CN106679224B - Superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit - Google Patents
Superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit Download PDFInfo
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- CN106679224B CN106679224B CN201611017417.4A CN201611017417A CN106679224B CN 106679224 B CN106679224 B CN 106679224B CN 201611017417 A CN201611017417 A CN 201611017417A CN 106679224 B CN106679224 B CN 106679224B
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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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- 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 present invention relates to a kind of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump units, belong to air conditioner technical field.It include: low pressure generator (1), high pressure generator (2), condenser (3), high-temperature heat exchanger (4), middle temperature heat exchanger (5), low temperature heat exchanger (6), the first absorber (7), the first evaporator (8), the second absorber (9), the second evaporator (10), lithium-bromide solution series connection flows through high pressure generator (2), low pressure generator (1), the first absorber (7) and the second absorber (9)；High temperature heat source flows through high pressure generator (2)；Water at low temperature flows through the first evaporator (8)；Middle tri- tunnel warm water Shi Fen, series connection flows through the second evaporator (10) and the first absorber (7) all the way, and another two-way flows separately through the second absorber (9) and condenser (3).The unit can reduce the refrigerating capacity of the second evaporator in superposition type unit, to improve the COP of entire unit.
Description
Technical field
The present invention relates to a kind of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump units.Belong to air-conditioning equipment
Technical field.
Background technique
Existing superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit (hereinafter referred to as superposition type double-effect unit
Group or unit) as shown in Figure 1, being handed over by low pressure generator 1, high pressure generator 2, condenser 3, high-temperature heat exchanger 4, middle warm
Parallel operation 5, low temperature heat exchanger 6, the first absorber 7, the first evaporator 8, the second absorber 9, the second evaporator 10, the first cryogen
The 11, first solution pump 12 of pump, the second solution pump 13, cryogen communicating pipe 14, recirculating water pump 15 and control system (are not shown in figure
Out) and the pipeline of connecting components, valve are constituted.Water at low temperature (cold water of refrigeration unit or the remaining hot water of heat pump unit, similarly hereinafter)
Flow through the cooling of the first evaporator 8；Middle warm water (cooling water of refrigeration unit or the hot water of heat pump unit, similarly hereinafter) flows through the second absorption
Device 9 and condenser 3 heat up；High temperature driven heat source flows through high pressure generator 2, and release thermal discharge drives entire unit operation；In addition
There are also recirculated waters all the way to be driven by recirculating water pump 15, the closed cycle between the first absorber 7 and the second evaporator 10.Unit
When operation, the water as refrigerant absorption under being sprayed at the top of the first evaporator 8 by the extraction of the first cryogenic fluid pump 11 flows through the first evaporator 8 and conducts heat
The heat of water at low temperature in pipe enters the first absorber 7 after vaporization, absorbed by lithium bromide concentrated solution therein, and discharge heat and add
Hot-fluid is through the recirculated water in 7 heat-transfer pipe of the first absorber；Recirculated water after temperature increases is sent into the second steaming by recirculating water pump 15
In the heat-transfer pipe for sending out device 10, cooled down by exchanging heat after the extraction of the first cryogenic fluid pump 11 from the water as refrigerant under the spray of top, after temperature reduces
The heat that absorbent solution discharges in the first absorber 7 is come back to again, and after the water as refrigerant in the second evaporator 10 absorbs heat
It vaporizes and enters the second absorber 9；Concentration is thinning after lithium bromide concentrated solution absorbs refrigerant vapour in first absorber 7, by first
The extraction of solution pump 12 simultaneously enters in the second absorber 9 after the heat exchange heating of low temperature heat exchanger 6, absorbs the second evaporator 10 and generates
Refrigerant vapour after concentration reduce (while discharging heat and flowing through middle warm water in 9 heat-transfer pipe of the second absorber), quilt again
Second solution pump 13 extraction and in temperature heat exchanger 5 and high-temperature heat exchanger 4 heat exchange heating after enter high pressure generator 2 in by
High temperature heat source heating concentration.Lithium-bromide solution after concentration enters low pressure generator 1 after the heat exchange cooling of high-temperature heat exchanger 4
In, by high pressure generator 2 solution concentration generate high temperature refrigerant vapour heat concentration again, finally pass through again in temperature heat exchanger
5 and the heat exchange cooling of low temperature heat exchanger 6 after return in the first absorber 7 and absorb refrigerant vapour；And solution is dense in high pressure generator 2
The refrigerant vapour that contracting generates condenses after discharging heat in low pressure generator 1, and generation is concentrated again with solution in low pressure generator 1
Refrigerant vapour enter in condenser 3 by middle warm water cool down condense, the water as refrigerant being condensed into back to the second evaporator 10 simultaneously
By returning to cryogen communicating pipe 14 in first evaporator 8.
In superposition type economic benefits and social benefits unit, the heat extracted from the water at low temperature for flowing through the first evaporator 8 is advanced becomes a mandarin
In closed cycle water through the first absorber 7, then again by the heat extraction in the closed cycle water in the second evaporator 10
It just can enter after out in the middle warm water for flowing through the second absorber 9.That is, superposition type economic benefits and social benefits unit is in order to will be in water at low temperature
Heat extraction come out enter in warm water, in addition to needing to consume high temperature driven thermal energy, utilizing suction-type lithium bromide dual-effect refrigeration
Principle freezes (extracting heat therein, similarly hereinafter) outside to the water at low temperature for flowing through the first evaporator 8, and it is high also to also need consumption
Temperature driving thermal energy freezes to the closed cycle water for flowing through the second evaporator 10 using suction-type lithium bromide dual-effect refrigeration principle.It closes
The heat (also referred to as refrigerating capacity) that formula recirculated water discharges in the second evaporator 10 is exactly the heat that it is absorbed in the first absorber 7
Amount, for lithium bromide absorption-type machine unit, the heat exchange amount in absorber is about 1.2 times of corresponding evaporator capacity.Cause
This, superposition type economic benefits and social benefits unit in order to the heat extraction in water at low temperature is come out enter in warm water, need to consume high temperature driven heat
Energy simultaneously freezes to water at low temperature and recirculated water using suction-type lithium bromide dual-effect refrigeration principle, and overall refrigerating effect is approximately low temperature
2.2 times of hydro-thermal amount, it is assumed that the COP of suction-type lithium bromide dual-effect refrigeration unit is 1.4, then the COP of superposition type economic benefits and social benefits unit is about
It is 1.4 ÷ 2.2=0.636.If improving the COP of superposition type economic benefits and social benefits unit, a kind of approach is to promote dual-effect refrigeration as far as possible to follow
The efficiency (i.e. COP) of ring, such as increase heat exchange area to reduce the heat exchange difference of heat exchanger, it is exactly to reduce there are also a kind of approach
The refrigeration demand of second evaporator 10.
Summary of the invention
The object of the invention is to pass through the refrigeration demand for reducing by the second evaporator, Lai Tigao superposition type economic benefits and social benefits unit
COP。
The object of the present invention is achieved like this: a kind of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump machine
Group, comprising: low pressure generator, high pressure generator, condenser, high-temperature heat exchanger, middle temperature heat exchanger, low temperature heat exchanger,
First absorber, the first evaporator, the second absorber, the second evaporator, the first cryogenic fluid pump, the first solution pump, the second solution pump
With cryogen communicating pipe, the first evaporator and the first absorber are in a cavity, and are equipped with the first solution pump, the second evaporator
It is in another cavity with the second absorber, and is equipped with the second solution pump；The water as refrigerant of first evaporator and the second evaporator
It is connected to by cryogen communicating pipe.Second solution pump extracts the weak solution in the second absorber out, temperature heat exchanger and Gao Wenre in
Exchanger is sent to high pressure generator, and the solution after concentration enters back into low pressure generator through high-temperature heat exchanger, finally again through medium temperature
Heat exchanger and low temperature heat exchanger enter the first absorber, and the first solution pump again extracts the weak solution of the first absorber out, warp
Low temperature heat exchanger returns to the second absorber.The refrigerant vapour that solution concentration generates in high pressure generator enters low pressure generator,
Enter condenser after discharging heat condensation, the refrigerant vapour that solution concentration generates in low pressure generator also enters condenser, two-way
Refrigerant vapour is returned after being condensed within the condenser in the second evaporator and the first evaporator.High temperature driven heat source flows through high pressure
Generator, release thermal discharge drive entire unit operation；Water at low temperature flows through the cooling of the first evaporator；Middle tri- tunnel warm water Shi Fen, one
Road series connection flows through the second evaporator and the first absorber first cools down heats up afterwards, and in addition two-way flows separately through the second absorber and condensation
Device heating；It is also possible to a point two-way, and series connection flows through the second evaporator and the first absorber, another way random order series connection all the way
Flow through the second absorber and condenser；It can also be a point two-way, and series connection flows through the second evaporator and the first absorber all the way, separately
Any one in the second absorber and condenser is then flowed through all the way, and two path water passes through the second absorber and condenser after converging
In another；Either divide two-way, after first series connection flows through the second evaporator and the first absorber all the way, passes through the second absorption
Any one in device and condenser, another way then flows through another in the second absorber and condenser.
The beneficial effects of the present invention are:
Compared with existing superposition type economic benefits and social benefits unit, present invention eliminates closed cycle water and water pump, it is changed to therefrom warm water
In separate to come and substitute the closed cycle water, warm water enters back into the first absorber after first cooling down in the second evaporator in the road
Middle heating.For the superposition type economic benefits and social benefits unit of some operating conditions, medium temperature water, temperature can all the way for this after the heating of the first absorber
With the temperature higher than middle warm water into unit, that is to say, that this heat that medium temperature water absorbs in the first absorber all the way can be greater than
Its heat discharged in the second evaporator, the refrigerating capacity of the second evaporator can be less than the first absorber in other words
Heat exchange amount needs to consume high temperature heat source, utilizes suction-type lithium bromide dual-effect refrigeration to reduce entire superposition type economic benefits and social benefits unit
Principle is come the refrigerating capacity freezed, so as to improve the COP of superposition type economic benefits and social benefits unit.
By taking 12/7 DEG C of water at low temperature out temperature, 40/45 DEG C of medium temperature water entrance temperature as an example, due to lithium bromide weak solution
The reason of concentration and high pressure generator pressure, 40 DEG C of the middle warm water are not suitable for being directly entered the first absorber 7.But it is special using this
After 40 DEG C of a part of middle warm water is cooled to 34 DEG C or so in the second evaporator 10 by the superposition type economic benefits and social benefits unit of benefit, the part
Middle warm water can enter in the first absorber 7, and its temperature can be promoted to 42 DEG C or so in the first absorber 7.The portion
Temperature rise of the warm water in the first absorber 7 is 8 DEG C in point, and its temperature drop in the second evaporator 10 is 6 DEG C, i.e., the second evaporation
The refrigerating capacity of device 10 about only has the 75% of 7 heat exchange amount of the first absorber, and the heat exchange amount by the first absorber 7 is the first evaporator 8 system
1.2 times of considerations of cooling capacity, then the refrigerating capacity of the second evaporator 10 about only has 0.9 times of 8 refrigerating capacity of the first evaporator.That is
After the superposition type economic benefits and social benefits unit of this patent, needs to consume high temperature driven thermal energy, utilizes suction-type lithium bromide dual-effect refrigeration original
The overall refrigerating effect for managing to freeze about only has 1.9 times of 8 water at low temperature refrigerating capacity of the first evaporator, it will again be assumed that suction-type lithium bromide economic benefits and social benefits
The COP of refrigeration unit is 1.4, then the COP of this patent superposition type economic benefits and social benefits unit can reach about 1.4 ÷ 1.9=0.737, and existing multiple
The 0.636 of stacked unit is compared, and improves about 15.9%.
Detailed description of the invention
Fig. 1 is the working principle diagram of previous superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit.
Fig. 2 is a kind of application example of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit of the present invention.
Fig. 3 is that another application of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit of the present invention is real
Example.
Appended drawing reference in figure:
Low pressure generator 1, high pressure generator 2, condenser 3, high-temperature heat exchanger 4, middle temperature heat exchanger 5, Low Temperature Thermal are handed over
Parallel operation 6, the first absorber 7, the first evaporator 8, the second absorber 9, the second evaporator 10, the first cryogenic fluid pump 11, the first solution
Pump the 12, second solution pump 13, cryogen communicating pipe 14, recirculating water pump 15, the second cryogenic fluid pump 16.
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 heat source goes out C2 into C1, heat source.
Fig. 2 is superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit according to the present invention (following letter
Claim superposition type economic benefits and social benefits unit or unit) a kind of exemplary application map, the unit is by low pressure generator 1, high pressure generator 2, condensation
Device 3, high-temperature heat exchanger 4, middle temperature heat exchanger 5, low temperature heat exchanger 6, the first absorber 7, the first evaporator 8, second are inhaled
Receive device 9, the second evaporator 10, the first cryogenic fluid pump 11, the first solution pump 12, the second solution pump 13, cryogen communicating pipe 14 and control
The pipeline of system processed and connecting components, valve etc. are constituted.First evaporator 8 and the first absorber 7 are in a cavity, and second
Evaporator 10 and the second absorber 9 are in another cavity, and the water as refrigerant of the first evaporator 8 and the second evaporator 10 is by cryogen
Communicating pipe 14 is connected to.Water at low temperature flows through the cooling of the first evaporator 8；Three tunnel of medium temperature moisture, series connection flows through the second evaporator 10 all the way
First cool down with the first absorber 7(and heat up afterwards), another two-way flows separately through the second absorber 9 and condenser 3 heats up；High temperature driven heat
Source stream discharges thermal discharge and drives entire unit operation through high pressure generator 2.When unit is run, after the extraction of the first cryogenic fluid pump 11
Water as refrigerant under being sprayed at the top of the first evaporator 8 and the second evaporator 10, respectively with flow through it is low in 8 heat-transfer pipe of the first evaporator
Middle warm water heat exchange in 10 heat-transfer pipe of warm water and the second evaporator, its temperature is reduced, and is divided after itself being then vaporized into refrigerant vapour
Not Jin Ru the first absorber 7 and the second absorber 9, absorbed by lithium-bromide solution therein and discharged heat and flow through its heat transfer
The lithium-bromide solution of middle warm water in pipe, the first absorber 7 and the second absorber 9 is connected, and lithium bromide concentrated solution is first inhaled first
Receive device 7 in absorb refrigerant vapour and concentration it is thinning after, extracted out by the first solution pump 12, through low temperature heat exchanger 6 heat exchange heating after
Into in the second absorber 9, concentration is further thinning after absorbing refrigerant vapour again, is finally extracted out again by the second solution pump 13,
Enter in high pressure generator 2 after temperature heat exchanger 5, the heat exchange heating of high-temperature heat exchanger 4 in.Lithium bromide weak solution is in high pressure
It is heated and is concentrated by high temperature heat source in raw device 2, the lithium-bromide solution after concentration enters low pressure after the heat exchange cooling of high-temperature heat exchanger 4
In generator 1, concentration is heated by the high temperature refrigerant vapour that solution concentration generates in high pressure generator 2 again, the bromination after concentration
Lithium solution comes back to absorption cryogen steaming in the first absorber 7 after temperature heat exchanger 5 and the heat exchange cooling of low temperature heat exchanger 6 in
Vapour；And the refrigerant vapour that solution concentration generates in high pressure generator 2 condenses after discharging heat in low pressure generator 1, with low pressure
The refrigerant vapour that generation is concentrated in solution again in generator 1, which enters to be cooled down in condenser 3 by middle warm water, to be condensed, and what is be condensed into is cold
Agent water is back to the second evaporator 10 and by returning to cryogen communicating pipe 14 in first evaporator 8.
In superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit shown in Fig. 2, middle tri- tunnel warm water Shi Fen,
Series connection flows through the second evaporator 10 and the first absorber 7 all the way, and another two-way flows separately through the second absorber 9 and condenser 3；Its
It can be a point two-way, series connection flows through the second evaporator 10 and the first absorber 7 all the way, and another way random order series connection flows through second
Absorber 9 and condenser 3；It can also be a point two-way, and series connection flows through the second evaporator 10 and the first absorber 7 all the way, another
Road then flows through any one in the second absorber 9 and condenser 3, and two path water passes through the second absorber 9 and condensation after converging
Another in device 3；Either divide two-way, after first series connection flows through the second evaporator 10 and the first absorber 7 all the way, passes through the
Any one in two absorbers 9 and condenser 3, another way then flows through another in the second absorber 9 and condenser 3.
Fig. 3 is superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit according to the present invention (following letter
Claim superposition type economic benefits and social benefits unit or unit) another exemplary application map, the unit is by low pressure generator 1, high pressure generator 2, cold
Condenser 3, high-temperature heat exchanger 4, middle temperature heat exchanger 5, low temperature heat exchanger 6, the first absorber 7, the first evaporator 8, second
Absorber 9, the second evaporator 10, the first cryogenic fluid pump 11, the first solution pump 12, the second solution pump 13, cryogen communicating pipe 14, second
The pipeline of cryogenic fluid pump 16 and control system and connecting components, valve etc. are constituted.First evaporator 8 and the first absorber 7 are in
In one cavity, the second evaporator 10 and the second absorber 9 are in another cavity, the first evaporator 8 and the second evaporator
10 water as refrigerant is connected to by cryogen communicating pipe 14.Water at low temperature flows through the cooling of the first evaporator 8；Three tunnel of medium temperature moisture, connects all the way
Flow through the second evaporator 10 and the first absorber 7(first cool down heat up afterwards), another two-way flows separately through the second absorber 9 and condenser
3 heatings；High temperature driven heat source flows through high pressure generator 2, and release thermal discharge drives entire unit operation.When unit is run, by the
Lower water as refrigerant is sprayed after the extraction of one cryogenic fluid pump 11 at the top of the first evaporator 8 and is evaporated after the extraction of the second cryogenic fluid pump 16 from second
Water as refrigerant under spraying at the top of device 10 conducts heat with the water at low temperature flowed through in 8 heat-transfer pipe of the first evaporator and the second evaporator 10 respectively
Middle warm water heat exchange in pipe, its temperature is reduced, itself is then vaporized into refrigerant vapour, respectively enters the first absorber 7 and second
Absorber 9, is absorbed by lithium-bromide solution therein and is discharged heat and flow through middle warm water in its heat-transfer pipe, the first absorber
7 and second absorber 9 lithium-bromide solution series connection, it is simultaneously dense that lithium bromide concentrated solution first absorbs refrigerant vapour in the first absorber 7
Spend it is thinning after, extracted out by the first solution pump 12, through low temperature heat exchanger 6 heat exchange heating after enter the second absorber 9 in, inhale again
Concentration is further thinning after receiving refrigerant vapour, is finally extracted out again by the second solution pump 13, and temperature heat exchanger 5, high warm are handed in
Enter in high pressure generator 2 after the heat exchange heating of parallel operation 4.Lithium bromide weak solution is heated in high pressure generator 2 by high temperature heat source dense
Contracting, the lithium-bromide solution after concentration enters in low pressure generator 1 after the heat exchange cooling of high-temperature heat exchanger 4, by high pressure generator 2
The high temperature refrigerant vapour that middle solution concentration generates heats concentration again, 5 He of temperature heat exchanger in the lithium-bromide solution warp after concentration
It is come back in the first absorber 7 after the heat exchange cooling of low temperature heat exchanger 6 and absorbs refrigerant vapour；And solution in high pressure generator 2
The refrigerant vapour that concentration generates condenses after discharging heat in low pressure generator 1, and production is concentrated again with solution in low pressure generator 1
Raw refrigerant vapour, which enters to be cooled down in condenser 3 by middle warm water, to be condensed, and the water as refrigerant being condensed into returns to the second evaporator 10
And by returning to cryogen communicating pipe 14 in first evaporator 8.
In superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit shown in Fig. 3, middle tri- tunnel warm water Shi Fen,
Series connection flows through the second evaporator 10 and the first absorber 7 all the way, and another two-way flows separately through the second absorber 9 and condenser 3；Its
It can be a point two-way, series connection flows through the second evaporator 10 and the first absorber 7 all the way, and another way random order series connection flows through second
Absorber 9 and condenser 3；It can also be a point two-way, and series connection flows through the second evaporator 10 and the first absorber 7 all the way, another
Road then flows through any one in the second absorber 9 and condenser 3, and two path water passes through the second absorber 9 and condensation after converging
Another in device 3；Either divide two-way, after first series connection flows through the second evaporator 10 and the first absorber 7 all the way, passes through the
Any one in two absorbers 9 and condenser 3, another way then flows through another in the second absorber 9 and condenser 3.
Claims (3)
1. a kind of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit, comprising: low pressure generator (1), high pressure
Generator (2), condenser (3), high-temperature heat exchanger (4), middle temperature heat exchanger (5), low temperature heat exchanger (6), first absorb
Device (7), the first evaporator (8), the second absorber (9), the second evaporator (10), the first cryogenic fluid pump (11), the first solution pump
(12), the second solution pump (13) and cryogen communicating pipe (14), the first evaporator (8) and the first absorber (7) are in a cavity
It is interior, and the first solution pump (12) are equipped with, the second evaporator (10) and the second absorber (9) are in another cavity, and are equipped with
Second solution pump (13)；First evaporator (8) is connected to the water as refrigerant of the second evaporator (10) by cryogen communicating pipe (14)；Second
Solution pump (13) extracts the weak solution in the second absorber (9) out, and temperature heat exchanger (5), high-temperature heat exchanger (4) are sent in
High pressure generator (2), solution enters low pressure generator (1) through high-temperature heat exchanger (4) again after concentration, the solution after being concentrated again
Temperature heat exchanger (5) and low temperature heat exchanger (6) enter the first absorber (7) in passing through again, and the first solution pump (12) is again by first
The weak solution of absorber (7) is extracted out, returns to the second absorber (9) through low temperature heat exchanger (6)；Solution in high pressure generator (2)
The refrigerant vapour generated is concentrated and enters condenser (3) after low pressure generator (1) exothermic condensation, it is molten in low pressure generator (1)
The refrigerant vapour that liquid concentration generates also enters condenser (3), and the second evaporator (10) and the first evaporator (8) are returned after condensation
In；High temperature heat source flows through high pressure generator (2)；Water at low temperature flows through the first evaporator (8)；It is characterized by: middle warm water is points three
Road, series connection flows through the second evaporator (10) and the first absorber (7) all the way, and another two-way flows separately through the second absorber (9) and cold
Condenser (3)；Or: middle warm water is a point two-way, and series connection flows through the second evaporator (10) and the first absorber (7), another way all the way
Series connection flows through the second absorber (9) and condenser (3)；Or: middle warm water is a point two-way, and series connection flows through the second evaporator all the way
(10) it is then flowed through the second absorber (9) with the first absorber (7), another way, two path water passes through condenser (3) after converging；Or
Person: middle warm water is a point two-way, after first series connection flows through the second evaporator (10) and the first absorber (7) all the way, passes through condenser
(3), another way then flows through the second absorber (9).
2. a kind of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit according to claim 1, special
Sign is: the water as refrigerant under being sprayed at the top of the first evaporator (8) and the second evaporator (10) after the first cryogenic fluid pump (11) extraction,
It exchanges heat respectively with the middle warm water in the water at low temperature and the second evaporator (10) heat-transfer pipe that flow through in the first evaporator (8) heat-transfer pipe.
3. a kind of superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit according to claim 1, special
Sign is: by the water as refrigerant after the first cryogenic fluid pump (11) extraction at the top of the first evaporator (8) under spray and by the second cryogenic fluid pump
(16) water as refrigerant after extracting out at the top of the second evaporator (10) under spray, respectively with flow through in the first evaporator (8) heat-transfer pipe
Middle warm water heat exchange in water at low temperature and the second evaporator (10) heat-transfer pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611017417.4A CN106679224B (en) | 2016-11-19 | 2016-11-19 | Superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit |
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|---|---|---|---|
| CN201611017417.4A CN106679224B (en) | 2016-11-19 | 2016-11-19 | Superposition type solution series double-effect lithium bromide absorption type refrigerating heat pump unit |
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| CN106679224B true CN106679224B (en) | 2019-07-19 |
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