CN105423595B - A kind of energy-efficient direct-burning type lithium bromide absorption type hot water or cold water unit of heating - Google Patents
A kind of energy-efficient direct-burning type lithium bromide absorption type hot water or cold water unit of heating Download PDFInfo
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- CN105423595B CN105423595B CN201510985482.5A CN201510985482A CN105423595B CN 105423595 B CN105423595 B CN 105423595B CN 201510985482 A CN201510985482 A CN 201510985482A CN 105423595 B CN105423595 B CN 105423595B
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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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Sorption Type Refrigeration Machines (AREA)
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Abstract
The present invention relates to a kind of energy-efficient direct-burning type lithium bromide absorption type hot water or cold water unit of heating, it is characterized in that：Unit adds flue gas heat-exchange unit（17）, heating evaporator（26）, heating absorber（19）, heating solution heat exchanger（20）, heating cryogenic fluid pump（21）And water circulating pump（25）, heating evaporator（26）With heating absorber（19）It is arranged in same cavity；In hot water or cold water's inlet tube of unit（15）On set up hot water line all the way, the road hot water enter heating absorber（19）In heat exchanger tube；In the solution pump discharge pipe of unit（12）On set up weak solution pipeline all the way, the road weak solution is through heating solution heat exchanger（20）Cooling enters heating absorber（19）Spray；In the evaporator liquid capsule of unit（14）On set up all the way cryogenic coolant water supplement pipeline（23）, the road water as refrigerant enter heating evaporator liquid capsule（27）It is used as cryogenic coolant water moisturizing.Effectively reduction exhaust gas temperature of the invention, improve heating efficiency, it is simple to operate.
Description
Technical field
The present invention relates to a kind of direct-burning type lithium bromide absorption type hot water or cold water unit.Belong to air conditioner technical field.
Background technology
Current direct-burning type lithium bromide absorption type hot water or cold water unit by direct combustion high pressure generator 1, low pressure as shown in figure 1, occurred
Device 9, condenser 8, evaporator 5, absorber 4, cryogenic fluid heat exchanger 3, high-temperature solution heat exchanger 2, heating concentrated solution are cut
Change valve 10, heating refrigerant vapour switching valve 11, solution pump 6, cryogenic fluid pump 7, valve and control system（Not shown in figure）And connection
The pipeline of each part is constituted.Unit is when heating operating mode is run, heating concentrated solution switching valve 10 and the switching of heating refrigerant vapour
Valve 11 is opened, and cryogenic fluid pump 7 and external system cooling water pump stop, and the low-temperature water heating come from air conditioner user exchanges heat into evaporator 5
In pipe, the heat of condensation of the cryogen water vapour produced by the heat dilute solution of heat exchange pipe external surface direct combustion high pressure generator 1 is heated, temperature
Heating user is sent to after rise, the concentrated solution after direct combustion high pressure generator 1 is concentrated enters the interior cryogen with after condensation of absorber 4
Water mixing becomes weak solution, and being sent to direct combustion high pressure generator 1 by solution pump 6 is circulated and heated again.Due to what is produced
Heating hot water leaving water temperature is limited, and solution temperature is higher, causes exhaust gas temperature also higher, influences the heating thermal efficiency, such as heating heat
Water outlet temperature is at 60 DEG C, and direct combustion high pressure generator exhaust gas temperature is at 155 DEG C or so, and heating efficiency is 93% or so.Particularly
In cold winter, outdoor temperature is low, and chimney just emits white cigarette, both wastes the energy, and environment is polluted again.How to find a kind of effective
Reduce exhaust gas temperature, improve heating efficiency, new direct combustion type lithium bromide absorption cold simple to operate, Hot water units as current
One of important topic of research.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency there is provided a kind of effectively reduction exhaust gas temperature, raising heating efficiency, grasp
Make simple direct-burning type lithium bromide absorption type hot water or cold water unit.
The object of the present invention is achieved like this：A kind of hot and cold water dispenser of energy-efficient direct-burning type lithium bromide absorption type of heating
Group, including direct combustion high pressure generator, low pressure generator, condenser, evaporator, absorber, cryogenic fluid heat exchanger and high temperature
Solution heat exchanger, it is characterised in that：It is molten that the unit adds flue gas heat-exchange unit, heating evaporator, heating absorber, heating
Liquid heat exchanger, heating cryogenic fluid pump and water circulating pump, flue gas heat-exchange unit are arranged on direct combustion high pressure generator smoke exhaust pipe, and heating is steamed
Hair device and heating absorber are arranged in same cavity, and are placed on higher than evaporator and absorber components position, in unit
Hot water line all the way is set up on hot water or cold water's inlet tube, the road hot water enters in heating absorber heat exchanging pipe, and in the hot water line
Upper setting heating hot water switching valve, the water that this Lu Shuiyu enters evaporator is in parallel, go out heating absorber hot water access unit it is cold,
Hot water outlet；Weak solution pipeline all the way is set up on the solution pump discharge pipe of unit, the road weak solution is through heating solution heat exchange
Device cooling enters heating absorber spray, and the setting heating weak solution switching valve on the weak solution pipeline；In heating absorber
Weak solution is changed into the lower weak solution of concentration after absorbing cryogenic coolant steam, by height level difference through heating solution heat exchanger liter
Temperature enters absorber cylinder body bottom；Cryogenic coolant water supplement pipeline, the road low temperature all the way are set up in the evaporator liquid capsule of unit
Water as refrigerant is used as cryogenic coolant water moisturizing into heating evaporator liquid capsule；Heating cryogenic fluid pump is by low temperature cold in heating evaporator liquid capsule
Agent water extracts spray out and arrives heating evaporator heat exchange pipe surface, and absorption flows through heat-transfer pipe interior circulation hydro-thermal amount, is vaporizated into cryogenic coolant
Steam, recirculated water temperature after heat is released is reduced, and recirculated water is squeezed into flue gas heat-exchange unit and the high pressure of direct combustion by water circulating pump
The flue gas heat exchange that raw device comes out, circulating water temperature rise, which enters in heating heat exchange pipe of evaporator, to be continued to heat cryogenic coolant water, cigarette
Discharged after the reduction of gas heat recovery temperature.
The beneficial effects of the invention are as follows：
The present invention creates low-temperature receiver one lower than smog discharge temperature, has not only reclaimed flue gas by above-mentioned flow
Sensible heat, also reclaimed the latent heat of water vapour in flue gas, exhaust gas temperature is down to normal temperature, heating efficiency is greatly improved.For example：System
Heating hot water outlet temperature is taken at 60 DEG C or so, heating evaporator and heating absorber cavity internal pressure in 25mmHg or so,
Circulating water temperature into flue gas heat-exchange unit is at 27 DEG C or so, and the exhaust gas temperature of unit is reduced to less than 35 DEG C, with conventional direct combustion
155 DEG C of type unit exhaust gas temperature is compared, the heat of condensation of water vapour in the sensible heat and flue gas of many 120 DEG C of temperature difference of recovered flue gas, than with
13% or so is improved toward combustion natural gas direct fired machine energy utilization rate, heating efficiency reaches 106% or so.Unit heating capacity is not
In the case of change, fuel consumption is greatly decreased, and reduces operating cost, has reached energy-efficient purpose, while having prevented winter
Heating chimney emits the phenomenon of white cigarette, reduces thermal pollution of the smoke evacuation to environment, protects environment.Unit operation of the present invention is simple.
Brief description of the drawings
Fig. 1 is conventional direct-burning type lithium bromide absorption type hot water or cold water unit heat supply schematic flow sheet.
The energy-efficient direct-burning type lithium bromide absorption type hot water or cold water unit heat supply schematic flow sheet of Fig. 2 heating of the present invention.
Reference：
Direct combustion high pressure generator 1
High-temperature solution heat exchanger 2
Cryogenic fluid heat exchanger 3
Absorber 4
Evaporator 5
Solution pump 6
Cryogenic fluid pump 7
Condenser 8
Low pressure generator 9
Heating concentrated solution switching valve 10
Heating refrigerant vapour switching valve 11
Solution pump discharge pipe 12
Absorber cylinder body bottom 13
Evaporator liquid capsule 14
Hot water or cold water's inlet tube 15
Hot water or cold water's outlet 16
Flue gas heat-exchange unit 17
Heating absorber 19
Heating heat exchanger 20
Heating cryogenic fluid pump 21
Heating weak solution switching valve 22
Cryogenic coolant water supplements pipeline 23
Heating hot water switching valve 24
Water circulating pump 25
Heating evaporator 26
Heating evaporator liquid capsule 27.
Embodiment
As shown in Fig. 2 on the basis of conventional direct-burning type lithium bromide absorption type hot water or cold water unit such as Fig. 1, being additionally arranged flue gas
Heat exchanger 17, heating evaporator 26, heating absorber 19, heating solution heat exchanger 20, heating cryogenic fluid pump 21 and water circulating pump
25, flue gas heat-exchange unit 17 is arranged on the smoke exhaust pipe of direct combustion high pressure generator 1, and heating evaporator 26 and heating absorber 19 are arranged on
In same cavity, and it is placed on higher than evaporator 5 and the component locations of absorber 4.Set up on hot water or cold water's inlet tube 15 of unit
Hot water line all the way, the road hot water enters in the heat exchanger tube of heating absorber 19, and sets heating hot water to cut on the hot water line
Valve 24 is changed, the water that this Lu Shuiyu enters evaporator 5 is in parallel, go out the hot water or cold water outlet of the hot water of heating absorber 19 access unit.
Set up weak solution pipeline all the way on the solution pump discharge pipe 12 of unit, the road weak solution through heating solution heat exchanger 20 cool into
Enter heating absorber 19 to spray, and heating weak solution switching valve 22 is set on the weak solution pipeline, this road weak solution is with entering
The weak solution of direct combustion high pressure generator 1 is in parallel.Weak solution is changed into concentration more after absorbing cryogenic coolant steam in heating absorber 19
Low weak solution, enters absorber cylinder body bottom 13, in unit by height level difference through the heating of heating solution heat exchanger 20
Cryogenic coolant water supplement pipeline 23 all the way is set up in evaporator liquid capsule 14, the road water as refrigerant enters the conduct of heating evaporator liquid capsule 27
Cryogenic coolant water moisturizing.Heating cryogenic fluid pump 21 extracts cryogenic coolant water in heating evaporator liquid capsule 27 out spray and arrives heating evaporator
26 heat exchanger tube surface vaporizations；Recirculated water is squeezed into the cigarette that flue gas heat-exchange unit 17 comes out with direct combustion high pressure generator 1 by water circulating pump 25
Gas is exchanged heat, and heat release in the heat exchanger tube of heating evaporator 26 is entered after heating.
When heating operating mode is run, conventional heating circulation process is still normally run, cryogenic fluid pump 7 and external system cooling water pump
Stop, heating concentrated solution switching valve 10 and heating refrigerant vapour switching valve 11 are opened, and solution pump 6 starts, and the heating newly established is dilute
Solution switching valve 22 and heating hot water switching valve 24 are opened, heating cryogenic fluid pump 21 and water circulating pump 25 start.From solution pump discharge
Weak solution is divided into two tunnels, and weak solution is concentrated into direct combustion high pressure generator 1 all the way, and another road weak solution is through heating solution heat exchange
The cooling of device 20 enters heating absorber 19 and sprayed；The low-temperature water heating come from heating user is divided into two tunnels, and low-temperature water heating enters all the way
In the heat exchanger tube of evaporator 5, by the solidifying of the high temperature refrigerant vapour of the heat dilute solution of heat exchange pipe external surface direct combustion high pressure generator 1 generation
Knot heat heating, another road low-temperature water heating enters in the heat exchanger tube of heating absorber 19, is sprayed and inhaled in heat exchange pipe external surface weak solution
Receive from the heating of the cryogenic coolant steam liberated heat of heating evaporator 26, two-way hot water temperature rise, which is merged together, to be sent to
Heating user, the concentrated solution after direct combustion high pressure generator 1 is concentrated enters the cryogen overflowed in absorber 4 and after the condensation of evaporator 5
Water mixing becomes weak solution in weak solution, heating absorber 19 and is changed into the lower weak solution of concentration after absorbing cryogenic coolant steam,
Enter absorber cylinder body bottom 13 through the heating of heating solution heat exchanger 20 by height level pressure difference to mix with weak solution in absorber 4
Close, solution pump 6 will wherein weak solution be sent to direct combustion high pressure generator 1 and be circulated and heated again concentration all the way, by another road
Weak solution is sent to after heating solution heat exchanger 20 cools and circulates and absorb cryogenic coolant steam again into heating absorber 19.
Cryogenic coolant water in heating evaporator liquid capsule 27 is extracted out and sprayed and exchanged heat pipe surface in heating evaporator 26 by heating cryogenic fluid pump 21,
Absorption flows through heat-transfer pipe interior circulation hydro-thermal amount and is vaporizated into cryogenic coolant steam, and recirculated water temperature after heat is released is reduced, by following
Recirculated water is squeezed into the flue gas heat exchange that flue gas heat-exchange unit 17 comes out with direct combustion high pressure generator 1, circulating water temperature liter by ring water pump 25
Height, which enters heating evaporator 26, to be continued to heat cryogenic coolant water, is discharged after the reduction of flue gas heat recovered temperature.Heating absorber 19
Interior solution continuous absorption cryogenic coolant steam makes cavity internal pressure be maintained at certain value, and vaporization absorption process is with regard to constantly progress.
The water as refrigerant moisturizing of heating evaporator 26 is by the pressure differential between evaporator 5 and the cavity of heating evaporator 26 from evaporator liquid capsule 14 through low
Warm water as refrigerant supplement pipeline 23 enters heating evaporator liquid capsule 27, constantly gives the moisturizing of heating evaporator 26.
When cooling condition is run, by heating concentrated solution switching valve 10, heating refrigerant vapour switching valve 11, heating weak solution
Switching valve 22, the Close All of heating hot water switching valve 24, heating cryogenic fluid pump 21 and water circulating pump 25 stop, flue gas heat-exchange unit 17,
Heating evaporator 26, heating absorber 19 and heating solution heat exchanger 20 stop circulation, and unit still presses conventional kind of refrigeration cycle
Process flow operation.
Heating evaporator 26 and the housing of heating absorber 19 can be independently arranged in above scheme, can also evaporate heating
Device 26 and heating absorber 19 are arranged in low pressure generator 9 and the housing of condenser 8, are separated with dividing plate between them, and heating is steamed
Device 26 and heating absorber 19 are sent out in same cavity, low pressure generator 9 and condenser 8 are in same cavity.
It can be single hop that above scheme, which is applied to evaporator 5, absorber 4,（Shown in figure）, can also be two sections or multistage,
Cooling water can be parallel-connection flow（Shown in figure）It can also be serial flow.
Claims (4)
1. a kind of heating direct-burning type lithium bromide absorption type hot water or cold water's unit, including direct combustion high pressure generator（1）, low pressure generator
（9）, condenser（8）, evaporator（5）, absorber（4）, cryogenic fluid heat exchanger（3）And high-temperature solution heat exchanger（2）, its
It is characterised by：The unit adds flue gas heat-exchange unit（17）, heating evaporator（26）, heating absorber（19）, heating solution
Heat exchanger（20）, heating cryogenic fluid pump（21）And water circulating pump（25）, flue gas heat-exchange unit（17）It is arranged on direct combustion high pressure generator
（1）On smoke exhaust pipe, heating evaporator（26）With heating absorber（19）It is arranged in same cavity, and is placed on higher than evaporator
（5）And absorber（4）Component locations；In hot water or cold water's inlet tube of unit（15）On set up hot water line all the way, the road hot water enters
Enter heating absorber（19）In heat exchanger tube, and the setting heating hot water switching valve on the hot water line（24）, go out heating absorber
（19）The hot water or cold water outlet of hot water access unit；In the solution pump discharge pipe of unit（12）On set up weak solution pipeline all the way, should
Road weak solution is through heating solution heat exchanger（20）Cooling enters heating absorber（19）Spray, and set on the weak solution pipeline
Put heating weak solution switching valve（22）, heating absorber（19）It is changed into concentration after interior weak solution absorption cryogenic coolant steam lower
Weak solution, by height level difference through heating solution heat exchanger（20）Heating enters absorber cylinder body bottom（13）；In unit
Evaporator liquid capsule（14）On set up all the way cryogenic coolant water supplement pipeline（23）, the road water as refrigerant enter heating evaporator liquid capsule
（27）It is used as cryogenic coolant water moisturizing；Heating cryogenic fluid pump（21）By heating evaporator liquid capsule（27）Interior cryogenic coolant water extracts spray out
To heating evaporator（26）Heat exchanger tube surface vaporization；Water circulating pump（25）Recirculated water is squeezed into flue gas heat-exchange unit（17）Heating is laggard
Enter heating evaporator（26）Heat release in heat exchanger tube.
2. a kind of heating direct-burning type lithium bromide absorption type hot water or cold water's unit according to claim 1, it is characterised in that：Institute
State unit heating evaporator（26）With heating absorber（19）Housing is independently arranged, or by heating evaporator（26）Absorbed with heating
Device（19）It is arranged on low pressure generator（9）And condenser（8）Separated in housing, between them with dividing plate, heating evaporator（26）
With heating absorber（19）It is arranged in same cavity, low pressure generator（9）And condenser（8）It is arranged in same cavity.
3. a kind of heating direct-burning type lithium bromide absorption type hot water or cold water's unit according to claim 1 or 2, it is characterised in that：
The evaporator of the unit（5）And absorber（4）It is single hop or multistage.
4. a kind of heating direct-burning type lithium bromide absorption type hot water or cold water's unit according to claim 1 or 2, it is characterised in that：
The cooling water of the unit is parallel-connection flow or serial flow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985482.5A CN105423595B (en) | 2015-12-25 | 2015-12-25 | A kind of energy-efficient direct-burning type lithium bromide absorption type hot water or cold water unit of heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985482.5A CN105423595B (en) | 2015-12-25 | 2015-12-25 | A kind of energy-efficient direct-burning type lithium bromide absorption type hot water or cold water unit of heating |
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| CN105423595A CN105423595A (en) | 2016-03-23 |
| CN105423595B true CN105423595B (en) | 2017-09-08 |
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| CN108019980A (en) * | 2017-03-07 | 2018-05-11 | 林振娴 | A kind of computational methods of definite direct combustion type lithium bromide refrigerator thermodynamic property |
| CN108489142B (en) * | 2018-04-09 | 2024-03-22 | 双良节能***股份有限公司 | Environment-friendly efficient direct-fired lithium bromide absorption type cold and hot water unit system |
| CN108518885B (en) * | 2018-04-09 | 2024-03-08 | 双良节能***股份有限公司 | Environment-friendly efficient smoke hot water type lithium bromide absorption type cold and hot water unit |
| CN108362035B (en) * | 2018-04-09 | 2024-01-05 | 双良节能***股份有限公司 | White smoke-eliminating efficient direct-fired lithium bromide absorption type cold and hot water unit system |
| CN108397931B (en) * | 2018-04-09 | 2023-12-15 | 双良节能***股份有限公司 | Environment-friendly, efficient and energy-saving direct-fired lithium bromide absorption type cold and hot water unit |
| CN110307662B (en) * | 2019-07-08 | 2023-12-22 | 双良节能***股份有限公司 | Lithium bromide absorption unit for direct-fired heat pump and hot water type refrigeration |
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