Simulation method, device, equipment and medium of solar ground source heat pump system

Abstract

The present invention provides a simulation method, device, equipment and medium for a solar ground source heat pump system. The method comprises: based on the design parameters of the shallow soil source and the ground source heat pump unit, simulating and calculating the ground source heat pump system within a preset time period to obtain the initial heat intake of the shallow soil source within the preset time period; based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the water storage tank and design parameters of the heat exchanger, simulating and calculating the ground source heat pump system and the solar energy system to obtain the heat transfer from the solar collector to the shallow soil source, optimizing the initial heat intake and obtaining the target heat intake. It can make full use of renewable energy such as solar energy, reduce dependence on traditional energy, reduce operating costs, significantly improve the overall energy efficiency of the solar ground source heat pump system, and realize the efficient operation of the solar ground source heat pump system.

Description

Technical Field

[0001] The present invention relates to the field of energy, specifically to the fields of building energy conservation, renewable energy utilization and intelligent control technology, and more specifically to a simulation method, device, equipment and medium for a solar ground source heat pump system. Background Art

[0002] As an important renewable energy application technology, solar energy and ground source heat pump technology have high energy utilization efficiency and environmental protection advantages. The solar ground source heat pump system combines the advantages of solar energy and ground source heat pumps, which can not only effectively reduce energy consumption, but also use renewable energy for heating and cooling. However, due to the volatility of solar energy and the complexity of ground source heat pump systems, how to achieve effective storage and heat release of heat inside the solar ground source heat pump system has become an important factor affecting system performance. Summary of the invention

[0003] In view of this, the present invention provides a simulation method, device, equipment and medium for a solar ground source heat pump system.

[0004] The first aspect of the present invention provides a simulation method for a solar ground source heat pump system, the solar ground source heat pump system comprising: a ground source heat pump system and a solar energy system, the ground source heat pump system comprising a shallow soil source and a ground source heat pump unit, the solar energy system comprising a solar collector, a heat storage tank and a heat exchanger; the simulation method for the solar ground source heat pump system comprises: based on the design parameters of the shallow soil source and the ground source heat pump unit, simulating and calculating the ground source heat pump system within a preset time period to obtain an initial heat intake of the shallow soil source within the preset time period, wherein the initial heat intake is used to characterize the heat that the shallow soil source needs to obtain within the preset time period before optimization, so as to determine the heat accumulation fluctuation on the ground source side; based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the heat storage tank and design parameters of the heat exchanger, simulating and calculating the ground source heat pump system and the solar energy system to obtain the heat transfer amount transmitted from the solar collector to the shallow soil source, optimizing the initial heat intake and obtaining the target heat intake.

[0005] According to an embodiment of the present invention, based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the hot water storage tank and design parameters of the heat exchanger, the ground source heat pump system and the solar system are simulated and calculated to obtain the heat transfer amount transmitted from the solar collector to the shallow soil source, and the initial heat extraction is optimized to obtain the target heat extraction, including: inputting the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the hot water storage tank and design parameters of the heat exchanger into the solar ground source heat pump model, and outputting the heat transfer amount transmitted from the solar collector to the shallow soil source; determining the amount of heat to be supplemented based on the heat transfer and the initial heat extraction; determining the target heat extraction based on the amount of heat to be supplemented when it is determined that the amount of heat to be supplemented is less than or equal to a threshold; determining the target heat extraction based on the amount of heat to be supplemented when it is determined that the amount of heat to be supplemented is greater than the threshold, iteratively calculating the solar ground source heat pump model until the amount of heat to be supplemented determined after the iteration is less than or equal to the threshold, then stopping the iterative calculation; determining the target heat extraction based on the amount of heat to be supplemented determined after the iteration.

[0006] According to an embodiment of the present invention, a solar ground source heat pump model includes a ground source heat pump sub-model, an energy conservation sub-model for a solar thermal collector, a dynamic heat balance calculation sub-model, and a heat exchange rate sub-model; the design parameters of a shallow soil source and a ground source heat pump unit, meteorological parameters, the design parameters of a solar thermal collector, the design parameters of a hot water storage tank, and the design parameters of a heat exchanger are input into the solar ground source heat pump model, and the heat transfer amount transmitted from the solar thermal collector to the shallow soil source is output, including: inputting the design parameters of the shallow soil source and the ground source heat pump unit into the ground source heat pump sub-model, and outputting the outlet water temperature of the shallow soil source; inputting meteorological parameters and the design parameters of the solar thermal collector into the energy conservation sub-model, and outputting the relationship between the collected heat of the solar thermal collector and the temperature of the hot water storage tank; inputting the relationship between the collected heat of the solar thermal collector and the temperature of the hot water storage tank, the design parameters of the hot water storage tank, and the temperature of the hot water storage tank into the dynamic heat balance The heat balance calculation sub-model outputs the outlet temperature of the hot water storage tank; the outlet water temperature of the shallow soil source, the outlet temperature of the hot water storage tank and the design parameters of the heat exchanger are input into the heat exchange rate sub-model, and the heat transfer amount transmitted from the solar collector to the shallow soil source is output; among them, the ground source heat pump sub-model is constructed based on the Green's function method, the linear superposition principle and the design parameters of the shallow soil source and the ground source heat pump unit; the energy conservation sub-model for the solar collector is constructed based on the energy conservation principle, the design parameters of the solar collector, the meteorological parameters and the temperature change of the working medium entering and leaving the solar collector; the dynamic heat balance calculation sub-model is constructed based on the design parameters of the hot water storage tank, the temperature change of the working medium entering and leaving the hot water storage tank and the heat transfer process of the hot water storage tank; the heat exchange rate sub-model is constructed based on the heat transfer unit number method, the design parameters of the heat exchanger and the heat exchange process of the heat exchanger.

[0007] According to an embodiment of the present invention, the design parameters of the solar collector include the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium and the temperature of the solar collector surface; the meteorological parameters include the ambient temperature and the solar radiation intensity; the energy conservation sub-model includes the collection heat conservation sub-model; the simulation method of the solar ground source heat pump system also includes: constructing a collection heat conservation sub-model according to the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium, the temperature of the solar collector surface, the ambient temperature, the solar radiation intensity and the temperature change of the working medium entering and exiting the solar collector.

[0008] According to an embodiment of the present invention, the design parameters of the hot water storage tank include: the mass of water in the hot water storage tank, the specific heat capacity of the working medium of the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank and the external surface area of ​​the hot water storage tank; the simulation method of the solar ground source heat pump system also includes: based on the heat transfer process of the hot water storage tank, according to the mass of water in the hot water storage tank, the specific heat capacity of the working medium of the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank, the external surface area of ​​the hot water storage tank, the collection amount of the solar collector and the temperature change of the working medium entering and leaving the hot water storage tank, a dynamic heat balance calculation sub-model is constructed.

[0009] According to an embodiment of the present invention, the design parameters of the heat exchanger include the specific heat capacity of the working medium of the heat exchanger, the mass flow rate of the working medium of the heat exchanger, the heat transfer coefficient of the heat exchanger and the heat transfer area of ​​the heat exchanger; the simulation method of the solar ground source heat pump system also includes: determining the heat capacity rate according to the specific heat capacity of the working medium of the heat exchanger and the mass flow rate of the working medium of the heat exchanger; determining the heat capacity rate of the fluid at the first temperature and the fluid at the second temperature according to the heat transfer coefficient of the heat exchanger and the heat transfer area of ​​the heat exchanger based on the heat transfer unit number method; based on the minimum value of the heat capacity rates of the fluid at the first temperature and the fluid at the second temperature, constructing a heat exchange rate sub-model according to the temperature change of the fluid at the first temperature or the fluid at the second temperature and the fluid.

[0010] According to an embodiment of the present invention, the simulation method of the solar ground source heat pump system also includes: determining the total heat collection amount and the heat collection time of the solar collector based on the target heat extraction; determining the time interval based on the heat collection time and the preset time period; performing simulation calculations on the ground source heat pump system for the time interval to obtain the performance parameters of the shallow soil source and the performance parameters of the ground source heat pump unit.

[0011] The second aspect of the present invention provides a simulation device for a solar ground source heat pump system, the solar ground source heat pump system comprising: a ground source heat pump system and a solar energy system, the ground source heat pump system comprising a shallow soil source and a ground source heat pump unit, the solar energy system comprising a solar collector, a heat storage tank and a heat exchanger; the simulation device for the solar ground source heat pump system comprises: a first calculation module, for performing simulation calculations on the ground source heat pump system within a preset time period based on the design parameters of the shallow soil source and the ground source heat pump unit, and obtaining an initial heat intake of the shallow soil source within the preset time period, wherein the initial heat intake is used to characterize the heat that the shallow soil source needs to obtain within the preset time period before optimization; and a second calculation module, for performing simulation calculations on the ground source heat pump system and the solar energy system based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the heat storage tank and design parameters of the heat exchanger, and obtaining the heat transfer amount transmitted from the solar collector to the shallow soil source, optimizing the initial heat intake and obtaining the target heat intake.

[0012] A third aspect of the present invention provides an electronic device, comprising: one or more processors; a memory for storing one or more computer programs, wherein the one or more processors execute the one or more computer programs to implement the steps of the above method.

[0013] The fourth aspect of the present invention further provides a computer-readable storage medium on which a computer program or instruction is stored, and the steps of the above method are implemented when the above computer program or instruction is executed by a processor.

[0014] According to the embodiment of the present invention, since the simulation calculation of the ground source heat pump is performed for the first time within a preset time period, the heat accumulation fluctuation on the ground source side can be determined. Then, the ground source heat pump system and the solar energy system are simulated and calculated, and based on the operating status of the ground source heat pump system and the solar energy system and the heat accumulation fluctuation on the ground source side, the heat transfer amount transmitted by the solar collector to the shallow soil source can be optimized to achieve optimal control. For example, when solar energy is available, solar energy is used for heating first, and renewable energy such as solar energy is fully utilized to reduce excessive dependence on the ground source heat pump system and reduce the operating cost of the ground source heat pump system, thereby significantly improving the overall energy efficiency of the solar ground source heat pump system and achieving efficient operation of the solar ground source heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present invention will become more apparent through the following description of embodiments of the present invention with reference to the accompanying drawings.

[0016] Figure 1 A simulation schematic diagram of a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0017] Figure 2 A flow chart of a simulation method for a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0018] Figure 3 A block diagram of a simulation device for a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0019] Figure 4 A block diagram of an electronic device suitable for implementing a simulation method for a solar ground source heat pump system according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0020] Below, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of embodiments of the present invention. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of concepts of the present invention.

[0021] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0022] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0023] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0024] In the process of realizing the concept of the present invention, it was found that the dynamic scheduling and multi-module collaborative work of the solar ground source heat pump system faced many technical difficulties, especially the energy coupling and load distribution problems between different modules. Most of the existing simulation solution methods use a single module or a fixed load assumption, which cannot effectively cope with load fluctuations, environmental changes and dynamic adjustment requirements of the system in practical applications. Therefore, a new simulation solution algorithm is needed that can dynamically optimize system operation in a complex environment with multiple modules and realize intelligent scheduling between modules.

[0025] Based on this, the present invention optimizes the heat storage and heat release process in the ground source heat pump system, integrates the heat transfer model, dynamic system model and optimization algorithm, and controls the operating state of the solar collector in real time according to the heat accumulation fluctuation on the ground source side, so as to realize the efficient operation of the solar ground source heat pump system. Under changing environmental conditions, the present invention adjusts the heat storage process, solar energy collection efficiency and heat exchange efficiency of underground heat sources in real time, optimizes system performance, ensures the stability of thermal balance and efficient use of energy, thereby improving the energy utilization efficiency and operation stability of the entire system.

[0026] An embodiment of the present invention provides a simulation method for a solar ground source heat pump system, wherein the solar ground source heat pump system comprises: a ground source heat pump system and a solar energy system, wherein the ground source heat pump system comprises a shallow soil source and a ground source heat pump unit, and the solar energy system comprises a solar collector, a heat storage tank and a heat exchanger; the simulation method for the solar ground source heat pump system comprises: based on the design parameters of the shallow soil source and the ground source heat pump unit, simulating and calculating the ground source heat pump system within a preset time period to obtain an initial heat intake of the shallow soil source within the preset time period, wherein the initial heat intake is used to characterize the heat that the shallow soil source needs to obtain within the preset time period before optimization, so as to determine the heat accumulation fluctuation on the ground source side; based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the heat storage tank and design parameters of the heat exchanger, the heat intake of the ground source heat pump system and the solar energy system is simulated and calculated to obtain the heat transfer from the solar collector to the shallow soil source, and the target heat intake is obtained.

[0027] The following will be passed Figure 1~Figure 2 The simulation method of the solar ground source heat pump system according to the embodiment of the present invention is described in detail.

[0028] The solar ground source heat pump system can include: a ground source heat pump system and a solar energy system. The ground source heat pump system can include a shallow soil source and a ground source heat pump unit.

[0029] Figure 1 A simulation schematic diagram of a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0030] like Figure 1 As shown, a group of underground heat exchanger wells can be buried in the shallow soil source. The solar energy system can include a solar collector, a hot water storage tank and a heat exchanger. The heat exchanger can include a plate heat exchanger. The solar collector can include multiple solar collectors. Multiple solar collectors can form a solar collector system.

[0031] The solar ground source heat pump system can form a water supply cycle between the water pump 1 and the building load terminal system by opening valves 1 and valve 2. The buried pipe heat exchanger well group buried in the shallow soil source can form a water supply cycle between the water pump 2 and the ground source heat pump unit by opening valves 9 and valve 3, thereby jointly realizing heating and cooling at the building load terminal. In cooling operation, the operation of the solar energy system can be shut down by closing valves 4 to valve 8 and opening valves 1 to valve 3 and valve 9, and only the operation of the ground source heat pump system can be turned on. In heating operation, the operation of the solar energy system and the ground source heat pump system can be turned on by closing valve 4 and opening valves 1 to valve 3 and valves 5 to valve 9, thereby realizing the utilization of the heat from the solar collector in the solar energy system. It should be noted that Figure 1 The arrow in the middle represents the flow direction of the fluid or working medium.

[0032] According to an embodiment of the present invention, the working medium of the plate heat exchanger flows out of the plate heat exchanger at the second temperature and can enter the hot water storage tank through the water pump 3. The working medium of the hot water storage tank can enter the solar thermal collector from the hot water storage tank at the second temperature, and after being heated, the working medium of the solar thermal collector can enter the hot water storage tank at the first temperature through the water pump 4, and the working medium of the hot water storage tank can flow out of the hot water storage tank at the first temperature and enter the plate heat exchanger. The first temperature is higher than the second temperature, for example, the first temperature is a high temperature and the second temperature is a low temperature. The working media mentioned above can all be water.

[0033] Figure 2 A flow chart of a simulation method for a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0034] like Figure 2 As shown, the large model deployment method includes operations S210 to S220.

[0035] In operation S210, based on the design parameters of the shallow soil source and the ground source heat pump unit, a simulation calculation is performed on the ground source heat pump system within a preset time period to obtain an initial heat intake of the shallow soil source within the preset time period.

[0036] In operation S220, based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the water storage tank and design parameters of the heat exchanger, the ground source heat pump system and the solar energy system are simulated and calculated to obtain the heat transfer from the solar collector to the shallow soil source, and the initial heat extraction is optimized to obtain the target heat extraction.

[0037] According to an embodiment of the present invention, the initial heat extraction amount is used to characterize the amount of heat that needs to be obtained by the shallow soil source within a preset time period before optimization, so as to determine the heat accumulation fluctuation on the ground source side.

[0038] According to an embodiment of the present invention, the design parameters of the shallow soil source may include: specific heat capacity of the fluid working medium, borehole depth, surface temperature of the rock and soil medium, thermal resistance in the borehole, thermal conductivity of the rock and soil medium, dimensionless temperature response between boreholes under the action of unit rectangular pulse heat flow in the current time interval, minimum inlet water temperature in summer, maximum inlet water temperature in summer, minimum inlet water temperature in winter, and maximum inlet water temperature in winter.

[0039] The design parameters of the geothermal heat pump unit may include: summer performance parameters of the geothermal heat pump unit, rated cooling load of the geothermal heat pump unit, rated cooling power of the geothermal heat pump unit, winter performance parameters of the geothermal heat pump unit, rated cooling load of the geothermal heat pump unit, rated heating power of the geothermal heat pump unit, total number of geothermal heat pump units, operating load of the geothermal heat pump system, load side inlet water temperature, and load side outlet water temperature.

[0040] The preset time period can be one year. For the ground source side, that is, the ground source heat pump system, a simulation calculation can be performed within one year to determine the heat that the shallow soil source needs to obtain within this year, that is, the heat taken, and the heat that does not need to be obtained, that is, the heat gain. The heat accumulation fluctuation on the ground source side can be determined based on the heat taken and heat gained within this year.

[0041] According to an embodiment of the present invention, a ground source heat pump system and a solar energy system can be simulated and calculated based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the hot water storage tank, and design parameters of the heat exchanger to determine the amount of heat that can be transferred from the solar collector of the solar energy system to the shallow soil source. The target heat is used to indicate the amount of heat that can be transferred when the solar collector is used to transfer heat to the shallow soil source.

[0042] According to the embodiment of the present invention, since the simulation calculation of the ground source heat pump is performed for the first time within a preset time period, the heat accumulation fluctuation on the ground source side can be determined. Then, the ground source heat pump system and the solar energy system are simulated and calculated, and based on the operating status of the ground source heat pump system and the solar energy system and the heat accumulation fluctuation on the ground source side, the heat transfer amount transmitted by the solar collector to the shallow soil source can be optimized to achieve optimal control. For example, when solar energy is available, solar energy is used for heating first, and renewable energy such as solar energy is fully utilized to reduce excessive dependence on the ground source heat pump system and reduce the operating cost of the ground source heat pump system, thereby significantly improving the overall energy efficiency of the solar ground source heat pump system and achieving efficient operation of the solar ground source heat pump system.

[0043] According to an embodiment of the present invention, Figure 2 The operation S210 shown, based on the design parameters of the shallow soil source and the ground source heat pump unit, performs simulation calculation on the ground source heat pump system within a preset time period to obtain the initial heat intake of the shallow soil source within the preset time period, which may include the operation of: constructing a ground source heat pump sub-model based on the Green's function method, the linear superposition principle, and the design parameters of the shallow soil source and the ground source heat pump unit. Input the design parameters of the shallow soil source and the ground source heat pump unit into the ground source heat pump sub-model, and output the outlet water temperature of the shallow soil source. Input the outlet water temperature of the shallow soil source into the preset function relationship, and output the initial heat intake of the shallow soil source within the preset time period.

[0044] According to an embodiment of the present invention, the ground source heat pump sub-model can be shown as follows (1):

[0045] (1)

[0046] in, is the drilling depth, in m; is the comprehensive thermal conductivity of rock and soil medium, in units of ; is the specific heat capacity of the fluid, is the specific heat capacity of the working medium of the ground source heat pump system, in units of ; is the thermal resistance in the drilling hole, in units of ; is the zero point of excess temperature, the surface temperature of rock and soil medium, in °C; is the intermediate variable 1; is the intermediate variable 2; is the outlet water temperature of the shallow soil source, in ℃; I is the flow rate; T1 is the inlet temperature column vector of each borehole buried pipe heat exchanger within the preset time interval; T1 is the inlet water temperature of the shallow soil source at the current moment; M is the mass flow diagonal matrix of each borehole buried pipe heat exchanger within the preset time interval, and the mass flow of each borehole is the mass flow averaged from the total mass flow of the shallow soil source to each borehole; G is the dimensionless temperature response between the boreholes under the action of the unit rectangular pulse heat flux within the current time interval; S is the temperature state of the shallow soil source within the preset time interval, that is, the excess temperature at the middle position of the wall of each borehole of the shallow soil source caused by the step heat flux of each borehole buried pipe heat exchanger based on the historical moment; is the column vector of the inlet temperature of each bored ground pipe heat exchanger within a preset time interval.

[0047] The preset function relationship is shown in the following formula (2):

[0048] (2)

[0049] in, The initial heat intake of the shallow soil source within the preset time period, in kWh; is the total mass flow rate at the shallow soil source inlet, in kg / s; is the water inlet temperature of the shallow soil source, in °C. The water inlet temperature of the shallow soil source can be the outlet water temperature of the load side.

[0050] According to an embodiment of the present invention, based on the design parameters of the shallow soil source and the ground source heat pump unit, a simulation calculation is performed on the ground source heat pump system within a preset time period to obtain the heat intake of the shallow soil source within the preset time period. The operation mode of the shallow soil source is determined as shown in the following formula (3):

[0051] (3)

[0052] The initial heat intake can be obtained according to the operation mode, and then the heat accumulation fluctuation on the ground source side can be determined.

[0053] According to an embodiment of the present invention, there is a certain functional relationship between the initial heat removal and the temperature, such as The objective function can be constructed as shown in the following formula (4):

[0054] (4)

[0055] Initialize T1=[T min, T max ], where T min and T max It can be expressed as the following formula (5):

[0056] (5)

[0057] in, is the minimum inlet water temperature of the shallow soil source, in °C; is the maximum inlet water temperature of the shallow soil source, in °C; is the minimum inlet water temperature of the shallow soil source in summer, in °C; is the maximum inlet water temperature of the shallow soil source in summer, in °C; is the minimum inlet water temperature of the shallow soil source in winter, in °C; It is the maximum inlet water temperature of the shallow soil source in winter, in ℃.

[0058] The water inlet temperature of the shallow soil source can be determined based on the simulation and the outlet water temperature of shallow soil sources .

[0059] According to an embodiment of the present invention, Figure 2 The operation S220 shown, based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the hot water storage tank and design parameters of the heat exchanger, simulates and calculates the heat transfer amount transmitted from the solar collector to the shallow soil source, optimizes the initial heat extraction, and obtains the target heat extraction, which may include the following operations: inputting the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the hot water storage tank and design parameters of the heat exchanger into the solar ground source heat pump model, and outputting the heat transfer amount transmitted from the solar collector to the shallow soil source; determining the amount of heat to be supplemented based on the heat transfer and the initial heat extraction; determining the target amount of heat to be supplemented based on the amount of heat to be supplemented when it is determined that the amount of heat to be supplemented is less than or equal to a threshold; iteratively calculating the solar ground source heat pump model when it is determined that the amount of heat to be supplemented is greater than the threshold, until the amount of heat to be supplemented determined after the iteration is less than or equal to the threshold, then stopping the iterative calculation; determining the target amount of heat to be supplemented based on the amount of heat to be supplemented determined after the iteration.

[0060] According to an embodiment of the present invention, the solar ground source heat pump model may include a ground source heat pump sub-model, an energy conservation sub-model for a solar collector, a dynamic heat balance calculation sub-model, and a heat exchange rate sub-model. Inputting the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, the design parameters of the solar collector, the design parameters of the hot water storage tank and the design parameters of the heat exchanger into the solar ground source heat pump model, and outputting the heat transfer amount transmitted from the solar collector to the shallow soil source, can include the following operations: inputting the design parameters of the shallow soil source and the ground source heat pump unit into the ground source heat pump sub-model, and outputting the outlet water temperature of the shallow soil source; inputting the meteorological parameters and the design parameters of the solar collector into the energy conservation sub-model, and outputting the relationship between the collected heat of the solar collector and the temperature of the hot water storage tank; inputting the relationship between the collected heat of the solar collector and the temperature of the hot water storage tank, the design parameters of the hot water storage tank and the temperature of the hot water storage tank into the dynamic heat balance calculation sub-model, and outputting the outlet temperature of the hot water storage tank; inputting the outlet water temperature of the shallow soil source, the outlet temperature of the hot water storage tank and the design parameters of the heat exchanger into the heat exchange rate sub-model, and outputting the heat transfer amount transmitted from the solar collector to the shallow soil source.

[0061] According to an embodiment of the present invention, a ground source heat pump sub-model can be constructed based on the Green's function method, the linear superposition principle, and the design parameters of the shallow soil source and ground source heat pump unit. An energy conservation sub-model for the solar collector is constructed based on the energy conservation principle, the design parameters of the solar collector, meteorological parameters, and the temperature change of the working medium entering and leaving the solar collector. A dynamic heat balance calculation sub-model is constructed based on the design parameters of the hot water storage tank, the temperature change of the working medium entering and leaving the hot water storage tank, and the heat transfer process of the hot water storage tank. A heat exchange rate sub-model is constructed based on the heat transfer unit number method, the design parameters of the heat exchanger, and the heat exchange process of the heat exchanger.

[0062] According to an embodiment of the present invention, the ground source heat pump sub-model based on the Green's function method and the linear superposition principle can utilize the data of each operation on the ground source side to update the temperature state of the shallow soil source in real time, and quickly calculate the outlet water temperature response of the shallow soil source under specific mass flow and inlet water temperature conditions.

[0063] According to an embodiment of the present invention, the mathematical model of the solar thermal collector, i.e., the energy conservation sub-model of the solar thermal collector, is based on the principle of conservation of energy and combines heat transfer mechanisms such as radiation, convection and conduction, taking into account multiple factors such as radiation intensity, solar thermal collector efficiency, heat loss, flow and temperature change of the working fluid, etc.

[0064] According to an embodiment of the present invention, the hot water storage tank is an important component of the solar energy system, which is responsible for storing the hot water collected by the solar collector and providing a stable hot water supply according to demand. Therefore, when constructing the dynamic heat balance calculation sub-model, factors such as the thermal energy storage in the water tank, heat loss, and water temperature change are considered.

[0065] According to an embodiment of the present invention, the heat exchange rate sub-model adopts the heat transfer unit number method, such as The effective heat transfer capacity of the heat exchanger is solved by this method, and then the heat exchange effect of the heat exchanger is obtained.

[0066] According to an embodiment of the present invention, the heat storage and release strategy of the heat pump system can be optimized in real time by dynamically adjusting the learning rate, ensuring that the system can operate efficiently under different climatic conditions and load requirements, and maximizing the efficiency of thermal energy utilization. Accurate heat balance control can be used to reduce energy waste due to excessive heat storage or excessive heat release, and improve the economy and sustainability of the solar ground source heat pump system in a changing environment. By optimizing the heat storage and release process, the system can be prevented from over-operating, and the wear and failure of the equipment can be reduced, thereby extending the service life of the heat pump system. Real-time data feedback and adaptive algorithms can be combined to improve the intelligent adjustment capability of the system under different operating conditions, and achieve efficient, stable and reliable energy management.

[0067] According to an embodiment of the present invention, the ground source heat pump sub-model may be a calculation model as shown in the above formula (1).

[0068] The design parameters of the solar collector may include the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium, and the temperature of the solar collector surface.

[0069] Meteorological parameters may include ambient temperature and solar radiation intensity.

[0070] The energy conservation submodel may include a heat conservation submodel.

[0071] According to an embodiment of the present invention, an energy conservation sub-model for a solar collector is constructed based on the principle of conservation of energy, design parameters of the solar collector, meteorological parameters, and temperature changes of the working medium entering and exiting the solar collector. The operation may include: constructing a collector heat conservation sub-model according to the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium, the temperature of the solar collector surface, the ambient temperature, the intensity of solar radiation, and temperature changes of the working medium entering and exiting the solar collector.

[0072] According to an embodiment of the present invention, the heat conservation sub-model may be as shown in the following equations (6) to (8):

[0073] (6)

[0074] (7)

[0075] (8)

[0076] is the heat collected by the solar collector, in kWh; is the specific heat capacity of the working medium of the solar collector, in J / kg·℃; is the mass flow rate of the working medium of the solar collector, in kg / s; is the temperature of the working medium entering the solar collector, in °C; is the temperature of the working medium leaving the solar collector, in °C; is the absorptivity of the solar collector surface; is the solar radiation intensity per unit area, in W / m²; is the surface area of ​​the solar collector in m²; is the emissivity of the solar collector surface; is the Stefan-Boltzmann constant, in W / m²·℃ 4 ; is the temperature of the solar collector surface, in °C; is the ambient temperature, in °C; is the solar collector efficiency, in °C; is the temperature of the hot water storage tank, in °C; is the convective heat transfer coefficient.

[0077] It should be noted that the present invention refers to , and Are equal.

[0078] According to an embodiment of the present invention, the design parameters of the hot water storage tank may include: the quality of water in the hot water storage tank, the specific heat capacity of the working medium of the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank and the external surface area of ​​the hot water storage tank.

[0079] According to an embodiment of the present invention, a dynamic heat balance calculation sub-model is constructed based on the design parameters of the hot water storage tank, the temperature change of the working medium entering and leaving the hot water storage tank, and the heat transfer process of the hot water storage tank. The operation may include: based on the heat transfer process of the hot water storage tank, according to the mass of water in the hot water storage tank, the specific heat capacity of the working medium in the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank, the external surface area of ​​the hot water storage tank, the amount of heat collected by the solar collector, and the temperature change of the working medium entering and leaving the hot water storage tank, a dynamic heat balance calculation sub-model is constructed.

[0080] According to an embodiment of the present invention, the dynamic heat balance calculation sub-model can be shown as follows (9):

[0081] (9)

[0082] in, is the mass of water in the hot water storage tank, in kg; is the specific heat capacity of the working medium of the hot water storage tank, in J / kg·℃; is the overall thermal conductivity of the hot water storage tank; is the external surface area of ​​the hot water storage tank, in m²; is the temperature of the hot water storage tank, in °C, and the upwind method is used for numerical solution; is the external environment temperature, in °C; is the mass of water flowing out of the hot water storage tank, in kg; is the outlet temperature of the hot water storage tank, in °C.

[0083] According to an embodiment of the present invention, the design parameters of the heat exchanger may include the specific heat capacity of the working medium of the heat exchanger, the mass flow rate of the working medium of the heat exchanger, the heat transfer coefficient of the heat exchanger, and the heat transfer area of ​​the heat exchanger.

[0084] According to an embodiment of the present invention, a heat exchange rate sub-model is constructed based on the heat transfer unit number method, the design parameters of the heat exchanger and the heat exchange process of the heat exchanger, which may include the following operations: determining the heat capacity rate according to the specific heat capacity of the working medium of the heat exchanger and the mass flow rate of the working medium of the heat exchanger; determining the heat capacity rate of the fluid at the first temperature and the fluid at the second temperature according to the heat transfer coefficient of the heat exchanger and the heat transfer area of ​​the heat exchanger based on the heat transfer unit number method; and constructing the heat exchange rate sub-model according to the fluid at the first temperature or the fluid at the second temperature and the temperature change of the fluid based on the minimum value of the heat capacity rates of the fluid at the first temperature and the fluid at the second temperature.

[0085] According to an embodiment of the present invention, the heat exchange rate sub-model can be shown as follows (10) to (12):

[0086] (10)

[0087] (11)

[0088] (12)

[0089] in, is the heat capacity rate; is the mass flow rate in the heat exchanger, kg / s; is the specific heat capacity of the fluid working medium, in J / kg·℃; is the heat transfer coefficient; is the heat transfer area of ​​the heat exchanger, in m²; is the minimum value of the heat capacity ratio of the first temperature fluid and the second temperature fluid; is the maximum value of the heat capacity ratios of the first temperature fluid and the second temperature fluid; NTU is the number of heat transfer units; The first temperature is higher than the second temperature. It should be noted that the specific heat capacities of the present invention are equal because both the cold and hot fluids are water.

[0090] When it is determined that the heat capacity rate of the first temperature fluid is less than the heat capacity rate threshold, the calculation formula of the efficiency can be shown as follows (13) to (15):

[0091] (13)

[0092] (14)

[0093] (15)

[0094] in, is the first temperature fluid inlet temperature; is the outlet temperature of the first temperature fluid; is the second temperature fluid inlet temperature; is the water tank outlet temperature; It is the water outlet temperature of shallow soil source.

[0095] When it is determined that the heat capacity rate of the first temperature fluid is less than the heat capacity rate threshold, the outlet temperature of the second temperature fluid is calculated as shown in the following formula (16):

[0096] (16)

[0097] in, is the actual heat transfer, in kWh; is the heat capacity rate of the fluid at the first temperature; is the heat capacity rate of the second temperature fluid; is the outlet temperature of the second temperature fluid; is the first temperature fluid inlet temperature.

[0098] According to an embodiment of the present invention, the design parameters of the geothermal heat pump unit may include: summer performance parameters of the geothermal heat pump unit, rated cooling load of the geothermal heat pump unit, rated cooling power of the geothermal heat pump unit, winter performance parameters of the geothermal heat pump unit, rated cooling load of the geothermal heat pump unit, rated heating power of the geothermal heat pump unit, the total number of geothermal heat pump units, operating load of the geothermal heat pump system, load side inlet water temperature, and load side outlet water temperature.

[0099] Taking a whole year as an example, the cooling power of the ground source heat pump unit in the cooling season The calculation formula can be shown as follows (17)~(18):

[0100] (17)

[0101] (18)

[0102] in, The cooling power of the ground source heat pump unit in the cooling season, in kW; Cooling season performance parameters of ground source heat pump units; The outlet water temperature on the load side of the ground source heat pump unit, i.e. the outlet water temperature of the chilled water, in °C; The water inlet temperature on the ground source side of the ground source heat pump unit, that is, the cooling water return temperature, in °C; is the unit load rate, the ground source heat pump unit operating load in the cooling season Rated cooling load of ground source heat pump unit in cooling season The ratio of is the rated cooling power of the ground source heat pump unit, in kW. It should be noted that the form of aPLRT in the present invention represents a multiplied by PLR multiplied by T.

[0103] Power of ground source heat pump unit in heating season The calculation formula can be shown as follows (19)~(20):

[0104] (19)

[0105] (20)

[0106] in, The power of the ground source heat pump unit in the heating season, in kW; It is the performance parameter of ground source heat pump unit in heating season; is the water inlet temperature on the load side of the ground source heat pump unit, i.e. the hot water return temperature, in °C; The outlet water temperature of the ground source heat pump unit, i.e. the inlet water temperature of the shallow soil source, in °C; is the unit load rate, and the ground source heat pump unit operating load in the heating season Rated heat load of ground source heat pump unit in heating season ratio.

[0107] According to an embodiment of the present invention, the design parameters of the shallow soil source and the ground source heat pump unit, the meteorological parameters, the design parameters of the solar collector, the design parameters of the hot water storage tank and the design parameters of the heat exchanger are input into the solar ground source heat pump model, and the heat transfer amount transmitted from the solar collector to the shallow soil source is output:

[0108] In the cooling season, it can be expressed as follows (21):

[0109] (twenty one)

[0110] In the heating season: it can be expressed as follows (22):

[0111] (twenty two)

[0112] The superscript 0 indicates the first simulation calculation for the solar ground source heat pump system. The total power of the ground source heat pump unit in the first simulation calculation, in kW; is the number of operating ground source heat pump units; The cooling power of the ground source heat pump unit in the cooling season, in kW; is the input heat of the shallow soil source, that is, the target heat gain, in kWh; The rated cooling load of the ground source heat pump unit in the cooling season, in kW; The working time of the ground source heat pump unit in the cooling season, in hours; The heating power of the ground source heat pump unit in the heating season, in kW; The heat output of the shallow soil source, i.e. the target heat, is in kWh; The rated heat load of the ground source heat pump unit in the heating season, in kW; It is the working time of the ground source heat pump unit in the heating season, in hours.

[0113] Since the heat exchange process of the ground source heat pump is mainly affected by the underground heat source temperature and the heat pump operating parameters, both of which are key factors in heat balance. The underground heat source temperature is a dynamically changing variable, which is affected by factors such as the surrounding soil and groundwater flow. Therefore, the calculation formula of the heat balance equation can be shown as follows (23):

[0114] The first simulation calculates the amount of heat to be replenished:

[0115] (twenty three)

[0116] The iterative calculation of the heat to be supplemented during optimization is shown in the following formula (24):

[0117] (twenty four)

[0118] in, The heat required to be supplemented for the first simulation calculation is the heat to be supplemented, in kWh; is the input heat of the shallow soil source, that is, the target heat gain, in kWh; The heat output of the shallow soil source, i.e. the target heat, is in kWh; The cumulative heat added to the solar thermal collector is in kWh; In order for the soil to accumulate cold, additional heat is required, measured in kWh.

[0119] The threshold can be determined according to the actual situation, for example, it can be zero. When ≤0, stop the iterative calculation and determine the target heat value.

[0120] According to the embodiments of the present invention, the present invention can accurately predict the performance of the system under different working conditions by simulating the interaction between the solar energy system and the ground source heat pump system. By optimizing the energy flow and scheduling between the solar energy system and the ground source heat pump system in real time, energy waste is effectively avoided, thereby significantly improving the overall energy efficiency of the system.

[0121] According to an embodiment of the present invention, the above equations (1) to (24) can be used as an overall simulation algorithm, which can dynamically adjust the operating status of various modules such as solar collectors, ground source heat pumps, hot water storage tanks and heat exchangers, and perform optimal control according to external environmental conditions such as sunshine and temperature changes and internal load requirements. For example, when solar energy is available, solar energy is used for heating first to avoid excessive reliance on the ground source heat pump system, thereby reducing the operating cost of the system.

[0122] According to the embodiments of the present invention, through simulation calculation of the solar ground source heat pump system, the mutual influence between the modules can be effectively predicted and controlled, and the system instability caused by incoordination or failure can be reduced. For example, by identifying potential failures or performance degradation trends in advance, the system can adjust the operation strategy in time to avoid unnecessary downtime or losses, thereby improving the reliability and stability of the overall system.

[0123] According to an embodiment of the present invention, the simulation method of the solar ground source heat pump system may include the above Figure 2In addition to the operations S210~S220 shown, it may also include: determining the total heat collection and heat collection time of the solar collector based on the target heat collection; determining the time interval based on the heat collection time and the preset time period; and performing simulation calculations on the time interval of the ground source heat pump system to obtain the performance parameters of the shallow soil source and the performance parameters of the ground source heat pump unit.

[0124] According to an embodiment of the present invention, the total heat collection of the solar thermal collector can be obtained according to the difference between the initial heat collection and the target heat collection, and the heat collection time can be obtained according to the ratio of the total heat collection to the heat transfer. The heat collection time can also be determined according to the number of iterative calculations.

[0125] According to an embodiment of the present invention, after the iteration is terminated, only the ground source heat pump system may be simulated, and the simulation time may be a determined time interval.

[0126] According to an embodiment of the present invention, the performance parameters of the shallow soil source may include at least one of the following: shallow soil source water inlet temperature, shallow soil source water outlet temperature, shallow soil source total heat intake and shallow soil source total heat gain. The performance parameters of the ground source heat pump unit may include the total power of the ground source heat pump unit.

[0127] According to an embodiment of the present invention, after the iteration is terminated, the outlet water temperature of the solar thermal collector and the near water temperature of the solar thermal collector may also be determined.

[0128] According to the embodiments of the present invention, the simulation method of the solar ground source heat pump system provided by the present invention can not only help optimize the system operation in real time, but also optimize the system layout in the design stage. By simulating the effects of different system configurations and interconnection methods, the best system architecture is selected, so that the initial investment and subsequent maintenance costs are relatively minimized, while ensuring the economy of long-term operation.

[0129] According to the embodiments of the present invention, through reasonable system coupling and optimized scheduling, the solar ground source heat pump system can make full use of renewable energy such as solar energy, reduce dependence on traditional energy, and reduce operating costs. Especially in the case of large fluctuations in energy prices, this optimization can reduce the energy procurement cost of the system. In addition, the use of renewable energy helps to reduce greenhouse gas emissions such as carbon dioxide, and has less impact on the environment.

[0130] According to the embodiments of the present invention, the simulation method of the solar ground source heat pump system provided by the present invention has strong adaptability and can provide customized solutions according to different climatic conditions, building load requirements and technical characteristics of ground source heat pumps. This enables the system to be widely used in various types of buildings (such as residential, commercial buildings, industrial facilities, etc.) and in different geographical locations and climatic environments, with strong adaptability.

[0131] According to the embodiments of the present invention, a large amount of real-time data, such as temperature, humidity, sunshine intensity, equipment status, etc., can be automatically collected and processed during simulation operation, and optimized and scheduled through intelligent algorithms to achieve the purpose of automatic adjustment, real-time monitoring and fault warning, thereby greatly improving the intelligence level of the system. This intelligent operation not only reduces the need for manual intervention, but also effectively improves operating efficiency and response speed.

[0132] According to the embodiments of the present invention, by dynamically coupling and adjusting each system in real time, excessive load or unreasonable working state is avoided, equipment loss is reduced, and the service life of the ground source heat pump system is extended. Each system of the solar ground source heat pump system can be dynamically adjusted according to load demand, avoiding failure or damage caused by long-term overload operation during operation.

[0133] According to an embodiment of the present invention, the simulation method of the solar ground source heat pump system provided by the present invention can support the switching of different operating modes, such as optimal efficiency mode, energy saving mode, fast start mode, etc. This enables the solar ground source heat pump system to switch between different modes according to external requirements and operating conditions, and flexibly respond to various working environments.

[0134] Figure 3 A block diagram of a simulation device for a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0135] like Figure 3 As shown, the simulation device 300 of the solar ground source heat pump system includes a first calculation module 310 and a second calculation module 320 .

[0136] The first calculation module 310 is used to perform simulation calculations on the ground source heat pump system within a preset time period based on the design parameters of the shallow soil source and the ground source heat pump unit, and obtain the initial heat extraction of the shallow soil source within the preset time period, wherein the initial heat extraction is used to characterize the amount of heat that the shallow soil source needs to obtain within the preset time period before optimization.

[0137] The second calculation module 320 is used to simulate the ground source heat pump system and the solar energy system based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the water storage tank and design parameters of the heat exchanger, to obtain the heat transfer from the solar collector to the shallow soil source, optimize the initial heat extraction, and obtain the target heat extraction.

[0138] According to an embodiment of the present invention, the solar ground source heat pump system includes: a ground source heat pump system and a solar energy system, the ground source heat pump system includes a shallow soil source and a ground source heat pump unit, and the solar energy system includes a solar collector, a hot water storage tank and a heat exchanger.

[0139] According to an embodiment of the present invention, the simulation device 300 of the solar ground source heat pump system further includes: a first model building module, a second model building module, a third model building module and a fourth model building module.

[0140] The first model building module is used to construct a ground source heat pump sub-model based on the Green's function method, the linear superposition principle, and the design parameters of the shallow soil source and ground source heat pump unit. The second model building module is used to build a collection heat conservation sub-model based on the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium, the temperature of the solar collector surface, the ambient temperature, the solar radiation intensity, and the temperature change of the working medium entering and leaving the solar collector. The third model building module is used to build a dynamic heat balance calculation sub-model based on the heat transfer process of the hot water storage tank, the mass of water in the hot water storage tank, the specific heat capacity of the working medium of the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank, the external surface area of ​​the hot water storage tank, the collection heat of the solar collector, and the temperature change of the working medium entering and leaving the hot water storage tank. The fourth model building module is used to determine the heat capacity rate according to the specific heat capacity of the working medium of the heat exchanger and the mass flow rate of the working medium of the heat exchanger; based on the heat transfer unit number method, determine the heat capacity rate of the fluid at the first temperature and the fluid at the second temperature according to the heat transfer coefficient of the heat exchanger and the heat transfer area of ​​the heat exchanger; based on the minimum value of the heat capacity rates of the fluid at the first temperature and the fluid at the second temperature, according to the fluid at the first temperature or the fluid at the second temperature and the temperature change of the fluid, build a heat exchange rate sub-model.

[0141] According to an embodiment of the present invention, the simulation device 300 of the solar ground source heat pump system further includes: a first determination module, a second determination module and a third calculation module.

[0142] The first determination module is used to determine the total heat collection and heat collection time of the solar collector based on the target heat collection. The second determination module is used to determine the time interval based on the heat collection time and the preset time period. The third calculation module is used to perform simulation calculations on the ground source heat pump system for the time interval to obtain the performance parameters of the shallow soil source and the performance parameters of the ground source heat pump unit.

[0143] According to an embodiment of the present invention, any multiple modules in the first computing module 310 and the second computing module 320 can be combined into one module for implementation, or any one of the modules can be split into multiple modules. Alternatively, at least part of the functions of one or more of these modules can be combined with at least part of the functions of other modules and implemented in one module. According to an embodiment of the present invention, at least one of the first computing module 310 and the second computing module 320 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application-specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation methods of software, hardware and firmware or in any appropriate combination of any of them. Alternatively, at least one of the first computing module 310 and the second computing module 320 can be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding function can be executed.

[0144] It should be noted that the simulation device part of the solar ground source heat pump system in the embodiment of the present invention corresponds to the simulation method part of the solar ground source heat pump system in the embodiment of the present invention. The description of the simulation device part of the solar ground source heat pump system specifically refers to the simulation method part of the solar ground source heat pump system, which will not be repeated here.

[0145] Figure 4 A block diagram of an electronic device suitable for implementing a simulation method for a solar ground source heat pump system according to an embodiment of the present invention is shown.

[0146] like Figure 4 As shown, the electronic device 400 according to an embodiment of the present invention includes a processor 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage part 408 to a random access memory (RAM) 403. The processor 401 may include, for example, a general-purpose microprocessor (such as a CPU), an instruction set processor and / or a related chipset and / or a special-purpose microprocessor (for example, an application-specific integrated circuit (ASIC)), etc. The processor 401 may also include an onboard memory for caching purposes. The processor 401 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present invention.

[0147] In RAM 403, various programs and data required for the operation of electronic device 400 are stored. Processor 401, ROM 402 and RAM 403 are connected to each other via bus 404. Processor 401 performs various operations of the method flow according to the embodiment of the present invention by executing the programs in ROM 402 and / or RAM 403. It should be noted that the program can also be stored in one or more memories other than ROM 402 and RAM 403. Processor 401 can also perform various operations of the method flow according to the embodiment of the present invention by executing the programs stored in one or more memories.

[0148] According to an embodiment of the present invention, the electronic device 400 may further include an input / output (I / O) interface 405, which is also connected to the bus 404. The electronic device 400 may further include one or more of the following components connected to the input / output (I / O) interface 405: an input portion 406 including a keyboard, a mouse, etc.; an output portion 407 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage portion 408 including a hard disk, etc.; and a communication portion 409 including a network interface card such as a LAN card, a modem, etc. The communication portion 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the input / output (I / O) interface 405 as needed. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as needed, so that a computer program read therefrom is installed into the storage portion 408 as needed.

[0149] The present invention also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiment; or may exist independently without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present invention is implemented.

[0150] According to an embodiment of the present invention, the computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, it may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, an apparatus or a device. For example, according to an embodiment of the present invention, the computer-readable storage medium may include the ROM 402 and / or RAM 403 described above and / or one or more memories other than ROM 402 and RAM 403.

[0151] It will be appreciated by those skilled in the art that the features described in the various embodiments of the present invention may be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, without departing from the spirit and teachings of the present invention, the features described in the various embodiments of the present invention may be combined and / or combined in various ways. All of these combinations and / or combinations fall within the scope of the present invention.

[0152] The embodiments of the present invention are described above. However, these embodiments are only for the purpose of illustration, and are not intended to limit the scope of the present invention. Although each embodiment is described above, it does not mean that the measures in each embodiment cannot be used in combination. The scope of the present invention is defined by the attached claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A simulation method for a solar ground source heat pump system, characterized in that: The solar ground source heat pump system comprises: a ground source heat pump system and a solar energy system, wherein the ground source heat pump system comprises a shallow soil source and a ground source heat pump unit, and the solar energy system comprises a solar collector, a hot water storage tank and a heat exchanger; The method comprises: Based on the design parameters of the shallow soil source and the ground source heat pump unit, a simulation calculation is performed on the ground source heat pump system within a preset time period to obtain an initial heat intake of the shallow soil source within the preset time period, wherein the initial heat intake is used to characterize the heat that the shallow soil source needs to obtain within the preset time period before optimization, so as to determine the heat accumulation fluctuation on the ground source side; Input the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, the design parameters of the solar collector, the design parameters of the hot water storage tank and the design parameters of the heat exchanger into the solar ground source heat pump model, and output the heat transfer amount transmitted from the solar collector to the shallow soil source; Determining the amount of heat to be supplemented based on the heat transfer and the initial heat intake; When it is determined that the amount of heat to be supplemented is less than or equal to a threshold, determining a target amount of heat based on the amount of heat to be supplemented; When it is determined that the amount of heat to be supplemented is greater than the threshold, iterative calculation is performed on the solar ground source heat pump model until the amount of heat to be supplemented determined after iteration is less than or equal to the threshold, and then the iterative calculation is stopped; Based on the amount of heat to be supplemented determined after iteration, the target amount of heat is determined.

2. The method according to claim 1, characterized in that The solar ground source heat pump model includes a ground source heat pump sub-model, an energy conservation sub-model for the solar collector, a dynamic heat balance calculation sub-model, and a heat exchange rate sub-model; The method comprises inputting the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, the design parameters of the solar collector, the design parameters of the hot water storage tank and the design parameters of the heat exchanger into a solar ground source heat pump model, and outputting the heat transfer amount transmitted from the solar collector to the shallow soil source, including: Input the design parameters of the shallow soil source and the ground source heat pump unit into the ground source heat pump sub-model, and output the outlet water temperature of the shallow soil source; Input the meteorological parameters and the design parameters of the solar thermal collector into the energy conservation sub-model, and output the relationship between the heat collected by the solar thermal collector and the temperature of the hot water storage tank; The relationship between the heat collected by the solar collector and the temperature of the hot water storage tank, the design parameters of the hot water storage tank and the temperature of the hot water storage tank are input into the dynamic heat balance calculation sub-model, and the outlet temperature of the hot water storage tank is output; The outlet water temperature of the shallow soil source, the outlet temperature of the hot water storage tank and the design parameters of the heat exchanger are input into the heat exchange rate sub-model, and the heat transfer amount transmitted from the solar thermal collector to the shallow soil source is output; The ground source heat pump sub-model is constructed based on the Green's function method, the linear superposition principle, and the design parameters of the shallow soil source and the ground source heat pump unit; The energy conservation sub-model for the solar thermal collector is constructed based on the energy conservation principle, the design parameters of the solar thermal collector, the meteorological parameters, and the temperature change of the working medium entering and exiting the solar thermal collector; The dynamic heat balance calculation sub-model is constructed based on the design parameters of the hot water storage tank, the temperature change of the working medium entering and leaving the hot water storage tank, and the heat transfer process of the hot water storage tank; The heat exchange rate sub-model is constructed based on the heat transfer unit number method, the design parameters of the heat exchanger and the heat exchange process of the heat exchanger.

3. The method according to claim 2, characterized in that The design parameters of the solar collector include the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium and the temperature of the solar collector surface; the meteorological parameters include the ambient temperature and the solar radiation intensity; and the energy conservation submodel includes the heat conservation submodel; The method further comprises: The heat conservation submodel is constructed based on the absorptivity of the solar collector surface, the surface area of ​​the solar collector, the emissivity of the solar collector surface, the specific heat capacity of the working medium, the mass flow rate of the working medium, the temperature of the solar collector surface, the ambient temperature, the solar radiation intensity, and the temperature change of the working medium entering and exiting the solar collector.

4. The method according to claim 2, characterized in that: The design parameters of the hot water storage tank include: the mass of water in the hot water storage tank, the specific heat capacity of the working medium of the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank and the external surface area of ​​the hot water storage tank; The method further comprises: Based on the heat transfer process of the hot water storage tank, the dynamic heat balance calculation sub-model is constructed according to the mass of water in the hot water storage tank, the specific heat capacity of the working medium in the hot water storage tank, the overall thermal conductivity coefficient of the hot water storage tank, the external surface area of ​​the hot water storage tank, the collection amount of the solar collector and the temperature change of the working medium entering and leaving the hot water storage tank.

5. The method according to claim 2, characterized in that: The design parameters of the heat exchanger include the specific heat capacity of the working medium of the heat exchanger, the mass flow rate of the working medium of the heat exchanger, the heat transfer coefficient of the heat exchanger and the heat transfer area of ​​the heat exchanger; The method further comprises: Determining a heat capacity rate according to a specific heat capacity of a working medium of the heat exchanger and a mass flow rate of the working medium of the heat exchanger; Based on the heat transfer unit number method, the heat capacity ratio of the fluid at the first temperature and the fluid at the second temperature is determined according to the heat transfer coefficient of the heat exchanger and the heat transfer area of ​​the heat exchanger; The heat exchange rate sub-model is constructed based on a minimum value of the heat capacity ratios of the fluid at the first temperature and the fluid at the second temperature, according to the fluid at the first temperature or the fluid at the second temperature and the temperature change of the fluid.

6. The method according to claim 1, characterized in that The method further comprises: Based on the target heat collection, determining the total heat collection amount and heat collection time of the solar thermal collector; Determine a time interval based on the heat collection time and the preset time period; The geothermal heat pump system is simulated and calculated in the time interval to obtain the performance parameters of the shallow soil source and the performance parameters of the geothermal heat pump unit.

7. A simulation device for a solar ground source heat pump system, characterized in that: The solar ground source heat pump system comprises: a ground source heat pump system and a solar energy system, wherein the ground source heat pump system comprises a shallow soil source and a ground source heat pump unit, and the solar energy system comprises a solar collector, a hot water storage tank and a heat exchanger; The device comprises: A first calculation module is used to perform simulation calculations on the ground source heat pump system within a preset time period based on the design parameters of the shallow soil source and the ground source heat pump unit, and obtain an initial heat intake of the shallow soil source within the preset time period, wherein the initial heat intake is used to characterize the heat that the shallow soil source needs to obtain within the preset time period before optimization; and A second calculation module is used to simulate and calculate the heat transfer amount transmitted from the solar collector to the shallow soil source based on the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, design parameters of the solar collector, design parameters of the hot water storage tank and design parameters of the heat exchanger, and optimize the initial heat extraction to obtain a target heat extraction amount. Wherein, the second calculation module is specifically used for: Input the design parameters of the shallow soil source and the ground source heat pump unit, meteorological parameters, the design parameters of the solar collector, the design parameters of the hot water storage tank and the design parameters of the heat exchanger into the solar ground source heat pump model, and output the heat transfer amount transmitted from the solar collector to the shallow soil source; Determining the amount of heat to be supplemented based on the heat transfer and the initial heat intake; When it is determined that the amount of heat to be supplemented is less than or equal to a threshold, determining the target amount of heat based on the amount of heat to be supplemented; When it is determined that the amount of heat to be supplemented is greater than the threshold, iterative calculation is performed on the solar ground source heat pump model until the amount of heat to be supplemented determined after iteration is less than or equal to the threshold, and then the iterative calculation is stopped; Based on the amount of heat to be supplemented determined after iteration, the target amount of heat is determined.

8. An electronic device comprising: one or more processors; a memory for storing one or more computer programs, It is characterized in that the one or more processors execute the one or more computer programs to implement the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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