CN104848325A - Absorption heat pump type heat exchanger unit - Google Patents
Absorption heat pump type heat exchanger unit Download PDFInfo
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- CN104848325A CN104848325A CN201510200689.7A CN201510200689A CN104848325A CN 104848325 A CN104848325 A CN 104848325A CN 201510200689 A CN201510200689 A CN 201510200689A CN 104848325 A CN104848325 A CN 104848325A
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Abstract
The invention provides an absorption heat pump type heat exchanger unit. The absorption heat pump type heat exchanger unit comprises an absorption heat pump body, a first water-water heat exchanger and a water way system, wherein the absorption heat pump body comprises a generator, a condenser, an absorber and an evaporator; the water way system comprises a primary side water way and a secondary side water way, the primary side water way is in sequential series connection step by step, the primary side water way passes through the generator and the first water-water heat exchanger in sequence and then returns to a concentrated heat supply source, or the primary side water way passes through the first water-water heat exchanger and the evaporator in sequence and then returns to the concentrated heat supply source; the secondary side water way comprises two ways which are connected in parallel, one way passes through the absorber and the condenser in sequence and then returns to a heat user, and the other way passes through the first water-water heat exchanger and then returns to the heat user. According to the absorption heat pump type heat exchanger unit, the resistance of primary side hot water is greatly reduced, the flow velocity inside the generator and the evaporator is increased, and the heat exchange coefficient is enhanced.
Description
Technical field
The present invention relates to heat-exchange unit field, particularly relate to a kind of absorption type heat pump-type heat-exchange unit.
Background technology
The application of thermal power cogeneration central heating system in northern China urban heating is very general.Reduce a secondary net return water temperature of central heating system, significantly can promote the performance of co-generation unit: 1, be conducive to reclaiming the condensation heat at cogeneration of heat and power thermal source place for heat supply; 2, the transfer heat of central heating network can significantly be increased.The heat-exchange unit of current various employing absorption heat pump obtains large-scale application, significantly can reduce a secondary net return water temperature.
ZL200810101064.5 proposes a kind of heat-exchange unit adopting absorption heat pump, for substituting the heat exchanger originally used in each thermal substation of concentrated heat supply network, can realize primary side and going out the leaving water temperature of heat-exchange unit lower than secondary side inflow temperature.In the art, primary side pipeline adopts the mode of sequential concatenation step by step, successively through the evaporimeter of the generator of absorption heat pump, water-water heat exchanger high temperature side, absorption heat pump, secondary side pipeline hot water is through absorber, the condenser of absorption heat pump, the water-water heat exchanger low temperature side of absorption heat pump.In the prior art, there is following defect: 1, in this heat-exchange unit, the resistance of primary side hot water is excessive.Because primary side pipeline adopts the mode of sequential concatenation step by step, successively through the evaporimeter of the generator of absorption heat pump, water-water heat exchanger, absorption heat pump, the resistance that primary side hot water need overcome is generator, water-water heat exchanger, evaporimeter sum (are generally 15mH
2more than O).(10mH is generally because the lift of primary side hot water is provided by Integrated mining technology
2within O), often there is the situation of a secondary net lift deficiency, need to increase a water pump in addition in a secondary net.2, generator and evaporimeter velocity in pipes too small, the coefficient of heat transfer is lower.On the one hand, owing to achieving the large temperature difference of primary side hot water, in this heat-exchange unit of the large temperature difference, the flow of primary side hot water is only and adopts less than 60% of conventional water-water heat exchanger; On the other hand, by the restriction of primary side resistance, the flow process number of generator and evaporimeter is difficult to increase.Therefore, in this heat-exchange unit, the velocity in pipes of generator and evaporimeter is below 0.6m/s, causes the coefficient of heat transfer of generator and evaporimeter lower, and the volume of unit increases.3, often there are a large amount of impurity, welding slag, calcium ions and magnesium ions etc. in heat supply one secondary net, directly enter lithium bromide chiller and easily cause the faults such as unit inside blocks, fouling, the performance of unit is reduced greatly.
Summary of the invention
In view of the present situation of prior art, the object of the present invention is to provide a kind of absorption type heat pump-type heat-exchange unit, its primary side hot water resistance reduces greatly, and generator or evaporimeter velocity in pipes increase, and improve the coefficient of heat transfer.For achieving the above object, technical scheme of the present invention is as follows:
A kind of absorption type heat pump-type heat-exchange unit, comprise absorption heat pump, the first water-water heat exchanger and water circuit system, described absorption heat pump comprises generator, condenser, absorber and evaporimeter; Described water circuit system comprises primary side water route and secondary side water route, described primary side water route adopts the mode of sequential concatenation step by step, described primary side water route returns central heating thermal source successively after described generator and described first water-water heat exchanger, or described primary side water route returns described central heating thermal source successively after described first water-water heat exchanger and described evaporimeter; Described secondary side water route comprises two-way in parallel, and wherein a road returns heat user successively after described absorber and described condenser, and another road returns described heat user after described first water-water heat exchanger.
Wherein in an embodiment, when described primary side water route is successively through described first water-water heat exchanger and described evaporimeter, described water circuit system also comprises generator circulation waterway, and the low temperature side of described first water-water heat exchanger and described generator form described generator circulation waterway.
Wherein in an embodiment, when described primary side water route returns described central heating thermal source through described generator and described first water-water heat exchanger successively, described water loop system also comprises evaporimeter circulation waterway, and the low temperature side of described first water-water heat exchanger and described evaporimeter form described evaporimeter circulation waterway.
Wherein in an embodiment, described absorption type heat pump-type heat-exchange unit also comprises the second water-water heat exchanger, and described primary side water route returns described central heating thermal source through the high temperature side of described second water-water heat exchanger, described first water-water heat exchanger and described evaporimeter successively.
Wherein in an embodiment, described water circuit system also comprises generator circulation waterway, and the low temperature side of described second water-water heat exchanger and described generator form described generator circulation waterway.
Wherein in an embodiment, described absorption type heat pump-type heat-exchange unit also comprises the second water-water heat exchanger, and described primary side water route returns described central heating thermal source successively after described generator, described first water-water heat exchanger and described second water-water heat exchanger.
Wherein in an embodiment, described water loop system also comprises evaporimeter circulation waterway, and the low temperature side of described second water-water heat exchanger and described evaporimeter form described evaporimeter circulation waterway.
Wherein in an embodiment, described central heating thermal source is boiler.
Wherein in an embodiment, the quantity at least two of described first water-water heat exchanger, at least two described first water-water heat exchangers are connected in series successively and form multistage water-water heat exchanger.
Wherein in an embodiment, described absorption type heat pump-type heat-exchange unit is lithium bromide absorption type heat pump type heat-exchange unit.
The invention has the beneficial effects as follows:
Absorption type heat pump-type heat-exchange unit of the present invention, primary side pipeline adopts the mode of sequential concatenation step by step, successively through generator and the water-water heat exchanger of absorption heat pump, or successively through the evaporimeter of water-water heat exchanger and absorption heat pump; The resistance that primary side hot water need overcome is generator and the water-water heat exchanger sum of absorption heat pump, or the primary side hot water resistance that need overcome is evaporimeter and the water-water heat exchanger sum of absorption heat pump.Compared to prior art, primary side hot water resistance reduces greatly, and primary side hot water resistance is from 15mH
2more than O reduces to 8mH
2below O, does not need to increase by a secondary net water pump in addition.
Because primary side hot water only needs the resistance overcoming generator and water-water heat exchanger, or primary side hot water only needs the resistance overcoming evaporimeter and water-water heat exchanger, and the lift being supplied to generator improves greatly.The lift provided by secondary net water pump due to the resistance of evaporimeter overcomes, and the lift being supplied to evaporimeter also improves greatly.Therefore, under enough lifts, generator and evaporimeter can design more flow process number, and generator or evaporimeter velocity in pipes increase, and the coefficient of heat transfer improves.The velocity in pipes of generator and evaporimeter is made to bring up to 1m/s.Along with velocity in pipes increases, the coefficient of heat transfer of generator and evaporimeter can increase by more than 20%, makes unit volume reduce 10%.
The mode in closed cycle loop is adopted in generator, evaporimeter, by generator, evaporimeter and a water segregation, when preventing a secondary net water quality poor, the problem of the blocking of generator, evaporimeter, fouling.Increase the time interval of cleaning heat exchanger tube, reduce maintenance cost more than 30%.When central heating thermal source is boiler, the high temperature one secondary net hot water flooding that boiler can be utilized to produce moves absorption type heat pump-type heat-exchange unit of the present invention, one secondary net return water temperature is reduced, greatly promote pipe network heat capacity, and for adopting various low grade residual heat (as: fume afterheat, industrial exhaust heat, underground heat, solar energy etc.) to provide the foundation.
Accompanying drawing explanation
Fig. 1 is absorption type heat pump-type heat-exchange unit embodiment one schematic diagram of the present invention;
Fig. 2 is absorption type heat pump-type heat-exchange unit embodiment two schematic diagram of the present invention;
Fig. 3 is absorption type heat pump-type heat-exchange unit embodiment three schematic diagram of the present invention;
Fig. 4 is absorption type heat pump-type heat-exchange unit embodiment four schematic diagram of the present invention;
Fig. 5 is absorption type heat pump-type heat-exchange unit embodiment five schematic diagram of the present invention;
Fig. 6 is absorption type heat pump-type heat-exchange unit embodiment six schematic diagram of the present invention;
Fig. 7 is absorption type heat pump-type heat-exchange unit embodiment seven schematic diagram of the present invention;
Fig. 8 is absorption type heat pump-type heat-exchange unit embodiment eight schematic diagram of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, heat pump type heat exchanging unit of the present invention is further elaborated.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Referring to figs. 1 through 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 lithium bromide absorption type heat pump type heat-exchange unit, and it comprises absorption heat pump, the first water-water heat exchanger 5 and water circuit system.Absorption heat pump comprises generator 1, condenser 2, absorber 3 and evaporimeter 4.Described water circuit system comprises primary side water route and secondary side water route, and primary side water route and secondary side water route are respective independently current road.
Primary side water route adopts the mode of sequential concatenation step by step, primary side water route returns central heating thermal source successively after generator 1 and the first water-water heat exchanger 5, or primary side water route returns described central heating thermal source successively after the first water-water heat exchanger 5 and evaporimeter 4, in figure, water proceeds to the flow direction that water goes out to represent primary side water route, specifically flows to as shown in the direction of arrow in figure.
Secondary side water route comprises two-way in parallel, and wherein a road returns heat user successively after absorber 3 and condenser 2, and another road returns described heat user after the first water-water heat exchanger 5.Two-way in figure after parallel connection merges into a road and returns described heat user, and in figure, intermediate water proceeds to the flow direction that intermediate water goes out to represent secondary side water route, and the concrete flow direction in secondary side water route is as shown in the direction of arrow in figure.
Primary side hot water releases heat in series through the first water-water heat exchanger (one or more) or evaporimeter, and secondary side hot water is heated by absorber, condenser, water-water heat exchanger.
As a kind of embodiment, as shown in Figure 1, when described primary side water route returns described central heating thermal source through the first water-water heat exchanger 5 and evaporimeter 4 successively, described water circuit system also comprises generator circulation waterway.The low temperature side of the first water-water heat exchanger 5 and generator 1 form described generator circulation waterway.Wherein, primary side water route returns central heating thermal source successively after the high temperature side of the first water-water heat exchanger 5 and evaporimeter 4.
Preferably, water circulating pump 7 is adopted to be connected in described generator circulation waterway.
Between primary side water route and generator, adopt closed cycle loop to conduct heat, by generator and a water segregation, prevent when water water quality poor and directly enter generator time, blocking appears in generator, the problem of fouling.
As a kind of embodiment, as shown in Figure 2, wherein the absorption type heat pump-type heat-exchange unit shown in Fig. 1 is optimized, adds the second water-water heat exchanger 6.Described primary side water route returns described central heating thermal source through the high temperature side of the high temperature side of the second water-water heat exchanger 6, the first water-water heat exchanger 5 and evaporimeter 4 successively.Preferably, described water circuit system also comprises generator circulation waterway, and described generator circulation waterway is independently current road.The low temperature side of the second water-water heat exchanger 6 and generator 1 form described generator circulation waterway.
Preferably, adopt water circulating pump 7 to be connected in described generator circulation waterway, generator recirculated water is circulation between the low temperature side of the second water-water heat exchanger 6, water circulating pump 7, generator 1.Second water-water heat exchanger 6 is set, further increases the heat exchange property of a water.
As a kind of embodiment, as shown in Figure 3, when described primary side water route returns described central heating thermal source through the high temperature side of generator 1 and the first water-water heat exchanger 5 successively, described water loop system also comprises evaporimeter circulation waterway, and described evaporimeter circulation waterway is independently current road.The low temperature side of the first water-water heat exchanger 5 and evaporimeter 4 form described evaporimeter circulation waterway.
Preferably, adopt water circulating pump 7 to be connected in described evaporimeter circulation waterway, evaporimeter recirculated water is circulation between the low temperature side of the first water-water heat exchanger 5, water circulating pump 7, evaporimeter 4.
Primary side hot water is in series through generator, the first water-water heat exchanger (one or more) releasing heat of absorption heat pump, and secondary side hot water is heated by absorber, condenser and the first water-water heat exchanger.
Adopt closed cycle loop to conduct heat between water and evaporimeter at one time, by evaporimeter and a water segregation, when preventing water water quality poor and directly enter evaporimeter, blocking appear in evaporimeter, the problem of fouling.
As a kind of embodiment, as shown in Figure 4, wherein the absorption type heat pump-type heat-exchange unit shown in Fig. 3 is optimized, adds the second water-water heat exchanger 6.Described primary side water route returns described central heating thermal source successively after the high temperature side of generator 1, first water-water heat exchanger 5 and the high temperature side of the second water-water heat exchanger 6.Preferably, described water loop system also comprises evaporimeter circulation waterway, and described evaporimeter circulation waterway is independently current road.The low temperature side of the second water-water heat exchanger 6 and evaporimeter 4 form described evaporimeter circulation waterway.
Preferably, water circulating pump 7 is adopted to be connected in described evaporimeter circulation waterway.Evaporimeter recirculated water is circulation between the low temperature side of the second water-water heat exchanger 6, water circulating pump 7, evaporimeter 4.Second water-water heat exchanger 6 is set, further increases the heat exchange property of a water.
As another kind of embodiment, as shown in Fig. 5 to Fig. 8, the described central heating thermal source in above each embodiment is boiler.When described central heating thermal source is boiler (fire coal, combustion gas, fuel oil etc.), the high temperature one secondary net hot water flooding utilizing boiler to produce moves heat-exchange unit, one secondary net return water temperature is reduced, greatly promote pipe network heat capacity, and for adopting various low grade residual heat (as: fume afterheat, industrial exhaust heat, underground heat, solar energy etc.) to provide the foundation.
The absorption type heat pump-type heat-exchange unit of each embodiment above, primary side pipeline adopts the mode of sequential concatenation step by step, successively through generator and the water-water heat exchanger of absorption heat pump, or successively through the evaporimeter of water-water heat exchanger and absorption heat pump; The resistance that primary side hot water need overcome is generator and the water-water heat exchanger sum of absorption heat pump, or the primary side hot water resistance that need overcome is evaporimeter and the water-water heat exchanger sum of absorption heat pump.Compared to prior art, primary side hot water resistance reduces greatly, and primary side hot water resistance is from 15mH
2more than O reduces to 8mH
2below O, does not need to increase by a secondary net water pump in addition.
Because primary side hot water only needs the resistance overcoming generator and water-water heat exchanger, or primary side hot water only needs the resistance overcoming evaporimeter and water-water heat exchanger, and the lift being supplied to generator improves greatly.The lift provided by secondary net water pump due to the resistance of evaporimeter overcomes, and the lift being supplied to evaporimeter also improves greatly.Therefore, under enough lifts, generator and evaporimeter can design more flow process number, and generator or evaporimeter velocity in pipes increase, and the coefficient of heat transfer improves.The velocity in pipes of generator and evaporimeter is made to bring up to 1m/s.Along with velocity in pipes increases, the coefficient of heat transfer of generator and evaporimeter can increase by more than 20%, makes unit volume reduce 10%.
The mode in closed cycle loop is adopted in generator, evaporimeter, by generator, evaporimeter and a water segregation, when preventing a secondary net water quality poor, the problem of the blocking of generator, evaporimeter, fouling.Increase the time interval of cleaning heat exchanger tube, reduce maintenance cost more than 30%.When central heating thermal source is boiler, the high temperature one secondary net hot water flooding that boiler can be utilized to produce moves absorption type heat pump-type heat-exchange unit of the present invention, one secondary net return water temperature is reduced, greatly promote pipe network heat capacity, and for adopting various low grade residual heat (as: fume afterheat, industrial exhaust heat, underground heat, solar energy etc.) to provide the foundation.
The absorption type heat pump-type heat-exchange unit of each embodiment above, the quantity of the first water-water heat exchanger can be two or more, and two or more first water-water heat exchanger is connected in series successively and forms multistage water-water heat exchanger.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an absorption type heat pump-type heat-exchange unit, is characterized in that:
Comprise absorption heat pump, the first water-water heat exchanger (5) and water circuit system, described absorption heat pump comprises generator (1), condenser (2), absorber (3) and evaporimeter (4); Described water circuit system comprises primary side water route and secondary side water route, described primary side water route adopts the mode of sequential concatenation step by step, described primary side water route returns central heating thermal source successively after described generator (1) and described first water-water heat exchanger (5), or described primary side water route returns described central heating thermal source successively after described first water-water heat exchanger (5) and described evaporimeter (4); Described secondary side water route comprises two-way in parallel, wherein a road returns heat user successively after described absorber (3) and described condenser (2), and another road returns described heat user after described first water-water heat exchanger (5).
2. absorption type heat pump-type heat-exchange unit according to claim 1, is characterized in that:
When described primary side water route is successively through described first water-water heat exchanger (5) and described evaporimeter (4), described water circuit system also comprises generator circulation waterway, and low temperature side and the described generator (1) of described first water-water heat exchanger (5) form described generator circulation waterway.
3. absorption type heat pump-type heat-exchange unit according to claim 1, is characterized in that:
When described primary side water route returns described central heating thermal source through described generator (1) and described first water-water heat exchanger (5) successively, described water loop system also comprises evaporimeter circulation waterway, and low temperature side and the described evaporimeter (4) of described first water-water heat exchanger (5) form described evaporimeter circulation waterway.
4. absorption type heat pump-type heat-exchange unit according to claim 1, is characterized in that:
Also comprise the second water-water heat exchanger (6), described primary side water route returns described central heating thermal source through the high temperature side of described second water-water heat exchanger (6), described first water-water heat exchanger (5) and described evaporimeter (4) successively.
5. absorption type heat pump-type heat-exchange unit according to claim 4, is characterized in that:
Described water circuit system also comprises generator circulation waterway, and low temperature side and the described generator (1) of described second water-water heat exchanger (6) form described generator circulation waterway.
6. absorption type heat pump-type heat-exchange unit according to claim 1, is characterized in that:
Also comprise the second water-water heat exchanger (6), described primary side water route returns described central heating thermal source successively after described generator (1), described first water-water heat exchanger (5) and described second water-water heat exchanger (6).
7. absorption type heat pump-type heat-exchange unit according to claim 6, is characterized in that:
Described water loop system also comprises evaporimeter circulation waterway, and low temperature side and the described evaporimeter (4) of described second water-water heat exchanger (6) form described evaporimeter circulation waterway.
8. the absorption type heat pump-type heat-exchange unit according to any one of claim 1-7, is characterized in that:
Described central heating thermal source is boiler.
9. the absorption type heat pump-type heat-exchange unit according to any one of claim 1-7, is characterized in that:
The quantity at least two of described first water-water heat exchanger (5), at least two described first water-water heat exchangers (5) are connected in series successively and form multistage water-water heat exchanger.
10. the absorption type heat pump-type heat-exchange unit according to any one of claim 1-7, is characterized in that:
Described absorption type heat pump-type heat-exchange unit is lithium bromide 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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| CN201510200689.7A CN104848325B (en) | 2015-04-24 | 2015-04-24 | Absorption type heat pump-type heat-exchange unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111336573A (en) * | 2019-08-30 | 2020-06-26 | 同方节能工程技术有限公司 | Novel absorption type large-temperature-difference heat exchange unit |
| CN112555960A (en) * | 2020-11-27 | 2021-03-26 | 清华大学 | Double-water-outlet temperature heating station |
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| CN103512075A (en) * | 2013-09-25 | 2014-01-15 | 清华大学 | Absorption heat exchanger unit combined with boiler |
| CN103542446A (en) * | 2013-09-25 | 2014-01-29 | 清华大学 | Afterburning absorption heat exchanger unit |
| 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 |
| 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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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2434196A (en) * | 2005-12-21 | 2007-07-18 | Martin Hook | Heating module and system controller for increasing the efficiency of heat pumps |
| CN103512075A (en) * | 2013-09-25 | 2014-01-15 | 清华大学 | Absorption heat exchanger unit combined with boiler |
| CN103542446A (en) * | 2013-09-25 | 2014-01-29 | 清华大学 | Afterburning absorption heat exchanger unit |
| 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111336573A (en) * | 2019-08-30 | 2020-06-26 | 同方节能工程技术有限公司 | Novel absorption type large-temperature-difference heat exchange unit |
| 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 |
| CN112555960A (en) * | 2020-11-27 | 2021-03-26 | 清华大学 | Double-water-outlet temperature heating station |
| CN112555960B (en) * | 2020-11-27 | 2022-07-08 | 清华大学 | Double-water-outlet temperature heating station |
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