Optimization method and device for outlet resistance calculation of indirect air cooling tower and electronic equipment

Abstract

The application provides an air outlet resistance calculation optimization method and device for an indirect air cooling tower and electronic equipment, and relates to the technical field of cooling tower testing. The method comprises the following steps: at a preset historical moment, the environmental wind speed of the area where the indirect air cooling tower is located is obtained, and the head-on wind speed of the air inlet of the indirect air cooling tower is calculated. Then, based on the ratio of the environmental wind speed and the head-on wind speed, the air outlet resistance calculation model previously constructed for the indirect air cooling tower is corrected. Further, the real-time environmental wind speed of the area where the indirect air cooling tower is located is obtained, and the real-time head-on wind speed of the air inlet of the indirect air cooling tower is calculated. The real-time environmental wind speed and the real-time head-on wind speed are input into the corrected air outlet resistance calculation model, and the air outlet resistance output by the corrected air outlet resistance calculation model is determined. The method of the application can output more accurate air outlet resistance through the corrected air outlet resistance calculation model.

Description

Technical Field

[0001] This application relates to the field of cooling tower testing technology, and in particular to a method, apparatus and electronic equipment for calculating and optimizing the outlet resistance of an indirect air-cooled tower. Background Technology

[0002] The core function of an indirect air-cooled tower is to meet the cooling needs of industrial systems through non-contact heat exchange between air and water. Since the resistance characteristics of an indirect air-cooled tower directly determine the actual airflow and heat dissipation within the tower, calculating the outlet resistance becomes crucial for ensuring the safe operation of the indirect air-cooled tower and optimizing its thermal performance.

[0003] Existing methods for calculating the outlet resistance of indirect air-cooled towers mostly employ one-dimensional simplified calculation methods. Based on idealized assumptions, namely the steady-state wind assumption under design conditions, the outlet resistance of indirect air-cooled towers is directly calculated using empirical or semi-empirical formulas.

[0004] However, existing technologies ignore the fluctuations in the outlet resistance of indirect air-cooled towers under actual operating conditions, resulting in inaccurate calculations of the outlet resistance. Summary of the Invention

[0005] This application provides a method, apparatus, and electronic device for calculating and optimizing the outlet resistance of an indirect air-cooled tower, in order to solve the technical problem that the calculation results of the outlet resistance of the indirect air-cooled tower in the prior art are not accurate enough.

[0006] In a first aspect, this application provides a method for optimizing the calculation of the outlet resistance of an indirect air-cooled tower, including:

[0007] At a preset historical time, the ambient wind speed in the area where the indirect air-cooled tower is located is obtained, and the oncoming wind speed at the air inlet of the indirect air-cooled tower is calculated; wherein, the oncoming wind speed represents the average flow velocity of air flowing through the air inlet of the indirect air-cooled tower.

[0008] Based on the ratio of the ambient wind speed and the oncoming wind speed, the pre-constructed outlet resistance calculation model for the indirect air-cooled tower is modified.

[0009] Obtain the real-time ambient wind speed in the area where the indirect air-cooled tower is located, and calculate the real-time oncoming wind speed at the air inlet of the indirect air-cooled tower.

[0010] The real-time ambient wind speed and the real-time oncoming wind speed are input into the modified outlet resistance calculation model to determine the outlet resistance output by the modified outlet resistance calculation model; wherein, the outlet resistance represents the pressure loss generated when air is discharged from the outlet of the indirect air-cooled tower.

[0011] In one possible design, the outlet resistance calculation model includes an outlet resistance coefficient calculation unit and an outlet resistance calculation unit.

[0012] Based on the ratio of the ambient wind speed and the oncoming wind speed, the pre-constructed outlet resistance calculation model for the indirect air-cooled tower is modified, including:

[0013] The target correction factor is calculated based on the ratio of the ambient wind speed to the oncoming wind speed.

[0014] Based on the ratio of the ambient wind speed and the oncoming wind speed and the target correction factor, the air outlet resistance coefficient calculation unit included in the air outlet resistance calculation model is corrected.

[0015] In one possible design, the outlet resistance coefficient calculation unit uses a preset polynomial function to calculate the resistance coefficient of the indirect air-cooled tower outlet.

[0016] Based on the ratio of the ambient wind speed and the oncoming wind speed, and the target correction factor, the outlet resistance coefficient calculation unit included in the outlet resistance calculation model is corrected, including:

[0017] Replace the independent variable of the preset polynomial function with the ratio of the ambient wind speed and the oncoming wind speed;

[0018] Based on the target correction factor, at least one coefficient in the preset polynomial function corresponding to the air outlet resistance coefficient calculation unit is corrected.

[0019] In one possible design, the modified outlet resistance calculation model includes an outlet resistance calculation unit and a modified outlet resistance coefficient calculation unit.

[0020] The real-time ambient wind speed and the real-time oncoming wind speed are input into the corrected outlet resistance calculation model, including:

[0021] The real-time ambient wind speed and the real-time oncoming wind speed are input into the corrected outlet resistance coefficient calculation unit to determine the outlet resistance coefficient output by the corrected outlet resistance coefficient calculation unit.

[0022] The real-time air density at the inlet of the indirect air-cooled tower is obtained, and the real-time oncoming wind speed, the outlet resistance coefficient, and the real-time air density are input into the outlet resistance calculation unit.

[0023] In one possible design, determining the outlet resistance output by the modified outlet resistance calculation model includes:

[0024] Based on the air outlet resistance calculation unit, the real-time air density, the air outlet resistance coefficient, and the real-time oncoming wind speed are processed;

[0025] Determine the outlet resistance output by the outlet resistance calculation unit; wherein, the outlet resistance = 1 / 2 × real-time air density × outlet resistance coefficient × square of real-time oncoming wind speed.

[0026] In one possible design, before obtaining the ambient wind speed in the area where the indirect air-cooled tower is located, the method further includes:

[0027] In response to the mechanical ventilation convection simulation operation for the indirect air-cooled tower, a preset computational fluid dynamics method is used to numerically simulate the mechanical ventilation convection process of the indirect air-cooled tower and determine the numerical simulation results; wherein, the mechanical ventilation convection simulation operation is used to simulate the air flow and heat exchange process inside the indirect air-cooled tower.

[0028] Based on the numerical simulation results, a calculation model for the outlet resistance of the indirect air-cooled tower is constructed.

[0029] In one possible design, based on the numerical simulation results, a calculation model for the outlet resistance of the indirect air-cooled tower is constructed, including:

[0030] Based on the numerical simulation results, the simulated values ​​of the inlet face wind speed and outlet resistance coefficient of the indirect air-cooled tower are extracted.

[0031] Curve fitting is performed on the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet drag coefficient to establish a functional relationship between the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet drag coefficient; wherein the functional relationship is in polynomial form.

[0032] Obtain the preset calculation expression corresponding to the air outlet resistance of the indirect air-cooled tower;

[0033] An outlet resistance coefficient calculation unit is generated based on the aforementioned functional relationship, and an outlet resistance calculation unit is generated based on the aforementioned preset calculation expression; based on the outlet resistance coefficient calculation unit and the outlet resistance calculation unit, an outlet resistance calculation model for the indirect air-cooled tower is constructed.

[0034] Secondly, this application provides a device for calculating and optimizing the outlet resistance of an indirect air-cooled tower, comprising:

[0035] The first processing module is used to obtain the ambient wind speed of the area where the indirect air-cooled tower is located at a preset historical time, and to calculate the oncoming wind speed at the air inlet of the indirect air-cooled tower; wherein, the oncoming wind speed represents the average flow velocity of air flowing through the air inlet of the indirect air-cooled tower.

[0036] The correction module is used to correct the pre-constructed outlet resistance calculation model for the indirect air-cooled tower based on the ratio of the ambient wind speed and the oncoming wind speed.

[0037] The first processing module is also used to obtain the real-time ambient wind speed of the area where the indirect air-cooled tower is located, and to calculate the real-time oncoming wind speed at the air inlet of the indirect air-cooled tower.

[0038] The second processing module is used to input the real-time ambient wind speed and the real-time oncoming wind speed into the modified outlet resistance calculation model, and determine the outlet resistance output by the modified outlet resistance calculation model; wherein, the outlet resistance represents the pressure loss generated when air is discharged from the outlet of the indirect air-cooled tower.

[0039] In one possible design, the outlet resistance calculation model includes an outlet resistance coefficient calculation unit and an outlet resistance calculation unit.

[0040] The correction module includes:

[0041] The calculation submodule is used to calculate the target correction factor based on the ratio of the ambient wind speed and the oncoming wind speed;

[0042] The correction submodule is used to correct the air outlet resistance coefficient calculation unit included in the air outlet resistance calculation model based on the ratio of the ambient wind speed and the oncoming wind speed and the target correction factor.

[0043] In one possible design, the outlet resistance coefficient calculation unit uses a preset polynomial function to calculate the resistance coefficient of the indirect air-cooled tower outlet.

[0044] The correction submodule includes:

[0045] A replacement component is used to replace the independent variable of the preset polynomial function with the ratio of the ambient wind speed and the oncoming wind speed;

[0046] A correction component is used to correct at least one coefficient of the preset polynomial function corresponding to the air outlet resistance coefficient calculation unit based on the target correction factor.

[0047] In one possible design, the modified outlet resistance calculation model includes an outlet resistance calculation unit and a modified outlet resistance coefficient calculation unit.

[0048] The second processing module includes:

[0049] The input submodule is used to input the real-time ambient wind speed and the real-time oncoming wind speed into the corrected outlet resistance coefficient calculation unit.

[0050] The determination submodule is used to determine the air outlet resistance coefficient output by the corrected air outlet resistance coefficient calculation unit;

[0051] The first acquisition submodule is used to acquire the real-time air density at the air inlet of the indirect air-cooled tower;

[0052] The input submodule is also used to input the real-time oncoming wind speed, the air outlet resistance coefficient, and the real-time air density into the air outlet resistance calculation unit.

[0053] In one possible design, the second processing module further includes:

[0054] The processing submodule is used to process the real-time air density, the air outlet resistance coefficient, and the real-time oncoming wind speed based on the air outlet resistance calculation unit.

[0055] The determining submodule is also used to determine the outlet resistance output by the outlet resistance calculation unit; wherein, the outlet resistance = 1 / 2 × real-time air density × outlet resistance coefficient × square of real-time oncoming wind speed.

[0056] In one possible design, the outlet resistance calculation and optimization device for the indirect air-cooled tower further includes:

[0057] The simulation module is used to respond to the mechanical ventilation convection simulation operation for the indirect air-cooled tower, and to perform numerical simulation of the mechanical ventilation convection process of the indirect air-cooled tower using a preset computational fluid dynamics method, and to determine the numerical simulation results; wherein, the mechanical ventilation convection simulation operation is used to simulate the air flow and heat exchange process inside the indirect air-cooled tower.

[0058] A construction module is used to construct a calculation model for the outlet resistance of the indirect air-cooled tower based on the numerical simulation results.

[0059] In one possible design, the building block includes:

[0060] The extraction submodule is used to extract the simulated values ​​of the inlet face wind speed and the outlet resistance coefficient of the indirect air-cooled tower based on the numerical simulation results.

[0061] The fitting submodule is used to perform curve fitting on the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet resistance coefficient to establish a functional relationship between the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet resistance coefficient; wherein the functional relationship is in polynomial form.

[0062] The second acquisition submodule is used to acquire the preset calculation expression corresponding to the air outlet resistance of the indirect air-cooled tower;

[0063] A submodule is constructed to generate an outlet resistance coefficient calculation unit based on the functional relationship and an outlet resistance calculation unit based on the preset calculation expression; based on the outlet resistance coefficient calculation unit and the outlet resistance calculation unit, an outlet resistance calculation model for the indirect air-cooled tower is constructed.

[0064] Thirdly, this application provides an electronic device comprising: at least one processor and a memory; the memory storing computer-executable instructions; the at least one processor executing the computer-executable instructions stored in the memory, causing the at least one processor to perform the method described in the first aspect and / or various possible designs of the first aspect.

[0065] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the method described in the first aspect and / or various possible designs of the first aspect.

[0066] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the method described in the first aspect and / or various possible designs of the first aspect.

[0067] The method, apparatus, and electronic equipment for calculating and optimizing the outlet resistance of an indirect air-cooled tower provided in this application acquire the ambient wind speed of the area where the indirect air-cooled tower is located at a preset historical time, and calculate the oncoming wind speed at the inlet of the indirect air-cooled tower. The oncoming wind speed represents the average flow velocity of air passing through the inlet of the indirect air-cooled tower. Then, based on the ratio of the ambient wind speed and the oncoming wind speed, the pre-constructed outlet resistance calculation model for the indirect air-cooled tower is modified. Further, the real-time ambient wind speed of the area where the indirect air-cooled tower is located is acquired, and the real-time oncoming wind speed at the inlet of the indirect air-cooled tower is calculated. The real-time ambient wind speed and the real-time oncoming wind speed are input into the modified outlet resistance calculation model to determine the outlet resistance output by the modified outlet resistance calculation model. The outlet resistance represents the pressure loss generated when air is discharged from the outlet of the indirect air-cooled tower. This application introduces the ratio of ambient wind speed to oncoming wind speed as a correction criterion, enabling the pre-built outlet resistance calculation model to be specifically corrected based on actual wind conditions, and outputs more accurate outlet resistance results that better reflect the actual wind field conditions under subsequent real-time operating conditions. Attached Figure Description

[0068] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0069] Figure 1 A flowchart illustrating the method for calculating and optimizing the outlet resistance of an indirect air-cooled tower provided in this application embodiment;

[0070] Figure 2 A schematic diagram illustrating a scenario for the method of calculating and optimizing the outlet resistance of an indirect air-cooled tower provided in this application embodiment;

[0071] Figure 3 A schematic diagram of the structure of the indirect air-cooled tower outlet resistance calculation and optimization device provided in the embodiments of this application;

[0072] Figure 4 This is a hardware structure diagram of the electronic device provided in the embodiments of this application.

[0073] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0074] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0075] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0076] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0077] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with relevant laws, regulations and standards, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0078] First, the terms used in this application will be explained.

[0079] Indirect air-cooled tower: A large hyperbolic steel structure cooling tower used in thermal power plants or power stations to cool the exhaust steam of steam turbines. It is widely used in industrial scenarios such as thermal power generation, chemical and metallurgical industries that require large-scale heat dissipation, and is especially suitable for areas with relatively scarce water resources that need to use air as the main cooling medium.

[0080] Indirect air-cooled towers are typically an important component of cold-end heat dissipation systems, forming a complete cooling operation system together with heat exchangers, circulating water systems, air duct structures, tower inlet and outlet air channels, and on-site monitoring devices.

[0081] When an indirect air-cooled tower is in operation, air enters the tower through the inlet, forms a non-contact heat exchange with the internal heat exchange units, and is then discharged through the outlet. The outlet resistance directly affects the airflow capacity, heat exchange efficiency, and overall cooling performance within the tower. During the engineering design phase, it is usually necessary to calculate the outlet resistance to determine whether the equipment selection and structural design of the indirect air-cooled tower meet the expected operating conditions.

[0082] Therefore, the calculation of the air outlet resistance of the indirect air-cooled tower is not only related to the parameter verification in the design stage, but also to the state judgment and control in the operation stage, and has obvious engineering application value and practical needs.

[0083] In existing technologies, the calculation of outlet resistance of indirect air-cooled towers mainly employs a one-dimensional simplified calculation method. This method typically establishes a simplified flow model based on design conditions, treating airflow as a relatively ideal, stable flow. Then, by combining empirical coefficients, resistance formulas, and design flow parameters, the calculated result of the outlet pressure loss, i.e., the outlet resistance, is obtained.

[0084] However, one-dimensional simplified calculation methods are usually based on steady-state, uniform, and idealized conditions, and do not adequately consider the impact of ambient wind on the external flow around the tower and the internal flow organization. They often fail to accurately reflect the changes in outlet pressure loss under complex wind conditions.

[0085] When strong ambient winds occur on site, the actual wind conditions inside the indirect air-cooled tower will change significantly, and the outlet resistance will deviate from the design value. The one-dimensional simplified calculation method is difficult to effectively correct this deviation.

[0086] Therefore, existing technologies often face the problem of poor adaptability to dynamic wind conditions under complex wind conditions, which leads to insufficient accuracy in the calculated outlet resistance.

[0087] Starting with the dynamic impact of ambient wind on the outlet resistance of an indirect air-cooled tower, the inventors discovered that ambient wind disrupts the axisymmetric flow field within the tower, causing the outlet resistance to deviate from the predicted value of a simplified one-dimensional calculation method. To address this, the inventors proposed a core technical approach using "ambient wind speed / inlet face wind speed" as the central parameter, abstracting the influence of ambient wind on outlet resistance from the complex flow field into a quantifiable dimensionless parameter. Subsequently, by embedding this dimensionless parameter into an existing outlet resistance calculation model, the model is modified, thereby adapting the modified outlet resistance calculation model to the dynamic response requirements of ambient wind and improving the accuracy of the outlet resistance calculation results.

[0088] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0089] This application provides an optimization method for calculating the outlet resistance of an indirect air-cooled tower. Figure 1 This is a flowchart illustrating the method for calculating and optimizing the outlet resistance of an indirect air-cooled tower provided in an embodiment of this application, as shown below. Figure 1 As shown, the optimization method for calculating the outlet resistance of this indirect air-cooled tower includes:

[0090] S101. At a preset historical time, obtain the ambient wind speed in the area where the indirect air-cooled tower is located, and calculate the oncoming wind speed at the air inlet of the indirect air-cooled tower.

[0091] For illustrative purposes, the preset historical time points can be set according to the engineering application requirements. For example, in a design verification scenario, the preset historical time points can be selected from representative typical meteorological periods, such as the period when the seasonal prevailing wind direction occurs, the design high temperature period, or the high load operation period of the unit. In an operation analysis scenario, the preset historical time points can be selected from several sampling times within a predetermined time window from the current time, such as the previous hour, the previous 24 hours, or multiple discrete times within the previous operating cycle.

[0092] Ambient wind speed characterizes the velocity of the natural wind field surrounding the indirect air-cooled tower and is a crucial fundamental quantity affecting the external airflow around the tower, the air intake organization inside the tower, and subsequent model corrections. In this embodiment, ambient wind speed specifically refers to the wind speed at a horizontal plane located within the unobstructed area surrounding the indirect air-cooled tower, at a height equal to the center height of the air inlet.

[0093] Ambient wind speed can be obtained by installing wind speed acquisition devices around the indirect air-cooled tower. These devices can be ultrasonic anemometers, mechanical cup anemometers, or meteorological monitoring devices with digital output interfaces. To improve the representativeness of the acquired ambient wind speed to the wind field of the tower area, the acquisition location should be selected in an area that is not easily obstructed by local obstacles and has a fixed relative position to the tower. The acquisition height should be set at a horizontal plane equal to the center height of the air inlet.

[0094] In one possible implementation, the process of acquiring ambient wind speed is as follows: at a preset historical time, a wind speed acquisition device collects a historical wind speed sequence according to a set sampling period. Then, the historical wind speed sequence is timestamped, outliers are removed, and smoothed. The average value of the processed historical wind speed sequence is then taken to generate the ambient wind speed at the preset historical time.

[0095] It should be understood that obtaining ambient wind speed using wind speed acquisition equipment is a common practice in current engineering projects. However, for scenarios where on-site data acquisition is not feasible, such as when an indirect air-cooled tower is still in the drawing or planning stage and there is no physical location to install wind speed acquisition equipment, the ambient wind speed determined under the design conditions can be used. Under the design conditions, the ambient wind speed is determined based on meteorological statistics of the area where the indirect air-cooled tower is located.

[0096] The face wind speed represents the average flow velocity of air passing through the air inlet of the indirect air-cooled tower. It essentially reflects the actual air intake capacity and air intake status of the indirect air-cooled tower at a preset historical time. It is the core parameter for establishing the coupling relationship between ambient wind speed and tower ventilation capacity.

[0097] The face velocity can be calculated based on relevant parameters of the inlet of the indirect air-cooled tower. Specifically, the face velocity can be determined based on the relationship between the effective flow area of ​​the inlet and the design air volume:

[0098]

[0099] In the formula, Indicates the headwind speed. This indicates the effective airflow area of ​​the air inlet. This indicates the design air intake volume, which refers to the expected airflow through the air inlet.

[0100] The effective flow area of ​​the air inlet can be calculated based on the structural drawings of the indirect air-cooled tower, the louver structure, and the shading ratio of the supporting components. The design air intake volume can be calculated by combining the radiator operating parameters, fan characteristic curves, inlet and outlet pressure differences, and air state parameters.

[0101] For emphasis, if an indirect air-cooled tower has multiple air inlets, the local oncoming wind speed of each air inlet can be calculated separately, and then the overall oncoming wind speed can be obtained by using an area-weighted average method.

[0102] S102. Based on the ratio of ambient wind speed and oncoming wind speed, the calculation model for the outlet resistance of the indirect air-cooled tower is modified.

[0103] It should be explained that the outlet resistance calculation model is used to quantitatively describe the pressure loss generated when air is discharged from inside the indirect air-cooled tower through the outlet. The pressure loss generated when air is discharged from inside the indirect air-cooled tower through the outlet is the outlet resistance.

[0104] In this embodiment, the outlet resistance calculation model is constructed by simulating the mechanical ventilation convection process of an indirect air-cooled tower. Specifically, the construction process of the outlet resistance calculation model is as follows:

[0105] Step a1: In response to the mechanical ventilation convection simulation operation for the indirect air-cooled tower, a pre-set computational fluid dynamics method is used to numerically simulate the mechanical ventilation convection process of the indirect air-cooled tower and determine the numerical simulation results.

[0106] The mechanical ventilation convection simulation is used to simulate the airflow and heat transfer processes inside an indirect air-cooled tower under forced ventilation conditions. A pre-defined computational fluid dynamics method is used to couple and solve the airflow field, pressure field, and temperature field to obtain numerical simulation results that reflect the airflow organization characteristics, local velocity distribution, and heat transfer intensity distribution within the tower.

[0107] It is worth noting that the numerical simulation of the mechanical ventilation convection process of the indirect air-cooled tower is not conducted on a real indirect air-cooled tower, but rather a virtual numerical simulation experiment is carried out in a computer using a geometric model of the indirect air-cooled tower.

[0108] Illustratively, the geometric model of an indirect air-cooled tower is constructed in a computer, relying on the tower's geometry (such as tower type, radiator type, etc.), heat exchange unit arrangement, duct boundaries, and fan operating parameters. The fan drives airflow, creating forced ventilation conditions for the indirect air-cooled tower.

[0109] Step a2: Based on the numerical simulation results, construct a calculation model for the outlet resistance of the indirect air-cooled tower.

[0110] To improve the adaptability of the outlet resistance calculation model to different operating conditions of the indirect air-cooled tower, this embodiment sets up multiple operating conditions to conduct multiple numerical simulations using the geometric model of the indirect air-cooled tower and obtain multiple numerical simulation results.

[0111] When constructing the outlet resistance calculation model based on numerical simulation results, the simulated values ​​of the inlet face wind speed and outlet resistance coefficient of the indirect air-cooled tower are first extracted based on the numerical simulation results. It can be understood that the simulated inlet face wind speed refers to the average flow velocity of air passing through the inlet in the numerical simulation experiment; the simulated outlet resistance coefficient refers to the local resistance characteristics of the outlet in the numerical simulation experiment.

[0112] Subsequently, curve fitting was performed on the simulated values ​​of the inlet face wind speed and the outlet resistance coefficient to establish a polynomial function relationship between them.

[0113] Curve fitting is used to convert discrete simulation samples into continuous computable relationships. For example, the least squares fitting method can be used to establish a polynomial function relationship between the simulated values ​​of the inlet wind speed and the simulated values ​​of the outlet drag coefficient.

[0114] It should be understood that in the polynomial function relationship, the independent variable is the simulated value of the inlet face wind speed, and the dependent variable is the simulated value of the outlet drag coefficient. That is, the polynomial can be written as an analytical expression of the outlet drag coefficient simulated value with respect to the simulated value of the inlet face wind speed, thus forming the outlet drag coefficient calculation unit.

[0115] Furthermore, a preset calculation expression corresponding to the outlet resistance of the indirect air-cooled tower is obtained, and an outlet resistance calculation unit is formed based on the preset calculation expression. Explained, the preset calculation expression is a known engineering formula in fluid dynamics used to calculate outlet resistance. The preset calculation expression obtained in this embodiment is an engineering formula reflecting the correspondence between outlet resistance and outlet resistance coefficient, air density, and oncoming wind speed.

[0116] The outlet resistance coefficient calculation unit based on the functional relationship and the outlet resistance calculation unit based on the preset calculation expression together constitute the outlet resistance calculation model of the indirect air-cooled tower.

[0117] In practical applications, the outlet resistance calculation model first calculates the corresponding outlet resistance coefficient based on the input oncoming wind speed, and then calculates the outlet resistance by combining the outlet resistance coefficient, air density, and oncoming wind speed.

[0118] It is evident that the outlet resistance calculation model can transform the complex flow field information obtained from numerical simulation experiments into a reusable calculation model. This retains the numerical simulation results' ability to characterize complex wind conditions while reducing the computational cost of outlet resistance. Since a polynomial relationship is established between the outlet resistance coefficient and the oncoming wind speed, the outlet resistance calculation model exhibits good continuity and computability under different operating conditions, which is beneficial for improving the accuracy, stability, and engineering applicability of indirect air-cooled tower outlet resistance calculations.

[0119] However, the influence of ambient wind speed on the outlet resistance of the indirect air-cooled tower was not considered in the construction of the outlet resistance calculation model. Therefore, this step further introduces the ratio of ambient wind speed to oncoming wind speed as a correction basis to revise the outlet resistance calculation model.

[0120] It should be noted that the modification of the outlet resistance calculation model in this embodiment specifically refers to the modification of the outlet resistance coefficient calculation unit in the outlet resistance calculation model. Specifically, a target correction factor is calculated based on the ratio of ambient wind speed and oncoming wind speed. Then, the outlet resistance coefficient calculation unit is modified based on the ratio of ambient wind speed and oncoming wind speed and the target correction factor.

[0121] Interpretively, the ratio of ambient wind speed to oncoming wind speed can be considered a dimensionless wind speed, used to reflect the degree of disturbance of the external flow on the indirect air-cooled tower. When the dimensionless wind speed increases, it usually means that the influence of the ambient wind speed on the indirect air-cooled tower is enhanced, and effects such as external flow around the tower, local separation, hot air recirculation, and outlet air deflection are more likely to be aggravated.

[0122] The target correction factor reflects the influence of dimensionless wind speed on the outlet drag coefficient calculation unit. Specifically, there is a fixed preset mapping relationship between the target correction factor and the dimensionless wind speed, meaning that the target correction factor can be calculated by combining the dimensionless wind speed and the preset mapping relationship. Then, based on the target correction factor, the preset calculation expression in the outlet drag coefficient calculation unit is compensated.

[0123] In this embodiment, the correction of the air outlet resistance coefficient calculation unit includes two aspects.

[0124] On the one hand, the independent variable of the preset polynomial function in the outlet resistance coefficient calculation unit is replaced with dimensionless wind speed, that is, the ratio of ambient wind speed and oncoming wind speed. As can be seen from the construction process of the outlet resistance calculation model, the preset polynomial function here is the functional relationship used to reflect the mapping relationship between the oncoming wind speed at the inlet and the outlet resistance coefficient.

[0125] The independent variable of the preset polynomial function is the inlet wind speed. After replacing the independent variable of the preset polynomial function with the dimensionless wind speed, the input of the outlet resistance coefficient calculation unit is transformed from a single parameter into a ratio parameter that can reflect the influence of external wind conditions, thereby enhancing the sensitivity of the outlet resistance coefficient calculation unit to changes in ambient wind.

[0126] On the other hand, based on the target correction factor, at least one coefficient in the preset polynomial function is corrected. The preset polynomial function can be formally written as a functional relationship consisting of a constant term, a first-order term, and higher-order terms.

[0127] That is, based on the target correction factor, at least one coefficient of the constant term, first-order term, or higher-order term is adjusted to compensate for deviations under different environmental wind conditions. For example, when the dimensionless wind speed is small, it indicates that the environmental wind disturbance is relatively limited, and a small correction amplitude is sufficient. In this case, only the constant term of the preset polynomial function can be corrected. However, when the dimensionless wind speed is very large, it indicates that the environmental wind causes serious interference to the indirect air-cooled tower, requiring a larger correction amplitude. In this case, all coefficients in the preset polynomial function can be corrected.

[0128] In the revised outlet drag coefficient calculation unit, the dependent variable of the preset polynomial function remains the outlet drag coefficient, while the independent variable is transformed into dimensionless wind speed (ambient wind speed / face wind speed). In a specific example, the revised preset polynomial function is assumed to be: In the formula, Indicates the air outlet resistance coefficient. This represents dimensionless wind speed. Figure 2 This is a schematic diagram illustrating a scenario for the optimization method of calculating the outlet resistance of an indirect air-cooled tower provided in this application embodiment. The modified preset polynomial function and the curve reflecting the relationship between the dimensionless wind speed and the outlet resistance coefficient are shown below. Figure 2 As shown.

[0129] This step introduces dimensionless wind speed and target correction factor, enabling the outlet resistance calculation model to automatically adjust the outlet resistance coefficient calculation relationship for different environmental wind conditions, thereby making the outlet resistance calculation model more consistent with the actual smooth state.

[0130] S103. Obtain the real-time ambient wind speed in the area where the indirect air-cooled tower is located, and calculate the real-time oncoming wind speed at the air inlet of the indirect air-cooled tower.

[0131] Because the ambient wind typically exhibits time-varying characteristics during the operation of an indirect air-cooled tower, and the tower load, heat exchange unit status, fan operating conditions, and air state parameters may all change, it is still necessary to continuously acquire real-time input at the current moment after correcting the outlet resistance calculation model. This ensures that the outlet resistance output by the subsequent outlet resistance calculation model has practical operational significance.

[0132] Understandably, real-time ambient wind speed and real-time oncoming wind speed together constitute the input variables for the corrected outlet resistance calculation model at the current moment. The acquisition of real-time ambient wind speed and the calculation of real-time oncoming wind speed are logically consistent with the acquisition of ambient wind speed and the calculation of oncoming wind speed at preset historical moments. Therefore, the acquisition of real-time ambient wind speed and the calculation of real-time oncoming wind speed will not be elaborated further here.

[0133] It is worth noting that, in order to ensure a balance between the real-time performance and stability of the real-time environmental wind speed, a fixed acquisition period can be set, such as acquiring the real-time environmental wind speed once every ten seconds, every thirty seconds, or every minute.

[0134] For real-time face velocity, since it is related to the effective flow area of ​​the air inlet and the designed air volume, and the update rate of the effective flow area and the designed air volume is relatively slow, the calculation cycle for real-time face velocity can be set to a longer period, such as once every hour or once a day.

[0135] S104. Input the real-time ambient wind speed and real-time oncoming wind speed into the modified outlet resistance calculation model, and determine the outlet resistance output by the modified outlet resistance calculation model.

[0136] Clearly, the modified outlet resistance calculation model includes an outlet resistance calculation unit and a modified outlet resistance coefficient calculation unit. The modified outlet resistance calculation model is used to calculate the outlet resistance coefficient under real-time environmental air conditions and further output the outlet resistance. Outlet resistance is an important parameter for evaluating the smoothness of exhaust flow and the degree of airflow obstruction within an indirect air-cooled tower; it can be used to determine ventilation performance, heat exchange capacity, and operational safety margin.

[0137] In the specific implementation, the real-time ambient wind speed and the real-time oncoming wind speed are input into the corrected outlet resistance coefficient calculation unit to determine the outlet resistance coefficient output by the corrected outlet resistance coefficient calculation unit.

[0138] In one possible implementation, the outlet drag coefficient calculation unit can be implemented collaboratively by a controller and a memory. The memory stores preset polynomial functions. The controller then calls the pre-stored preset polynomial functions and performs calculations using real-time ambient wind speed and real-time oncoming wind speed as input parameters to obtain the corresponding outlet drag coefficient.

[0139] Next, the real-time air density at the inlet of the indirect air-cooled tower is obtained, and the real-time oncoming wind speed, outlet resistance coefficient, and real-time air density are input into the outlet resistance calculation unit. The real-time air density can be calculated from the temperature, pressure, and humidity parameters near the inlet, or it can be directly measured by a density sensor. The specific method of obtaining the real-time air density is not limited here.

[0140] In one possible implementation, the outlet resistance calculation unit can be implemented by a numerical calculator. This numerical calculator establishes a pressure loss calculation relationship based on the outlet resistance coefficient, real-time oncoming wind speed, and real-time air density, and then combines the air dynamic pressure with the outlet resistance coefficient to output the outlet resistance.

[0141] In practical implementation, the outlet resistance calculation unit receives the real-time air density, outlet resistance coefficient, and real-time oncoming wind speed, and then performs a product calculation according to the fluid pressure loss relationship. Specifically, it squares the real-time oncoming wind speed and then multiplies it by half of the real-time air density and outlet resistance coefficient to output the corresponding outlet resistance. That is, outlet resistance = 1 / 2 × real-time air density × outlet resistance coefficient × square of real-time oncoming wind speed.

[0142] The working principle of the outlet resistance calculation unit is to reflect the environmental conditions through real-time air density, the structural influence through the outlet resistance coefficient, and the inflow intensity through real-time oncoming wind speed. This allows the inertial and obstructive effects of the outlet airflow to be uniformly mapped into a preset calculation expression for the outlet resistance.

[0143] As can be seen, the modified outlet resistance calculation model first uses real-time ambient wind speed and real-time oncoming wind speed to obtain the modified outlet resistance coefficient. Then, it further combines the real-time air density at the air inlet to calculate the outlet resistance, thus incorporating the influence of ambient wind disturbance on the airflow state inside the tower into the calculation process.

[0144] This allows the calculated results of the air outlet resistance to be closer to the actual situation on site, improving the accuracy of the calculation of the air outlet resistance under complex wind conditions and the reliability of the operation assessment.

[0145] In one possible implementation, the outlet resistance output by the outlet resistance calculation unit can be further used to generate operational evaluation results. For example, when the calculated outlet resistance exceeds the design threshold or operational alarm threshold, a prompt is sent to the operator via computer, indicating that the indirect air-cooled tower may experience issues such as obstructed air intake, enhanced hot air recirculation, localized flow field turbulence, or equipment operating conditions deviating from the design range.

[0146] In addition, the outlet resistance output by the outlet resistance calculation unit can be compared with the outlet resistance records under historical load conditions to analyze the trend of ventilation performance changes of the indirect air-cooled tower, thereby providing a basis for structural optimization, flow guide component adjustment, operation strategy revision, or maintenance of the indirect air-cooled tower.

[0147] In another possible implementation, the calculated outlet resistance can be used in conjunction with other thermal parameters. For example, the outlet resistance can be combined with heat exchanger outlet temperature, condenser back pressure, fan current, or circulating water temperature to form a joint analysis index. When the outlet resistance rises abnormally, it can be further determined whether it has significantly affected the cold-end efficiency of the indirect air-cooled unit.

[0148] The method for optimizing the outlet resistance calculation of an indirect air-cooled tower provided in this application involves acquiring the ambient wind speed of the area where the indirect air-cooled tower is located and calculating the oncoming wind speed at the inlet of the indirect air-cooled tower at a preset historical time. Then, based on the ratio of the ambient wind speed and the oncoming wind speed, a target correction factor is calculated, and based on this target correction factor, at least one coefficient in the preset polynomial function corresponding to the outlet resistance coefficient calculation unit is corrected. Simultaneously, the independent variable of the preset polynomial function is replaced with the ratio of the ambient wind speed and the oncoming wind speed. This yields the corrected outlet resistance coefficient calculation unit. Next, the real-time ambient wind speed of the area where the indirect air-cooled tower is located and the real-time oncoming wind speed at the inlet of the indirect air-cooled tower are acquired. The real-time ambient wind speed and the real-time oncoming wind speed are input into the corrected outlet resistance coefficient calculation unit to determine the outlet resistance coefficient output by the corrected outlet resistance coefficient calculation unit. To further obtain the real-time air density at the inlet of the indirect air-cooled tower, the real-time oncoming wind speed, outlet resistance coefficient, and real-time air density are input into the outlet resistance calculation unit to determine the outlet resistance output by the outlet resistance calculation unit. The outlet resistance coefficient calculation unit and the outlet resistance calculation unit together form the outlet resistance calculation model. This application introduces the ratio of ambient wind speed to oncoming wind speed as a correction criterion, enabling the pre-constructed outlet resistance calculation model to be specifically corrected based on actual wind conditions, and outputting a more accurate outlet resistance result that better reflects the actual wind field conditions under subsequent real-time operating conditions.

[0149] Figure 3This is a schematic diagram of the structure of the indirect air-cooled tower outlet resistance calculation and optimization device provided in the embodiments of this application, as shown below. Figure 3 As shown, the outlet resistance calculation and optimization device 30 of the indirect air-cooled tower includes: a first processing module 301, a correction module 302, and a second processing module 303.

[0150] The first processing module 301 is used to obtain the ambient wind speed of the area where the indirect air-cooled tower is located at a preset historical time, and to calculate the oncoming wind speed at the air inlet of the indirect air-cooled tower; wherein, the oncoming wind speed represents the average flow velocity of air flowing through the air inlet of the indirect air-cooled tower.

[0151] The correction module 302 is used to correct the pre-constructed outlet resistance calculation model for the indirect air-cooled tower based on the ratio of ambient wind speed and oncoming wind speed.

[0152] The first processing module 301 is also used to obtain the real-time ambient wind speed of the area where the indirect air-cooled tower is located, and to calculate the real-time oncoming wind speed at the air inlet of the indirect air-cooled tower.

[0153] The second processing module 303 is used to input the real-time ambient wind speed and the real-time oncoming wind speed into the modified outlet resistance calculation model, and determine the outlet resistance output by the modified outlet resistance calculation model; wherein, the outlet resistance represents the pressure loss generated when air is discharged from the outlet of the indirect air-cooled tower.

[0154] In one possible design, the outlet resistance calculation model includes an outlet resistance coefficient calculation unit and an outlet resistance calculation unit.

[0155] Correction module 302 includes:

[0156] The calculation submodule 3021 is used to calculate the target correction factor based on the ratio of ambient wind speed and oncoming wind speed.

[0157] The correction submodule 3022 is used to correct the outlet resistance coefficient calculation unit included in the outlet resistance calculation model based on the ratio of ambient wind speed and oncoming wind speed and the target correction factor.

[0158] In one possible design, the outlet resistance coefficient calculation unit uses a preset polynomial function to calculate the resistance coefficient of the indirect air-cooled tower outlet.

[0159] Correction submodule 3022 includes:

[0160] The replacement component is used to replace the independent variable of a preset polynomial function with the ratio of ambient wind speed and headwind speed.

[0161] The correction component is used to correct at least one coefficient in the preset polynomial function corresponding to the air outlet resistance coefficient calculation unit based on the target correction factor.

[0162] In one possible design, the modified outlet resistance calculation model includes an outlet resistance calculation unit and a modified outlet resistance coefficient calculation unit.

[0163] The second processing module 303 includes:

[0164] Input submodule 3031 is used to input the real-time ambient wind speed and real-time oncoming wind speed into the corrected outlet resistance coefficient calculation unit;

[0165] The submodule 3032 is used to determine the outlet resistance coefficient output by the corrected outlet resistance coefficient calculation unit.

[0166] The first acquisition submodule 3033 is used to acquire the real-time air density at the air inlet of the indirect air-cooled tower;

[0167] The input submodule 3031 is also used to input the real-time oncoming wind speed, outlet resistance coefficient and real-time air density into the outlet resistance calculation unit.

[0168] In one possible design, the second processing module 303 further includes:

[0169] The processing submodule 3034 is used to process the real-time air density, air outlet resistance coefficient and real-time oncoming wind speed based on the air outlet resistance calculation unit;

[0170] The determination submodule 3032 is also used to determine the outlet resistance output by the outlet resistance calculation unit; where, outlet resistance = 1 / 2 × real-time air density × outlet resistance coefficient × the square of real-time oncoming wind speed.

[0171] In one possible design, the outlet resistance calculation and optimization device 30 for the indirect air-cooled tower further includes:

[0172] The simulation module 304 is used to respond to the mechanical ventilation convection simulation operation for the indirect air-cooled tower. It uses a preset computational fluid dynamics method to numerically simulate the mechanical ventilation convection process of the indirect air-cooled tower and determine the numerical simulation results. The mechanical ventilation convection simulation operation is used to simulate the air flow and heat exchange process inside the indirect air-cooled tower.

[0173] Module 305 is used to construct a calculation model for the outlet resistance of an indirect air-cooled tower based on numerical simulation results.

[0174] In one possible design, building module 305 includes:

[0175] Extraction submodule 3051 is used to extract the simulated values ​​of the inlet face wind speed and outlet resistance coefficient of the indirect air-cooled tower based on the numerical simulation results.

[0176] The fitting submodule 3052 is used to perform curve fitting on the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet resistance coefficient to establish a functional relationship between the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet resistance coefficient; wherein the functional relationship is in polynomial form.

[0177] The second acquisition submodule 3053 is used to acquire the preset calculation expression corresponding to the outlet resistance of the indirect air-cooled tower.

[0178] Submodule 3054 is constructed to generate an outlet resistance coefficient calculation unit based on a functional relationship and an outlet resistance calculation unit based on a preset calculation expression; based on the outlet resistance coefficient calculation unit and the outlet resistance calculation unit, an outlet resistance calculation model for the indirect air-cooled tower is constructed.

[0179] The outlet resistance calculation and optimization device for the indirect air-cooled tower provided in this application embodiment can be used to execute the outlet resistance calculation and optimization method for the indirect air-cooled tower in any of the above embodiments. Its implementation principle and technical effect are similar, and will not be described again here.

[0180] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented in software via processing element calls, while others are implemented in hardware. Additionally, these modules can be fully or partially integrated together, or implemented independently. The processing element here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each of the above modules can be completed through the integrated logic circuits in the hardware of the processor element or through software instructions.

[0181] Figure 4 A schematic diagram of the structure of the electronic device provided in this application. Figure 4 As shown, the electronic device 40 provided in this embodiment includes at least one processor 401 and a memory 402. Optionally, the electronic device 40 further includes a communication component 403. The processor 401, memory 402, and communication component 403 are connected via a bus 404.

[0182] In the specific implementation process, at least one processor 401 executes computer execution instructions stored in memory 402, causing at least one processor 401 to execute the above-mentioned method for calculating and optimizing the outlet resistance of the indirect air-cooled tower.

[0183] The specific implementation process of processor 401 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0184] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0185] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0186] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0187] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method for optimizing the outlet resistance calculation of an indirect air-cooled tower.

[0188] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method for optimizing the outlet resistance of an indirect air-cooled tower.

[0189] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0190] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an application-specific integrated circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0191] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0192] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0193] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0194] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0195] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0196] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A method for calculating and optimizing the outlet resistance of an indirect air-cooled tower, characterized in that, include: At a preset historical time, the ambient wind speed in the area where the indirect air-cooled tower is located is obtained, and the oncoming wind speed at the air inlet of the indirect air-cooled tower is calculated; wherein, the oncoming wind speed represents the average flow velocity of air flowing through the air inlet of the indirect air-cooled tower. Based on the ratio of the ambient wind speed and the oncoming wind speed, the pre-constructed outlet resistance calculation model for the indirect air-cooled tower is modified; Obtain the real-time ambient wind speed in the area where the indirect air-cooled tower is located, and calculate the real-time oncoming wind speed at the air inlet of the indirect air-cooled tower. The real-time ambient wind speed and the real-time oncoming wind speed are input into the modified outlet resistance calculation model to determine the outlet resistance output by the modified outlet resistance calculation model; wherein, the outlet resistance represents the pressure loss generated when air is discharged from the outlet of the indirect air-cooled tower.

2. The method according to claim 1, characterized in that, The air outlet resistance calculation model includes an air outlet resistance coefficient calculation unit and an air outlet resistance calculation unit. Based on the ratio of the ambient wind speed and the oncoming wind speed, the pre-constructed outlet resistance calculation model for the indirect air-cooled tower is modified, including: The target correction factor is calculated based on the ratio of the ambient wind speed to the oncoming wind speed. Based on the ratio of the ambient wind speed and the oncoming wind speed and the target correction factor, the air outlet resistance coefficient calculation unit included in the air outlet resistance calculation model is corrected.

3. The method according to claim 2, characterized in that, The outlet resistance coefficient calculation unit uses a preset polynomial function to calculate the resistance coefficient of the indirect air-cooled tower outlet. Based on the ratio of the ambient wind speed and the oncoming wind speed, and the target correction factor, the outlet resistance coefficient calculation unit included in the outlet resistance calculation model is corrected, including: Replace the independent variable of the preset polynomial function with the ratio of the ambient wind speed and the oncoming wind speed; Based on the target correction factor, at least one coefficient in the preset polynomial function corresponding to the air outlet resistance coefficient calculation unit is corrected.

4. The method according to claim 1, characterized in that, The modified outlet resistance calculation model includes an outlet resistance calculation unit and a modified outlet resistance coefficient calculation unit. The real-time ambient wind speed and the real-time oncoming wind speed are input into the corrected outlet resistance calculation model, including: The real-time ambient wind speed and the real-time oncoming wind speed are input into the corrected outlet resistance coefficient calculation unit to determine the outlet resistance coefficient output by the corrected outlet resistance coefficient calculation unit. The real-time air density at the inlet of the indirect air-cooled tower is obtained, and the real-time oncoming wind speed, the outlet resistance coefficient, and the real-time air density are input into the outlet resistance calculation unit.

5. The method according to claim 4, characterized in that, Determining the outlet resistance output by the modified outlet resistance calculation model includes: Based on the outlet resistance calculation unit, the real-time air density, the outlet resistance coefficient, and the real-time oncoming wind speed are processed; Determine the outlet resistance output by the outlet resistance calculation unit; wherein, the outlet resistance = 1 / 2 × real-time air density × outlet resistance coefficient × square of real-time oncoming wind speed.

6. The method according to any one of claims 1 to 5, characterized in that, Before obtaining the ambient wind speed in the area where the indirect air-cooled tower is located, the method further includes: In response to the mechanical ventilation convection simulation operation for the indirect air-cooled tower, a preset computational fluid dynamics method is used to numerically simulate the mechanical ventilation convection process of the indirect air-cooled tower and determine the numerical simulation results; wherein, the mechanical ventilation convection simulation operation is used to simulate the air flow and heat exchange process inside the indirect air-cooled tower. Based on the numerical simulation results, a calculation model for the outlet resistance of the indirect air-cooled tower is constructed.

7. The method according to claim 6, characterized in that, Based on the numerical simulation results, a calculation model for the outlet resistance of the indirect air-cooled tower is constructed, including: Based on the numerical simulation results, the simulated values ​​of the inlet face wind speed and outlet resistance coefficient of the indirect air-cooled tower are extracted. Curve fitting is performed on the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet drag coefficient to establish a functional relationship between the simulated values ​​of the inlet face wind speed and the simulated values ​​of the outlet drag coefficient; wherein the functional relationship is in polynomial form. Obtain the preset calculation expression corresponding to the air outlet resistance of the indirect air-cooled tower; An outlet resistance coefficient calculation unit is generated based on the aforementioned functional relationship, and an outlet resistance calculation unit is generated based on the aforementioned preset calculation expression; based on the outlet resistance coefficient calculation unit and the outlet resistance calculation unit, an outlet resistance calculation model for the indirect air-cooled tower is constructed.

8. A device for calculating and optimizing the outlet resistance of an indirect air-cooled tower, characterized in that, include: The first processing module is used to obtain the ambient wind speed of the area where the indirect air-cooled tower is located at a preset historical time, and to calculate the oncoming wind speed at the air inlet of the indirect air-cooled tower; wherein, the oncoming wind speed represents the average flow velocity of air flowing through the air inlet of the indirect air-cooled tower. The correction module is used to correct the pre-constructed outlet resistance calculation model for the indirect air-cooled tower based on the ratio of the ambient wind speed and the oncoming wind speed. The first processing module is also used to obtain the real-time ambient wind speed of the area where the indirect air-cooled tower is located, and to calculate the real-time oncoming wind speed at the air inlet of the indirect air-cooled tower. The second processing module is used to input the real-time ambient wind speed and the real-time oncoming wind speed into the modified outlet resistance calculation model, and determine the outlet resistance output by the modified outlet resistance calculation model; wherein, the outlet resistance represents the pressure loss generated when air is discharged from the outlet of the indirect air-cooled tower.

9. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes the computer execution instructions stored in the memory to implement the method for calculating and optimizing the outlet resistance of the indirect air-cooled tower as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method for calculating and optimizing the outlet resistance of an indirect air-cooled tower as described in any one of claims 1 to 7.

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