CN108224844A - The big temperature difference heat-exchange unit of absorption-compression type - Google Patents
The big temperature difference heat-exchange unit of absorption-compression type Download PDFInfo
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- CN108224844A CN108224844A CN201810192947.5A CN201810192947A CN108224844A CN 108224844 A CN108224844 A CN 108224844A CN 201810192947 A CN201810192947 A CN 201810192947A CN 108224844 A CN108224844 A CN 108224844A
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- Prior art keywords
- absorption
- heat
- heat pump
- evaporator
- compression
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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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/02—Compression-sorption machines, plants, or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The big temperature difference heat-exchange unit of absorption-compression type provided by the invention belongs to large temperature difference technology field.The big temperature difference heat-exchange unit of absorption-compression type, is made of components such as absorption heat pump, compression heat pump, heat exchanger, water circulating pump, part flow arrangement and converging devices.High temperature heat source sequentially enters the generator of absorption heat pump and external heat exchanger cooling, enters back into the second condenser heating of compression heat pump, then sequentially enters the second evaporator cooling of the first evaporator and compression heat pump of absorption heat pump；A part of heated medium sequentially enters the absorber of absorption heat pump and the heating of the first condenser, and another part enters heat exchanger heating.The present invention can improve the evaporating temperature of absorption heat pump evaporator, and then reduce the concentration of unit lithium-bromide solution, the final generation temperature for reducing generator realizes that high temperature heat source has the temperature drop of bigger in generator, the outlet temperature of high temperature heat source is made to be significantly less than the inlet temperature of heated medium.
Description
Technical field：
The invention belongs to large temperature difference technology fields.
Background technology：
Under the operating mode of existing conventional heat exchanger counter-flow arrangement, the outlet temperature of high temperature heat source is higher than heated medium import temperature
Degree, diabatic process can just be realized.Existing absorption heat pump technology can realize that high temperature heat source enters generator cooling, as drive
Dynamic heat source driving heat pump unit can be realized absorbs the relatively low waste heat of a part of temperature in evaporator, the series connection of high temperature heat source pipeline
Generator, heat pump external heat exchanger and evaporator into absorption heat pump, it is low can to realize that high temperature heat source goes out evaporator temperature
In the inlet temperature of heated medium, but it is limited by the limitation of absorption installation SOLUTION PROPERTIES and unit performance, absorption type heat
It is lower to pump evaporating temperature, generation temperature is higher, is unfavorable for high temperature heat source and cools down in generator, occurs to steam while temperature is lower
It is higher to send out temperature, is unfavorable for high temperature heat source and cools down in evaporator.Existing compression heat pump technology, by the effect of compressor,
It can realize and absorb heat out of evaporator, heat release in condenser, the evaporating temperature in evaporator is low, is suitble to absorb relatively low remaining of temperature
Heat.
Invention content：
The main object of the present invention is to provide the big temperature difference heat-exchange unit of absorption-compression type, and specific invention content subitem illustrates such as
Under：
1. the big temperature difference heat-exchange unit of absorption-compression type, mainly by generator, the first evaporator, absorber, the first condenser,
Second condenser, the second evaporator, compressor, throttle valve, heat exchanger, water circulating pump, part flow arrangement and converging device are formed；
Generator has high temperature heat source pipeline and external communication, and heat exchanger has high temperature heat source pipeline and external communication, and the second condenser has height
Temperature-heat-source pipeline and external communication, the first evaporator have high temperature heat source pipeline and external communication, and the second evaporator has high temperature heat source
Pipeline and external communication, the series connection of high temperature heat source pipeline are condensed by absorption heat pump generator, heat exchanger, compression heat pump second
The second evaporator of device, the first evaporator of absorption heat pump and compression heat pump.Absorber has heated medium pipeline to join with external
Logical, the first condenser has heated medium pipeline and external communication, and heat exchanger has heated medium pipeline and external communication, one
For the series connection of heated medium pipeline by absorber and the first condenser, another part heated medium pipeline independently flows through heat exchange
Device forms the big temperature difference heat-exchange unit of absorption-compression type.
2. the big temperature difference heat-exchange unit of absorption-compression type is the big temperature of absorption-compression type described in claim 1
In poor heat-exchange unit, part flow arrangement and converging device are reduced, heated medium pipeline parallel connection is entered into absorption heat pump and heat exchange
Device is adjusted to absorber and the first condenser that the series connection of heated medium pipeline sequentially enters absorption heat pump, enters back into heat exchange
Device forms the big temperature difference heat-exchange unit of absorption-compression type.
It is further illustrated the present invention by taking the big temperature difference heat-exchange unit of absorption-compression type shown in Fig. 1 as an example below：
In Fig. 1, after high temperature heat source cools down in absorption heat pump generator and heat exchanger, into the second condenser of compression heat pump
Interior heating, the heat source temperature into the first evaporator of absorption heat pump increases, in the first evaporator of absorption heat pump and compression
Second evaporator of heat pump cools down successively, this just brings following effect：
(1) the first evaporator of absorption heat pump generates the refrigerant vapour of higher temperature, and lithium-bromide solution concentration can be in absorber
It is lower, so as to which generation concentration lower in generator under identical condensing pressure can realize lower generation temperature, high warm
The temperature drop of bigger is realized in generator in source.
(2) the utilization final temperature of high temperature heat source reduces again in the second evaporator of compression heat pump, has widened high warm
The temperature difference between source outlet temperature and heated medium inlet temperature.
Description of the drawings：
Fig. 1 is the absorption-compression type provided according to the present invention big temperature difference heat-exchange unit the 1st kind of structure and flow diagram.
Fig. 2 is that the 2nd kind of structure of the big temperature difference heat-exchange unit of the absorption-compression type provided according to the present invention and flow are shown
It is intended to.
In figure, 1-absorption heat pump, 2-compression heat pump, 3-heat exchanger, 4-converging device, 5-water circulating pump,
6-part flow arrangement, G-generator, E1- the first evaporator, A-absorber, C1- the first condenser, C2- the second condenser,
E2- the second evaporator, K-compressor, T-throttle valve.
Specific embodiment：
The present invention is described in detail with example below in conjunction with the accompanying drawings.
What the big temperature difference heat-exchange unit of absorption-compression type shown in FIG. 1 was realized in：
1. mainly by generator G, the first evaporator E1, absorber A, the first condenser C1, the second condenser C2, the second evaporator
E2, compressor K, throttle valve T, heat exchanger 3, water circulating pump 5, converging device 4 and part flow arrangement 6 formed；Generator G has high temperature
Heat source pipeline and external communication, heat exchanger 3 have high temperature heat source pipeline and external communication, the second condenser C2There is high temperature heat source pipeline
With external communication, the first evaporator E1There are high temperature heat source pipeline and external communication, the second evaporator E2Have high temperature heat source pipeline with it is outer
Portion's unicom, the series connection of high temperature heat source pipeline is by absorption heat pump generator G, heat exchanger 3, the second condenser of compression heat pump C2、
The first evaporator of absorption heat pump E1With the second evaporator of compression heat pump E2.Absorber A has heated medium pipeline to join with external
It is logical, the first condenser C1There are heated medium pipeline and external communication, heat exchanger 3 has heated medium pipeline and external communication,
Heated medium is divided into two parts through part flow arrangement 6, and a part of heated medium pipeline series connection is by the condensations of absorber A and first
Device C1, another part heated medium pipeline independently flows through heat exchanger 3, and two parts heated medium is through converging device 4 through cycle
Water pump 5 is delivered to pipe network, forms the big temperature difference heat-exchange unit of absorption-compression type.
2. in flow, high temperature heat source cools down followed by absorption heat pump generator G and heat exchanger 3, compression is then flowed through
The second condenser of formula heat pump C2Heating, passes through the first evaporator of absorption heat pump E1E is evaporated with compression heat pump second2Device drops
Temperature；A heated medium part is followed by absorption heat pump absorber A and the first condenser C1Heating, a part flow through heat exchange
Device 3 heats up, and forms the big temperature difference heat-exchange unit of absorption-compression type.
What the big temperature difference heat-exchange unit of absorption-compression type shown in Fig. 2 was realized in：
1. it in structure, in the big temperature difference heat-exchange unit of absorption-compression type shown in Fig. 1, reduces part flow arrangement 6 and interflow fills
4 are put, heated medium pipeline parallel connection is entered into absorption heat pump 1 and heat exchanger 3, is adjusted to the series connection of heated medium pipeline successively
Into the absorber A and the first condenser C of absorption heat pump1, heat exchanger 3 is entered back into, forms the big temperature difference of absorption-compression type
Heat-exchange unit.
2. in flow, heated medium is connected followed by absorption heat pump absorber A, the first condenser C1And heat exchanger
3 heatings, form the big temperature difference heat-exchange unit of absorption-compression type.
The effect that the technology of the present invention can be realized --- the big temperature difference heat exchanger of absorption-compression type proposed by the invention
Group has following effect and advantage：
(1) high temperature heat source heats up after absorption heat pump generator and heat exchanger cooling using the condenser of compression heat pump,
The evaporating temperature of absorption heat pump evaporator can be improved, and then reduces the concentration of absorption installation lithium-bromide solution, most final decline
The generation temperature of low absorption formula heat pump generator realizes that high temperature heat source has the temperature drop of bigger in generator.
(2) the high temperature heat source come out from the first evaporator of absorption heat pump, it is further into the second evaporator of compression heat pump
Cooling plays the low advantage of compression heat pump evaporating temperature, utmostly reduces the utilization final temperature of high temperature heat source.
(3) the big temperature difference heat-exchange unit of absorption-compression type proposed, makes full use of absorption heat pump and compression heat pump
The technical advantage of itself extends the application range of absorption heat pump and compression heat pump, has creative, novelty well
And practicability.
Claims (2)
1. the big temperature difference heat-exchange unit of absorption-compression type, mainly by generator, the first evaporator, absorber, the first condenser,
Second condenser, the second evaporator, compressor, throttle valve, heat exchanger, water circulating pump, part flow arrangement and converging device are formed；
Generator (G) has high temperature heat source pipeline and external communication, and heat exchanger (3) has high temperature heat source pipeline and external communication, the second condensation
Device (C2) there are high temperature heat source pipeline and external communication, the first evaporator (E1) there are high temperature heat source pipeline and external communication, the second evaporation
Device (E2) there are high temperature heat source pipeline and external communication, the series connection of high temperature heat source pipeline is by absorption heat pump generator (G), heat exchanger
(3), the second condenser of compression heat pump (C2), the first evaporator of absorption heat pump (E1) and the second evaporator of compression heat pump
（E2）；Absorber（A）There are heated medium pipeline and external communication, the first condenser（C1）There are heated medium pipeline and outside
Unicom, heat exchanger（3）There are heated medium pipeline and external communication, a part of heated medium pipeline series connection is by absorber
（A）With the first condenser（C1）, another part heated medium pipeline independently flows through heat exchanger (3), forms absorption-compression
The big temperature difference heat-exchange unit of type.
2. the big temperature difference heat-exchange unit of absorption-compression type, the big temperature difference heat exchange of absorption-compression type described in claim 1
In unit, part flow arrangement is reduced（6）And converging device（4）, heated medium pipeline parallel connection is entered into absorption heat pump (1) and is changed
Hot device (3) is adjusted to absorber (A) and the first condenser that the series connection of heated medium pipeline sequentially enters absorption heat pump
(C1), heat exchanger (3) is entered back into, forms the big temperature difference heat-exchange unit of absorption-compression type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810192947.5A CN108224844A (en) | 2018-03-09 | 2018-03-09 | The big temperature difference heat-exchange unit of absorption-compression type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810192947.5A CN108224844A (en) | 2018-03-09 | 2018-03-09 | The big temperature difference heat-exchange unit of absorption-compression type |
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| CN108224844A true CN108224844A (en) | 2018-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912138A (en) * | 2020-07-21 | 2020-11-10 | 同方节能工程技术有限公司 | Big difference in temperature heat exchanger group of type of rising temperature absorption |
-
2018
- 2018-03-09 CN CN201810192947.5A patent/CN108224844A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912138A (en) * | 2020-07-21 | 2020-11-10 | 同方节能工程技术有限公司 | Big difference in temperature heat exchanger group of type of rising temperature absorption |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180629 |
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| WD01 | Invention patent application deemed withdrawn after publication |