Heat pump system design method and device based on dynamic load and electronic equipment

Abstract

The invention provides a heat pump system design method and device based on a dynamic load, electronic equipment and a storage medium, and relates to the technical field of heat pump system design, the method comprises the following steps: executing a system design process according to a current load distribution rate, and obtaining a ground source heat pump arrangement strategy and an air source heat pump equipment arrangement strategy according to the current load distribution rate; the rated heat supply amount of the ground source heat pump and the rated heat supply amount of the air source heat pump are updated through the building dynamic heat load; updating the ground source heat pump arrangement strategy and the air source heat pump equipment arrangement strategy according to the heat pump type selection strategy and the water pump type selection strategy to obtain a dynamic load heat pump system; and the current load distribution rate is updated according to the economic indexes and the energy-saving indexes, the system design process is executed again, the steps are repeated until the preset number of times is reached, and the economic indexes and the energy-saving indexes are screened through preset requirements to obtain the target dynamic load heat pump system. According to the invention, the operation cost is saved, and the electricity demand of a user is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump system design, and in particular to a heat pump system design method, device and electronic equipment based on dynamic load. Background Art

[0002] Heat pump systems transfer heat from the air, water, or underground soil into a building to provide heating or hot water. Conversely, in summer, they extract heat from the building and release it to the outside environment for cooling. Heat pump systems significantly improve energy efficiency, and their long-term operating costs are far lower than those of traditional equipment.

[0003] Currently, the main heat pump systems available on the market include air-source heat pumps and ground-source heat pumps. Ground-source heat pumps exchange heat with the soil through underground pipes. When selecting a suitable heat pump system for a building, it's necessary to assess the building's heating and cooling needs to ensure the selected equipment can meet the requirements for operation in the most extreme weather conditions. Since building loads fluctuate cyclically with changes in ambient temperature, ground-source heat pumps can result in high initial installation costs. Air-source heat pumps, on the other hand, extract heat from outdoor air for indoor heating. However, they have poor low-temperature adaptability, and their performance degrades in extreme cold conditions, resulting in high operating costs and high energy consumption. Summary of the Invention

[0004] The present invention aims to solve at least one of the above problems.

[0005] To solve the above problems, the present invention provides a heat pump system design method, device and electronic equipment based on dynamic load.

[0006] In a first aspect, the present invention provides a heat pump system design method based on dynamic load, comprising: Obtaining a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump; Executing a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The current load distribution rate is updated according to the economic index and the energy-saving index, and the system design process is returned to be executed. The above steps are repeated until a preset number of times is reached, and the target dynamic load heat pump system is obtained by screening the economic index and the energy-saving index according to preset requirements.

[0007] Optionally, obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating capacity and the air source heat pump rated heating capacity includes: Obtaining an estimated geothermal well heat intake based on the rated heat supply of the geothermal heat pump; The rated heating capacity of the ground source heat pump is: , in, is the rated heating supply of the ground source heat pump, is the current load distribution rate, is the maximum load value of the building; Obtaining the ground source heat pump arrangement strategy based on the estimated heat intake of the geothermal well; Obtaining the air source heat pump equipment layout strategy according to the rated heating capacity of the air source heat pump; The rated heating capacity of the air source heat pump is: , in, The rated heating capacity of the air source heat pump.

[0008] Optionally, obtaining the ground source heat pump arrangement strategy according to the estimated heat extraction of the geothermal well includes: Determining the ground source heat pump layout strategy based on the estimated geothermal well heat intake and geological information; The layout strategy of the ground source heat pump is as follows: , Wherein, Q is the estimated heat intake of the geothermal well, n is the number of geothermal wells in the ground source heat pump layout strategy, c is the specific heat capacity of the heat exchange fluid, m is the working fluid flow rate of the heat exchanger, is the average temperature of the geological information, is the inlet and outlet temperature of the heat exchanger.

[0009] Optionally, the updating of the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump by using the dynamic heat load of the building to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump includes: When the building heat load is less than or equal to the rated heat supply of the ground source heat pump, the building heat load is used as the hourly heat supply of the ground source heat pump in the corresponding unit time; The hourly heat supply of the ground source heat pump per unit time is: , in, The hourly heat supply of the ground source heat pump per unit time is is the dynamic heat load of the building; Obtaining the hourly heating supply of the air source heat pump within a corresponding unit time according to the building heat load and the hourly heating supply of the ground source heat pump; The hourly heating amount of the air source heat pump per unit time is: , in, The hourly heat supply of the air source heat pump per unit time; When the building heat load is greater than the rated heating supply of the ground source heat pump, the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump are used as the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump in the corresponding unit time.

[0010] Optionally, obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump includes: The power consumption of the ground source heat pump, the power consumption of the air source heat pump and the power consumption of the water pump are obtained by the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; Wherein, the power consumption of the ground source heat pump is: , in, is the power consumption of the ground source heat pump, Supplying heat to the ground source heat pump hourly, is the actual heating power of the buried pipe heat exchanger, is the coefficient of performance of the heat pump; The power consumption of the air source heat pump is: , in, is the power consumption of the air source heat pump, Supplying heat to the air source heat pump hourly, is the seasonal performance factor of the air source heat pump; Wherein, the power consumption of the water pump is: , in, is the maximum water flow, P pump is the power consumption of the water pump, g is the acceleration of gravity, H is the head of the water pump, and η is the efficiency of the water pump; The heat pump selection strategy and the water pump selection strategy are obtained according to the power consumption of the ground source heat pump, the power consumption of the water pump and the power consumption of the air source heat pump.

[0011] Optionally, obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system includes: Obtaining the initial cost of system equipment and the power consumption of system equipment through the dynamic load heat pump system, wherein the power consumption of system equipment includes the power consumption of ground source heat pump, the power consumption of air source heat pump and the power consumption of water pump; Obtaining the energy-saving index according to the power consumption of the system equipment; The energy-saving index is: , in, is the energy-saving index, is the power consumption of the ground source heat pump, is the power consumption of the air source heat pump, The power consumption of the water pump; The power consumption of the ground source heat pump is: , The power consumption of the air source heat pump is: , The power consumption of the water pump is: , in, is the power consumption of the ground source heat pump, is the power consumption of the air source heat pump, is the power consumption of the water pump, τ is the time interval, and N is the preset system operation time; The economic indicator is obtained according to the initial cost of the system equipment and the power consumption of the system equipment.

[0012] Optionally, obtaining the economic indicator according to the initial cost of the system equipment and the power consumption of the system equipment includes: Obtaining ground source heat pump costs, air source heat pump costs, and water pump costs based on the initial cost of the system equipment and the power consumption of the system equipment, wherein the initial cost of the system equipment includes the initial cost of the heat pump, the initial cost of the air source heat pump, and the initial cost of the water pump; The ground source heat pump fee is: , in, For the ground source heat pump cost, is the initial cost of the ground heat exchanger, is the initial cost of the ground source heat pump, is the power consumption of the ground source heat pump, For electricity prices; Among them, the air source heat pump cost is: , in, For the air source heat pump cost, is the initial cost of the air source heat pump, The power consumption of the air source heat pump; Among them, the water pump fee is: , in, For the water pump fee, is the initial cost of the water pump, The power consumption of the water pump; Obtaining the economic indicator according to the ground source heat pump cost, the air source heat pump cost, and the water pump cost; The economic indicators are: , in, is the economic indicator.

[0013] In a second aspect, the present invention provides a heat pump system design device based on dynamic loads, comprising: an acquisition module for acquiring a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of a ground source heat pump; a processing module, configured to execute a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The processing unit is further configured to update the current load distribution rate according to the economic index and the energy-saving index, return to execute the system design process, repeat the above steps until a preset number of times is reached, and obtain a target dynamic load heat pump system by screening the economic index and the energy-saving index according to preset requirements.

[0014] In a third aspect, the present invention provides an electronic device comprising a memory and a processor; The memory is used to store computer programs; The processor is configured to implement the heat pump system design method based on dynamic load as described in the first aspect when executing the computer program.

[0015] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the heat pump system design method based on dynamic load as described in the first aspect is implemented.

[0016] The beneficial effects of the heat pump system design method, device and electronic equipment based on dynamic load of the present invention are as follows: obtaining the current load distribution rate to obtain the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, obtaining the initial ground source heat pump layout strategy and the initial air source heat pump equipment layout strategy, and distributing the load of the air source heat pump and the ground source heat pump by the rated heating supply. The corresponding hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump are updated using the dynamic heat load of the building, taking into account the impact of the building load change on the heat pump system design. The heat pump and water pump are selected to obtain the target ground source heat pump layout strategy and the target air source heat pump equipment layout strategy, and the loads borne by the two systems are reasonably distributed so that the resulting heat pump system can better meet user needs. By updating the current load distribution rate, multiple dynamic load heat pump systems are obtained. The dynamic load heat pump system that best meets the preset needs is screened out as the target dynamic load heat pump system through economic indicators and energy-saving indicators. By integrating and coupling the ground source heat pump and the air source heat pump, the heat pump system can meet user needs and avoid the problems of high cost and high energy consumption caused by using only ground source heat pumps or air source heat pumps for energy supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A schematic flow chart of a heat pump system design method based on dynamic load according to an embodiment of the present invention; Figure 2 This is a schematic diagram of hourly heating provided by a ground source heat pump coupled with an air source heat pump according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a heat pump system design device based on dynamic load according to an embodiment of the present invention; Figure 4 The figure is a schematic structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the 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.

[0019] 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. In addition, 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.

[0020] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0021] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0022] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0023] In related technologies, geothermal heat pump systems, also known as ground-source heat pumps (GSHPs), use ground energy (soil, groundwater, surface water, low-temperature geothermal water, and tailwater) as a cooling source for summer cooling and a low-temperature heat source for winter heating. They simultaneously provide heating, cooling, and domestic hot water. They replace traditional chillers and boilers for air conditioning, heating, and heating, offering an effective way to improve urban atmospheric conditions and conserve energy. They are also a new development direction for ground-source energy utilization in China. Air-source heat pumps are energy-saving devices that utilize high-grade energy to transfer heat from a low-grade heat source, air, to a higher-grade heat source. They are a form of heat pump. As the name suggests, a heat pump, like a pump, can convert low-grade heat energy (such as heat contained in air, soil, and water) that cannot be directly utilized directly into usable high-grade heat energy, thereby saving some high-grade energy (such as coal, gas, oil, and electricity).

[0024] In response to the problems existing in the above-mentioned related technologies, this embodiment provides a heat pump system design method, device and electronic equipment based on dynamic load.

[0025] like Figure 1 As shown, an embodiment of the present invention provides a heat pump system design method based on dynamic load, including: A current load distribution rate is obtained, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump.

[0026] Specifically, first calculate the building load, obtain its hourly load data, and find the maximum load value L max Once the maximum load value is found, it becomes a fixed value and does not change. The maximum load value is used to determine the rated capacity of each device, while the hourly dynamic load value serves as the basis for calculating system power consumption and operating costs.

[0027] Executing a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Economic indicators and energy-saving indicators are obtained through the dynamic load heat pump system.

[0028] Specifically, the geothermal heat pump layout strategy includes confirming the depth and number of geothermal wells, selecting the depth of the geothermal wells based on the geological information of the building, and selecting a reasonable depth of the geothermal wells based on the soil conditions of the building. On the other hand, the heat exchange capacity of a single geothermal well can be estimated through geological information, and the number of geothermal wells to be set can be determined using the obtained rated heating capacity of the geothermal heat pump. The air source heat pump equipment layout strategy is used to indicate the model and quantity of air source heat pump equipment. When selecting equipment, as few devices as possible are selected on the premise that the total rated heating capacity of the selected single or multiple devices is greater than or equal to the required rated value. The rated heating capacity of the air source heat pump is input into the pre-trained air source heat pump equipment selection model to obtain the initial air source heat pump equipment layout strategy. The pre-trained air source heat pump equipment selection model mainly uses air source heat pump equipment of various types of rated power as a training data set to ensure that as few devices as possible can be selected from the equipment model combination that best meets the rated heating capacity of the air source heat pump. By selecting the heat pump and water pump models, we obtain the heat pump selection strategy and water pump selection strategy. Combined with the previously selected geothermal well depth and number, and the air source heat pump equipment model and number, we update the heat pump and water pump models selected in the geothermal heat pump layout strategy and air source heat pump equipment layout strategy. By combining these updated strategies, we ultimately obtain a dynamic load heat pump system. The process for selecting heat pump and water pump models is consistent with the process for selecting air source heat pump equipment models.

[0029] The current load distribution rate is updated according to the economic index and the energy-saving index, and the system design process is returned to be executed. The above steps are repeated until a preset number of times is reached, and the target dynamic load heat pump system is obtained by screening the economic index and the energy-saving index according to preset requirements.

[0030] Specifically, the economic indicator is used to represent the system cost, including the initial cost of the system equipment and the electricity cost of the equipment operation. The energy-saving index is used to represent the power consumption of the system equipment. The difference between the economic indicator and the preset economic indicator is multiplied by the first adjustment parameter, the difference between the energy-saving index and the preset energy-saving index is multiplied by the second adjustment parameter, the sum of the two is multiplied by the current load distribution rate, and the updated current load distribution rate is obtained. When the economic indicator is greater than the preset economic indicator, it means that the current cost is high and the current load distribution rate needs to be reduced, otherwise it should be increased. When the energy-saving index is greater than the preset energy-saving index, the current load distribution rate needs to be increased, otherwise it should be reduced. The economic indicator and the energy-saving index are filtered according to the preset requirements. The preset requirements include the preset economic indicator and the preset energy-saving index. The dynamic load heat pump system with the smallest difference between the economic indicator and the energy-saving index and the preset requirements is selected. When the difference is the same, the system with the economic indicator closer to the preset requirements or the system with the energy-saving index closer to the preset requirements is selected according to the user's personal needs.

[0031] In some more specific embodiments, the system design process is performed, given a current load distribution ratio. Using numerical simulation, the power consumption required for heating by the coupled system over several years is calculated, assuming the hourly heating capacity of the ground-source heat pump and the air-source heat pump. Based on this power consumption and local electricity prices, operating costs can be calculated. Equipment selection is performed based on the rated heating capacity of each device, and the initial investment can be determined. This allows the total cost and energy consumption of the coupled system over several years, i.e., economic and energy-saving indicators, to be determined, given the current load distribution ratio.

[0032] In this embodiment, the current load distribution rate is obtained to obtain the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, and the initial ground source heat pump layout strategy and the initial air source heat pump equipment layout strategy are obtained. The load of the air source heat pump and the ground source heat pump is distributed according to the rated heating supply. The corresponding hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump are updated using the dynamic heat load of the building, taking into account the impact of building load changes on the design of the heat pump system. The heat pump and water pump are selected to obtain the target ground source heat pump layout strategy and the target air source heat pump equipment layout strategy, and the load borne by the two systems is reasonably distributed so that the resulting heat pump system can better meet user needs. By updating the current load distribution rate, multiple dynamic load heat pump systems are obtained. The dynamic load heat pump system that best meets the preset requirements is selected as the target dynamic load heat pump system based on economic indicators and energy-saving indicators. By integrating and coupling the ground source heat pump and the air source heat pump, the heat pump system can meet user needs and avoid the problems of high cost and high energy consumption associated with using only ground source heat pumps or air source heat pumps for energy supply.

[0033] Optionally, obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating capacity and the air source heat pump rated heating capacity includes: Obtaining an estimated geothermal well heat intake based on the rated heat supply of the geothermal heat pump; The rated heating capacity of the ground source heat pump is: , in, is the rated heating supply of the ground source heat pump, is the current load distribution rate, is the maximum load value of the building; Obtaining the ground source heat pump arrangement strategy based on the estimated heat intake of the geothermal well; Obtaining the air source heat pump equipment layout strategy according to the rated heating capacity of the air source heat pump; The rated heating capacity of the air source heat pump is: , in, The rated heating capacity of the air source heat pump.

[0034] Optionally, obtaining the ground source heat pump arrangement strategy according to the estimated heat extraction of the geothermal well includes: Determining the ground source heat pump layout strategy based on the estimated geothermal well heat intake and geological information; The layout strategy of the ground source heat pump is as follows: , Wherein, Q is the estimated heat intake of the geothermal well, n is the number of geothermal wells in the ground source heat pump layout strategy, c is the specific heat capacity of the heat exchange fluid, m is the working fluid flow rate of the heat exchanger, is the average temperature of the geological information, is the inlet and outlet temperature of the heat exchanger.

[0035] Specifically, the estimated heat intake of the geothermal well should be greater than the rated heat supply. The rated heat supply of the ground source heat pump plus the preset heat supply equals the estimated heat intake of the geothermal well. Based on the rated heat supply of the ground source heat pump and the local geological conditions, the depth and number of geothermal wells can be preliminarily determined using the estimation method. Among them, Q is the estimated heat intake of the geothermal well, kw, n is the number of geothermal wells in the initial ground source heat pump layout strategy, c is the specific heat capacity of the heat exchange fluid, kJ / (kg·℃), m is the working fluid flow rate of the heat exchanger, kg / s, is the average temperature of the geological information, °C, is the inlet and outlet temperature of the heat exchanger.

[0036] Optionally, the updating of the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump by using the dynamic heat load of the building to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump includes: When the building heat load is less than or equal to the rated heat supply of the ground source heat pump, the building heat load is used as the hourly heat supply of the ground source heat pump in the corresponding unit time; The hourly heat supply of the ground source heat pump per unit time is: , in, The hourly heat supply of the ground source heat pump per unit time is is the dynamic heat load of the building; Obtaining the hourly heating supply of the air source heat pump within a corresponding unit time according to the building heat load and the hourly heating supply of the ground source heat pump; The hourly heating amount of the air source heat pump per unit time is: , in, The hourly heat supply of the air source heat pump per unit time; When the building heat load is greater than the rated heating supply of the ground source heat pump, the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump are used as the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump in the corresponding unit time.

[0037] Specifically, combined Figure 2 As shown, the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump are discontinuous curves, which are used to represent the heating supply within the preset system operation time. Figure 2 This is the hourly heating diagram of the ground source heat pump coupled with the air source heat pump. The dotted line represents the hourly heating provided by the air source heat pump, and the dotted line represents the hourly heating provided by the ground source heat pump. Because the building load fluctuates hourly, the real-time heating provided by the ground source heat pump and the air source heat pump also varies during actual operation: , , Where, Q GSHP is the hourly heating power of the ground source heat pump, kW, L dyn is the building dynamic heat load, kW; Q ASHP is the hourly heating power of the air source heat pump, Q ASHP ≥(1-α) L max , is the maximum load value of the building.

[0038] In some more specific embodiments, DEST (Design and Evaluation Software for Thermal Environment) is used to obtain dynamic building heat loads. DEST is widely used in building energy simulation, dynamic heat load calculation, and indoor thermal comfort analysis. DEST accurately simulates the dynamic heat load of a building under various operating conditions. Inputting building models, material parameters, and meteorological data allows for simulation of the building's dynamic heat load.

[0039] In this optional embodiment, the dynamic heat load of the building is obtained through the DEST software, which can provide a scientific basis for building design, HVAC system optimization and energy-saving transformation, and help to better understand the thermal performance of the building.

[0040] Optionally, obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump includes: The power consumption of the ground source heat pump, the power consumption of the air source heat pump and the power consumption of the water pump are obtained by the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; Wherein, the power consumption of the ground source heat pump is: , in, is the power consumption of the ground source heat pump, Supplying heat to the ground source heat pump hourly, is the actual heating power of the buried pipe heat exchanger, is the coefficient of performance of the heat pump; The power consumption of the air source heat pump is: , in, is the power consumption of the air source heat pump, Supplying heat to the air source heat pump hourly, is the seasonal performance factor of the air source heat pump; Wherein, the power consumption of the water pump is: , in, is the maximum water flow, P pump is the power consumption of the water pump, g is the acceleration of gravity, H is the head of the water pump, and η is the efficiency of the water pump; The heat pump selection strategy and the water pump selection strategy are obtained according to the power consumption of the ground source heat pump, the power consumption of the water pump and the power consumption of the air source heat pump.

[0041] Specifically, the heat pump selection strategy is used to select heat pump models for ground-source heat pumps and air-source heat pumps, respectively. The water pump selection strategy is used to select water pump models for ground-source heat pumps and air-source heat pumps, respectively. The appropriate heat pump model is selected based on the power consumption of the ground-source heat pump and the power consumption of the air-source heat pump. The appropriate water pump model is selected based on the calculated water pump power consumption. The maximum water flow rate for the ground-source heat pump is obtained through software simulation, while the maximum water flow rate for the air-source heat pump is a fixed value obtained from the air source equipment model.

[0042] The heat source of the ground source heat pump comes from two parts: one is the underground heat exchanger to extract heat from the ground, and the other is the heat pump on the ground consumes electricity to reheat the underground water. , Among them, Q DBHE is the actual heating power of the buried pipe heat exchanger, kW; c w is the specific heat capacity of water, kJ / (kg·℃); m G is the water flow rate in the ground heat exchanger, kg / s; t G,in and t g,out are the inlet and outlet water temperatures of the buried pipe heat exchanger, ℃.

[0043] The underground portion requires only a water pump to drive the flow of the heat exchange fluid (water, for example) and no other energy input. Therefore, the energy consumption of the ground-source heat pump comes from the electricity consumed by the water pump and the heat pump. The energy consumption of the air-source heat pump, on the other hand, comes from the electricity consumed by the water pump and the air-source heat pump. OpenGeoSys (OGS) is an open-source scientific modeling software. In the field of geothermal energy utilization, OGS uses the Dual Continuum Finite Element Method (DC-FEM) to simulate the thermal interaction between underground heat pipes and surrounding underground heat pipes. Using OpenGeoSys, local geological parameters (geothermal gradient, underground rock and soil temperature, groundwater conditions, etc.) and the structural parameters of the buried heat exchanger (tube diameter, number of geothermal wells, etc.) are given. The simulation time is set and processed hourly load data is input.

[0044] Optionally, obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system includes: Obtaining the initial cost of system equipment and the power consumption of system equipment through the dynamic load heat pump system, wherein the power consumption of system equipment includes the power consumption of ground source heat pump, the power consumption of air source heat pump and the power consumption of water pump; Obtaining the energy-saving index according to the power consumption of the system equipment; The energy-saving index is: , in, is the energy-saving index, is the power consumption of the ground source heat pump, is the power consumption of the air source heat pump, The power consumption of the water pump; The power consumption of the ground source heat pump is: , The power consumption of the air source heat pump is: , The power consumption of the water pump is: , in, is the power consumption of the ground source heat pump, is the power consumption of the air source heat pump, is the power consumption of the water pump, τ is the time interval, and N is the preset system operation time; The economic indicator is obtained according to the initial cost of the system equipment and the power consumption of the system equipment.

[0045] Optionally, obtaining the economic indicator according to the initial cost of the system equipment and the power consumption of the system equipment includes: Obtaining ground source heat pump costs, air source heat pump costs, and water pump costs based on the initial cost of the system equipment and the power consumption of the system equipment, wherein the initial cost of the system equipment includes the initial cost of the heat pump, the initial cost of the air source heat pump, and the initial cost of the water pump; The ground source heat pump fee is: , in, For the ground source heat pump cost, is the initial cost of the ground heat exchanger, is the initial cost of the ground source heat pump, is the power consumption of the ground source heat pump, For electricity prices; Among them, the air source heat pump cost is: , in, For the air source heat pump cost, is the initial cost of the air source heat pump, The power consumption of the air source heat pump; Among them, the water pump fee is: , in, For the water pump fee, is the initial cost of the water pump, The power consumption of the water pump; Obtaining the economic indicator according to the ground source heat pump cost, the air source heat pump cost, and the water pump cost; The economic indicators are: , in, is the economic indicator.

[0046] In some more specific embodiments, a simulation of a building's heating load during the heating season was performed to determine the building's maximum load, Lmax, of 1701 kW. Given a current load distribution ratio, α, of 0.5, the geothermal well depth was initially determined to be 2500 meters, the number of wells to be two, and the rated heating capacity of 11 air-source heat pumps to be 80 kW. The processed load data was used as input for the simulation step. OpenGeoSys (open source software) was used to calculate the inlet and outlet water temperatures and flow rates of the ground heat exchanger in the ground-source heat pump. The maximum load the heat pump was required to handle was found to be 213.67 kW, and the maximum system water flow rate was 28.5 m³ / h. Consequently, the rated heating power of the heat pump equipment was determined to be 250 kW, and the rated flow rate of the water pump equipment to be 30 m³ / h. The power consumption and electricity costs of each component were calculated based on the operating parameters, and the initial investment for each component was calculated based on the selected equipment. The economic and energy-saving indicators for α = 0.5 were calculated using the described method. Using numerical simulation, given the hourly heating capacity of a ground-source heat pump and an air-source heat pump, the power consumption required for a coupled system to provide heating over several years is calculated. Based on this power consumption and local electricity prices, operating costs can be calculated. Equipment selection can be made based on the rated heating capacity of each device, and the initial investment can also be determined. This results in the total cost and energy consumption of the coupled system over several years, i.e., its economic and energy-saving performance indicators, for a given value of α. Given a range of α values, a range of economic and energy-saving indicators can be obtained. From these indicators, an appropriate solution can be selected based on the requirements. If none of the solutions meet the requirements, the depth and number of geothermal wells can be varied, and the above steps repeated to select the one that meets the requirements. Once a solution is selected, construction and equipment selection can proceed. By comparing different solutions, the best solution can be selected.

[0047] like Figure 3 As shown, an embodiment of the present invention provides a heat pump system design device based on dynamic load, comprising: An acquisition module 10 is configured to acquire a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump; A processing module 20 is configured to execute a system design process according to the current load distribution rate, wherein the system design process includes: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The processing unit 20 is further configured to update the current load distribution rate according to the economic index and the energy-saving index, return to execute the system design process, repeat the above steps until a preset number of times is reached, and obtain a target dynamic load heat pump system by screening the economic index and the energy-saving index according to preset requirements.

[0048] like Figure 4 As shown, an electronic device 400 provided by an embodiment of the present invention includes a memory 410 and a processor 420; the memory 410 is used to store a computer program; the processor 420 is used to implement the above-mentioned dynamic load-based heat pump system design method when executing the computer program.

[0049] In other words, an electronic device 400 includes a memory 410 and a processor 420 coupled to the memory 410; the memory 410 is configured to store a computer program; and the processor 420 is configured to perform the following operations when executing the computer program: Obtaining a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump; Executing a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The current load distribution rate is updated according to the economic index and the energy-saving index, and the system design process is returned to be executed. The above steps are repeated until a preset number of times is reached, and the target dynamic load heat pump system is obtained by screening the economic index and the energy-saving index according to preset requirements.

[0050] An embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the above-mentioned heat pump system design method based on dynamic load is implemented.

[0051] In other words, a non-volatile computer-readable storage medium stores a computer program, which, when executed by a processor, causes the processor to perform the following operations: Obtaining a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump; Executing a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The current load distribution rate is updated according to the economic index and the energy-saving index, and the system design process is returned to be executed. The above steps are repeated until a preset number of times is reached, and the target dynamic load heat pump system is obtained by screening the economic index and the energy-saving index according to preset requirements.

[0052] An electronic device 400 that can serve as a server or client of the present invention will now be described, which is an example of a hardware device that can be applied to various aspects of the present invention. The electronic device 400 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. The electronic device 400 can also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0053] Electronic device 400 includes a computing unit that can perform various appropriate actions and processes based on a computer program stored in a read-only memory (ROM) or a computer program loaded from a storage unit into a random access memory (RAM). The RAM can also store various programs and data required for device operation. The computing unit, ROM, and RAM are interconnected via a bus. An input / output (I / O) interface is also connected to the bus.

[0054] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM). In this application, the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network elements. Some or all of these units can be selected based on actual needs to achieve the objectives of the embodiments of the present invention. Furthermore, the functional units in the various embodiments of the present invention can be integrated into a single processing unit, each unit can exist physically separately, or two or more units can be integrated into a single unit. These integrated units can be implemented in either hardware or software functional units.

[0055] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A heat pump system design method based on dynamic load, characterized in that: include: Obtaining a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump; Executing a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The current load distribution rate is updated according to the economic index and the energy-saving index, and the system design process is returned to be executed. The above steps are repeated until a preset number of times is reached, and the target dynamic load heat pump system is obtained by screening the economic index and the energy-saving index according to preset requirements.

2. The heat pump system design method based on dynamic load according to claim 1, characterized in that: The method of obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply includes: Obtaining an estimated geothermal well heat intake based on the rated heat supply of the geothermal heat pump; The rated heating capacity of the ground source heat pump is: ， in, is the rated heating supply of the ground source heat pump, is the current load distribution rate, is the maximum load value of the building; Obtaining the ground source heat pump arrangement strategy based on the estimated heat intake of the geothermal well; Obtaining the air source heat pump equipment layout strategy according to the rated heating capacity of the air source heat pump; The rated heating capacity of the air source heat pump is: ， in, The rated heating capacity of the air source heat pump.

3. The heat pump system design method based on dynamic load according to claim 2, characterized in that: The obtaining of the ground source heat pump arrangement strategy based on the estimated heat extraction from the geothermal well includes: Determining the ground source heat pump layout strategy based on the estimated geothermal well heat intake and geological information; The layout strategy of the ground source heat pump is as follows: ， Wherein, Q is the estimated heat intake of the geothermal well, n is the number of geothermal wells in the ground source heat pump layout strategy, c is the specific heat capacity of the heat exchange fluid, m is the working fluid flow rate of the heat exchanger, is the average temperature of the geological information, is the inlet and outlet temperature of the heat exchanger.

4. The heat pump system design method based on dynamic load according to claim 1, characterized in that: The method of updating the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump by using the dynamic heat load of the building to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump includes: When the building heat load is less than or equal to the rated heat supply of the ground source heat pump, the building heat load is used as the hourly heat supply of the ground source heat pump in the corresponding unit time; The hourly heat supply of the ground source heat pump per unit time is: ， in, The hourly heat supply of the ground source heat pump per unit time is is the dynamic heat load of the building; Obtaining the hourly heating supply of the air source heat pump within a corresponding unit time according to the building heat load and the hourly heating supply of the ground source heat pump; The hourly heating amount of the air source heat pump per unit time is: ， in, The hourly heat supply of the air source heat pump per unit time; When the building heat load is greater than the rated heating supply of the ground source heat pump, the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump are used as the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump in the corresponding unit time.

5. The heat pump system design method based on dynamic load according to claim 1, characterized in that: The heat pump selection strategy and the water pump selection strategy are obtained by using the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump, including: The power consumption of the ground source heat pump, the power consumption of the air source heat pump and the power consumption of the water pump are obtained by the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; Wherein, the power consumption of the ground source heat pump is: ， in, is the power consumption of the ground source heat pump, Supplying heat to the ground source heat pump hourly, is the actual heating power of the buried pipe heat exchanger, is the coefficient of performance of the heat pump; The power consumption of the air source heat pump is: ， in, is the power consumption of the air source heat pump, Supplying heat to the air source heat pump hourly, is the seasonal performance factor of the air source heat pump; Wherein, the power consumption of the water pump is: ， in, is the maximum water flow, P pump is the power consumption of the water pump, g is the acceleration of gravity, H is the head of the water pump, and η is the efficiency of the water pump; The heat pump selection strategy and the water pump selection strategy are obtained according to the power consumption of the ground source heat pump, the power consumption of the water pump and the power consumption of the air source heat pump.

6. The heat pump system design method based on dynamic load according to claim 5, characterized in that: The economic indicators and energy-saving indicators obtained by the dynamic load heat pump system include: Obtaining the initial cost of system equipment and the power consumption of system equipment through the dynamic load heat pump system, wherein the power consumption of system equipment includes the power consumption of ground source heat pump, the power consumption of air source heat pump and the power consumption of water pump; Obtaining the energy-saving index according to the power consumption of the system equipment; The energy-saving index is: ， in, is the energy-saving index, is the power consumption of the ground source heat pump, is the power consumption of the air source heat pump, The power consumption of the water pump; The power consumption of the ground source heat pump is: ， The power consumption of the air source heat pump is: ， The power consumption of the water pump is: ， in, is the power consumption of the ground source heat pump, is the power consumption of the air source heat pump, is the power consumption of the water pump, τ is the time interval, and N is the preset system operation time; The economic indicator is obtained according to the initial cost of the system equipment and the power consumption of the system equipment.

7. The heat pump system design method based on dynamic load according to claim 6, characterized in that: The economic indicator is obtained according to the initial cost of the system equipment and the power consumption of the system equipment, including: Obtaining ground source heat pump costs, air source heat pump costs, and water pump costs based on the initial cost of the system equipment and the power consumption of the system equipment, wherein the initial cost of the system equipment includes the initial cost of the heat pump, the initial cost of the air source heat pump, and the initial cost of the water pump; The ground source heat pump fee is: ， in, For the ground source heat pump cost, is the initial cost of the ground heat exchanger, is the initial cost of the ground source heat pump, is the power consumption of the ground source heat pump, For electricity prices; Among them, the air source heat pump cost is: ， in, For the air source heat pump cost, is the initial cost of the air source heat pump, The power consumption of the air source heat pump; Among them, the water pump fee is: ， in, For the water pump fee, is the initial cost of the water pump, The power consumption of the water pump; Obtaining the economic indicator according to the ground source heat pump cost, the air source heat pump cost, and the water pump cost; The economic indicators are: ， in, is the economic indicator.

8. A heat pump system design device based on dynamic load, characterized in that: include: An acquisition module, configured to acquire a current load distribution rate, wherein the current load distribution rate is used to represent a preset load ratio of the ground source heat pump; a processing module, configured to execute a system design process according to the current load distribution rate, the system design process comprising: obtaining a rated heating supply of a ground source heat pump and a rated heating supply of an air source heat pump according to the current load distribution rate; Obtaining a ground source heat pump layout strategy and an air source heat pump equipment layout strategy based on the ground source heat pump rated heating supply and the air source heat pump rated heating supply; Using the building dynamic heat load to update the rated heating supply of the ground source heat pump and the rated heating supply of the air source heat pump, to obtain the hourly heating supply of the ground source heat pump and the hourly heating supply of the air source heat pump, wherein the building dynamic heat load includes the building heat load per unit time within all preset system operating hours; Obtaining a heat pump selection strategy and a water pump selection strategy based on the hourly heat supply of the ground source heat pump and the hourly heat supply of the air source heat pump; According to the heat pump selection strategy and the water pump selection strategy, the ground source heat pump layout strategy and the air source heat pump equipment layout strategy are updated to obtain a dynamic load heat pump system; Obtaining economic indicators and energy-saving indicators through the dynamic load heat pump system; The processing unit is further configured to update the current load distribution rate according to the economic index and the energy-saving index, return to execute the system design process, repeat the above steps until a preset number of times is reached, and obtain a target dynamic load heat pump system by screening the economic index and the energy-saving index according to preset requirements.

9. An electronic device, characterized in that: including memory and processor; The memory is used to store computer programs; The processor is configured to implement the heat pump system design method based on dynamic load according to 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, and when the computer program is executed by a processor, the heat pump system design method based on dynamic load according to any one of claims 1 to 7 is implemented.

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