CN103868130A - After-burning lithium bromide absorption type heat exchange system - Google Patents
After-burning lithium bromide absorption type heat exchange system Download PDFInfo
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- CN103868130A CN103868130A CN201410071230.7A CN201410071230A CN103868130A CN 103868130 A CN103868130 A CN 103868130A CN 201410071230 A CN201410071230 A CN 201410071230A CN 103868130 A CN103868130 A CN 103868130A
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Abstract
The invention relates to an after-burning lithium bromide absorption type heat exchange system, which belongs to the technical field of air conditioning equipment and comprises a primary network hot water pipeline system (1), a secondary network hot water pipeline system (2), a heat exchanger (3), a hot water type lithium bromide absorption type machine unit (4) and a direct burning type lithium bromide absorption type machine unit (5), wherein primary network hot water from the primary network hot water pipeline system (1) firstly enters a generator (404) of the hot water type lithium bromide absorption type machine unit (4) and then enters the heat exchanger (3), hot water return water from the secondary network hot water pipeline system (2) is connected in parallel to be divided into two paths, one path firstly flows through an evaporator (401) of the hot water type lithium bromide absorption type machine unit (4) and an evaporator (501) of the direct burning type lithium bromide absorption type machine unit (5), and then enters the heat exchanger (3), and the other path flows through an absorber (402), a condenser (403), an absorber (502) and a condenser (503) in a parallel connection, any sequence serial connection or serial and parallel connection form. The system can realize the goals of increasing effective temperature differences of the primary network hot water and bearing the peak load of a heat supply pipe network.
Description
Technical field
The present invention relates to a kind of suction-type lithium bromide heat-exchange system with afterburning.Belong to air conditioner technical field.
Background technology
In conventional central heating system, a secondary net hot water is heated after intensification at thermal source place, is sent to each hot user by heating network, after each hot user place lowers the temperature by heat exchanger heat exchange with secondary network hot water, then returns to thermal source place heat temperature raising by heating network.
Each hot user locates common heat exchanger (being water-water heat exchanger in diagram) as shown in Figure 1 using, one secondary net hot water and secondary network hot water carry out heat exchange by heat exchanger tube (shell-and-tube heat exchanger) or heat-transfer surface (plate type heat exchanger), heat in one secondary net hot water is delivered in secondary network hot water, one secondary net hot water temperature declines, secondary network hot water temperature raises, complete the process of secondary network hot water heat-obtaining from a secondary net hot water, secondary network hot water be transported to again with thermal field for production or life, heating.
For reducing heating network construction cost and heat delivery cost, need to increase the supply water temperature of a secondary net hot water as far as possible or reduce its return water temperature, to increase supply backwater temperature difference, thereby in the situation that carrying identical heat, reduce required flow.But due to the heatproof restriction of heating network, the supply water temperature of a secondary net hot water can not be too high.And the common heat exchanger adopting, a secondary net hot water and secondary network hot water need certain heat transfer temperature difference could realize effective heat exchange, so the return water temperature of a secondary net hot water in theory need be higher than the inlet temperature of secondary network hot water.After the temperature of secondary network hot water is determined, the return water temperature of a secondary net hot water is restricted, and the temperature difference utilized of a secondary net hot water is subject to secondary network hot water temperature's restriction.If can adopt new flow process and system, in the situation that guaranteeing secondary network hot water temperature, reduce the return water temperature of a secondary net hot water, break through its restriction bottleneck higher than secondary network hot water inlet temperature, can realize the object of aforementioned minimizing heating network construction cost and heat delivery cost.
In addition, heat demand need to meet cold snap because of central heating system time, thereby heating network is all the design and establishing carrying out according to maximum heating demand, but in actual moving process, the heating system overwhelming majority time is all to move under part heating demand, and this has just caused the waste of heating network heat capacity.If can adopt new flow process and system, the device assumes of being located by hot user is fallen the heat supply peakload of peak period, make central heating network only bear basic load to a certain degree, in same set under heat capacity, the construction cost of heating network can reduce, the oepration at full load time lengthening of heating network, the investment utilization ratio of heating network can get a promotion.
Summary of the invention
The object of the present invention is to provide a kind of return water temperature that reduces a secondary net hot water in original technical foundation, increase the effective heat release temperature difference of a secondary net hot water to realize, and can bear the suction-type lithium bromide heat-exchange system with afterburning of central heating system spike heating demand.
The object of the present invention is achieved like this: a kind of suction-type lithium bromide heat-exchange system with afterburning, comprise a secondary net hot water tube system, secondary network hot water tube system and heat exchanger, described system has additional hot water lithium bromide absorbing unit and direct-burning type lithium bromide absorption type unit, hot water lithium bromide absorbing unit comprises evaporimeter, absorber, condenser and generator, direct-burning type lithium bromide absorption type unit comprises evaporimeter, absorber, condenser and generator, a secondary net hot water that goes out a described secondary net hot water tube system is introduced into the generator of hot water lithium bromide absorbing unit, out, enter again heat exchanger, finally flow out through a secondary net hot water tube system again, the hot water backwater's parallel connection that goes out described secondary network hot water tube system is divided into two-way, wherein the first sequential flow in a road is after the evaporimeter of hot water lithium bromide absorbing unit and the evaporimeter of direct-burning type lithium bromide absorption type unit, enter again heat exchanger, out becoming afterwards a road secondary network hot water supplies water, another road is parallel connection or random order series connection, the flow through absorber of hot water lithium bromide absorbing unit of series-parallel form, the absorber of condenser and direct-burning type lithium bromide absorption type unit, condenser, out becoming afterwards another road secondary network hot water supplies water, described two road secondary network hot water supply water and flow out by secondary network hot water tube system separately or after converging.
A kind of suction-type lithium bromide heat-exchange system with afterburning of the present invention, the hot water backwater's parallel connection that goes out described secondary network hot water tube system is divided into two-way, the first sequential flow in one road is after the evaporimeter of hot water lithium bromide absorbing unit and the evaporimeter of direct-burning type lithium bromide absorption type unit, enter again heat exchanger, out becoming afterwards a road secondary network hot water supplies water, the flow through absorber of direct-burning type lithium bromide absorption type unit of another road series sequence, the absorber of hot water lithium bromide absorbing unit, the condenser of condenser and direct-burning type lithium bromide absorption type unit, out becoming afterwards another road secondary network hot water supplies water.
The present invention is by arranging hot water lithium bromide absorbing unit and direct-burning type lithium bromide absorption type unit, by a part of secondary network hot water sequential flow through the evaporimeter of hot water lithium bromide absorbing unit and the evaporimeter of apotype lithium bromide absorption-type machine unit, after cooling, just enter in heat exchanger and a secondary net hot water heat exchange, thereby the temperature that makes a secondary net hot water go out heat exchanger is even lower.Direct-burning type lithium bromide absorption type unit of the present invention does not need operation in the time of part heating demand, only by a secondary net hot water liberated heat heating secondary network hot water; In the time that the heat of a secondary net hot water can not meet heat demand, restart direct-burning type lithium bromide absorption type unit, can further reduce on the one hand the return water temperature of a secondary net hot water, extract more heat in secondary network hot water, on the other hand, the heat that fuel combustion produces can be supplied the breach between a secondary net hot water thermal amount and heating demand, bears spike heating demand.Compared with conventional art, the present invention can realize the object that increases the effective heat release temperature difference of a secondary net hot water and bear heating network spike heating demand.
The invention has the beneficial effects as follows:
1, when a secondary net hot water flow is fixing, adopt unit of the present invention can reduce its return water temperature, improve and effectively utilize the temperature difference, can increase the extraction of heat and utilize quantity, improve the heat capacity of system.
2, when identical heating demand, afterburning fuel can be born spike heating demand, and heating network only needs to bear basic load to a certain degree, thereby reduces the flow of a secondary net hot water, reduces it and carry the construction cost at cost and heating network, thermal source place.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of common heat exchanger in the past.
Fig. 2 is the fundamental diagram of the suction-type lithium bromide heat-exchange system of band afterburning of the present invention.
Reference numeral in figure:
One secondary net hot water tube system 1, secondary network hot water tube system 2, heat exchanger 3, hot water lithium bromide absorbing unit 4, direct-burning type lithium bromide absorption type unit 5, evaporimeter 401, absorber 402, condenser 403 and the generator 404 of hot water lithium bromide absorbing unit 4, evaporimeter 501, absorber 502, condenser 503 and the generator 504 of direct-burning type lithium bromide absorption type unit 5.
One secondary net hot water enters A1, a secondary net hot water and goes out A2, secondary network hot water backwater and enter B1, secondary network hot water backwater and go out that B2, fuel enter C1, C2 discharges fume.
The specific embodiment
Fig. 2 is a kind of application example figure of the suction-type lithium bromide heat-exchange system with afterburning involved in the present invention.This system is made up of a secondary net hot water tube system 1, secondary network hot water tube system 2, heat exchanger 3, hot water lithium bromide absorbing unit 4 and direct-burning type lithium bromide absorption type unit 5.Hot water lithium bromide absorbing unit 4 comprises evaporimeter 401, absorber 402, condenser 403 and generator 404.Direct-burning type lithium bromide absorption type unit 5 comprises evaporimeter 501, absorber 502, condenser 503 and generator 504.After the generator 404 that the secondary net hot water that one secondary net hot water tube system 1 is come is introduced into hot water lithium bromide absorbing unit 4 is once lowered the temperature as driving heat source, then enter heat exchanger 3 reducing temperature twices, hot water backwater's parallel connection that secondary network hot water tube system 2 is come is divided into two-way, the first sequential flow in one road is after the evaporimeter 401 of hot water lithium bromide absorbing unit 4 and evaporimeter 501 refrigeration cool-downs of direct-burning type lithium bromide absorption type unit 5, entering heat exchanger 3 and a secondary net hot water heat exchange heats up again, the flow through absorber 502 of direct-burning type lithium bromide absorption type unit 5 of another road series sequence, the absorber 402 of hot water lithium bromide absorbing unit 4, the condenser 503 of condenser 403 and direct-burning type lithium bromide absorption type unit 5, after converging, two road secondary network hot water flow out by secondary network hot water tube system 2.Fuel enters burning in the generator 504 of direct-burning type lithium bromide absorption type unit 5, and flue gas is discharged unit.
Hot water lithium bromide absorbing unit in the suction-type lithium bromide heat-exchange system with afterburning shown in Fig. 2, direct-burning type lithium bromide absorption type unit can be all single-action, economic benefits and social benefits or diarcs unit, and the medium of a secondary net hot water can be water, conduction oil or other medium.Secondary network hot water can be also water or other liquid medium.One secondary net hot-water heating system and secondary network hot-water heating system can be closed circulation systems, can be also open systems.
In the suction-type lithium bromide heat-exchange system with afterburning shown in Fig. 2, the hot water backwater that secondary network hot water tube system 2 is come is that parallel connection is divided into two-way, the first sequential flow in one road is after the evaporimeter 401 of hot water lithium bromide absorbing unit 4 and evaporimeter 501 refrigeration cool-downs of direct-burning type lithium bromide absorption type unit 5, entering heat exchanger 3 and a secondary net hot water heat exchange heats up again, another road secondary network hot water is the flow through absorber 502 of direct-burning type lithium bromide absorption type unit 5 of series connection, the absorber 402 of hot water lithium bromide absorbing unit 4, the condenser 503 of condenser 403 and direct-burning type lithium bromide absorption type unit 5, it can be also that parallel connection is divided into two-way, the first sequential flow in one road is after the evaporimeter 401 of hot water lithium bromide absorbing unit 4 and evaporimeter 501 refrigeration cool-downs of direct-burning type lithium bromide absorption type unit 5, enter again heat exchanger 3 and a secondary net hot water heat exchange and heat up, flow through absorber 502, the condenser 503 of absorber 402, condenser 403 and direct-burning type lithium bromide absorption type unit 5 of hot water lithium bromide absorbing unit 4 of parallel connection or the random order series connection of another road, series-parallel form.
Claims (4)
1. the suction-type lithium bromide heat-exchange system with afterburning, comprise a secondary net hot water tube system (1), secondary network hot water tube system (2) and heat exchanger (3), it is characterized in that: described system has additional hot water lithium bromide absorbing unit (4) and direct-burning type lithium bromide absorption type unit (5), hot water lithium bromide absorbing unit (4) comprises evaporimeter (401), absorber (402), condenser (403) and generator (404), direct-burning type lithium bromide absorption type unit (5) comprises evaporimeter (501), absorber (502), condenser (503) and generator (504), a secondary net hot water that goes out a described secondary net hot water tube system (1) is introduced into the generator (404) of hot water lithium bromide absorbing unit (4), out, enter again heat exchanger (3), finally flow out through a secondary net hot water tube system (1) again, the hot water backwater's parallel connection that goes out described secondary network hot water tube system (2) is divided into two-way, wherein the first sequential flow in a road is after the evaporimeter (401) of hot water lithium bromide absorbing unit (4) and the evaporimeter (501) of direct-burning type lithium bromide absorption type unit (5), enter again heat exchanger (3), out becoming afterwards a road secondary network hot water supplies water, another road is parallel connection or random order series connection, the flow through absorber (402) of hot water lithium bromide absorbing unit (4) of series-parallel form, the absorber (502) of condenser (403) and direct-burning type lithium bromide absorption type unit (5), condenser (503), out becoming afterwards another road secondary network hot water supplies water, described two road secondary network hot water supply water and flow out by secondary network hot water tube system (2) separately or after converging.
2. a kind of suction-type lithium bromide heat-exchange system with afterburning according to claim 1, it is characterized in that: the hot water backwater's parallel connection that goes out described secondary network hot water tube system (2) is divided into two-way, the first sequential flow in one road is after the evaporimeter (401) of hot water lithium bromide absorbing unit (4) and the evaporimeter (501) of direct-burning type lithium bromide absorption type unit (5), enter again heat exchanger (3), out becoming afterwards a road secondary network hot water supplies water, the flow through absorber (502) of direct-burning type lithium bromide absorption type unit (5) of another road series sequence, the absorber (402) of hot water lithium bromide absorbing unit (4), the condenser (503) of condenser (403) and direct-burning type lithium bromide absorption type unit (5), out becoming afterwards another road secondary network hot water supplies water.
3. a kind of suction-type lithium bromide heat-exchange system with afterburning according to claim 1 and 2, is characterized in that: the hot water lithium bromide absorbing unit (4) in described system and direct-burning type lithium bromide absorption type unit (5) are single-action, economic benefits and social benefits or diarcs unit.
4. a kind of suction-type lithium bromide heat-exchange system with afterburning according to claim 1 and 2, is characterized in that: a secondary net hot-water heating system (1) and secondary network hot-water heating system (2) in described system are closed circulation systems, or open system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071230.7A CN103868130B (en) | 2014-03-01 | 2014-03-01 | The suction-type lithium bromide heat-exchange system of combustion mended by band |
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| CN201410071230.7A CN103868130B (en) | 2014-03-01 | 2014-03-01 | The suction-type lithium bromide heat-exchange system of combustion mended by band |
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| CN103868130A true CN103868130A (en) | 2014-06-18 |
| CN103868130B CN103868130B (en) | 2016-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432383A (en) * | 2020-12-09 | 2021-03-02 | 双良节能系统股份有限公司 | Integrated lithium bromide absorption type heat exchange system with afterburning function |
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| JP2004286292A (en) * | 2003-03-20 | 2004-10-14 | Denso Corp | Hot water supply device |
| CN201281490Y (en) * | 2008-09-28 | 2009-07-29 | 江苏双良空调设备股份有限公司 | Hot water burning-complement type lithium bromide absorption type water chilling unit |
| CN101629733A (en) * | 2009-08-18 | 2010-01-20 | 清华大学 | Method for reducing return water temperature of heat supply pipeline |
| CN201935620U (en) * | 2010-11-02 | 2011-08-17 | 双良节能系统股份有限公司 | Novel heat exchange system with lithium bromide absorption set |
| CN202119157U (en) * | 2011-06-25 | 2012-01-18 | 双良节能系统股份有限公司 | Steam type lithium bromide absorption type heat pump capable of efficiently utilizing working steam water condensation heat |
| CN203177524U (en) * | 2013-04-07 | 2013-09-04 | 双良节能系统股份有限公司 | Heat exchange system with multi-section lithium bromide absorption-type unit |
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| CN203940503U (en) * | 2014-03-01 | 2014-11-12 | 双良节能系统股份有限公司 | Suction-type lithium bromide heat-exchange system with afterburning |
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2014
- 2014-03-01 CN CN201410071230.7A patent/CN103868130B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004286292A (en) * | 2003-03-20 | 2004-10-14 | Denso Corp | Hot water supply device |
| CN201281490Y (en) * | 2008-09-28 | 2009-07-29 | 江苏双良空调设备股份有限公司 | Hot water burning-complement type lithium bromide absorption type water chilling unit |
| CN101629733A (en) * | 2009-08-18 | 2010-01-20 | 清华大学 | Method for reducing return water temperature of heat supply pipeline |
| CN201935620U (en) * | 2010-11-02 | 2011-08-17 | 双良节能系统股份有限公司 | Novel heat exchange system with lithium bromide absorption set |
| CN202119157U (en) * | 2011-06-25 | 2012-01-18 | 双良节能系统股份有限公司 | Steam type lithium bromide absorption type heat pump capable of efficiently utilizing working steam water condensation heat |
| CN203190489U (en) * | 2013-03-08 | 2013-09-11 | 大连三洋制冷有限公司 | Efficient lithium bromide absorption heat pump heat exchanger unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432383A (en) * | 2020-12-09 | 2021-03-02 | 双良节能系统股份有限公司 | Integrated lithium bromide absorption type heat exchange system with afterburning function |
| CN112432383B (en) * | 2020-12-09 | 2024-06-11 | 双良节能系统股份有限公司 | Integrated lithium bromide absorption heat exchange system with afterburning function |
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| CN103868130B (en) | 2016-06-01 |
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