CN112461036B - Cooling tower fan control method and device, terminal equipment and storage medium - Google Patents
Cooling tower fan control method and device, terminal equipment and storage medium Download PDFInfo
- Publication number
- CN112461036B CN112461036B CN202011237635.5A CN202011237635A CN112461036B CN 112461036 B CN112461036 B CN 112461036B CN 202011237635 A CN202011237635 A CN 202011237635A CN 112461036 B CN112461036 B CN 112461036B
- Authority
- CN
- China
- Prior art keywords
- fan
- cooling tower
- frequency
- air
- efficiency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention is suitable for the field of energy conservation, and provides a cooling tower fan control method, a cooling tower fan control device, terminal equipment and a storage medium, wherein the method comprises the steps of obtaining temperature parameters corresponding to a frequency converter of a fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply; calculating the efficiency of the cooling tower according to the temperature parameter; acquiring the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum; obtaining the optimal air-water ratio of the cooling tower according to the air volume of the fan and the flow of the cooling water; and adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow. The invention well solves the problem that the relation between the fan power and the fan air volume is not reasonably utilized in the prior art to fully reduce the fan power consumption and improve the efficiency of the cooling tower.
Description
Technical Field
The invention belongs to the field of energy conservation, and particularly relates to a cooling tower fan control method and device, terminal equipment and a storage medium.
Background
The cooling tower is an important component of a heating ventilation air-conditioning system and has the function of exchanging heat between circulating water carrying waste heat and air in the tower, transmitting the heat of the water to the air and dissipating the heat into the atmosphere to cool the circulating water. The cooling tower has good operation performance and directly influences the cooling and heating effects of the air conditioning system. The energy consumption of the cooling tower is an important component of the energy consumption of a circulating cooling water system, the efficiency of the cooling tower is improved by using a control method of the cooling tower, and further a water chilling unit works in a high-efficiency area, so that the cooling tower and the whole air conditioning system are effectively improved, and the cooling tower has important social significance and economic value. The prior art relies on opening and stopping the control cooling tower and improves cooling tower efficiency more, though can reduce the amount of wind through the cooling tower through opening and stopping the control cooling tower, nevertheless can not the relation of rational utilization fan power and fan amount of wind fully reduce fan consumption and improve cooling tower efficiency.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for controlling a cooling tower blower, a terminal device, and a storage medium, wherein an optimal frequency is obtained by using a cubic relation between a blower power and a blower air volume, so as to solve the problem in the prior art that the relationship between the blower power and the blower air volume is not reasonably used to fully reduce the blower power consumption and improve the cooling tower efficiency.
In a first aspect of the embodiments of the present invention, a method for controlling a cooling tower fan is provided, including: acquiring temperature parameters corresponding to a frequency converter of a fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply; calculating the efficiency of the cooling tower according to the temperature parameter; acquiring the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum; obtaining the optimal air-water ratio of the cooling tower according to the air volume of the fan and the flow of the cooling water; and adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow. The temperature parameters corresponding to the frequency converters of the fans under different frequencies are obtained, and the method specifically comprises the following steps:
and acquiring the outlet temperature of cooling water, the inlet temperature of cooling tower and the wet bulb temperature of air entering the cooling tower corresponding to the frequency converter of the fan under different frequencies.
In some embodiments, calculating the efficiency of the cooling tower from the temperature parameter specifically comprises:
calculating the efficiency eta of the cooling tower according to the outlet temperature of cooling water, the inlet temperature of the cooling tower and the wet bulb temperature of air entering the cooling tower under different fan frequencies;
the calculation formula of the eta is as follows:
wherein, toutFor the cooling water outlet temperature, tinIs the inlet water temperature of the cooling tower, twbIs the wet bulb temperature of the air entering the cooling tower.
In some embodiments, obtaining the fan air volume and the cooling water flow corresponding to the maximum efficiency of the cooling tower specifically includes:
measuring the cooling water flow when the efficiency of the cooling tower is maximum;
and calculating the corresponding fan air quantity when the efficiency of the cooling tower is maximum according to the cubic relation between the fan air quantity and the frequency and the corresponding fan frequency when the efficiency of the cooling tower is maximum.
In some embodiments, before adjusting the frequency converter frequency of the fan in the cooling tower to the frequency corresponding to the air volume required to achieve the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow, the method further includes:
and acquiring real-time cooling water flow collected by the cooling tower.
In some embodiments, based on the optimal air-water ratio and the real-time cooling water flow, adjusting the frequency of the frequency converter of the fan in the cooling tower to a frequency corresponding to the air volume required to achieve the optimal air-water ratio specifically includes:
obtaining the air quantity required by realizing the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow;
obtaining the frequency corresponding to the air quantity required by realizing the optimal air-water ratio according to the cubic relation between the air quantity and the frequency of the fan and the air quantity required by realizing the optimal air-water ratio;
and adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio.
In some embodiments, the third power relationship between fan air volume and frequency is formulated as:
wherein f is the fan frequency, 50 is the power frequency, QaIs the air quantity of the fan QrThe rated air quantity of the cooling tower.
In a second aspect of the embodiments of the present invention, there is provided a cooling tower fan control device, including: the temperature parameter acquisition module is configured to acquire temperature parameters corresponding to a frequency converter of the fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply; a cooling tower efficiency calculation module configured to calculate an efficiency of a cooling tower from the temperature parameter; the flow data acquisition module is configured to acquire the fan air volume and the cooling water flow corresponding to the maximum efficiency of the cooling tower; the optimal air-water ratio acquisition module is configured to obtain the optimal air-water ratio of the cooling tower according to the fan air volume and the cooling water flow; and the frequency converter frequency adjusting module is configured to adjust the frequency of the frequency converter of the fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow.
In a third aspect of the embodiments of the present invention, there is provided an apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the cooling tower fan control method when executing the computer program.
In a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided, which stores a computer program, and the computer program, when executed by a processor, implements the steps of the cooling tower fan control method.
The cooling tower fan control method provided by the embodiment of the invention has the beneficial effects that at least: the method comprises the steps of firstly, acquiring corresponding temperature parameters of a frequency converter of the fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply; secondly, calculating the efficiency of the cooling tower according to the temperature parameters; obtaining the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum again; then obtaining the optimal air-water ratio of the cooling tower according to the air volume of the fan and the flow of the cooling water; and finally, adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow. The frequency of the frequency converter of the fan in the cooling tower is adjusted to realize the frequency corresponding to the air quantity required by the optimal air-water ratio, so that the efficiency of the cooling tower can be improved, the water chilling unit works in a high-efficiency area, and the effect of improving the efficiency of the whole cooling tower and the whole air conditioning system is achieved, and the effects of fully reducing the power consumption of the fan, improving the efficiency of the cooling tower and saving energy by reasonably utilizing the relationship between the power of the fan and the air quantity of the fan can be achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a cooling tower fan control method according to an embodiment of the present invention;
FIG. 2 is a flow chart of obtaining the fan air volume and the cooling water flow rate corresponding to the maximum efficiency of the cooling tower according to the embodiment of the present invention;
fig. 3 is a flowchart for adjusting the frequency of the frequency converter of the fan in the cooling tower to a frequency corresponding to the air volume required to achieve the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow according to the embodiment of the present invention;
fig. 4 is a schematic flow chart of an implementation of a cooling tower fan control device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail. All other embodiments, which can be derived by a person skilled in the art from the description of the embodiments of the invention given above, are within the scope of protection of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
First embodiment
FIG. 1 is a flow chart of a cooling tower fan control method provided in one embodiment of the present invention.
As shown in fig. 1, the method for controlling a cooling tower fan includes steps S110 to S150:
s110: and acquiring temperature parameters corresponding to the frequency converter of the fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply.
In this embodiment, the fan is used for a cooling tower, and is a machine for raising the pressure of gas and discharging the gas by means of input mechanical energy, and is a driven fluid machine. The cooling tower is a device which uses water as circulating coolant, absorbs heat from a system and discharges the heat to the atmosphere so as to reduce the water temperature; the evaporative heat dissipation device is used for dissipating waste heat generated in industry or in a refrigeration air conditioner to reduce water temperature by utilizing the principles of evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like to generate steam by carrying out cold and heat exchange after water flows and air flows, and the steam volatilizes and takes away heat, so that the normal operation of the system is ensured. The power frequency is the rated frequency adopted by power generation, transmission, transformation and distribution equipment of a power system and industrial and civil electrical equipment, and is HZ. The power grid frequency for supplying power in China is 50Hz, namely the power frequency is 50Hz, so the frequency range of the frequency converter is less than or equal to the power grid frequency for supplying power.
In this embodiment, the temperature parameters corresponding to different frequencies include toutIs the outlet temperature t of the cooling waterinFor the water inlet temperature and t of the cooling towerwbIs the wet bulb temperature of the air entering the cooling tower. The outlet temperature of the cooling water and the inlet temperature of the cooling tower are measured by temperature sensors arranged on the inlet and outlet water pipes of the cooling tower, and the wet bulb temperature of the air of the cooling tower can also be measured by the temperature sensors.
S120: and calculating the efficiency of the cooling tower according to the temperature parameter.
In this embodiment, the efficiency of the cooling tower is the heat exchange efficiency of a single cooling tower, and the energy consumption of the cooling tower is an important component of the energy consumption of the circulating cooling water system; the heat exchange efficiency of the cooling tower is improved, the water chilling unit can work in a high-efficiency area, and the effect of improving the efficiency of the whole cooling tower and the whole air conditioning system is achieved, so that the energy-saving effect is achieved. The power consumption of the frequency converter is not considered, and the power of the fan is in direct proportion to the third power of the air quantity of the fan. When the factors of the construction, arrangement and the like of the cooling tower are not changed, the efficiency of the cooling tower is only related to the wind-water ratio, so that the efficiency of the cooling tower is only a function of the fan frequency. The efficiency of the cooling tower can be improved by adjusting the frequency of the fan, so that the purposes of fully reducing the power consumption of the fan and improving the efficiency of the cooling tower by reasonably utilizing the relationship between the power of the fan and the air quantity of the fan can be achieved.
In this embodiment, the heat exchange efficiency of a single cooling tower is equal to the ratio of the actual supply and return water temperature difference of the cooling water to the maximum possible supply and return water temperature difference, and the cooling tower efficiency η can be calculated according to the outlet temperature of the cooling water, the inlet temperature of the cooling tower and the wet bulb temperature of the air entering the cooling tower under different fan frequencies. The calculation formula of the cooling tower efficiency eta is as follows:
wherein, toutFor the cooling water outlet temperature, tinIs the inlet water temperature of the cooling tower, twbIs the wet bulb temperature of the air entering the cooling tower.
S130: and acquiring the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum.
In this embodiment, the wind-water ratio of the frequency converter with the frequency of 50Hz is calculated according to the rated air quantity of the cooling tower and the actual cooling water flow. And the air-water ratios under other frequencies are calculated according to the actual air quantity of the fan and the actual cooling water flow. The cooling water flow data can be acquired by a flow sensor, and the fan air volume can be calculated according to the cubic relation between the fan air volume and the frequency and the corresponding fan frequency when the efficiency of the cooling tower is maximum.
S140: and obtaining the optimal air-water ratio of the cooling tower according to the air quantity of the fan and the flow of the cooling water.
S150: and adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow.
In the embodiment, the power consumption of the frequency converter is not considered, and the power of the fan is in direct proportion to the third power of the air quantity of the fan. When the factors of the construction, arrangement and the like of the cooling tower are not changed, the efficiency of the cooling tower is only related to the wind-water ratio, so that the efficiency of the cooling tower is only a function of the fan frequency. The frequency of a frequency converter of a fan in the cooling tower is adjusted to realize the frequency corresponding to the air quantity required by the optimal air-water ratio, so that the efficiency of the cooling tower can be improved, and the aims of fully reducing the power consumption of the fan and improving the efficiency of the cooling tower by reasonably utilizing the relation between the power of the fan and the air quantity of the fan can be fulfilled.
In this embodiment, first, by obtaining temperature parameters corresponding to a frequency converter of a fan at different frequencies, a frequency range of the frequency converter is less than or equal to a power grid frequency of power supply; secondly, calculating the efficiency of the cooling tower according to the temperature parameters; obtaining the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum again; then obtaining the optimal air-water ratio of the cooling tower according to the air volume of the fan and the flow of the cooling water; and finally, based on the optimal air-water ratio and the real-time cooling water flow, adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio, so that the aims of fully reducing the power consumption of the fan and improving the efficiency of the cooling tower by reasonably utilizing the relationship between the power of the fan and the air quantity of the fan can be fulfilled.
Fig. 2 is a flow chart of obtaining a fan air volume and a cooling water flow rate corresponding to the maximum efficiency of the cooling tower according to an embodiment of the present invention.
As shown in fig. 2, the obtaining of the fan air volume and the cooling water flow corresponding to the maximum efficiency of the cooling tower includes steps S210 to S220:
s210: the cooling water flow at which the efficiency of the cooling tower is maximum is measured.
In this embodiment, the cooling water flow data when the efficiency of the cooling tower is the maximum can be collected by the flow sensor.
S220: and calculating the corresponding fan air quantity when the efficiency of the cooling tower is maximum according to the cubic relation between the fan air quantity and the frequency and the corresponding fan frequency when the efficiency of the cooling tower is maximum.
In this embodiment, the relationship of the fan air volume to the frequency in the third power is expressed by the following formula:
wherein f is the fan frequency, 50 is the power frequency, QaIs the air quantity of the fan QrThe rated air quantity of the cooling tower.
Fig. 3 is a flowchart of adjusting the frequency of the frequency converter of the fan in the cooling tower to a frequency corresponding to the air volume required to achieve the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow rate according to an embodiment of the present invention.
As shown in fig. 3, based on the optimal air-water ratio and the real-time cooling water flow, adjusting the frequency of the frequency converter of the fan in the cooling tower to a frequency corresponding to the air volume required to achieve the optimal air-water ratio, including steps S310 to S330:
s310: and obtaining the air quantity required by realizing the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow.
In this embodiment, the real-time cooling water flow data may be collected by a flow sensor.
S320: and obtaining the frequency corresponding to the air quantity required by realizing the optimal air-water ratio according to the cubic relation between the air quantity and the frequency of the fan and the air quantity required by realizing the optimal air-water ratio.
In the embodiment, the air volume of the fan under each frequency is calculated according to the cubic relation between the air volume of the fan and the frequency;
the cubic relation between the air quantity and the frequency of the fan is expressed by a formula as follows:
wherein f is the fan frequency, 50 is the power frequency, QaIs the air quantity of the fan QrThe rated air quantity of the cooling tower.
S330: and adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio.
In this embodiment, the frequency of the frequency converter of the fan in the cooling tower is adjusted to the frequency corresponding to the air volume required to realize the optimal air-water ratio, so that the efficiency of the cooling tower can be improved, the water chilling unit can work in a high-efficiency area, the efficiency of the whole cooling tower and the whole air conditioning system can be improved, and the energy-saving effect can be achieved.
The method comprises the steps that firstly, corresponding temperature parameters of a frequency converter of a fan under different frequencies are obtained, and the frequency range of the frequency converter is smaller than or equal to the power grid frequency of power supply; secondly, calculating the efficiency of the cooling tower according to the temperature parameters; obtaining the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum again; then obtaining the optimal air-water ratio of the cooling tower according to the air volume of the fan and the flow of the cooling water; and finally, adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow. The frequency of the frequency converter of the fan in the cooling tower is adjusted to realize the frequency corresponding to the air quantity required by the optimal air-water ratio, so that the efficiency of the cooling tower can be improved, the water chilling unit works in a high-efficiency area, the efficiency of the whole cooling tower and the whole air conditioning system is improved, and the effects of fully reducing the power consumption of the fan, improving the efficiency of the cooling tower and saving energy by reasonably utilizing the relation between the power of the fan and the air quantity of the fan can be achieved.
Second embodiment
Based on the same inventive concept as the method in the first embodiment, correspondingly, the embodiment also provides a cooling tower fan control device.
Fig. 4 is a schematic flow chart of an implementation of the cooling tower fan control device provided by the invention.
As shown in fig. 4, the device includes 41 a temperature parameter obtaining module, 42 a cooling tower efficiency calculating module, 43 a flow data obtaining module, 44 an optimal air-water ratio obtaining module and 45 a frequency converter frequency adjusting module.
The temperature parameter acquisition module 41 is configured to acquire temperature parameters corresponding to frequency converters of the fans under different frequencies, and the frequency range of the frequency converters is less than or equal to the power grid frequency of power supply;
a cooling tower efficiency calculation module 42 configured to calculate an efficiency of the cooling tower from the temperature parameter;
a 43 flow data acquisition module configured to acquire a fan air volume and a cooling water flow corresponding to the maximum efficiency of the cooling tower;
the 44 optimal wind-water ratio obtaining module is configured to obtain an optimal wind-water ratio of the cooling tower according to the fan air volume and the cooling water flow;
and the 45 frequency converter frequency adjusting module is configured to adjust the frequency converter frequency of a fan in the cooling tower to a frequency corresponding to the air quantity required by realizing the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow.
In some exemplary embodiments, the traffic data obtaining module specifically includes:
a cooling water flow measuring unit configured to measure a cooling water flow at which an efficiency of the cooling tower is maximized;
and the fan air volume calculating unit is configured to calculate the fan air volume corresponding to the maximum efficiency of the cooling tower according to the cubic relation between the fan air volume and the frequency and the fan frequency corresponding to the maximum efficiency of the cooling tower.
In some exemplary embodiments, the frequency converter frequency adjustment module specifically includes:
the optimal air volume obtaining unit is configured to obtain the air volume required by realizing the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow;
the optimal frequency obtaining unit is configured to obtain a frequency corresponding to the air quantity required by realizing the optimal air-water ratio according to the cubic relation between the air quantity of the fan and the frequency and the air quantity required by realizing the optimal air-water ratio;
and the frequency converter frequency adjusting unit is configured to adjust the frequency converter frequency of a fan in the cooling tower to a frequency corresponding to the air quantity required for realizing the optimal air-water ratio.
In some exemplary embodiments, the apparatus further comprises:
and the real-time cooling water flow acquisition module is configured to acquire the real-time cooling water flow acquired by the cooling tower.
Third embodiment
The method and the device can be applied to terminal equipment such as desktop computers, notebooks, palm computers and cloud servers.
Fig. 5 is a schematic diagram of an apparatus to which the above method and apparatus may be applied according to an embodiment of the present invention, and as shown in the drawing, the apparatus 5 includes a memory 51, a processor 50, and a computer program 52 stored in the memory 51 and executable on the processor 50, and when the processor 50 executes the computer program 52, the steps of the cooling tower fan control method are implemented. Such as the functions of the modules 41 to 45 shown in fig. 4.
The device 5 may be a computing device such as a cloud server. The terminal device may include, but is not limited to, the processor 50 and the memory 51. Those skilled in the art will appreciate that fig. 5 is merely an example of a device 5 and does not constitute a limitation of the terminal device 5 and may include more or fewer components than shown, or some components in combination, or different components, for example the terminal device may also include input output devices, network access devices, buses, etc.
The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 51 may be an internal storage unit of the device 5, such as a hard disk or a memory of the device 5. The memory 51 may also be an external storage device of the device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the device 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the device 5. The memory 51 is used for storing the computer program and other programs and data required by the terminal device. The memory 51 may also be used to temporarily store data that has been output or is to be output.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
Specifically, the present application further provides a computer-readable storage medium, which may be a computer-readable storage medium contained in the memory in the foregoing embodiments; or it may be a separate computer-readable storage medium not incorporated into the terminal device. The computer readable storage medium stores one or more computer programs:
a computer-readable storage medium comprising a computer program stored thereon which, when executed by a processor, performs the steps of the cooling tower fan control method.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only used for distinguishing one functional unit from another, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (7)
1. A cooling tower fan control method is characterized by comprising the following steps:
acquiring temperature parameters corresponding to a frequency converter of a fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply;
calculating the efficiency of the cooling tower according to the temperature parameter;
acquiring the corresponding fan air volume and cooling water flow when the efficiency of the cooling tower is maximum;
obtaining the optimal air-water ratio of the cooling tower according to the air volume of the fan and the flow of the cooling water;
based on the optimal air-water ratio and the real-time cooling water flow, adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio;
obtain the fan amount of wind and the cooling water flow that correspond when the efficiency of cooling tower is the biggest, specifically include:
measuring the cooling water flow when the efficiency of the cooling tower is maximum;
calculating the corresponding fan air quantity when the efficiency of the cooling tower is maximum according to the cubic relation between the fan air quantity and the frequency and the corresponding fan frequency when the efficiency of the cooling tower is maximum;
based on the optimal air-water ratio and the real-time cooling water flow, adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio, and specifically comprising the following steps:
obtaining the air quantity required by realizing the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow;
obtaining a frequency corresponding to the air quantity required for realizing the optimal air-water ratio according to the cubic relation between the air quantity of the fan and the frequency and the air quantity required for realizing the optimal air-water ratio;
adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio;
the cubic relation between the fan air volume and the frequency is expressed by a formula as follows:
wherein f is the fan frequency, 50 is the power frequency, QaIs the air quantity of the fan QrThe rated air quantity of the cooling tower.
2. The method according to claim 1, wherein obtaining the temperature parameters corresponding to the frequency converter of the fan at different frequencies specifically comprises:
and acquiring the outlet temperature of cooling water, the inlet temperature of cooling tower and the wet bulb temperature of air entering the cooling tower corresponding to the frequency converter of the fan under different frequencies.
3. The method of claim 2, wherein calculating the efficiency of the cooling tower from the temperature parameter specifically comprises:
calculating the efficiency eta of the cooling tower according to the outlet temperature of cooling water, the inlet temperature of the cooling tower and the wet bulb temperature of air entering the cooling tower under different fan frequencies;
the calculation formula of the eta is as follows:
wherein, toutFor the cooling water outlet temperature, tinIs the inlet water temperature of the cooling tower, twbIs the wet bulb temperature of the air entering the cooling tower.
4. The method of claim 1, wherein adjusting the frequency of the frequency converter of the fan in the cooling tower to a frequency corresponding to the air volume required to achieve the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow rate further comprises:
and acquiring real-time cooling water flow collected by the cooling tower.
5. A cooling tower fan control apparatus, the apparatus comprising:
the temperature parameter acquisition module is configured to acquire temperature parameters corresponding to a frequency converter of the fan under different frequencies, wherein the frequency range of the frequency converter is less than or equal to the power grid frequency of power supply;
a cooling tower efficiency calculation module configured to calculate an efficiency of a cooling tower from the temperature parameter;
the flow data acquisition module is configured to acquire the fan air volume and the cooling water flow corresponding to the maximum efficiency of the cooling tower; the method specifically comprises the following steps: measuring the cooling water flow when the efficiency of the cooling tower is maximum; calculating the corresponding fan air quantity when the efficiency of the cooling tower is maximum according to the cubic relation between the fan air quantity and the frequency and the corresponding fan frequency when the efficiency of the cooling tower is maximum;
the optimal air-water ratio acquisition module is configured to obtain the optimal air-water ratio of the cooling tower according to the fan air volume and the cooling water flow;
the frequency converter frequency adjusting module is configured to adjust the frequency converter frequency of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow; the method specifically comprises the following steps: obtaining the air quantity required by realizing the optimal air-water ratio based on the optimal air-water ratio and the real-time cooling water flow; obtaining the frequency corresponding to the air quantity required by realizing the optimal air-water ratio according to the cubic relation between the air quantity and the frequency of the fan and the air quantity required by realizing the optimal air-water ratio; adjusting the frequency of a frequency converter of a fan in the cooling tower to a frequency corresponding to the air quantity required by the optimal air-water ratio;
the cubic relation between the fan air volume and the frequency is expressed by a formula as follows:
wherein f is the fan frequency, 50 is the power frequency, QaIs the air quantity of the fan QrThe rated air quantity of the cooling tower.
6. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 4 when executing the computer program.
7. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011237635.5A CN112461036B (en) | 2020-11-09 | 2020-11-09 | Cooling tower fan control method and device, terminal equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011237635.5A CN112461036B (en) | 2020-11-09 | 2020-11-09 | Cooling tower fan control method and device, terminal equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112461036A CN112461036A (en) | 2021-03-09 |
| CN112461036B true CN112461036B (en) | 2022-05-31 |
Family
ID=74825229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011237635.5A Active CN112461036B (en) | 2020-11-09 | 2020-11-09 | Cooling tower fan control method and device, terminal equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112461036B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375476B (en) * | 2021-06-25 | 2023-03-21 | 新奥数能科技有限公司 | Power control method and device for cooling tower fan group and computer equipment |
| CN113465442A (en) * | 2021-06-29 | 2021-10-01 | 青岛海尔空调电子有限公司 | Method and system for determining energy consumption of cooling tower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885334A (en) * | 2017-02-07 | 2017-06-23 | 深圳达实智能股份有限公司 | Variable air volume control in air conditioner equipment and device |
| CN106931603A (en) * | 2017-03-27 | 2017-07-07 | 重庆市计量质量检测研究院 | Central air conditioning cooling water system energy efficiency monitoring system based on technology of Internet of things |
| CN109539439A (en) * | 2018-12-11 | 2019-03-29 | 珠海格力电器股份有限公司 | Blower control method, device, medium and the unit of evaporation cooling type cold water unit |
| CN109595747A (en) * | 2018-12-24 | 2019-04-09 | 珠海格力电器股份有限公司 | The energy simulation method, apparatus of air-conditioning system |
| CN110398034A (en) * | 2019-07-15 | 2019-11-01 | 广东美的暖通设备有限公司 | Cooling tower control method, system and the air-conditioning of air-conditioning |
| CN111191370A (en) * | 2019-12-31 | 2020-05-22 | 珠海格力电器股份有限公司 | Simulation method and system of cooling tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8229597B2 (en) * | 2011-09-27 | 2012-07-24 | Jpmorgan Chase Bank, N.A. | Heating, ventilation, and air conditioning management system and method |
-
2020
- 2020-11-09 CN CN202011237635.5A patent/CN112461036B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885334A (en) * | 2017-02-07 | 2017-06-23 | 深圳达实智能股份有限公司 | Variable air volume control in air conditioner equipment and device |
| CN106931603A (en) * | 2017-03-27 | 2017-07-07 | 重庆市计量质量检测研究院 | Central air conditioning cooling water system energy efficiency monitoring system based on technology of Internet of things |
| CN109539439A (en) * | 2018-12-11 | 2019-03-29 | 珠海格力电器股份有限公司 | Blower control method, device, medium and the unit of evaporation cooling type cold water unit |
| CN109595747A (en) * | 2018-12-24 | 2019-04-09 | 珠海格力电器股份有限公司 | The energy simulation method, apparatus of air-conditioning system |
| CN110398034A (en) * | 2019-07-15 | 2019-11-01 | 广东美的暖通设备有限公司 | Cooling tower control method, system and the air-conditioning of air-conditioning |
| CN111191370A (en) * | 2019-12-31 | 2020-05-22 | 珠海格力电器股份有限公司 | Simulation method and system of cooling tower |
Non-Patent Citations (1)
| Title |
|---|
| "基于实测的公共建筑空调系统节能改造及能耗分析";魏冉;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20200430;第20-24页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112461036A (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112461036B (en) | Cooling tower fan control method and device, terminal equipment and storage medium | |
| CN107314498A (en) | The efficiency on-line monitoring method and device of a kind of central air conditioner system | |
| CN110631212B (en) | Energy-saving control method for central air-conditioning cooling water system | |
| WO2019085391A1 (en) | Method and system for separate metering during heating operation of multi-split air conditioner | |
| CN111723533B (en) | Energy-saving calculation method for variable-frequency water pump of ground source heat pump system | |
| CN212320014U (en) | Cooling system | |
| CN111947278A (en) | Cooling system and control method thereof | |
| CN105371443A (en) | Control device for air-conditioning cooling water system and data processing method of main control module of control device | |
| CN113375476B (en) | Power control method and device for cooling tower fan group and computer equipment | |
| CN111625938B (en) | Optimal operation assessment method and device for underground water source heat pump | |
| Demetriou et al. | Energy Modeling of Air-Cooled Data Centers: Part I—The Optimization of Enclosed Aisle Configurations | |
| CN201875843U (en) | Digital and intelligent power-saving device for central air-conditioner | |
| CN203928297U (en) | For central air-conditioning wind system by time frequency conversion air feed system | |
| CN113468629B (en) | Energy consumption splitting method for refrigeration season of clean air conditioning system | |
| CN109600969A (en) | A kind of server cabinet cooling system | |
| CN105318500A (en) | Building energy resource control and subentry metering system | |
| CN112752491B (en) | Intelligent linkage control method for data center air conditioner and terminal equipment | |
| CN112268355B (en) | Air conditioner target temperature adjusting method and terminal equipment | |
| CN211177483U (en) | Frequency conversion energy-saving transformation system suitable for precision air conditioner of fixed-frequency compressor | |
| CN107121198A (en) | A kind of fan cooling control system gathered based on NRF905 non-contact temperatures | |
| CN113531827A (en) | Variable frequency air conditioner control method and device, electronic equipment and medium | |
| CN206478790U (en) | A kind of multi-gang air conditioner | |
| JP2002156147A (en) | Operation estimation device for variable control system | |
| CN112146507B (en) | Control method, device and equipment for dynamic air exhaust tube of cooling tower and storage medium | |
| CN114364231A (en) | Water cooling system and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |