CN104848329B - heating system - Google Patents
heating system Download PDFInfo
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- CN104848329B CN104848329B CN201510201111.3A CN201510201111A CN104848329B CN 104848329 B CN104848329 B CN 104848329B CN 201510201111 A CN201510201111 A CN 201510201111A CN 104848329 B CN104848329 B CN 104848329B
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- heat exchanger
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Abstract
The present invention provides a kind of heating system, including absorption heat pump and water circuit system, absorption heat pump includes generator, condenser, absorber and evaporator, and water circuit system includes primary side water route and secondary side water route；Secondary side water route includes the first branch and the second branch parallel with one another, wherein, absorber and condenser series connection are on the first leg；Primary side water route and generator, the second branch in secondary side water route and evaporator heat exchange.Heating system according to the present invention, due to primary side water route only with generator, the second branch in secondary side water route and evaporator heat exchange, compared with prior art, reduce electric heating pump evaporator heat exchange, primary side hot water resistance can be effectively reduced, no longer need to set primary side water pump so that system is simpler.Further, since resistance reduces, flow velocity increase in evaporator so that evaporator can design more flow numbers, so as to improve evaporator heat transfer efficiency.
Description
Technical field
The present invention relates to heat supply process field, in particular to a kind of heating system.
Background technology
In the prior art, application of the thermal power cogeneration central heating system in northern China urban heating is very universal.
In thermal power cogeneration central heating system, the once net return water temperature of central heating system is reduced, is conducive to recycle Cogeneration Heat
Condensation heat at source is used for heat supply, and the efficiency of co-generation unit can be substantially improved.In the prior art, Chinese patent
ZL2008101010645 proposes a kind of heat-exchange unit of absorption heat pump, can reduce once net in each thermal substation of heat supply network
Return water temperature.ZL2011102465935 proposes another combined type heat-exchange unit, on the basis of ZL2008101010645
On add the compression type heat pump assemblys of external series, can further reduce once net return water temperature.
However, simple Absorption heat-transformer, the heat pump type heat exchanging unit of single-stage that ZL2008101010645 is proposed, once
During net supply water temperature relatively low (such as 100~110 DEG C), it is only capable of once net return water temperature being down to more than 30 DEG C.Due to once net
The cooling capacity deficiency of backwater, the condenser thermal Finite recycled at heat source.The combined type that ZL2013106819695 is proposed is changed
Heat engine group, although once net return water temperature can be reduced further, needs an absorption heat pump and a compression type heat
Series connection of pumps, causes unit volume increase, cost increase, once net resistance increases.
The content of the invention
A kind of the present invention is intended to provide heating system for reducing primary side hot water resistance.
The present invention provides a kind of heating system, including absorption heat pump and water circuit system, absorption heat pump includes occurring
Device, condenser, absorber and evaporator, water circuit system include primary side water route and secondary side water route；Secondary side water route includes phase
The mutually first branch and the second branch in parallel, wherein, absorber and condenser series connection are on the first leg；Primary side water route and hair
Raw device, the second branch and evaporator heat exchange in secondary side water route.
Further, generator is connected on primary side water route.
Further, heating system further includes first circulation system, and primary side water route passes through first circulation system with generator
System heat exchange；Wherein, first circulation system includes First Heat Exchanger and first circulation circuit, the heating Tandem of First Heat Exchanger
On primary side water route, the heated Tandem of generator and First Heat Exchanger is on first circulation circuit.
Further, heating system further includes second circulation system, and primary side water route is by second circulation system with occurring
Device and the second branch exchange heat；Wherein, second circulation system includes the second heat exchanger and second circulation circuit, the second heat exchanger bag
A heating passage and two heated passages are included, on primary side water route, second changes the heating Tandem of the second heat exchanger
For one heated Tandem of hot device in the second branch, another of generator and the second heat exchanger are heated Tandem
On second circulation circuit.
Further, evaporator series are on primary side water route.
Further, heating system further includes third circulation system, and primary side water route passes through the 3rd cyclic system with evaporator
System heat exchange；Wherein, third circulation system includes the 3rd heat exchanger and the 3rd circulation loop, the heating Tandem of the 3rd heat exchanger
On primary side water route, the heated Tandem of evaporator and the 3rd heat exchanger is on the 3rd circulation loop.
Further, heating system further includes the 4th circulatory system, and primary side water route passes through the 4th circulatory system and evaporation
Device and the second branch exchange heat；Wherein, the 4th circulatory system includes the 4th heat exchanger and the 4th circulation loop, the 4th heat exchanger bag
A heating passage and two heated passages are included, on primary side water route, the 4th changes the heating Tandem of the 4th heat exchanger
For one heated Tandem of hot device in the second branch, another of evaporator and the 4th heat exchanger are heated Tandem
On the 4th circulation loop.
Further, heating system further includes the 5th heat exchanger；The heating Tandem of 5th heat exchanger is in primary side water
Lu Shang, the heated Tandem of the 5th heat exchanger is in the second branch in secondary side water route.
Further, absorber is the multistage absorption device being serially connected；Evaporator is the multi-stage evaporator being serially connected.
Further, heating system further includes vapor compressor.
Heating system according to the present invention, due to primary side water route only with generator, secondary side water route the second branch and
Evaporator heat exchange, compared with prior art, reduces electric heating pump evaporator heat exchange, can be effectively reduced primary side hot water resistance, no
Need to set primary side water pump again so that system is simpler.Further, since resistance reduces, flow velocity increase in evaporator so that steam
Hair device can design more flow numbers, so as to improve evaporator heat transfer efficiency.
Brief description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the principle schematic of the first embodiment of heating system according to the present invention；
Fig. 2 is the principle schematic of the second embodiment of heating system according to the present invention；
Fig. 3 is the principle schematic of the 3rd embodiment of heating system according to the present invention；
Fig. 4 is the principle schematic of the fourth embodiment of heating system according to the present invention；
Fig. 5 is the principle schematic of the 5th embodiment of heating system according to the present invention；
Fig. 6 is the principle schematic of the sixth embodiment of heating system according to the present invention；
Fig. 7 is the principle schematic of the 7th embodiment of heating system according to the present invention；
Fig. 8 is the principle schematic of the 8th embodiment of heating system according to the present invention.
Description of reference numerals：
1st, generator；2nd, condenser；3a, first absorber；3b, secondary absorber；4a, level-one evaporator；4b, two level are steamed
Send out device；5th, solution heat exchanger；6th, the 5th heat exchanger；7th, solution circulation pump；8th, cryogen water-circulating pump, 9, first every pressure device；10、
Second every pressure device；11st, first circulation pumps；12nd, First Heat Exchanger；13rd, the 3rd circulating pump；14th, the 3rd heat exchanger；15th, second
Circulating pump；16th, the second heat exchanger；17th, the 4th circulating pump；18th, the 4th heat exchanger；19th, vapor compressor.
Embodiment
Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
As shown in Fig. 1 to Fig. 8 heating system, including absorption heat pump and water circuit system according to the present invention, absorption heat pump bag
Generator 1, condenser 2, absorber and evaporator are included, water circuit system includes primary side water route and secondary side water route；Secondary side water
Road includes the first branch and the second branch parallel with one another, wherein, absorber and condenser 2 are connected on the first leg；Once
Side water route and generator 1, the second branch in secondary side water route and evaporator heat exchange.Due to primary side water route only with generator, two
The second branch and evaporator heat exchange in secondary side water route, compared with prior art, reduce electric heating pump evaporator heat exchange, can effectively drop
Low primary side hot water resistance, it is no longer necessary to which primary side water pump is set so that system is simpler.Further, since resistance reduces, evaporation
Flow velocity increase in device so that evaporator can design more flow numbers, so as to improve evaporator heat transfer efficiency.
Specifically, the first embodiment of the present invention is illustrated with reference to Fig. 1, in the first embodiment, heating system further includes
First circulation system, primary side water route are exchanged heat with generator 1 by first circulation system；Wherein, first circulation system includes the
One heat exchanger 12 and first circulation circuit, the heating Tandem of First Heat Exchanger 12 is on primary side water route, generator 1 and
The heated Tandem of one heat exchanger 12 is on first circulation circuit.First circulation system is set, utilizes first circulation circuit
In recirculated water realize primary side water route and generator heat exchange indirectly so that by the generator of absorption heat pump and primary side water route
Isolation, in the case of preventing that water quality is poor in primary side water route, the problem of causing generator fouling and clogging, reduce maintenance cost,
Reduce use cost.
More specifically, the heating system of first embodiment mainly includes generator 1, condenser 2, absorber is multistage absorption
Device, i.e., including first absorber 3a, secondary absorber 3b, similarly, evaporator is also multistage absorption device, including level-one evaporator
4a, secondary evaporimeter 4b, solution heat exchanger 5, the 5th heat exchanger 6, First Heat Exchanger 12, solution circulation pump 7, cryogen water-circulating pump
8, first every pressure device 9, and second sets first circulation pump 11 every can be gone here and there in pressure device 10, first circulation circuit, is followed so as to provide
Gyration power.
In Fig. 1, primary side water route (A1-A2) is sequentially connected the heating passage of First Heat Exchanger 12, the 5th heat exchanger 6
Passage is heated, secondary evaporimeter 4b, level-one evaporator 4a return to heat source.Secondary side water route (B1-B2) is divided into two branch in parallel
Road, one of branch successively flow through secondary absorber 3b, first absorber 3a, condenser 2 and are heated in series.
Another branch enters the heated passage of the 5th heat exchanger 6 and is heated.Two branches are finally mixed be incorporated as secondary water outlet to
User's heat supply.Second of way of realization is as shown in Fig. 2, by generator 1, condenser 2, first absorber 3a,
The second embodiment of the heating system of the present invention, in a second embodiment, heating system are illustrated with reference to Fig. 2
Including third circulation system, primary side water route is exchanged heat with evaporator by third circulation system；Wherein, third circulation system includes
3rd heat exchanger 14 and the 3rd circulation loop, the heating Tandem of the 3rd heat exchanger 14 on primary side water route, evaporator and
The heated Tandem of 3rd heat exchanger 14 is on the 3rd circulation loop.Similar to the first circulation system in first embodiment
System, by setting third circulation system, primary side water route and evaporator are realized using the recirculated water in the 3rd circulation loop indirectly
Heat exchange, so that the evaporator of absorption heat pump be isolated with primary side water route, prevents the situation that water quality is poor in primary side water route
Under, the problem of causing fouling of evaporator to block, reduce maintenance cost, reduces use cost.
Similar to first embodiment, absorber is multistage absorption device, i.e., including first absorber 3a, secondary absorber 3b,
Evaporator is also multistage absorption device, including level-one evaporator 4a, secondary evaporimeter 4b.Primary side water route is sequentially connected generator 1,
The heating passage of 5th heat exchanger 6, the 3rd heat exchanger 14 return to heat source.Secondary water inlet is divided into two branches in parallel, wherein one
A branch successively flows through secondary absorber 3b, first absorber 3a, condenser 2 and is heated in series.Another branch
Into the 5th heat exchanger 6 heated passage and be heated.Two secondary water branches are finally mixed to be incorporated as secondary water outlet to building
Build heat supply.The 3rd circulating pump 13 is arranged in series on 3rd circulation loop, the 3rd circulating pump 13 drives evaporator recirculated water two
Circulated between level evaporator 4b, level-one evaporator 4a and the 3rd heat exchanger 14.
The 3rd embodiment of the heating system of the present invention, in the third embodiment, heating system are illustrated with reference to Fig. 3
Including second circulation system, primary side water route is exchanged heat by second circulation system and generator 1 and the first branch；Wherein,
Two-circulation system includes the second heat exchanger 16 and second circulation circuit, and the second heat exchanger 16 includes a heating passage and two quilts
Passage is heated, for the heating Tandem of the second heat exchanger 16 on primary side water route, one of the second heat exchanger 16 is heated logical
Road is connected on the first leg, and another of 1 and second heat exchanger 16 of generator is heated Tandem in second circulation circuit
On.First circulation system and the 5th heat exchanger 6 are integrated using second circulation system.Similarly, second circulation is returned
It can be gone here and there in road and set second circulation pump 15, so as to provide circulation power.
Primary side water route is sequentially connected the heated passage of the second heat exchanger 16, secondary evaporimeter 4b, level-one evaporator 4a
Return to heat source.Secondary side water route is divided into two branches in parallel, and one of branch successively flows through two level suction in series
Receive device 3b, first absorber 3a, condenser 2 and be heated.Another branch enters the heated passage and quilt of the second heat exchanger 16
Heating.Two secondary water branches are finally mixed to be incorporated as secondary water outlet to building heat supplying.
The fourth embodiment of the heating system of the present invention, in the fourth embodiment, heating system are illustrated with reference to Fig. 4
Including the 4th circulatory system, primary side water route is exchanged heat by the 4th circulatory system with evaporator and the first branch；Wherein, the 4th
The circulatory system includes the 4th heat exchanger 18 and the 4th circulation loop, and the 4th heat exchanger 18 includes a heating passage and two are added
The passage of heat, the heating Tandem of the 4th heat exchanger 18 is on primary side water route, a heated passage of the 4th heat exchanger 18
On the first leg, another of evaporator and the 4th heat exchanger 18 are heated Tandem on the 4th circulation loop for series connection.
Similar to the second circulation system in second embodiment, using the 4th circulatory system, by second circulation system and the 5th heat exchanger 6
Integrate.
In the fourth embodiment, primary side water route is sequentially connected generator 1, and the heating passage of the 4th heat exchanger 18 returns to heat
Source.Secondary water inlet is divided into two branches in parallel, and one of branch successively flows through secondary absorber 3b, one in series
Level absorber 3a, condenser 2 are simultaneously heated.Another branch enters the heated passage of the 4th heat exchanger 18 and is heated.Two
Secondary water branch is finally mixed to be incorporated as secondary water outlet to building heat supplying.4th circulating pump 17 drives evaporator recirculated water in two level
Circulated between evaporator 4b, level-one evaporator 4a and the 4th heat exchanger 18.
5th embodiment as shown in Figure 5, on the basis of first embodiment, adds vapor compressor 19.
Sixth embodiment as shown in Figure 6, on the basis of second embodiment, adds vapor compressor 19.
7th embodiment as shown in Figure 7, on the basis of 3rd embodiment, adds vapor compressor 19.
8th embodiment as shown in Figure 8, on the basis of fourth embodiment, adds vapor compressor 19.
In the five to eight embodiment, vapor compresses after generator 1 occurs out by liquid-blocking device and vapor
19 elevated pressure of machine, then it is condensed into water to condenser 2.It is more prone to by the vapor after compressor adherence pressure in condenser
It is condensed, so as to improve the condensing pressure of condenser, increases condensation number.In a water inlet temperature relatively low (such as 100~110
DEG C) when, the condensing pressure of condenser is improved, the effect for increasing condensation number becomes apparent from, so that absorber import solution concentration is improved,
Increase the uptake of absorber solution and the evaporation capacity of evaporator water as refrigerant, reduce primary water temperature.
Vapor compressor 19 is added in generation-condensation process of absorption heat pump, it is relatively low in a water inlet temperature
When (such as 100~110 DEG C), the condensing pressure of condenser can be improved, increases condensation number, improves absorber import solution concentration, is increased
Add the uptake of absorber solution and the evaporation capacity of evaporator water as refrigerant, so as to reduce primary water temperature.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
1st, vapor compressor 19 is added in generation-condensation process of heat pump unit, it is relatively low in a water inlet temperature
When (such as 100~110 DEG C), the condensing pressure of condenser can be improved, increases condensation number, improves absorber import solution concentration, is increased
Add the uptake of absorber solution and the evaporation capacity of evaporator water as refrigerant, so as to reduce primary water temperature.
2nd, using multistage absorption device and multi-stage evaporator, evaporation-absorption process of heat pump unit is divided into 2~3 grades, is improved
The thermodynamic perfect degree of heat pump unit entirety, reduces primary water temperature.
3rd, primary side hot water releases heat, secondary side heat in series through generator, the water-water heat exchanger of absorption heat pump
Water is heated by the absorber of absorption heat pump, the condenser of absorption heat pump, water-water heat exchanger.
4th, primary side hot water releases heat, secondary side heat in series through the evaporator of water-water heat exchanger, absorption heat pump
Water is heated by the absorber of absorption heat pump, the condenser of absorption heat pump, water-water heat exchanger.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of heating system, including absorption heat pump and water circuit system, the absorption heat pump includes generator (1), condensation
Device (2), absorber and evaporator, the water circuit system include primary side water route and secondary side water route；It is characterized in that,
The secondary side water route includes the first branch and the second branch parallel with one another, wherein, the absorber and the condensation
Device (2) is connected in the first branch；
The primary side water route and generator (1), the second branch in the secondary side water route and the evaporator heat exchange；
The heating system further includes second circulation system, and the primary side water route passes through the second circulation system and the hair
Raw device (1) and the second branch exchange heat；
Wherein, the second circulation system includes the second heat exchanger (16) and second circulation circuit, second heat exchanger (16)
Including a heating passage and two heated passages, the heating Tandem of second heat exchanger (16) is in the primary side
On water route, a heated Tandem of second heat exchanger (16) in the second branch, the generator (1) and
Another of second heat exchanger (16) is heated Tandem on the second circulation circuit；
The heating system further includes first circulation system, and the primary side water route passes through described first with the generator (1)
The circulatory system exchanges heat；
Wherein, the first circulation system includes First Heat Exchanger (12) and first circulation circuit, the First Heat Exchanger (12)
Heating Tandem on the primary side water route, being heated for the generator (1) and the First Heat Exchanger (12) is logical
Road is connected on the first circulation circuit.
2. heating system according to claim 1, it is characterised in that
The generator (1) is connected on the primary side water route.
3. heating system according to claim 1, it is characterised in that
The evaporator series are on the primary side water route.
4. heating system according to claim 1, it is characterised in that
The heating system further includes third circulation system, and the primary side water route passes through the described 3rd circulation with the evaporator
System exchanges heat；
Wherein, the third circulation system includes the 3rd heat exchanger (14) and the 3rd circulation loop, the 3rd heat exchanger (14)
Heating Tandem on the primary side water route, the heated passage string of the evaporator and the 3rd heat exchanger (14)
It is associated on the 3rd circulation loop.
5. heating system according to claim 1, it is characterised in that
The heating system further includes the 4th circulatory system, and the primary side water route passes through the 4th circulatory system and the steaming
Hair device and the second branch exchange heat；
Wherein, the 4th circulatory system includes the 4th heat exchanger (18) and the 4th circulation loop, the 4th heat exchanger (18)
Including a heating passage and two heated passages, the heating Tandem of the 4th heat exchanger (18) is in the primary side
On water route, a heated Tandem of the 4th heat exchanger (18) is in the second branch, the evaporator and institute
Another heated Tandem of the 4th heat exchanger (18) is stated on the 4th circulation loop.
6. heating system according to claim 1, it is characterised in that
The heating system further includes the 5th heat exchanger (6)；
On the primary side water route, the 5th heat exchanger (6) is added the heating Tandem of 5th heat exchanger (6)
The passage of heat is connected in the second branch in the secondary side water route.
7. heating system according to any one of claim 1 to 6, it is characterised in that
The absorber is the multistage absorption device being serially connected；
The evaporator is the multi-stage evaporator being serially connected.
8. heating system according to any one of claim 1 to 6, it is characterised in that
The heating system further includes vapor compressor (19), and vapor passes through the water vapor pressure in the generator (1)
The condenser (2) is discharged into after contracting machine (19) compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201111.3A CN104848329B (en) | 2015-04-24 | 2015-04-24 | heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201111.3A CN104848329B (en) | 2015-04-24 | 2015-04-24 | heating system |
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| Publication Number | Publication Date |
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| CN104848329A CN104848329A (en) | 2015-08-19 |
| CN104848329B true CN104848329B (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510201111.3A Active CN104848329B (en) | 2015-04-24 | 2015-04-24 | heating system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163474A (en) * | 2018-10-16 | 2019-01-08 | 山东金佰瑞节能科技有限公司 | One pump multistage absorption-multistage evaporation absorption heat pump processed and the method for increasing the temperature difference |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264623A (en) * | 1998-03-19 | 1999-09-28 | Hitachi Ltd | Absorptive refrigerator |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| CN202851099U (en) * | 2013-01-15 | 2013-04-03 | 苟仲武 | Improved absorption-heat-pump-type steam-extraction-type steamer power generation system |
| CN103542446A (en) * | 2013-09-25 | 2014-01-29 | 清华大学 | Afterburning absorption heat exchanger unit |
| CN104566597A (en) * | 2014-12-19 | 2015-04-29 | 珠海格力电器股份有限公司 | Heat pump unit |
| CN204786687U (en) * | 2015-04-24 | 2015-11-18 | 珠海格力电器股份有限公司 | Heating system |
-
2015
- 2015-04-24 CN CN201510201111.3A patent/CN104848329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264623A (en) * | 1998-03-19 | 1999-09-28 | Hitachi Ltd | Absorptive refrigerator |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| CN202851099U (en) * | 2013-01-15 | 2013-04-03 | 苟仲武 | Improved absorption-heat-pump-type steam-extraction-type steamer power generation system |
| CN103542446A (en) * | 2013-09-25 | 2014-01-29 | 清华大学 | Afterburning absorption heat exchanger unit |
| CN104566597A (en) * | 2014-12-19 | 2015-04-29 | 珠海格力电器股份有限公司 | Heat pump unit |
| CN204786687U (en) * | 2015-04-24 | 2015-11-18 | 珠海格力电器股份有限公司 | Heating system |
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| CN104848329A (en) | 2015-08-19 |
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