CN112284182A - Energy-saving control system and method for cooling tower - Google Patents
Energy-saving control system and method for cooling tower Download PDFInfo
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- CN112284182A CN112284182A CN202011173128.XA CN202011173128A CN112284182A CN 112284182 A CN112284182 A CN 112284182A CN 202011173128 A CN202011173128 A CN 202011173128A CN 112284182 A CN112284182 A CN 112284182A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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Abstract
The invention provides an energy-saving control system and method for a cooling tower. The system comprises: at least two refrigeration hosts, at least two cooling towers, at least two chilled water pumps and at least two cooling water pumps; cooling water of the cooling tower is input into a refrigeration main machine through a cooling water pump, and the refrigeration main machine outputs chilled water through a chilled water supply pipeline; and the chilled water return pipeline is input into the refrigeration main machine through a chilled water pump, and the refrigeration main machine is input into the cooling tower through a cooling water return pipeline. The system fully utilizes the cooling area of the cooling tower through an energy-saving control method of the cooling tower, effectively reduces the temperature of cooling water supply, and further reduces the power consumption and energy consumption of the cooling host; and meanwhile, the lowest power consumption of the cooling tower is guaranteed.
Description
Technical Field
The invention relates to the technical field of control systems, in particular to an energy-saving control system and method for a cooling tower.
Background
The refrigerating station room mainly comprises a refrigerating host, a refrigerating water pump, a cooling tower and accessory equipment thereof. The refrigeration host absorbs and emits heat through the phase change of the refrigerant, and consumes electric energy; the refrigeration water pump conveys the low-temperature refrigeration water supplied by the refrigeration main machine to the energy consumption tail end for heat exchange and then returns to the refrigeration main machine to finish the refrigeration water circulation process; the cooling water pump conveys high-temperature cooling water of the refrigeration main machine to the cooling tower for heat exchange and then returns to the refrigeration main machine to complete the cooling water circulation process; the cooling tower exchanges heat between high-temperature cooling water and outdoor air, and the water after heat exchange enters the refrigeration main machine, so that the cooling tower is called as cooling water supply.
The energy consumption of the refrigeration host accounts for more than 60% of the energy consumption of the whole machine room, and the energy expenditure of the refrigeration station room can be effectively reduced by degrading the energy consumption of the refrigeration host. Practice proves that the water supply temperature of the cooling water is reduced by 1 ℃, and the energy consumption of the refrigeration host is reduced by 3%, so that the water supply temperature of the cooling water is reduced as much as possible by a control system.
The difference between the supply water temperature of the cooling water and the wet bulb temperature of the outdoor air is called the cold amplitude, and the lower the cold amplitude is, the more energy-saving the system is.
The conventional energy-saving control strategy of the cooling tower is divided into two types, namely power frequency and frequency conversion according to whether the running frequency of a fan is adjustable. The conventional cooling tower energy-saving control strategy is divided into two parts: starting up the number of the devices and controlling the speed of the fan. The number of the starting-up units is consistent with that of the refrigerating hosts. For a power frequency cooling tower, the fan can carry out primary and secondary speed regulation, the speed of the fan is controlled by the water supply temperature of cooling water, if the water supply temperature of the cooling water is higher than the lowest temperature allowed by a refrigeration host, the speed of the fan is kept, if the water supply temperature of the cooling water is not up to the standard, the speed of the fan is reduced, and if the water supply temperature of the cooling water is still not up to the standard, a bypass valve is opened until the water supply temperature of the cooling water. For the frequency conversion cooling tower, the fan can frequency conversion speed regulation, through outdoor air wet bulb temperature regulation fan frequency, if the cooling water supplies water temperature and is higher than the minimum temperature that the refrigeration host computer allows, then fan speed keeps, if can not, then reduces fan speed, if supply water temperature still not up to standard, then opens bypass valve, until the cooling water supplies water temperature up to standard.
In a conventional control strategy, on one hand, the number of the cooling tower started is completely determined by a refrigeration host, so that the heat exchange area of a filler of the cooling tower is not fully utilized, and the cooling water cooling amplitude does not reach a design value; on the other hand, the speed regulation of the fan only ensures that the water supply temperature of the cooling water is higher than the lowest temperature allowed by the refrigeration host, and the cooling water amplitude is not monitored. In fact, the cooling tower may be installed in an environment where the enclosure is shielded and the ventilation is inconvenient, and even in the case where the filler is insufficient, the sample data provided by a manufacturer must be checked and corrected for use, thereby increasing the control difficulty. On one hand, the number of the opened cooling towers corresponds to the number of the hosts one by one in the conventional control, and two problems exist, namely that actually, the cooling towers can be installed in occasions with enclosure shielding and inconvenient ventilation, even the situations of insufficient filler and the like exist, so that the cooling water supply temperature still cannot reach the design value even if the fan operates at power frequency; secondly, the system runs under partial load in most of time, the main machine is not fully started, the cooling tower runs partially, and the heat exchange area of the cooling filler cannot be fully utilized.
On the other hand, for the power frequency cooling tower, primary and secondary speed regulation is performed according to the type of the fan, the speed of the fan is controlled by monitoring the water supply temperature of the cooling water, if the water supply temperature of the cooling water is higher than the lowest temperature allowed by the refrigeration host machine, the speed of the fan is kept, if the water supply temperature of the cooling water is not up to the standard, the speed of the fan is reduced, and if the water supply temperature of the cooling water is not up to the standard, the bypass valve is opened until the water. There are problems: the same cooling water temperature leads to high energy consumption of the cooling tower because the frequency of the fan is not changed. For the frequency conversion cooling tower, according to outdoor temperature variable frequency speed governing, there is the problem: in general projects, the design cold range of cooling water cannot be achieved. Moreover, for the transformation project, the cost for replacing the cooling tower is high, the cooling tower cannot be reselected, and the transformation difficulty is increased.
Disclosure of Invention
In order to solve the technical problem, the invention provides an energy-saving control system and method for a cooling tower, and the technical scheme provided by the embodiment of the application is as follows:
according to one aspect of the invention, the invention comprises a method for energy-saving control of a cooling tower, comprising the steps of:
step S1, starting the refrigeration host and the cooling tower, wherein the starting number of the refrigeration host is the same as that of the cooling tower;
step S2, controlling the opening V of the cooling water bypass valve to be 0;
step S3, judging whether the water supply temperature of the cooling water meets a first preset condition, if not, turning to step S4, and if so, turning to step S5;
step S4, reducing the fan speed, if the fan speed cannot be reduced, the step S41 is carried out, and if the fan speed can be reduced, the step S42 is carried out;
step S41, the opening of the bypass valve is improved, and the step S43 is skipped;
step S42, judging whether a preset condition I is met, if so, ending the control process, and if not, turning to the step S41;
step S43, judging whether a preset condition I is met, if so, ending the control process, and if not, executing the step S41 again;
step S5, judging whether the cold breadth meets the second preset condition, if yes, ending the control process, and if not, turning to the step S6;
step S6, increasing the fan speed, if the fan speed can be increased, executing the step S5 again, and if the fan speed cannot be increased, turning to the step S7;
step S7, increasing the number of cooling tower starting units, and executing steps S1-S5 again.
The first preset condition is that the supply water temperature of the cooling water is greater than T1; the second preset condition is that the cold amplitude-T2 < ═ T3, where T1, T2, and T3 are the minimum cooling water supply water temperature of the refrigeration host, the cold amplitude set value, and the allowable cold amplitude deviation, respectively.
According to one aspect of the invention, the minimum cooling water supply temperature, the cold amplitude set value and the allowable cold amplitude deviation of the refrigeration main machine are respectively 15 ℃, 3 ℃ and 0.5 ℃.
According to one aspect of the invention, in step S7, the number of cooling tower starts is increased at a rate of 1 station at a time.
According to an aspect of the present invention, the present invention further provides an energy saving control system for cooling tower control, including: at least two refrigeration hosts, at least two cooling towers, at least two chilled water pumps and at least two cooling water pumps; cooling water of the cooling tower is input into a refrigeration main machine through a cooling water pump, and the refrigeration main machine outputs chilled water through a chilled water supply pipeline; and the chilled water return pipeline is input into the refrigeration main machine through a chilled water pump, the refrigeration main machine is input into the cooling tower through a cooling water return pipeline, and the system executes an energy-saving control method of the cooling tower.
According to an aspect of the present invention, the present invention also provides a control system comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the energy saving control method of the cooling tower.
According to an aspect of the present invention, the present invention also provides a computer readable storage medium having computer instructions stored thereon, wherein the instructions, when executed by a processor, implement a method for energy saving control of a cooling tower.
Compared with the prior art, the invention has the following beneficial effects: the invention provides an energy-saving control system and method based on a cooling tower, which can fully utilize the cooling area of the cooling tower, effectively reduce the temperature of cooling water supply and further reduce the power consumption and energy consumption of a cooling host; and meanwhile, the lowest power consumption of the cooling tower is guaranteed.
Drawings
FIG. 1 is a block diagram of a cooling tower controlled economizer control system according to the present invention;
fig. 2 is a flow chart of an energy-saving control method for cooling tower control according to the present invention.
Description of the main part symbols: 1-a first refrigeration host; 2-a second refrigeration host; 3-chilled water supply pipeline; 4-chilled water return pipe; 5-a chilled water pump; 6-cooling water return pipeline; 7-a first cooling tower; 8-a second cooling tower; 9-cooling water supply pipeline; and 10-a cooling water pump.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and the detailed description. It will be appreciated by persons skilled in the art that although the invention has been described above in connection with specific embodiments and examples, to the extent that specific materials are mentioned, this is for illustrative purposes only and is not intended to be limiting. Those skilled in the art may develop equivalent devices or compositions without the exercise of inventive effort and without departing from the scope of the present invention.
The invention relates to a cooling tower controlled energy-saving control system, which comprises: at least two refrigeration hosts, at least two cooling towers, at least two chilled water pumps and at least two cooling water pumps; cooling water of the cooling tower is input into a refrigeration main machine through a cooling water pump, and the refrigeration main machine outputs chilled water through a chilled water supply pipeline; and the chilled water return pipeline is input into the refrigeration main machine through a chilled water pump, and the refrigeration main machine is input into the cooling tower through a cooling water return pipeline.
Fig. 1 shows a preferred embodiment of a cooling tower controlled energy saving control system of the present invention, which includes two cooling main machines: first refrigeration host computer 1, second refrigeration host computer 2 and two cooling towers: a first cooling tower 7 and a second cooling tower 8. Cooling water of the first cooling tower 7 and the second cooling tower 8 is respectively input into the first refrigeration main machine 1 and the second refrigeration main machine 2 through a cooling water pump 10, and the first refrigeration main machine 1 and the second refrigeration main machine 2 output chilled water through a chilled water supply pipeline 3; the chilled water return pipeline 4 is respectively input into the first refrigeration host 1 and the second refrigeration host 2 through the chilled water pump 5, and the first refrigeration host 1 and the second refrigeration host 2 are respectively input into the first cooling tower 7 and the second cooling tower 8 through the cooling water return pipeline 6.
The first refrigeration main machine 1 and the second refrigeration main machine 2 are preferably a cooling unit 1 and a cooling unit 2, absorb and radiate heat through the phase change of a refrigerant, and consume electric energy; the low-temperature chilled water supplied by the refrigeration main machine is conveyed to the tail end of the energy consumption through a chilled water supply pipeline 3 for heat exchange, and then the chilled water returns to the first refrigeration main machine 1 and the second refrigeration main machine 2 through a chilled water return pipeline 4 to finish the chilled water circulation process; the cooling water pump transports the cooling water backwater of the first refrigeration host 1 and the second refrigeration host 2 to the first cooling tower 7 and the second cooling tower 8 through the cooling water backwater pipeline 6, and the cooling water returns to the first refrigeration host 1 and the second refrigeration host 2 through the cooling water supply pipeline 9 after heat exchange, so that the cooling water circulation process is completed. The cooling water pump 10 provides energy for circulation; the cooling tower exchanges heat between high-temperature cooling water and outdoor air, and the water after heat exchange enters the refrigeration main machine.
Referring to fig. 2, which is a flowchart illustrating an energy saving control method for cooling tower control according to the present invention, the minimum cooling water supply temperature, the cold amplitude set value, and the allowable cold amplitude deviation of the cooling main unit are set to T1, T2, and T3, respectively. The refrigeration main machine here is the first refrigeration main machine 1 or the second refrigeration main machine 2 in fig. 1. T1, T2, T3 are required to be judged according to specific items, and as exemplary values, in one embodiment of the present invention, the minimum cooling water supply water temperature, the cold amplitude set value and the allowable cold amplitude deviation of the refrigerating main machine are 15 c, 3 c, 0.5 c, respectively. In order to optimize the energy consumption of the refrigeration host to be the lowest, two preset judgment conditions are configured: presetting a condition I that the water supply temperature of the cooling water is greater than T1; the preset condition two, cold amplitude-T2 < ═ T3. The specific controllable contents include three items: 1. starting the number of cooling towers; 2. fan speed; 3. the bypass valve opening. The temperature index can be obtained by a temperature sensor configured on the refrigeration host, and on the premise of meeting the requirement of the water inlet temperature of the refrigeration host, the energy-saving control method for the cooling tower control enables the water supply temperature of the cooling water to be the lowest, so that the energy consumption of the refrigeration host is reduced.
By taking the cooling tower power frequency operation as an example, the energy-saving control method for controlling the cooling tower comprises the following steps of:
step S1, starting the refrigeration host and the cooling tower, wherein the starting number of the refrigeration host is the same as that of the cooling tower;
step S2, controlling the opening V of the cooling water bypass valve to be 0;
step S3, judging whether the water supply temperature of the cooling water meets a first preset condition, if not, turning to step S4, and if so, turning to step S5;
step S4, reducing the fan speed, if the fan speed cannot be reduced, the step S41 is carried out, and if the fan speed can be reduced, the step S42 is carried out;
step S41, the opening of the bypass valve is improved, and the step S43 is skipped;
step S42, judging whether a preset condition I is met, if so, ending the control process, and if not, turning to the step S41;
step S43, judging whether a preset condition I is met, if so, ending the control process, and if not, executing the step S41 again;
step S5, judging whether the cold breadth meets the second preset condition, if yes, ending the control process, and if not, turning to the step S6;
step S6, increasing the fan speed, if the fan speed can be increased, executing the step S5 again, and if the fan speed cannot be increased, turning to the step S7;
step S7, increasing the number of cooling tower starting units, and executing steps S1-S5 again.
The first preset condition is that the supply water temperature of the cooling water is greater than T1; the second preset condition is that the cold amplitude-T2 < ═ T3, where T1, T2, and T3 are the minimum cooling water supply water temperature of the refrigeration host, the cold amplitude set value, and the allowable cold amplitude deviation, respectively.
In step S3, the weak cooling water supply temperature does not satisfy the first preset condition, which proves that the cooling water supply temperature is too low, and the cooling capacity of the cooling tower needs to be reduced, the operation speed of the cooling tower fan is first reduced, and if the speed cannot be reduced, the opening of the bypass valve needs to be adjusted until the cooling water supply temperature is not lower than 15 ℃.
In step S41, increasing the bypass valve opening by 5% means that the opening of the bypass valve is increased by 5%, that is, the current opening V is V + 5%.
In step S6, there is an upper limit to the fan speed and therefore it cannot be increased indefinitely. This can only be achieved by increasing the number of cooling towers when full fan operation requires a further temperature reduction.
In step S7, increasing the number of cooling tower starts is to increase by one at a time.
The number of the refrigeration hosts and the number of the cooling towers can be several, the energy consumption can be configured to be the lowest according to the energy-saving control method for controlling the cooling tower, and specific test data examples of energy saving obtained by a system comprising two refrigeration hosts and two cooling towers through the energy-saving control method for controlling the cooling tower are given as follows:
equipment configuration:
2 refrigeration hosts, wherein the full-load power consumption is 500 kw;
2 frequency conversion cooling towers with full load electric power of 25 kw;
2 frequency conversion cooling water pumps with full load power consumption of 55 kw;
environmental parameters: the outdoor wet bulb temperature is 15 ℃;
the system load rate: 70% load rate;
energy saving rate: 7 percent;
specific energy-saving itemized data:
according to the control method disclosed by the invention, on one hand, the number of the cooling towers is controlled, and the heat exchange area of the cooling tower filler can be fully utilized, so that the cooling amplitude of the cooling water reaches or is even lower than a design value. On the other hand, the frequency conversion control of the cooling tower utilizes the outlet water temperature of the cooling tower to control, reduces the use of a bypass, can save more energy, ensures that the power consumption of the cooling tower is the lowest, and has more reliability and feasibility according to the frequency conversion which can be separated from factors such as factory data and actual installation position limitation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
For convenience of description, the above devices are described separately in terms of functional division into various units/modules. Of course, the functionality of the units/modules may be implemented in one or more software and/or hardware implementations of the invention.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An energy-saving control method of a cooling tower is characterized by comprising the following steps:
step S1, starting the refrigeration host and the cooling tower, wherein the starting number of the refrigeration host is the same as that of the cooling tower;
step S2, controlling the opening V of the cooling water bypass valve to be 0;
step S3, judging whether the water supply temperature of the cooling water meets a first preset condition, if not, turning to step S4, and if so, turning to step S5;
step S4, reducing the fan speed, if the fan speed cannot be reduced, the step S41 is carried out, and if the fan speed can be reduced, the step S42 is carried out;
step S41, the opening of the bypass valve is improved, and the step S43 is skipped;
step S42, judging whether a preset condition I is met, if so, ending the control process, and if not, turning to the step S41;
step S43, judging whether a preset condition I is met, if so, ending the control process, and if not, executing the step S41 again;
step S5, judging whether the cold breadth meets the second preset condition, if yes, ending the control process, and if not, turning to the step S6;
step S6, increasing the fan speed, if the fan speed can be increased, executing the step S5 again, and if the fan speed cannot be increased, turning to the step S7;
step S7, increasing the number of cooling tower starters, and executing the steps S1-S5 again;
the first preset condition is that the supply water temperature of the cooling water is greater than T1; the second preset condition is that the cold amplitude-T2 < ═ T3, where T1, T2, and T3 are the minimum cooling water supply water temperature of the refrigeration host, the cold amplitude set value, and the allowable cold amplitude deviation, respectively.
2. The energy-saving control method of the cooling tower according to claim 1, characterized in that: the lowest cooling water supply temperature, the set value of the cold amplitude and the allowable deviation of the cold amplitude of the refrigeration host are respectively 15 ℃, 3 ℃ and 0.5 ℃.
3. The energy-saving control method of the cooling tower according to claim 1, characterized in that: in step S7, the number of cooling tower start-up units is increased by 1 unit at a time.
4. A cooling tower controlled energy saving control system comprising: at least two refrigeration hosts, at least two cooling towers, at least two chilled water pumps and at least two cooling water pumps; cooling water of the cooling tower is input into a refrigeration main machine through a cooling water pump, and the refrigeration main machine outputs chilled water through a chilled water supply pipeline; the chilled water return pipe is input into the refrigeration main machine through a chilled water pump, the refrigeration main machine is input into the cooling tower through a cooling water return pipe, and the system performs the method according to any one of claims 1 to 3.
5. A control system comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the method of any one of claims 1 to 3.
6. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the method of any one of claims 1-3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923508A (en) * | 2021-02-25 | 2021-06-08 | 青岛海尔空调电子有限公司 | Control method of air conditioner cooling water system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104781629A (en) * | 2012-11-14 | 2015-07-15 | 三菱重工业株式会社 | Cooling tower control device, cooling tower control method, and heat source system |
| CN104838213A (en) * | 2013-01-31 | 2015-08-12 | 三菱重工业株式会社 | Heat source system, and device and method for controlling cooling water supply device |
| CN108291789A (en) * | 2015-10-05 | 2018-07-17 | 乔治洛德方法研究和开发液化空气有限公司 | Control system for cooling tower and cooling tower control method |
| CN109631282A (en) * | 2018-12-21 | 2019-04-16 | 深圳市紫衡技术有限公司 | A kind of central air conditioner system control method and its system, equipment, storage medium |
| CN109654887A (en) * | 2018-11-04 | 2019-04-19 | 江苏兴达钢帘线股份有限公司 | A kind of circulating water cooling system and its autocontrol method |
-
2020
- 2020-10-28 CN CN202011173128.XA patent/CN112284182A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104781629A (en) * | 2012-11-14 | 2015-07-15 | 三菱重工业株式会社 | Cooling tower control device, cooling tower control method, and heat source system |
| CN104838213A (en) * | 2013-01-31 | 2015-08-12 | 三菱重工业株式会社 | Heat source system, and device and method for controlling cooling water supply device |
| CN108291789A (en) * | 2015-10-05 | 2018-07-17 | 乔治洛德方法研究和开发液化空气有限公司 | Control system for cooling tower and cooling tower control method |
| CN109654887A (en) * | 2018-11-04 | 2019-04-19 | 江苏兴达钢帘线股份有限公司 | A kind of circulating water cooling system and its autocontrol method |
| CN109631282A (en) * | 2018-12-21 | 2019-04-16 | 深圳市紫衡技术有限公司 | A kind of central air conditioner system control method and its system, equipment, storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923508A (en) * | 2021-02-25 | 2021-06-08 | 青岛海尔空调电子有限公司 | Control method of air conditioner cooling water system |
| CN112923508B (en) * | 2021-02-25 | 2022-11-22 | 青岛海尔空调电子有限公司 | Control method of air conditioner cooling water system |
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Application publication date: 20210129 |
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