Ground source heat pump system feasibility evaluation method, device, equipment and medium

Abstract

The invention provides a feasibility evaluation method, device, equipment and medium for a ground source heat pump system, and relates to the technical field of heat pumps, the method comprises the following steps: simulating hourly thermal load according to thermal characteristic parameters of a target building and hourly environmental meteorological data in a preset time period; temperature field simulation is conducted on the ground source heat pump system according to the operation parameters corresponding to the ground source heat pump system, and a target temperature field meeting preset matching conditions with the hourly heat load is obtained; the hourly heat pump power consumption is obtained based on the target temperature field and the corresponding hourly heat load, and the system operation cost is determined based on the hourly heat pump power consumption; and generating a feasibility evaluation result of the ground source heat pump system based on the system operation cost. According to the method, long-term operation feasibility evaluation deviation caused by static load hypothesis can be avoided, the adaptability of system operation cost estimation to dynamic load requirements during actual system operation is improved, the accuracy and reference of the system operation cost are ensured, and thus the reliability of a feasibility evaluation result is ensured.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and more specifically, to a method, apparatus, equipment, and medium for feasibility evaluation of a ground source heat pump system. Background Technology

[0002] In the context of current energy transition and green development, the deep-buried pipe heat exchanger (DBHE) coupled with a heat pump heating system has attracted much attention due to its high energy density and low carbon footprint. It extracts geothermal energy from deep underground through a coaxial pipe structure and converts this energy using a heat pump unit to provide heating or cooling for buildings. Compared to traditional air conditioning and heating systems, it offers significant advantages such as lower energy consumption, stable operation, and environmental friendliness.

[0003] Feasibility assessment is a crucial step in the promotion and application of ground source heat pump systems, directly impacting investment decisions, scheme optimization, and market acceptance. However, current feasibility assessment methods for ground source heat pump systems still have significant limitations, and the reliability of the assessment results is difficult to guarantee, hindering the scientific promotion and further development of ground source heat pump systems. Summary of the Invention

[0004] The problem addressed by this invention is how to improve the reliability of feasibility evaluation results for ground source heat pump systems.

[0005] To address the above problems, this invention provides a feasibility evaluation method for a ground source heat pump system, comprising: Based on the obtained thermal characteristic parameters of the target building and the hourly environmental meteorological data within the preset time period, the hourly heat load of the target building within the preset time period is simulated. Based on the obtained operating parameters of the ground source heat pump system, a temperature field simulation is performed on the ground source heat pump system to obtain a target temperature field that meets the preset matching conditions with the hourly heat load. The hourly heat pump power consumption of the ground source heat pump system is obtained based on the target temperature field and the corresponding hourly heat load, and the system operating cost within the preset time period is determined based on the hourly heat pump power consumption. The feasibility evaluation results of the ground source heat pump system are generated based on the system operating costs.

[0006] Optionally, the step of simulating the temperature field of the ground source heat pump system based on the obtained operating parameters to obtain a target temperature field that meets the preset matching conditions with the hourly heat load includes: The simulation step includes inputting a preset initial heat pump inlet water temperature and the operating parameters into a pre-constructed coupling model to simulate the current temperature field of the ground source heat pump system; wherein, the coupling model is constructed based on the heat transfer relationships pre-associated with the ground source heat pump system; The acquisition step includes acquiring the heat pump inlet water temperature and the heat pump outlet water temperature from the current temperature field, and determining the hourly heat extraction based on the heat pump inlet water temperature and the heat pump outlet water temperature. When the difference between the hourly heat load and the hourly heat extraction is less than a preset threshold, the preset matching condition is met, and the current temperature field is taken as the target temperature field.

[0007] Optionally, after the acquisition step, the method further includes: When the difference between the hourly heat load and the hourly heat extraction is greater than or equal to the preset threshold, the initial heat pump inlet water temperature is increased according to the preset temperature gradient, and the simulation step is returned until the target temperature field is obtained.

[0008] Optionally, the step of obtaining the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, and determining the system operating cost within the preset time period based on the hourly heat pump power consumption, includes: The performance coefficient of the ground source heat pump system is determined based on the heat pump inlet water temperature corresponding to the target temperature field, and the hourly power consumption of the ground source heat pump system is obtained based on the performance coefficient and the corresponding hourly heat extraction. The system operating cost is obtained based on the hourly power consumption and the peak-valley electricity price corresponding to the target building.

[0009] Optionally, generating the feasibility evaluation result of the ground source heat pump system based on the system operating cost includes: Obtain the non-system operating costs corresponding to the ground source heat pump system, and obtain the total system cost based on the non-system operating costs and the system operating costs; wherein, the non-system operating costs include at least one of system construction costs, system maintenance costs, and system decommissioning costs; When the total cost of the system is greater than a first preset cost threshold, and / or when the maximum value of the hourly heat pump power consumption is greater than a preset power consumption threshold, the feasibility evaluation result is that the target building is not suitable for arranging the ground source heat pump system; wherein, the preset power consumption threshold is determined based on the power grid supply threshold corresponding to the target building.

[0010] Optionally, the hourly environmental meteorological data includes ambient temperature; after obtaining the total system cost based on the non-system operating cost and the system operating cost, the method further includes: When the total cost of the system is less than or equal to the second preset cost threshold, the cumulative duration corresponding to the ambient temperature being less than the preset low temperature threshold is obtained, and it is determined whether the cumulative duration is less than the preset duration; wherein, the second preset cost threshold is less than the first preset cost threshold; If so, the feasibility evaluation result indicates that the ground source heat pump system is suitable for the target building; If not, the feasibility evaluation result is that after adjusting the thermal characteristic parameters of the target building, the target building is suitable for arranging the ground source heat pump system; wherein, the thermal characteristic parameter adjustment operation includes increasing the building envelope of the target building.

[0011] Optionally, after obtaining the total system cost based on the non-system operating cost and the system operating cost, the method further includes: When the total cost of the system is less than or equal to the first preset cost threshold and greater than the second preset cost threshold, the feasibility evaluation result is that the target building is suitable for arranging a hybrid energy system; wherein, the hybrid energy system includes the ground source heat pump system and other heating systems.

[0012] In this invention, by acquiring the thermal performance parameters of the target building and hourly environmental meteorological data within a preset time period, it is beneficial to accurately grasp the heat transfer performance of the target building itself, such as its thermal insulation, as well as the dynamic impact of the external environment on the building's heat load. The combination of these two factors allows the simulated hourly heat load to take into account the combined effects of changes in the external environment and the building's own characteristics on heat demand at different times, thus accurately reflecting the actual dynamic heat demand of the target building at different moments. This invention simulates the temperature field of the ground source heat pump system by acquiring operating parameters that determine the cooling and heating capabilities of the system, thereby finding a target temperature field that matches the hourly heat load (i.e., meets preset matching conditions), ensuring that the temperature adjustment of the simulated system at different times adapts to the actual dynamic heat demand of the building. The temperature field and heat load of the ground source heat pump system directly affect the system's workload, thus determining its power consumption. This invention obtains the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, comprehensively simulating the energy consumption of the system at different times during long-term operation, thereby ensuring the accuracy of the system's operating costs. This invention enables a clear understanding of the operating costs of a ground source heat pump system during system feasibility evaluation, providing crucial reference for generating evaluation results. Therefore, this invention determines the system operating cost of a ground source heat pump system over a preset time period based on hourly heat pump power consumption, and ultimately generates the feasibility evaluation result of the ground source heat pump system based on this operating cost. Compared to methods that roughly estimate system operating costs through simple estimations of soil and rock thermal properties and simplified energy balance analysis, this invention avoids long-term operational feasibility assessment biases caused by static load assumptions, improves the adaptability of system operating cost estimates to the dynamic load demands of actual system operation, ensures the accuracy and reference value of system operating costs, and thus ensures the reliability of the final feasibility evaluation result of the ground source heat pump system based on system operating costs.

[0013] The present invention also provides a feasibility evaluation device for a ground source heat pump system, comprising: The first simulation module is used to simulate the hourly heat load of the target building during the preset time period based on the acquired thermal characteristic parameters of the target building and the hourly environmental meteorological data during the preset time period. The second simulation module is used to simulate the temperature field of the ground source heat pump system based on the obtained operating parameters of the ground source heat pump system, and obtain the target temperature field that meets the preset matching conditions with the hourly heat load. The cost determination module is used to obtain the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, and to determine the system operating cost within the preset time period based on the hourly heat pump power consumption. The result generation module is used to generate a feasibility evaluation result of the ground source heat pump system based on the system operating cost.

[0014] The feasibility evaluation device and method for ground source heat pump systems provided by this invention have essentially the same advantages as existing technologies, and will not be elaborated further here.

[0015] The present invention also provides an electronic device, including a memory and a processor; The memory is used to store computer programs; The processor is used to implement the feasibility evaluation method for a ground source heat pump system as described above when executing the computer program.

[0016] The electronic device provided by this invention and the feasibility evaluation method for the ground source heat pump system have essentially the same advantages as the prior art, and will not be repeated here.

[0017] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the feasibility evaluation method for a ground source heat pump system as described above.

[0018] The advantages of the computer-readable storage medium provided by this invention and the feasibility evaluation method for the ground source heat pump system compared to the prior art are basically the same, and will not be repeated here. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a ground source heat pump system according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the feasibility evaluation method for a ground source heat pump system according to an embodiment of the present invention. Figure 3 This is a schematic diagram of hourly heat load simulation of target buildings in different regions within a preset time period, according to an embodiment of the present invention. Figure 4 This is a schematic diagram simulating the heat pump inlet water temperature and heat pump outlet water temperature of the ground source heat pump system corresponding to the target building in different areas of the present invention within a preset time period. Figure 5 This is a schematic diagram simulating the hourly power consumption of the ground source heat pump system corresponding to the target building in different areas of the present invention within a preset time period. Figure 6 This is a schematic diagram of the structure of the feasibility evaluation device for a ground source heat pump system according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0021] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0022] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0023] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0024] A common ground source heat pump system is a deep-medium-depth buried pipe heat exchanger (DBHE) coupled heat pump system, which extracts geothermal energy from a depth of 2000–3000 meters underground through a coaxial sleeve structure. For example... Figure 1 The structural diagram of the ground source heat pump system is shown below. Figure 2In this diagram, J represents the building side, G represents the soil and rock mass, HP represents the heat pump unit, and BHE represents the buried pipe. A ground source heat pump system can provide heating or cooling to a target building. This embodiment will use heating with a ground source heat pump system as an example to introduce a feasibility evaluation method. The working process of a ground source heat pump system for heating is as follows: The circulating working fluid (such as water) exchanges heat with the underground soil and rock mass in the buried pipe, absorbs heat, and is then input into the heat pump unit. The heat is transferred to the refrigerant in the evaporator of the heat pump unit and then flows back underground. Inside the heat pump unit, the refrigerant absorbs heat and evaporates in the evaporator. The compressor then compresses it into a high-temperature, high-pressure gas, which then releases heat to the circulating water on the building side in the condenser. The heated circulating water is then delivered to the building side to meet the heating demand.

[0025] However, existing ground source heat pump systems lack in-depth feasibility evaluation studies during the application and promotion phase. They typically rely solely on estimations of the thermal properties of the soil and rock mass and simplified energy balance analyses to roughly estimate operating costs and thus determine economic benefits. This method has significant limitations, failing to ensure the reliability of evaluation results and making it difficult to guarantee the long-term applicability of ground source heat pump systems in complex real-world environments. This hinders the scientific promotion and further development of ground source heat pump systems.

[0026] To address the problems existing in the aforementioned related technologies, this embodiment provides a method, apparatus, equipment, and medium for feasibility evaluation of a ground source heat pump system.

[0027] like Figure 2 As shown in the figure, an embodiment of the present invention provides a feasibility evaluation method for a ground source heat pump system, which includes the following steps: S1: Based on the obtained thermal characteristic parameters of the target building and the hourly environmental meteorological data within the preset time period, simulate the hourly heat load of the target building within the preset time period.

[0028] Specifically, in this embodiment, the target building refers to a building requiring a feasibility assessment for the installation of a ground source heat pump system. The thermal characteristic parameters corresponding to the target building represent parameters describing its thermal performance, such as heat transfer and insulation. For example, the building envelope heat transfer coefficient, window-to-wall ratio, and building shape coefficient reflect the building's thermal performance characteristics and play a crucial role in simulating the hourly heat load of the target building. The hourly environmental meteorological data within the preset time period referred to in this embodiment represent the hourly environmental meteorological information of the area where the target building is located, such as outdoor temperature, humidity, solar radiation intensity, and wind speed. These data change over time, directly affecting the heat exchange between the target building and the outside environment, and are important input conditions for simulating the hourly heat load of the target building.

[0029] In one embodiment, after obtaining the thermal characteristic parameters of the target building and the hourly environmental meteorological data within a preset time period, these parameters can be input into existing environmental simulation software (such as Design Summer Time, DEST) to perform heat load simulation and obtain the hourly heat load of the target building corresponding to the hourly environmental meteorological data within the preset time period (such as one year). For example, a schematic diagram of the hourly heat load simulation of target buildings in different regions within a preset time period is shown below. Figure 3 As shown, Figure 3 In the diagram, B1 represents the hourly heat load of the target building in city B within one year, L1 represents the hourly heat load of the target building in city L within one year, and X1 represents the hourly heat load of the target building in city X within one year.

[0030] S2: Based on the obtained operating parameters of the ground source heat pump system, perform temperature field simulation on the ground source heat pump system to obtain the target temperature field that meets the preset matching conditions with the hourly heat load.

[0031] Specifically, in this embodiment, the ground source heat pump system refers to a system intended to be installed at the target building. The operating parameters of the ground source heat pump system may include operating conditions (such as the geothermal parameters of the area where the ground source heat pump system is located) and system design parameters (such as well depth, pipe diameter, pipe wall thickness, circulation flow rate, etc.). In this embodiment, preset matching conditions can be set in advance. For example, preset matching conditions may include the difference between the hourly heat harvesting and the hourly heat load determined based on the target temperature field being less than a preset difference.

[0032] In one embodiment, after obtaining the operating parameters of the ground source heat pump system, existing ground source heat pump system simulation software (such as Ground Heat Exchanger, GHE) can be used to simulate the temperature field of the ground source heat pump system. After obtaining the temperature field, the temperature difference between the heat pump inlet and outlet water can be determined, and then the hourly heat recovery can be determined by combining this with the flow rate of the circulating working fluid (such as water). For example, the hourly heat recovery can be equal to the product of the heat pump outlet water temperature difference, the water flow rate, and the specific heat capacity of water. Based on this, by continuously adjusting the operating parameters of the heat pump system (such as the heat pump inlet water temperature), the difference between the hourly heat recovery determined based on the temperature field and the hourly heat load can be made less than a preset difference (such as 1% of the hourly heat load), thereby obtaining a target temperature field that meets the preset matching conditions with the hourly heat load.

[0033] S3: Based on the target temperature field and the corresponding hourly heat load, obtain the hourly heat pump power consumption of the ground source heat pump system, and determine the system operating cost within the preset time period based on the hourly heat pump power consumption.

[0034] Specifically, in this embodiment, the hourly heat pump power consumption refers to the power consumption of the ground source heat pump system per hour within a preset time period. It reflects the electrical energy consumed by the ground source heat pump system to meet the building's heat demand (i.e., hourly heat load). For example, in a heating scenario, it mainly refers to the electrical energy consumed when the compressor performs work to raise the heat from a low temperature to a high temperature. The hourly heat pump power consumption corresponding to the ground source heat pump system can be obtained based on the target temperature field and the corresponding hourly heat load. For example, the coefficient of performance (COP) of the ground source heat pump system is a key parameter reflecting the relationship between heat output (i.e., hourly heat load) and electrical energy input (i.e., hourly power consumption). The performance of the heat pump unit is related to the heat pump inlet water temperature (i.e., the ground source side outlet water temperature). The heat pump inlet water temperature can be obtained from the target temperature field, and the COP of the ground source heat pump system can be obtained based on the preset linear relationship between the heat pump inlet water temperature and the COP. Based on this, since the target temperature field and the hourly heat load meet the preset matching conditions, the hourly heat extraction can be approximated as the hourly heat load. Then, based on the ratio of the hourly heat load to the coefficient of performance of the heat pump, the hourly heat pump power consumption corresponding to the ground source heat pump system can be determined.

[0035] In one embodiment, after obtaining the hourly heat pump power consumption corresponding to the ground source heat pump system, the hourly electricity price corresponding to the area where the target building is located can be obtained, and the hourly operating cost can be obtained by multiplying the hourly heat pump power consumption by the hourly electricity price. Based on this, the system operating cost corresponding to the ground source heat pump system for a preset time period can be obtained based on the cumulative value of all hourly operating costs.

[0036] S4: Generate the feasibility evaluation results of the ground source heat pump system based on the system operating cost.

[0037] Specifically, in this embodiment, the feasibility evaluation result refers to the evaluation of the feasibility of installing a ground source heat pump system at the target building. For example, the operating cost required for the target building to use other energy systems for heating and cooling within a preset time period (such as the operating cost of an air conditioning system) can be obtained and used as a reference cost. When the system operating cost is greater than or equal to the reference cost, or when the system operating cost is less than the reference cost and the difference between the two is less than a preset percentage of the reference cost (such as 5%), it indicates that the ground source heat pump system cannot bring significant energy-saving effects compared to traditional energy systems, or even has higher operating costs than traditional energy systems. In this case, the feasibility evaluation result of the ground source heat pump system can be: the target building is not suitable for installing a ground source heat pump system. Conversely, when the system operating cost is less than the reference cost and the difference between the two is greater than a preset percentage of the reference cost, it can be considered that the ground source heat pump system can bring relatively significant energy-saving effects compared to traditional energy systems. In this case, the feasibility evaluation result of the ground source heat pump system can be: the target building is suitable for installing a ground source heat pump system.

[0038] In this embodiment, by acquiring the thermal performance parameters of the target building and hourly environmental meteorological data within a preset time period, it is beneficial to accurately grasp the heat transfer performance of the target building itself, such as its thermal insulation, as well as the dynamic impact of the external environment on the building's heat load. The combination of these two factors allows the simulated hourly heat load to take into account the combined effects of changes in the external environment and the building's own characteristics on heat demand at different times, thus accurately reflecting the actual dynamic heat demand of the target building at different moments. This embodiment also uses operating parameters that determine the cooling and heating capabilities of the ground source heat pump system to simulate the temperature field of the ground source heat pump system, thereby finding a target temperature field that matches the hourly heat load (i.e., meets preset matching conditions), ensuring that the temperature adjustment of the simulated system at different times adapts to the actual dynamic heat demand of the building. The temperature field and heat load of the ground source heat pump system directly affect the system's workload, thus determining its power consumption. This embodiment obtains the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, comprehensively simulating the energy consumption of the system at different times during long-term operation, thereby ensuring the accuracy of the system's operating costs. This allows for a clear understanding of the operating costs of the ground source heat pump system during system feasibility evaluation, providing crucial reference for generating evaluation results. Therefore, this embodiment determines the system operating cost of the ground source heat pump system within a preset time period based on hourly heat pump power consumption, and ultimately generates the feasibility evaluation result of the ground source heat pump system based on the system operating cost. Compared to methods that roughly estimate the system operating cost through simple estimation of soil and rock thermal properties and simplified energy balance analysis, this embodiment avoids long-term operational feasibility assessment biases caused by static load assumptions, improves the adaptability of the system operating cost estimate to the dynamic load demands of actual system operation, ensures the accuracy and reference value of the system operating cost, and thus ensures the reliability of the final feasibility evaluation result of the ground source heat pump system based on the system operating cost.

[0039] Optionally, based on the obtained operating parameters of the ground source heat pump system, a temperature field simulation is performed on the ground source heat pump system to obtain a target temperature field that meets preset matching conditions with the hourly heat load, including: The simulation steps include inputting the preset initial heat pump inlet water temperature and operating parameters into a pre-built coupled model to simulate the current temperature field of the ground source heat pump system; wherein, the coupled model is built based on the heat transfer relationships pre-associated with the ground source heat pump system; The acquisition steps include acquiring the heat pump inlet water temperature and heat pump outlet water temperature from the current temperature field, and determining the hourly heat extraction based on the heat pump inlet water temperature and heat pump outlet water temperature. When the difference between hourly heat load and hourly heat extraction is less than a preset threshold, the preset matching condition is met, and the current temperature field is used as the target temperature field.

[0040] Optionally, after the acquisition step, the following steps are also included: When the difference between hourly heat load and hourly heat extraction is greater than or equal to a preset threshold, the initial heat pump inlet water temperature is increased according to the preset temperature gradient, and the simulation process is returned until the target temperature field is obtained.

[0041] Specifically, the coupling model referred to in this embodiment is pre-constructed based on the pre-associated heat transfer relationship of the ground source heat pump system. The pre-associated heat transfer relationship of the ground source heat pump system may include the heat exchange relationship between the circulating fluid in the buried pipe and the heat exchange relationship between the rock and soil and the grouting layer. It can simulate and analyze the underground heat transfer process and the heat transfer dynamics behavior in the annular grouting layer. The two can construct the coupling model of the ground source heat pump system.

[0042] In one embodiment, the heat exchange relationship between the circulating fluids within the buried pipe satisfies: ; ; Boundary conditions: ; ; The heat exchange relationship between the soil / rock mass and the grouting layer satisfies: ; ; Boundary conditions: ; ; in, This indicates the density of the circulating fluid (in this embodiment, the density of water). This indicates the specific heat capacity of the circulating fluid. This indicates the temperature of the grouting layer (i.e., the temperature of the backfill material). Indicates the velocity of the fluid inside the tube. Indicates the annular temperature of the inner tube. Represents the fluid dispersion tensor. Indicates the heat source and sink of the inner tube. Indicates the annular temperature of the outer tube. Indicates the fluid velocity in the outer pipe. Represents the diffusion tensor of the outer tube. Indicates the heat source and sink of the inner tube. This represents the heat flux density between the heat exchange interface of the inner tube and the annulus. This indicates the heat transfer coefficient between the inner and outer tubes. This represents the heat flux density between the heat exchange interface of the annulus and the grouting layer. This represents the heat transfer coefficient between the outer pipe and the grouting layer. Indicates the density of the grout layer. This indicates the specific heat capacity of the grouting layer. Indicates the thermal conductivity of the grouting layer. This indicates the heat source and sink of the grouting layer. Indicates the temperature of the rock and soil mass. Represents the dispersion tensor of rock and soil mass. Indicates the heat source and sink of the rock and soil mass. This indicates the heat flux density between the heat exchange interface of the outer pipe and the grouting layer. This represents the heat transfer coefficient between the grouting layer and the soil / rock mass. This represents the heat flux density between the heat exchange interface of the soil / rock mass and the grouting layer. In this embodiment, the annulus refers to the space between the outer and inner pipes. The heat transfer process includes heat conduction between the inner and outer pipe walls, convective heat transfer between the circulating fluid inside the inner pipe and the circulating fluid inside the annulus, and heat conduction within the grouting layer. The heat exchange interfaces include the heat exchange interface between the inner pipe and the annulus, the heat exchange interface between the annulus and the grouting layer, and the heat exchange interface between the soil / rock mass and the grouting layer.

[0043] In one embodiment, operating parameters may include soil and rock temperature, grouting layer temperature, fluid dispersion tensor, and circulating fluid density. These operating parameters can be obtained through on-site monitoring or from reference geological data. A pre-set initial heat pump inlet water temperature (e.g., 4°C) and the above operating parameters can be used as inputs to a coupled model, and Picard iteration can be used to simulate the current temperature field of the ground source heat pump system (including the inlet and outlet water temperatures corresponding to the heat pump unit). Based on this, the heat pump inlet water temperature and heat pump outlet water temperature can be obtained from the current temperature field. For example, temperature field simulation can be performed on the heat pump system corresponding to target buildings in different regions to obtain the target temperature field corresponding to the hourly heat load, and the corresponding heat pump inlet and outlet water temperatures can be obtained from the target temperature field. A schematic diagram of the simulation of heat pump inlet water temperature and heat pump outlet water temperature of the ground source heat pump system corresponding to target buildings in different regions within a preset time period (e.g., ten years) is shown below. Figure 4 As shown, Figure 4 In the diagram, B2 represents the heat pump inlet water temperature and heat pump outlet water temperature of the ground source heat pump system corresponding to the target building in city B within ten years; L2 represents the heat pump inlet water temperature and heat pump outlet water temperature of the ground source heat pump system corresponding to the target building in city L within ten years; and X2 represents the heat pump inlet water temperature and heat pump outlet water temperature of the ground source heat pump system corresponding to the target building in city X within ten years.

[0044] In one embodiment, after obtaining the heat pump inlet water temperature and heat pump outlet water temperature from the current temperature field, the hourly heat extraction can be determined based on these temperatures. In this embodiment, the hourly heat extraction satisfies the following: ; Where Qd represents the hourly heat taken, c represents the specific heat capacity of water, and M represents the mass of water entering the heat pump inlet (which can be determined based on the hourly water flow rate entering the heat pump inlet). Indicates the outlet water temperature of the heat pump. This indicates the inlet water temperature of the heat pump.

[0045] After determining the hourly heat extraction, the difference between the hourly heat load and the hourly heat extraction can be obtained, and it can be determined whether this difference is less than a preset threshold (e.g., one-thousandth of the hourly heat load). If so, it means that the hourly heat extraction and the hourly heat load are relatively close, satisfying the preset matching condition. At this time, the simulated current temperature field can meet the heating demand of the target building, and the current temperature field can be used as the target temperature field. If not, it means that the hourly heat extraction is less than the hourly heat load and the difference between the two is large, making it difficult to meet the heating demand of the target building, and the preset matching condition is not met. At this time, the initial heat pump inlet water temperature is increased according to the preset temperature gradient (e.g., 0.01℃) (i.e., the new initial heat pump inlet water temperature is 4.01℃), and the simulation steps are returned until the target temperature field is obtained.

[0046] In this embodiment, the pre-associated heat transfer relationships of the ground source heat pump system reflect the physical laws of heat exchange within the system and between the system and its surrounding environment. The coupled model comprehensively considers these heat exchange relationships, which is beneficial for accurately predicting the temperature state of the ground source heat pump system under different operating parameters, thereby ensuring the reliability of the current temperature field simulation. After obtaining the current temperature field, the inlet water temperature and outlet water temperature of the heat pump are obtained from it. This helps to understand the heat exchange state of the ground source heat pump system under given initial inlet water temperature and operating parameters. Based on the difference between the two, the hourly heat output of the ground source heat pump system under this condition can be accurately obtained. On this basis, this embodiment uses the difference between the hourly heat load and the hourly heat output to help determine whether the current temperature field matches the hourly heat load (i.e., whether it meets the preset matching conditions), thereby evaluating whether the simulated current temperature field can meet the heating needs of the target building. When the difference between the hourly heat load and the hourly heat extraction is less than a preset threshold, it indicates that the hourly heat extraction and the hourly heat load are relatively close, satisfying the preset matching condition. In this case, the simulated current temperature field can meet the heating demand of the target building, and the current temperature field can be used as the target temperature field. However, when the difference between the hourly heat load and the hourly heat extraction is greater than or equal to the preset threshold, it indicates that the hourly heat extraction is less than the hourly heat load and the difference is significant, making it difficult to meet the heating demand of the target building (i.e., not satisfying the preset matching condition). In this case, the initial heat pump inlet water temperature is increased according to the preset temperature gradient, and the simulation process is returned until the target temperature field is obtained. By using an automatic adjustment mechanism to continuously try different initial heat pump inlet water temperatures based on the actual heat supply and demand, a current temperature field that matches the hourly heat load is found. This is compatible with the dynamic control scenarios that ground source heat pump systems perform in actual operation to meet dynamic heat demand, which helps improve the accuracy of the target temperature field and thus further improves the reliability of the final feasibility evaluation results.

[0047] Optionally, the hourly heat pump power consumption of the ground source heat pump system is obtained based on the target temperature field and the corresponding hourly heat load, and the system operating cost within a preset time period is determined based on the hourly heat pump power consumption, including: The performance coefficient of the ground source heat pump system is determined based on the heat pump inlet water temperature corresponding to the target temperature field, and the hourly power consumption of the ground source heat pump system is obtained based on the performance coefficient and the corresponding hourly heat extraction. The system operating cost is obtained based on the hourly power consumption and the peak and valley electricity prices corresponding to the target building.

[0048] Specifically, in this embodiment, the coefficient of performance (COP) is an indicator used to measure the energy efficiency of a ground source heat pump system. It represents the ratio of the heat or cooling provided by the system to the electrical energy consumed during heating or cooling. After obtaining the target temperature field corresponding to the hourly heat load, the heat pump inlet water temperature corresponding to the target temperature field can be obtained, and the COP of the ground source heat pump system can be determined based on the heat pump inlet water temperature. For example, in this embodiment, assuming that the supply and return water temperatures on the building side are constant, the COP and the heat pump inlet water temperature corresponding to the target system temperature field can be considered to have a linear relationship, and the COP satisfies: ; Where η represents the performance coefficient. Indicates the inlet water temperature of the heat pump. Represents a constant term. This represents the regression coefficient. The constant term and regression coefficient can be determined based on the design parameters of the ground source heat pump system. For example, assuming the ground source heat pump system has a well depth of 2700m, an outer pipe diameter of 0.1594m (wall thickness of 0.0092m, thermal conductivity of 45.0W・m⁻¹・K⁻¹), an inner pipe diameter of 0.09m (wall thickness of 0.07m, thermal conductivity of 0.6W・m⁻¹・K⁻¹), a borehole diameter of 0.2413m, and a circulation flow rate of 0.01m³ / h (adjustable range 0.01-0.03m³ / h), then the constant term can be determined to be approximately 3.925, and the regression coefficient is approximately 0.083 through linear regression fitting.

[0049] In one embodiment, hourly power consumption represents the amount of electricity consumed by the ground source heat pump system per hour within a preset time period. According to the law of conservation of energy, the total heat ultimately delivered by the heat pump to the target building is theoretically equal to the heat absorbed from the ground (i.e., hourly heat extraction) plus the heat converted from the electrical energy consumed to drive the heat pump (i.e., hourly power consumption). The coefficient of performance (COP) reflects how many units of heat can be delivered to the target building for each unit of electrical energy input, i.e., the ratio of total heat to hourly heat extraction (i.e., total heat / hourly heat extraction). In this embodiment, the hourly power consumption satisfies: ; Where Qe represents hourly power consumption, Qd represents hourly heat extraction, and η represents the performance coefficient.

[0050] In one embodiment, after simulating the temperature field of target buildings in different regions, the coefficient of performance (COP) of the ground source heat pump system can be determined based on the heat pump inlet water temperature corresponding to the target temperature field. Then, the hourly power consumption of the ground source heat pump system can be obtained based on the COP and the corresponding hourly heat extraction. The hourly power consumption model of the ground source heat pump system corresponding to the target buildings in different regions within a preset time period (e.g., ten years) is shown below. Figure 5 As shown, Figure 5In the diagram, B3 represents the hourly power consumption of the ground source heat pump system corresponding to the target building in city B over ten years, L3 represents the hourly power consumption of the ground source heat pump system corresponding to the target building in city L over ten years, and X3 represents the hourly power consumption of the ground source heat pump system corresponding to the target building in city X over ten years.

[0051] In this embodiment, the heat pump inlet water temperature is one of the key parameters affecting the performance of the ground source heat pump system. Different heat pump inlet water temperatures can lead to changes in the system's internal heat exchange efficiency and compressor operating status, thereby affecting the overall system's coefficient of performance (COP). The COP, on the other hand, characterizes the conversion relationship between the system's input electrical energy (i.e., hourly power consumption) and output heat (i.e., hourly heat extraction). This embodiment determines the COP of the ground source heat pump system based on the heat pump inlet water temperature corresponding to the target temperature field, establishing a close link between the heat pump inlet water temperature and system performance. Combined with hourly heat extraction, it can reliably estimate the power consumption required by the ground source heat pump system to meet the heat demand (i.e., hourly heat load) at that moment, ensuring the accuracy of power consumption demand estimation under dynamic load. After obtaining the hourly power consumption, the lowest system operating cost of the ground source heat pump system within a preset time period can be obtained based on the peak and off-peak electricity prices corresponding to the target building's location. This is beneficial for balancing the actual electricity load requirements of the power grid that need to be considered during the actual operation of the ground source heat pump system.

[0052] Optionally, a feasibility evaluation result for the ground source heat pump system is generated based on the system operating cost, including: Obtain the non-system operating costs corresponding to the ground source heat pump system, and derive the total system cost based on the non-system operating costs and system operating costs; wherein, the non-system operating costs include at least one of the system construction costs, system maintenance costs, and system decommissioning costs; When the total system cost exceeds the first preset cost threshold, and / or when the maximum hourly heat pump power consumption exceeds the preset power consumption threshold, the feasibility evaluation result is that the target building is not suitable for arranging a ground source heat pump system; wherein, the preset power consumption threshold is determined based on the power grid supply threshold corresponding to the target building.

[0053] Optionally, hourly environmental meteorological data includes ambient temperature; after obtaining the total system cost based on non-system operating costs and system operating costs, it also includes: When the total system cost is less than or equal to the second preset cost threshold, the cumulative duration corresponding to the ambient temperature being less than the preset low temperature threshold is obtained, and it is determined whether the cumulative duration is less than the preset duration; wherein, the second preset cost threshold is less than the first preset cost threshold; If so, the feasibility assessment result is that a ground source heat pump system is suitable for the target building; If not, the feasibility assessment result is that after adjusting the thermal characteristic parameters of the target building, the target building is suitable for arranging a ground source heat pump system; wherein, the thermal characteristic parameter adjustment operation includes increasing the building envelope of the target building.

[0054] Optionally, after obtaining the total system cost based on non-system operating costs and system operating costs, the following may also be included: When the total system cost is less than or equal to the first preset cost threshold and greater than the second preset cost threshold, the feasibility evaluation result is that the target building is suitable for arranging a hybrid energy system; wherein, the hybrid energy system includes a ground source heat pump system and other heating systems.

[0055] Specifically, the non-system operating costs corresponding to the ground source heat pump system in this embodiment may include at least one of the following: system construction cost, system maintenance cost, and system decommissioning cost. The system construction cost may include construction costs (such as drilling costs) and equipment costs (such as pipes and heat pump units), and can be determined based on the design parameters of the ground source heat pump system. The system maintenance cost can be determined based on the system construction cost and a preset thermal resistance degradation coefficient of the grouting layer (e.g., maintenance cost can be equal to the product of the system construction cost and the thermal resistance degradation coefficient of the grouting layer). The thermal resistance degradation coefficient of the grouting layer can increase with the increase of a preset time period. The system decommissioning cost typically includes costs related to well sealing and ecological restoration, and can be estimated based on a preset proportion of the system construction cost (e.g., 10%). In this embodiment, the total system cost can be obtained based on the sum of the system operating costs and non-system operating costs.

[0056] In one embodiment, a reference threshold corresponding to the total system cost can be preset, and a first preset cost threshold and a second preset cost threshold can be obtained based on the reference threshold. For example, the total cost (such as the sum of electricity cost and equipment installation cost) required for a target building to meet its heating or cooling needs using other energy systems (such as air conditioning systems) within a certain period (such as 1 year) can be calculated to estimate the total cost required to use other energy systems within a preset period (such as 10 years) and obtain the reference threshold. Based on this, 80% of the reference threshold can be set as the first preset cost threshold, and 50% of the reference threshold can be set as the second preset cost threshold.

[0057] In one embodiment, when the total system cost exceeds a first preset cost threshold, it indicates that installing a ground source heat pump system at the target building will not achieve effective energy saving and cost reduction in the long run, and the feasibility evaluation result is that the target building is not suitable for installing a ground source heat pump system. Conversely, when the maximum hourly heat pump power consumption exceeds a preset power consumption threshold (which can be determined based on the power grid supply threshold of the area where the target building is located), it indicates that the power supply capacity of the area where the target building is located may not be able to meet the dynamic power consumption demand of the ground source heat pump system during actual operation, easily leading to system instability or difficulty in meeting heating or cooling needs, and the feasibility evaluation result is that the target building is not suitable for installing a ground source heat pump system.

[0058] In one embodiment, when the total system cost is less than or equal to a second preset cost threshold, it indicates that, from a total cost perspective, arranging a ground source heat pump system at the target building can achieve good energy-saving effects. At this time, the cumulative duration corresponding to ambient temperatures below a preset low-temperature threshold (which can be determined in advance according to the ambient temperature required for heating, such as 5°C) can be obtained from hourly meteorological data. For example, the target number of ambient temperatures below 5°C in hourly meteorological data can be obtained, and the cumulative duration can be determined based on the target number (e.g., assuming the target number is 900, the cumulative duration is 900 hours). The longer the cumulative duration, the longer the continuous heating demand period. The ground source heat pump system needs to extract heat from the underground soil and rock for a long time, which can easily lead to heat attenuation of the underground soil and rock heat reservoir, making it difficult to guarantee the long-term stability of the system. At this time, it is determined whether the cumulative duration is less than the preset duration. If so, it indicates that the continuous heating demand period is relatively short, and the feasibility evaluation result is that arranging a ground source heat pump system at the target building is suitable. If not, it indicates that the continuous heating demand period is relatively long, and the feasibility evaluation result is that after adjusting the thermal characteristic parameters of the target building (such as increasing the building envelope), the target building is suitable for arranging a ground source heat pump system.

[0059] In one embodiment, when the total system cost is less than or equal to a first preset cost threshold and greater than a second preset cost threshold, it indicates that the energy-saving effect that can be achieved by arranging a ground source heat pump system at the target building is acceptable, and the ground source heat pump system can be combined with other heating systems. The feasibility evaluation result is that the target building is suitable for arranging a hybrid energy system.

[0060] In this embodiment, the non-system operating costs of the ground source heat pump system (such as system construction costs, maintenance costs, and decommissioning costs) are obtained and combined with the system operating costs to obtain the total system cost. This helps to provide a more accurate and comprehensive economic consideration for the feasibility evaluation of the ground source heat pump system, further improving the reliability of the feasibility evaluation results. When the total system cost is greater than the first preset cost threshold, it indicates that arranging the ground source heat pump system at the target building may not achieve the best energy-saving and cost-reduction effect economically. In this scenario, the feasibility evaluation result is that the target building is not suitable for arranging the ground source heat pump system, which helps to avoid the waste of resources caused by blind construction. Even if the total system cost is less than or equal to the first preset cost threshold (i.e., arranging the ground source heat pump system at the target building can achieve the energy-saving and cost-reduction effect economically), this embodiment uses the maximum value of the current heat pump power consumption to grasp the maximum demand of the power grid during system operation. When the maximum value of the hourly heat pump power consumption is greater than the preset power consumption threshold, it indicates that during long-term system operation, there may be excessive pressure on the power grid, or even the power grid's power supply capacity may not be able to meet the system's operating needs, making it difficult to ensure the long-term stability of the system operation. In this scenario, the feasibility assessment still concludes that the target building is not suitable for a ground source heat pump system, which helps avoid overlooking potential operational risks during the feasibility assessment. Besides operating costs, this embodiment also considers the possibility of thermal imbalance in the heat storage layer due to prolonged heating periods during long-term operation. When the total system cost is less than or equal to the second preset cost threshold, although arranging a ground source heat pump system at the target building can achieve good energy-saving effects in terms of total cost, it is still necessary to obtain the cumulative duration corresponding to the ambient temperature being lower than the preset low-temperature threshold to assess whether the target building has a long-term heating demand. When the cumulative duration is less than the preset duration, the risk of thermal imbalance in the heat storage layer during long-term operation of the ground source heat pump system is low, and the feasibility assessment result is that the target building is suitable for arranging a ground source heat pump system. However, when the cumulative duration is greater than or equal to the preset duration, the feasibility assessment result is that after adjusting the thermal characteristic parameters of the target building, the target building is suitable for arranging a ground source heat pump system, which helps reduce the risk of thermal imbalance in the heat storage layer during long-term operation, thereby improving the stability of system operation.

[0061] Furthermore, this embodiment also considers scenarios where the energy-saving effect of the ground source heat pump system is not very significant (i.e., when the total system cost is less than or equal to a first preset cost threshold and greater than a second preset cost threshold). The feasibility evaluation result for this scenario indicates that the target building is suitable for a hybrid energy system including a ground source heat pump system and other heating systems. This facilitates the complementary advantages of the hybrid energy system, further improving energy-saving performance while meeting the building's heating needs.

[0062] Therefore, the feasibility evaluation results of this embodiment start from the perspective of economy. While evaluating the economics of arranging a ground source heat pump system at the target building, it also takes into account the compatibility with the power supply capacity of the supporting power grid, the risk of thermal imbalance in the thermal reservoir, and the flexibility of system combination application, thus comprehensively improving the reliability of the feasibility evaluation results and their guiding significance for actual projects.

[0063] like Figure 6 As shown in the figure, an embodiment of the present invention provides a feasibility evaluation device 600 for a ground source heat pump system, comprising: The first simulation module 610 is used to simulate the hourly heat load of the target building during the preset time period based on the acquired thermal characteristic parameters of the target building and the hourly environmental meteorological data during the preset time period. The second simulation module 620 is used to simulate the temperature field of the ground source heat pump system according to the obtained operating parameters of the ground source heat pump system, and obtain the target temperature field that meets the preset matching conditions with the hourly heat load. The cost determination module 630 is used to obtain the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, and to determine the system operating cost within the preset time period based on the hourly heat pump power consumption. Result generation module 640 is used to generate a feasibility evaluation result of the ground source heat pump system based on the system operating cost.

[0064] The ground source heat pump system feasibility evaluation device and the ground source heat pump system feasibility evaluation method provided in this embodiment can produce basically the same technical effects, and will not be described again here.

[0065] like Figure 7 As shown, an electronic device 700 provided in this embodiment of the invention includes a memory 710 and a processor 720; the memory 710 is used to store a computer program; the processor 720 is used to implement the feasibility evaluation method for a ground source heat pump system as described above when the computer program is executed.

[0066] Alternatively, an electronic device 700 includes a memory 710 and a processor 720 coupled to the memory 710; the memory 710 is configured to store a computer program; and the processor 720 is configured to perform the following operations when the computer program is executed: Based on the obtained thermal characteristic parameters of the target building and the hourly environmental meteorological data within the preset time period, the hourly heat load of the target building within the preset time period is simulated. Based on the obtained operating parameters of the ground source heat pump system, a temperature field simulation is performed on the ground source heat pump system to obtain a target temperature field that meets the preset matching conditions with the hourly heat load. The hourly heat pump power consumption of the ground source heat pump system is obtained based on the target temperature field and the corresponding hourly heat load, and the system operating cost within the preset time period is determined based on the hourly heat pump power consumption. The feasibility evaluation results of the ground source heat pump system are generated based on the system operating costs.

[0067] The electronic equipment provided in this embodiment and the feasibility evaluation method for ground source heat pump systems can produce basically the same technical effects, and will not be described again here.

[0068] This invention provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the feasibility evaluation method for a ground source heat pump system as described above.

[0069] Alternatively, a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to perform the following operations: Based on the obtained thermal characteristic parameters of the target building and the hourly environmental meteorological data within the preset time period, the hourly heat load of the target building within the preset time period is simulated. Based on the obtained operating parameters of the ground source heat pump system, a temperature field simulation is performed on the ground source heat pump system to obtain a target temperature field that meets the preset matching conditions with the hourly heat load. The hourly heat pump power consumption of the ground source heat pump system is obtained based on the target temperature field and the corresponding hourly heat load, and the system operating cost within the preset time period is determined based on the hourly heat pump power consumption. The feasibility evaluation results of the ground source heat pump system are generated based on the system operating costs.

[0070] The computer-readable storage medium provided in this embodiment and the feasibility evaluation method for ground source heat pump systems can produce essentially the same technical effects, and will not be described again here.

[0071] The present invention will now be described an electronic device 700 that can serve as a server or client of the present invention, which is an example of a hardware device that can be applied to various aspects of the present invention. Electronic device 700 is intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic device 700 can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0072] Electronic device 700 includes a computing unit that can perform various appropriate actions and processes based on a computer program stored in read-only memory (ROM) or a computer program loaded from a storage unit into random access memory (RAM). The RAM may also store various programs and data required for device operation. The computing unit, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0073] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. In this application, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention according to actual needs. Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units can be implemented in hardware or as software functional units.

[0074] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A feasibility evaluation method for a ground source heat pump system, characterized in that, include: Based on the obtained thermal characteristic parameters of the target building and the hourly environmental meteorological data within the preset time period, the hourly heat load of the target building within the preset time period is simulated. Based on the obtained operating parameters of the ground source heat pump system, a temperature field simulation is performed on the ground source heat pump system to obtain a target temperature field that meets the preset matching conditions with the hourly heat load. The hourly heat pump power consumption of the ground source heat pump system is obtained based on the target temperature field and the corresponding hourly heat load, and the system operating cost within the preset time period is determined based on the hourly heat pump power consumption. The feasibility evaluation results of the ground source heat pump system are generated based on the system operating costs.

2. The feasibility evaluation method for a ground source heat pump system according to claim 1, characterized in that, The step of simulating the temperature field of the ground source heat pump system based on the obtained operating parameters to obtain a target temperature field that meets the preset matching conditions with the hourly heat load includes: The simulation step includes inputting a preset initial heat pump inlet water temperature and the operating parameters into a pre-constructed coupling model to simulate the current temperature field of the ground source heat pump system; wherein, the coupling model is constructed based on the heat transfer relationships pre-associated with the ground source heat pump system; The acquisition step includes acquiring the heat pump inlet water temperature and the heat pump outlet water temperature from the current temperature field, and determining the hourly heat extraction based on the heat pump inlet water temperature and the heat pump outlet water temperature. When the difference between the hourly heat load and the hourly heat extraction is less than a preset threshold, the preset matching condition is met, and the current temperature field is taken as the target temperature field.

3. The feasibility evaluation method for a ground source heat pump system according to claim 2, characterized in that, Following the acquisition step, the following is also included: When the difference between the hourly heat load and the hourly heat extraction is greater than or equal to the preset threshold, the initial heat pump inlet water temperature is increased according to the preset temperature gradient, and the simulation step is returned until the target temperature field is obtained.

4. The feasibility evaluation method for a ground source heat pump system according to claim 2, characterized in that, The step of obtaining the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, and determining the system operating cost within the preset time period based on the hourly heat pump power consumption, includes: The performance coefficient of the ground source heat pump system is determined based on the heat pump inlet water temperature corresponding to the target temperature field, and the hourly power consumption of the ground source heat pump system is obtained based on the performance coefficient and the corresponding hourly heat extraction. The system operating cost is obtained based on the hourly power consumption and the peak-valley electricity price corresponding to the target building.

5. The feasibility evaluation method for a ground source heat pump system according to claim 1, characterized in that, The feasibility evaluation result of the ground source heat pump system generated based on the system operating cost includes: Obtain the non-system operating costs corresponding to the ground source heat pump system, and obtain the total system cost based on the non-system operating costs and the system operating costs; wherein, the non-system operating costs include at least one of system construction costs, system maintenance costs, and system decommissioning costs; When the total cost of the system is greater than a first preset cost threshold, and / or when the maximum value of the hourly heat pump power consumption is greater than a preset power consumption threshold, the feasibility evaluation result is that the target building is not suitable for arranging the ground source heat pump system; wherein, the preset power consumption threshold is determined based on the power grid supply threshold corresponding to the target building.

6. The feasibility evaluation method for a ground source heat pump system according to claim 5, characterized in that, The hourly environmental meteorological data includes ambient temperature; after obtaining the total system cost based on the non-system operating cost and the system operating cost, the method further includes: When the total cost of the system is less than or equal to the second preset cost threshold, the cumulative duration corresponding to the ambient temperature being less than the preset low temperature threshold is obtained, and it is determined whether the cumulative duration is less than the preset duration; wherein, the second preset cost threshold is less than the first preset cost threshold; If so, the feasibility evaluation result indicates that the ground source heat pump system is suitable for the target building; If not, the feasibility evaluation result is that after adjusting the thermal characteristic parameters of the target building, the target building is suitable for arranging the ground source heat pump system; wherein, the thermal characteristic parameter adjustment operation includes increasing the building envelope of the target building.

7. The feasibility evaluation method for a ground source heat pump system according to claim 6, characterized in that, After obtaining the total system cost based on the non-system operating costs and the system operating costs, the method further includes: When the total cost of the system is less than or equal to the first preset cost threshold and greater than the second preset cost threshold, the feasibility evaluation result is that the target building is suitable for arranging a hybrid energy system; wherein, the hybrid energy system includes the ground source heat pump system and other heating systems.

8. A feasibility evaluation device for a ground source heat pump system, characterized in that, include: The first simulation module is used to simulate the hourly heat load of the target building during the preset time period based on the acquired thermal characteristic parameters of the target building and the hourly environmental meteorological data during the preset time period. The second simulation module is used to simulate the temperature field of the ground source heat pump system based on the obtained operating parameters of the ground source heat pump system, and obtain the target temperature field that meets the preset matching conditions with the hourly heat load. The cost determination module is used to obtain the hourly heat pump power consumption of the ground source heat pump system based on the target temperature field and the corresponding hourly heat load, and to determine the system operating cost within the preset time period based on the hourly heat pump power consumption. The result generation module is used to generate a feasibility evaluation result of the ground source heat pump system based on the system operating cost.

9. An electronic device, characterized in that, Including memory and processor; The memory is used to store computer programs; The processor is used to implement the feasibility evaluation method for a ground source heat pump system as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the feasibility evaluation method for a ground source heat pump system as described in any one of claims 1 to 7.

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