CN103868131B - Fuel supplementing type suction-type lithium bromide heat-exchange system - Google Patents

Fuel supplementing type suction-type lithium bromide heat-exchange system Download PDF

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Publication number
CN103868131B
CN103868131B CN201410071231.1A CN201410071231A CN103868131B CN 103868131 B CN103868131 B CN 103868131B CN 201410071231 A CN201410071231 A CN 201410071231A CN 103868131 B CN103868131 B CN 103868131B
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hot water
lithium bromide
unit
type
direct
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CN103868131A (en
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毛洪财
袁全国
贺湘晖
袁冬梅
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Shuangliang Eco Energy Systems Co Ltd
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Shuangliang Eco Energy Systems Co Ltd
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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
    • 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

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  • Sorption Type Refrigeration Machines (AREA)

Abstract

The present invention relates to a kind of fuel supplementing type suction-type lithium bromide heat-exchange system, including 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), the secondary net hot water going out a secondary net hot water tube system (1) is introduced into the generator (404) of hot water lithium bromide absorbing unit (4), enter back into heat exchanger (3), enter back into the vaporizer (501) of direct-burning type lithium bromide absorption type unit (5)；The hot water backwater's parallel connection going out secondary network hot water tube system (2) is divided into two-way, one road first flows through the vaporizer (401) of hot water lithium bromide absorbing unit (4), entering back into heat exchanger (3), another road is then in parallel or random order is connected, series-parallel form flows through absorber (402), condenser (403) and absorber (502), condenser (503).Native system can realize increasing by a secondary net hot water and effectively utilizes the temperature difference and undertake the purpose of heating network peakload.

Description

Fuel supplementing type suction-type lithium bromide heat-exchange system
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
After a secondary net hot water is heated up at thermal source in conventional central heating system, it is sent to each heat user by heating network, after being lowered the temperature by heat exchanger heat exchange with secondary network hot water at each heat user, then returns heat temperature raising at thermal source by heating network.
The ordinary heat exchanger (being water-water heat exchanger in diagram) as shown in Figure 1 used at each heat user, 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, completing secondary network hot water and take the process of heat from a secondary net hot water, secondary network hot water is transported to thermal field for producing or life, heating again.
For reducing heating network construction cost and heat conveying cost, need 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, thus reduce required flow in the case of carrying identical heat.But owing to the heatproof of heating network limits, the supply water temperature of a secondary net hot water can not be the highest.And the ordinary heat exchanger used, 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 needs the inlet temperature higher than secondary network hot water in theory.After the temperature of secondary network hot water determines, the return water temperature of a secondary net hot water is restricted, and the available temperature difference of a secondary net hot water is limited by secondary network hot water temperature.If new flow process and system can be used, in the case of ensureing 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, then can realize aforementioned minimizing heating network construction cost and the purpose of heat conveying cost.
Additionally, because central heating system needs heat demand during satisfied cold snap, thus heating network is all the design and construction carried out according to maximum heating demand, but in actual moving process, the heating system overwhelming majority time is all to run under part heating demand, and this has resulted in the waste of heating network heat capacity.If new flow process and system can be used, the peakload of heat supply peak period is undertaken by the equipment of heat user, central heating network is made only to undertake a certain degree of basic load, under the most identical central heating ability, 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
It is an object of the invention to provide a kind of return water temperature reducing a secondary net hot water in original technical foundation, to realize increasing a secondary net hot water effective heat release temperature difference, and the suction-type lithium bromide heat-exchange system of central heating system spike heating demand can be undertaken.
The object of the present invention is achieved like this: a kind of fuel supplementing type suction-type lithium bromide heat-exchange system, including 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 includes vaporizer, absorber, condenser and generator, direct-burning type lithium bromide absorption type unit includes vaporizer, absorber, condenser and generator, the secondary net hot water going out a described secondary net hot water tube system is introduced into the generator of hot water lithium bromide absorbing unit, enter back into heat exchanger the most afterwards, then the vaporizer of direct-burning type lithium bromide absorption type unit is entered back into, last again through a secondary net hot water tube system outflow；The hot water backwater's parallel connection going out described secondary network hot water tube system is divided into two-way, after wherein a road first flows through the vaporizer of hot water lithium bromide absorbing unit, enter back into heat exchanger, become a road secondary network hot water the most afterwards to supply water, another road series sequence flows through the absorber of direct-burning type lithium bromide absorption type unit, the absorber of hot water lithium bromide absorbing unit, condenser and the condenser of direct-burning type lithium bromide absorption type unit, become another road secondary network hot water the most afterwards to supply water, described two road secondary network hot water are flowed out by secondary network hot water tube system after supplying water individually or converging.
The present invention is by arranging hot water lithium bromide absorbing unit and direct-burning type lithium bromide absorption type unit, a part of secondary network hot water is flowed through the vaporizer of hot water lithium bromide absorbing unit, enter back into after cooling in heat exchanger with a secondary net hot water heat exchange, the temperature making a secondary net hot water go out heat exchanger drops lower than secondary network return water temperature, the water that one secondary net goes out heat exchanger again flows through the vaporizer of direct-burning type lithium bromide absorption type unit, cooling further, so that a secondary net hot water is even lower.The direct-burning type lithium bromide absorption type unit of the present invention is not required to when part heating demand run, only by a secondary net hot water liberated heat heating secondary network hot water；When the heat of a secondary net hot water can not meet heat demand, restart direct-burning type lithium bromide absorption type unit, on the one hand the return water temperature of a secondary net hot water can be reduced further, extract more heat in secondary network hot water, on the other hand, the heat that fuel combustion produces can supply 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 increasing by secondary net hot water effective heat release temperature difference and undertaking the purpose of heating network spike heating demand.
The invention has the beneficial effects as follows:
1, when a secondary net hot water flow is fixed, use unit of the present invention can reduce its return water temperature, improve and effectively utilize the temperature difference, the extraction of heat can be increased and utilize quantity, improve the heat capacity of system.
2, during identical heating demand, afterburning fuel can undertake spike heating demand, and heating network only needs to undertake a certain degree of basic load, thus reduces the flow of a secondary net hot water, reduces the construction cost at its conveying cost and heating network, thermal source.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of conventional ordinary heat exchanger.
Fig. 2 is the fundamental diagram of fuel supplementing type suction-type lithium bromide heat-exchange system of the present invention.
Reference 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, the vaporizer 401 of hot water lithium bromide absorbing unit 4, absorber 402, condenser 403 and generator 404, the vaporizer 501 of direct-burning type lithium bromide absorption type unit 5, absorber 502, condenser 503 and generator 504.
One secondary net hot water enters A1, a secondary net hot water goes out A2, secondary network hot water backwater enters B1, secondary network hot water backwater goes out B2, fuel enters C1, discharge fume C2.
Detailed description of the invention
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 includes vaporizer 401, absorber 402, condenser 403 and generator 404.Direct-burning type lithium bromide absorption type unit 5 includes vaporizer 501, absorber 502, condenser 503 and generator 504.The secondary net hot water that one secondary net hot water tube system 1 comes is introduced into after the generator 404 of hot water lithium bromide absorbing unit 4 once lowers the temperature as driving heat source, entering back into heat exchanger 3 reducing temperature twice, the vaporizer 501 finally entering direct-burning type lithium bromide absorption type unit 5 is lowered the temperature again；Hot water backwater's parallel connection that secondary network hot water tube system 2 comes is divided into two-way, after one road first flows through vaporizer 401 refrigeration cool-down of hot water lithium bromide absorbing unit 4, enter back into heat exchanger 3 and a secondary net hot water heat exchange heats up, another road series sequence flows through the absorber 502 of direct-burning type lithium bromide absorption type unit 5, the absorber 402 of hot water lithium bromide absorbing unit 4, condenser 403 and the condenser 503 of direct-burning type lithium bromide absorption type unit 5, and two road secondary network hot water backwaters are flowed out by secondary network hot water tube system 2 after converging.Burning in the generator 504 of fuel entrance direct-burning type lithium bromide absorption type unit 5, flue gas discharges unit.
Hot water lithium bromide absorbing unit, direct-burning type lithium bromide absorption type unit in fuel supplementing type suction-type lithium bromide heat-exchange system shown in Fig. 2 may each be 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, it is also possible to be open system.
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 comes is that parallel connection is divided into two-way, after one road first flows through vaporizer 401 refrigeration cool-down of hot water lithium bromide absorbing unit 4, entering back into heat exchanger 3 and a secondary net hot water heat exchange heats up, another road is that series connection flows through the absorber 502 of direct-burning type lithium bromide absorption type unit 5, the absorber 402 of hot water lithium bromide absorbing unit 4, condenser 403 and the condenser 503 of direct-burning type lithium bromide absorption type thermal spike unit 5；It can also be that parallel connection is divided into two-way, after one road first flows through vaporizer 401 refrigeration cool-down of hot water lithium bromide absorbing unit 4, entering back into heat exchanger 3 and a secondary net hot water heat exchange heats up, another road is then in parallel or random order is connected, series-parallel form flows through the absorber 502 of the absorber 402 of hot water lithium bromide absorbing unit 4, condenser 403 and direct-burning type lithium bromide absorption type unit 5, condenser 503.

Claims (3)

  1. null1. a fuel supplementing type suction-type lithium bromide heat-exchange system，Including 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) includes vaporizer (401)、Absorber (402)、Condenser (403) and generator (404)，Direct-burning type lithium bromide absorption type unit (5) includes vaporizer (501)、Absorber (502)、Condenser (503) and generator (504)，The secondary net hot water going out a described secondary net hot water tube system (1) is introduced into the generator (404) of hot water lithium bromide absorbing unit (4)，Enter back into heat exchanger (3) the most afterwards，Then the vaporizer (501) of direct-burning type lithium bromide absorption type unit (5) is entered back into，Last again through secondary net hot water tube system (1) outflow；The hot water backwater's parallel connection going out described secondary network hot water tube system (2) is divided into two-way, after wherein a road first flows through the vaporizer (401) of hot water lithium bromide absorbing unit (4), enter back into heat exchanger (3), become a road secondary network hot water the most afterwards to supply water, another road series sequence flows through the absorber (502) of direct-burning type lithium bromide absorption type unit (5), 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), become another road secondary network hot water the most afterwards to supply water, described two road secondary network hot water are flowed out by secondary network hot water tube system (2) after supplying water individually or converging.
  2. A kind of fuel supplementing type suction-type lithium bromide heat-exchange system the most according to claim 1, it is characterised in that: hot water lithium bromide absorbing unit (4) and direct-burning type lithium bromide absorption type unit (5) in described system they are single-action, economic benefits and social benefits or diarcs unit.
  3. A kind of fuel supplementing type suction-type lithium bromide heat-exchange system the most according to claim 1, it is characterised in that: a secondary net hot water tube system (1) and secondary network hot water tube system (2) in described system they are closed circulation systems, or open system.
CN201410071231.1A 2014-03-01 2014-03-01 Fuel supplementing type suction-type lithium bromide heat-exchange system Active CN103868131B (en)

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Publication number Priority date Publication date Assignee Title
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2121794A1 (en) * 1991-10-30 1993-05-13 Theodore C. Gilles Ancillary heat pump apparatus for producing domestic hot water

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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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