Heat storage system design method, device, equipment, medium and product

Abstract

The invention provides a heat storage system design method and device, equipment, a medium and a product, and the method comprises the steps that a second candidate fused salt heat storage material is determined based on thermophysical parameters of a first candidate fused salt heat storage material; on the basis of the second candidate fused salt heat storage material, heat exchange numerical simulation between steam and fused salt is conducted on the first candidate heat exchanger, so that a second candidate heat exchanger is determined; based on the second candidate heat exchanger and the second candidate fused salt heat storage material, a peak regulation experiment is carried out to determine a steam sensible heat parameter and a steam latent heat parameter; and determining a target fused salt heat storage material and a target heat exchanger from the second candidate fused salt heat storage material and the second candidate heat exchanger based on the steam sensible heat parameter and the steam latent heat parameter. According to the method disclosed by the invention, the first candidate molten salt heat storage material and the first candidate heat exchanger are evaluated from multiple perspectives by determining the thermophysical property parameters, simulating the heat exchange numerical value and determining the steam sensible heat parameters and the steam latent heat parameters, so that the target molten salt heat storage material and the target heat exchanger are reasonably selected.

Description

Technical Field

[0001] The present disclosure relates to the field of automatic control, and particularly to a design method, device, equipment, medium and product of a heat storage system. Background Art

[0002] During the operation of a power plant, the design of a heat storage system is a crucial daily task. With the continuous development of power plants, more and more working conditions have emerged. Blindly purchasing heat storage materials and heat exchangers may cause the heat storage system to fail to meet the requirements of various working conditions. Therefore, a method for reasonably designing a heat storage system is needed. Summary of the Invention

[0003] The present disclosure provides a design method, device, equipment, medium and product of a heat storage system to solve the problems in the related art, and to achieve reasonable design of the heat storage system and scientific determination of the target molten salt heat storage material and the target heat exchanger.

[0004] An embodiment of the first aspect of the present disclosure provides a design method of a heat storage system, including: determining a second candidate molten salt heat storage material based on the thermal physical properties of a first candidate molten salt heat storage material; performing a heat transfer numerical simulation between steam and molten salt on a first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger; performing a peak shaving experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine the sensible heat parameter and latent heat parameter of steam; determining the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the sensible heat parameter and latent heat parameter of steam.

[0005] In some embodiments of the present disclosure, determining the second candidate molten salt heat storage material based on the thermal physical properties of the first candidate molten salt heat storage material includes: determining the first weight of the first parameter set of the first candidate molten salt heat storage material based on the analytic hierarchy process, where the first parameter set includes at least one of the following: melting point parameter, specific heat capacity parameter, decomposition temperature parameter, and thermal conductivity parameter; determining the thermal physical properties of the first candidate molten salt heat storage material by weighted summation based on the first parameter set and the first weight; determining the second candidate molten salt heat storage material according to a first preset threshold based on the thermal physical properties.

[0006] In some embodiments of the present disclosure, performing a heat transfer numerical simulation between steam and molten salt on a first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger includes: determining the transportation corrosion prediction parameter and solidification deposition prediction parameter of the first candidate heat exchanger during operation by using the discrete element method; simulating the fluid flow of the first candidate heat exchanger during operation by using the lattice Boltzmann algorithm to determine the heat transfer parameter of the first candidate heat exchanger; determining the second candidate heat exchanger from the first candidate heat exchangers based on the transportation corrosion prediction parameter, solidification deposition prediction parameter, and heat transfer parameter.

[0007] In some embodiments of the present disclosure, based on the second candidate heat exchanger and the second candidate molten salt heat storage material, a peak shaving experiment is carried out to determine the sensible heat parameter and latent heat parameter of steam, including: based on a preset peak shaving rule, performing a heat exchange operation between the second candidate molten salt heat storage material and steam in the second candidate heat exchanger; monitoring the temperature parameter of the steam, the pressure parameter of the steam, and the phase state parameter of the steam during the heat exchange operation; and determining the sensible heat parameter and latent heat parameter of the steam based on the temperature parameter, the pressure parameter, and the phase state parameter.

[0008] In some embodiments of the present disclosure, before adjusting the opening degree of the heat storage system design valve to a preset opening degree to adjust the cooling water temperature when the heat storage system design indication signal is the second heat storage system design indication signal, the method further includes: obtaining the historical detected temperature of the cooling water; determining whether there is an abnormality in the detected temperature of the cooling water based on the historical detected temperature of the cooling water and / or the abnormality threshold of the detected temperature of the cooling water; and generating an abnormality warning signal when there is an abnormality in the detected temperature of the cooling water.

[0009] In some embodiments of the present disclosure, based on the sensible heat parameter and latent heat parameter of steam, determining the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger includes: determining the heat load parameter of the steam based on the sensible heat parameter and latent heat parameter of steam; and determining the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the heat load parameter.

[0010] In some embodiments of the present disclosure, the first candidate heat exchanger at least includes: a direct contact heat exchanger, a heat storage heat exchanger, a wall type heat exchanger, a fixed tube sheet heat exchanger, a floating head heat exchanger, a U-tube heat exchanger, and a stuffing box type heat exchanger.

[0011] An embodiment of the second aspect of the present disclosure provides a heat storage system design device, including: a first determination unit, configured to determine a second candidate molten salt heat storage material based on the thermophysical property parameters of the first candidate molten salt heat storage material; a second determination unit, configured to perform a heat exchange numerical simulation between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger; a simulation unit, configured to perform a peak shaving experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine the sensible heat parameter and latent heat parameter of steam; and a third determination unit, configured to determine the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the sensible heat parameter and latent heat parameter of steam.

[0012] A third aspect embodiment of the present disclosure provides an electronic device, including: a processor and a memory for storing a computer program that can run on the processor, wherein when the processor is used to run the computer program, it executes the method described in the first aspect embodiment of the present disclosure.

[0013] A fourth aspect embodiment of the present disclosure provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to execute the method described in the first aspect embodiment of the present disclosure.

[0014] A fifth aspect embodiment of the present disclosure provides a computer program product, including a computer program that implements the method described in the first aspect embodiment of the present disclosure when executed by a processor.

[0015] In summary, according to a heat storage system design method proposed by the present disclosure, the method includes: determining a second candidate molten salt heat storage material based on the thermal physical property parameters of the first candidate molten salt heat storage material; performing a heat transfer numerical simulation between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger; performing a peak shaving experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine the steam sensible heat parameter and the steam latent heat parameter; and determining a target molten salt heat storage material and a target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the steam sensible heat parameter and the steam latent heat parameter. The method of the present disclosure evaluates the first candidate molten salt heat storage material and the first candidate heat exchanger from multiple perspectives through the determination of thermal physical property parameters, heat transfer numerical simulation, and the determination of steam sensible heat parameter and steam latent heat parameter, so as to reasonably select the target molten salt heat storage material and the target heat exchanger.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure and do not constitute an improper limitation to the present disclosure.

[0018] Figure 1 It is a flowchart of a heat storage system design method provided by an embodiment of the present disclosure;

[0019] Figure 2 It is a flowchart of another heat storage system design method provided by an embodiment of the present disclosure;

[0020] Figure 3 It is a structural schematic diagram of a heat storage system design device provided by an embodiment of the present disclosure;

[0021] Figure 4 A schematic structural diagram of an electronic device provided by an embodiment of the present disclosure. Detailed implementation manners

[0022] The embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present disclosure, but should not be construed as a limitation to the present disclosure.

[0023] During the operation of a power plant, the design of a heat storage system is a crucial daily task. With the continuous development of the power plant, more and more working conditions have emerged. Blindly purchasing heat storage materials and heat exchangers may cause the heat storage system to fail to meet the requirements of various working conditions. Therefore, a method for reasonably designing a heat storage system is needed.

[0024] The present disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 A flowchart of a method for designing a heat storage system provided by an embodiment of the present disclosure. As Figure 1 shown, it includes steps 101-104.

[0026] Step 101: Determine a second candidate molten salt heat storage material based on the thermal physical property parameters of the first candidate molten salt heat storage material.

[0027] In some embodiments, the first candidate molten salt heat storage material may include, but is not limited to, carbonate, chloride, fluoride, and nitrate materials.

[0028] In some embodiments, the thermal physical property parameters of the first candidate molten salt heat storage material may be determined according to a first parameter set of the first candidate molten salt heat storage material, and then the second candidate molten salt heat storage material may be determined from the first candidate molten salt heat storage material according to the thermal physical property parameters.

[0029] In some embodiments, the first parameter set includes at least one of the following: melting point parameter, specific heat capacity parameter, decomposition temperature parameter, and thermal conductivity parameter.

[0030] Step 102: Based on the second candidate molten salt heat storage material, perform a numerical simulation of heat exchange between steam and molten salt on the first candidate heat exchanger to determine a second candidate heat exchanger.

[0031] In some embodiments, the discrete element method may be used to perform a numerical simulation of heat exchange between steam and molten salt on the first candidate heat exchanger, so as to determine the transportation corrosion prediction parameter and solidification deposition prediction parameter during the operation of the first candidate heat exchanger according to the simulation results.

[0032] In some embodiments, the lattice Boltzmann algorithm can also be used to simulate the fluid flow of the first candidate heat exchanger during operation to determine the heat transfer parameters of the first candidate heat exchanger.

[0033] Furthermore, based on the determined transportation corrosion prediction parameters, solidification deposition prediction parameters, and heat transfer parameters, a second candidate heat exchanger is determined from the first candidate heat exchangers.

[0034] Step 103: Based on the second candidate heat exchanger and the second candidate molten salt heat storage material, a peak shaving experiment is conducted to determine the sensible heat parameter and latent heat parameter of the steam.

[0035] In some embodiments, based on a preset peak shaving rule, heat exchange operations can be performed between the second candidate molten salt heat storage material and steam in the second candidate heat exchanger; and the temperature parameter, pressure parameter, and phase state parameter of the steam during the heat exchange operation are monitored; and then based on the temperature parameter, pressure parameter, and phase state parameter, the sensible heat parameter and latent heat parameter of the steam are determined.

[0036] Step 104: Based on the sensible heat parameter and latent heat parameter of the steam, a target molten salt heat storage material and a target heat exchanger are determined from the second candidate molten salt heat storage material and the second candidate heat exchanger.

[0037] In some embodiments, the heat load parameters between different combinations of the second candidate molten salt heat storage material and the second candidate heat exchanger can be determined through the sensible heat parameter and latent heat parameter of the steam; and then according to a preset heat load parameter threshold, the second candidate molten salt heat storage material and the second candidate heat exchanger corresponding to the heat load parameters greater than the preset heat load parameter threshold can be determined as the target molten salt heat storage material and the target heat exchanger.

[0038] In summary, according to the heat storage system design method proposed in the present disclosure, the method includes: determining a second candidate molten salt heat storage material based on the thermophysical properties parameters of the first candidate molten salt heat storage material; performing a heat exchange numerical simulation between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger; performing a peak shaving experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine the sensible heat parameter and latent heat parameter of the steam; and determining a target molten salt heat storage material and a target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the sensible heat parameter and latent heat parameter of the steam. The method of the present disclosure evaluates the first candidate molten salt heat storage material and the first candidate heat exchanger from multiple perspectives through thermophysical properties parameter determination, heat exchange numerical simulation, and sensible heat parameter and latent heat parameter determination, so as to reasonably select the target molten salt heat storage material and the target heat exchanger.

[0039] Figure 2 Further shows a flowchart of a heat storage system design method proposed by the present disclosure. Based onFigure 1 The illustrated embodiments Figure 2 include the following steps.

[0040] Step 201: Based on the analytic hierarchy process, determine the first weight of the first parameter set of the first candidate molten salt heat storage material.

[0041] In some embodiments, the first candidate molten salt heat storage material may include, but is not limited to, carbonate, chloride, fluoride, and nitrate materials.

[0042] In some embodiments, the first parameter set includes at least one of the following: melting point parameter, specific heat capacity parameter, decomposition temperature parameter, and thermal conductivity parameter.

[0043] In some embodiments, since different parameter pairs in the first parameter set have different impacts on the evaluation of the first candidate molten salt heat storage material, the analytic hierarchy process can be used to analyze the parameters in the first parameter set in multiple dimensions, so as to determine the first weight of different parameters in the first parameter set.

[0044] Step 202: Based on the first parameter set and the first weight, determine the thermophysical properties parameters of the first candidate molten salt heat storage material through weighted summation.

[0045] In some embodiments, according to the corresponding relationship between different parameters in the first parameter set and the first weight, the parameters in the first parameter set and the corresponding first weight can be weighted and summed, so as to determine the summation result as the thermophysical properties parameters of the first candidate molten salt heat storage material.

[0046] Step 203: Based on the thermophysical properties parameters and according to the first preset threshold, determine the second candidate molten salt heat storage material.

[0047] In some embodiments, the obtained thermophysical properties parameters of the first candidate molten salt heat storage material can be compared with the first preset threshold, so as to determine the first candidate molten salt heat storage material with thermophysical properties parameters greater than the first preset threshold as the second candidate molten salt heat storage material.

[0048] Step 204: Use the discrete element method to determine the transportation corrosion prediction parameter and solidification deposition prediction parameter of the first candidate heat exchanger during operation.

[0049] In some embodiments, the discrete element method can be used to construct a simulation model to simulate the transportation process of the second candidate molten salt material in the first candidate heat exchanger during operation by using the constructed model, so as to determine the corrosion situation in the first candidate heat exchanger (i.e., the transportation corrosion prediction parameter) and the situation of generating deposits in the first candidate heat exchanger during the operation process (i.e., the solidification deposition prediction parameter) according to the simulation results.

[0050] Step 205: Use the lattice Boltzmann algorithm to simulate the fluid flow in the first candidate heat exchanger during operation to determine the heat transfer parameters of the first candidate heat exchanger.

[0051] In some embodiments, use the lattice Boltzmann algorithm to simulate the fluid flow in the first candidate heat exchanger during operation, so as to predict the heat transfer efficiency (i.e., heat transfer parameters) of the second candidate molten salt material in the first candidate heat exchanger during operation.

[0052] Step 206: Determine the second candidate heat exchanger from the first candidate heat exchangers based on the transport corrosion prediction parameters, solidification deposition prediction parameters, and heat transfer parameters.

[0053] In some embodiments, the transport corrosion prediction parameters, solidification deposition prediction parameters, and heat transfer parameters can be respectively compared with preset thresholds, and the first candidate heat exchanger corresponding to the case where all the above parameters are less than the preset thresholds is determined as the second candidate heat exchanger.

[0054] In some embodiments, it can also be to perform weighted summation on the above parameters, compare the summation value with the preset threshold, and determine the first candidate heat exchanger corresponding to the summation value less than the preset threshold as the second candidate heat exchanger.

[0055] Step 207: Based on the preset peak shaving rule, perform heat exchange operation between the second candidate molten salt heat storage material and steam in the second candidate heat exchanger.

[0056] In some embodiments, in order to test whether the combination between the second candidate heat exchanger and the second candidate molten salt heat storage material can meet the requirements under different working conditions, heat exchange operations can be performed on the combinations between multiple second candidate heat exchangers and the second candidate molten salt heat storage material according to the preset peak shaving rule.

[0057] Step 208: Monitor the temperature parameter, pressure parameter, and phase state parameter of the steam during the heat exchange operation.

[0058] In some embodiments, the temperature parameter, pressure parameter, and phase state parameter of the steam in the heat exchanger can be monitored through sensors deployed on the inner wall of the heat exchanger or monitoring devices deployed outside the heat exchanger, but it is not limited to this, and the present disclosure does not limit the monitoring method.

[0059] Step 209: Determine the sensible heat parameter and latent heat parameter of the steam based on the temperature parameter, pressure parameter, and phase state parameter.

[0060] In some embodiments, the temperature difference of the steam from the start to the end of the heat exchange operation can be determined according to the temperature parameter; the pressure difference of the second candidate heat exchanger from the start to the end of the heat exchange operation can be determined according to the pressure parameter, and whether the phase state of the steam changes (i.e., whether it changes from steam to water or from water to steam) can be determined according to the phase state parameter.

[0061] When it is determined according to the phase state parameter that there is a phase change in the second candidate heat exchanger (i.e., from water to vapor), the latent heat parameter of the steam can be determined according to the change volume of water / steam and the rate of change of the vapor pressure of the steam with temperature (which can be determined from the pressure parameter and the temperature parameter);

[0062] When it is determined according to the phase state parameter that there is no phase change in the second candidate heat exchanger, the sensible heat parameter of the steam can be determined according to the pressure difference and the temperature difference.

[0063] Step 210, based on the sensible heat parameter and the latent heat parameter of the steam, determine the heat load parameter of the steam.

[0064] In some embodiments, the heat load parameter can be divided into a latent heat load parameter and a sensible heat load parameter.

[0065] In some embodiments, the latent heat load parameter can be determined according to the latent heat parameter of the steam, thereby determining the latent heat load parameter.

[0066] In some embodiments, when there is a phase change in the second candidate heat exchanger, the heat absorbed by the steam (or water) per unit time, that is, the latent heat load parameter, can be determined according to the latent heat parameter of the steam.

[0067] In some embodiments, when there is no phase change in the second candidate heat exchanger, the heat released by the steam (or water) per unit time, that is, the sensible heat load parameter, can be determined according to the sensible heat parameter of the steam.

[0068] Step 211, based on the heat load parameter, determine the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger.

[0069] In some embodiments, the heat load parameter can be compared with a preset threshold, and the combination of the second candidate molten salt heat storage material and the second candidate heat exchanger that meets the preset threshold requirements can be determined as the target molten salt heat storage material and the target heat exchanger to realize the design of the heat storage system.

[0070] In summary, the heat storage system design method proposed according to the present disclosure includes: determining the first weight of the first parameter set of the first candidate molten salt heat storage material based on the analytic hierarchy process; determining the thermal physical properties parameters of the first candidate molten salt heat storage material by weighted summation based on the first parameter set and the first weight; determining the second candidate molten salt heat storage material based on the thermal physical properties parameters according to the first preset threshold; using the discrete element method to determine the transportation corrosion prediction parameter and the solidification deposition prediction parameter of the first candidate heat exchanger during operation; using the lattice Boltzmann algorithm to simulate the fluid flow of the first candidate heat exchanger during operation to determine the heat transfer parameter of the first candidate heat exchanger; determining the second candidate heat exchanger from the first candidate heat exchangers based on the transportation corrosion prediction parameter, the solidification deposition prediction parameter, and the heat transfer parameter; performing heat exchange operations between the second candidate molten salt heat storage material and steam in the second candidate heat exchanger based on a preset peak shaving rule; monitoring the temperature parameter, the pressure parameter, and the phase state parameter of the steam during the heat exchange operation; determining the sensible heat parameter and the latent heat parameter of the steam based on the temperature parameter, the pressure parameter, and the phase state parameter; determining the heat load parameter of the steam based on the sensible heat parameter and the latent heat parameter of the steam; determining the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger. The method of the present disclosure evaluates the first candidate molten salt heat storage material and the first candidate heat exchanger from multiple dimensions, thereby determining the target molten salt material and the target heat exchanger, and realizing the scientific determination of the target molten salt material and the target heat exchanger.

[0071] Therefore, the present solution has the following beneficial effects:

[0072] The method of the present disclosure evaluates the first candidate molten salt heat storage material and the first candidate heat exchanger from multiple dimensions, thereby determining the target molten salt material and the target heat exchanger, and realizing the scientific determination of the target molten salt material and the target heat exchanger.

[0073] Figure 3 This is a schematic structural diagram of a heat storage system design device 300 provided by an embodiment of the present disclosure. As Figure 4 shown, the heat storage system design device includes:

[0074] A first determination unit 310, configured to determine a second candidate molten salt heat storage material based on the thermal physical properties parameters of the first candidate molten salt heat storage material;

[0075] A second determination unit 320, configured to perform a numerical simulation of heat exchange between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger;

[0076] A simulation unit 330, configured to perform a peak shaving experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine the sensible heat parameter and the latent heat parameter of the steam;

[0077] A third determination unit 340, configured to determine a target molten salt heat storage material and a target heat exchanger from the second candidate molten salt heat storage materials and the second candidate heat exchangers based on the sensible heat parameter of the steam and the latent heat parameter of the steam.

[0078] In some embodiments of the present disclosure, the first determination unit 310 is further configured to determine a first weight of a first parameter set of the first candidate molten salt heat storage material based on the analytic hierarchy process, where the first parameter set includes at least one of the following: melting point parameter, specific heat capacity parameter, decomposition temperature parameter, and thermal conductivity parameter; determine the thermal physical property parameter of the first candidate molten salt heat storage material through weighted summation based on the first parameter set and the first weight; and determine the second candidate molten salt heat storage material according to a first preset threshold based on the thermal physical property parameter.

[0079] In some embodiments of the present disclosure, the second determination unit 320 uses the discrete element method to determine the corrosion product transportation parameter and the solidification deposition prediction parameter of the first candidate heat exchanger during operation; uses the lattice Boltzmann algorithm to simulate the fluid flow of the first candidate heat exchanger during operation to determine the heat transfer parameter of the first candidate heat exchanger; and determines the second candidate heat exchanger from the first candidate heat exchangers based on the corrosion product transportation parameter, the solidification deposition prediction parameter, and the heat transfer parameter.

[0080] In some embodiments of the present disclosure, the simulation unit 330 is further configured to perform a heat exchange operation on the second candidate molten salt heat storage material and the steam in the second candidate heat exchanger based on a preset peak shaving rule; monitor the temperature parameter of the steam, the pressure parameter of the steam, and the phase state parameter of the steam during the heat exchange operation; and determine the sensible heat parameter of the steam and the latent heat parameter of the steam based on the temperature parameter, the pressure parameter, and the phase state parameter.

[0081] In some embodiments of the present disclosure, the third determination unit 330 is further configured to determine the heat load parameter of the steam based on the sensible heat parameter of the steam and the latent heat parameter of the steam; and determine the target molten salt heat storage material and the target heat exchanger from the second candidate molten salt heat storage materials and the second candidate heat exchangers based on the heat load parameter.

[0082] In some embodiments of the present disclosure, the first candidate heat exchanger includes at least: a direct contact heat exchanger, a heat storage heat exchanger, a shell-and-tube heat exchanger, a fixed tube sheet heat exchanger, a floating head heat exchanger, a U-tube heat exchanger, and a stuffing box heat exchanger.

[0083] In summary, the heat storage system design device proposed according to the present disclosure includes: a first determination unit for determining a second candidate molten salt heat storage material based on the thermophysical property parameters of the first candidate molten salt heat storage material; a second determination unit for performing a heat transfer numerical simulation between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine a second candidate heat exchanger; a simulation unit for performing a peak shaving experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine the sensible heat parameter and latent heat parameter of steam; and a third determination unit for determining a target molten salt heat storage material and a target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the sensible heat parameter and latent heat parameter of steam. The device of the present disclosure evaluates the first candidate molten salt heat storage material and the first candidate heat exchanger from multiple perspectives through the determination of thermophysical property parameters, heat transfer numerical simulation, and the determination of sensible heat parameter and latent heat parameter of steam, so as to reasonably select the target molten salt heat storage material and the target heat exchanger.

[0084] It should be noted that when the heat storage system design device provided in the above embodiment performs heat storage system design, only the above division of each program module is used as an example. In actual application, the above processing can be allocated to different program modules according to needs, that is, the internal structure of the heat storage system design device is divided into different program modules to complete all or part of the above-described processing.

[0085] Since the device provided in the embodiment of the present disclosure corresponds to the methods provided in the above several embodiments, the implementation manners of the methods are also applicable to the device provided in this embodiment and will not be described in detail in this embodiment.

[0086] In the above embodiments provided by the present application, the methods and devices provided by the embodiments of the present application are introduced. To implement the various functions in the methods provided by the embodiments of the present application, the electronic device may include a hardware structure and software modules, and implement the above various functions in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module. A certain function among the above various functions may be executed in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0087] Figure 4 is a schematic diagram of the hardware composition structure of the electronic device provided for the embodiment of the present disclosure. As Figure 4 shown, the electronic device 400 includes at least one processor 402; and a memory 401 communicatively connected to the at least one processor 402; wherein, the memory 401 stores instructions executable by the at least one processor 402, and the instructions are executed by the at least one processor 402 to implement the steps of the heat storage system design method described in the embodiment of the present disclosure; or, the instructions are executed by the at least one processor 402 to implement the steps of the heat storage system design method described in the embodiment of the present disclosure.

[0088] It can be understood that the electronic device further includes a communication interface. Each component in the electronic device is coupled together through a bus system. It can be understood that the bus system is used to realize the connection and communication between these components. In addition to the data bus, the bus system further includes a power bus, a control bus, and a status signal bus.

[0089] It can be understood that the memory 401 can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM), a synchronous static random access memory (SSRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a sync link dynamic random access memory (SLDRAM), a direct rambus random access memory (DRRAM).The memory 401 described in the embodiments of this solution is intended to include, but is not limited to, these and any other suitable types of memory.

[0090] The method disclosed in the above embodiments of the present disclosure can be applied to the processor 402 or implemented by the processor 402. The processor 402 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit in the hardware of the processor 402 or by instructions in the form of software.

[0091] The above-mentioned processor 402 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 402 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this solution. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of this solution, it can be directly embodied as being executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the memory 401. The processor 402 reads the information in the memory 401 and combines its hardware to complete the steps of the foregoing method.

[0092] In an exemplary embodiment, the electronic device can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for executing the foregoing method.

[0093] The embodiments of the present disclosure also provide a non-transitory computer-readable storage medium storing computer instructions, and the computer instructions are used to implement the steps of the heat storage system design method described in the embodiments of this solution when the computer instructions are executed.

[0094] It should be noted that the terms "first", "second", etc. in the description of the present disclosure, the claims and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present solution. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0096] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present solution includes additional implementations, where the functions can be executed in a way that is not shown or discussed in the order, including in a substantially simultaneous manner or in the reverse order according to the functions involved, which should be understood by those skilled in the technical field to which the embodiments of the present solution belong.

[0097] The logic and / or steps represented in the flowchart or otherwise described herein can, for example, be considered as a definable sequence list of executable instructions for implementing logical functions, which can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processing module, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or more wirings (control method), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, a computer-readable medium can even be paper or other suitable media on which a program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other appropriate processing as necessary, and then stored in a computer memory.

[0098] It should be understood that each part of the implementation of the present solution can be implemented by hardware, software, firmware, or a combination thereof. In the above implementation, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another implementation, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0099] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium, and when the program is executed, it includes one or a combination of the steps of the method embodiments.

[0100] In addition, each functional unit in the embodiments of the present solution can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disc, etc.

[0101] Although the embodiments of the present solution have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present solution. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present solution.

Claims

1. A method for designing a heat storage system, characterized in that: The method comprises: Determining a second candidate molten salt heat storage material based on the thermophysical property parameters of the first candidate molten salt heat storage material; Based on the second candidate molten salt heat storage material, performing a numerical simulation of heat exchange between steam and molten salt on the first candidate heat exchanger to determine the second candidate heat exchanger; Based on the second candidate heat exchanger and the second candidate molten salt heat storage material, a peak load regulation experiment is performed to determine steam sensible heat parameters and steam latent heat parameters; Based on the steam sensible heat parameter and the steam latent heat parameter, a target molten salt heat storage material and a target heat exchanger are determined from the second candidate molten salt heat storage material and the second candidate heat exchanger.

2. The method according to claim 1, characterized in that The determining of the second candidate molten salt heat storage material based on the thermophysical properties of the first candidate molten salt heat storage material comprises: Determine, based on the analytic hierarchy process, a first weight of a first parameter set of the first candidate molten salt thermal storage material, the first parameter set comprising at least one of the following: a melting point parameter, a specific heat capacity parameter, a decomposition temperature parameter, and a thermal conductivity parameter; Determining the thermophysical property parameters of the first candidate molten salt heat storage material by weighted summation based on the first parameter set and the first weight; Based on the thermophysical property parameters and according to a first preset threshold, the second candidate molten salt heat storage material is determined.

3. The method according to claim 1, characterized in that The step of performing a numerical simulation of heat exchange between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine the second candidate heat exchanger includes: Determine, by using a discrete element method, transport corrosion prediction parameters and solidification deposition prediction parameters of the first candidate heat exchanger during operation; Using a lattice Boltzmann algorithm, simulating the fluid flow of the first candidate heat exchanger during operation to determine heat transfer parameters of the first candidate heat exchanger; The second candidate heat exchanger is determined from the first candidate heat exchangers based on the transportation corrosion prediction parameter, the solidification deposition prediction parameter, and the heat transfer parameter.

4. The method according to claim 1, characterized in that: The step of performing a peak load regulation experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine steam sensible heat parameters and steam latent heat parameters includes: Based on a preset peak load regulation rule, performing heat exchange operation on the second candidate molten salt heat storage material and steam in the second candidate heat exchanger; monitoring a temperature parameter of the steam, a pressure parameter of the steam, and a phase parameter of the steam during the heat exchange operation; The steam sensible heat parameter and the steam latent heat parameter are determined based on the temperature parameter, the pressure parameter and the phase state parameter.

5. The method according to claim 1, characterized in that The determining of a target molten salt heat storage material and a target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the steam sensible heat parameter and the steam latent heat parameter comprises: Determining a heat load parameter of the steam based on the steam sensible heat parameter and the steam latent heat parameter; Based on the heat load parameter, a target molten salt heat storage material and a target heat exchanger are determined from the second candidate molten salt heat storage material and the second candidate heat exchanger.

6. The method according to claim 1, characterized in that The first candidate heat exchanger includes at least: a direct contact heat exchanger, an energy storage heat exchanger, a partition heat exchanger, a fixed tube sheet heat exchanger, a floating head heat exchanger, a U-tube heat exchanger and a packing box heat exchanger.

7. A heat storage system design device, characterized in that: The device comprises: A first determining unit, configured to determine a second candidate molten salt heat storage material based on the thermophysical property parameters of the first candidate molten salt heat storage material; A second determining unit is used to perform a numerical simulation of heat exchange between steam and molten salt on the first candidate heat exchanger based on the second candidate molten salt heat storage material to determine the second candidate heat exchanger; A simulation unit, used for performing a peak load regulation experiment based on the second candidate heat exchanger and the second candidate molten salt heat storage material to determine steam sensible heat parameters and steam latent heat parameters; The third determining unit is used to determine a target molten salt heat storage material and a target heat exchanger from the second candidate molten salt heat storage material and the second candidate heat exchanger based on the steam sensible heat parameter and the steam latent heat parameter.

8. An electronic device, characterized in that: include: A processor and a memory for storing a computer program that can be run on the processor, wherein the processor executes the method according to any one of claims 1 to 6 when running the computer program.

9. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-6.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 6.

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