Method for analyzing on-way temperature distribution in snakelike heat exchange tube based on numerical simulation

Abstract

The invention discloses a numerical simulation-based on-way temperature distribution analysis method in a snakelike heat exchange tube, which relates to the technical field of heat energy engineering and comprises the following steps of: establishing a three-dimensional model according to structural parameters of a heat exchanger, and discretizing the three-dimensional model; a heat exchanger assembly temperature field is defined through a parameterization method, and preliminary simulation analysis is conducted in the simulation platform; and optimizing the heat exchanger assembly temperature field based on the simulation result to obtain temperature field data. According to the method, the snakelike heat exchange tube is divided into a plurality of units, and the continuous temperature distribution model is established, so that the direct heat exchange process of the fused salt and the snakelike heat exchange tube is effectively simulated; by simplifying the calculation process, the method can be suitable for the coiled pipe with a small pipe diameter; through iterative calculation, the reliability of a simulation result is improved; the temperature distribution of the working medium in the snake-shaped heat exchange pipe, the gasification position in the pipe and the thermal load of the pipe wall are obtained through simulation, and the conditions of fused salt freezing blockage and the like are avoided.

Description

Technical Field

[0001] The present invention relates to the field of thermal energy engineering technology, and in particular to a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation. Background Art

[0002] With the rapid development of renewable energy, energy storage technology plays an increasingly important role in grid peak regulation and energy management. Molten salt thermal storage technology, due to its high energy density, excellent thermal stability, and environmental friendliness, has been widely used in this field. As the core heat exchange component in molten salt thermal storage systems, the temperature distribution of serpentine heat exchange tubes directly affects the efficiency and safety of the system. Therefore, accurately analyzing and predicting the temperature distribution within these tubes is crucial for optimizing the design and operation of molten salt thermal storage systems.

[0003] At present, the analysis methods for temperature distribution in serpentine heat exchange tubes mainly include experimental research and numerical simulation. Experimental research can directly obtain temperature distribution data in the tubes, but it has disadvantages such as high cost, long cycle, and poor safety. Numerical simulation methods can overcome the limitations of experimental research, but most of the existing simulation methods are based on traditional boiling heat transfer and phase change models, which are difficult to accurately describe the complex heat exchange process in serpentine heat exchange tubes, especially when the tube diameter is small. In addition, existing simulation methods often consider the molten salt heat storage process and the heat exchange process separately, ignoring the interaction between the two, resulting in deviations between the simulation results and the actual situation. Summary of the Invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: the existing temperature distribution analysis method of the molten salt heat storage and heat exchange module cannot effectively simulate the direct heat exchange process between the molten salt and the serpentine heat exchange tube, cannot be applied to serpentine tubes with smaller diameters, cannot obtain the temperature distribution of the working fluid in the serpentine heat exchange tube and the heat load of the tube wall, and how to improve the accuracy of the simulation results.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a method for analyzing the temperature distribution along the inner surface of a serpentine heat exchange tube based on numerical simulation, comprising establishing a three-dimensional model according to the structural parameters of the heat exchanger and discretizing the three-dimensional model; defining the temperature field of the heat exchanger component through a parameterized method and performing preliminary simulation analysis in a simulation platform; and optimizing the temperature field of the heat exchanger component based on the simulation results to obtain temperature field data.

[0007] As a preferred solution of the method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation described in the present invention, the establishment of a three-dimensional model based on the structural parameters of the heat exchanger includes constructing a three-dimensional model based on the structural parameters using three-dimensional modeling software.

[0008] As a preferred solution of the method for analyzing temperature distribution along the serpentine heat exchange tube based on numerical simulation described in the present invention, the discretization of the three-dimensional model includes meshing the three-dimensional model.

[0009] As a preferred solution of the method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation described in the present invention, the setting of the temperature field of the heat exchanger component by a parameterized method includes defining the continuous temperature distribution of the heat exchanger component by a parameterized method.

[0010] As a preferred solution of the method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation described in the present invention, the preliminary simulation analysis performed in the simulation platform includes loading the temperature field data of the heat exchanger component into the numerical simulation software for initial simulation.

[0011] As a preferred solution of the method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation described in the present invention, the optimization of the temperature field of the heat exchanger component based on the simulation results includes calculating the temperature change in the temperature field according to the data in the simulation results.

[0012] As a preferred solution of the method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation described in the present invention, the optimization of the temperature field of the heat exchanger component based on the simulation results also includes updating the temperature field of the heat exchanger component based on the temperature change until the error between the set temperature and the simulated temperature is less than the set value, the iteration ends, and the optimization is completed.

[0013] Another object of the present invention is to provide a temperature distribution analysis system along the serpentine heat exchange tube based on numerical simulation. By dividing the serpentine heat exchange tube into multiple units and establishing a continuous temperature distribution model, the system solves the technical problem that the current temperature distribution analysis method of the molten salt heat storage and heat exchange module cannot effectively simulate the working medium temperature distribution and tube wall heat load in the serpentine heat exchange tube.

[0014] As a preferred solution of the temperature distribution analysis system along the serpentine heat exchange tube based on numerical simulation described in the present invention, it includes: a construction module, a definition module, and an optimization module; the construction module is used to establish a three-dimensional model based on the structural parameters of the heat exchanger and discretize the three-dimensional model; the definition module is used to define the temperature field of the heat exchanger component through a parameterized method and perform preliminary simulation analysis in the simulation platform; the optimization module is used to optimize the temperature field of the heat exchanger component based on the simulation results and obtain temperature field data.

[0015] A computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation.

[0016] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation.

[0017] Beneficial effects of the present invention: The method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation provided by the present invention can more accurately simulate the heat exchange process between the molten salt and the serpentine heat exchange tube by dividing the serpentine heat exchange tube into multiple units and establishing a continuous temperature distribution model, thereby more realistically reflecting the actual operation conditions and effectively simulating the direct heat exchange process between the molten salt and the serpentine heat exchange tube; by simulating the heat exchange between the tube wall and the molten salt instead of the original process in which the working fluid in the tube transfers heat through the tube wall and then exchanges heat with the molten salt, the calculation process is simplified, making the present invention applicable to serpentine tubes with smaller diameters, and providing a reliable basis for the design and optimization of small serpentine heat exchange tubes; by accurately simulating The temperature distribution of the working medium in the serpentine heat exchange tube and the heat load of the tube wall are obtained, which provides an important reference for the thermal design and safety assessment of the heat exchanger; through iterative calculation, the temperature distribution model is continuously optimized to make the simulation results more consistent with the actual operating conditions, thereby improving the reliability of the simulation results; through simulation, the temperature distribution of the working medium in the serpentine heat exchange tube, the vaporization position in the tube and the heat load of the tube wall are obtained, thereby providing reliable guidance for the variable operating condition debugging and safe operation of the molten salt steam generator, avoiding the occurrence of molten salt freezing and blockage; compared with traditional experimental research methods, the present invention can reduce research costs, shorten research cycles and improve research efficiency by adopting numerical simulation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The overall flow chart of a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation is provided for the first embodiment of the present invention.

[0020] Figure 2 A tube-pass unit division diagram of a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation is provided in the first embodiment of the present invention.

[0021] Figure 3 A logical diagram of UDF tube wall temperature programming for a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation is provided in the first embodiment of the present invention.

[0022] Figure 4 A practical diagram of serpentine heat exchange provided in accordance with a second embodiment of the present invention, showing a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation.

[0023] Figure 5 A comparison result diagram of the set enthalpy value of the serpentine tube and the simulated enthalpy value of a method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation provided in the second embodiment of the present invention.

[0024] Figure 6 A cloud diagram of simulation results of a serpentine heat exchanger based on a numerical simulation method for analyzing temperature distribution along the serpentine heat exchange tube is provided as a second embodiment of the present invention.

[0025] Figure 7 This is an overall flow chart of a system for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation, provided as a third embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0027] Example 1, with reference to Figure 1-Figure 3 , which is an embodiment of the present invention, provides a method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation, comprising:

[0028] S1: Establish a three-dimensional model based on the structural parameters of the heat exchanger and discretize the three-dimensional model.

[0029] Furthermore, establishing the three-dimensional model according to the structural parameters of the heat exchanger includes constructing the three-dimensional model based on the structural parameters using three-dimensional modeling software.

[0030] The heat exchanger is a serpentine heat exchange tube; the structural parameters include tube diameter, number of tube passes, tube pass spacing and bend radius.

[0031] In the embodiment of the present application, the three-dimensional model is a 1:1 three-dimensional modeling of the actual size of the three-dimensional fluid domain of the serpentine tube heat exchanger based on the actual size.

[0032] It should be noted that in the embodiments of the present application, the numerical simulation method is used to obtain the continuous along-the-line temperature distribution of the working fluid in the serpentine heat exchange tube and the molten salt outside the tube, the vaporization position, the heat load of the tube wall and other along-the-line parameters. According to the structural characteristics of the serpentine heat exchanger with a small tube diameter, the calculation process is simplified, and it is assumed that the water temperature in the serpentine heat exchange tube and the superheated steam temperature are consistent with the tube wall temperature of the heat exchange tube; after simplification, the hot water fluid domain in the serpentine heat exchange unit is replaced by the solid domain of the heat exchange tube, and the along-the-line temperature distribution law of the steam and water in the tube is replaced by changing the tube wall temperature. The heat exchange between the tube wall and the molten salt is simulated to replace the entire process of the working fluid in the tube transferring heat through the tube wall and then exchanging heat with the molten salt.

[0033] It should also be noted that discretizing the three-dimensional model includes meshing the three-dimensional model.

[0034] In the embodiment of the present application, the three-dimensional model is meshed. Specifically, one tube pass of the serpentine heat exchange tube is divided into two units, such as Figure 2 As shown in the figure, the straight pipe section is a unit and the curved pipe section is a unit. The divided units are then sorted from the inlet to the outlet of the serpentine heat exchange tube and numbered in order from the inlet to the outlet. When dividing the units, the geometric size and position coordinates of each unit need to be determined based on the tube length, tube diameter and distance between tubes. After the division is completed, each unit is meshed to ensure the mesh continuity between units.

[0035] In an optional embodiment, local mesh encryption is also performed during mesh division. Specifically, a preliminary mesh model is obtained after preliminary mesh division of the three-dimensional model using numerical simulation software; based on comprehensive analysis, the area for local mesh encryption is determined, such as the wall of the serpentine heat exchange tube, the bend area, the gas-liquid two-phase flow area, etc.; the wall of the serpentine heat exchange tube is selected according to the characteristics of the encrypted area and the calculation requirements, such as mesh refinement, mesh deformation, adaptive mesh technology, etc.; encryption parameters are set in the numerical simulation software, such as the size of the encrypted area, the degree of encryption, etc., and the numerical simulation software is used to perform local mesh encryption on the encrypted area to generate an encrypted mesh model; the quality of the encrypted mesh is checked to ensure that the mesh meets the calculation requirements, and the encrypted mesh is used for numerical simulation and the simulation results are analyzed.

[0036] It should also be noted that, in an optional embodiment, the wall of the serpentine heat exchange tube has a temperature gradient due to direct contact between the tube wall and the molten salt, and local mesh encryption can more accurately capture the temperature distribution; the flow field and temperature field changes in the bend area are more complex, and local mesh encryption can improve the calculation accuracy; the flow field and temperature field in the gas-liquid two-phase flow area change dramatically, and local mesh encryption can facilitate more accurate simulation of the changes in the gas-liquid two-phase flow.

[0037] S2: Define the temperature field of the heat exchanger components through parameterization method and perform preliminary simulation analysis in the simulation platform.

[0038] Furthermore, setting the temperature field of the heat exchanger component by a parameterized method includes defining a continuous temperature distribution of the heat exchanger component by a parameterized method.

[0039] The parameterization methods include but are not limited to spline parameterization, polynomial parameterization, physical parameterization, etc.

[0040] The heat exchanger assembly includes a serpentine heat exchange tube wall; the temperature field includes a continuous temperature distribution.

[0041] In an embodiment of the present application, a continuous temperature distribution of a heat exchanger assembly is defined by a parametric method. Specifically, a continuous piecewise function is written with the outer point of the inlet of the serpentine heat exchange tube as the calculation starting point and the position coordinates along one side of the tube wall as the independent variable; the writing logic of the piecewise function includes determining the coordinate position of each unit in turn according to the tube length, tube diameter and tube spacing, and assigning an initial temperature value; the initial temperature value is determined according to the initial temperature of the inlet water, the gas content and the final superheated steam temperature; the temperature growth rate of the piecewise function is calculated based on the working fluid parameters.

[0042] It should be noted that in the embodiment of the present application, since the diameter of the serpentine heat exchange tube and the spacing between the tubes are known and remain unchanged, the following can be used: Figure 3 The calculation starting point shown is used to determine the continuous coordinate position of each divided unit in turn based on the tube length, tube diameter and tube spacing, thereby ensuring that the initial temperature assigned to the tube wall also maintains continuous change.

[0043] It should also be noted that, in the embodiments of the present application, the working fluid parameters include but are not limited to parameters such as inlet water temperature, inlet gas content, and inlet flow rate.

[0044] It should also be noted that the preliminary simulation analysis in the simulation platform includes loading the temperature field data of the heat exchanger components into the numerical simulation software for initial simulation.

[0045] In an embodiment of the present application, the system is loaded into a numerical simulation software for an initial simulation. Specifically, after determining the wall temperature of the serpentine heat exchange tube and programming logic, the initial temperature, gas content and final superheated steam temperature of the inlet water are set, and the temperature growth rate along the process of each unit piecewise function is set in the form of UDF, giving the tube wall a continuous temperature distribution, wherein the gas content is the ratio of the vaporized water flow rate in the serpentine heat exchange tube to the initial water volume; based on the wall temperature of the serpentine heat exchange tube assigned by UDF, the heat exchange rate between the molten salt and the wall of the serpentine heat exchange tube of each divided unit under the initial set temperature distribution is obtained through numerical simulation; based on the numerical simulation results, the heat exchange rate of each unit and the working fluid parameters of the water at the inlet are obtained, and the working fluid parameters include but are not limited to the inlet water temperature, the inlet gas content and the inlet flow rate.

[0046] S3: Optimize the temperature field of the heat exchanger components based on the simulation results to obtain temperature field data.

[0047] Furthermore, optimizing the temperature field of the heat exchanger component based on the simulation results includes calculating a temperature change in the temperature field according to data in the simulation results.

[0048] The temperature field data is the continuous temperature distribution data of the serpentine heat exchange tube wall.

[0049] In the embodiment of the present application, the continuous temperature distribution of the entire serpentine heat exchange tube is determined by introducing the enthalpy value in the tube. Since the inlet of the serpentine heat exchange tube is in a mixed state of steam and water, the evaporation process of all water needs to be completed after absorbing heat. During the evaporation process, the temperature in the tube is always maintained at the saturation temperature under the working pressure. Therefore, in the iterative process, the changes in temperature and heat exchange are not intuitive enough. The enthalpy value replaces the total heat contained in the steam and water in the tube. Even at the same saturation temperature, each gas content corresponds to an enthalpy value. Under a certain working pressure, the enthalpy value and the superheated steam temperature are in a one-to-one correspondence. Therefore, in the data processing process, by introducing the enthalpy value in the tube, the continuous temperature distribution of the serpentine heat exchange tube can be determined more intuitively. The formula for calculating the enthalpy value through the heat exchange is expressed as:

[0050] Q=m·(H out -H in )

[0051] Among them, Q represents the heat transfer, unit W, H out 、H in Respectively represent the outlet and inlet enthalpy values ​​of the heat exchange unit, unit is kJ / kg.

[0052] In an embodiment of the present application, the temperature variation in the temperature field is calculated. Specifically, based on the heat exchange amount of each unit and the working fluid parameters of the water at the inlet obtained from the numerical simulation results, the temperature variation of each unit is calculated, and the inlet and outlet temperatures of each unit are determined, thereby obtaining a continuous temperature distribution of the entire serpentine heat exchange tube after numerical simulation calculation.

[0053] In an optional embodiment, the temperature variation in the temperature field is calculated, and the temperature variation of each unit can also be calculated based on the heat exchange amount, working fluid mass flow rate and working fluid specific heat capacity in the simulation results.

[0054] It should also be noted that optimizing the temperature field of the heat exchanger component based on the simulation results also includes updating the temperature field of the heat exchanger component based on the temperature change until the error between the set temperature and the simulated temperature is less than the set value, the iteration ends, and the optimization is completed.

[0055] In an embodiment of the present application, the temperature field of the heat exchanger assembly is optimized based on the simulation results. Specifically, the tube wall temperature is redistributed according to the temperature change calculation results, and as an iterative process, the redistributed tube wall temperature is used as the initial temperature of the next iterative process, the temperature distribution is set, and the next iterative process is started until the error between the set temperature and the simulated temperature is less than 5%, and the vaporization position in the tube is reasonable. The iteration is then completed and the optimization is completed.

[0056] Example 2, reference Figure 4-Figure 6 , which is an embodiment of the present invention, provides a method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0057] First, this embodiment aims to verify the feasibility and effectiveness of a method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation. Figure 4 The full-scale 3D model is built at the actual size, where Figure 4It contains 4 heat exchange modules, each heat exchange module contains 1 serpentine tube, each serpentine tube contains 26 sub-tubes, and each tube is composed of straight tubes and curved tubes; each tube in the serpentine tube is divided into two units, straight tubes and curved tubes, and 1 serpentine tube has 52 units in total. The coordinate position of each unit is determined, and a continuous piecewise function is written to define the entire serpentine heat exchange tube. The initial continuously distributed tube wall temperature is loaded into the numerical simulation software Fluent using UDF, and numerical simulation calculations are performed to obtain the heat transfer of each unit, calculate the enthalpy change of each unit, and determine the temperature values ​​at both ends of each unit. The tube wall temperature is redistributed as an iterative process. The redistributed tube wall temperature is used as the initial temperature of the next iterative process, the temperature distribution is set, and the next iterative process is started. The iterative process is repeated until the error between the set serpentine heat exchange tube temperature distribution and the simulated temperature distribution is less than 5%, and the vaporization position in the tube is reasonable, as shown below. Figure 5 、 Figure 6 And the iterative simulation results of the heat exchange module are shown in Table 1.

[0058] Table 1 Heat exchanger simulation results parameters

[0059]

[0060] After several iterative calculations, the set enthalpy values ​​and simulated enthalpy values ​​of the four serpentine heat exchange tubes had an error within 5%. The set temperature distribution of the serpentine heat exchange tubes was determined to be the temperature distribution of the steam and water along the tubes in the actual process. The position of complete vaporization of the water in the tubes, the temperature distribution of the molten salt along the shell side, and the heat load of the tube wall can also be determined, thereby verifying the feasibility and effectiveness of the method of the present invention.

[0061] Example 3, reference Figure 7 , which is an embodiment of the present invention, provides a temperature distribution analysis system along the serpentine heat exchange tube based on numerical simulation, including a construction module, a definition module, and an optimization module.

[0062] The construction module is used to establish a three-dimensional model based on the structural parameters of the heat exchanger and discretize the three-dimensional model; the definition module is used to define the temperature field of the heat exchanger components through a parametric method and perform preliminary simulation analysis in the simulation platform; the optimization module is used to optimize the temperature field of the heat exchanger components based on the simulation results and obtain temperature field data.

[0063] If the function is implemented in the form of 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 the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program code.

[0064] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0065] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0066] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having logic gate circuits for implementing logical functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc. It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications should be encompassed by the claims of the present invention.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation, characterized in that: include: Establish a three-dimensional model based on the structural parameters of the heat exchanger and discretize the three-dimensional model; Define the temperature field of the heat exchanger components through parameterization method and conduct preliminary simulation analysis in the simulation platform; Based on the simulation results, the temperature field of the heat exchanger components is optimized to obtain temperature field data.

2. The method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to claim 1, characterized in that: The establishing of the three-dimensional model according to the structural parameters of the heat exchanger includes constructing the three-dimensional model by three-dimensional modeling software based on the structural parameters.

3. The method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to claim 2, characterized in that: The discretization of the three-dimensional model includes meshing the three-dimensional model.

4. The method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to claim 3, characterized in that: Setting the temperature field of the heat exchanger component by a parameterized method includes defining a continuous temperature distribution of the heat exchanger component by a parameterized method.

5. The method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to claim 4, characterized in that: The preliminary simulation analysis performed in the simulation platform includes loading the temperature field data of the heat exchanger component into the numerical simulation software for initial simulation.

6. The method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to claim 5, characterized in that: Optimizing the temperature field of the heat exchanger assembly based on the simulation results includes calculating the temperature variation in the temperature field according to data in the simulation results.

7. The method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to claim 6, characterized in that: The optimization of the temperature field of the heat exchanger component based on the simulation results further includes updating the temperature field of the heat exchanger component based on the temperature change until the error between the set temperature and the simulated temperature is less than the set value, and the iteration ends and the optimization is completed.

8. A system using the method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to any one of claims 1 to 7, characterized in that: Including building modules, defining modules, and optimizing modules; The construction module is used to establish a three-dimensional model according to the structural parameters of the heat exchanger and discretize the three-dimensional model; The definition module is used to define the temperature field of the heat exchanger component through a parameterized method and perform preliminary simulation analysis in the simulation platform; The optimization module is used to optimize the temperature field of the heat exchanger component based on the simulation results to obtain temperature field data.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for analyzing the temperature distribution along the serpentine heat exchange tube based on numerical simulation according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for analyzing temperature distribution along a serpentine heat exchange tube based on numerical simulation according to any one of claims 1 to 7 are implemented.

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