CN114608182B - Cooling tower control method and control system - Google Patents
Cooling tower control method and control system Download PDFInfo
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- CN114608182B CN114608182B CN202011397613.5A CN202011397613A CN114608182B CN 114608182 B CN114608182 B CN 114608182B CN 202011397613 A CN202011397613 A CN 202011397613A CN 114608182 B CN114608182 B CN 114608182B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application provides a cooling tower control method and a control system, which are characterized in that environmental temperature and humidity data of a space where each cooling tower is located in a central air conditioning system and total water demand data of cooling water of a host in the central air conditioning system are obtained, cooling tower starting number data is calculated according to the total water demand data of the cooling water, the starting number of the cooling towers is controlled to be increased or decreased according to the cooling tower starting number data, an optimal cooling water supply temperature value is calculated according to the environmental temperature and humidity data, and a cooling tower fan rotating speed output value is controlled and adjusted according to the optimal cooling water supply temperature value. The cooling tower control method and the control system can intelligently and efficiently control the operation of the cooling tower, fully utilize the heat exchange capacity and the heat exchange area of the cooling tower by using the optimal control strategy, and realize the lowest total energy consumption of the system.
Description
Technical Field
The disclosure relates to the technical field of refrigeration equipment control, in particular to a cooling tower control method and a cooling tower control system.
Background
The cooling tower is widely applied to a water-cooling central air-conditioning system and an industrial circulating water system, and is often selected according to the maximum load demand at the beginning of design, and in practical application, the heat exchange capacity and the heat exchange area of the cooling tower are not fully utilized due to the lack of an optimal control strategy, so that energy consumption is wasted.
The relatively common control thinking of the existing cooling tower system is that: the number of operation stages and the speed of the fans are adjusted according to the set water supply temperature of the cooling water, but a reasonable and efficient calculation method for the water supply temperature set value of the cooling tower is lacked, the manual setting method adopted generally cannot be matched with the heat exchange capacity of the cooling tower, and the effect of lowest energy consumption of the system is difficult to achieve.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
It is an object of the present disclosure to provide a cooling tower control method and control system for overcoming, at least to some extent, the problem that the heat exchange capability of the cooling tower cannot be automatically matched due to the limitations and drawbacks of the related art, such that it is difficult to achieve the minimum energy consumption of the system.
According to one aspect of the present disclosure, there is provided a cooling tower control method including:
acquiring environmental temperature and humidity data of a space where each cooling tower is located in a central air conditioning system;
acquiring total water quantity demand data of cooling water of a host in a central air conditioning system;
calculating cooling tower starting number data according to the cooling water total water demand data, and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data;
and calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and controlling and adjusting a cooling tower fan rotating speed output value according to the optimal cooling water supply temperature value.
In an exemplary embodiment of the present disclosure, further comprising: and acquiring water inlet temperature data and water outlet temperature data of the cooling tower, calculating a water inlet temperature adjustment value of a host according to the water inlet temperature data and the water outlet temperature data, and adjusting and controlling the opening of a bypass valve connected between a water inlet end and a water outlet end of the cooling tower through the water inlet temperature adjustment value of the host.
In an exemplary embodiment of the present disclosure, icing detection data of an air inlet window of the cooling tower is obtained, and whether a reverse deicing mode of the cooling tower fan needs to be started is determined according to the icing detection data.
In an exemplary embodiment of the present disclosure, further comprising: and acquiring fault data of the cooling tower and the cooling tower fan and automatically sending out an alarm prompt according to the fault data.
According to one aspect of the present disclosure, there is provided a cooling tower control system comprising:
the environment temperature and humidity data acquisition module is used for acquiring environment temperature and humidity data of the space where each cooling tower is located in the central air conditioning system;
the cooling water total water demand data acquisition module is used for acquiring cooling water total water demand data of a host in the central air conditioning system;
the cooling tower number control module is used for calculating cooling tower starting number data according to the cooling water total water demand data and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data;
and the fan rotating speed control module is used for calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data and controlling and adjusting a cooling tower fan rotating speed output value according to the optimal cooling water supply temperature value.
In an exemplary embodiment of the present disclosure, further comprising:
the icing detection module is used for acquiring icing detection data of an air inlet window of the cooling tower;
and the deicing control module is used for judging whether a reverse deicing mode of the cooling tower fan needs to be started according to the icing detection data.
In an exemplary embodiment of the present disclosure, further comprising:
the fault detection module is used for acquiring fault data of the cooling tower and the cooling tower fan;
and the alarm module is used for automatically sending out alarm prompts according to the fault data.
According to one aspect of the present disclosure, there is provided an electronic device including:
a memory; and
a processor coupled to the memory, the processor configured to execute the cooling tower control method as described above based on instructions stored in the memory.
According to one aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the cooling tower control method as described above.
According to the embodiment of the disclosure, the environmental temperature and humidity data of the space where each cooling tower is located in the central air conditioning system and the total water demand data of the cooling water of the host machine in the central air conditioning system are obtained, the cooling tower opening number data is calculated according to the total water demand data of the cooling water, the starting number of the cooling towers is controlled to be increased or decreased according to the cooling tower opening number data, the optimal cooling water supply temperature value is calculated according to the environmental temperature and humidity data, and the cooling tower fan rotating speed output value is controlled and adjusted according to the optimal cooling water supply temperature value. The cooling tower control method and the control system can intelligently and efficiently control the operation of the cooling tower, fully utilize the heat exchange capacity and the heat exchange area of the cooling tower by using the optimal control strategy, and realize the lowest total energy consumption of the system.
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 disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 schematically shows a flowchart of a cooling tower control method 100 according to a first embodiment of the present disclosure.
Fig. 2 schematically illustrates a flow chart of a cooling tower control method 200 in a second embodiment of the present disclosure.
Fig. 3 schematically shows a flow chart of a cooling tower control method 300 according to a third embodiment of the present disclosure.
Fig. 4 schematically shows a flow chart of a cooling tower control method 400 according to a fourth embodiment of the present disclosure.
Fig. 5 schematically illustrates a schematic diagram of a cooling tower control system 500 implementing control in a central air conditioning system/industrial circulating water system in an exemplary embodiment of the present disclosure.
Fig. 6 schematically illustrates a schematic diagram of a cooling tower control system 500 in one embodiment of the present disclosure.
Fig. 7 schematically illustrates a schematic diagram of a cooling tower control system 900 in another embodiment of the present disclosure.
Fig. 8 schematically illustrates a block diagram of an electronic device 800 in an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the aspects of the disclosure may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.
Furthermore, the drawings are only schematic illustrations of the present disclosure, in which the same reference numerals denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
The following describes example embodiments of the present disclosure in detail with reference to the accompanying drawings.
Fig. 1 schematically shows a flowchart of a cooling tower control method 100 according to a first embodiment of the present disclosure.
Referring to fig. 1, a cooling tower control method 100 may include:
step S102, acquiring environmental temperature and humidity data of a space where each cooling tower in the central air conditioning system is located;
step S104, obtaining the total water demand data of the cooling water of the host in the central air conditioning system;
step S106, calculating cooling tower starting number data according to the cooling water total water demand data, and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data;
and S108, calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and controlling and adjusting a cooling tower fan rotating speed output value according to the optimal cooling water supply temperature value.
Next, each step of the cooling tower control method 100 will be described in detail.
In step S102, environmental temperature and humidity data of a space where each cooling tower in the central air conditioning system is located is obtained.
The cooling tower is a device which uses water as a circulating coolant, absorbs heat from a system and discharges the heat to the atmosphere so as to reduce the water temperature; the cold is an evaporation heat-dissipating device which utilizes the principles of evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like of heat taken away by evaporation heat generated in industry or refrigeration air conditioner to reduce water temperature by utilizing the heat exchange after water is in flowing contact with air to generate steam, so as to ensure the normal operation of a system. Cooling towers are typically installed outdoors, such as on the roof of a house. In step S102, a temperature and humidity sensor is disposed on a roof of the cooling tower to obtain environmental temperature and humidity data of a space where the cooling tower is located, and the environmental temperature and humidity data is used for calculating a wet bulb temperature of the cooling tower. Wet bulb temperature represents the lowest temperature that water can reach by evaporation at a certain point for a certain time. I.e. the lowest temperature to which the water may be cooled in the cooling tower, i.e. the lowest limit value for the outlet water temperature of the cooling tower. The outlet water temperature of the cooling tower cannot be practically equal to or lower than the wet bulb temperature, and is generally higher than the wet bulb temperature by more than 4 ℃, namely, the approximation degree is more than or equal to 4 ℃. The smaller the approximation, the more difficult it is to reach. The determination of the wet bulb temperature of the cooling tower is closely related to the setting of the optimal cooling temperature of the cooling tower.
Step S104, obtaining the total water demand data of the cooling water of the host in the central air conditioning system.
In general, the total cooling water volume of a plurality of cooling towers in a central air conditioning system is related to the cooling capacity requirement of a host machine. Because the water distribution amount of each cooling tower has a limit water amount interval, in step S104, the total water amount requirement data of the cooling water of the host is obtained, so as to determine how many cooling towers should be opened to match the refrigeration requirement of the host.
And S106, calculating cooling tower starting number data according to the cooling water total water demand data, and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data.
And (3) according to the total water demand data of the main machine cooling water obtained in the step S104, the total cooling water demand of the cooling towers can be converted, and the number of the cooling towers which are started can be calculated by dividing the total cooling water quantity by the minimum uniform water distribution quantity of each cooling tower. And the total controller is arranged to receive the cooling tower start number instruction and then control to increase or decrease the start number of the cooling tower, so that the traditional manual setting method is replaced by a system automatic control mode to match the heat exchange capacity of the cooling tower, and the effect of lowest system energy consumption is achieved.
And S108, calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and controlling and adjusting a cooling tower fan rotating speed output value according to the optimal cooling water supply temperature value.
And S108, determining the wet bulb temperature of the cooling towers according to the detected environmental temperature and humidity data of each cooling tower, writing a conversion formula of the wet bulb temperature and the optimal cooling water supply temperature into a controller operation program, and calculating the optimal cooling water supply temperature value of each cooling tower according to the relation between the water outlet temperature of the cooling towers and the heat exchange area so as to control the rotating speed of each cooling tower fan, thereby automatically optimizing the cooling water supply temperature and realizing the lowest total energy consumption of the system.
According to the cooling tower control method, the environmental temperature and humidity data of the space where each cooling tower is located in the central air conditioning system and the total water quantity demand data of the cooling water of the main machine in the central air conditioning system are obtained, the cooling tower opening number data is calculated according to the total water quantity demand data of the cooling water, the starting number of the cooling towers is controlled to be increased or decreased according to the cooling tower opening number data, the optimal cooling water supply temperature value is calculated according to the environmental temperature and humidity data, and the cooling tower fan rotating speed output value is controlled and adjusted according to the optimal cooling water supply temperature value. The cooling tower control method and the control system can intelligently and efficiently control the operation of the cooling tower, fully utilize the heat exchange capacity and the heat exchange area of the cooling tower by using the optimal control strategy, and realize the lowest total energy consumption of the system.
Fig. 2 schematically illustrates a flow chart of a cooling tower control method 200 in a second embodiment of the present disclosure.
Referring to fig. 2, the second embodiment cooling tower control method 200 in fig. 2 differs from the first embodiment cooling tower control method 100 in fig. 1 in that step S210 is added: and acquiring water inlet temperature data and water outlet temperature data of the cooling tower, calculating a water inlet temperature adjustment value of a host according to the water inlet temperature data and the water outlet temperature data, and adjusting and controlling the opening of a bypass valve connected between a water inlet end and a water outlet end of the cooling tower through the water inlet temperature adjustment value of the host.
The bypass valve is arranged between the water inlet end and the water outlet end of the cooling tower and is used for controlling the cooling water temperature flowing into the host machine, and the water temperature flowing into the host machine cannot be lower than the lowest bearable value of the host machine. Therefore, if the outlet water temperature sensor detects that the cooling water temperature entering the host machine is too low, the opening degree of the bypass valve needs to be increased, and part of the cooling water is directly circulated back to the host machine without radiating heat through the cooling tower. Therefore, step S210 can obtain the water inlet temperature data and the water outlet temperature data of the cooling tower, calculate the water inlet temperature adjustment value of the host according to the water inlet temperature data and the water outlet temperature data, and adjust and control the opening of the bypass valve connected between the water inlet end and the water outlet end of the cooling tower through the water inlet temperature adjustment value of the host, thereby ensuring that the bypass valve can be automatically opened under the conditions of cool weather and low water supply temperature of the cooling water, improving the water inlet temperature of the host, and avoiding the shutdown condition of the host.
Fig. 3 schematically shows a flowchart of a cooling tower control method according to a third embodiment of the present disclosure.
Referring to fig. 3, the cooling tower control method 300 of the third embodiment in fig. 3 differs from the cooling tower control method 200 of the second embodiment in fig. 2 in that step S312 is added: and acquiring icing detection data of an air inlet window of the cooling tower, and judging whether a reverse deicing mode of the cooling tower fan needs to be started or not according to the icing detection data.
In winter, the phenomenon that the air inlet window of the cooling tower is frozen often occurs, which can seriously affect the operation of the cooling tower. Step S312 is to set an electronic icing detector on the air inlet window of the cooling tower, if the air inlet window of the cooling tower is iced, the reversing deicing mode of starting the fan of the cooling tower can be automatically controlled, deicing is carried out by reversing the fan for a certain time until the mode of forward running of the fan is automatically restored after the icing condition is detected to be eliminated.
Fig. 4 schematically shows a flow chart of a cooling tower control method 400 according to a fourth embodiment of the present disclosure.
Referring to fig. 4, the cooling tower control method 400 of the fourth embodiment in fig. 4 differs from the cooling tower control method 300 of the third embodiment in fig. 3 in that step S414 is added: and acquiring fault data of the cooling tower and the cooling tower fan and automatically sending out an alarm prompt according to the fault data.
When the cooling tower fails, for example, the cooling tower has overlarge circulating water quantity, insufficient ventilation quantity of the cooling tower, overhigh water inlet temperature of the cooling tower, short circuit of air suction and exhaust of the cooling tower, overhigh outdoor wet bulb temperature of the cooling tower, or the cooling tower fan has the faults of reduced fan rotating speed, damaged fan blades and the like, the step S414 can automatically detect the faults of the fan and the cooling tower, automatically acquire fault data of the cooling tower and the cooling tower fan and send an alarm prompt to the operation total station.
Fig. 5 schematically illustrates a schematic diagram of a cooling tower control system 500 implementing control in a central air conditioning system/industrial circulating water system in an exemplary embodiment of the present disclosure.
Referring to fig. 5, the cooling tower control system 500 of the present disclosure may achieve the lowest total energy consumption of the system by fully utilizing the heat exchange capacity and heat exchange area of the cooling towers with an optimal control strategy by achieving intelligent control of a plurality of cooling towers (cooling tower #1, cooling tower #2, cooling tower #3 … … cooling tower #n) in a central air conditioning system/industrial circulating water system.
Fig. 6 schematically illustrates a schematic diagram of a cooling tower control system 600 in one embodiment of the present disclosure.
Referring to fig. 6, a cooling tower control system 600 includes:
the environment temperature and humidity data acquisition module 10 is used for acquiring environment temperature and humidity data of the space where each cooling tower is located in the central air conditioning system;
the cooling water total water demand data acquisition module 20 is used for acquiring cooling water total water demand data of a host in the central air conditioning system;
a cooling tower number control module 30, configured to calculate cooling tower start-up number data according to the cooling water total water demand data, and control to increase or decrease the start-up number of the cooling tower according to the cooling tower start-up number data;
the fan rotation speed control module 40 is configured to calculate an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and control and adjust a cooling tower fan rotation speed output value according to the optimal cooling water supply temperature value.
The environmental temperature and humidity data acquisition module 10 is generally configured as a temperature and humidity sensor and is disposed in an outdoor space of a cooling tower, such as a roof of a house. The environmental temperature and humidity data acquisition module 10 is used for acquiring environmental temperature and humidity data of the space where the cooling tower is located and calculating the wet bulb temperature of the cooling tower. The cooling tower wet bulb temperature is used to determine the cooling tower optimal cooling temperature. The cooling water total water demand data acquisition module 20, the cooling tower number control module 30 and the fan rotation speed control module 40 are arranged in an integrated controller with a chip (writing control program), and the cooling water total water demand data acquisition module 20 is used for acquiring cooling water total water demand data of a host machine, so as to determine how many cooling towers should be arranged to match the refrigeration demand of the host machine. The cooling tower number control module 30 can convert the total cooling water demand of the cooling towers according to the obtained total water demand data of the main machine cooling water, and can calculate the number of the opened cooling towers by dividing the total cooling water quantity by the minimum uniform water distribution quantity of each cooling tower. And the total controller receives the cooling tower start number instruction and then controls the start number of the cooling tower to be increased or decreased, so that the traditional manual setting method is replaced by a system automatic control mode to match the heat exchange capacity of the cooling tower, and the effect of lowest system energy consumption is achieved. The fan rotating speed control module 40 determines the wet bulb temperature of the cooling towers according to the environmental temperature and humidity data of each cooling tower detected by the environmental temperature and humidity data acquisition module 10, and writes a conversion formula of the wet bulb temperature and the optimal cooling water supply temperature into a controller operation program, and calculates the optimal cooling water supply temperature value of each cooling tower according to the relation between the water outlet temperature of the cooling towers and the heat exchange area so as to control the rotating speed of each cooling tower fan, thereby automatically optimizing the cooling water supply temperature and realizing the lowest total energy consumption of the system.
The cooling tower control system 600 in the disclosed embodiment obtains the environmental temperature and humidity data of the space where each cooling tower is located in the central air conditioning system by setting the environmental temperature and humidity data acquisition module 10, the cooling water total water demand data acquisition module 20 acquires the cooling water total water demand data of the host computer in the central air conditioning system, the cooling tower number control module 30 is used for calculating cooling tower opening number data according to the cooling water total water demand data, the number of starting cooling towers is controlled to be increased or decreased according to the cooling tower opening number data, the fan rotating speed control module 40 is used for calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and the fan rotating speed output value of the cooling tower is controlled and adjusted according to the optimal cooling water supply temperature value. The cooling tower control system can intelligently and efficiently control the operation of the cooling tower, fully utilize the heat exchange capacity and the heat exchange area of the cooling tower by using the optimal control strategy, and realize the lowest total energy consumption of the system.
Fig. 7 schematically illustrates a schematic diagram of a cooling tower control system 700 in another embodiment of the present disclosure.
Referring to fig. 7, the cooling tower control system 700 in fig. 7 differs from the cooling tower control system 600 in fig. 6 in that: the cooling tower control system 700 also includes (fig. 7 only embodies additional modules compared to fig. 6):
and the icing detection module 50 is used for acquiring icing detection data of the air inlet window of the cooling tower.
And the deicing control module 60 is configured to determine whether a reverse deicing mode of the cooling tower fan needs to be started according to the icing detection data.
And the fault detection module 70 is used for acquiring fault data of the cooling tower and the cooling tower fan.
And the alarm module 80 is used for automatically sending out an alarm prompt according to the fault data.
The ice detection module 50 and the ice removal control module 60 are used for automatic ice removal purposes. The fault detection module 70 and the alarm module 80 are used for realizing the functions of automatically detecting faults of the fan and the cooling tower and realizing the function of automatically alarming.
Since each function of the cooling tower control system is described in detail in the corresponding method embodiments, the disclosure is not repeated herein.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
In an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided.
Those skilled in the art will appreciate that the various aspects of the application may be implemented as a system, method, or program product. Accordingly, aspects of the application may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 800 according to such an embodiment of the application is described below with reference to fig. 8. The electronic device 800 shown in fig. 8 is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present application.
As shown in fig. 8, the electronic device 800 is embodied in the form of a general purpose computing device. Components of electronic device 800 may include, but are not limited to: a memory 820, and a processor 810 coupled to the memory 820, the processor 810 configured to perform the cooling tower control method 100 described above based on instructions stored in the memory 820. Data transfer between the memory 820 and the processor 810 occurs via bus 830.
Wherein the memory 820 stores program code that can be executed by the processor 810 such that the processor 810 performs steps according to various exemplary embodiments of the present application described in the above section of the "exemplary method" of the present specification. For example, the processor 810 may perform step S102 as shown in fig. 1: acquiring environmental temperature and humidity data of a space where each cooling tower is located in a central air conditioning system; step S104: acquiring total water quantity demand data of cooling water of a host in a central air conditioning system; step S106: calculating cooling tower starting number data according to the cooling water total water demand data, and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data; step S108: and calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and controlling and adjusting a cooling tower fan rotating speed output value according to the optimal cooling water supply temperature value.
The memory 820 may include readable media in the form of volatile memory units, such as Random Access Memory (RAM) 8201 and/or cache memory unit 8202, and may further include read only memory unit (ROM) 8203.
Memory 820 may also include a program/utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 830 may be one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 800 may also communicate with one or more external devices 900 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 800, and/or any device (e.g., router, modem, etc.) that enables the electronic device 800 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 850. Also, electronic device 800 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 860. As shown, network adapter 860 communicates with other modules of electronic device 800 over bus 830. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 800, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible embodiments, the various aspects of the application may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the application as described in the "exemplary methods" section of this specification, when said program product is run on the terminal device.
The program product for implementing the above-described method according to an embodiment of the present application may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may be run on a terminal device such as a personal computer. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
Furthermore, the above-described drawings are only schematic illustrations of processes included in the method according to the exemplary embodiment of the present application, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
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 application is intended to cover any adaptations, 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.
Claims (9)
1. A cooling tower control method, characterized by comprising:
acquiring environmental temperature and humidity data of a space where each cooling tower is located in a central air conditioning system;
acquiring total water quantity demand data of cooling water of a host in a central air conditioning system;
calculating cooling tower starting number data according to the cooling water total water demand data, and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data;
calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, and controlling and adjusting a cooling tower fan rotating speed output value according to the optimal cooling water supply temperature value;
the method for calculating the optimal cooling water supply temperature value according to the environmental temperature and humidity data, controlling and adjusting the output value of the fan speed of the cooling tower according to the optimal cooling water supply temperature value comprises the following steps: determining the wet bulb temperature according to the environmental temperature and humidity data; and calculating the optimal cooling water supply temperature value of each cooling tower and controlling the rotating speed of a fan of each cooling tower according to a conversion formula of the wet bulb temperature and the optimal cooling water supply temperature and the relation between the water outlet temperature of the cooling tower and the heat exchange area.
2. The cooling tower control method according to claim 1, characterized by further comprising: and acquiring water inlet temperature data and water outlet temperature data of the cooling tower, calculating a water inlet temperature adjustment value of a host according to the water inlet temperature data and the water outlet temperature data, and adjusting and controlling the opening of a bypass valve connected between a water inlet end and a water outlet end of the cooling tower through the water inlet temperature adjustment value of the host.
3. The cooling tower control method according to claim 1, characterized by further comprising: and acquiring icing detection data of an air inlet window of the cooling tower, and judging whether a reverse deicing mode of the cooling tower fan needs to be started or not according to the icing detection data.
4. The cooling tower control method according to claim 1, characterized by further comprising: and acquiring fault data of the cooling tower and the cooling tower fan and automatically sending out an alarm prompt according to the fault data.
5. A cooling tower control system, comprising:
the environment temperature and humidity data acquisition module is used for acquiring environment temperature and humidity data of the space where each cooling tower is located in the central air conditioning system;
the cooling water total water demand data acquisition module is used for acquiring cooling water total water demand data of a host in the central air conditioning system;
the cooling tower number control module is used for calculating cooling tower starting number data according to the cooling water total water demand data and controlling to increase or decrease the starting number of the cooling tower according to the cooling tower starting number data;
the fan speed control module is used for calculating an optimal cooling water supply temperature value according to the environmental temperature and humidity data, controlling and adjusting a cooling tower fan speed output value according to the optimal cooling water supply temperature value, wherein the calculating of the optimal cooling water supply temperature value according to the environmental temperature and humidity data, controlling and adjusting the cooling tower fan speed output value according to the optimal cooling water supply temperature value comprises the following steps: determining the wet bulb temperature according to the environmental temperature and humidity data; and calculating the optimal cooling water supply temperature value of each cooling tower and controlling the rotating speed of a fan of each cooling tower according to a conversion formula of the wet bulb temperature and the optimal cooling water supply temperature and the relation between the water outlet temperature of the cooling tower and the heat exchange area.
6. The cooling tower control system of claim 5, further comprising:
the icing detection module is used for acquiring icing detection data of an air inlet window of the cooling tower;
and the deicing control module is used for judging whether a reverse deicing mode of the cooling tower fan needs to be started according to the icing detection data.
7. The cooling tower control device according to claim 5, further comprising:
the fault detection module is used for acquiring fault data of the cooling tower and the cooling tower fan;
and the alarm module is used for automatically sending out alarm prompts according to the fault data.
8. An electronic device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to execute the cooling tower control method of any of claims 1-4 based on instructions stored in the memory.
9. A computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the cooling tower control method according to any one of claims 1 to 4.
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| CN202011397613.5A CN114608182B (en) | 2020-12-03 | 2020-12-03 | Cooling tower control method and control system |
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| CN202011397613.5A CN114608182B (en) | 2020-12-03 | 2020-12-03 | Cooling tower control method and control system |
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| CN114608182B true CN114608182B (en) | 2023-09-15 |
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| CN114608182A (en) | 2022-06-10 |
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