Combustion chamber simulation method, device, equipment, storage medium and program product

Abstract

The application discloses a combustion chamber simulation method and device, equipment, storage medium and program product, and relates to the technical field of water heaters. The method comprises the following steps: determining an interaction interface of a target combustion chamber and an interaction parameter corresponding to the interaction interface; obtaining a medium property model, which is used for describing the property change between fuel gas and flue gas; constructing a fire bank model and a cavity model of the target combustion chamber according to the interaction parameter, wherein the fire bank model is used for describing the corresponding relationship between the interaction parameter input into a fire bank component of the target combustion chamber and the output of the fire bank component, and the cavity model is used for describing the corresponding relationship between the interaction parameter input into a cavity of the target combustion chamber and the output of the cavity; and based on the interaction interface, the fire bank model, the cavity model and the medium property model, a combustion chamber twin model corresponding to the target combustion chamber is built, which is used for performing a combustion chamber simulation operation. The application aims to establish a digital twin model corresponding to the combustion chamber in the water heater, so as to improve the product development efficiency of the combustion chamber.

Description

Technical Field

[0001] This application relates to the field of water heater technology, and in particular to a combustion chamber simulation method, apparatus, equipment, storage medium, and program product. Background Technology

[0002] Gas water heaters are an important type of hot water supply equipment in modern households. Among the core components of a gas water heater, the combustion chamber plays a crucial role. Inside the combustion chamber, the mixture of gas and air burns in the burner to produce high-temperature flue gas. Under the action of the fan, the high-temperature flue gas rises and flows through the combustion chamber cavity, heating cold water into hot water at the same time.

[0003] However, the working environment of the combustion chamber is quite complex. Although traditional experimental research methods can provide relatively intuitive and accurate data, they are not only technically difficult to conduct experiments directly using fuel gas and flue gas as working fluids, but also require complex and precise experimental equipment and a large amount of experimental materials, resulting in low product development efficiency for combustion chambers. Summary of the Invention

[0004] The main purpose of this application is to provide a combustion chamber simulation method, apparatus, equipment, storage medium, and program product, aiming to solve the technical problem of low product development efficiency of combustion chambers in existing water heaters.

[0005] To achieve the above objectives, this application proposes a combustion chamber simulation method, the method comprising: Determine the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; Obtain a medium property model, wherein the medium property model is used to describe the property changes between the fuel gas and the flue gas; Based on the interaction parameters, a burner model and a cavity model of the target combustion chamber are constructed, wherein the burner model is used to describe the correspondence between the interaction parameters input to the burner assembly of the target combustion chamber and the output of the burner assembly, and the cavity model is used to describe the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the output of the cavity. Based on the interactive interface, the burner model, the cavity model, and the medium property model, a combustion chamber twin model corresponding to the target combustion chamber is built for performing combustion chamber simulation operations.

[0006] In one embodiment, the step of determining the interaction interface of the target combustion chamber includes: Acquire interaction scenario information between the target combustion chamber and the outside world; Based on the interaction scenario information, a data interface for transmitting fluid parameters corresponding to the interaction between the target combustion chamber and the external fluid is selected as a fluid interface, and a data interface for transmitting thermal parameters corresponding to the thermal interaction between the target combustion chamber and the external fluid is selected as a thermal interface. The fluid interface and the thermal interface are used as interaction interfaces.

[0007] In one embodiment, the step of constructing the burner model and cavity model of the target combustion chamber based on the interaction parameters includes: Obtain the parameter input value corresponding to the interaction parameter; Based on the parameter input values, the output heat of the fire radiator assembly is calculated; Based on the output heat and the parameter input values, the stored energy of the cavity and the radiant heat of the flue gas are calculated. The output heat of the burner assembly is used as the parameter output value of the burner assembly; The stored energy and radiant heat of the flue gas in the cavity are used as the parameter output values ​​of the cavity. Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the burner assembly, a burner model of the target combustion chamber is constructed. Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the cavity, a cavity model of the target combustion chamber is constructed.

[0008] In one embodiment, the step of calculating the output heat of the heat exchanger assembly based on the parameter input value includes: The physical heat of the air is calculated based on the input air volume in the parameter input values; Based on the input gas quantity in the parameter input values, the physical heat and chemical heat of the gas are calculated. The sum of the physical heat of the air, the physical heat of the gas, and the chemical heat of the gas is used as the input heat. The flue gas temperature of the output flue gas is calculated based on the input air volume, the input fuel gas volume, and the input heat. Based on the flue gas temperature, the heat carried out by each component in the output flue gas is calculated respectively. The sum of the heat carried out by each component in the output flue gas is taken as the output heat.

[0009] In one embodiment, the step of calculating the stored energy of the cavity and the radiant heat of the flue gas based on the output heat and the parameter input values ​​includes: The stored energy of the cavity is calculated based on the output heat, the inlet gas parameters and the outlet gas parameters in the parameter input values; The radiant heat of the flue gas in the cavity is calculated based on the flue gas temperature and the cavity wall temperature in the parameter input value.

[0010] In one embodiment, after the step of building a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface, the burner model, the cavity model, and the medium property model, for performing combustion chamber simulation operations, the combustion chamber simulation method further includes: Obtain target scene information, wherein the target scene information includes the connection relationship between the target combustion chamber and the water heater components; Based on the connection relationship, the combustion chamber twin model is connected to the component twin model of the water heater component to achieve simulation of the target scenario.

[0011] Furthermore, to achieve the above objectives, this application also proposes a combustion chamber simulation device, which includes: The determination module is used to determine the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; The acquisition module is used to acquire a medium property model, wherein the medium property model is used to describe the property changes between the gas and the flue gas. A construction module is used to construct a burner model and a cavity model of the target combustion chamber based on the interaction parameters. The burner model is used to describe the correspondence between the interaction parameters input to the burner assembly of the target combustion chamber and the output of the burner assembly. The cavity model is used to describe the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the output of the cavity. A construction module is used to build a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface, the burner model, the cavity model and the medium property model, for performing combustion chamber simulation operations.

[0012] In addition, to achieve the above objectives, this application also proposes a combustion chamber simulation device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the combustion chamber simulation method as described above.

[0013] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the combustion chamber simulation method described above.

[0014] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the combustion chamber simulation method described above.

[0015] One or more technical solutions proposed in this application have at least the following technical effects: This application determines the interaction interface of the target combustion chamber and the corresponding interaction parameters; obtains a medium property model, wherein the medium property model is used to describe the changes in the physical properties between the gas and flue gas; constructs a burner model and a cavity model of the target combustion chamber based on the interaction parameters, wherein the burner model is used to describe the correspondence between the interaction parameters input to the burner assembly and the burner assembly output of the target combustion chamber, and the cavity model is used to describe the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the cavity output of the cavity; and builds a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface, the burner model, the cavity model, and the medium property model to perform combustion chamber simulation operations. Thus, this application describes the correspondence between the interaction parameters of the gas and flue gas flowing through the target combustion chamber and the output of the target combustion chamber, constructing a combustion chamber twin model, thereby obtaining the changes in the interaction parameters before and after the gas flows into the target combustion chamber for combustion, achieving accurate simulation of the combustion chamber usage scenario, and effectively improving the product development efficiency of the combustion chamber in water heaters. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating an embodiment of the combustion chamber simulation method of this application. Figure 2 This is a schematic diagram of the combustion chamber twin model involved in the embodiments of this application; Figure 3 This is a flowchart illustrating Embodiment 2 of the combustion chamber simulation method of this application; Figure 4 This is a schematic diagram of a fire-damping assembly involved in an embodiment of this application; Figure 5This is a schematic diagram of a cavity involved in an embodiment of this application; Figure 6 This is a flowchart illustrating Embodiment 3 of the combustion chamber simulation method of this application; Figure 7 This is a simulation scene diagram of the combustion chamber twin model involved in the embodiments of this application; Figure 8 This is a schematic diagram of the modular structure of the combustion chamber simulation device according to an embodiment of this application; Figure 9 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the combustion chamber simulation method in this application embodiment.

[0019] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0021] To better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indicators will also change accordingly. It should be understood that although the steps in the flowcharts of the embodiments of this application are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders.

[0023] While existing experimental research methods for combustion chambers in water heaters can provide relatively intuitive and accurate data, they are technically challenging because they directly use gas and flue gas as working fluids. They also require complex and precise experimental equipment and a large amount of experimental materials, resulting in low product development efficiency for combustion chambers.

[0024] This application provides a combustion chamber simulation method. It involves determining the interaction interface of a target combustion chamber and the corresponding interaction parameters; obtaining a medium property model, where the medium property model describes the property changes between fuel gas and flue gas; constructing a burner model and a cavity model of the target combustion chamber based on the interaction parameters, where the burner model describes the correspondence between the interaction parameters input to the burner assembly and the burner assembly output, and the cavity model describes the correspondence between the interaction parameters input to the cavity and the cavity output; and building a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface, the burner model, the cavity model, and the medium property model to perform combustion chamber simulation operations. Thus, this application describes the correspondence between the interaction parameters of the fuel gas and flue gas flowing through the target combustion chamber and the output of the target combustion chamber, constructing a combustion chamber twin model. This allows for the determination of the changes in interaction parameters before and after combustion of the fuel gas in the target combustion chamber, achieving accurate simulation of combustion chamber usage scenarios and effectively improving the product development efficiency of combustion chambers in water heaters.

[0025] Based on this, the embodiments of this application provide a combustion chamber simulation method, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the combustion chamber simulation method of this application.

[0026] In this embodiment, the combustion chamber simulation method includes steps S10 to S40: Step S10: Determine the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; It should be noted that the interaction interface is the data interface corresponding to the interaction between the target combustion chamber and the external environment. The interaction interface is used to transmit the interaction parameters of the gas and flue gas flowing through the target combustion chamber, such as fluid-related interaction parameters such as the composition, pressure, mass flow rate, and specific enthalpy of the gas and flue gas, as well as heat-related interaction parameters such as heat flow rate and temperature.

[0027] In this embodiment, the interaction interface of the target combustion chamber can be determined according to the simulation scenario requirements of the target combustion chamber. The parameter items in the interaction parameters corresponding to the interaction interface can be selected according to different specific requirements. For example, if the focus is on the changes of fluid and heat-related parameters of the target combustion chamber, fluid parameters such as mass flow rate, pressure, specific enthalpy, and composition, as well as heat parameters such as heat flow rate and temperature, can be used as interaction parameters. Of course, it is understood that the interaction parameters may include more or fewer parameter items. For example, the interaction interface is shown in the table below: Table 1 Interaction Interface

[0028] In one feasible implementation, step S10 may include steps S11 to S13: Step S11: Obtain interaction scenario information between the target combustion chamber and the outside world; Step S12: Based on the interaction scenario information, select the data interface used to transmit the fluid parameters corresponding to the interaction between the target combustion chamber and the external fluid as the fluid interface, and the data interface used to transmit the thermal parameters corresponding to the thermal interaction between the target combustion chamber and the external fluid as the thermal interface. Step S13: Use the fluid interface and the thermal interface as the interaction interface.

[0029] It should be noted that the interactive scenario information may include relevant parameters of fluids such as gas, air, and flue gas flowing into and out of the target combustion chamber under the interactive scenario, such as temperature, pressure, flow rate, composition, and specific enthalpy, as well as relevant parameters of the thermal interaction between the target combustion chamber and the outside world, such as heat flow and temperature.

[0030] This embodiment can filter out the interaction interfaces required for modeling from the relevant parameters involved in the real-world interaction between the target combustion chamber and the outside world, based on the interaction scenario information. This embodiment can acquire the interaction scenario information between the target combustion chamber and the outside world, and then filter out the data interface for transmitting the fluid parameters corresponding to the fluid interaction between the target combustion chamber and the outside world as the fluid interface, and the data interface for transmitting the thermal parameters corresponding to the thermal interaction between the target combustion chamber and the outside world as the thermal interface. Thus, the fluid interface and the thermal interface can be used as the interaction interfaces. The fluid parameters may include parameters such as the inlet flow rate, inlet pressure, and inlet temperature of the gas and air at the input of the target combustion chamber, and parameters such as the outlet flow rate, outlet pressure, and outlet temperature of the flue gas at the output of the target combustion chamber.

[0031] In this embodiment, data interfaces for transmitting fluid parameters corresponding to the interaction between the target combustion chamber and the external fluid are selected from the interaction scenario information as fluid interfaces, and data interfaces for transmitting thermal parameters corresponding to the thermal interaction between the target combustion chamber and the external fluid are selected as thermal interfaces, thus constructing the interaction interface of the target combustion chamber.

[0032] Step S20: Obtain the medium property model, wherein the medium property model is used to describe the changes in physical properties between the fuel gas and the flue gas; It should be noted that the medium property model is used to describe the changes in physical properties between fuel gas and flue gas. The medium property model includes physical property parameters between fuel gas and flue gas in the conversion and transfer process, namely, the mass ratio, specific heat at constant pressure, specific enthalpy, and other physical properties between fuel gas and flue gas during the combustion of fuel gas into flue gas.

[0033] This embodiment obtains the physical property parameters related to the changes in the physical properties of gas and flue gas during the conversion of gas into flue gas, which can be used as the medium property model. It is understood that different types of gas (such as liquefied petroleum gas, natural gas, etc.) and different working environments (such as low-altitude and high-altitude environments) will result in certain differences in the changes in the physical properties of gas and flue gas. This embodiment can also update the physical property parameters describing the changes in the physical properties of gas and flue gas in the medium property model according to different gas types and working environments, so as to broaden the applicability of the combustion chamber twin model. Furthermore, since the medium property model is an independent part of the combustion chamber twin model, updating the medium property model after the combustion chamber twin model is built will not affect other parts, ensuring the versatility of the combustion chamber twin model.

[0034] Step S30: Based on the interaction parameters, construct the burner model and cavity model of the target combustion chamber. The burner model is used to describe the correspondence between the interaction parameters input to the burner assembly of the target combustion chamber and the output of the burner assembly. The cavity model is used to describe the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the output of the cavity. It should be noted that the burner model is used to describe the correspondence between the interaction parameters in the burner assembly and the output of the burner assembly in the target combustion chamber, and the cavity model is used to describe the correspondence between the interaction parameters in the cavity and the output of the cavity in the target combustion chamber.

[0035] In this embodiment, the target combustion chamber is physically discretized into three parts: the burner assembly, the cavity, and the medium. Corresponding burner and cavity models are then constructed accordingly. In this embodiment, the burner model describes the thermal energy change process during the conversion of combustion gas into flue gas through the correspondence between the input burner assembly and its output in the target combustion chamber using the interaction parameters. The cavity model, on the other hand, describes the flow characteristics of the flue gas and the heat exchange process with the cavity walls through the correspondence between the input cavity and its output in the target combustion chamber using the interaction parameters.

[0036] Step S40: Based on the interactive interface, the burner model, the cavity model, and the medium property model, build a combustion chamber twin model corresponding to the target combustion chamber for performing combustion chamber simulation operations.

[0037] In this embodiment, the interactive interface can serve as the data interface for the entire combustion chamber—the burner model and cavity model corresponding to the target combustion chamber—to interact with the outside world. The medium property model provides the relevant physical property parameters for the calculation process of gas conversion into flue gas using the burner model and cavity model, resulting in a combustion chamber twin model corresponding to the target combustion chamber, which is then used to perform combustion chamber simulation operations. For example... Figure 2As shown, after inputting the gas and air-related interaction parameters (such as flow rate, velocity, specific enthalpy, composition, etc.) into the combustion chamber twin model, the input parameter values ​​are calculated through the burner model, cavity model, and medium property model to obtain the corresponding parameter output values. These parameter output values ​​are then output to the downstream water heater components via the interaction interface. Therefore, this embodiment uses a combustion chamber twin model to describe the changes in gas and flue gas before and after flowing through the target combustion chamber under different control conditions, thus enabling accurate simulation of different combustion chamber simulation scenarios.

[0038] The first embodiment of this application provides a combustion chamber simulation method. This method involves determining the interaction interface of a target combustion chamber and the corresponding interaction parameters; obtaining a medium property model, which describes the property changes between fuel gas and flue gas; constructing a burner model and a cavity model of the target combustion chamber based on the interaction parameters. The burner model describes the correspondence between the interaction parameters input to the burner assembly and the burner assembly output, and the cavity model describes the correspondence between the interaction parameters input to the cavity and the cavity output. Based on the interaction interface, the burner model, the cavity model, and the medium property model, a combustion chamber twin model corresponding to the target combustion chamber is built for performing combustion chamber simulation operations. Therefore, this embodiment describes the correspondence between the interaction parameters of the fuel gas and flue gas flowing through the target combustion chamber and the output of the target combustion chamber, constructing a combustion chamber twin model. This allows for the determination of the changes in interaction parameters before and after combustion of the fuel gas in the target combustion chamber, achieving accurate simulation of combustion chamber usage scenarios and effectively improving the product development efficiency of combustion chambers in water heaters.

[0039] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 3 Step S30 also includes steps S31 to S37: Step S31: Obtain the parameter input values ​​corresponding to the interaction parameters; Step S32: Calculate the output heat of the firebox assembly based on the parameter input values; Step S33: Based on the output heat and parameter input values, calculate the stored energy of the cavity and the radiant heat of the flue gas; Step S34: Use the output heat of the burner assembly as the parameter output value of the burner assembly; Step S35: The stored energy of the cavity and the radiant heat of the flue gas are used as the parameter output values ​​of the cavity; Step S36: Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the burner assembly, construct the burner model of the target combustion chamber; Step S37: Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the cavity, construct the cavity model of the target combustion chamber.

[0040] It should be noted that the parameter input values ​​are the input values ​​of the interaction parameters of the combustion chamber twin model, such as gas and air related interaction parameters (such as flow rate, velocity, specific enthalpy, composition, etc.).

[0041] This embodiment can obtain the parameter input values ​​corresponding to the interactive parameters input to the target combustion chamber. Therefore, this embodiment can calculate the output heat of the burner assembly based on these parameter input values ​​using the principle of energy conservation. This embodiment can also calculate the chemical heat released by the combustion gas during combustion using the input gas quantity in the parameter input values ​​as the input heat. Of course, to improve the model's accuracy, this embodiment can also calculate the physical heat of the air itself based on the input air quantity in the parameter input values, similarly calculate the physical heat of the gas itself based on the input gas quantity in the parameter input values, and calculate the chemical heat of the gas released during combustion based on the input gas quantity. The sum of the physical heat of the air, the physical heat of the gas, and the chemical heat of the gas is used as the input heat. Then, the heat carried out by the output flue gas is calculated based on the input heat as the output heat. Furthermore, since the heat input to the target combustion chamber is within the cavity, some of the heat is subsequently transferred to the water through a heat exchanger with the flue gas to heat the water before being discharged into the environment, while some heat is stored in the internal environment of the cavity. Therefore, this embodiment can also calculate the stored energy and flue gas radiant heat of the cavity based on the output heat and the parameter input values. Thus, this embodiment can use the input heat and output heat of the burner assembly as the parameter output values ​​of the burner assembly, and the stored energy and flue gas radiant heat of the cavity as the parameter output values ​​of the cavity. Furthermore, based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the burner assembly, a burner model of the target combustion chamber is constructed, and based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the cavity, a cavity model of the target combustion chamber is constructed. This embodiment can describe the thermal energy change process during the conversion of combustion gas into flue gas using the burner model, and describe the flow characteristics of the flue gas and the heat exchange process with the cavity wall using the cavity model, thereby achieving an accurate description of the combustion process of the burner assembly in the combustion chamber, as well as the flue gas flow and cavity heat exchange process, to improve the accuracy of the finally constructed combustion chamber twin model.

[0042] In some embodiments, step S32 includes steps A10 to A60: Step A10: Calculate the physical heat of the air based on the input air volume in the parameter input values; Step A20: Calculate the physical heat and chemical heat of the gas based on the input gas quantity in the parameter input values. Step A30: Use the sum of the physical heat of air, the physical heat of fuel gas, and the chemical heat of fuel gas as the input heat. Step A40: Calculate the flue gas temperature of the output flue gas based on the input air volume, input fuel gas volume, and input heat. Step A50: Calculate the heat carried out by each component in the output flue gas based on the flue gas temperature. Step A60: The sum of the heat carried out by each component in the output flue gas is taken as the output heat.

[0043] like Figure 4 As shown, Figure 4 This is a schematic diagram of the burner assembly involved in this application embodiment. Gas enters through the gas inlet of the burner assembly, is burned and converted into high-temperature flue gas, and then discharged from the flue gas outlet. In this embodiment, the following is the calculation process taking a standard unit quantity of input gas (i.e., 1 Nm³, the volume of 1 cubic meter of gas at standard atmospheric pressure and standard temperature) as an example. Since air itself possesses a certain amount of thermal energy, this embodiment can calculate the physical heat of air based on the input air quantity in the parameter input values. For example, the formula for calculating the physical heat of air per unit standard unit quantity of gas is as follows: ; In the above formula, Physical heat of air, kcal / Nm 3 ; V0 is the air coefficient; V0 is the theoretical air volume (Nm³). 3 Dry air / Nm 3 Dry gas; The isobaric volumetric specific heat of air, kcal / (Nm³) 3 .K); 1.24 is the specific volume of water vapor, Nm 3 / kg; The isobaric volumetric specific heat of water vapor is kcal / (Nm³). 3 .K); Moisture content of air, kg / Nm³ 3 Dry air; Ta is the air temperature, K.

[0044] With H2, CO, C m H n Taking H2S and O2 as the components of the input fuel gas as an example, under standard conditions (273.15K, 101325Pa), 1Nm 3 The theoretical air volume required for the combustion of dry fuel gas can be calculated using the following formula: ; Where H2 represents the amount of hydrogen in the input fuel gas, CO represents the amount of carbon monoxide in the input fuel gas, and C represents the amount of carbon monoxide in the input fuel gas. m H n H2S represents the amount of hydrocarbons in the input fuel gas, H2S represents the amount of hydrogen sulfide in the input fuel gas, and O2 represents the amount of oxygen in the input fuel gas. Air coefficient: V represents the input air volume.

[0045] Since natural gas itself also possesses a certain amount of thermal energy, this embodiment can calculate the physical heat of the natural gas based on the input quantity of natural gas in the parameter input values. For example, the physical heat of natural gas per unit standard quantity can be calculated using the following formula: ; In the above formula, The physical heat of the gas, kcal / Nm 3 ; The isobaric volumetric specific heat of the gas, kcal / (Nm³) 3 .K); The isobaric volumetric specific heat of water vapor in fuel gas (kcal / (Nm³)) 3 .K); Moisture content of fuel gas, kg / Nm³ 3 Dry gas; Tg is the gas temperature, K.

[0046] The chemical heat of gas released during combustion can be calculated based on the input gas quantity and the lower heating value of the gas, i.e., the chemical heat of gas is the product of the input gas quantity and the lower heating value of the gas. For example, the formula for calculating the chemical heat of gas per unit standard quantity of gas is as follows: ; In the above formula, The chemical heat of the fuel gas, kcal / Nm 3 H l The lower heating value of the fuel gas, kcal / Nm³ 3 .

[0047] Therefore, the input heat of the target combustion chamber is the sum of the physical heat of the air, the physical heat of the fuel gas, and the chemical heat of the fuel gas.

[0048] Based on the law of conservation of mass, in this embodiment, the sum of the masses of the input air and the input fuel gas can be used as the mass of the output flue gas. Then, the input heat is divided by the product of the flue gas mass and the isobaric volumetric heat of the flue gas to obtain the flue gas temperature. Based on the flue gas temperature, the heat carried out by each component in the output flue gas is then calculated.

[0049] This embodiment can calculate the heat carried away by each component in the flue gas separately, and then sum the heat carried away by each component as the heat carried out by the flue gas. For example, since the carbon dioxide content in the air is extremely low, the heat carried away by the flue gas... There are two sources: the carbon-containing components of the combustible gas produced by combustion, and the original components of the gas entering the flue gas. Therefore, in the flue gas... The formula for calculating the heat removed is as follows: ; In the above formula, This is the average isobaric volumetric specific heat of carbon dioxide, expressed in kcal / Nm³. 3 .K,(∑mC n H m (+CO+CO2) represents the total mass of carbon components in the fuel gas, T f This refers to the flue gas temperature.

[0050] For example, due to the high nitrogen content in the air, the nitrogen in the flue gas comes from three different sources: the stoichiometric air required for combustion, the original composition of the fuel gas, and the excess air. The formula for calculating the heat removed is as follows: ; In the above formula, 0.79 represents the volumetric composition of nitrogen in dry air; Excess air volume, which is the difference between the input air volume and the theoretical air volume (V-V0), is measured in Nm³. 3 Dry air / Nm 3 Dry gas; This is the average isobaric volumetric specific heat of nitrogen, expressed in kcal / Nm³. 3 .K, T represents the nitrogen content in the fuel gas. f This refers to the flue gas temperature.

[0051] For example, since dry fuel gas and dry air are used in the above calculations, the water in the flue gas has one source: the hydrogen-containing components of the fuel gas from combustion. The formula for calculating the heat removed is as follows: ; In the above formula, ∑n / 2C n H m +H2 S +H2) is half the total mass of hydrogen elements contained in the gas (because two hydrogen atoms are needed to generate one H2O). The average isobaric volumetric specific heat of water, expressed in kcal / Nm³. 3 .K,Tf This refers to the flue gas temperature.

[0052] For example, the oxygen in the flue gas has one source: it enters with excess air. The formula for calculating the heat removed is as follows: ; In the above formula, This is the average isobaric volumetric specific heat of oxygen, expressed in kcal / Nm³. 3 K; (V-V0) is the difference between the input air volume and the theoretical air volume; 0.21 is the volumetric oxygen content in dry air; T f This refers to the flue gas temperature.

[0053] Therefore, this embodiment can remove the flue gas... The heat carried away, in the smoke The heat carried away by the flue gas The heat and smoke carried away The sum of the heat carried away is taken as the output heat. Since the proportions of each component in the flue gas and the specific heat per unit volume at constant pressure are different, this embodiment calculates the heat carried away by each component in the output flue gas separately, which can make the obtained output heat more accurate, thereby improving the accuracy of the firebox model.

[0054] In some embodiments, step S33 includes steps B10 to B20: Step B10: Calculate the stored energy of the cavity based on the output heat and the inlet gas parameters and outlet gas parameters in the parameter input values. Step B20: Calculate the radiant heat of the flue gas in the cavity based on the flue gas temperature and the cavity wall temperature in the parameter input values.

[0055] like Figure 5 As shown, Figure 5 This is a schematic diagram of the cavity involved in an embodiment of this application. After the flue gas enters the cavity of the target combustion chamber through the flue gas inlet, it is discharged from the flue gas outlet. During this process, the flue gas exchanges heat with the cavity wall. The inlet gas parameters are parameters such as the mass, enthalpy, and velocity of the flue gas flowing into the cavity, and the outlet gas parameters are parameters such as the mass, enthalpy, and velocity of the flue gas flowing out of the cavity.

[0056] In this embodiment, the total inflow energy of the flue gas can be calculated using the inlet gas parameters, and the total outflow energy of the flue gas can be calculated using the outlet gas parameters. The difference between the total inflow energy and the total outflow energy is then used as the stored energy of the cavity. For example, the formula for calculating the stored energy is as follows: ; In the above formula, Ecv For storing energy, J;m in The mass of the inlet gas is expressed in kg and h. in Enthalpy of the inlet gas (J / kg); v in The velocity of the inlet gas is m / s; m out The mass of the outlet gas is expressed in kg and h. out Enthalpy of the outlet gas (J / kg); v out V is the velocity of the outlet gas, m / s; P is the pressure of the combustion chamber, Pa; V is the volume of the combustion chamber, m3; Q is the heat exchanged between the gas inside the chamber and the outside during combustion, i.e., the heat dissipated from the chamber to the outside during combustion, J.

[0057] When a temperature difference exists between the flue gas and the cavity wall, the flue gas will radiate heat to the cavity wall. Therefore, in this embodiment, the radiant heat of the flue gas in the cavity can be calculated based on the flue gas temperature and the cavity wall temperature in the parameter input value. The radiant heat of the flue gas is positively correlated with the temperature difference between the flue gas and the cavity wall; that is, the greater the temperature difference, the greater the radiant heat transfer. For example, the formula for calculating the radiant heat of the flue gas is as follows: ; In the above formula, Q r The heat radiated by the flue gas, in W; Emissivity is a proportionality coefficient representing the ability to emit radiation. The Stefan-Boltzmann constant is 5.67 × 10⁻⁸ W / (m²•K). 4 A is the area of ​​the cavity wall, and T is the area of ​​the cavity wall. f T represents the flue gas temperature. w This refers to the temperature of the cavity wall.

[0058] Therefore, this embodiment calculates the stored energy of the cavity based on the output heat, the inlet gas parameters, and the outlet gas parameters in the parameter input values; and calculates the flue gas radiative heat of the cavity based on the flue gas temperature and the cavity wall temperature in the parameter input values. The energy change process of the cavity is described from both the perspectives of energy conservation and radiative heat transfer, effectively improving the accuracy of the cavity model.

[0059] In the second embodiment of this application, the following steps are taken: The parameter input values ​​corresponding to the interaction parameters are obtained; based on the parameter input values, the output heat of the burner assembly is calculated; based on the output heat and the parameter input values, the stored energy and flue gas radiant heat of the cavity are calculated; the input heat and output heat of the burner assembly are used as the parameter output values ​​of the burner assembly; the stored energy and flue gas radiant heat of the cavity are used as the parameter output values ​​of the cavity; based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the burner assembly, a burner model of the target combustion chamber is constructed; based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the cavity, a cavity model of the target combustion chamber is constructed. Thus, this embodiment uses the burner model to describe the thermal energy change process during the conversion of combustion gas into flue gas, and uses the cavity model to describe the flow characteristics of the flue gas and the heat exchange process with the cavity wall, thereby achieving an accurate description of the combustion process of the burner assembly in the combustion chamber, as well as the flue gas flow and cavity heat exchange process, to improve the accuracy of the finally constructed combustion chamber twin model.

[0060] Based on the first embodiment of this application, in the third embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 6 The combustion chamber simulation method described after S30 further includes steps C10 to C20: Step C10: Obtain target scene information, including the connection relationship between the target combustion chamber and the water heater components; Step C20: Based on the connection relationship, connect the combustion chamber twin model with the component twin model of the water heater component to achieve the simulation of the target scenario.

[0061] It should be noted that the water heater components are the parts that are expected to be connected to the target combustion chamber in the target scenario, such as gas pipelines, fans, flues, heat exchangers, etc.

[0062] like Figure 7 As shown, the interaction entry point of the combustion chamber twin model is connected to the environment P, while the burner model is connected to the cavity model. The interaction exit point is also connected to the environment P. This embodiment can achieve target scene simulation by acquiring target scene information, including the connection relationship between the target combustion chamber and the water heater component; and by connecting the combustion chamber twin model to the component twin model of the water heater component based on this connection relationship. For example, if the target scene in this embodiment is to simulate the flue gas portion, a digital twin model corresponding to the flue gas heat exchanger, a water heater component, is connected after the combustion chamber twin model to simulate the entire cycle of flue gas generation, flow, heat exchange, and final discharge from the water heater.

[0063] Since the combustion chamber twin model in this embodiment does not model the entire device as in the traditional twin model, but rather models a single component of the entire device independently, the connection components of the water heater required by the combustion chamber twin model can be adjusted according to specific needs, thus making it applicable to more different simulation scenarios and more widely applicable.

[0064] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the combustion chamber simulation method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0065] This application also provides a combustion chamber simulation device, please refer to... Figure 7 The combustion chamber simulation device includes: The determination module 10 is used to determine the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; The acquisition module 20 is used to acquire a medium property model, wherein the medium property model is used to describe the property changes between the gas and the flue gas; The construction module 30 is used to construct a control body model of the target combustion chamber based on the interaction parameters, wherein the control body model is used to describe the correspondence between the interaction parameters input to the target combustion chamber and the output of the target combustion chamber; The module 40 is used to build a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface and the control body model, and to perform combustion chamber simulation operations.

[0066] In some embodiments, the determining module 10 is further configured to: Acquire interaction scenario information between the target combustion chamber and the outside world; Based on the interaction scenario information, a data interface for transmitting fluid parameters corresponding to the interaction between the target combustion chamber and the external fluid is selected as a fluid interface, and a data interface for transmitting thermal parameters corresponding to the thermal interaction between the target combustion chamber and the external fluid is selected as a thermal interface. The fluid interface and the thermal interface are used as interaction interfaces.

[0067] In some embodiments, the construction module 30 is further configured to: Obtain the parameter input value corresponding to the interaction parameter; Based on the parameter input values, the output heat of the fire radiator assembly is calculated; Based on the output heat and the parameter input values, the stored energy of the cavity and the radiant heat of the flue gas are calculated. The output heat of the burner assembly is used as the parameter output value of the burner assembly; The stored energy and radiant heat of the flue gas in the cavity are used as the parameter output values ​​of the cavity. Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the burner assembly, a burner model of the target combustion chamber is constructed. Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the cavity, a cavity model of the target combustion chamber is constructed.

[0068] In some embodiments, the construction module 30 is further configured to: The physical heat of the air is calculated based on the input air volume in the parameter input values; Based on the input gas quantity in the parameter input values, the physical heat and chemical heat of the gas are calculated. The sum of the physical heat of the air, the physical heat of the gas, and the chemical heat of the gas is used as the input heat. The flue gas temperature of the output flue gas is calculated based on the input air volume, the input fuel gas volume, and the input heat. Based on the flue gas temperature, the heat carried out by each component in the output flue gas is calculated respectively. The sum of the heat carried out by each component in the output flue gas is taken as the output heat.

[0069] In some embodiments, the construction module 30 is further configured to: The stored energy of the cavity is calculated based on the output heat, the inlet gas parameters and the outlet gas parameters in the parameter input values; The radiant heat of the flue gas in the cavity is calculated based on the flue gas temperature and the cavity wall temperature in the parameter input value.

[0070] In some embodiments, the combustion chamber simulation device further includes a simulation module for: Obtain target scene information, wherein the target scene information includes the connection relationship between the target combustion chamber and the water heater components; Based on the connection relationship, the combustion chamber twin model is connected to the component twin model of the water heater component to achieve simulation of the target scenario.

[0071] The combustion chamber simulation device provided in this application, employing the combustion chamber simulation method described in the above embodiments, can solve the technical problem of low product development efficiency of combustion chambers in existing water heaters. Compared with the prior art, the beneficial effects of the combustion chamber simulation device provided in this application are the same as those of the combustion chamber simulation method provided in the above embodiments, and other technical features in the combustion chamber simulation device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0072] This application provides a combustion chamber simulation device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the combustion chamber simulation method in Embodiment 1 above.

[0073] The following is for reference. Figure 8 The diagram illustrates a structural schematic of a combustion chamber simulation device suitable for implementing embodiments of this application. The combustion chamber simulation device in these embodiments may include, but is not limited to, terminal devices such as laptops, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), desktop computers, and servers. Figure 8 The combustion chamber simulation device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0074] like Figure 8 As shown, the combustion chamber simulation device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the combustion chamber simulation device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007, such as touchscreens, touchpads, keyboards, mice, image sensors, etc.; output devices 1008, such as liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003, such as magnetic tapes, hard disks, etc.; and communication devices 1009. The communication device 1009 allows the combustion chamber simulation equipment to communicate wirelessly or wiredly with other devices to exchange data. Although the figure shows a combustion chamber simulation equipment with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0075] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0076] The combustion chamber simulation device provided in this application, employing the combustion chamber simulation method described in the above embodiments, can solve the technical problem of low product development efficiency in existing water heater combustion chambers. Compared with the prior art, the beneficial effects of the combustion chamber simulation device provided in this application are the same as those of the combustion chamber simulation method provided in the above embodiments, and other technical features of this combustion chamber simulation device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0077] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0078] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0079] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the combustion chamber simulation method in the above embodiments.

[0080] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0081] The aforementioned computer-readable storage medium may be included in the combustion chamber simulation device; or it may exist independently and not assembled into the combustion chamber simulation device.

[0082] The aforementioned computer-readable storage medium carries one or more programs. When these programs are executed by the combustion chamber simulation device, the combustion chamber simulation device causes the following: it determines the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; it acquires a medium property model, wherein the medium property model describes the property changes between the combustion gas and the flue gas; based on the interaction parameters, it constructs a burner model and a cavity model of the target combustion chamber, wherein the burner model describes the correspondence between the interaction parameters input to the burner assembly and the burner assembly output of the target combustion chamber, and the cavity model describes the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the cavity output; and based on the interaction interface, the burner model, the cavity model, and the medium property model, it builds a combustion chamber twin model corresponding to the target combustion chamber for performing combustion chamber simulation operations.

[0083] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0084] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0085] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0086] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described combustion chamber simulation method, which can solve the technical problem of low product development efficiency of combustion chambers in existing water heaters. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as the beneficial effects of the combustion chamber simulation method provided in the above embodiments, and will not be repeated here.

[0087] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the combustion chamber simulation method described above.

[0088] The computer program product provided in this application can solve the technical problem of low product development efficiency of combustion chambers in existing water heaters. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the combustion chamber simulation method provided in the above embodiments, and will not be repeated here.

[0089] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A combustion chamber simulation method, characterized in that, The combustion chamber simulation method includes: Determine the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; Obtain a medium property model, wherein the medium property model is used to describe the property changes between the fuel gas and the flue gas; Based on the interaction parameters, a burner model and a cavity model of the target combustion chamber are constructed, wherein the burner model is used to describe the correspondence between the interaction parameters input to the burner assembly of the target combustion chamber and the output of the burner assembly, and the cavity model is used to describe the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the output of the cavity. Based on the interactive interface, the burner model, the cavity model, and the medium property model, a combustion chamber twin model corresponding to the target combustion chamber is built for performing combustion chamber simulation operations.

2. The combustion chamber simulation method as described in claim 1, characterized in that, The step of determining the interaction interface of the target combustion chamber includes: Acquire interaction scenario information between the target combustion chamber and the outside world; Based on the interaction scenario information, a data interface for transmitting fluid parameters corresponding to the interaction between the target combustion chamber and the external fluid is selected as a fluid interface, and a data interface for transmitting thermal parameters corresponding to the thermal interaction between the target combustion chamber and the external fluid is selected as a thermal interface. The fluid interface and the thermal interface are used as interaction interfaces.

3. The combustion chamber simulation method as described in claim 1, characterized in that, The step of constructing the burner model and cavity model of the target combustion chamber based on the interaction parameters includes: Obtain the parameter input value corresponding to the interaction parameter; Based on the parameter input values, the output heat of the fire radiator assembly is calculated; Based on the output heat and the parameter input values, the stored energy of the cavity and the radiant heat of the flue gas are calculated. The output heat of the burner assembly is used as the parameter output value of the burner assembly; The stored energy and radiant heat of the flue gas in the cavity are used as the parameter output values ​​of the cavity. Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the burner assembly, a burner model of the target combustion chamber is constructed. Based on the mapping relationship between the parameter input values ​​and the parameter output values ​​of the cavity, a cavity model of the target combustion chamber is constructed.

4. The combustion chamber simulation method as described in claim 3, characterized in that, The step of calculating the output heat of the heat exchanger assembly based on the parameter input values ​​includes: The physical heat of the air is calculated based on the input air volume in the parameter input values; Based on the input gas quantity in the parameter input values, the physical heat and chemical heat of the gas are calculated. The sum of the physical heat of the air, the physical heat of the gas, and the chemical heat of the gas is used as the input heat. The flue gas temperature of the output flue gas is calculated based on the input air volume, the input fuel gas volume, and the input heat. Based on the flue gas temperature, the heat carried out by each component in the output flue gas is calculated respectively. The sum of the heat carried out by each component in the output flue gas is taken as the output heat.

5. The combustion chamber simulation method as described in claim 3, characterized in that, The step of calculating the stored energy of the cavity and the radiant heat of the flue gas based on the output heat and the parameter input values ​​includes: The stored energy of the cavity is calculated based on the output heat, the inlet gas parameters and the outlet gas parameters in the parameter input values; The radiant heat of the flue gas in the cavity is calculated based on the flue gas temperature and the cavity wall temperature in the parameter input value.

6. The combustion chamber simulation method according to any one of claims 1 to 5, characterized in that, After the step of building a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface, the burner model, the cavity model, and the medium property model, for performing combustion chamber simulation operations, the combustion chamber simulation method further includes: Obtain target scene information, wherein the target scene information includes the connection relationship between the target combustion chamber and the water heater components; Based on the connection relationship, the combustion chamber twin model is connected to the component twin model of the water heater component to achieve simulation of the target scenario.

7. A combustion chamber simulation device, characterized in that, The combustion chamber simulation device includes: The determination module is used to determine the interaction interface of the target combustion chamber and the interaction parameters corresponding to the interaction interface; The acquisition module is used to acquire a medium property model, wherein the medium property model is used to describe the property changes between the gas and the flue gas. A construction module is used to construct a burner model and a cavity model of the target combustion chamber based on the interaction parameters. The burner model is used to describe the correspondence between the interaction parameters input to the burner assembly of the target combustion chamber and the output of the burner assembly. The cavity model is used to describe the correspondence between the interaction parameters input to the cavity of the target combustion chamber and the output of the cavity. A construction module is used to build a combustion chamber twin model corresponding to the target combustion chamber based on the interaction interface, the burner model, the cavity model and the medium property model, for performing combustion chamber simulation operations.

8. A combustion chamber simulation device, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the combustion chamber simulation method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the combustion chamber simulation method as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the steps of the combustion chamber simulation method as described in any one of claims 1 to 6.

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