CN211926629U - Cooling tower fan control system - Google Patents
Cooling tower fan control system Download PDFInfo
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- CN211926629U CN211926629U CN201922493414.3U CN201922493414U CN211926629U CN 211926629 U CN211926629 U CN 211926629U CN 201922493414 U CN201922493414 U CN 201922493414U CN 211926629 U CN211926629 U CN 211926629U
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Abstract
The embodiment of the application provides a cooling tower fan control system, includes: the system comprises a controller, an outdoor temperature and humidity sensor and a cooling tower; the controller is electrically connected with the outdoor temperature and humidity sensor and the fan in the cooling tower; the outdoor temperature and humidity sensor is arranged outside the cooling tower; the controller is used for determining a target value of the outlet water temperature of the cooling tower according to the outdoor wet bulb temperature obtained from the outdoor temperature and humidity sensor and controlling the rotating speed of the fan according to the target value of the outlet water temperature. According to the technical scheme, the outdoor temperature and humidity sensor automatically tracks the change of the outdoor wet bulb temperature, the controller calibrates the target value of the water outlet temperature of the cooling tower in real time according to the meteorological conditions to enable the target value of the water outlet temperature to be close to the limit cooling capacity of the cooling tower at the current wet bulb temperature, and then the rotating speed of the fan is controlled according to the target value of the water outlet temperature, so that the cooling tower can exert the maximum cooling capacity, the temperature of cooling water is reduced, and the energy efficiency ratio of a cooling unit is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of air conditioners, in particular to a cooling tower fan control system.
Background
The temperature of the cooling water in the air-conditioning cooling water system affects the energy consumption of the cooling unit. In order to control the temperature of the cooling water within a certain range, the air-conditioning cooling water system controls the temperature of the cooling water by controlling the fan frequency of the cooling tower according to the requirement. At present, the main control modes are as follows: the target value of the outlet water temperature of the cooling tower is set artificially, a controller in the air-conditioning cooling water system modulates the frequency of a fan of the cooling tower according to the target value of the outlet water temperature, and the cooling water temperature is controlled at the set target value of the outlet water temperature so as to meet the requirement of a water chiller on the cooling water temperature.
However, in this control method, the target value of the outlet water temperature of the cooling tower is set and changed empirically, and is highly dependent on workers and is prone to deviation. In addition, the target value of the outlet water temperature of the cooling tower can be influenced by different meteorological conditions, and the high-frequency operation of a fan of the cooling tower can be caused due to the unreasonable set temperature in certain scenes, so that the electric energy waste is caused. For example, in the case of a high humidity in summer, if the temperature setting value is not adjusted, the cooling tower fan still operates at a high frequency, which causes electric energy waste; for example, in a case where the water temperature is relatively low such as cloudy or rainy, if the temperature setting value is not adjusted, the fan may be operated excessively, which may result in waste of electric energy.
SUMMERY OF THE UTILITY MODEL
In view of the above, an embodiment of the present disclosure provides a cooling tower fan control system, which is used to overcome the problem of power waste caused by high frequency operation of a cooling fan due to unreasonable target value setting of the cooling tower outlet water temperature in the related art.
The embodiment of the application provides a cooling tower fan control system, it includes: the system comprises a controller, an outdoor temperature and humidity sensor and a cooling tower;
the controller is electrically connected with the outdoor temperature and humidity sensor and the fan in the cooling tower;
the outdoor temperature and humidity sensor is arranged outside the cooling tower and used for detecting the outdoor wet bulb temperature outside the cooling tower;
the controller is used for determining a target outlet water temperature value of the cooling tower according to the outdoor wet bulb temperature obtained from the outdoor temperature and humidity sensor and controlling the rotating speed of the fan according to the target outlet water temperature value.
Optionally, in an embodiment of the present application, the cooling tower blower control system further includes a temperature sensor, where the temperature sensor is disposed on a water supply pipeline of the cooling tower, and is used for detecting an outlet water temperature of the cooling tower;
the controller is electrically connected with the temperature sensor and used for controlling the rotating speed of the fan according to the outlet water temperature target value and the outlet water temperature obtained from the temperature sensor.
Optionally, in an embodiment of the present application, the controller further includes a rotation speed control module, where the rotation speed control module is electrically connected to the fan, and is configured to control a rotation speed of the fan to decrease when the target value of the outlet water temperature is greater than the outlet water temperature; and when the target value of the water outlet temperature is smaller than the water outlet temperature, controlling the rotation speed of the fan to rise.
Optionally, in an embodiment of the application, the controller further includes a first temperature setting module, the first temperature setting module is electrically connected to the outdoor temperature and humidity sensor, and is configured to set the sum of the outdoor wet bulb temperature and the corresponding approach value as the target value of the outlet water temperature, where the outdoor wet bulb temperature is greater than a first preset temperature.
Optionally, in an embodiment of the present application, the first preset temperature is 7 ℃.
Optionally, in an embodiment of the application, the controller further includes a second temperature setting module, where the second temperature setting module is electrically connected to the outdoor temperature and humidity sensor, and is configured to set the target value of the outlet water temperature to 11 ℃ when the outdoor wet bulb temperature is less than or equal to a second preset temperature.
Optionally, in an embodiment of the present application, the cooling tower fan control system further includes an input device electrically connected to the controller, and the approximation value is obtained by detecting a user operation by the input device.
Optionally, in an embodiment of the present application, the cooling tower fan control system further includes a storage device electrically connected to the controller, where the storage device stores a mapping relationship between wet bulb temperature and an approximation value, and the approximation value is obtained by the controller according to the outdoor wet bulb temperature and the mapping relationship.
Optionally, in an embodiment of the present application, the cooling tower fan control system further includes a fan frequency converter, the fan frequency converter is electrically connected to the controller and the fan, and the controller is configured to control the rotation speed of the fan by controlling the operating frequency of the fan frequency converter.
Optionally, in an embodiment of the present application, the cooling tower fan control system further includes a spraying device and a water collecting device, the spraying device is disposed below the fan, the water collecting device is disposed below the spraying device, the spraying device is communicated with a water return pipeline of the cooling tower, and the water supply pipeline is communicated with the water collecting device.
In this application embodiment, cooling tower fan control system includes: the system comprises a controller, an outdoor temperature and humidity sensor and a cooling tower; the controller is electrically connected with the outdoor temperature and humidity sensor and the fan in the cooling tower; the outdoor temperature and humidity sensor is arranged outside the cooling tower and used for detecting the outdoor wet bulb temperature outside the cooling tower; the controller is used for determining a target value of the outlet water temperature of the cooling tower according to the outdoor wet bulb temperature obtained from the outdoor temperature and humidity sensor and controlling the rotating speed of the fan according to the target value of the outlet water temperature. According to the technical scheme, the outdoor temperature and humidity sensor automatically tracks weather condition influence parameters, namely the change of the outdoor wet bulb temperature, the controller calibrates the water outlet temperature target value of the cooling tower in real time according to the weather conditions, so that the water outlet temperature target value is close to the limit cooling capacity of the cooling tower at the current wet bulb temperature, and then the rotating speed of the fan is controlled according to the water outlet temperature target value, so that the cooling tower can exert the maximum cooling capacity, the cooling water temperature is reduced, and the energy efficiency ratio of the cooling unit is improved.
Drawings
Fig. 1 is a schematic structural diagram of a cooling tower fan control system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a controller according to an embodiment of the present application;
fig. 3 is a graph illustrating a mapping relationship between an approximation value and an outdoor wet bulb temperature according to an embodiment of the present disclosure.
Description of the reference symbols
1: controller
2: outdoor temperature and humidity sensor
3: cooling tower
4: fan blower
5: fan frequency converter
6: temperature sensor
7: spraying device
8: water collecting device
Detailed description of the invention
The cooling tower fan control system provided by the embodiment of the application is described in detail below with reference to the accompanying drawings and specific embodiments. Features in the following embodiments may be combined with each other without conflict.
Example one
Fig. 1 is a schematic structural diagram of a cooling tower fan control system according to an embodiment of the present disclosure. As shown in fig. 1, the cooling tower fan control system of the present embodiment may include: the system comprises a controller 1, an outdoor temperature and humidity sensor 2 and a cooling tower 3. The controller 1 is electrically connected with the outdoor temperature and humidity sensor 2, and the controller 1 is electrically connected with the fan 4 in the cooling tower 3. The outdoor temperature and humidity sensor 2 is disposed outside the cooling tower 3 and is configured to detect an outdoor wet bulb temperature outside the cooling tower 3. The controller 1 is configured to determine a target outlet water temperature value of the cooling tower 3 according to the outdoor wet bulb temperature obtained from the outdoor temperature and humidity sensor 2, and control the rotation speed of the fan 4 according to the target outlet water temperature value.
Fig. 2 is a schematic structural diagram of a controller of a cooling tower fan control system according to an embodiment of the present disclosure. As shown in fig. 2, the controller 1 further includes a rotation speed control module 11, a first temperature setting module 12, and a second temperature setting module 13, where the rotation speed control module 11 is electrically connected to the fan 4, and is configured to control the rotation speed of the fan to decrease when the target value of the outlet water temperature is greater than the outlet water temperature; and when the target value of the water outlet temperature is smaller than the water outlet temperature, controlling the rotation speed of the fan to rise. The first temperature setting module 12 is electrically connected to the outdoor temperature and humidity sensor 2, and is configured to set a sum of the outdoor wet bulb temperature and a corresponding approach value as the target outlet water temperature value when the outdoor wet bulb temperature is greater than a first preset temperature, where the first preset temperature is 7 ℃. The second temperature setting module 13 is electrically connected to the outdoor temperature and humidity sensor 2, and is configured to set a sum of the outdoor wet bulb temperature and a corresponding approach value as the target outlet water temperature value when the outdoor wet bulb temperature is greater than a first preset temperature, where the first preset temperature is 7 ℃.
In the embodiment of the present application, the fan 4 may be installed on the top of the cooling tower 3, and the main function of the fan 4 is to accelerate the flow of air in the cooling tower 3, accelerate the heat exchange between the air and water, and take away heat.
Alternatively, in some embodiments of the present application, the fan 4 may be an axial fan.
Optionally, in an embodiment of the present application, the cooling tower fan control system further includes a fan frequency converter 5, the fan frequency converter 5 is electrically connected to the controller 1 and the fan 4, and the controller 1 is configured to control the rotation speed of the fan 4 by controlling the operating frequency of the fan frequency converter 5.
It should be understood that the fan inverter 5 is used for controlling the rotation speed of the fan 4, and when the operation frequency of the fan inverter 5 is increased, the rotation speed of the fan 4 is increased, and the faster the flow speed of the air in the cooling tower 3 is, the cooling effect is increased. When the operating frequency of the fan frequency converter 5 is reduced, the rotating speed of the fan 4 is reduced, the flowing speed of the air in the cooling tower 3 is reduced, and the cooling effect is reduced.
In the embodiment of the present application, the outdoor temperature and humidity sensor 2 may be disposed outside the cooling tower 3, for example, beside the cooling tower 3, and be configured to detect the outdoor wet bulb temperature outside the cooling tower 3 in real time, and record the outdoor wet bulb temperature detected in real time. The outdoor wet bulb temperature is one of the important parameters of a cooling tower and represents the limit temperature to which water can theoretically be cooled in the cooling tower. The outdoor wet bulb temperature changes along with the change of time and climate. As a collection method of the outdoor wet bulb temperature, for example, the outdoor temperature and the relative humidity may be obtained by an outdoor temperature and humidity sensor, and then the outdoor wet bulb temperature is determined according to the obtained outdoor temperature and relative humidity.
In the embodiment of the application, outdoor temperature and humidity sensor can detect the outside outdoor wet bulb temperature of cooling tower in the outside of cooling tower, namely can be with the automatic tracking meteorological condition, the controller is according to the water outlet temperature target value of the meteorological condition calibration cooling tower that outdoor temperature and humidity sensor provided, make water outlet temperature target value be close to the limit cooling capacity under the different wet bulb temperatures of cooling tower, then the controller is according to the rotational speed of fan 4 in this water outlet temperature target value control cooling tower, the flow of air in the cooling tower is accelerated, make the cooling tower exert the maximum cooling capacity, reduce cooling water temperature, improve cooling unit energy efficiency ratio.
Optionally, in an embodiment of the present application, the controller 1 is configured to set a sum of the outdoor wet bulb temperature and the corresponding approximation value as the outlet water temperature target value when the outdoor wet bulb temperature is greater than the first preset temperature.
In particular, in some application scenarios requiring continuous cooling throughout the year, the cooling tower needs to operate in different control modes. For example, in a data center application scenario, the refrigeration system may operate in a winter operating mode, a transitional season operating mode, or a summer operating mode. When the outdoor wet bulb temperature is higher than the first preset temperature, namely the refrigeration system operates in a transition season operation mode or a summer operation mode, under the two operation modes, the sum of the outdoor wet bulb temperature and the corresponding approach value can be set as a cooling tower outlet water temperature target value, and when the outdoor wet bulb temperature is lower than the first preset temperature, namely the winter operation mode, under the operation mode, the cooling tower outlet water temperature target value can be determined by setting a second preset temperature.
It should be understood that the approximation value is the difference between the outlet water temperature of the cooling tower and the wet bulb temperature, and in practice, the outlet water temperature of the cooling tower is always higher than the outdoor wet bulb temperature due to the limited heat exchange area of the packing of the cooling tower 3, and the like. There is a correspondence between the outdoor wet bulb temperature and the proximity value. The corresponding proximity value may refer to a proximity value under the current outdoor wet bulb temperature condition. Fig. 3 is a mapping relationship diagram of outdoor wet bulb temperature and degree of approximation value provided in the embodiment of the present application. As shown in fig. 3, the approach values are significantly different in the case of different outdoor wet bulb temperatures. As the outdoor wet bulb temperature increases, the approach value decreases. Generally, in the case of high humidity in summer, the approximation value may be 3 ℃ to 4 ℃. The approximation value is not a fixed value, and in the practical application process, the approximation value can be selected according to the approximation values of the cooling tower given by a manufacturer under different working conditions. The sum of the outdoor wet bulb temperature and the preset approximant value is set as the target value of the outlet water temperature, so that the target value of the outlet water temperature is close to the limit cooling capacity of the cooling tower at the current outdoor wet bulb temperature, and the cooling tower can exert the maximum cooling capacity.
In addition, the outdoor wet bulb temperature influences the outlet water temperature of the cooling tower, and the higher the outdoor wet bulb temperature is, the higher the lower limit outlet water temperature of the cooling tower is. When the wet bulb temperature is relatively high, for example, in a transition season or summer season, the lower limit outlet water temperature of the cooling tower is relatively high, and in this case, if the target outlet water temperature value is set unreasonably, for example, set low, the fan 4 may always operate at full frequency, which results in waste of electric energy. Therefore, the current outdoor wet bulb temperature can be judged according to whether the outdoor wet bulb temperature is larger than the first preset temperature or not, and when the current outdoor wet bulb temperature is higher, the sum of the outdoor wet bulb temperature and the preset approximation value is set as the target value of the outlet water temperature, so that the electric energy can be saved more effectively, and the energy efficiency ratio of the cooling tower is improved.
Two implementation manners are listed below to describe how to obtain the preset approximant value, which, of course, is only an example and does not represent that the embodiment is limited thereto.
In an alternative embodiment, the cooling tower fan control system further comprises an input device electrically connected to the controller 1, and the approximation value is obtained by detecting a user operation by the input device.
In this implementation, for example, a user may refer to a database of the approach values under various operating conditions provided by a cooling tower manufacturer, and manually set the approach values according to the current outdoor wet bulb temperature, so that the user can flexibly set the approach values according to actual requirements.
In an optional implementation manner, the cooling tower fan control system further includes a storage device electrically connected to the controller 1, where the storage device stores a mapping relationship between the outdoor wet bulb temperature and an approximation value, and the preset approximation value is obtained by the controller 1 according to the outdoor wet bulb temperature and the mapping relationship.
The mapping relation between the outdoor wet bulb temperature and the approximation value can be set according to the approximation value under various working conditions provided by a manufacturer and stored in a storage device in advance, the controller 1 is electrically connected with the storage device, and when the controller is in actual use, the controller 1 can automatically capture and update the outdoor wet bulb temperature from the storage device according to the outdoor wet bulb temperature obtained from the outdoor temperature and humidity sensor 2. In the implementation mode, the cooling tower can automatically complete the setting of the target value of the outlet water temperature without human intervention, and the fully automatic operation is realized.
Optionally, the first preset temperature may be 7 ℃, and other temperature values may also be adopted according to actual needs, which is not limited in this embodiment.
Optionally, in another embodiment of the present application, the controller 1 is configured to set the target value of the outlet water temperature to 11 ℃ when the outdoor wet bulb temperature is less than or equal to the second preset temperature.
The second preset temperature may be the same as the first preset temperature, that is, the second preset temperature may be 7 ℃, or other temperature values may be adopted according to actual needs, which is not limited in this embodiment.
Specifically, when the outdoor wet bulb temperature is low, the refrigerating machine is not used for refrigerating, but the cooling water from the cooling tower directly cools the chilled water through the plate heat exchanger to provide a constant chilled water temperature requirement, so that free refrigeration is realized. At the moment, the water chilling unit is not started any more, and the requirement on cooling water does not need to be reduced to the limit temperature of the cooling tower, and the requirement that the outlet water temperature of the cooling water of the cooling tower reaches 11 ℃ can be calculated according to the temperature of 12 ℃ required by chilled water. Therefore, the target value of the outlet water temperature can be directly set to 11 ℃, and at the moment, the rotating speed of the fan is low due to the low wet bulb temperature and is in a non-full-frequency state, so that the energy-saving operation is realized.
At this time, also taking the data center as an example, when the outdoor wet bulb temperature is less than or equal to the second preset temperature, the cooling tower may operate in a winter operation mode, and in this operation mode, the target value of the outlet water temperature may be directly set to 11 ℃, and the fan is not full of frequency, so as to save energy.
In some embodiments of the present application, the cooling tower blower control system may further include a temperature sensor 6, and the temperature sensor 6 is disposed on the water supply pipeline of the cooling tower 3 for detecting the temperature of the outlet water of the cooling tower 3.
The controller 1 is electrically connected to the temperature sensor 6, and is configured to control the rotation speed of the fan 4 according to the target value of the outlet water temperature and the outlet water temperature obtained from the temperature sensor 6.
Optionally, in an embodiment of the present application, the controller 1 is configured to control the rotation speed of the fan to decrease when the target value of the outlet water temperature is greater than the outlet water temperature; and when the target value of the water outlet temperature is lower than the water outlet temperature, controlling the rotation speed of the fan to increase. The controller obtains the water outlet temperature from the temperature sensor, compares the water outlet temperature with the determined water outlet temperature target value, and improves the accuracy of controlling the rotating speed of the fan by introducing negative feedback.
Optionally, in an embodiment of the present application, the cooling tower fan control system may further include a spraying device 7 and a water collecting device 8, the spraying device 7 is disposed below the fan 4, the water collecting device 8 is disposed below the spraying device 7, the spraying device 7 is communicated with a water return pipeline of the cooling tower 3, and the water supply pipeline is communicated with the water collecting device 8. Wherein, the spraying device 7 can comprise a plurality of nozzles spraying downwards, and the nozzles can be arranged side by side at intervals.
Specifically, spray set 7 sets up in the below of fan 4, and spray set 7 can include a plurality of shower nozzle (not shown) that sprays downwards, and the shower nozzle can set up by the interval side by side, and cooling water gets into spray set through the return water pipeline of cooling tower 4, carries out the filler in the cooling tower through the shower nozzle and sprays. A water collecting device 8 is arranged below the spraying device 7, the water collecting device 8 is communicated with one end of a water supply channel of the cooling tower, and cooling water in the water collecting device flows out through the water supply channel.
For convenience of understanding, the following describes in detail the fan control of the control method of the cooling tower fan control system provided in the embodiments of the present application with reference to specific embodiments.
Firstly, the controller 1 can obtain the outdoor wet bulb temperature from the outdoor temperature and humidity sensor 2;
then, the controller 1 may determine a target outlet water temperature value of the cooling tower 3 according to the outdoor wet bulb temperature, and control the rotation speed of the fan 4 according to the target outlet water temperature value.
Optionally, the determining, by the controller 1, the target outlet water temperature value of the cooling tower 3 according to the outdoor wet bulb temperature may include: and when the outdoor wet bulb temperature is higher than the first preset temperature, setting the sum of the outdoor wet bulb temperature and the corresponding approximation value as a water outlet temperature target value.
Further, the first preset temperature may be 7 ℃.
Further, the approximation value may be obtained by detecting a user operation by an input device electrically connected to the controller 1.
Further, the approximation value may be obtained by the controller 1 from a storage device electrically connected to the controller 1 according to the outdoor wet bulb temperature, wherein the storage device stores a mapping relationship between the wet bulb temperature and the approximation value.
Optionally, the determining, by the controller 1, the target outlet water temperature value of the cooling tower 3 according to the outdoor wet bulb temperature may include: and setting the target outlet water temperature value to be 11 ℃ when the outdoor wet bulb temperature is less than or equal to a second preset temperature.
The second preset temperature may be the same as the first preset temperature, or may be lower than the first preset temperature. For example, when the first preset temperature may be 7 ℃, the second preset temperature may be 7 ℃ or less than 7 ℃.
Optionally, the controller 1 controls the rotation speed of the fan according to the target value of the outlet water temperature, and may include: the controller 1 controls the operation frequency of a fan frequency converter 5 connected with the fan 4 according to the outlet water temperature target value, and controls the rotating speed of the fan 4 by controlling the operation frequency of the fan frequency converter 5.
Optionally, the controller 1 may further obtain the temperature of the outlet water of the cooling tower 3 from a temperature sensor 6, and the temperature sensor 6 may be disposed on the water supply pipeline of the cooling tower 3;
then, the controller 1 controls the rotation speed of the fan 4 according to the outlet water temperature target value and the outlet water temperature acquired from the temperature sensor 6.
Optionally, the controlling the rotation speed of the fan 4 according to the target value of the outlet water temperature and the outlet water temperature obtained from the temperature sensor 6 may include: when the target value of the water outlet temperature is higher than the water outlet temperature, controlling the rotating speed of the fan to be reduced; and when the target value of the water outlet temperature is lower than the water outlet temperature, controlling the rotation speed of the fan to increase.
Based on the control mode, a controller in the cooling tower fan control system automatically tracks and collects outdoor wet bulb temperature according to an outdoor temperature and humidity sensor, calibrates a water outlet temperature target value of the cooling tower in real time to enable the water outlet temperature target value to be close to the limit cooling capacity of the cooling tower at the current wet bulb temperature, and then controls the rotating speed of a fan according to the water outlet temperature target value to enable the cooling tower to exert the maximum cooling capacity, reduce the temperature of cooling water and improve the energy efficiency ratio of a cooling unit.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A cooling tower fan control system, comprising: the system comprises a controller, an outdoor temperature and humidity sensor and a cooling tower;
the controller is electrically connected with the outdoor temperature and humidity sensor and the fan in the cooling tower;
the outdoor temperature and humidity sensor is arranged outside the cooling tower and used for detecting the outdoor wet bulb temperature outside the cooling tower;
the controller is used for determining a target outlet water temperature value of the cooling tower according to the outdoor wet bulb temperature obtained from the outdoor temperature and humidity sensor and controlling the rotating speed of the fan according to the target outlet water temperature value.
2. The cooling tower fan control system of claim 1, further comprising a temperature sensor disposed on a water supply pipeline of the cooling tower for detecting an outlet water temperature of the cooling tower;
the controller is electrically connected with the temperature sensor and used for controlling the rotating speed of the fan according to the outlet water temperature target value and the outlet water temperature obtained from the temperature sensor.
3. The cooling tower fan control system of claim 2,
the controller also comprises a rotating speed control module which is electrically connected with the fan and used for controlling the rotating speed of the fan to be reduced when the water outlet temperature target value is greater than the water outlet temperature; and when the target value of the water outlet temperature is smaller than the water outlet temperature, controlling the rotation speed of the fan to rise.
4. The cooling tower fan control system of claim 1,
the controller further comprises a first temperature setting module, wherein the first temperature setting module is electrically connected with the outdoor temperature and humidity sensor and used for setting the sum of the outdoor wet bulb temperature and the corresponding approach value as the outlet water temperature target value when the outdoor wet bulb temperature is higher than a first preset temperature, and the first preset temperature is 7 ℃.
5. The cooling tower fan control system of claim 4,
the controller further comprises a second temperature setting module, wherein the second temperature setting module is electrically connected with the outdoor temperature and humidity sensor and used for setting the target value of the outlet water temperature to 11 ℃ when the outdoor wet bulb temperature is less than or equal to a second preset temperature.
6. The cooling tower fan control system of claim 4 further comprising an input device electrically connected to the controller, the approximation value being obtained by the input device detecting a user operation.
7. The cooling tower fan control system of claim 4 further comprising a memory device electrically connected to the controller, the memory device storing a mapping of wet bulb temperature to an approximation value obtained by the controller based on the outdoor wet bulb temperature and the mapping.
8. The cooling tower fan control system of claim 1, further comprising a fan inverter electrically coupled to the controller and the cooling tower fan, the controller configured to control a rotational speed of the cooling tower fan by controlling an operating frequency of the fan inverter.
9. The cooling tower fan control system of claim 2, comprising a spray device disposed below the cooling tower fan and a water collection device disposed below the spray device, the spray device being in communication with a water return conduit of the cooling tower and the water collection device being in communication with the water supply conduit.
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| CN201922493414.3U CN211926629U (en) | 2019-12-31 | 2019-12-31 | Cooling tower fan control system |
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| CN201922493414.3U CN211926629U (en) | 2019-12-31 | 2019-12-31 | Cooling tower fan control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556485A (en) * | 2020-12-29 | 2021-03-26 | 昆山璟赫机电工程有限公司 | Operation control system and operation control method for cooling tower of ice machine |
| CN112770606A (en) * | 2020-12-30 | 2021-05-07 | 曙光数创电子设备科技发展(青岛)有限公司 | Temperature control method and device for energy conservation of data center and electronic equipment |
| CN113267061A (en) * | 2021-05-14 | 2021-08-17 | 湘潭大学 | Cooling tower control system and control method |
-
2019
- 2019-12-31 CN CN201922493414.3U patent/CN211926629U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556485A (en) * | 2020-12-29 | 2021-03-26 | 昆山璟赫机电工程有限公司 | Operation control system and operation control method for cooling tower of ice machine |
| CN112770606A (en) * | 2020-12-30 | 2021-05-07 | 曙光数创电子设备科技发展(青岛)有限公司 | Temperature control method and device for energy conservation of data center and electronic equipment |
| CN112770606B (en) * | 2020-12-30 | 2023-03-28 | 曙光数创电子设备科技发展(青岛)有限公司 | Temperature control method and device for energy conservation of data center and electronic equipment |
| CN113267061A (en) * | 2021-05-14 | 2021-08-17 | 湘潭大学 | Cooling tower control system and control method |
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