CN219868238U - Wind-water linkage energy-saving system of common ventilation air conditioning system of subway station - Google Patents
Wind-water linkage energy-saving system of common ventilation air conditioning system of subway station Download PDFInfo
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- CN219868238U CN219868238U CN202320558604.2U CN202320558604U CN219868238U CN 219868238 U CN219868238 U CN 219868238U CN 202320558604 U CN202320558604 U CN 202320558604U CN 219868238 U CN219868238 U CN 219868238U
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- water
- water chilling
- temperature sensor
- chilling unit
- ventilation
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 141
- 238000009423 ventilation Methods 0.000 title claims abstract description 41
- 238000004378 air conditioning Methods 0.000 title claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 abstract description 11
- 239000000498 cooling water Substances 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000007704 transition Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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- Air Conditioning Control Device (AREA)
Abstract
The utility model discloses a wind-water linkage energy-saving system of a common ventilation air-conditioning system of a subway station, which comprises a water supply system, a ventilation system and a surface cooler, wherein the water supply system is connected with the surface cooler through a water return pipe and a water inlet pipe to form a circulating waterway, and the ventilation system is connected with the surface cooler through a ventilation pipe; the water supply system comprises a plurality of first water chilling units and second water chilling units which are arranged in parallel; the refrigeration power of the first water chilling unit is larger than that of the second water chilling unit; a backwater temperature sensor is arranged on the backwater pipe; a water inlet temperature sensor is arranged on the water inlet pipe; the utility model realizes corresponding operation control around the lowest energy consumption, and for the corresponding load condition under a certain specific condition during operation, the water supply system can realize accurate control of the optimal cooling water backwater temperature and the optimal cooling water flow rate, so that the whole energy consumption of the whole system is the lowest.
Description
Technical Field
The utility model relates to the technical field related to subway ventilation, in particular to a wind-water linkage energy-saving system of a common ventilation air conditioning system of a subway station.
Background
In engineering design, the equipment capacity of the ventilation air-conditioning system is generally determined according to the maximum load of the subway operation in a long term, and a certain design allowance is reserved. However, through analysis of subway station load, it is found that in the actual running process of the equipment, the air conditioner load often does not reach the maximum load, and even is much smaller, and a larger margin exists. If the subway ventilation air conditioning system runs for a long time according to the design capacity, the subway ventilation air conditioning system cannot be regulated and controlled in real time according to the load demand, and great energy waste is necessarily caused; therefore, how to introduce efficient energy-saving control technology and equipment, reduce the energy consumption of a ventilation air conditioning system and reduce the operation cost is a problem to be solved urgently in subway energy-saving work.
Disclosure of Invention
The utility model provides a wind-water linkage energy-saving system of a common ventilation air conditioning system of a subway station, which aims to solve the defect that the subway ventilation air conditioning system in the prior art runs for a long time according to the design capacity, cannot be regulated and controlled in real time according to the load demand and inevitably causes great energy waste.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model relates to a wind-water linkage energy-saving system of a common ventilation air-conditioning system of a subway station, which comprises a water supply system, a ventilation system and a surface cooler, wherein the water supply system is connected with the surface cooler through a water return pipe and a water inlet pipe to form a circulating water path, and the ventilation system is connected with the surface cooler through a ventilation pipe; the water supply system comprises a plurality of first water chilling units and second water chilling units which are arranged in parallel; the refrigeration power of the first water chilling unit is larger than that of the second water chilling unit; a backwater temperature sensor is arranged on the backwater pipe; a water inlet temperature sensor is arranged on the water inlet pipe; the system also comprises an outdoor temperature sensor, an indoor temperature sensor and a PLC controller; the first water chilling unit, the second water chilling unit, the backwater temperature sensor, the ventilation system and the water inlet temperature sensor are all connected with the PLC.
As a preferable technical scheme of the utility model, the utility model further comprises a carbon dioxide sensor for detecting the concentration of carbon dioxide in the station; the carbon dioxide sensor is connected with the PLC.
As a preferable technical scheme of the utility model, two first water chilling units are arranged, and when the indoor temperature meets the requirement, the two first water chilling units are alternately used.
As a preferable technical scheme of the utility model, when the outdoor temperature sensor detects that the outdoor temperature is lower than twenty-five ℃, plc controls the first water chilling unit and the second water chilling unit to stop.
As a preferable technical scheme of the utility model, when the indoor temperature sensor detects that the indoor temperature of the station is lower than twenty-four ℃, plc controls the first water chilling unit and the second water chilling unit to stop.
The beneficial effects of the utility model are as follows:
the wind-water linkage energy-saving system of the common ventilation air-conditioning system of the subway station comprises a water supply system, a ventilation system and a surface cooler; the water supply system comprises a plurality of first water chilling units and second water chilling units which are arranged in parallel; in a transition season with lower air temperature, only the second water chilling unit with lower refrigeration power is started; when the air temperature is high, only one first water chilling unit is started to refrigerate; when the first water chilling unit singly refrigerates and cannot meet the refrigeration requirement, the second water chilling unit is started and runs by adopting a large unit and a small unit; the utility model controls the running states of the first water chilling unit and the second water chilling unit, thereby playing the role of energy conservation according to the practical requirements of different seasons; and detecting the backwater temperature and the water inlet temperature; the utility model realizes corresponding operation control around the lowest energy consumption, and for the corresponding load condition under a certain specific condition during operation, the water supply system can realize accurate control of the optimal cooling water backwater temperature and the optimal cooling water flow rate, so that the whole energy consumption of the whole system is the lowest.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a wind-water linkage energy-saving system of a common ventilation air conditioning system of a subway station.
In the figure: 1. a water supply system; 101. a first water chiller; 102. a second water chiller; 2. a ventilation system; 3. a surface cooler; 4. a water return pipe; 5. a water inlet pipe; 6. a ventilation pipe; 7. a backwater temperature sensor; 8. a water inlet temperature sensor; 9. an outdoor temperature sensor; 10. an indoor temperature sensor; 11. a PLC controller; 12. a carbon dioxide sensor.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Examples: as shown in fig. 1, the wind-water linkage energy-saving system of the common ventilation air conditioning system of the subway station comprises a water supply system 1, a ventilation system 2 and a surface cooler 3, wherein the water supply system 1 is connected with the surface cooler 3 through a water return pipe 4 and a water inlet pipe 5 to form a circulating water path, and the ventilation system 2 is connected with the surface cooler 3 through a ventilation pipe 6; the water supply system 1 is characterized by comprising a plurality of first water chilling units 101 and second water chilling units 102 which are arranged in parallel; the refrigeration power of the first water chilling unit 101 is larger than that of the second water chilling unit 102; a backwater temperature sensor 7 is arranged on the backwater pipe 4; the water inlet pipe 5 is provided with a water inlet temperature sensor 8; also comprises an outdoor temperature sensor 9, an indoor temperature sensor 10 and a PLC controller 11; the first water chilling unit 101, the second water chilling unit 102, the backwater temperature sensor 7, the ventilation system 2 and the water inlet temperature sensor 8 are all connected with the PLC 11. Wherein a water supply system 1, a ventilation system 2 and a surface cooler 3 form a ventilation air-conditioning system; the water supply system 1 comprises a plurality of first water chilling units 101 and second water chilling units 102 which are arranged in parallel; in the transition season with lower air temperature, only the second water chilling unit 102 with lower refrigeration power is started; when the air temperature is high, only one first water chilling unit 101 is started for refrigeration; when the first water chilling unit 101 singly refrigerates and cannot meet the refrigeration requirement, the second water chilling unit 102 is started and runs in a large unit and a small unit; the utility model controls the running states of the first water chilling unit 101 and the second water chilling unit 102, thereby playing a role in saving energy according to the practical requirements of different seasons; and detecting the backwater temperature and the water inlet temperature; the utility model realizes corresponding operation control around the lowest energy consumption, and for the corresponding load condition under a certain specific condition during operation, the water supply system 1 can realize accurate control of the optimal cooling water backwater temperature and the optimal cooling water flow rate, so that the whole energy consumption of the whole system is the lowest.
Wherein, the device also comprises a carbon dioxide sensor 12 for detecting the concentration of carbon dioxide in the station; the carbon dioxide sensor 12 is connected to the PLC controller 11.
The two first water chilling units 101 are provided, and when the indoor temperature meets the requirement, the two first water chilling units 101 are alternately used.
When the outdoor temperature sensor 9 detects that the outdoor temperature is lower than twenty-five ℃, plc controls the first water chiller 101 and the second water chiller 102 to stop.
When the indoor temperature sensor 10 detects that the indoor temperature of the station is lower than twenty-four degrees celsius, plc controls the first water chiller 101 and the second water chiller 102 to stop.
After the large system of the air conditioner season station operates, an outdoor temperature sensor 9 in the system detects that the outdoor temperature is higher than 28 ℃, and an indoor temperature sensor 10 detects that the average temperature of a public area is higher than 26 ℃, a water chilling unit is started. The specific starting-up implementation mode of the water supply system 1 is as follows: (1) The air conditioner quaternary starter unit number is executed according to a date sheet number, the date sheet number starts a No. 1 large unit in the first water chilling unit 101, the date sheet number starts a No. 2 large unit in the first water chilling unit 101, the air conditioner load of stations in transition seasons of 5 months and 10 months with lower air temperature is smaller, and the air conditioner load of stations in the second water chilling unit 102 with lower refrigeration power is started; (2) When the No. 1 or No. 2 unit independently runs and cannot meet the station refrigeration requirement (the unit load reaches 100%, the chilled water outlet temperature is more than 14 ℃ and the duration time reaches 30 minutes), the No. 3 small unit is started; (3) Under the condition that one large unit and one small unit are operated, when the temperature of frozen water is lower than 12.2 ℃ and the total load of the two units is less than 135%, the No. 3 small unit is shut down when the duration time reaches 10 minutes; (4) When the small machine set of transition season 3 cannot meet the station refrigeration requirement (the machine set load reaches 100%, the chilled water outlet temperature is higher than 14 ℃ and the duration time reaches 30 minutes), switching to the large machine set of the corresponding first water chilling unit 101 according to the date sheet double number; (5) When the independent operation load of the No. 1 or No. 2 unit is lower than 50 percent and the duration time reaches 10 minutes, switching to the No. 3 small unit; and (6) switching in time when the equipment fails and stops.
Water chiller shutdown judgment standard: the outdoor temperature is lower than 26 ℃ or the average temperature of the public area is lower than 24 ℃, the water chilling unit is closed, the temperature of the public area is continuously monitored, and when the temperature of the public area is higher than 28 ℃, the chiller is started again.
The temperature difference of the water supply and return of the chilled water is kept at about 5 ℃, and (1) the temperature difference of the water supply and return is lower than 4.5 ℃, and the end heat load is judged to be small, at the moment, the frequency of the chilled water pump is reduced to regulate the flow rate of the chilled water, the output of cold energy is reduced, and the power of the chilled pump and the chiller unit is reduced; (2) When the temperature difference of the water supply and return water is greater than 5.5 ℃, the frequency of the chilled water pump is increased, the lower frequency limit of the chilled water pump needs to be controlled in the adjusting process, the lower frequency limit is determined by the minimum flow requirement of the water chilling unit and the chilled water flow at the end with the least adverse guarantee, and the change frequency of the water pump is tentatively 2Hz. The cooling water pump is controlled by adopting the same principle, and the cooling pump is provided with a corresponding self-adjusting throttle instrument control module through research and analysis, so that on the premise of meeting the optimal COP value of the whole ventilation air conditioning system, relevant parameters of the cooling water, such as the cooling water backwater temperature, the cooling water flow and an energy-saving control calculation model of the circulating water pump, are controlled.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The utility model provides a wind-water linkage economizer system of ventilation air conditioning system commonly used in subway station, includes water supply system (1), ventilation system (2) and surface cooler (3), water supply system (1) are connected with surface cooler (3) through wet return (4), inlet tube (5) and form the circulation water route, ventilation system (2) are connected with surface cooler (3) through ventilation pipe (6); the water supply system (1) is characterized by comprising a plurality of first water chilling units (101) and second water chilling units (102) which are arranged in parallel; the refrigerating power of the first water chilling unit (101) is larger than that of the second water chilling unit (102); a backwater temperature sensor (7) is arranged on the backwater pipe (4); a water inlet temperature sensor (8) is arranged on the water inlet pipe (5); the device also comprises an outdoor temperature sensor (9), an indoor temperature sensor (10) and a PLC (programmable logic controller) 11; the first water chilling unit (101), the second water chilling unit (102), the backwater temperature sensor (7), the ventilation system (2) and the water inlet temperature sensor (8) are connected with the PLC (11).
2. A wind-water linked energy saving system of a ventilation air conditioning system commonly used in subway stations according to claim 1, characterized by further comprising a carbon dioxide sensor (12) for detecting the concentration of carbon dioxide in the station; the carbon dioxide sensor (12) is connected with the PLC (11).
3. The wind-water linkage energy-saving system of the common ventilation air conditioning system of the subway station according to claim 1 is characterized in that two first water chilling units (101) are arranged, and when the indoor temperature meets the requirement, the two first water chilling units (101) are alternately used.
4. The wind-water linkage energy-saving system of the common ventilation air conditioning system of the subway station according to claim 1 is characterized in that when the outdoor temperature sensor (9) detects that the outdoor temperature is lower than twenty-five ℃, plc controls the first water chilling unit (101) and the second water chilling unit (102) to stop.
5. The wind-water linkage energy-saving system of the common ventilation air conditioning system of the subway station according to claim 1 is characterized in that when the indoor temperature sensor (10) detects that the indoor temperature of the station is lower than twenty-four ℃, plc controls the first water chilling unit (101) and the second water chilling unit (102) to stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320558604.2U CN219868238U (en) | 2023-03-21 | 2023-03-21 | Wind-water linkage energy-saving system of common ventilation air conditioning system of subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320558604.2U CN219868238U (en) | 2023-03-21 | 2023-03-21 | Wind-water linkage energy-saving system of common ventilation air conditioning system of subway station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219868238U true CN219868238U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320558604.2U Active CN219868238U (en) | 2023-03-21 | 2023-03-21 | Wind-water linkage energy-saving system of common ventilation air conditioning system of subway station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219868238U (en) |
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2023
- 2023-03-21 CN CN202320558604.2U patent/CN219868238U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240522 Address after: 310000, 12th Floor, Building 3, No. 466 Jiuhe Road, Shangcheng District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Metro Operation Co.,Ltd. Country or region after: China Patentee after: Hangzhou Metro Technology Co.,Ltd. Address before: 310000 No. 5277, Desheng East Road, Shangcheng District, Hangzhou, Zhejiang Patentee before: Hangzhou Metro Operation Co.,Ltd. Country or region before: China |