CN103868131A - 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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- CN103868131A CN103868131A CN201410071231.1A CN201410071231A CN103868131A CN 103868131 A CN103868131 A CN 103868131A CN 201410071231 A CN201410071231 A CN 201410071231A CN 103868131 A CN103868131 A CN 103868131A
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- hot water
- lithium bromide
- unit
- absorption type
- bromide absorption
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The invention relates to an after-burning lithium bromide absorption type heat exchange system, which 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), then enters the heat exchanger (3), and next enters an evaporator (501) of the direct burning type lithium bromide absorption type machine unit (5), 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 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.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 of central heating system spike heating demand.
The object of the present invention is achieved like this: a kind of fuel supplementing type suction-type lithium bromide heat-exchange system, 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, and then enter the evaporimeter of direct-burning type lithium bromide absorption type unit, 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 first flow through after the evaporimeter of hot water lithium bromide absorbing unit in a road, 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 fuel supplementing type suction-type lithium bromide of the present invention heat-exchange system, the hot water backwater's parallel connection that goes out described secondary network hot water tube system is divided into two-way, the wherein road evaporimeter of hot water lithium bromide absorbing unit of first flowing through, enter again heat exchanger, out becoming afterwards a road secondary network hot water supplies water, the flow through condenser of absorber, condenser and direct-burning type lithium bromide absorption type unit of absorber, hot water lithium bromide absorbing unit of direct-burning type lithium bromide absorption type unit of another road series sequence, out becomes afterwards another road secondary network hot water and supplies water.
The present invention is by arranging hot water lithium bromide absorbing unit and direct-burning type lithium bromide absorption type unit, evaporimeter by a part of secondary network flow of hot water through hot water lithium bromide absorbing unit, after cooling, enter again in heat exchanger and a secondary net hot water heat exchange, the temperature that makes a secondary net hot water go out heat exchanger is fallen lowlyer than secondary network return water temperature, again a secondary net is gone out to the current of heat exchanger through the evaporimeter of direct-burning type lithium bromide absorption type unit, further cooling, thus a secondary net hot water 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 fuel supplementing type suction-type lithium bromide heat-exchange system 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 fuel supplementing type suction-type lithium bromide heat-exchange system 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, enter heat exchanger 3 reducing temperature twices, the evaporimeter 501 that finally enters direct-burning type lithium bromide absorption type unit 5 is lowered the temperature again again; Hot water backwater's parallel connection that secondary network hot water tube system 2 is come is divided into two-way, first flow through after evaporimeter 401 refrigeration cool-downs of hot water lithium bromide absorbing unit 4 in one road, entering heat exchanger 3 and a secondary net hot water heat exchange heats up again, another road series sequence is flowed through after condenser 503, the two road secondary network hot water backwaters of absorber 402, condenser 403 and direct-burning type lithium bromide absorption type unit 5 of absorber 502, hot water lithium bromide absorbing unit 4 of direct-burning type lithium bromide absorption type unit 5 converge and is flowed 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 fuel supplementing type suction-type lithium bromide heat-exchange system 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.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 fuel supplementing type suction-type lithium bromide heat-exchange system 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, first flow through after evaporimeter 401 refrigeration cool-downs of hot water lithium bromide absorbing unit 4 in one road, enter heat exchanger 3 and a secondary net hot water heat exchange again and heat up, another road is the flow through condenser 503 of absorber 402, condenser 403 and direct-burning type lithium bromide absorption type thermal spike unit 5 of absorber 502, hot water lithium bromide absorbing unit 4 of direct-burning type lithium bromide absorption type unit 5 of series connection; It can be also that parallel connection is divided into two-way, first flow through after evaporimeter 401 refrigeration cool-downs of hot water lithium bromide absorbing unit 4 in one road, 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. a fuel supplementing type suction-type lithium bromide heat-exchange system, 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), and then enter the evaporimeter (501) of direct-burning type lithium bromide absorption type unit (5), 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 first flow through after the evaporimeter (401) of hot water lithium bromide absorbing unit (4) in a road, 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 fuel supplementing type suction-type lithium bromide heat-exchange system 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 wherein road evaporimeter (401) of hot water lithium bromide absorbing unit (4) of first flowing through, 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 fuel supplementing type suction-type lithium bromide heat-exchange system 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 fuel supplementing type suction-type lithium bromide heat-exchange system 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 |
|---|---|---|---|
| CN201410071231.1A CN103868131B (en) | 2014-03-01 | 2014-03-01 | Fuel supplementing type suction-type lithium bromide heat-exchange system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071231.1A CN103868131B (en) | 2014-03-01 | 2014-03-01 | Fuel supplementing type suction-type lithium bromide heat-exchange system |
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| CN103868131A true CN103868131A (en) | 2014-06-18 |
| CN103868131B CN103868131B (en) | 2016-08-17 |
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| CN201410071231.1A Active CN103868131B (en) | 2014-03-01 | 2014-03-01 | Fuel supplementing type suction-type lithium bromide heat-exchange system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606814A (en) * | 2017-10-18 | 2018-01-19 | 双良节能系统股份有限公司 | The big temperature difference suction-type lithium bromide heat-exchange unit of Very Low Clearance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993009386A1 (en) * | 1991-10-30 | 1993-05-13 | Lennox Industries Inc. | Ancillary heat pump apparatus for producing domestic hot water |
| CN201281489Y (en) * | 2008-09-28 | 2009-07-29 | 江苏双良空调设备股份有限公司 | Thermal water vapor concurrent heating type lithium bromide absorption type water chilling unit |
| CN101526282A (en) * | 2009-01-08 | 2009-09-09 | 江苏双良空调设备股份有限公司 | Hot-water direct-fired single-double effect compound type lithium bromide absorption type cold water and cold-hot water unit |
| CN201340135Y (en) * | 2009-01-08 | 2009-11-04 | 江苏双良空调设备股份有限公司 | Hot water direct combustion single/double effect composite type lithium bromide absorption cold water/hot and cold water set |
| CN203940501U (en) * | 2014-03-01 | 2014-11-12 | 双良节能系统股份有限公司 | Fuel supplementing type suction-type lithium bromide heat-exchange system |
-
2014
- 2014-03-01 CN CN201410071231.1A patent/CN103868131B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993009386A1 (en) * | 1991-10-30 | 1993-05-13 | Lennox Industries Inc. | Ancillary heat pump apparatus for producing domestic hot water |
| CN201281489Y (en) * | 2008-09-28 | 2009-07-29 | 江苏双良空调设备股份有限公司 | Thermal water vapor concurrent heating type lithium bromide absorption type water chilling unit |
| CN101526282A (en) * | 2009-01-08 | 2009-09-09 | 江苏双良空调设备股份有限公司 | Hot-water direct-fired single-double effect compound type lithium bromide absorption type cold water and cold-hot water unit |
| CN201340135Y (en) * | 2009-01-08 | 2009-11-04 | 江苏双良空调设备股份有限公司 | Hot water direct combustion single/double effect composite type lithium bromide absorption cold water/hot and cold water set |
| CN203940501U (en) * | 2014-03-01 | 2014-11-12 | 双良节能系统股份有限公司 | Fuel supplementing type suction-type lithium bromide heat-exchange system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606814A (en) * | 2017-10-18 | 2018-01-19 | 双良节能系统股份有限公司 | The big temperature difference suction-type lithium bromide heat-exchange unit of Very Low Clearance |
| CN107606814B (en) * | 2017-10-18 | 2024-01-05 | 双良节能系统股份有限公司 | Ultra-low-height large-temperature-difference lithium bromide absorption heat exchanger unit |
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| CN103868131B (en) | 2016-08-17 |
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Application publication date: 20140618 Assignee: Jiangsu Shuangliang energy saving and Environmental Protection Engineering Technology Co.,Ltd. Assignor: Shuangliang Eco-Energy Systems Co.,Ltd. Contract record no.: X2022980017215 Denomination of invention: Lithium bromide absorption heat exchange system with supplementary combustion Granted publication date: 20160817 License type: Exclusive License Record date: 20220930 |