CN104848325B - Absorption type heat pump-type heat-exchange unit - Google Patents
Absorption type heat pump-type heat-exchange unit Download PDFInfo
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- CN104848325B CN104848325B CN201510200689.7A CN201510200689A CN104848325B CN 104848325 B CN104848325 B CN 104848325B CN 201510200689 A CN201510200689 A CN 201510200689A CN 104848325 B CN104848325 B CN 104848325B
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Abstract
The present invention provides a kind of absorption type heat pump-type heat-exchange unit, including absorption heat pump, the first water water- to-water heat exchanger and water circuit system, absorption heat pump include generator, condenser, absorber and evaporator；The water circuit system includes primary side water route and secondary side water route, primary side water route is by the way of sequential concatenation step by step, primary side water route returns to central heating heat source after generator and the first water water- to-water heat exchanger successively or primary side water route returns to the central heating heat source after the first water water- to-water heat exchanger and evaporator successively；Secondary side water route includes the two-way of parallel connection, wherein returning to heat user after absorber and condenser successively all the way, another way returns to the heat user after the first water water- to-water heat exchanger.The absorption type heat pump-type heat-exchange unit of the present invention, primary side hot water resistance substantially reduce, and generator and evaporator velocity in pipes increase, and improve the coefficient of heat transfer.
Description
Technical field
The present invention relates to heat-exchange unit field more particularly to a kind of absorption type heat pump-type heat-exchange units.
Background technology
Application of the thermal power cogeneration central heating system in northern China urban heating is very universal.Reduce central heating system
The primary net return water temperature of system, can be substantially improved the performance of co-generation unit：1, be conducive to recycle at cogeneration of heat and power heat source
Condensation heat is used for heat supply；2, the conveying heat of central heating network can be significantly increased.Current various changing using absorption heat pump
Heat engine group has obtained large-scale application, and primary net return water temperature can be greatly reduced.
ZL200810101064.5 proposes a kind of heat-exchange unit using absorption heat pump, is being concentrated originally for substituting
The heat exchanger used in each thermal substation of heat supply network is, it can be achieved that the leaving water temperature that primary side goes out heat-exchange unit is less than secondary side into water temperature
Degree.In the art, a lateral line passes through generator, the water-of absorption heat pump successively by the way of sequential concatenation step by step
The evaporator of water- to-water heat exchanger high temperature side, absorption heat pump, secondary lateral line hot water by absorption heat pump absorber, absorption
Condenser, the water-water heat exchanger low temperature side of heat pump.In the prior art, there is following defects：1, in the heat-exchange unit,
The resistance of primary side hot water is excessive.Since a lateral line is by the way of sequential concatenation step by step, pass through absorption heat pump successively
Generator, water-water heat exchanger, absorption heat pump evaporator, the resistance that primary side hot water need to overcome be generator, water-water
The sum of heat exchanger, evaporator (generally 15mH2O or more).Since the lift of primary side hot water provides (one by Integrated mining technology
As be 10mH2Within O), often there is the situation of primary net lift deficiency, needs in addition to increase a water pump in primary net.2、
Generator and evaporator velocity in pipes are too small, and the coefficient of heat transfer is relatively low.On the one hand, due to realizing the big temperature difference of primary side hot water,
In the big temperature difference heat-exchange unit, the flow of primary side hot water is only 60% or less using conventional water-water heat exchanger；Another party
Face is limited by a collateral resistance, and the flow number of generator and evaporator is difficult to increase.Therefore, in the heat-exchange unit, occur
The velocity in pipes of device and evaporator is 0.6m/s hereinafter, cause the coefficient of heat transfer of generator and evaporator relatively low, the volume of unit
Increase.3, in once netting often there are a large amount of impurity, welding slag, calcium ions and magnesium ions etc. in heat supply, is directly entered lithium bromide chiller and is easy to lead
It causes that the failures such as blocking, fouling occur inside unit so that the performance of unit substantially reduces.
Invention content
In view of the present situation of the prior art, the purpose of the present invention is to provide a kind of absorption type heat pump-type heat-exchange unit, one
Secondary side hot water resistance substantially reduces, and generator or evaporator velocity in pipes increase, and improve the coefficient of heat transfer.To achieve the above object,
Technical scheme is as follows：
A kind of absorption type heat pump-type heat-exchange unit, including absorption heat pump, the first water-water heat exchanger and water circuit system, institute
It includes generator, condenser, absorber and evaporator to state absorption heat pump；The water circuit system includes primary side water route and secondary
Side water route, by the way of sequential concatenation step by step, the generator is passed through in the primary side water route successively in the primary side water route
Pass through the first water-water successively with central heating heat source or the primary side water route is returned to after first water-water heat exchanger
The central heating heat source is returned after heat exchanger and the evaporator；The secondary side water route includes the two-way of parallel connection, wherein one
Road returns to heat user after the absorber and the condenser successively, and another way is after first water-water heat exchanger
Return to the heat user.
In one of the embodiments, when first water-water heat exchanger and described is passed through in the primary side water route successively
When evaporator, the water circuit system further includes generator circulation waterway, the low temperature side and the hair of first water-water heat exchanger
Raw device forms the generator circulation waterway.
In one of the embodiments, when the generator and the first water-water are passed through in the primary side water route successively
When heat exchanger returns to the central heating heat source, the water loop system further includes evaporator circulation waterway, the first water-water
The low temperature side of heat exchanger forms the evaporator circulation waterway with the evaporator.
The absorption type heat pump-type heat-exchange unit further includes the second water-water heat exchanger, institute in one of the embodiments,
State high temperature side, first water-water heat exchanger and the evaporation that second water-water heat exchanger is passed through in primary side water route successively
Device returns to the central heating heat source.
The water circuit system further includes generator circulation waterway in one of the embodiments, the second water-water heat exchange
The low temperature side of device and the generator form the generator circulation waterway.
The absorption type heat pump-type heat-exchange unit further includes the second water-water heat exchanger, institute in one of the embodiments,
Primary side water route is stated to return after the generator, first water-water heat exchanger and second water-water heat exchanger successively
The central heating heat source.
The water loop system further includes evaporator circulation waterway in one of the embodiments, and the second water-water changes
The low temperature side of hot device forms the evaporator circulation waterway with the evaporator.
The central heating heat source is boiler in one of the embodiments,.
The quantity at least two of first water-water heat exchanger in one of the embodiments, at least two described first
Water-water heat exchanger is sequentially connected in series to form multistage water-water heat exchanger.
The absorption type heat pump-type heat-exchange unit is lithium bromide absorption type heat pump type heat exchanger in one of the embodiments,
Group.
The beneficial effects of the invention are as follows：
The absorption type heat pump-type heat-exchange unit of the present invention, a lateral line are passed through successively by the way of sequential concatenation step by step
The generator and water-water heat exchanger of absorption heat pump are crossed, or passes through the evaporator of water-water heat exchanger and absorption heat pump successively；
The resistance that primary side hot water need to overcome is the sum of generator and water-water heat exchanger of absorption heat pump or primary side hot water need gram
The resistance of clothes is the sum of evaporator and water-water heat exchanger of absorption heat pump.Compared with the prior art, primary side hot water resistance is big
Big to reduce, primary side hot water resistance is from 15mH2O or more is reduced to 8mH2In addition O is hereinafter, need not increase primary net water pump.
Since primary side hot water only needs that the resistance of generator and water-water heat exchanger or primary side hot water is overcome only to need
The resistance for overcoming evaporator and water-water heat exchanger is supplied to the lift of generator to greatly improve.Since the resistance of evaporator is by two
Lift that secondary net water pump provides overcomes, and the lift of evaporator is supplied to also to greatly improve.Therefore, under enough lifts, hair
Raw device and evaporator can design more flow numbers, and generator or evaporator velocity in pipes increase, and the coefficient of heat transfer improves.Make hair
The velocity in pipes of raw device and evaporator is increased to 1m/s.As velocity in pipes increases, the coefficient of heat transfer of generator and evaporator can
Increase by 20% or more, unit volume is made to reduce 10%.
In generator, evaporator by the way of closed cycle circuit, by generator, evaporator and a water segregation,
When preventing primary net water quality poor, generator, evaporator block, fouling the problem of.The time interval for increasing cleaning heat exchanger tube, subtracts
30% or more small maintenance cost.When central heating heat source is boiler, the primary net hot water of high temperature generated using boiler drives
The absorption type heat pump-type heat-exchange unit of the present invention reduces primary net return water temperature, greatly promotes pipe network heat capacity, and to adopt
(such as with various low grade residual heats:Fume afterheat, industrial exhaust heat, underground heat, solar energy etc.) it provides the foundation.
Description of the drawings
Fig. 1 is one schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention；
Fig. 2 is two schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention；
Fig. 3 is three schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention；
Fig. 4 is the absorption type heat pump-type heat-exchange unit example IV schematic diagram of the present invention；
Fig. 5 is five schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention；
Fig. 6 is six schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention；
Fig. 7 is seven schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention；
Fig. 8 is eight schematic diagram of absorption type heat pump-type heat-exchange unit embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, right with reference to the accompanying drawings and embodiments
The heat pump type heat exchanging unit of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used
In explaining the present invention, it is not intended to limit the present invention.
Referring to figs. 1 to Fig. 8, as shown in figures 1 and 3, the absorption type heat pump-type heat-exchange unit of one embodiment of the invention is bromine
Change lithium-absorbing formula heat pump type heat exchanging unit comprising absorption heat pump, the first water-water heat exchanger 5 and water circuit system.Absorption type heat
Pump includes generator 1, condenser 2, absorber 3 and evaporator 4.The water circuit system includes primary side water route and secondary side water
Road, primary side water route and secondary side water route are separate flow road.
By the way of sequential concatenation step by step, generator 1 and the first water-water are passed through in primary side water route successively in primary side water route
Central heating heat source is returned after heat exchanger 5 or primary side water route returns after the first water-water heat exchanger 5 and evaporator 4 successively
The central heating heat source, a water proceeds to the flow direction that a water goes out to represent primary side water route in figure, specific flow direction such as arrow in figure
Shown in head direction.
Secondary side water route includes the two-way of parallel connection, is used wherein returning to heat after absorber 3 and condenser 2 successively all the way
Family, another way return to the heat user after the first water-water heat exchanger 5.Two-way in figure after parallel connection merges into be returned all the way
The heat user, secondary water proceeds to the flow direction that secondary water goes out to represent secondary side water route in figure, and the specific flow direction in secondary side water route is such as
In figure shown in arrow direction.
Primary side hot water releases heat in series through the first water-water heat exchanger (one or more) or evaporator, secondary
Side hot water is heated by absorber, condenser, water-water heat exchanger.
As a kind of embodiment, as shown in Figure 1, when the first water-water heat exchanger 5 is passed through in the primary side water route successively
When returning to the central heating heat source with evaporator 4, the water circuit system further includes generator circulation waterway.First water-water changes
The low temperature side and generator 1 of hot device 5 form the generator circulation waterway.Wherein, the first water-water is passed through in primary side water route successively
Central heating heat source is returned after the high temperature side and evaporator 4 of heat exchanger 5.
Preferably, it is connected in the generator circulation waterway using water circulating pump 7.
Conducted heat using closed cycle circuit between primary side water route and generator, by generator and a water every
From, prevent when a water water quality is poor and is directly entered generator, generator occur block, fouling the problem of.
As a kind of embodiment, as shown in Fig. 2, wherein being carried out to absorption type heat pump-type heat-exchange unit shown in FIG. 1
Optimization, increases the second water-water heat exchanger 6.The primary side water route successively pass through the second water-water heat exchanger 6 high temperature side,
The high temperature side and evaporator 4 of first water-water heat exchanger 5 return to the central heating heat source.Preferably, the water circuit system also wraps
Generator circulation waterway is included, the generator circulation waterway is independent flow road.The low temperature side of second water-water heat exchanger 6 and
Generator 1 forms the generator circulation waterway.
Preferably, it is connected in the generator circulation waterway using water circulating pump 7, generator recirculated water is in the second water-
It is recycled between the low temperature side of water- to-water heat exchanger 6, water circulating pump 7, generator 1.Second water-water heat exchanger 6 is set, is further improved
The heat exchange property of water.
As a kind of embodiment, as shown in figure 3, when generator 1 and the first water-are passed through in the primary side water route successively
When the high temperature side of water- to-water heat exchanger 5 returns to the central heating heat source, the water loop system further includes evaporator circulation waterway, institute
It states evaporator circulation waterway and is independent flow road.The low temperature side of first water-water heat exchanger 5 forms the evaporation with evaporator 4
Device circulation waterway.
Preferably, it is connected in the evaporator circulation waterway using water circulating pump 7, evaporator recirculated water is in the first water-
It is recycled between the low temperature side of water- to-water heat exchanger 5, water circulating pump 7, evaporator 4.
Primary side hot water is put in series through generator, the first water-water heat exchanger (one or more) of absorption heat pump
Go out heat, secondary side hot water is heated by absorber, condenser and the first water-water heat exchanger.
It is conducted heat using closed cycle circuit between water and evaporator at one time, evaporator and a water segregation is prevented
Only a water water quality is poor and when being directly entered evaporator, the problem of blocking, fouling occurs in evaporator.
As a kind of embodiment, as shown in figure 4, wherein being carried out to absorption type heat pump-type heat-exchange unit shown in Fig. 3
Optimization, increases the second water-water heat exchanger 6.Generator 1, the first water-water heat exchanger 5 are passed through in the primary side water route successively
High temperature side and the second water-water heat exchanger 6 high temperature side after return to the central heating heat source.Preferably, the water loop system
System further includes evaporator circulation waterway, and the evaporator circulation waterway is independent flow road.Second water-water heat exchanger 6 it is low
Warm side forms the evaporator circulation waterway with evaporator 4.
Preferably, it is connected in the evaporator circulation waterway using water circulating pump 7.Evaporator recirculated water is in the second water-
It is recycled between the low temperature side of water- to-water heat exchanger 6, water circulating pump 7, evaporator 4.Second water-water heat exchanger 6 is set, is further improved
The heat exchange property of water.
As another embodiment, as shown in Fig. 5 to Fig. 8, the central heating heat in above each embodiment
Source is boiler.When the central heating heat source is boiler (fire coal, combustion gas, fuel oil etc.), the high temperature one of boiler generation is utilized
Secondary net hot water flooding moves heat-exchange unit, and primary net return water temperature is reduced, and greatly promotes pipe network heat capacity, and for using various low
Grade waste heat is (such as:Fume afterheat, industrial exhaust heat, underground heat, solar energy etc.) it provides the foundation.
The absorption type heat pump-type heat-exchange unit of the above various embodiments, a lateral line by the way of sequential concatenation step by step,
Pass through the generator and water-water heat exchanger of absorption heat pump successively, or passes through the steaming of water-water heat exchanger and absorption heat pump successively
Send out device；The resistance that primary side hot water need to overcome is the sum of generator and water-water heat exchanger of absorption heat pump or primary side hot water
The resistance that need to be overcome is the sum of evaporator and water-water heat exchanger of absorption heat pump.Compared with the prior art, primary side hot water hinders
Power substantially reduces, and primary side hot water resistance is from 15mH2O or more is reduced to 8mH2In addition O is hereinafter, need not increase primary net water pump.
Since primary side hot water only needs that the resistance of generator and water-water heat exchanger or primary side hot water is overcome only to need
The resistance for overcoming evaporator and water-water heat exchanger is supplied to the lift of generator to greatly improve.Since the resistance of evaporator is by two
Lift that secondary net water pump provides overcomes, and the lift of evaporator is supplied to also to greatly improve.Therefore, under enough lifts, hair
Raw device and evaporator can design more flow numbers, and generator or evaporator velocity in pipes increase, and the coefficient of heat transfer improves.Make hair
The velocity in pipes of raw device and evaporator is increased to 1m/s.As velocity in pipes increases, the coefficient of heat transfer of generator and evaporator can
Increase by 20% or more, unit volume is made to reduce 10%.
In generator, evaporator by the way of closed cycle circuit, by generator, evaporator and a water segregation,
When preventing primary net water quality poor, generator, evaporator block, fouling the problem of.The time interval for increasing cleaning heat exchanger tube, subtracts
30% or more small maintenance cost.When central heating heat source is boiler, the primary net hot water of high temperature generated using boiler drives
The absorption type heat pump-type heat-exchange unit of the present invention reduces primary net return water temperature, greatly promotes pipe network heat capacity, and to adopt
(such as with various low grade residual heats:Fume afterheat, industrial exhaust heat, underground heat, solar energy etc.) it provides the foundation.
The quantity of the absorption type heat pump-type heat-exchange unit of the above various embodiments, the first water-water heat exchanger can be two or more,
More than two first water-water heat exchangers are sequentially connected in series to form multistage water-water heat exchanger.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (4)
1. a kind of absorption type heat pump-type heat-exchange unit, it is characterised in that：
Including absorption heat pump, the first water-water heat exchanger (5) and water circuit system, the absorption heat pump include generator (1),
Condenser (2), absorber (3) and evaporator (4)；The water circuit system includes primary side water route and secondary side water route, and described one
By the way of sequential concatenation step by step, the generator (1) and described first are passed through in the primary side water route successively in secondary side water route
Water-water heat exchanger (5) returns to central heating heat source or the primary side water route and passes through first water-water heat exchanger successively afterwards
(5) and the evaporator (4) returns to the central heating heat source afterwards；The secondary side water route includes the two-way of parallel connection, wherein one
Road returns to heat user after the absorber (3) and the condenser (2) successively, and another way is changed by the first water-water
Hot device (5) returns to the heat user afterwards；
When first water-water heat exchanger (5) and the evaporator (4) are passed through in the primary side water route successively, the water route
System further includes generator circulation waterway, and the low temperature side and the generator (1) of first water-water heat exchanger (5) form institute
Generator circulation waterway is stated, water circulating pump (7) is connected in the generator circulation waterway；
When the generator (1) and first water-water heat exchanger (5) the return concentration are passed through in the primary side water route successively
When heat source, the water circuit system further includes evaporator circulation waterway, the low temperature side of first water-water heat exchanger (5) with
The evaporator (4) forms the evaporator circulation waterway, and water circulating pump (7) is connected in the evaporator circulation waterway.
2. absorption type heat pump-type heat-exchange unit according to claim 1, it is characterised in that：
The central heating heat source is boiler.
3. absorption type heat pump-type heat-exchange unit according to claim 1, it is characterised in that：
The quantity at least two of first water-water heat exchanger (5), at least two first water-water heat exchangers (5) are gone here and there successively
It connects to form multistage water-water heat exchanger.
4. absorption type heat pump-type heat-exchange unit according to claim 1, it is characterised in that：
The absorption type heat pump-type heat-exchange unit is lithium bromide absorption type heat pump type heat-exchange unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510200689.7A CN104848325B (en) | 2015-04-24 | 2015-04-24 | Absorption type heat pump-type heat-exchange unit |
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| CN201510200689.7A CN104848325B (en) | 2015-04-24 | 2015-04-24 | Absorption type heat pump-type heat-exchange unit |
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| CN104848325B true CN104848325B (en) | 2018-09-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101450092B (en) * | 2007-12-03 | 2013-01-09 | 成都中医药大学 | Vladimiria root extract, composition containing the vladimiria root extract and use thereof |
| CN106765533A (en) * | 2016-12-29 | 2017-05-31 | 大连葆光节能空调设备厂 | A kind of absorption heat exchange unit highly effective heating control system |
| CN109681943A (en) * | 2018-12-24 | 2019-04-26 | 珠海格力电器股份有限公司 | Heating system |
| CN111336573B (en) * | 2019-08-30 | 2024-05-28 | 同方节能工程技术有限公司 | Novel absorption type large-temperature-difference heat exchanger unit |
| CN112555960B (en) * | 2020-11-27 | 2022-07-08 | 清华大学 | Double-water-outlet temperature heating station |
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| CN204693556U (en) * | 2015-04-24 | 2015-10-07 | 珠海格力电器股份有限公司 | Absorption type heat pump-type heat-exchange unit |
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| GB0525969D0 (en) * | 2005-12-21 | 2006-02-01 | Hook Martin | A heating module and controller that increases the efficiency of heat pumps for domestic hot water and under floor heating |
| CN103542446B (en) * | 2013-09-25 | 2016-05-18 | 清华大学 | A kind of fuel supplementing type absorption heat exchange unit |
| CN103512075B (en) * | 2013-09-25 | 2016-06-15 | 清华大学 | A kind of absorption heat exchange unit being combined with boiler |
| CN203940504U (en) * | 2014-03-01 | 2014-11-12 | 双良节能系统股份有限公司 | The suction-type lithium bromide heat-exchange system of two path water heat supply simultaneously |
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| CN204693556U (en) * | 2015-04-24 | 2015-10-07 | 珠海格力电器股份有限公司 | Absorption type heat pump-type heat-exchange unit |
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