CN112814071B - Water supply system and water supply method of indirect evaporative cooling unit - Google Patents
Water supply system and water supply method of indirect evaporative cooling unit Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 417
- 238000001816 cooling Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005507 spraying Methods 0.000 claims abstract description 235
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 49
- 238000012806 monitoring device Methods 0.000 claims description 32
- 238000005057 refrigeration Methods 0.000 description 13
- 238000012545 processing Methods 0.000 description 12
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- 230000008859 change Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000010977 unit operation Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000008400 supply water Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
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Abstract
The present disclosure shows a water supply system and a water supply method for an indirect evaporative cooling unit, wherein the water supply system comprises: the detection device detects water quantity information of the reservoir and sends the detected water quantity information to the controller; the controller is used for determining the spraying mode of the spraying device based on the received water amount information, generating a control signal according to the determined spraying mode and sending the control signal to the spraying device; and the spraying device starts the corresponding spraying pipeline based on the received control signal so that the spraying device works according to a spraying mode, and different spraying pipelines are matched with different spraying water flow. And determining a spraying mode according to the water quantity information of the water storage tank, so that different spraying water flows are adopted in different spraying modes. Therefore, when external water supply is insufficient, the regulation of spraying water flow is realized by switching the spraying mode, so that the spraying water consumption can be reduced, and the indirect evaporative cooling unit can still continuously refrigerate for a long time under the condition of insufficient water supply.
Description
Technical Field
The disclosure relates to the technical field of computers, in particular to a water supply system and a water supply method of an indirect evaporative cooling unit.
Background
The indirect evaporative cooling technology is an efficient data center refrigeration solution, the characteristic that the temperature of a wet bulb of air is lower than that of a dry bulb is utilized, the temperature of the wet bulb is approached after outdoor air is subjected to evaporative cooling and is cooled, the outdoor air and the indoor air exchange through an air-air heat exchanger are carried out, and the indoor air supply temperature meeting the requirements is obtained, so that the heat exchange efficiency is improved, the natural cooling time is prolonged, and the energy consumption of a data center is reduced.
The working conditions of the indirect evaporative cooling refrigerating unit are generally divided into dry working conditions, wet working conditions, auxiliary cold source working conditions and other operation working conditions. The dry working condition refers to a working state without spraying water on the surface of the air-air heat exchanger. The wet working condition refers to the working state that the indirect evaporative cooling unit introduces external water supply and sprays water on the surface of the air-air heat exchanger through the spraying device to realize evaporative cooling. When the indirect evaporative cooling refrigeration unit operates under wet conditions, the refrigeration effect of the indirect evaporative cooling unit depends on external water supply. How to ensure the continuous refrigeration of the indirect evaporative cooling refrigerating unit under the condition of insufficient external water supply is an urgent problem to be solved by the technical personnel in the field.
Disclosure of Invention
The disclosure provides a water supply system and a water supply method for an indirect evaporative cooling unit, which at least solve the problem of insufficient continuous refrigerating capacity of the indirect evaporative cooling refrigerating unit under the condition of insufficient water supply in the related art. The technical scheme of the disclosure is as follows:
according to a first aspect of the present disclosure, there is provided a water supply system for an indirect evaporative cooling unit, the water supply system comprising:
the detection device detects water quantity information of the reservoir and sends the detected water quantity information to the controller;
the controller determines a spraying mode of the spraying device based on the received water amount information, generates a control signal according to the determined spraying mode and sends the control signal to the spraying device, wherein the different spraying modes adopt different spraying water flows;
and the spraying device starts the corresponding spraying pipeline based on the received control signal so as to enable the spraying device to work according to the spraying mode, and different spraying pipelines are matched with different spraying water flow rates.
In an alternative implementation mode, the spraying device comprises a first spraying pipeline, a second spraying pipeline and a switch device,
the water inlet end of the first spraying pipeline is connected with the switch device, the water outlet end of the first spraying pipeline is connected with the water collecting tank, and the water collecting tank is connected with a nozzle of the water supply system through a fixed-frequency water pump;
the water inlet end of the second spraying pipeline is connected with the switch device, and the water outlet end of the second spraying pipeline is connected with the nozzle;
the switching device is further connected with the reservoir through a variable frequency water pump and is configured to conduct the first spraying pipeline or the second spraying pipeline based on the received control signal.
In an alternative implementation, the controller is configured to:
when the water amount information is larger than or equal to a first preset threshold value, generating a first control signal and sending the first control signal to the switch device;
the switching device is specifically configured to:
and switching on the first spraying pipeline based on the received first control signal.
In an alternative implementation, the controller is configured to:
when the water amount information is smaller than a second preset threshold value, generating a second control signal, and sending the second control signal to the switch device;
the switching device is specifically configured to:
and switching on the second spraying pipeline based on the received second control signal.
In an alternative implementation, the switch device comprises an electric three-way valve.
In an optional implementation manner, the water supply system further comprises a first water amount monitoring device arranged between the variable-frequency water pump and the switch device, and a second water amount monitoring device arranged between the water collecting tank and the water storage tank;
the controller is further connected to the first water amount monitoring device and the second water amount monitoring device, respectively, and is further configured to:
when the second spraying pipeline is conducted by the switch device, calculating the actual water consumption in a preset time period according to the water quantity values detected by the first water quantity monitoring device and the second water quantity monitoring device; and generating an adjusting signal according to the actual water consumption in the preset time period and a preset water limit so as to adjust the working frequency of the variable frequency water pump and adjust the spray water flow of the second spray pipeline.
In an alternative implementation, the controller is configured to:
and when the actual water consumption in the preset time period is greater than or equal to the preset water limit, generating a first adjusting signal, wherein the first adjusting signal is used for indicating to reduce the working frequency of the variable-frequency water pump until the actual water consumption in the preset time period is less than the preset water limit.
According to a second aspect of the present disclosure, there is provided a water supply method for an indirect evaporative cooling unit, which is applied to the water supply system of the first aspect, the water supply method including;
detecting water quantity information of a reservoir;
determining a spraying mode based on the water amount information, and generating a control signal according to the determined spraying mode, wherein the different spraying modes adopt different spraying water flows;
and starting the corresponding spraying pipeline based on the control signal so as to enable the water supply system to work according to the spraying mode, wherein different spraying pipelines are matched with different spraying water flow rates.
In an optional implementation manner, when the water supply system includes a first spraying pipeline, a second spraying pipeline and a switch device, the step of starting the corresponding spraying pipeline based on the control signal includes:
and switching on the first spraying pipeline or the second spraying pipeline based on the received control signal.
In an optional implementation manner, the step of determining a spraying mode based on the water amount information and generating a control signal according to the determined spraying mode includes:
when the water amount information is greater than or equal to a first preset threshold value, generating a first control signal;
the step of turning on the first spray pipe or the second spray pipe based on the received control signal includes:
and switching on the first spraying pipeline based on the received first control signal.
In an optional implementation manner, the step of determining a spraying mode based on the water amount information and generating a control signal according to the determined spraying mode includes:
when the water amount information is smaller than a second preset threshold value, generating a second control signal;
the step of turning on the first spray pipe or the second spray pipe based on the received control signal includes:
and switching on the second spraying pipeline based on the received second control signal.
In an optional implementation manner, when the water supply system further includes a first water amount monitoring device and a second water amount monitoring device, and the switching device turns on the second spraying pipeline, the water supply method further includes:
calculating the actual water consumption in a preset time period according to the water quantity values detected by the first water quantity monitoring device and the second water quantity monitoring device;
and generating an adjusting signal according to the actual water consumption in the preset time period and a preset water limit so as to adjust the working frequency of the variable frequency water pump and adjust the spraying water flow of the second spraying pipeline.
In an alternative implementation manner, the step of generating an adjustment signal according to the actual water consumption in the preset time period and a preset water limit includes:
and when the actual water consumption in the preset time period is greater than or equal to the preset water limit, generating a first adjusting signal, wherein the first adjusting signal is used for indicating to reduce the working frequency of the variable-frequency water pump until the actual water consumption in the preset time period is less than the preset water limit.
The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:
the technical scheme of the present disclosure provides a water supply system and a water supply method for an indirect evaporative cooling unit, wherein the water supply system includes: the detection device detects water quantity information of the reservoir and sends the detected water quantity information to the controller; the controller is used for determining the spraying mode of the spraying device based on the received water amount information, generating a control signal according to the determined spraying mode and sending the control signal to the spraying device; and the spraying device starts the corresponding spraying pipeline based on the received control signal so that the spraying device works according to a spraying mode, and different spraying pipelines are matched with different spraying water flow. According to the technical scheme, the spraying mode is determined according to the water quantity information of the water storage tank, so that different spraying water flows are adopted in different spraying modes. Therefore, when external water supply is insufficient, the regulation of spraying water flow is realized by switching the spraying mode, so that the spraying water consumption can be reduced, the spraying time is prolonged, the indirect evaporative cooling unit can continuously refrigerate for a long time, the cold supplementing quantity of a cold air system is reduced, and the unit power consumption is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure and are not to be construed as limiting the disclosure.
Fig. 1 is a schematic diagram illustrating a spraying principle of an indirect evaporative cooling unit in the related art.
FIG. 2 is a block diagram of a water supply system for an indirect evaporative cooling unit in accordance with an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a water supply system of an indirect evaporative cooling unit according to an exemplary embodiment.
Fig. 4 is a schematic structural view illustrating a water supply system conducting a first spray pipe according to an exemplary embodiment.
Fig. 5 is a schematic structural view illustrating a water supply system conducting a second spray pipe according to an exemplary embodiment.
FIG. 6 is a schematic diagram of a plurality of indirect evaporative cooling units shown in accordance with an exemplary embodiment.
FIG. 7 is a flow chart illustrating a method of supplying water to an indirect evaporative cooling unit according to an exemplary embodiment.
FIG. 8 is a block diagram illustrating an electronic device in accordance with an example embodiment.
FIG. 9 is a block diagram illustrating an electronic device in accordance with an example embodiment.
Detailed Description
In order to make the technical solutions of the present disclosure better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The indirect evaporative cooling units currently generally include three modes of operation, including: dry mode (air-to-air heat exchange operation), wet mode (spray heat exchange operation) and mixed mode operation (spray heat exchange + cold air system cooling operation).
Referring to fig. 1, when the indirect evaporative cooling unit operates in a wet mode, a unit water supply system pumps stored water in a water collecting tank through a water pump and sends the stored water to a spraying system for spraying, and outdoor air is cooled; the spray water is recovered by the water collecting tank and then pumped by the water pump to form a water circulation system. Therefore, in order to ensure the refrigerating capacity of the unit in summer, municipal water supply needs to be ensured for spraying. Insufficient municipal water supply will result in insufficient unit spray water flow and reduced unit refrigeration capacity. Data center can build the cistern for the guarantee lasts the water use, when municipal daily water supply is not enough or municipal water cut off, can supply water for indirect evaporative cooling unit through the cistern is emergent, and indirect evaporative cooling unit need control daily water consumption simultaneously. In the face of summer water shortage environments, relevant solutions include: according to the first scheme, the operation mode is adjusted according to time, for example, the operation spraying mode is stopped at 12-16 points, the compressor is started for cold compensation operation, the operation spraying mode is started at 17-11 points, and the operation spraying mode or the mixing mode is automatically selected according to outdoor conditions; and according to the second scheme, the unit operation mode is selected according to the outdoor dry bulb temperature, when the outdoor dry bulb temperature is lower than the set temperature, the operation of the spraying mode is stopped, the compressor is started for cold supplement operation, and when the outdoor dry bulb temperature is higher than the set temperature, the spraying mode or the mixed mode is operated.
When the external water supply is insufficient, the related technology is to control the spraying time according to the time period or the outdoor temperature, namely, the daily water consumption is controlled by opening or closing the spraying mode, and the condition of stopping spraying for a long time can appear on the operation strategy. When the unit is in a non-spraying state for a long time, the cold air system needs to be operated to supplement cold, so that the daily water consumption of the unit can be ensured, but the cold supplementing quantity of the cold air system is greatly improved, so that the operation power consumption of the unit can be increased, and the operation cost is improved.
Therefore, how to ensure that the indirect evaporative cooling refrigeration unit maintains long-time refrigeration capacity and reduce unit operation power consumption under the condition of insufficient external water supply is a problem to be solved by the technical personnel in the field.
An embodiment of the present disclosure illustrates a water supply system for an indirect evaporative cooling unit. Fig. 2 is a block diagram illustrating a water supply system of an indirect evaporative cooling unit according to an exemplary embodiment, which may include, as shown in fig. 2:
the detection device 21 detects the water quantity information of the reservoir and sends the detected water quantity information to the controller 22;
the controller 22 determines the spraying mode of the spraying device 23 based on the received water amount information, generates a control signal according to the determined spraying mode, and sends the control signal to the spraying device 23, wherein the spraying water flow rates adopted by different spraying modes are different;
and the spraying device 23 starts the corresponding spraying pipeline based on the received control signal so that the spraying device 23 works according to a spraying mode, and different spraying pipelines are matched with different spraying water flow rates.
In this embodiment, the detecting means 21 may for example comprise a level monitoring means for detecting a level value of the reservoir, and the water quantity information may for example comprise the level value of the reservoir.
In this embodiment, the spraying modes of the spraying device 23 may be multiple, each spraying mode corresponds to different spraying water flows, and different spraying water flows are realized by starting corresponding spraying pipelines through the spraying device 23.
In a specific implementation, the detection device 21 detects water amount information, the controller 22 determines a spraying mode according to the water amount information to generate a control signal corresponding to the spraying mode, and the spraying device 23 starts a corresponding spraying pipeline according to the control signal to realize spraying at a spraying water flow rate corresponding to the determined spraying mode.
The water supply system of indirect evaporative cooling unit that this embodiment provided confirms the mode of spraying according to the water yield information of cistern to spray the water flow at the different modes of spraying and adopt the difference. Consequently, when the outside supplies water not enough, realize spraying the regulation of discharge through switching the mode of spraying to can reduce and spray the water consumption, the extension sprays for a long time, ensures that indirect evaporative cooling unit can last the refrigeration for a long time, keeps the scheme that fixed flow sprayed with indirect evaporative cooling unit and compares, and this embodiment can reduce cold air system's moisturizing volume, reduces the unit consumption.
In an alternative implementation manner, referring to fig. 3, the spraying device 23 may include a first spraying pipe 231, a second spraying pipe 232, and a switch device 233, a water inlet end of the first spraying pipe 231 is connected with the switch device 233, a water outlet end is connected with a water collecting tank, and the water collecting tank is connected with a nozzle of the water supply system through a fixed-frequency water pump; the water inlet end of the second spraying pipeline 232 is connected with the switch device 233, and the water outlet end is connected with the nozzle; the switching device 233 is further connected to the reservoir through the variable frequency water pump, and configured to turn on the first spray pipe 231 or the second spray pipe 232 based on the received control signal.
As shown in fig. 3, the switch device 233 may include an electric three-way valve, which may be a shunt-type electric three-way valve, for example.
In practical applications, the water supply system may further include an external water supply line and a water return line. As shown in FIG. 3, the water inlet end of the external water supply pipeline is connected with the water reservoir, the water outlet end is connected with the switch device 233, and the variable frequency water pump is arranged on the external water supply pipeline. The water return pipeline is connected with the water collecting tank at the water inlet end and the water outlet end and is connected with the water storage tank, the water return pipeline can be provided with a sewage recycling system, the sewage recycling system is used for treating the drainage of the water collecting tank, and the treated water can be supplied to the water storage tank when meeting the use requirement.
In a specific implementation, the controller 22 may determine that the spraying mode of the spraying device 23 is the first spraying mode or the second spraying mode according to the water quantity information of the water reservoir detected by the detecting device 21, generate a control signal corresponding to the first spraying mode or the second spraying mode, and the switch device 233 turns on the first spraying pipeline 231 or the second spraying pipeline 232 according to the control signal. The first spraying pipe 231 may correspond to a first spraying mode, and the second spraying pipe 232 may correspond to a second spraying mode.
In this embodiment, the spraying device 23 is provided in the unit body as shown in fig. 3. In practical applications, the water supply system may include a plurality of unit bodies or spray devices connected in parallel, as shown in fig. 6. The spray pattern of each spray device in parallel is determined by the controller 22 based on the water level information of the reservoir.
In an alternative implementation, the controller 22 may be specifically configured to: when the water amount information is greater than or equal to the first preset threshold, generating a first control signal, and sending the first control signal to the switching device 233; the switching device 233 may be specifically configured to: based on the received first control signal, the first spraying pipe 231 is turned on. The first preset threshold may be set according to an actual situation, and this embodiment is not limited.
When the switch device 233 is connected to the first spraying pipe 231, the unit operates in a first spraying mode, the first spraying mode is a mode in which the fixed-frequency water pump inside the unit starts water supply spraying, and the spraying flow rate is fixed, so that the first spraying mode can be used when the water supply is sufficient, that is, when the water amount information is greater than or equal to a first preset threshold value, the first spraying pipe 231 is connected.
When the unit is operating in the first spray mode, the water circulation is shown in figure 4 with bold lines. The unit introduces external water supply and replenishes for the header tank, sends when the unit and sprays the demand after, and switching device 233 switches on first spray pipe 231 and supplies water to the header tank, and electric three-way valve control supplies water direction to A to, and when the header tank liquid level satisfies the water pump start-up requirement of fixed frequency, the water pump start-up of fixed frequency supplies water and sprays, the wet operating mode of unit operation. The unit controls the liquid level of the water collection tank through a liquid level sensor or a water supplementing floating ball valve, and controls the electric three-way valve to be in a water supplementing state or a closing state according to the liquid level of the water collection tank. And when the unit sends a spraying stopping command, the fixed-frequency water pump stops running, and the electric three-way valve is closed to stop water supplement. When the water quality of the water collecting tank does not meet the requirement (such as high conductivity), a drain valve of the water collecting tank is opened to drain water, and then water is supplemented. After the drain valve is opened, the stored water of the water collecting tank is discharged to a sewage reuse system for treatment, and the treated water meets the use requirement and is supplied to the reservoir.
In an alternative implementation, the controller 22 may be specifically configured to: when the water amount information is smaller than a second preset threshold, generating a second control signal, and sending the second control signal to the switching device 233; the switching device 233 is specifically configured to: based on the received second control signal, the second spray pipe 232 is turned on. The second preset threshold may be set according to an actual situation, and this embodiment is not limited. The second preset threshold may be less than or equal to the first preset threshold.
When the switching device 233 is connected with the second spraying pipeline 232, the unit works in a second spraying mode, the second spraying mode can be directly supplied with water by an external variable frequency water pump for spraying, and the spraying flow can be controlled by the working frequency of the variable frequency water pump, so that when the data center enters a water shortage state, the unit can operate in the second spraying mode, namely when the water amount information is smaller than a second preset threshold value, the second spraying pipeline 232 is connected.
When the unit is operating in the second spray mode, the water circulation is shown in figure 5 with bold lines. When the unit sends a spraying requirement, the switch device 233 conducts the second spraying pipeline 232, the electric three-way valve controls the water supply direction to the direction B, and the variable frequency water pump pumps water from the reservoir at the moment and directly supplies water to the nozzle for spraying. The water flow on the second spraying pipeline can be controlled by adjusting the working frequency of the variable-frequency water pump, and the spraying water flow can be adjusted according to refrigeration requirements, residual water in the reservoir and the like in practical application.
It should be noted that, when the unit is operated in the second spraying mode, the electric drain valve of the water collection tank may not be opened, the spraying water is recovered through the water collection tank, when the unit continuously sprays to cause the water collection tank to overflow, the water is discharged through the overflow pipe of the water collection tank and collected to the sewage recycling system, and the treated water meets the use requirement and is supplied to the reservoir.
The water supply system that this embodiment provided can switch on the second according to the water yield information selection of cistern and spray pipeline or first pipeline that sprays, when switching on the second and spray the pipeline, can adjust according to restriction conditions such as refrigeration demand, cistern residual water volume and spray water flow, makes indirect evaporative cooling unit no longer keep fixed flow and spray to reduce the water consumption that sprays, it is long when making indirect evaporative cooling unit extension spray, reduces the unit consumption simultaneously.
In an alternative implementation, referring to fig. 3, the water supply system may further include a first water amount monitoring device disposed between the variable frequency water pump and the switching device 233, and a second water amount monitoring device disposed between the water collection tank and the water reservoir; the controller 22 may be further connected to the first water amount monitoring device and the second water amount monitoring device, and is further configured to calculate actual water usage within a preset time period according to the water amount values detected by the first water amount monitoring device and the second water amount monitoring device when the second spraying pipeline 232 is turned on by the switching device 233; and generating an adjusting signal according to the actual water consumption in the preset time period and the preset water limit so as to adjust the working frequency of the variable frequency water pump and adjust the spraying water flow of the second spraying pipeline.
Further, the controller is configured to: and when the actual water consumption in the preset time period is greater than or equal to the preset water limit, generating a first adjusting signal, wherein the first adjusting signal is used for indicating to reduce the working frequency of the variable-frequency water pump until the actual water consumption in the preset time period is less than the preset water limit.
When the actual water consumption in the preset time period is less than the preset water limit, the working frequency of the variable-frequency water pump can be kept unchanged.
Wherein, the first water amount monitoring device is used for detecting the actual water supply amount and can comprise a water supply meter. The second water amount detecting device is used for detecting the actual backwater amount and can comprise a water discharge meter. The actual water usage amount for the preset time period may be determined by a difference between the actual water supply amount and the actual water return amount for the preset time period.
Under the second spray mode, the outdoor wet bulb temperature and the spray water flow can influence the heat exchange effect of the air heat exchanger in the unit. In specific implementation, the initial working frequency of the variable frequency water pump can be determined according to the relevance of the outdoor wet bulb temperature, the spraying water flow and the air-air heat exchange capacity. In the running process of the unit, the working frequency of the variable-frequency water pump can be adjusted according to the actual water consumption in the preset time period and the preset water amount limit.
For example, when the daily water usage of the unit is limited, the hourly water usage of the unit can be monitored, i.e. the hourly water usage is calculated based on the values of the first and second water monitoring devices. When the actual hourly water consumption is out of limit (is more than or equal to the preset water limit), the working frequency of the variable-frequency water pump can be reduced, so that the spraying flow is reduced, the water consumption is reduced, and meanwhile, the cold air system can properly increase the cold supplementing quantity according to the refrigeration demand to ensure the stable working condition. When the actual time-by-time water consumption meets the requirement (is less than the preset water limit), the working frequency of the variable-frequency water pump can be continuously kept, and the current water amount is kept for spraying until the water amount exceeds the limit.
In specific implementation, the preset water amount limit can be determined according to the limit conditions such as refrigeration demand and residual water in a reservoir within a preset time period, and then compared with the actual water consumption within the preset time period, the spray water flow is adjusted according to the comparison result to change the heat exchange amount of the air-air heat exchanger, so that a unit gradient water consumption control logic is formed. The present embodiment does not limit the specific determination manner and value of the preset water amount limit.
This is disclosed through the real-time discharge that sprays of control unit, makes indirect evaporative cooling unit no longer keep fixed flow and sprays, but reduces according to restriction conditions such as refrigeration demand, cistern surplus water and spray the water supply to when municipal water supply lacks area, municipal water supply easy interruption area use indirect evaporative cooling unit, long when can prolong the spraying of indirect evaporative cooling unit, guarantee unit steady operation and provide the required cold volume of computer lab. Although the heat exchange capacity of the air-air heat exchanger in the spraying mode can be reduced to a certain extent by reducing the spraying water flow in unit time, compared with the condition of closing spraying for a long time, the cold supplementing quantity of a cold air system can be reduced, so that the power consumption of the unit is reduced while the water consumption is controlled.
Fig. 7 is a flow chart illustrating a water supply method of an indirect evaporative cooling unit according to an exemplary embodiment, which may be applied to the water supply system according to any one of the embodiments.
As shown in fig. 7, the water supply method may include the following steps.
In step S71, water quantity information of the reservoir is detected.
In step S72, a spraying mode is determined based on the water amount information, and a control signal is generated according to the determined spraying mode, wherein the spraying water flow rates adopted by the different spraying modes are different.
In step S73, based on the control signal, the corresponding spraying pipeline is started to make the water supply system work according to the spraying mode, and different spraying pipelines are adapted to different spraying water flow rates.
In an optional implementation manner, when the water supply system includes the first spraying pipeline, the second spraying pipeline and the switch device, the step S73 may specifically include:
and switching on the first spraying pipeline or the second spraying pipeline based on the received control signal.
In an optional implementation manner, step S72 may specifically include:
when the water amount information is greater than or equal to a first preset threshold value, generating a first control signal;
step S73 may specifically include:
and switching on the first spraying pipeline based on the received first control signal.
In an optional implementation manner, step S72 may specifically include:
when the water amount information is smaller than a second preset threshold value, generating a second control signal;
step S73 may specifically include:
and switching on the second spraying pipeline based on the received second control signal.
In an optional implementation manner, when the water supply system further includes a first water amount monitoring device and a second water amount monitoring device, and the switching device switches on the second spraying pipeline, the water supply method further includes:
calculating the actual water consumption in a preset time period according to the water quantity values detected by the first water quantity monitoring device and the second water quantity monitoring device;
and generating an adjusting signal according to the actual water consumption in the preset time period and a preset water limit so as to adjust the working frequency of the variable frequency water pump and adjust the spraying water flow of the second spraying pipeline.
In an alternative implementation manner, the step of generating an adjustment signal according to the actual water consumption in the preset time period and a preset water limit includes:
and when the actual water consumption in the preset time period is greater than or equal to the preset water limit, generating a first adjusting signal, wherein the first adjusting signal is used for indicating to reduce the working frequency of the variable-frequency water pump until the actual water consumption in the preset time period is less than the preset water limit.
With regard to the water supply method in the above-described embodiment, the specific processes of the respective steps have been described in detail in the embodiment of the water supply system, and will not be explained in detail here.
Fig. 8 is a block diagram of one type of electronic device 800 shown in the present disclosure. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 8, electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.
The processing component 802 generally controls overall operation of the electronic device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the water supply method described in any embodiment. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operation at the device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 806 provides power to the various components of the electronic device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.
The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 may access a wireless network based on a communication standard, such as WiFi, a carrier network (such as 2G, 3G, 4G, or 5G), or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the electronic device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the water supply method described in any of the embodiments.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the electronic device 800 to perform the water supply method of any of the embodiments is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, there is also provided a computer program product comprising readable program code executable by the processor 820 of the device 800 to perform the water supply method according to any of the embodiments. Alternatively, the program code may be stored in a storage medium of the apparatus 800, which may be a non-transitory computer readable storage medium, for example, which may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Fig. 9 is a block diagram of one type of electronic device 1900 shown in the present disclosure. For example, the electronic device 1900 may be provided as a server.
Referring to fig. 9, electronic device 1900 includes a processing component 1922 further including one or more processors and memory resources, represented by memory 1932, for storing instructions, e.g., applications, executable by processing component 1922. The application programs stored in memory 1932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1922 is configured to execute instructions to perform the water supply method of any embodiment.
The electronic device 1900 may also include a power component 1926 configured to perform power management of the electronic device 1900, a wired or wireless network interface 1950 configured to connect the electronic device 1900 to a network, and an input/output (I/O) interface 1958. The electronic device 1900 may operate based on an operating system, such as Windows Server, macOSXTM, unixTM, linuxTM, freeBSDTM, or the like, stored in memory 1932.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. A water supply system for an indirect evaporative cooling unit, the water supply system comprising:
the detection device detects water quantity information of the reservoir and sends the detected water quantity information to the controller;
the controller determines a spraying mode of the spraying device based on the received water amount information, generates a control signal according to the determined spraying mode and sends the control signal to the spraying device, wherein the different spraying modes adopt different spraying water flows;
the spraying device starts a corresponding spraying pipeline based on the received control signal so as to enable the spraying device to work according to the spraying mode, and different spraying pipelines are matched with different spraying water flows;
the spraying device comprises a first spraying pipeline, a second spraying pipeline and a switch device,
the water inlet end of the first spraying pipeline is connected with the switch device, the water outlet end of the first spraying pipeline is connected with the water collecting tank, and the water collecting tank is connected with a nozzle of the water supply system through a fixed-frequency water pump;
the water inlet end of the second spraying pipeline is connected with the switch device, and the water outlet end of the second spraying pipeline is connected with the nozzle;
the switching device is further connected with the reservoir through a variable frequency water pump and is configured to conduct the first spraying pipeline or the second spraying pipeline based on the received control signal.
2. The water supply system of claim 1, wherein the control appliance body is configured to:
when the water amount information is larger than or equal to a first preset threshold value, generating a first control signal and sending the first control signal to the switch device;
the switching device is specifically configured to:
and switching on the first spraying pipeline based on the received first control signal.
3. The water supply system of claim 1, wherein the control appliance body is configured to:
when the water amount information is smaller than a second preset threshold value, generating a second control signal, and sending the second control signal to the switch device;
the switching device is specifically configured to:
and switching on the second spraying pipeline based on the received second control signal.
4. The water supply system of claim 1, wherein the switch device comprises an electrically operated three-way valve.
5. The water supply system according to any one of claims 1 to 4, further comprising a first water amount monitoring device disposed between the variable frequency water pump and the switching device, and a second water amount monitoring device disposed between the water collecting tank and the reservoir;
the controller is further connected to the first water amount monitoring device and the second water amount monitoring device, respectively, and is further configured to:
when the second spraying pipeline is conducted by the switch device, calculating the actual water consumption in a preset time period according to the water quantity values detected by the first water quantity monitoring device and the second water quantity monitoring device; and generating an adjusting signal according to the actual water consumption in the preset time period and a preset water limit so as to adjust the working frequency of the variable frequency water pump and adjust the spraying water flow of the second spraying pipeline.
6. The water supply system of claim 5, wherein the control appliance is configured to:
and when the actual water consumption in the preset time period is greater than or equal to the preset water limit, generating a first adjusting signal, wherein the first adjusting signal is used for indicating to reduce the working frequency of the variable-frequency water pump until the actual water consumption in the preset time period is less than the preset water limit.
7. A water supply method of an indirect evaporative cooling unit, which is applied to the water supply system of any one of claims 1 to 6, the water supply method comprising;
detecting water quantity information of a reservoir;
determining a spraying mode based on the water amount information, and generating a control signal according to the determined spraying mode, wherein the different spraying modes adopt different spraying water flows;
starting corresponding spraying pipelines based on the control signal so as to enable the water supply system to work according to the spraying mode, wherein different spraying pipelines are matched with different spraying water flows;
when the water supply system includes first spraying pipeline, second spraying pipeline and switching device, based on control signal, start the step of corresponding spraying pipeline, include:
and switching on the first spraying pipeline or the second spraying pipeline based on the received control signal.
8. The water supply method according to claim 7, wherein the step of determining a spray pattern based on the water amount information and generating a control signal according to the determined spray pattern comprises:
when the water amount information is greater than or equal to a first preset threshold value, generating a first control signal;
the step of turning on the first spray pipe or the second spray pipe based on the received control signal includes:
and switching on the first spraying pipeline based on the received first control signal.
9. The water supply method according to claim 7, wherein the step of determining a spray pattern based on the water amount information and generating a control signal according to the determined spray pattern comprises:
when the water amount information is smaller than a second preset threshold value, generating a second control signal;
the step of turning on the first spray pipe or the second spray pipe based on the received control signal includes:
and switching on the second spraying pipeline based on the received second control signal.
10. The water supply method according to any one of claims 7 to 9, wherein when the water supply system further includes a first water amount monitoring device and a second water amount monitoring device, and the switching device turns on the second shower line, the water supply method further includes:
calculating the actual water consumption in a preset time period according to the water quantity values detected by the first water quantity monitoring device and the second water quantity monitoring device;
and generating an adjusting signal according to the actual water consumption in the preset time period and a preset water limit so as to adjust the working frequency of the variable frequency water pump and adjust the spraying water flow of the second spraying pipeline.
11. The method of claim 10, wherein the step of generating an adjustment signal based on the actual water usage over the predetermined time period and a predetermined water limit comprises:
and when the actual water consumption in the preset time period is greater than or equal to the preset water limit, generating a first adjusting signal, wherein the first adjusting signal is used for indicating to reduce the working frequency of the variable-frequency water pump until the actual water consumption in the preset time period is less than the preset water limit.
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| CN202011629439.2A CN112814071B (en) | 2020-12-30 | 2020-12-30 | Water supply system and water supply method of indirect evaporative cooling unit |
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| BR8100517Y1 (en) * | 2001-03-30 | 2009-05-05 | disposal introduced in evaporative cooler. | |
| GB2455332A (en) * | 2007-12-05 | 2009-06-10 | Oxycom Beheer Bv | A combined heat exchange system supplying cooled air |
| CN201811503U (en) * | 2010-08-12 | 2011-04-27 | 杭州梵迪网络科技有限公司 | Auxiliary water cooling device of air source wind-cooling heat exchanger |
| US9814793B2 (en) * | 2014-01-17 | 2017-11-14 | DI-STEEM Corporation | Staged dry out control for evaporative media systems |
| CN204435483U (en) * | 2015-01-21 | 2015-07-01 | 内蒙古山路光伏应用技术研究有限公司 | Plant's photovoltaic automatic spraying device |
| CN105222250B (en) * | 2015-08-27 | 2018-05-15 | 西安工程大学 | Suitable for open parking ground and the evaporation cooling spray system of monitoring booth |
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| CN107894043B (en) * | 2017-10-09 | 2019-11-26 | 珠海格力电器股份有限公司 | A kind of vaporization type condensing system and its control method, device |
| CN207555855U (en) * | 2017-12-06 | 2018-06-29 | 张畅 | Spray cooling system |
| CN208536229U (en) * | 2018-07-05 | 2019-02-22 | 维谛技术有限公司 | A kind of wet-membrane humidifier and precision air conditioner unit |
| CN208871769U (en) * | 2018-08-17 | 2019-05-17 | 中国华冶科工集团有限公司 | Assembled board house cooling device |
| CN209147324U (en) * | 2018-11-14 | 2019-07-23 | 南京博森科技有限公司 | A kind of spinning and weaving workshop fountain air-conditioning device for being convenient for observation liquid level |
| CN110243040B (en) * | 2019-06-14 | 2021-06-11 | 北京百度网讯科技有限公司 | Indirect evaporative cooling unit and water supply system and method thereof |
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| CN110864389A (en) * | 2019-11-28 | 2020-03-06 | 兰州交通大学 | Photovoltaic cloud and mist air conditioning system |
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