Temperature difference power generation module structure optimization design method and device

Abstract

The invention provides a thermoelectric power generation module structure optimization design method and device, and belongs to the field of thermoelectric power generation module structure optimization design. The method comprises the steps that the air flow rate and the natural gas flow rate injected into a gas conveying pipeline are obtained; total heat released in the combustion process is calculated based on the air flow rate and the natural gas flow rate, and the flue gas flow rate and the flue gas temperature of the thermoelectric power generation module are calculated based on the total heat; taking the flue gas flow velocity and the flue gas temperature as boundary conditions, and predicting the longitudinal temperature distribution situation of the thermoelectric power generation module; determining the material of the thermoelectric module according to the longitudinal temperature distribution situation; calculating the number of thermoelectric modules according to the longitudinal temperature distribution situation; determining boundary size information of the heat collector according to the total heat of the heat collector; and calculating geometric information of the plurality of rib columns by taking boundary size information as a size constraint and taking a flue gas flow rate and a flue gas temperature as environment boundaries. The structure of the thermoelectric power generation module can be comprehensively optimized, and the power generation efficiency and performance of the thermoelectric power generation module are improved.

Description

Technical Field

[0001] The present application relates to the technical field of optimized design of thermoelectric power generation module structures, and particularly relates to a method and device for optimizing the design of thermoelectric power generation module structures. Background Art

[0002] With the development of technology, the research and application of thermoelectric power generation technology have been continuously promoted. In actual application scenarios, such as a large amount of waste heat is generated during industrial production processes, and a large amount of waste heat is carried by the exhaust gas when an automobile engine is running. If this waste heat can be effectively utilized, it can not only improve the energy utilization efficiency but also reduce environmental pollution. As the core component for realizing thermoelectric power generation, the optimization of the performance and structure of the thermoelectric power generation module is crucial for improving the power generation efficiency. At present, the market demand for high-efficiency and stable thermoelectric power generation equipment is increasing continuously, which has promoted the research progress of the optimized design of thermoelectric power generation module structures.

[0003] The existing methods for optimizing the design of thermoelectric power generation module structures mainly adopt two methods. The first method is simulation, that is, a model of the thermoelectric power generation module structure is established through simulation, initial parameters are input into the model, and the simulation of the thermal energy-electric energy conversion process is carried out, and then the working conditions of the thermoelectric power generation module are simulated, and the structure of the thermoelectric power generation module is adjusted according to the working conditions; the second method is numerical calculation. Numerical calculation is to calculate and solve using numerical formulas according to the temperature conditions of the thermoelectric power generation module working after ignoring some variables that cause complex calculations, so as to obtain the design parameters of the internal structure of the thermoelectric power generation module.

[0004] However, there is a common problem in the above two methods, that is, the input variable for the structure design is the waste heat gas itself. Under this condition, whether it is simulation or numerical calculation, the existing technology needs to add a detection process of intermediate variables in the actual working environment to obtain the exhaust gas state after gas combustion. The initial conditions for the structure design are determined by means of detection, and there are many interference factors in the detection process, which easily lead to inaccurate detection results, and further reduce the accuracy of the structure design. Summary of the Invention

[0005] In view of this, the present application provides a method and device for optimizing the design of thermoelectric power generation module structures to achieve a fast and accurate optimization design method for thermoelectric power generation module structures.

[0006] Specifically, the present application is implemented through the following technical solutions:

[0007] The first aspect of the present application provides a method for optimizing the design of thermoelectric power generation module structures, and the method includes:

[0008] Obtain the air flow rate and natural gas flow rate of the injection gas delivery pipeline;

[0009] Calculate the total heat released during the combustion process based on the air flow rate and the natural gas flow rate, and calculate the flue gas flow rate and the flue gas temperature of the thermoelectric generation module based on the total heat;

[0010] Use the flue gas flow rate and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend from the hot end to the cold end of the thermoelectric generation module; wherein, use the flue gas temperature as the initial condition, and simulate the flow path of the flue gas according to the flue gas flow rate and the structural composition of the thermoelectric generation module;

[0011] Determine the material of the thermoelectric module according to the end point temperature value in the longitudinal temperature distribution trend;

[0012] Calculate the number of the thermoelectric modules according to the longitudinal temperature distribution trend;

[0013] Calculate the total heat collected by the collector according to the number and material of the thermoelectric modules, and determine the boundary dimension information of the collector according to the total heat;

[0014] Use the boundary dimension information as the dimension constraint, and use the flue gas flow rate and the flue gas temperature as the environmental boundary to calculate the geometric information of multiple rib columns.

[0015] The second aspect of the present application provides a device for optimizing the structure design of a thermoelectric generation module, and the device includes an acquisition module, a calculation module, a prediction module and a determination module;

[0016] Wherein, the acquisition module is used to acquire the air flow rate and the natural gas flow rate of the injection gas transmission pipeline;

[0017] The calculation module is used to calculate the total heat released during the combustion process based on the air flow rate and the natural gas flow rate, and calculate the flue gas flow rate and the flue gas temperature of the thermoelectric generation module based on the total heat;

[0018] The prediction module is used to use the flue gas flow rate and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend from the hot end to the cold end of the thermoelectric generation module; wherein, use the flue gas temperature as the initial condition, and simulate the flow path of the flue gas according to the flue gas flow rate and the structural composition of the thermoelectric generation module;

[0019] The determination module is used to determine the material of the thermoelectric module according to the end point temperature value in the longitudinal temperature distribution trend;

[0020] The calculation module is further used to calculate the number of the thermoelectric modules according to the longitudinal temperature distribution trend;

[0021] The determination module is further used to calculate the total heat collected by the collector according to the number and material of the thermoelectric modules, and determine the boundary dimension information of the collector according to the total heat;

[0022] The calculation module is further configured to use the boundary dimension information as a dimension constraint, and use the flue gas flow rate and the flue gas temperature as environmental boundaries to calculate the geometric information of a plurality of rib columns.

[0023] The method and device for optimizing the structure design of a thermoelectric generation module provided by the present application adopt a numerical method to optimize the structure design of the thermoelectric generation module. Based on the existing numerical calculation methods, the input conditions adopted by the design method provided by the present application are the air and natural gas flow rates before entering the burner, that is, before combustion. This information is the initial variable of combustion control, that is, controlled by the user and can be accurately and quickly obtained. On the basis of accurately obtaining the initial variables, the present application considers the pipelines for transporting air and natural gas, the burner, and the thermoelectric generation module as a whole, uses the gas flow rate as an intermediate variable, and through numerical analysis of the transportation and combustion processes, predicts the waste heat gas that can be obtained based on the initial variables, and accurately designs the corresponding thermoelectric generation module structure according to the predicted results. That is to say, for the design method provided by the present invention, the input variables are the air and natural gas flow rates input before combustion, and the output variables are the structure parameters of the thermoelectric generation module. The core lies in directly deriving the types and mass flow rates of combustion products from the input flow rate through numerical modeling of combustion chemical reactions without relying on actual detection of intermediate variables. Specifically, based on the chemical equation of complete combustion of methane, combined with the air component ratio (oxygen accounts for 21% and nitrogen accounts for 79%) and the excess air coefficient, the mass flow rates of carbon dioxide, water vapor, remaining oxygen, and nitrogen can be theoretically calculated, and then the flue gas flow rate and temperature can be obtained. Using the numerical calculation method can greatly reduce the computational workload of simulation and simplify the process of structure optimization design. At the same time, the preposition of the initial variables enables the present application to design the structure of the thermoelectric generation module with more accurate input parameters, improving the accuracy of the design. Description of the Drawings

[0024] Figure 1 It is a flowchart of the first embodiment of the method for optimizing the structure design of a thermoelectric generation module provided by the present application;

[0025] Figure 2 It is a structural diagram of the thermoelectric generation module shown by the present application;

[0026] Figure 3 It is a schematic structural diagram of the second embodiment of the device for optimizing the structure design of a thermoelectric generation module provided by the present application; Description of the Reference Numerals: 1: Gas inlet; 2: Burner; 3: Thermoelectric module; 4: Collector; 5: Water-cooled heat exchanger; 6: Clamping plate. Detailed Embodiments

[0027] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0028] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "the", and "said" used in this application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to a determination".

[0030] Specific embodiments are given below to introduce the technical solutions of the present application in detail.

[0031] Embodiment 1:

[0032] Figure 1 It is a flowchart of Embodiment 1 of the method for optimizing the design of the thermoelectric power generation module structure provided by the present application. Please refer to Figure 1 , the method provided in this embodiment may include:

[0033] S101. Obtain the air flow rate and natural gas flow rate of the injection gas pipeline.

[0034] The thermoelectric power generation module includes a gas pipeline. One end of the gas pipeline is a gas inlet 1, and the other end is connected to a burner 2. The burner 2 is provided with a waste heat gas outlet, and the waste heat gas outlet is connected to the thermoelectric power generation module; the thermoelectric power generation module is provided with a plurality of thermoelectric modules 3 stacked on each other, and a collector 4 is provided below the thermoelectric modules. A plurality of rib columns are distributed in rows and columns on the surface of the collector.

[0035] Figure 2 It is a structural diagram of the thermoelectric power generation module shown in the present application. Please refer to Figure 2It should be noted that the thermoelectric power generation module is a device that uses temperature difference to generate electrical energy. The basic principle is based on the Seebeck effect, that is, two different conductors or semiconductors form a loop. When the temperatures of the two contact points are different, an electromotive force will be generated in the loop, thereby generating current. In this application, it generates electricity by receiving the waste heat gas discharged from the burner and using the temperature difference between the hot end (the end with a relatively high working environment temperature) and the cold end (the end with a relatively low working environment). Thermoelectric module is the core component of the thermoelectric power generation module, generally made of thermoelectric materials, which can directly convert thermal energy into electrical energy. When there is a temperature difference between the two ends of the thermoelectric module, electrons will diffuse from the high temperature end to the low temperature end, thereby forming a current in the circuit. Multiple thermoelectric modules stacked on each other can increase the efficiency and amount of power generation.

[0036] It should be noted that the collector 4 is usually located below the stacked thermoelectric module 3, and is used to collect the heat of the waste heat gas discharged by the burner, increase the temperature of the hot end of the thermoelectric module, and enhance the temperature difference power generation effect. Its surface is distributed with multiple ribs in rows and columns, the purpose is to increase the contact area with the waste heat gas and absorb heat more efficiently. Among them, the larger the surface area of ​​the rib column, the wider the contact range with the waste heat gas, and the more heat can be absorbed, thereby improving the heat collection efficiency of the collector, and ultimately improving the power generation capacity of the thermoelectric power generation module.

[0037] It should also be noted that the thermoelectric power generation module also includes a water-cooled heat exchanger 5 and a clamping plate 6, wherein the water-cooled heat exchanger 5 absorbs heat through circulating water to reduce the temperature of the thermoelectric power generation module and ensure its stable operation within a suitable operating temperature range. The thermoelectric power generation module includes a plurality of mutually stacked thermoelectric modules 3, a collector 4 below, and ribs on the surface and many other components. During actual operation, these components may be displaced or loosened due to factors such as vibration, thermal expansion and contraction, affecting the structural stability and performance of the thermoelectric power generation module. The clamping plate can tightly fix the various components together and provide a clamping force to ensure that the above components are tightly connected.

[0038] Specifically, the air flow rate and natural gas flow rate can be measured by installing a flow rate sensor at the inlet of the gas transmission pipeline. There are many types of flow rate sensors, such as sensors based on the ultrasonic principle, which calculate the flow rate by measuring the propagation time difference of ultrasonic waves in the airflow; or sensors based on the thermal principle, which use the characteristic of gas flow taking away heat to measure the flow rate, etc. As another optional embodiment, a combustion control program can also be obtained, and the air flow rate and natural gas flow rate can be determined based on the control flow rate in the program.

[0039] S102, calculating the total heat released during the combustion process based on the air flow rate and the natural gas flow rate, and calculating the flue gas flow rate and flue gas temperature of the thermoelectric power generation module based on the total heat.

[0040] It should be noted that the main component of natural gas is methane (CH4), which undergoes a combustion reaction with oxygen in the air, and the chemical equation is . According to the air flow rate, the amount of oxygen participating in the reaction can be determined. Combining with the natural gas flow rate, the amount of methane can be known. Based on the stoichiometric ratio relationship of chemical reactions, the amounts of flue gas components such as carbon dioxide and water vapor generated after combustion can be calculated. As an optional embodiment, oxygen in the air accounts for about 21% by volume fraction, so there is a multiple relationship between the actual air requirement and the theoretical value. After combustion generates residual substances, the flue gas will carry out the heat generated by combustion, and then transfer it to the thermoelectric generation module to convert thermal energy into electrical energy.

[0041] Specifically, based on the air flow rate and the natural gas flow rate, calculate the total heat released during the combustion process, and based on the total heat, calculate the flue gas flow rate and flue gas temperature of the thermoelectric generation module, including:

[0042] (1) Calculate the total mass flow rate of the combustion gas after mixing the air flow rate and the natural gas flow rate.

[0043] It should be noted that calculating the total mass flow rate of the combustion gas after mixing the air flow rate and the natural gas flow rate includes:

[0044] (i) Determine multiple products after combustion according to the combustion gas after mixing.

[0045] It should be noted that natural gas (the main component is methane) burns with air (the main components are nitrogen and oxygen) in the burner. When the combustion temperature is different, the degree of complete combustion may be different. Generally, the products of complete combustion are carbon dioxide, water, nitrogen in the air that does not participate in the reaction, and oxygen remaining if the air is in excess.

[0046] (ii) Calculate the mass flow rate of each product.

[0047] Specifically, assume that the flow rate of natural gas is (L / s), and the actual air flow rate is (L / s). Determine the molar mass (g / mol) of each product, and calculate the mass flow rate based on the product of the molar mass and the corresponding molar flow rate. Among them, the molar mass is determined according to the product type. For each product, the molar mass of carbon dioxide is 44 g / mol, the molar mass of water is 18 g / mol, the molar mass of oxygen is 32 g / mol, and the molar mass of nitrogen is 28 g / mol.

[0048] Furthermore, the natural gas flow rate and air flow rate are converted into corresponding molar flow rates. Since the input natural gas flow rate and air flow rate are volume flow rates, the conversion reference quantity under standard conditions is 22.4L / mol. The oxygen content in the air is 21%, so the molar flow rate is the ratio of the volume flow rate to 22.4. Therefore, we have: , where the molar flow rate is in mol / s. Based on this, since according to the chemical equation, 1 mol of methane requires 2 mol of oxygen for complete combustion, the molar flow rate of the remaining oxygen is calculated as , where 0.21 is the proportion of oxygen in the air, 2 is the multiple relationship between oxygen and methane in the chemical relationship, and 22.4 is the conversion between volume flow and molar flow under standard conditions; the excess air coefficient is determined by the ratio of the molar flow of natural gas to the molar flow of oxygen in the air. .

[0049] Calculate the molar flow of each product. From the chemical formula, we know that the molar flow of carbon dioxide is equal to the molar flow of methane. , the molar flow rate of water is equal to twice the molar flow rate of methane The molar flow rate of nitrogen is the product of the molar flow rate of air and the proportion of unreacted nitrogen in the air. , of which oxygen accounts for 21% and nitrogen accounts for approximately 79%.

[0050] The product of the molar flow rate and the molar mass is determined as the mass flow rate (g / s). The molar flow rates of the remaining oxygen, carbon dioxide, water, and nitrogen calculated according to the above steps are multiplied by their corresponding molar mass products to obtain the mass flow rate: , , and .

[0051] (iii) Calculate the total mass flow rate based on the mass flow rates of the individual products.

[0052] Add the mass flow rates of the above products to obtain the total mass flow rate of the mixed combustion gas (g / s):

[0053] .

[0054] (2) Calculate the total heat released by the combustion of the natural gas based on the product of the natural gas flow rate and the standard combustion enthalpy change.

[0055] It should be noted that, combined with the above chemical equation, under standard conditions, each mole of methane will release a certain amount of heat when it is completely burned, which is called the standard combustion enthalpy change. (kJ / mol).

[0056] Calculate the molar flow rate of natural gas based on the natural gas flow rate, and calculate the molar flow rate of carbon dioxide based on the molar flow rate of natural gas and the chemical reaction equation of natural gas combustion. Referring to the molar flow rate of carbon dioxide described in step (1), the molar flow rate of carbon dioxide is equal to the molar flow rate of methane , and the calculation process has been derived above and will not be elaborated here.

[0057] Calculate the product of the molar flow rate of carbon dioxide and the standard enthalpy change of combustion to obtain the total heat (unit: kJ / s).

[0058] Specifically, when implemented, the standard enthalpy change of combustion of methane is known (generating water vapor), then the total heat released by natural gas combustion per unit time .

[0059] (3) Calculate the temperature change value based on the ratio of the total heat to the product of the total mass flow rate and the mixed specific heat capacity.

[0060] It should be noted that before calculating the temperature change value based on the ratio of the total heat to the product of the total mass flow rate and the mixed specific heat capacity, the method further includes:

[0061] (i) Determine the specific heat capacity weights of each product based on the excess air degree of the burner.

[0062] It should be noted that the weight of the specific heat capacity is generally determined only by the excess air coefficient. Among them, the specific heat capacity of different products is affected by the excess air degree of the burner. The excess air degree changes the proportion of each component in the combustion products, and thus affects the proportion of each product in the mixed gas.

[0063] Furthermore, it is known that at the combustion temperature that the burner needs to reach, the specific heat capacities (KJ / (kg·K)) of each component are 1.0 for carbon dioxide, 1.8 for water, 0.9 for oxygen, and 0.75 for nitrogen. According to the excess air coefficient, the excess oxygen amount can be determined, and then the mass flow rates of the remaining products can be determined. According to the natural gas flow rate or air flow rate coefficient in the mass flow rate, the specific heat capacity weights of each product can be calculated. Since different excess air degrees will cause changes in the mole fraction of each product, the corresponding specific heat capacity weights under different combustion conditions (affected by the excess air degree) are also different.

[0064] (ii) Calculate the weighted sum of the specific heat capacities of each product based on the specific heat capacity weights to obtain the mixed specific heat capacity.

[0065] Specifically, the mixed specific heat capacity (KJ / (kg·K)) is as follows:

[0066] .

[0067] Based on the calculated mixed specific heat capacity, calculate the temperature change value (K):

[0068] ;

[0069] where is the total heat released by the combustion of natural gas, calculated in step (2), with the unit of KJ / s, is the total mass flow rate, calculated in step (1), with the unit of g / s, is the mixed specific heat capacity, with the unit of KJ / (kg·K).

[0070] Specifically, combining the previous calculation results, the numerical calculation formula can be obtained:

[0071] .

[0072] where is the flow rate of natural gas, is the flow rate of air.

[0073] (4) Calculate the flue gas temperature based on the sum of the temperature change value and the initial temperature value.

[0074] Assume the initial temperature is 298K, then the flue gas temperature is .

[0075] As can be seen from the above, for the flue gas temperature calculation method provided by the present invention, during the calculation process, according to the modeling process of the combustion process mechanism model, the excess air coefficient is determined by the input natural gas flow rate and air flow rate. Under the conditions of a certain gas molar mass, a certain proportion of oxygen content in the air, and a certain chemical reaction formula, the mass flow rates of each product (carbon dioxide, residual oxygen, water, nitrogen) are only affected by the input natural gas flow rate and air flow rate, and other calculated quantities are determined. Thus, it can be known that the coefficients of the natural gas flow rate and air flow rate in the mass flow rate are also determined. Therefore, the value of the mixed specific heat capacity is also determined. From this, it can be known that the denominator of the temperature change value (the product of the total mass flow rate and the mixed specific heat capacity) is only affected by the input natural gas flow rate and air flow rate, and other variables can obtain numerical values according to the derivation process. Further, the conversion quantity (22.4) from volume flow rate to molar flow rate is constant, and the standard combustion enthalpy change is also constant. On this basis, the product of the molar flow rate and the standard combustion enthalpy change is only affected by the input natural gas flow rate and air flow rate. Thus, it can be known that the numerator of the temperature change value calculation formula is also only affected by the input natural gas flow rate and air flow rate, and other variables can obtain numerical values according to the derivation process. In summary, for the method provided by the present invention, only the input natural gas flow rate and air flow rate need to be obtained, and the corresponding temperature change value can be calculated according to the above numerical relationship without repeating the derivation of the intermediate process.

[0076] It should also be noted that after obtaining the flue gas temperature, the method provided by the present invention further includes calculating the flue gas velocity. Specifically, the natural gas flow rate and air flow rate are converted into corresponding molar flow rates, and the molar flow rate of residual oxygen and the molar flow rates of other products are calculated according to the molar flow rates; the mass flow rates of each product are calculated by using the product of the molar flow rate of the residual oxygen and the molar flow rates of other products and the molar mass of the corresponding substances; the total mass flow rate is calculated according to the sum of the mass flow rates of all products. The calculation process is the same as that of calculating the flue gas temperature and will not be elaborated here. Further, the intake density is calculated according to the natural gas flow rate and air flow rate; the flue gas density is calculated according to the correlation between the intake density and the flue gas density. Specifically, , with the unit of kg / m 3 ; at high temperature: , with the unit still being kg / m 3 .

[0077] Finally, the flue gas velocity is calculated as the ratio of the total mass flow rate to the product of the flue gas density and the cross-sectional area of the pipeline.

[0078] ;

[0079] where A is the cross-sectional area of the pipeline, with the unit of m 2 ; is the total volume flow rate of the combustion gas after mixing, is the flow velocity formula, m total is the total mass flow rate, with the unit of g / s, is the flue gas density, with the unit of kg / m 3 , from which it can be seen that the flue gas flow velocity is also only related to the natural gas flow rate and the air flow rate.

[0080] S103. Take the flue gas flow velocity and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend from the hot end to the cold end of the thermoelectric generation module; among them, take the flue gas temperature as the initial condition, and simulate the flow path of the flue gas according to the flue gas flow velocity and the structural composition of the thermoelectric generation module.

[0081] It should be noted that the longitudinal temperature distribution trend refers to the change of temperature with position in the longitudinal direction from the hot end to the cold end of the thermoelectric generation module. Among them, the hot end of the thermoelectric generation module refers to the end that receives heat in the thermoelectric generation module, usually in contact with a high-temperature heat source (such as flue gas generated by combustion), and has a higher temperature; the cold end of the thermoelectric generation module refers to the end that releases heat in the thermoelectric generation module, generally in contact with a low-temperature environment or a heat dissipation device, and has a relatively low temperature.

[0082] Specifically, taking the flue gas flow velocity and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend of the thermoelectric generation module includes:

[0083] (1) Establish a spatial model with the same size as the thermoelectric generation module.

[0084] It should be noted that the spatial model is only an empty shell model that is exactly the same as the external dimensions (length, width, and height) of the thermoelectric generation module. No specific structures such as thermoelectric modules and collectors are set inside, and it is only used to simulate the flow and heat transfer process of the flue gas in a fixed space. Its core function is: on the premise of knowing the maximum geometric size of the module, by inputting the flue gas flow velocity and temperature boundary conditions, predict the basic temperature distribution trend without internal structures, and provide initial thermal field data for the layout of subsequent components such as thermoelectric modules and collectors.

[0085] Specifically, the method for constructing the spatial model is as follows: Use numerical simulation software (such as the Geometry module of ANSYS Workbench software) to draw a three-dimensional hollow shell model with dimensions consistent with the maximum outer dimensions of the thermoelectric power generation module. The spatial model only includes the gas flow space (i.e., the area where the thermoelectric module and the collector will be installed in the future) and does not contain any internal components. In the Fluent module of ANSYS Workbench software, set the model inlet as the velocity inlet boundary condition (flue gas flow rate), the outlet as the pressure outlet, and the shell wall as the adiabatic boundary. By solving the continuity equation, momentum equation, and energy equation, simulate the temperature distribution trend caused by the flue gas flow.

[0086] (2) Use the flue gas flow rate and the flue gas temperature as the inputs of the spatial model, and simulate and calculate the longitudinal temperature distribution trend of the spatial model. The temperature distribution trend is the temperature distribution when the rib columns are not designed in the thermoelectric power generation module.

[0087] It should be noted that the simulation calculation can be carried out by using the basic principles of heat transfer and fluid mechanics. Among them, the flue gas flow rate affects the convective heat transfer intensity between the flue gas and the spatial model. The faster the flow rate, the stronger the convective heat transfer. The flue gas temperature is the driving force for heat transfer. The higher the temperature, the more heat is transferred to the spatial model. By inputting these boundary conditions into the spatial model and combining the thermal physical properties of the material (such as thermal conductivity, specific heat capacity, etc.), use numerical calculation methods (such as finite element method, finite volume method, etc.) to solve the control equations of heat transfer and fluid flow, so as to obtain the temperature distribution inside the module. Among them, the temperature distribution trend is the temperature distribution when the rib columns are not designed in the thermoelectric power generation module, only considering the temperature distribution during the flow and heat transfer process of the flue gas in the spatial model. At this time, the inside of the spatial model only includes the gas flow space and does not involve the influence of the rib column structure on the flue gas flow and heat transfer. The purpose is to obtain the basic temperature distribution data to provide a reference for the subsequent design of the rib column structure in this space. Because the presence of rib columns will change the flow path of the flue gas, increase the contact area between the flue gas and the module, and thus affect the heat transfer efficiency and temperature distribution. In the simulation without rib column design, the temperature change law inside the thermoelectric power generation module can be more clearly understood under the simple flue gas flow and spatial boundary conditions, which helps to analyze the influence of rib column design on the overall performance in the future. For example, by comparing the temperature distribution before and after setting different parameters of rib columns, the optimization effect of the shape, size, layout, etc. of the rib columns on the temperature field of the thermoelectric power generation module can be evaluated, providing strong data support for the geometric information design of the rib columns. Specifically, for the operation of inputting boundary conditions into the spatial model to predict the longitudinal temperature distribution trend of the thermoelectric power generation module, please refer to the description of related technologies and will not be elaborated here.

[0088] It should also be noted that the core function of the spatial model is to obtain the basic thermal field distribution without internal structure. In subsequent designs, components such as thermoelectric modules and collectors need to be integrated into this space, and the component parameters are optimized through iterative simulations to make the final temperature distribution meet the power generation efficiency requirements. For example, if the simulation of the empty shell model shows uneven temperature distribution at the hot end, the density of the collector rib columns can be increased or the arrangement of the thermoelectric modules can be adjusted, and the simulation of the model with structure can be carried out again until the temperature distribution uniformity meets the standard.

[0089] S104. Determine the material of the thermoelectric module according to the end point temperature values in the longitudinal temperature distribution trend.

[0090] It should be noted that in the longitudinal temperature distribution trend, the maximum temperature value usually appears at the hot end, where it contacts the high-temperature flue gas and receives a large amount of heat; the minimum temperature value generally appears at the cold end, contacting the low-temperature environment or the heat dissipation device.

[0091] Different thermoelectric materials have different thermoelectric properties and applicable temperature ranges. The performance of thermoelectric materials is usually measured by the thermoelectric figure of merit. In different temperature ranges, the thermoelectric figures of merit of various thermoelectric materials are different. Selecting materials with a higher thermoelectric figure of merit in the temperature range corresponding to the end point temperature values can improve the power generation efficiency of the thermoelectric module. Specifically, from the longitudinal temperature distribution trend predicted previously, extract the maximum temperature value and the minimum temperature value, and select the thermoelectric material according to the two end point temperature values. As an optional embodiment, the working temperature of the thermoelectric material corresponding to the thermoelectric module needs to exceed the maximum temperature value and the minimum temperature value, that is, the working temperature range should be greater than the temperature range included by the maximum temperature value and the minimum temperature value. In this process, if the temperature range spans the applicable intervals of different materials, it may be necessary to use a multi-stage thermoelectric module, that is, different thermoelectric materials are used in different temperature ranges to give full play to the advantages of various materials. Specifically, determine the first-layer material according to the minimum temperature value, divide the temperature range according to the working temperature of the first-layer material, determine the maximum temperature point corresponding to the first-layer material, complete the interval division of the first-layer material, use the maximum temperature point corresponding to the first-layer material as the new minimum temperature value, and return to the step of determining the material according to the minimum temperature value.

[0092] S105. Calculate the number of the thermoelectric modules according to the longitudinal temperature distribution trend.

[0093] It should be noted that calculating the number of the thermoelectric modules according to the longitudinal temperature distribution trend includes:

[0094] (1)Calculate the distribution curve of the temperature change rate according to the longitudinal temperature distribution trend. The abscissa of the distribution curve is the coordinate value of the position corresponding to the temperature change rate in the direction of the thermoelectric power generation module, and the direction of the thermoelectric power generation module is the direction from the cold end to the hot end of the thermoelectric power generation module. The ordinate of the distribution curve is the temperature change rate corresponding to the coordinate value.

[0095] It should be noted that the temperature change rate reflects the speed of temperature change with position. The temperature change rate can be obtained by taking the derivative of the longitudinal temperature distribution trend. By calculating the distribution curve of the temperature change rate, the characteristics of the temperature change inside the module can be understood more carefully. Specifically, from the previously predicted longitudinal temperature distribution trend, obtain the temperature values at each position in the direction from the cold end to the hot end of the thermoelectric power generation module, and use numerical differentiation methods (such as the finite difference method) to calculate the temperature change rate. For discrete temperature data points, the temperature change rate can be approximately calculated by dividing the temperature difference between two adjacent points by the distance between the two points. Taking the coordinate value of the position corresponding to the temperature change rate in the direction of the thermoelectric power generation module as the abscissa and the temperature change rate corresponding to the coordinate value as the ordinate, draw the distribution curve of the temperature change rate.

[0096] (2)Perform regional segmentation on the direction of the thermoelectric power generation module according to the amplitude change rate of the distribution curve to obtain multiple partitions of the thermoelectric power generation module.

[0097] It should be noted that the amplitude change rate of the distribution curve reflects the change of the temperature change rate. When the amplitude change rate is large, it indicates that the temperature change rate has changed significantly in this area, meaning that the heat transfer characteristics or working state inside the module may have changed. By analyzing the amplitude change rate of the distribution curve, the thermoelectric power generation module can be divided into different regions, and each region has relatively consistent temperature change characteristics.

[0098] Specifically, take the derivative of the distribution curve of the temperature change rate again to obtain the amplitude change rate, and the finite difference method can also be used for numerical calculation. Set a threshold for the amplitude change rate. When the amplitude change rate exceeds this threshold, this position is considered a segmentation point. According to these segmentation points, perform regional segmentation on the thermoelectric power generation module in the direction from the cold end to the hot end to obtain multiple partitions.

[0099] (3)Determine the temperature segmentation interval according to the thermoelectric conversion efficiency of a single thermoelectric module.

[0100] It should be noted that the thermoelectric conversion efficiency of a single thermoelectric module is related to the working temperature, and different temperature intervals correspond to different thermoelectric conversion efficiencies. By determining the temperature segmentation interval, each thermoelectric module can operate in its optimal working temperature interval, thereby improving the power generation efficiency of the entire thermoelectric power generation module.

[0101] Specifically, the curve of the thermoelectric conversion efficiency of the selected single thermoelectric module varying with temperature can be obtained through experiments or by referring to materials. Furthermore, according to the efficiency-temperature curve, the temperature range can be divided into several intervals, and each interval corresponds to a relatively high and stable thermoelectric conversion efficiency.

[0102] (4) Determine the number of thermoelectric modules corresponding to each partition based on the temperature segmentation intervals.

[0103] It should be noted that the temperature ranges of each partition are different, and the number of thermoelectric modules suitable for placement within the partition can be determined according to the temperature segmentation intervals. Specifically, according to the predicted longitudinal temperature distribution trend described above, determine the temperature range of each partition, compare the temperature range of each partition with the temperature segmentation intervals, and determine the number of thermoelectric modules to be placed within the partition according to the temperature matching situation. For example, if the temperature range of a certain partition spans two temperature segmentation intervals, the number of thermoelectric modules can be allocated according to the temperature proportion and thermoelectric conversion efficiency within the interval. That is to say, the temperature intervals at which each thermoelectric module can achieve the best thermoelectric conversion efficiency are different. Take this temperature interval as the temperature segmentation interval, such as 100°C. Assume that the temperature range of partition i is Ti ∈ [150°C, 350°C], and the temperature segmentation interval is in units of 100°C. The finally divided intervals are Ti1 ∈ [150°C, 250°C] and Ti2 ∈ [250°C, 350°C]. Then, it can be determined that two thermoelectric modules are placed within this partition, that is, the number is 2.

[0104] (5) Take the sum of the numbers of thermoelectric modules in each partition as the quantity of the thermoelectric modules.

[0105] It should be noted that by adding the numbers of thermoelectric modules in each partition, the total number of thermoelectric modules required for the entire thermoelectric power generation module can be obtained, which can ensure that each partition has an appropriate number of thermoelectric modules to make full use of the temperature distribution inside the module and improve the power generation efficiency.

[0106] S106. Calculate the total heat collected by the collector according to the quantity of the thermoelectric modules and the material, and determine the boundary dimension information of the collector according to the total heat.

[0107] It should be noted that the overall size information of the thermoelectric power generation module is known. On this basis, the sizes of other components such as the clamping plates are fixed. After the number of thermoelectric modules is determined, the thickness information is also determined. At this time, the remaining size is the boundary size information of the collector. The thickness is the remaining size, and the other boundaries are the same as the overall size of the thermoelectric power generation module. The thermoelectric module needs to collect heat through the collector to achieve thermoelectric power generation, and the number of thermoelectric modules affects the total heat demand. Generally speaking, the more the number of thermoelectric modules, the more heat needs to be collected by the collector to ensure that each module can obtain sufficient heat to maintain thermoelectric power generation. This usually means that the area of the collector needs to be larger, and the boundary size needs to be adjusted accordingly. If the boundary size of the collector is too small, it will lead to insufficient heat collection, the thermoelectric module cannot work efficiently, and the power generation efficiency will decrease; if the size is too large, although the heat demand can be met, it will increase the material cost and the volume of the equipment.

[0108] Specifically, the total heat that the collector needs to collect can be calculated based on the heat required for a single thermoelectric module and the number of thermoelectric modules. Combining parameters such as the temperature and flow rate of the flue gas generated by combustion, and using the principles of heat transfer and relevant formulas, the effective heat transfer area of the collector that meets the heat demand is calculated, and then the boundary size information of the collector is determined.

[0109] Specifically, step S104 completes the design of a single thermoelectric module. Considering the Seebeck effect, Peltier effect, and Joule effect in the material field, the heat information Q of the thermoelectric module is comprehensively calculated. TEM . Step S105 completes the design of the number M of thermoelectric modules. Then in step S106, the total heat that the collector needs to collect can be calculated based on the product of the heat information of a single thermoelectric module and the number of thermoelectric modules. Then, according to the principles of heat transfer and fluid mechanics, the convective heat transfer coefficient (related to the flow rate) is calculated: and the fin efficiency , where C and m are constants, k f , V f,max , ν f , P r and Pr w are the thermal conductivity, the maximum velocity considering the blocking effect of the collector fin columns, the kinematic viscosity, the Prandtl number, and the Prandtl number at the wall temperature respectively, d is the diameter of the fin columns, H is the height of the fin columns, and k HC is the thermal conductivity of the bottom surface of the collector.

[0110] Finally, according to the formula the effective heat transfer area A of the collector that meets the heat demand is calculated. HC1 , where T HC is the surface temperature of the bottom surface of the collector, and T finalis the flue gas temperature. After determining the area, the shape of the collector also needs to be considered. For common flat-plate collectors, their length and width dimensions can be determined according to the effective heat transfer area; for other shapes, such as circular collectors, their radius and other dimensions are determined. In addition, factors such as installation space and manufacturing cost also need to be considered for their limitations on the boundary dimensions. Taking A HC1 The corresponding length, width dimension information and the remaining thickness are used as the boundary dimension information to determine the length, width and thickness of the collector, which serve as the boundary dimensions for the design.

[0111] In this way, by reasonably determining the boundary dimension information of the collector, the collector can be better matched with the thermoelectric module, improving the heat collection and transfer efficiency, ensuring that the thermoelectric module operates under an appropriate temperature difference, and enhancing the power generation efficiency and stability of the thermoelectric generation module.

[0112] S107: Using the boundary dimension information as the dimension constraint and the flue gas velocity and the flue gas temperature as the environmental boundary, calculate the geometric information of multiple rib columns.

[0113] It should be noted that the flue gas velocity and the flue gas temperature as the environmental boundary represent the working environmental conditions of the rib columns. The flue gas velocity affects the convective heat transfer intensity between the flue gas and the rib columns, and the flue gas temperature is the driving force for heat transfer. In addition, the geometric information of the rib columns includes parameters such as the shape of the rib columns (such as cylindrical, square, etc.), dimensions (such as diameter, height, spacing, etc.) and layout mode (such as the specific arrangement rules of row and column distribution), etc. These information determine the contact area between the rib columns and the flue gas, heat exchange efficiency and other performances. Specifically, according to the number of thermoelectric modules calculated in the previous steps, the total heat to be collected by the collector, and parameters such as the flue gas temperature and velocity, determine the heat exchange amount that the rib columns need to bear (the determination of the heat exchange amount provides a basis for the subsequent calculation of the rib column dimensions and layout). Then, according to the shape and dimensions of the collector and the requirements of the actual application scenario, select a suitable rib column shape (common rib column shapes are cylindrical and square). Among them, in order to ensure the regularity of the geometric shape, this application comprehensively considers various commonly used configurations such as cylinders, squares, and triangular prisms, and on the basis of certain other design parameters, uses the conventional single-variable method to calculate the power generation efficiency under each shape configuration, and finally selects the best shape in the current design environment. According to the heat exchange requirements and the heat transfer principle, use Newton's cooling law to calculate the height of the rib columns. After determining the height of the rib columns, calculate the diameter (for cylindrical rib columns) or side length (for square rib columns) of the rib columns according to the relationship between the heat exchange area and the surface area of the collector. For example, given the effective heat transfer area A of the collector HC1 , it is planned to arrange n rib columns, and it is required that the proportion of the effective heat exchange area covered by the rib columns in the surface area of the collector is β, then the heat exchange area of a single rib column is β*A HC1 / n.

[0114] In addition, it is also necessary to determine the spacing of the rib columns (including the normal spacing of the rib columns, that is, the distance between the rib columns along the direction perpendicular to the flue gas flow direction; and the parallel spacing of the rib columns, that is, the distance between the rib columns along the flue gas flow direction). The rib column spacing will affect the flow characteristics of the flue gas and the heat exchange efficiency. If the spacing is too small, the flow resistance of the flue gas will increase, resulting in a decrease in the flue gas flow rate and a reduction in the overall heat exchange effect. If the spacing is too large, the heat radiation and convective heat transfer between the rib columns will weaken, the heat of the flue gas cannot be fully utilized, and the heat distribution on the surface of the collector will be uneven. Specifically, numerical simulation or experimental research can be used to determine the appropriate rib column spacing. Finally, under the boundary size constraints of the collector, according to the calculated rib column size and spacing, the layout method of the rib columns can be further optimized. Specifically, the method for calculating the geometric information of the rib columns can be found in the description of related technologies and will not be elaborated here.

[0115] The method provided in this embodiment predicts the longitudinal temperature distribution trend by establishing a spatial model, determines the thermoelectric module material based on this, ensures its operation at an appropriate temperature, and gives full play to the material performance. At the same time, the number of thermoelectric modules is scientifically calculated and reasonably arranged, improving the conversion efficiency from thermal energy to electrical energy. Optimizing the boundary size of the collector and the geometric information of the rib columns enhances the heat collection and transfer capabilities, enabling the thermoelectric modules to better utilize heat for power generation, and overall improving the power generation efficiency of the thermoelectric generation module. In addition, when determining the boundary size information of the collector, factors such as the number of thermoelectric modules, heat demand, installation space, and manufacturing cost are comprehensively considered, avoiding problems of material waste or poor performance caused by too large or too small collector size, reducing material costs, and avoiding unnecessary module usage by reasonably calculating the number of thermoelectric modules, thus reducing module costs.

[0116] Embodiment 2:

[0117] Corresponding to the foregoing embodiment of the method for optimizing the structure design of a thermoelectric generation module, the present application also provides an embodiment of a device for optimizing the structure design of a thermoelectric generation module.

[0118] Figure 3 This is a schematic structural diagram of Embodiment 2 of the device for optimizing the structure design of a thermoelectric generation module provided by the present application. Please refer to Figure 3 This embodiment provides a device, including an acquisition module 310, a calculation module 320, a prediction module 330, and a determination module 340;

[0119] Among them, the acquisition module 310 is used to acquire the air flow rate and natural gas flow rate of the injection gas delivery pipeline;

[0120] The calculation module 320 is used to calculate the total heat released during the combustion process based on the air flow rate and natural gas flow rate, and calculate the flue gas flow velocity and flue gas temperature of the thermoelectric generation module based on the total heat;

[0121] The prediction module 330 is configured to use the flue gas flow rate and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend from the hot end to the cold end of the thermoelectric generation module; wherein, taking the flue gas temperature as the initial condition, the flow path of the flue gas is simulated according to the flue gas flow rate and the structural composition of the thermoelectric generation module.

[0122] The determination module 340 is configured to determine the material of the thermoelectric module according to the end point temperature value in the longitudinal temperature distribution trend.

[0123] The calculation module 320 is further configured to calculate the number of the thermoelectric modules according to the longitudinal temperature distribution trend.

[0124] The determination module 340 is further configured to calculate the total heat collected by the collector according to the number and material of the thermoelectric modules, and determine the boundary dimension information of the collector according to the total heat.

[0125] The calculation module 320 is further configured to use the boundary dimension information as the dimension constraint and the flue gas flow rate and the flue gas temperature as the environmental boundary to calculate the geometric information of multiple rib columns.

[0126] The device of this embodiment can be used to execute Figure 1 the steps of the method embodiment shown. The specific implementation principle and process are similar and will not be elaborated here.

[0127] For the implementation process of the functions and roles of each unit in the above device, please refer to the implementation process of the corresponding steps in the above method for details, which will not be elaborated here.

[0128] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The device embodiment described above is only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this application. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0129] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included in the scope of protection of this application.

Claims

1. An optimized design method for a thermoelectric power generation module structure, characterized in that, The method includes: Obtaining the air flow rate and natural gas flow rate of the injection gas delivery pipeline; Calculating the total heat released during the combustion process based on the air flow rate and natural gas flow rate, and calculating the flue gas flow rate and flue gas temperature of the thermoelectric generation module based on the total heat; Using the flue gas flow rate and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend from the hot end to the cold end of the thermoelectric generation module; wherein, using the flue gas temperature as the initial condition, simulating the flow path of the flue gas according to the flue gas flow rate and the structural composition of the thermoelectric generation module; Determining the material of the thermoelectric module according to the end point temperature value in the longitudinal temperature distribution trend; Calculating the number of thermoelectric modules according to the longitudinal temperature distribution trend; Calculating the total heat collected by the collector according to the number and material of the thermoelectric modules, and determining the boundary dimension information of the collector according to the total heat; Using the boundary dimension information as the dimension constraint and the flue gas flow rate and the flue gas temperature as the environmental boundary to calculate the geometric information of multiple rib columns.

2. The method according to claim 1, wherein The calculating of the flue gas temperature of the thermoelectric generation module includes: Calculating the total mass flow rate of the combustion gas after mixing the air flow rate and natural gas flow rate; Calculating the total heat released by the combustion of natural gas based on the product of the natural gas flow rate and the standard combustion enthalpy change; Calculating the temperature change value based on the ratio of the total heat and the product of the total mass flow rate and the mixed specific heat capacity; Calculating the flue gas temperature based on the sum of the temperature change value and the initial temperature value.

3. The method according to claim 2, wherein The calculating of the total mass flow rate of the combustion gas after mixing the air flow rate and natural gas flow rate includes: Determining multiple products after combustion according to the combustion gas after mixing; Calculating the mass flow rate of each product; Calculating the total mass flow rate based on the mass flow rate of each product.

4. The method according to claim 2, wherein Before calculating the temperature change value based on the ratio of the total heat and the product of the total mass flow rate and the mixed specific heat capacity, the method further includes: Determining the specific heat capacity weight of each product based on the excess air degree of the burner; Calculating the weighted sum of the specific heat capacities of each product based on the specific heat capacity weight to obtain the mixed specific heat capacity.

5. The method according to claim 2, wherein The numerical calculation formula of the temperature change value is: ； Among them, is the flow rate of natural gas, with the unit of L / s; is the flow rate of air, with the unit of L / s.

6. The method according to claim 3, characterized in that, The calculating of the mass flow rate of each product includes: Converting the natural gas flow rate and air flow rate into corresponding molar flow rates, and calculating the molar flow rate of the remaining oxygen and the molar flow rates of other products according to the molar flow rates; Calculating the mass flow rate of each product using the product of the molar flow rate of the remaining oxygen and the molar flow rates of other products and the molar mass of the corresponding substance.

7. The method according to claim 1, characterized in that, The calculation process of the flue gas flow rate includes: Calculating the inlet density based on the natural gas flow rate and air flow rate; Calculating the flue gas density based on the correlation between the inlet density and the flue gas density; Calculating the flue gas flow rate according to the ratio of the total mass flow rate and the product of the flue gas density and the cross-sectional area of the pipeline.

8. The method according to claim 1, wherein The using of the flue gas flow rate and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend of the thermoelectric generation module includes: Establishing a spatial model with the same size as the thermoelectric generation module; Taking the flue gas flow rate and the flue gas temperature as the inputs of the spatial model, simulate and calculate the longitudinal temperature distribution trend of the spatial model, and the temperature distribution trend is the temperature distribution when the rib columns are not designed for the thermoelectric generation module.

9. The method according to claim 1, characterized in that, Calculating the number of the thermoelectric modules according to the longitudinal temperature distribution trend includes: Calculating the distribution curve of the temperature change rate according to the temperature distribution trend, where the abscissa of the distribution curve is the coordinate value of the position corresponding to the temperature change rate in the direction of the thermoelectric generation module, the direction of the thermoelectric generation module is the direction from the cold end to the hot end of the thermoelectric generation module, and the ordinate of the distribution curve is the temperature change rate corresponding to the coordinate value; Dividing the direction of the thermoelectric generation module into multiple regions according to the amplitude change rate of the distribution curve to obtain multiple partitions of the thermoelectric generation module; Determining the temperature segmentation interval according to the thermoelectric conversion efficiency of a single thermoelectric module; Determining the number of thermoelectric modules corresponding to each partition based on the temperature segmentation interval; Taking the sum of the numbers of thermoelectric modules in each partition as the number of the thermoelectric modules.

10. An apparatus for optimizing the design of a thermoelectric power generation module structure, characterized in that, The device includes an acquisition module, a calculation module, a prediction module, and a determination module; Among them, the acquisition module is used to acquire the air flow rate and the natural gas flow rate of the injection gas delivery pipeline; The calculation module is used to calculate the total heat released during the combustion process based on the air flow rate and the natural gas flow rate, and calculate the flue gas flow rate and the flue gas temperature of the thermoelectric generation module based on the total heat; The prediction module is used to take the flue gas flow rate and the flue gas temperature as boundary conditions to predict the longitudinal temperature distribution trend from the hot end to the cold end of the thermoelectric generation module; among them, taking the flue gas temperature as the initial condition, simulate the flow path of the flue gas according to the flue gas flow rate and the structural composition of the thermoelectric generation module; The determination module is used to determine the material of the thermoelectric module according to the end point temperature value in the longitudinal temperature distribution trend; The calculation module is further used to calculate the number of the thermoelectric modules according to the longitudinal temperature distribution trend; The determination module is further used to calculate the total heat collected by the collector according to the number and material of the thermoelectric modules, and determine the boundary dimension information of the collector according to the total heat; The calculation module is further used to calculate the geometric information of multiple rib columns with the boundary dimension information as the dimension constraint and the flue gas flow rate and the flue gas temperature as the environmental boundary.

Images