CN211261347U - Low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit - Google Patents
Low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit Download PDFInfo
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- CN211261347U CN211261347U CN201922166465.5U CN201922166465U CN211261347U CN 211261347 U CN211261347 U CN 211261347U CN 201922166465 U CN201922166465 U CN 201922166465U CN 211261347 U CN211261347 U CN 211261347U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 153
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 64
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 36
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000003546 flue gas Substances 0.000 claims abstract description 44
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims description 29
- 239000000498 cooling water Substances 0.000 claims description 15
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010977 unit operation Methods 0.000 abstract description 4
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model relates to a low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit, which belongs to the technical field of air conditioning equipment. A hot water heat exchanger (17) is additionally arranged; a hot water heat exchanger water inlet pipe (29) of the hot water heat exchanger (17) is connected with an evaporator water inlet pipe (31) of the self evaporator (1), and a valve II (30) is arranged on the pipe; a hot water heat exchanger water outlet pipe (26) of the hot water heat exchanger (17) is connected to an evaporator water outlet pipe (28) of the evaporator (1), and a valve I (27) is arranged on the pipe; the solution flow of the flue gas heat exchanger (14) and the refrigerant water heat exchanger (20) is a series flow. The low-temperature flue gas heat exchanger can reduce the temperature of dilute solution entering the flue gas heat exchanger during the heat supply operation of the unit, thereby reducing the temperature of the flue gas discharged by the unit to be below 80 ℃, fully recycling the low-temperature flue gas heat, improving the COP (coefficient of performance) of heat supply to be more than 0.962, and ensuring higher economical efficiency of the unit operation and lower heat supply energy consumption.
Description
Technical Field
The utility model relates to a low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit, which belongs to the technical field of air conditioning equipment.
Background
The prior direct-combustion lithium bromide absorption cold and hot water unit consists of an evaporator, an absorber, a direct-combustion high-pressure generator, a low-pressure generator, a condenser, a high-temperature heat exchanger, a low-temperature heat exchanger, a flue gas heat exchanger, a refrigerant-water heat exchanger, a solution pump, a refrigerant pump, a control system, pipelines and valves for connecting all the parts, wherein the cooling water flow of the unit is a series flow; the flue gas heat exchanger is arranged on a smoke exhaust pipe of the direct-fired high-pressure generator, and the refrigerant water heat exchanger is arranged on a high-temperature refrigerant water pipe between the low-pressure generator and the condenser.
When the unit is in refrigeration operation, part of the low-temperature dilute solution delivered by the solution pump enters the refrigerant water heat exchanger through the liquid inlet pipe of the refrigerant water heat exchanger to exchange heat with high-temperature refrigerant water, so that part of heat of the high-temperature refrigerant water is recycled. The dilute solution of the refrigerant-outlet water heat exchanger enters the flue gas heat exchanger through the liquid inlet pipe of the flue gas heat exchanger to exchange heat with the flue gas discharged by the direct-fired high-pressure generator, so that the temperature of the flue gas can be reduced to about 100 ℃, and the coefficient of performance (COP) of the unit is higher.
When the unit is in heating operation, the refrigerant-water heat exchanger does not work and only serves as a solution circulation channel, at the moment, because the temperature of the dilute solution in the absorber is higher (about 100 ℃), the dilute solution is conveyed by the solution pump and enters the flue gas heat exchanger through the liquid inlet pipe of the flue gas heat exchanger, and after heat exchange with flue gas, the temperature of the flue gas can only be reduced to about 120 ℃, the heat of low-temperature flue gas cannot be fully recycled, and the coefficient of performance of heat supply COP is about 0.942.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of proposing among the above-mentioned background problem, provide a low emission high energy efficiency direct combustion type lithium bromide absorption formula cold and hot water unit, it can reduce the rare solution temperature that gets into gas heater when unit heat supply moves to reduce unit exhaust gas temperature below 80 ℃, make low temperature flue gas heat obtain abundant recycle, heat supply performance coefficient COP improves more than 0.962, unit operation economic nature is higher, and the heat supply energy consumption is lower.
The purpose of the utility model is realized like this: a low-emission high-energy-efficiency direct-combustion lithium bromide absorption cold and hot water unit comprises an evaporator, an absorber, a direct-combustion high-pressure generator, a low-pressure generator, a condenser, a high-temperature heat exchanger, a low-temperature heat exchanger, a flue gas heat exchanger, a refrigerant-water heat exchanger, a solution pump, a refrigerant pump and a hot water heat exchanger;
a water inlet pipe of the hot water heat exchanger is connected with a water inlet pipe of an evaporator of the self-evaporator, and a valve II is arranged on the pipe;
a water outlet pipe of the hot water heat exchanger is connected to a water outlet pipe of an evaporator of the evaporator, and a valve I is arranged on the pipe;
the solution flow of the flue gas heat exchanger and the refrigerant water heat exchanger is a series flow.
The hot water heat exchanger is arranged on a liquid inlet pipe of the flue gas heat exchanger;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a series flow.
The hot water heat exchanger is arranged on a liquid inlet pipe of the flue gas heat exchanger;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a parallel flow.
The hot water heat exchanger is arranged on a liquid inlet pipe of the refrigerant water heat exchanger;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a series flow.
The hot water heat exchanger is arranged on a liquid inlet pipe of the refrigerant water heat exchanger;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a parallel flow.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses a low emission high energy efficiency direct combustion type lithium bromide absorption formula cold and hot water unit, the hot water heat exchanger has been added, when the unit heat supply operation, partly hot water entering hot water heat exchanger through the evaporimeter inlet tube entering unit, with getting into hot water heat exchanger, the temperature is about 100 ℃ weak solution carries out the heat exchange, cool off the weak solution, the weak solution exit temperature who makes hot water heat exchanger (being the weak solution import temperature of gas heater) reduces below 60 ℃, thereby reduce the unit exhaust gas temperature below 80 ℃, make low temperature gas fume heat obtain abundant recycle, heat supply performance coefficient COP improves more than 0.962, unit operation economic nature is higher, the heat supply energy consumption is lower.
Drawings
Fig. 1 is a schematic structural view of a conventional direct-combustion lithium bromide absorption cold and hot water unit.
Fig. 2 is a schematic structural diagram of an embodiment 1 of a low-emission high-energy-efficiency direct-combustion lithium bromide absorption type cold and hot water unit according to the present invention.
Fig. 3 is a schematic structural diagram of an embodiment 2 of a low-emission high-energy-efficiency direct-combustion lithium bromide absorption type cold and hot water unit according to the present invention.
Fig. 4 is a schematic structural diagram of embodiment 3 of a low-emission high-energy-efficiency direct-combustion lithium bromide absorption type cold and hot water unit according to the present invention.
Fig. 5 is a schematic structural diagram of an embodiment 4 of a low-emission high-energy-efficiency direct-combustion lithium bromide absorption type cold and hot water unit according to the present invention.
Wherein:
an evaporator 1, an absorber 2, a solution pump outlet pipe 3, a solution switching valve 4, a low-temperature heat exchanger dilute solution inlet pipe 5, a low-temperature heat exchanger 6, a high-temperature heat exchanger 7, a refrigerant-water heat exchanger liquid inlet pipe 8, a burner 9, a high-pressure liquid outlet pipe 10, a direct-fired high-pressure generator 11, a high-pressure liquid outlet pipe 12, a flue gas heat exchanger liquid outlet pipe 13, a flue gas heat exchanger 14, a smoke exhaust pipe 15, a flue gas heat exchanger liquid inlet pipe 16 and a hot water heat exchanger 17, the system comprises a hot water heat exchanger liquid inlet pipe 18, a refrigerant steam pipe 19, a refrigerant water heat exchanger 20, a steam switching valve 21, a high-temperature refrigerant water pipe 22, a low-pressure generator 23, a condenser 24, a cooling water outlet pipe 25, a hot water heat exchanger water outlet pipe 26, a valve I27, an evaporator water outlet pipe 28, a hot water heat exchanger water inlet pipe 29, a valve II 30, an evaporator water inlet pipe 31, a solution pump 32, a refrigerant pump 33 and a cooling water inlet pipe 34.
Detailed Description
The invention is described below with reference to the accompanying drawings and specific embodiments:
example 1:
as shown in fig. 2, a low-emission high-energy-efficiency direct-combustion lithium bromide absorption cold and hot water unit comprises an evaporator 1, an absorber 2, a direct-combustion high-pressure generator 11, a low-pressure generator 23, a condenser 24, a high-temperature heat exchanger 7, a low-temperature heat exchanger 6, a flue gas heat exchanger 14, a refrigerant-water heat exchanger 20, a solution pump 32, a refrigerant pump 33, and a hot-water heat exchanger 17;
a hot water heat exchanger water inlet pipe 29 of the hot water heat exchanger 17 is connected with an evaporator water inlet pipe 31 of the self evaporator 1, and a valve II 30 is arranged on the pipe;
a hot water heat exchanger water outlet pipe 26 of the hot water heat exchanger 17 is connected to an evaporator water outlet pipe 28 of the evaporator 1, and a valve I27 is arranged on the pipe;
the solution flow of the flue gas heat exchanger 14 and the refrigerant water heat exchanger 20 is a series flow.
The hot water heat exchanger 17 is arranged on a liquid inlet pipe 16 of the flue gas heat exchanger 14;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a series flow.
In the embodiment, the flue gas heat exchanger 14 is arranged on the smoke exhaust pipe 15 of the direct-fired high-pressure generator 11, the refrigerant water heat exchanger 20 is arranged on the high-temperature refrigerant water pipe 22 between the low-pressure generator 23 and the condenser 24, and the hot water heat exchanger 17 is arranged on the flue gas heat exchanger liquid inlet pipe 16 of the flue gas heat exchanger 14;
a hot water heat exchanger water inlet pipe 29 of the hot water heat exchanger 17 is connected with a self-evaporator water inlet pipe 31, and a valve II 30 is arranged on the pipe; a hot water heat exchanger water outlet pipe 26 of the hot water heat exchanger 17 is connected to an evaporator water outlet pipe 28, and a valve I27 is arranged on the pipe; a solution switching valve 4 is installed on a pipe between the high emission liquid pipe 10 and the absorber 2, and a steam switching valve 21 is installed on a pipe between the refrigerant steam pipe 19 and the evaporator 1.
In this embodiment, the working principle of the low-emission high-energy-efficiency direct-combustion lithium bromide absorption cold and hot water unit of the present invention is as follows:
when the unit operates in a refrigerating mode, the solution switching valve 4, the steam switching valve 21, the valve I27 and the valve II 30 are closed, and the hot water heat exchanger 17 does not work and only serves as a solution circulation channel; part of the low-temperature dilute solution conveyed by the solution pump 32 enters the refrigerant-water heat exchanger 20 through the liquid inlet pipe 8 of the refrigerant-water heat exchanger to exchange heat with high-temperature refrigerant water, so that part of heat of the high-temperature refrigerant water is recycled; the dilute solution of the refrigerant-outlet water heat exchanger 20 enters the flue gas heat exchanger 14 through the hot water heat exchanger liquid inlet pipe 18, the hot water heat exchanger 17 and the flue gas heat exchanger liquid inlet pipe 16, exchanges heat with the flue gas discharged by the direct-fired high-pressure generator 11, and can reduce the temperature of the flue gas to about 100 ℃.
When the unit supplies heat, the solution switching valve 4, the steam switching valve 21, the valve I27 and the valve II 30 are opened, the low-pressure generator 23, the condenser 24, the refrigerant water heat exchanger 20, the high-temperature heat exchanger 7 and the low-temperature heat exchanger 6 do not work, and the refrigerant water heat exchanger 20, the high-temperature heat exchanger 7 and the low-temperature heat exchanger 6 are only used as solution circulation channels; the high-temperature dilute solution with the temperature of about 100 ℃ is conveyed by the solution pump 32, one part of the high-temperature dilute solution enters the hot water heat exchanger 17 through the liquid inlet pipe 8 of the refrigerant water heat exchanger, the refrigerant water heat exchanger 20 and the liquid inlet pipe 18 of the hot water heat exchanger, and enters the hot water heat exchanger through the water inlet pipe 31 of the evaporator and the water inlet pipe 29 of the hot water heat exchanger, and hot water with the temperature of about 50 ℃ is subjected to heat exchanger to cool the high-temperature dilute solution, so that the temperature of the dilute solution outlet of the hot water heat exchanger 17 is; the dilute solution from the hot water heat exchanger 17 enters the flue gas heat exchanger 14 through the flue gas heat exchanger liquid inlet pipe 16, exchanges heat with the flue gas discharged by the direct-fired high-pressure generator 11, reduces the unit exhaust gas temperature to below 80 ℃, fully recycles the low-temperature flue gas heat, improves the heat supply coefficient COP to be above 0.962, and has higher unit operation economy and lower heat supply energy consumption.
Example 2:
as shown in fig. 3, in the present embodiment, the hot water heat exchanger 17 is disposed on the flue gas heat exchanger liquid inlet pipe 16 of the flue gas heat exchanger 14;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a parallel flow.
Example 3:
as shown in fig. 4, in the present embodiment, the hot water heat exchanger 17 is disposed on the refrigerant water heat exchanger liquid inlet pipe 8 of the refrigerant water heat exchanger 20;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a series flow.
Because the solution pipelines of the refrigerant water heat exchanger 20 and the flue gas heat exchanger 14 are in a series connection structure, the working principle and the effect of the unit in the embodiment are the same as those of the unit in the embodiment 1.
Example 4:
as shown in fig. 5, in the present embodiment, the hot water heat exchanger 17 is disposed on the refrigerant water heat exchanger liquid inlet pipe 8 of the refrigerant water heat exchanger 20;
the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a parallel flow.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a low high energy efficiency direct combustion type lithium bromide absorption formula cold and hot water unit that discharges, includes evaporimeter (1), absorber (2), direct combustion type high pressure generator (11), low pressure generator (23), condenser (24), high temperature heat exchanger (7), low temperature heat exchanger (6), gas heat exchanger (14), cryogen water heat exchanger (20), solution pump (32) and cryogen pump (33), its characterized in that:
a hot water heat exchanger (17) is added;
a hot water heat exchanger water inlet pipe (29) of the hot water heat exchanger (17) is connected with an evaporator water inlet pipe (31) of the self evaporator (1), and a valve II (30) is arranged on the pipe;
a hot water heat exchanger water outlet pipe (26) of the hot water heat exchanger (17) is connected to an evaporator water outlet pipe (28) of the evaporator (1), and a valve I (27) is arranged on the pipe;
the solution flow of the flue gas heat exchanger (14) and the refrigerant water heat exchanger (20) is a series flow.
2. The low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit according to claim 1, wherein: the hot water heat exchanger (17) is arranged on a liquid inlet pipe (16) of the flue gas heat exchanger (14); the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a series flow.
3. The low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit according to claim 1, wherein: the hot water heat exchanger (17) is arranged on a liquid inlet pipe (16) of the flue gas heat exchanger (14); the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a parallel flow.
4. The low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit according to claim 1, wherein: the hot water heat exchanger (17) is arranged on a refrigerant water heat exchanger liquid inlet pipe (8) of the refrigerant water heat exchanger (20); the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a series flow.
5. The low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit according to claim 1, wherein: the hot water heat exchanger (17) is arranged on a refrigerant water heat exchanger liquid inlet pipe (8) of the refrigerant water heat exchanger (20); the cooling water flow of the low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit adopts a parallel flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922166465.5U CN211261347U (en) | 2019-12-06 | 2019-12-06 | Low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922166465.5U CN211261347U (en) | 2019-12-06 | 2019-12-06 | Low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit |
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| CN211261347U true CN211261347U (en) | 2020-08-14 |
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| CN201922166465.5U Active CN211261347U (en) | 2019-12-06 | 2019-12-06 | Low-emission high-energy-efficiency direct-combustion type lithium bromide absorption cold and hot water unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986421A (en) * | 2019-12-06 | 2020-04-10 | 双良节能系统股份有限公司 | A low-emission, high-energy-efficiency direct-fired lithium bromide absorption cold and hot water unit |
-
2019
- 2019-12-06 CN CN201922166465.5U patent/CN211261347U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986421A (en) * | 2019-12-06 | 2020-04-10 | 双良节能系统股份有限公司 | A low-emission, high-energy-efficiency direct-fired lithium bromide absorption cold and hot water unit |
| CN110986421B (en) * | 2019-12-06 | 2025-02-14 | 双良节能系统股份有限公司 | A low-emission, high-efficiency, direct-fired lithium bromide absorption chiller and hot water unit |
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