action operating mode operation（At this time because operating mode is too poor, lithium-bromide solution cannot be concentrated in low pressure generator, thus high pressure
The high temperature refrigerant vapour that solution concentration generates in generator fully enters the condensation that cools down in single-action condenser）.
The beneficial effects of the invention are as follows：
A kind of solution lithium bromide absorption type refrigeration heat pump of falling tandem type unit of variable effect, under identical operating mode, with dual effect type unit
It compares, equipment cost is low.It economic benefits and social benefits operating mode can run, efficiency of energy utilization is high completely when operating condition is preferable；When operation work
When condition is poor, the ratio of single-action operating mode operation, or even single-action operating mode operation completely can be increased, to by reducing using energy source effect
Rate meets the needs of user is to unit fan-out capability.
Description of the drawings
Fig. 1 is the fundamental diagram of existing single-effect lithiumbromide absorption type refrigeration heat pump unit.
Fig. 2 is the fundamental diagram of existing dual effect type lithium bromide absorption type refrigeration heat pump unit.
Fig. 3 is that a kind of application of the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of the variable effect of this patent is real
Example.
Fig. 4 is that another application of the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of the variable effect of this patent is real
Example.
Reference numeral in figure：
Low pressure generator 1, high pressure generator 2, condenser 3, high-temperature heat exchanger 4, low temperature heat exchanger 5, absorber 6, evaporation
Device 7, solution pump 8, cryogenic fluid pump 9, force (forcing) pump 10, single-action condenser 11, medium temperature water regulating valve 12.
For water at low temperature into A1, water at low temperature goes out A2, and for middle warm water into B1, middle warm water goes out B2, and driving heat source goes out into C1, driving heat source
C2。
Specific implementation method
Embodiment 1：
Referring to Fig. 3, the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to the present invention（Following letter
Claim unit）, the unit by low pressure generator 1, high pressure generator 2, condenser 3, high-temperature heat exchanger 4, low temperature heat exchanger 5,
Absorber 6, evaporator 7, solution pump 8, cryogenic fluid pump 9, force (forcing) pump 10, single-action condenser 11, medium temperature water regulating valve 12 and control system
System（It is not shown in figure）And pipeline, the valve of connecting components are constituted.Water at low temperature flows through evaporator 7, and middle warm water is first connected and flowed through
Absorber 6 and condenser 3 are finally adjusted by medium temperature water regulating valve 12 to adjust the flow for flowing through single-action condenser 11 again（Entirely
Portion is not passed through or is partly or entirely to flow through）, driving heat source flows through high pressure generator 2.When unit operation, taken out by cryogenic fluid pump 9
Go out and absorbed from the water as refrigerant under 7 top spray of evaporator the heat for flowing through water at low temperature in 7 heat-transfer pipe of evaporator, is vaporized into cryogen steaming
Enter in absorber 6 after vapour and is brominated the absorption of lithium concentrated solution, the middle warm water band that the heat of release is flowed through in 6 heat-transfer pipe of absorber
It walks.Concentration is thinning after lithium bromide concentrated solution absorbs refrigerant vapour, is extracted out by solution pump 8 and is sent into low pressure through low temperature heat exchanger 5
Tentatively heating concentrates in generator 1, and the lithium-bromide solution after initial concentration is pressurized 10 extraction of pump and again through high-temperature heat exchanger 4
It is sent into high pressure generator 2 to be heated by driving heat source and concentrate, the lithium-bromide solution after concentration is finally again through 4 He of high-temperature heat exchanger
Low temperature heat exchanger 5 returns to absorber 6.And the high temperature refrigerant vapour that lithium-bromide solution concentration generates in high pressure generator 2 then divides
Two-way parallel connection enters in single-action condenser 11 and low pressure generator 1, into the high temperature refrigerant vapour in single-action condenser 11 in quilt
After middle warm water cooling condensation, evaporator 7 is returned to；And the high temperature refrigerant vapour entered in low pressure generator 1 is heated as heat source
After concentrate solution, cooling condensation itself enters condenser 3 together with the refrigerant vapour that solution concentration generates in low pressure generator 1,
Evaporator 7 is returned to after wherein by the cooling condensation of middle warm water.
In the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect shown in Fig. 3, middle warm water is first to go here and there
Connection flows through absorber 6 and condenser 3, finally adjusts the flow for flowing through single-action condenser 11 by medium temperature water regulating valve 12 again；
It can also be that series connection flows through absorber 6 and condenser 3, be flowed through between the two parts by medium temperature water regulating valve 12 to adjust
The flow of single-action condenser 11；The either condensed device 3 of elder generation's serial flow and absorber 6, finally pass through medium temperature water regulating valve 12 again
To adjust the flow for flowing through single-action condenser 11.
In the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect shown in Fig. 3, occur into low pressure
The water as refrigerant that cooling condensation generates after heating concentrate solution in device 1 is entered in condenser 3, can also be into single-action condensation
Device 11.
In the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect shown in Fig. 3, single-action condenser 11
In water as refrigerant be to be returned directly in evaporator 7, can also be to be introduced into condenser 3, enter back into evaporator 7.
Embodiment 2：
Referring to Fig. 4, the solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to the present invention（Following letter
Claim unit）, with embodiment 1（Fig. 3）Unique difference, be that middle warm water parallel connection flows through absorber 6 and condenser 3, flow through condensation
Device 3 is adjusted by medium temperature water regulating valve 12 come so that its whole is not passed through or is partly or entirely to flow through single-action again all the way
Condenser 11.
Either parallel connection flows through absorber 6 and condenser 3, and list is flowed through by medium temperature water regulating valve 12 to adjust again after converging
Imitate the flow of condenser 11；Either parallel connection flows through absorber 6, condenser 3 and single-action condenser 11, wherein single-action condenser 11
Flow is adjusted by medium temperature water regulating valve 12 all the way.
Claims (9)
1. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect, including：Low pressure generator（1）, it is high
Press generator（2）, condenser（3）, high-temperature heat exchanger（4）, low temperature heat exchanger（5）, absorber（6）, evaporator（7）, it is molten
Liquid pump（8）, cryogenic fluid pump（9）, force (forcing) pump（10）；It is characterized in that：It further includes single-action condenser（11）With medium temperature water regulating valve
（12）；
Water at low temperature flows through evaporator（7）, middle stream of warm water is through absorber（6）, condenser（3）, single-action condenser（11）, driving heat source
Flow through high pressure generator（2）；
Solution pump（8）By absorber（6）In lithium-bromide solution extraction, through low temperature heat exchanger（5）It is sent into low pressure generator（1）
Middle to be concentrated by heating, the lithium-bromide solution after concentration is pressurized pump again（10）Extraction is through high-temperature heat exchanger（4）Into high pressure
Raw device（2）In concentrate again, the solution after concentration is again through high-temperature heat exchanger（4）And low temperature heat exchanger（5）Return to absorber
（6）；
High pressure generator（2）The high temperature refrigerant vapour parallel connection that middle lithium-bromide solution concentration generates enters low pressure generator（1）And list
Imitate condenser（11）, low pressure generator（1）The refrigerant vapour that middle solution concentration generates enters condenser（3）In, after cooling condensation
Return to evaporator（7）.
2. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Middle warm water first connects and flows through absorber（6）And condenser（3）, then pass through medium temperature water regulating valve（12）To adjust stream
Through single-action condenser（11）Flow.
3. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Middle warm water serial flow is through absorber（6）And condenser（3）, pass through medium temperature water regulating valve between the two parts
（12）Single-action condenser is flowed through to adjust（11）Flow.
4. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Middle warm water is the condensed device of first serial flow（3）And absorber（6）, then pass through medium temperature water regulating valve（12）To adjust
Flow through single-action condenser（11）Flow.
5. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Middle warm water is that first parallel connection flows through absorber（6）And condenser（3）, then wherein adjusted again by middle warm water all the way
Valve（12）Single-action condenser is flowed through to adjust（11）Flow.
6. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Middle warm water is that parallel connection flows through absorber（6）And condenser（3）, pass through medium temperature water regulating valve after converging again（12）Come
Adjusting flows through single-action condenser（11）Flow.
7. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Middle warm water is that parallel connection flows through absorber（6）, condenser（3）With single-action condenser（11）, wherein single-action condenser
（11）Pass through medium temperature water regulating valve all the way（12）To adjust flow.
8. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Into low pressure generator（1）The water as refrigerant that cooling condensation generates after middle heating concentrate solution enters condenser（3）,
Or enter single-action condenser（11）.
9. a kind of solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect according to claim 1,
It is characterized in that：Single-action condenser（11）In water as refrigerant be to be returned directly to evaporator（7）In, or it is introduced into condenser（3）,
Enter back into evaporator（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408046.5A CN108645071A (en) | 2018-05-02 | 2018-05-02 | The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408046.5A CN108645071A (en) | 2018-05-02 | 2018-05-02 | The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108645071A true CN108645071A (en) | 2018-10-12 |
Family
ID=63748792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810408046.5A Pending CN108645071A (en) | 2018-05-02 | 2018-05-02 | The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108645071A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN208154867U (en) * | 2018-05-02 | 2018-11-27 | 双良节能系统股份有限公司 | The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect |
-
2018
- 2018-05-02 CN CN201810408046.5A patent/CN108645071A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN208154867U (en) * | 2018-05-02 | 2018-11-27 | 双良节能系统股份有限公司 | The solution lithium bromide absorption type refrigeration heat pump of the falling tandem type unit of variable effect |
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