A one-dimensional modeling method of transcritical CO2 ejector and related device

Abstract

The application belongs to the technical field of engineering thermophysics, and discloses a one-dimensional modeling method and related device of a transcritical CO2 ejector, and the performance matrix of the transcritical CO2 ejector is obtained; the main flow fluid mass flow of the ejector and the entrainment ratio of the ejector are calculated by using the performance matrix; and the one-dimensional model of the transcritical CO2 ejector is built by using the main flow fluid mass flow of the ejector and the entrainment ratio of the ejector. The application realizes high-precision calculation of the dynamic characteristics of the ejector system, and is of great significance for the design, test and measurement of the transcritical CO2 ejector system.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering thermophysics, and in particular relates to a one-dimensional modeling method for a transcritical CO2 ejector and related devices. Background Art

[0002] As a natural refrigerant with excellent environmental performance, CO2 is a very promising alternative refrigerant. The transcritical CO2 cycle has therefore become a research focus and hotspot. However, due to the high operating pressure of the transcritical cycle, the system has huge throttling losses, resulting in low overall efficiency of the transcritical cycle. Using an ejector instead of a throttle valve in the system can recover expansion work and increase the suction pressure of the compressor, reducing the power consumption of the compressor, which can improve system performance. As a core component of the system, the performance of the ejector plays a vital role in system performance. However, the current one-dimensional simulation of the ejector system only stays at simple cycle calculations and is difficult to simulate the dynamic operating characteristics of the system.

[0003] Kornhauser proposed a one-dimensional steady-state mathematical calculation model for the ejector. This model assumes multiple efficiencies for the ejector to calculate the ejector. However, the calculation accuracy of this model is low and cannot meet the requirements for high-precision calculation of the dynamic characteristics of the ejector system. Existing published literature mainly studies the fluid dynamics calculation of three-dimensional models of ejectors, and there is little research on high-precision one-dimensional models of ejectors.

[0004] In summary, establishing a high-precision one-dimensional modeling method for transcritical CO2 ejectors is of great significance to the design, experiment, testing and simulation of transcritical CO2 ejector systems. Summary of the Invention

[0005] The purpose of the present invention is to propose a one-dimensional modeling method and related devices for a transcritical CO2 ejector, so as to solve the problems that the current one-dimensional simulation of the ejector system only stays at the simple cycle calculation, it is difficult to simulate the dynamic operating characteristics of the system, and there is little research on the high-precision one-dimensional model of the ejector.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A one-dimensional modeling method for a transcritical CO2 ejector, comprising:

[0008] Obtain the performance matrix of transcritical CO2 ejectors;

[0009] The performance matrix is ​​used to calculate the ejector mainstream fluid mass flow rate and the ejector injection ratio;

[0010] A one-dimensional model of the transcritical CO2 ejector is constructed using the ejector mainstream fluid mass flow rate and the ejector injection ratio.

[0011] Preferably, the performance matrix of the transcritical CO2 ejector comprises:

[0012] the density, pressure, enthalpy and mass flow rate of the primary flow inlet of the ejector, the density, pressure, enthalpy and mass flow rate of the motive flow inlet of the ejector, the pressure and mass flow rate of the ejector outlet, the throat diameter in the geometry of the ejector.

[0013] Preferably, the mass flow rate of the primary flow of the transcritical CO2 ejector is calculated according to the performance matrix and the physical mechanism of the transcritical CO2 ejector as follows:

[0014]

[0015] wherein, represents the density of the primary flow inlet, represents the pressure of the primary flow inlet, represents the throat diameter of the ejector, is the critical pressure of CO2, and A, B, C, D, E are coefficients; wherein, the coefficients A, B, C, D, E are calculated by fitting using the least square method.

[0016] Preferably, the entrainment ratio of the transcritical CO2 ejector is calculated according to the performance matrix and the physical mechanism of the transcritical CO2 ejector as follows:

[0017]

[0018] wherein, is the mass flow rate of the motive flow inlet, is the mass flow rate of the primary flow inlet of the ejector, is the density of the primary flow inlet of the ejector, is the pressure of the primary flow inlet of the ejector, is the pressure of the motive flow inlet, is the pressure of the ejector outlet, is the diffusion chamber opening angle, , is a coefficient, , and are functions of the state of the flow fluid and the pressure of the motive flow fluid, and are expressed as:

[0019]

[0020]

[0021] wherein, i takes 1, 2, 3, , , , 、 、 is the coefficient, is the critical pressure of CO2;

[0022] Ejector injection ratio The coefficients in are calculated by the least squares method.

[0023] Preferably, a one-dimensional model of a transcritical CO2 ejector is constructed using the mass flow rate of the mainstream fluid of the ejector and the ejector injection ratio, comprising the following steps:

[0024] S1. Calculate the mass flow rate of the main flow of the ejector based on the density at the main inlet of the ejector, the pressure at the main inlet of the ejector, and the throat diameter of the ejector:

[0025] S2. After obtaining the mass flow rate of the mainstream fluid in the ejector, calculate the ejection ratio based on the pressure at the ejection flow inlet, the ejector pressure, and the ejector diffusion chamber angle:

[0026] S3. Calculate the mass flow rate of the ejection fluid and the mass flow rate of the ejector outlet according to the mass flow rate of the mainstream fluid obtained in step S1 and the ejection ratio obtained in step S2:

[0027] S4. Calculate the ejector outlet enthalpy based on the mass flow rate of the mainstream fluid obtained in step S1, the mass flow rate of the ejector fluid obtained in step S3, the mass flow rate of the ejector outlet, the mainstream inlet enthalpy, and the ejector inlet enthalpy:

[0028] S5. Determine the ejector outlet dryness based on the ejector outlet pressure and the ejector outlet enthalpy obtained in step S4;

[0029] S6. Determine whether the ejector outlet dryness and ejection ratio meet the ejector system stability conditions:

[0030] S7. When the ejector outlet dryness and ejection ratio do not meet the ejector system stability conditions, change the ejector outlet pressure, and then repeat S1-S6 until the ejector outlet dryness and ejection ratio meet the ejector system stability conditions, and obtain the mass flow rate of the ejector mainstream fluid, the mass flow rate of the ejection fluid, the ejection ratio, the ejector outlet back pressure, the outlet enthalpy value and the outlet mass flow rate at this time.

[0031] Preferred:

[0032] In step S3, the mass flow rate of the jet fluid and the mass flow rate at the ejector outlet They are as follows:

[0033]

[0034]

[0035] In step S4, the ejector outlet enthalpy as follows:

[0036]

[0037] In step S5, the ejector outlet dryness as follows:

[0038]

[0039] In step S6, the ejector system stability conditions are as follows:

[0040] in, is the mass flow rate of the mainstream fluid in the ejector, is the ejection ratio, is the ejector mainstream inlet enthalpy, is the enthalpy of the jet inlet, is the ejector outlet back pressure.

[0041] The present invention also provides a one-dimensional modeling system for a transcritical CO2 injector, which is used to implement the above-mentioned one-dimensional modeling method for a transcritical CO2 injector, comprising:

[0042] Data acquisition unit: used to obtain the performance matrix of the transcritical CO2 injector;

[0043] Calculation unit: used for calculating the mass flow rate of the mainstream fluid of the ejector and the ejector injection ratio by using the performance matrix;

[0044] Modeling unit: used to build a one-dimensional model of the transcritical CO2 ejector using the ejector mainstream fluid mass flow rate and the ejector injection ratio.

[0045] The present invention also provides an electronic device, comprising:

[0046] one or more processors;

[0047] a storage device having one or more programs stored thereon;

[0048] When the one or more programs are executed by the one or more processors, the one or more processors are enabled to implement the one-dimensional modeling method for the transcritical CO 2 injector of the present invention as described above.

[0049] The present invention further provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the one-dimensional modeling method of the transcritical CO2 injector of the present invention as described above is implemented.

[0050] The present invention further provides a computer program product, which includes computer instructions, and the computer instructions instruct a computer to execute the one-dimensional modeling method of the transcritical CO2 injector of the present invention as described above.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] This invention uses the ejector's performance matrix as its basis, simplifies and fits the data according to the physical mechanism of the ejector, derives a computational correlation, and constructs a one-dimensional model of the ejector according to the correlation. A computational flow chart for this one-dimensional model of the ejector is also proposed, enabling accurate simulation of the actual flow, inlet and outlet states, and flow rate of the ejector, which is of great significance for the design, testing, and measurement of transcritical CO2 ejector systems. It can be seen that this invention can effectively overcome the current problem that one-dimensional simulation of the ejector system is limited to simple cyclic calculations and has difficulty simulating the dynamic operating characteristics of the system. It also solves the problem that existing models assume multiple efficiencies for the ejector, resulting in low computational accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 1 is a schematic structural diagram of an ejector according to an embodiment of the present invention;

[0054] Figure 2 is a flow chart of a one-dimensional modeling method for an ejector in an embodiment of the present invention;

[0055] Figure 3 4 is a calculation flow chart of the one-dimensional model of the ejector in the embodiment of the present invention.

[0056] Figure 1 In the figure, 1. the main working nozzle of the ejector; 2. the main inlet of the ejector; 3. the pilot flow inlet of the ejector; 4. the mixed fluid outlet of the ejector. DETAILED DESCRIPTION

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0058] See also Figure 1 The transcritical CO2 ejector of the embodiment of the present invention comprises: an intake section, a mixing section and a diffuser section; specifically, it comprises an ejector mainstream working nozzle 1, an ejector mainstream inlet 2, an ejector guide flow inlet 3, and an ejector mixed fluid outlet 4;

[0059] See alsoFigure 2 The one-dimensional modeling method of the transcritical CO2 ejector of the present invention comprises the following steps:

[0060] Step 1: Obtain the ejector performance matrix based on the computational fluid dynamics results;

[0061] Step 2: Simplify and fit the data based on the principles of fluid mechanics and the flow mechanism inside the ejector to obtain the mainstream fluid and ejection ratio The calculation correlation formula of

[0062] Step 3: Build a one-dimensional model of the ejector based on thermodynamic principles, transcritical CO2 ejector system principles, and the obtained correlation equations;

[0063] In order to facilitate public understanding, the technical solution of the present invention is described in detail below with reference to the accompanying drawings:

[0064] The specific steps of the one-dimensional modeling method of the transcritical CO2 injector of the present invention are as follows:

[0065] Step 1: Obtain the performance matrix of the ejector based on the computational fluid dynamics results. The performance matrix is ​​shown in Table 1:

[0066] Table 1

[0067]

[0068] It can be seen that the performance matrix includes the density of the main inlet of the ejector ,pressure , enthalpy and mass flow , the density at the jet inlet ,pressure , enthalpy and mass flow , the pressure at the ejector outlet and mass flow , the throat diameter in the ejector geometry constituted by;

[0069] Furthermore, the performance and state of the ejector mainly depend on the geometric structure, the state of the main inlet fluid, the state of the ejector inlet fluid and the back pressure of the outlet, that is, the working state and performance of the ejector can be determined according to the density of the main inlet. ,pressure , the density of the jet inlet ,pressure and outlet back pressure and ejector outlet pressure Fully expressed and calculated; among them, the most important performance index of the ejector is the ejection ratio , ejection ratio Expressed as:

[0070]

[0071] Where, and are the mass flow rates of the ejector flow and the mainstream flow respectively; therefore, the key to establishing a one-dimensional model of the ejector lies in the ejection ratio and flow rate determination at the main inlet, pilot flow inlet and outlet of the ejector;

[0072] Step 2: Simplify and fit the data based on the obtained performance matrix and the physical mechanism of the ejector to obtain the correlation equation. The specific process is as follows:

[0073] In the second step, the data is simplified and fitted according to the obtained performance matrix and the physical mechanism of the ejector to obtain a correlation process; mainly including the mass flow rate of the mainstream fluid of the ejector Calculation of ejector injection ratio Calculation of

[0074] The mass flow rate of the mainstream fluid in the ejector In the simplification and fitting of the ejector, the main flow of the ejector expands, increases in speed, and decreases in pressure, which is related to the ejector's inlet fluid state and outlet back pressure (i.e., the pressure at the ejector outlet). ) is not important, the mass flow rate of the mainstream fluid Simplified as a function of the mainstream inlet fluid state and the ejector throat size, the mass flow rate of the mainstream fluid is Expressed as:

[0075]

[0076] Where, and represent the density and pressure at the mainstream inlet, respectively. Indicates the throat diameter of the ejector;

[0077] Furthermore, the mainstream mass flow It can be expressed as:

[0078]

[0079] Where, and represent the density and pressure at the mainstream inlet, respectively. represents the throat diameter of the ejector, is the critical pressure of CO2, A, B, C, D, E are coefficients;

[0080] Furthermore, the fitting method uses the least squares method to calculate the correlation coefficient, and the principle is as follows:

[0081]

[0082]

[0083] To make Minimum, then the deviation The partial differential of each unknown coefficient is equal to 0, that is:

[0084]

[0085] Get a linear equation system and solve it to get the unknown coefficients;

[0086] Furthermore, in the ejector injection ratio In the modeling calculation, the mainstream fluid of the ejector is expanded and depressurized to eject the ejection fluid with a higher pressure. The actual ejection process is related to the state of the mainstream fluid, the state of the ejection fluid inlet, and the back pressure of the ejector outlet. Therefore, the ejection ratio is simplified as a function of the mainstream fluid state, the ejection fluid pressure, and the outlet back pressure, expressed as:

[0087]

[0088]

[0089] Where, is the diffusion chamber angle, 、 is the coefficient, 、 and are functions of the flow fluid state and the ejection fluid pressure, and are expressed as:

[0090]

[0091]

[0092] Where i=1, 2, 3; 、 、 、 、 、 is the coefficient;

[0093] Furthermore, the correlation coefficient was calculated according to the least square method;

[0094] Furthermore, the mixed mainstream fluid and the ejected fluid increase in pressure and decrease in speed in the diffuser outflow section, and eventually become the fluid at the ejector outlet. Based on the conservation of mass and energy, the outlet state and mass flow rate can be expressed as:

[0095]

[0096]

[0097] Thus, the enthalpy value at the outlet of the injector can be calculated by energy conservation:

[0098]

[0099] Step three: build a one-dimensional model of the injector according to the obtained correlation formula;

[0100] Please refer to Figure 3 , the further improvement of the present application is that the one-dimensional model of the injector in step three is calculated as follows,

[0101] S1. According to the density , pressure and throat diameter of the injector at the inlet of the main flow , the mass flow of the main flow fluid is calculated:

[0102]

[0103] S2. After obtaining the mass flow of the main flow of the injector, the entrainment ratio is calculated according to the inlet pressure , outlet back pressure and the opening angle of the diffuser chamber of the injector:

[0104]

[0105] S3. According to the mass flow of the main flow fluid obtained in step S1 and the entrainment ratio obtained in step S2 , the mass flow of the entrained flow fluid and the mass flow at the outlet of the injector are calculated:

[0106]

[0107]

[0108] S4. According to the mass flow of the main flow fluid obtained in step S1 , the mass flow of the entrained flow fluid obtained in step S3 , the mass flow at the outlet of the injector , the enthalpy value at the inlet of the main flow and the enthalpy value at the inlet of the entrained flow , the enthalpy value at the outlet of the injector is calculated: ​​​​​​

[0109]

[0110] S5. determining the injector outlet back pressure according to the injector outlet enthalpy value and the injector outlet enthalpy value obtained in step S4 determining the injector outlet dryness :

[0111]

[0112] S6. judging whether the injector outlet dryness and the entrainment ratio satisfy:

[0113]

[0114] if yes, ending the iteration, otherwise, changing the injector outlet back pressure and returning to step S1, and finally iterating until the injector system stability condition is satisfied;

[0115] S7. outputting the mass flow rate of the injector primary fluid , the mass flow rate of the injector secondary fluid , the entrainment ratio , the injector outlet back pressure , the outlet enthalpy value and the outlet mass flow rate , that is, the mass flow rate and fluid state of the two inlets and one outlet of the injector are completely determined.

[0116] Compared with the existing one-dimensional injector model, the above one-dimensional injector model realizes high-precision calculation of the dynamic characteristics of the injector system, and is of great significance to the design, test and test of the transcritical CO2 injector system.

[0117] The present application also provides a one-dimensional modeling system of the transcritical CO2 injector, for realizing the one-dimensional modeling method of the transcritical CO2 injector.

[0118] a data acquisition unit: for acquiring the performance matrix of the transcritical CO2 injector;

[0119] a calculation unit: for calculating the mass flow rate of the injector primary fluid and the entrainment ratio of the injector by using the performance matrix;

[0120] a modeling unit: for building the one-dimensional model of the transcritical CO2 injector by using the mass flow rate of the injector primary fluid and the entrainment ratio of the injector.

[0121] The embodiments of the present application also provide corresponding electronic devices and computer readable storage media, for realizing the schemes provided by the embodiments of the present application.

[0122] The device includes a memory and a processor, the memory is used to store instructions or codes, and the processor is used to execute the instructions or codes so that the device performs the one-dimensional modeling method of the transcritical CO2 injector described in any embodiment of the present application.

[0123] The storage medium stores a computer program, wherein when the computer program is executed by the processor, the one-dimensional modeling method of the transcritical CO2 injector described in any embodiment of the present application is implemented.

[0124] An embodiment of the present invention further provides a computer program product, which includes computer instructions, and the computer instructions instruct a computer to execute the one-dimensional modeling method of the transcritical CO2 injector.

[0125] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0126] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0127] The present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to magnetic disk storage, readable storage media, optical storage, etc.) containing computer-usable program code.

[0128] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams.Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0129] Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A one-dimensional modeling method for a transcritical CO2 ejector, characterized in that: include: Obtain the performance matrix of transcritical CO2 ejectors; The performance matrix is ​​used to calculate the ejector mainstream fluid mass flow rate and the ejector injection ratio; the ejector injection ratio is calculated based on the performance matrix and the physical mechanism of the transcritical CO2 ejector. as follows: in, is the mass flow rate at the jet inlet, is the mass flow rate at the main inlet of the ejector, is the density at the main inlet of the ejector, is the pressure at the main inlet of the ejector, is the pressure at the jet inlet, is the pressure at the ejector outlet, is the diffusion chamber angle, 、 is the coefficient, 、 and are functions of the flow fluid state and the ejection fluid pressure, and are expressed as: in, i Take 1, 2, 3, 、 、 、 、 、 is the coefficient, is the critical pressure of CO2; Ejector injection ratio The coefficients in are calculated by fitting using the least squares method; The one-dimensional model of the transcritical CO2 ejector is constructed using the mass flow rate of the mainstream fluid in the ejector and the ejector injection ratio. The specific steps include the following: S1. Calculate the mass flow rate of the main flow of the ejector based on the density at the main inlet of the ejector, the pressure at the main inlet of the ejector, and the throat diameter of the ejector: S2. After obtaining the mass flow rate of the mainstream fluid in the ejector, calculate the ejection ratio based on the pressure at the ejection flow inlet, the ejector pressure, and the ejector diffusion chamber angle: S3. Calculate the mass flow rate of the ejection fluid and the mass flow rate of the ejector outlet according to the mass flow rate of the mainstream fluid obtained in step S1 and the ejection ratio obtained in step S2: S4. Calculate the ejector outlet enthalpy based on the mass flow rate of the mainstream fluid obtained in step S1, the mass flow rate of the ejector fluid obtained in step S3, the mass flow rate of the ejector outlet, the mainstream inlet enthalpy, and the ejector inlet enthalpy: S5. Determine the ejector outlet dryness based on the ejector outlet pressure and the ejector outlet enthalpy obtained in step S4; S6. Determine whether the ejector outlet dryness and ejection ratio meet the ejector system stability conditions: S7. When the ejector outlet dryness and ejection ratio do not meet the ejector system stability conditions, change the ejector outlet pressure, and then repeat S1-S6 until the ejector outlet dryness and ejection ratio meet the ejector system stability conditions, and obtain the mass flow rate of the ejector mainstream fluid, the mass flow rate of the ejection fluid, the ejection ratio, the ejector outlet back pressure, the outlet enthalpy value and the outlet mass flow rate at this time.

2. A one-dimensional modeling method for a transcritical CO2 ejector according to claim 1, characterized in that: The performance matrix of the transcritical CO2 ejector includes: The density, pressure, enthalpy and mass flow rate of the main flow inlet of the ejector, the density, pressure, enthalpy and mass flow rate of the ejector inlet, the pressure and mass flow rate of the ejector outlet, and the throat diameter in the geometric structure of the ejector.

3. The one-dimensional modeling method of a transcritical CO2 ejector according to claim 2, characterized in that: Calculate the mass flow rate of the mainstream fluid in the injector based on the performance matrix and the physical mechanism of the transcritical CO2 injector as follows: in, represents the density of the mainstream entrance, Represents the pressure of the mainstream entrance, represents the throat diameter of the ejector, is the critical pressure of CO2, and A, B, C, D, and E are coefficients; wherein, the coefficients A, B, C, D, and E are calculated by fitting using the least squares method.

4. The one-dimensional modeling method of a transcritical CO2 ejector according to claim 1, characterized in that: In step S3, the mass flow rate of the jet fluid and the mass flow rate at the ejector outlet They are as follows: In step S4, the ejector outlet enthalpy as follows: In step S5, the ejector outlet dryness as follows: In step S6, the ejector system stability conditions are as follows: in, is the mass flow rate of the mainstream fluid in the ejector, is the ejection ratio, is the ejector mainstream inlet enthalpy, is the enthalpy of the jet inlet, is the ejector outlet back pressure.

5. A one-dimensional modeling system for a transcritical CO2 ejector, for implementing the one-dimensional modeling method for a transcritical CO2 ejector according to any one of claims 1 to 4, characterized in that: include: Data acquisition unit: used to obtain the performance matrix of the transcritical CO2 injector; Calculation unit: used to calculate the mass flow rate of the mainstream fluid of the ejector and the ejector injection ratio using the performance matrix; Modeling unit: used to build a one-dimensional model of the transcritical CO2 ejector using the ejector mainstream fluid mass flow rate and the ejector injection ratio.

6. An electronic device, characterized in that: include: one or more processors; a storage device having one or more programs stored thereon; When the one or more programs are executed by the one or more processors, the one or more processors are enabled to implement the one-dimensional modeling method for a transcritical CO 2 injector according to any one of claims 1 to 4 .

7. A storage medium, characterized in that: A computer program is stored thereon, wherein when the computer program is executed by a processor, the one-dimensional modeling method of the transcritical CO2 injector according to any one of claims 1 to 4 is implemented.

8. A computer program product comprising computer instructions, characterized in that: The computer instructions instruct the computer to execute the one-dimensional modeling method of the transcritical CO2 injector according to any one of claims 1 to 4.

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