CN108534393A - The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect - Google Patents
The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect Download PDFInfo
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- CN108534393A CN108534393A CN201810408061.XA CN201810408061A CN108534393A CN 108534393 A CN108534393 A CN 108534393A CN 201810408061 A CN201810408061 A CN 201810408061A CN 108534393 A CN108534393 A CN 108534393A
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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
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The present invention relates to a kind of solution series type lithium bromide absorption type refrigeration heat pump 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）, single-action condenser（10）, medium temperature water regulating valve（11）, 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 series type lithium bromide absorption type refrigeration heat pump units of variable effect.Belong to air-conditioning equipment
Technical field.
Background technology
Lithium bromide absorbing type refrigeration/heat pump unit of existing single driving heat source（Hereinafter referred to as unit）There is 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 and control system（It is not shown in figure）And each portion of connection
Pipeline, the valve of part are constituted.Water at low temperature flows through the cooling of evaporator 7；Middle stream of warm water heats up through absorber 6 and condenser 3；Driving heat
Source stream concentrates lithium-bromide solution through high pressure generator 2, release heat.When unit operation, extracted out by cryogenic fluid pump 9 and from evaporation
Water as refrigerant under 7 top spray of device absorbs the heat for flowing through water at low temperature in 7 heat-transfer pipe of evaporator, enters suction after being vaporized into refrigerant vapour
It receives and is brominated the absorption of lithium concentrated solution in device 6, the heat of release is walked by the middle warm water absorption band flowed through in 6 heat-transfer pipe of absorber, and
Concentration is thinning after lithium bromide concentrated solution absorbs refrigerant vapour, is extracted out by solution pump 8 and through low temperature heat exchanger 5, high temperature heat exchange
It is sent into high pressure generator 2 after the heat exchange heating of device 4 and is tentatively heated concentration by driving heat source, the lithium-bromide solution after initial concentration is again
Enter low pressure generator 1 after the heat exchange cooling of high-temperature heat exchanger 4, lithium-bromide solution concentrates in wherein by high pressure generator 2
The high temperature refrigerant vapour of generation heats concentration again, and the lithium-bromide solution after concentration most returns to absorption through low temperature heat exchanger 5 afterwards
In device 6, and the high temperature refrigerant vapour that solution concentration generates in high pressure generator 2 is dense as heat source heating in low pressure generator 1
After contracting lithium-bromide solution, cooling itself is condensed into water as refrigerant, together with the refrigerant vapour that solution concentrates out in low pressure generator 1
Into condenser 3, returned in evaporator 7 after the cooling condensation of middle warm water.
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, unit
Dual effect type structure can be 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 ratio
When nominal condition parameter relatively low or that be water at low temperature and middle warm water is poor, unit can only then select single-effect type structure, at this time
The efficiency of energy utilization of driving heat source is relatively low, and only 0.8 or so.When the structural shape of unit by the manufacturing once it is determined that and come out
After, during its entire service life, efficiency of energy utilization is also 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 series type lithium bromide absorption type refrigeration heat pump unit of variable effect, when
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 work of economic benefits and social benefits after operating parameter is deteriorated
Condition 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 series type lithium bromide absorption type refrigeration heat pump machine of variable effect
Group, including：Low pressure generator, high pressure generator, condenser, high-temperature heat exchanger, low temperature heat exchanger, absorber, evaporator,
Solution pump, cryogenic fluid pump, single-action condenser, medium temperature water regulating valve.Water at low temperature flows through evaporator, and middle stream of warm water is through absorber, condensation
Device, single-action condenser, driving heat source flow through high pressure generator.When operating parameter is preferable, medium temperature water regulating valve is closed, middle warm water
It is not passed through single-action condenser, thus single-action condenser does not work, other component parts of unit constitute an economic benefits and social benefits work at this time
The unit of condition operation.When operating parameter is deteriorated, medium temperature water regulating valve is gradually opened, the middle warm water of single-action condenser is adjusted into
Flow, single-action condenser be added unit operation, with high pressure generator, high-temperature heat exchanger, low temperature heat exchanger, absorber,
Evaporator, solution pump and cryogenic fluid pump constitute a single-action operating mode operational process, on the basis of former economic benefits and social benefits operating mode is run, increase
Single-action operating mode has been added to run, the high temperature refrigerant vapour parallel connection that lithium-bromide solution concentration generates in high pressure generator at this time enters low pressure
Generator and single-action condenser.With the further variation of operating parameter, the aperture of medium temperature water regulating valve gradually increases, into list
The medium temperature water flow for imitating condenser increases, and single-action operating mode runs proportion can be increasing, until complete single-action operating mode is run
（At this time because operating mode is too poor, lithium-bromide solution cannot be concentrated in low pressure generator, thus solution concentrates in high pressure generator
The high temperature refrigerant vapour of generation fully enters the condensation that cools down in single-action condenser）.
The beneficial effects of the invention are as follows：
A kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect, under identical operating mode, with dual effect type unit phase
Than 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；Work as operating condition
When poor, the ratio of single-action operating mode operation, or even single-action operating mode operation completely can be increased, to by reducing efficiency of energy utilization
To meet 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 a kind of application example of the solution series type lithium bromide absorption type refrigeration heat pump unit of the variable effect of this patent.
Fig. 4 is that another application of the solution series type lithium bromide absorption type refrigeration heat pump 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, single-action condenser 10, medium temperature water regulating valve 11.
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 series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to the present invention（Hereinafter referred to as
Unit）, the unit is by low pressure generator 1, high pressure generator 2, condenser 3, high-temperature heat exchanger 4, low temperature heat exchanger 5, suction
Receive device 6, evaporator 7, solution pump 8, cryogenic fluid pump 9, single-action condenser 10, medium temperature water regulating valve 11 and control system（Do not show in figure
Go out）And pipeline, the valve of connecting components are constituted.Water at low temperature flows through evaporator 7, and middle warm water, which is first connected, flows through absorber 6 and cold
Condenser 3 is finally adjusted by medium temperature water regulating valve 11 to adjust the flow for flowing through single-action condenser 10 again（All be not passed through or
Person is partly or entirely to flow through）, driving heat source flows through high pressure generator 2.When unit operation, extracted out by cryogenic fluid pump 9 and from evaporation
Water as refrigerant under 7 top spray of device absorbs the heat for flowing through water at low temperature in 7 heat-transfer pipe of evaporator, enters suction after being vaporized into refrigerant vapour
It receives and is brominated the absorption of lithium concentrated solution in device 6, the heat of release is taken away by the middle warm water flowed through in 6 heat-transfer pipe of absorber, lithium bromide
Concentration is thinning after concentrated solution absorbs refrigerant vapour, is extracted out and sent through low temperature heat exchanger 5 and high-temperature heat exchanger 4 by solution pump 8
Enter to be heated by driving heat source in high pressure generator 2 and concentrate, it is cold that the high temperature refrigerant vapour for concentrating out divides two-way parallel connection to enter single-action
In condenser 10 and low pressure generator 1, and the lithium-bromide solution after concentrating then enters low pressure generator 1 through high-temperature heat exchanger 4,
Concentration is wherein heated by the high temperature refrigerant vapour that solution concentration generates in high pressure generator 2 again, the solution after concentration is last
Absorber 6 is returned to through low temperature heat exchanger 5 again, and the high temperature refrigerant vapour that solution concentration generates in high pressure generator 2 is in low pressure
After being used as heat source to heat concentrate solution in generator 1, cooling condensation itself concentrates the cold of generation with solution in low pressure generator 1
Agent steam enters condenser 3 together, and evaporator 7 is returned to after the cooling condensation of middle warm water.And enter the height in single-action condenser 10
Warm refrigerant vapour is then directly cooled down by middle warm water and condenses, also returns to evaporator 7.
In the solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect shown in Fig. 3, middle warm water is first to connect
Absorber 6 and condenser 3 are flowed through, the flow for flowing through single-action condenser 10 is finally adjusted by medium temperature water regulating valve 11 again；Its
It can also be that series connection flows through absorber 6 and condenser 3, list flowed through to adjust by medium temperature water regulating valve 11 between the two parts
Imitate the flow of condenser 10；The condensed device 3 of either first serial flow and absorber 6, finally again by medium temperature water regulating valve 11 come
Adjust the flow for flowing through single-action condenser 10；
In the solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect shown in Fig. 3, add into low pressure generator 1
The water as refrigerant that cooling condensation generates after thermal concentration solution is entered in condenser 3, can also be into single-action condenser 10.
In the solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect shown in Fig. 3, in single-action condenser 10
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 series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to the present invention（Hereinafter referred to as
Unit）, with embodiment 1（Fig. 3）Unique difference, be that middle warm water parallel connection flows through absorber 6 and condenser 3, flow through condenser 3
All the way again by medium temperature water regulating valve 11 adjust come so that its whole be not passed through or be partly or entirely flow through single-action condensation
Device 10；
Either parallel connection flows through absorber 6 and condenser 3, and by medium temperature water regulating valve 11, to adjust, to flow through single-action cold again after converging
The flow of condenser 10；Either parallel connection flows through absorber 6, condenser 3 and single-action condenser 10, wherein 10 1 tunnel of single-action condenser
Flow is adjusted by medium temperature water regulating valve 11.
Claims (9)
1. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect, 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）；It is characterized in that：It further includes single-action condenser（10）With medium temperature water regulating valve（11）；
Water at low temperature flows through evaporator（7）, middle stream of warm water is through absorber（6）, condenser（3）, single-action condenser（10）, 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）And high-temperature heat exchanger（4）
It is sent into high pressure generator（2）Middle to be concentrated by heating, the lithium-bromide solution after concentration is again through high-temperature heat exchanger（4）It is sent out into low pressure
Raw device（1）In concentrate again, the solution after concentration is again through 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（10）, 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 series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：Middle warm water serial flow is through absorber（6）And condenser（3）, then pass through medium temperature water regulating valve（11）List is flowed through to adjust
Imitate condenser（10）Flow.
3. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：Middle warm water serial flow is through absorber（6）And condenser（3）, pass through medium temperature water regulating valve between the two parts（11）
Single-action condenser is flowed through to adjust（10）Flow.
4. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：The condensed device of middle warm water elder generation serial flow（3）And absorber（6）, then pass through medium temperature water regulating valve（11）It is flowed through to adjust
Single-action condenser（10）Flow.
5. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：The parallel connection of middle warm water elder generation flows through absorber（6）And condenser（3）, then wherein pass through medium temperature water regulating valve again all the way
（11）Single-action condenser is flowed through to adjust（10）Flow.
6. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：Middle warm water parallel connection flows through absorber（6）And condenser（3）, pass through medium temperature water regulating valve after converging again（11）To adjust
Flow through single-action condenser（10）Flow.
7. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：Middle warm water is that parallel connection flows through absorber（6）, condenser（3）With single-action condenser（10）, wherein single-action condenser（10）
Pass through medium temperature water regulating valve all the way（11）To adjust flow.
8. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：Into low pressure generator（1）The water as refrigerant that cooling condensation generates after middle heating concentrate solution enters condenser（3）, or
Person enters single-action condenser（10）.
9. a kind of solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect according to claim 1, special
Sign is：Single-action condenser（10）In water as refrigerant be to be returned directly to evaporator（7）In, or it is introduced into condenser（3）, then
Into evaporator（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408061.XA CN108534393A (en) | 2018-05-02 | 2018-05-02 | The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408061.XA CN108534393A (en) | 2018-05-02 | 2018-05-02 | The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect |
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| Publication Number | Publication Date |
|---|---|
| CN108534393A true CN108534393A (en) | 2018-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810408061.XA Pending CN108534393A (en) | 2018-05-02 | 2018-05-02 | The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect |
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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 |
| CN208154873U (en) * | 2018-05-02 | 2018-11-27 | 双良节能系统股份有限公司 | The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect |
-
2018
- 2018-05-02 CN CN201810408061.XA patent/CN108534393A/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 |
| CN208154873U (en) * | 2018-05-02 | 2018-11-27 | 双良节能系统股份有限公司 | The solution series type lithium bromide absorption type refrigeration heat pump unit of variable effect |
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