Ground source heat pump distributed energy system operation strategy considering low-carbon operation

Abstract

The invention discloses a ground source heat pump distributed energy system considering low-carbon operation, which comprises a ground source heat pump, a PVT device, a phase change energy storage device, an indoor tail end wind disc, a data acquisition system and a remote control system, the ground source heat pump, the PVT device, the phase change energy storage device, the indoor tail end wind disc, the data acquisition system and the remote control system jointly form an energy supply network. And the ground source heat pump is connected with a buried pipe heat exchanger. The energy utilization efficiency is improved, the operation cost is reduced, the energy structure is optimized, carbon emission is reduced, the development trend of the current global low-carbon policy is met, and the implementation of the policy is expected to make an important contribution to low-carbon transformation of the building field and even the whole society.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump system energy supply and renewable energy utilization, and in particular to an operation strategy for a ground source heat pump distributed energy system taking low-carbon operation into consideration. Background Art

[0002] Globally, addressing climate change and achieving sustainable development has become an urgent task. Driven by the low-carbon economy, my country is also committed to reducing greenhouse gas emissions and improving energy efficiency. Ground source heat pumps, solar energy and other renewable energy sources are particularly important as an efficient and environmentally friendly energy solution in this context.

[0003] Ground source heat pump technology has become one of the preferred technologies for building heating and cooling due to its high efficiency, energy saving and environmental friendliness. It uses buried pipe heat exchangers to exchange heat with underground soil and uses geothermal energy to achieve energy conversion and transmission. However, traditional ground source heat pump systems may have problems such as low energy utilization efficiency and high operating costs during operation. As another renewable energy source, solar energy has great development potential. However, its intermittent and instability limit its stability and reliability in energy supply. In order to solve this problem, this patent proposes a distributed energy supply system that integrates ground source heat pumps and solar energy, and achieves efficient energy utilization and low carbon emissions by optimizing the operation strategy. Summary of the invention

[0004] The purpose of the present invention is to provide a ground source heat pump distributed energy system operation strategy taking into account low-carbon operation to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ground source heat pump distributed energy system taking low-carbon operation into account, comprising a ground source heat pump, a PVT device, a phase change energy storage device, an indoor terminal wind disk, a data acquisition system and a remote control system, wherein the ground source heat pump, the PVT device, the phase change energy storage device, the indoor terminal wind disk, the data acquisition system and the remote control system together constitute an energy supply network; the ground source heat pump is connected to a buried pipe heat exchanger;

[0006] The PVT device is connected to the ground source heat pump, the phase change energy storage device and the indoor terminal wind disk, the data acquisition system is connected to the ground source heat pump, the PVT device, the phase change energy storage device and the indoor terminal wind disk, the remote control system is connected to the water pump P1, the water pump P2, the water pump P3, the water pump P4 and the indoor terminal wind disk, and the water pump P1 and the water pump P2 are respectively installed at the two ends of the ground source heat pump, the water pump P3 and the water pump P4 are respectively installed on the PVT device and the phase change energy storage device, the input end of the ground source heat pump is provided with valve V1 and valve V2, the two ends of the PVT device are respectively provided with valve V3 and valve V4, the output end of the ground source heat pump is provided with valve V5 and valve V6, the two ends of the phase change energy storage device are respectively provided with valve V7 and valve V8, and the two ends of the indoor terminal wind disk are respectively provided with valve V9 and valve V10.

[0007] Preferably, the remote control system is used to monitor the power generation of the PVT device, the inlet and outlet water temperatures of each device, the indoor and outdoor temperatures, and the humidity parameters in real time. The system automatically adjusts the operating status of the equipment based on the monitoring data to achieve the optimal energy configuration.

[0008] Preferably, the data acquisition system collects system operation data, including power output, heat exchange efficiency, and battery charge and discharge status, and provides a basis for system optimization through data analysis.

[0009] Preferably, a safety and maintenance system is included, and its main implementation methods are: regular inspection of system equipment to ensure safe and reliable operation; software upgrade of the intelligent control system to improve the intelligence level of the system; regular charging and discharging maintenance of the battery to extend its service life.

[0010] An operation strategy of a ground source heat pump distributed energy system taking low-carbon operation into account includes a nighttime energy storage mode and a daytime operation mode. The daytime operation mode is divided into three stages: a solar energy heating stage, a load peak joint supply stage, and a load stable heat pump heating stage. In the nighttime energy storage mode: turn off the power supply side of the PVT device, only keep the heat side running, start the ground source heat pump, turn on the water pumps P1 and P2, turn off other water pumps, open valves V1, V2, V5, and V6, and turn off other valves. The ground source heat pump absorbs heat from the underground pipe exchanger and transfers the heat to the phase change heat storage device through the water pump P1. The phase change heat storage device stores heat to prepare for daytime heating. Daytime operation mode: Stage 1: Solar energy heating stage: start the PVT device, turn off the ground source heat pump, save electricity, use photovoltaic power generation for power supply, and heat the building on the light and heat side. Through the remote control system, the working state of the PVT device is automatically adjusted according to the indoor and outdoor temperature difference and the solar radiation intensity. The excess power is stored in the battery and can be supplied to the power grid at the same time. Stage 2: Load peak joint supply stage: When the power supply of the PVT device is insufficient, start the ground source heat pump for auxiliary heating, turn on water pumps P2 and P3, close P1, and adjust the valve to make the ground source heat pump and the phase change heat storage device jointly supply energy. The ground source heat pump absorbs heat from the buried pipe exchanger and mixes it with the heat released by the phase change heat storage device to jointly meet the indoor heating needs; Stage 3: Load stable heat pump heating stage: The power supply of the PVT device is stable, and the ground source heat pump operates intermittently according to the indoor and outdoor temperature difference and the energy storage status of the phase change heat storage device.

[0011] Preferably, the power required by the system is provided by a battery, and when the battery power is insufficient, it automatically switches to power supply from the grid.

[0012] Preferably, the remote control system dynamically adjusts the working status of the ground source heat pump and the phase change thermal storage device according to real-time data to ensure efficient operation of the system.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This strategy uses intelligent control algorithms to monitor and analyze the system operating status in real time, and dynamically adjust the operating parameters of the ground source heat pump and solar energy system to achieve the optimal configuration of energy supply; while ensuring the stability of energy supply, the system minimizes dependence on fossil energy and reduces the system's carbon emissions; in addition, this patent also takes into account the application of energy storage technology. Through the reasonable configuration of energy storage equipment, the system's utilization rate of renewable energy is further improved, and the system's flexibility and reliability are enhanced; when there is a surplus of energy, the system can store excess energy; when there is a shortage of energy, the stored energy can be released in time to meet the user's energy needs.

[0015] In summary, the ground source heat pump distributed energy supply system operation optimization strategy proposed in the present invention not only improves energy utilization efficiency and reduces operating costs, but also reduces carbon emissions by optimizing the energy structure. It is in line with the current development trend of global low-carbon policies. The implementation of this strategy is expected to make important contributions to the low-carbon transformation of the construction industry and even the entire society. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] In the figure: 1. Ground source heat pump; 2. PVT device; 3. Buried pipe heat exchanger; 4. Phase change energy storage device; 5. Indoor terminal fan disk; 6. Data acquisition system; 7. Remote control system. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 The present invention provides a technical solution: a ground source heat pump distributed energy system taking low-carbon operation into account, comprising a ground source heat pump 1, a PVT device 2, a phase change energy storage device 4, an indoor terminal wind disk 5, a data acquisition system 6 and a remote control system 7, the ground source heat pump 1, the PVT device 2, the phase change energy storage device 4, the indoor terminal wind disk 5, the data acquisition system 6 and the remote control system 7 together constitute an energy supply network; the ground source heat pump 1 is connected to a buried pipe heat exchanger 3;

[0020] The PVT device 2 is connected to the ground source heat pump 1, the phase change energy storage device 4 and the indoor terminal wind disk 5, the data acquisition system 6 is connected to the ground source heat pump 1, the PVT device 2, the phase change energy storage device 4 and the indoor terminal wind disk 5, the remote control system 7 is connected to the water pump P1, the water pump P2, the water pump P3, the water pump P4 and the indoor terminal wind disk 5, and the water pump P1 and the water pump P2 are respectively installed at the two ends of the ground source heat pump 1, the water pump P3 and the water pump P4 are respectively installed on the PVT device 2 and the phase change energy storage device 4, the input end of the ground source heat pump 1 is provided with a valve V1 and a valve V2, the two ends of the PVT device 2 are respectively provided with a valve V3 and a valve V4, the output end of the ground source heat pump 1 is provided with a valve V5 and a valve V6, the two ends of the phase change energy storage device 4 are respectively provided with a valve V7 and a valve V8, and the two ends of the indoor terminal wind disk 5 are respectively provided with a valve V9 and a valve V10.

[0021] In the present invention, the remote control system 7 is used to monitor the power generation of the PVT device 2, the inlet and outlet water temperatures of each device, the indoor and outdoor temperatures, and the humidity parameters in real time. The system automatically adjusts the equipment operating status according to the monitoring data to achieve the optimal energy configuration.

[0022] In the present invention, the data acquisition system 6 collects system operation data, including power output, heat exchange efficiency, and battery charge and discharge status, and provides a basis for system optimization through data analysis.

[0023] The present invention includes a safety and maintenance system, and its main implementation methods are: regularly checking system equipment to ensure safe and reliable operation; performing software upgrades on the intelligent control system to improve the intelligence level of the system; and performing regular charging and discharging maintenance on the battery to extend its service life.

[0024] An operation strategy of a ground source heat pump distributed energy system taking into account low-carbon operation includes a nighttime energy storage mode and a daytime operation mode. The daytime operation mode is divided into three stages: a solar heating stage, a load peak joint supply stage, and a load stable heat pump heating stage. In the nighttime energy storage mode: the power supply side of the PVT device 2 is turned off, only the heat side is kept running, the ground source heat pump 1 is started, the water pumps P1 and P2 are turned on, the other water pumps are turned off, the valves V1, V2, V5, and V6 are opened, and the other valves are closed. The ground source heat pump 1 is connected to the ground pipe exchanger 3. Absorb heat, transfer the heat to the phase change heat storage device 4 through the water pump P1, the phase change heat storage device 4 stores heat to prepare for daytime heating; Daytime operation mode: Phase 1: Solar energy heating alone: ​​Start the PVT device 2, turn off the ground source heat pump 1, save electricity, photovoltaic power generation is used for power supply, and the light and heat side is used for building heating. Through the remote control system 7, according to the indoor and outdoor temperature difference and the solar radiation intensity, the working state of the PVT device 2 is automatically adjusted, and the excess power is stored in the battery, and power can be supplied to the power grid at the same time; Phase 2: Load peak joint supply stage: When the power supply of PVT device 2 is insufficient, start the ground source heat pump 1 to assist in heating, turn on water pumps P2 and P3, close P1, and adjust the valve to make the ground source heat pump 1 and the phase change heat storage device 4 jointly supply energy. The ground source heat pump 1 absorbs heat from the buried pipe exchanger 3 and mixes it with the heat released by the phase change heat storage device 4 to jointly meet the indoor heating needs; Stage 3: Load stable heat pump heating stage: The power supply of PVT device 2 is stable, and the ground source heat pump 1 operates intermittently according to the indoor and outdoor temperature difference and the energy storage state of the phase change heat storage device 4.

[0025] In the present invention, the power required by the system is provided by a storage battery, and when the battery power is insufficient, it automatically switches to the power grid for power supply.

[0026] In the present invention, the remote control system 7 dynamically adjusts the working states of the ground source heat pump 1 and the phase change heat storage device 4 according to real-time data to ensure efficient operation of the system.

[0027] Compared with traditional heating systems, this system has significant advantages in carbon reduction and other aspects. The operation strategy of this patent optimizes energy use by intelligently monitoring changes in indoor heat load and automatically adjusting the operation mode of the ground source heat pump system. It uses phase change heat storage devices to store energy during the low electricity price period at night and release energy during the peak electricity price period during the day, which can effectively cope with peak loads. This strategy not only reduces energy costs, but also ensures that the ground source heat pump can maintain a stable load rate operation in different time periods, thereby improving the energy efficiency and economy of the system. Through this intelligent scheduling operation strategy, the system can flexibly respond to fluctuations in energy demand while ensuring the comfort of the indoor environment and the reliability of energy supply.

[0028] The design goal of the system operation strategy of the present invention is to provide users with an efficient, economical and environmentally friendly energy solution, while making positive contributions to the low-carbon development of society and the optimization of energy structure. In order to achieve comprehensive benefits in many aspects, the operation optimization strategy of the ground source heat pump distributed energy supply system proposed in this patent comprehensively considers key factors such as low carbon emissions, economy, energy efficiency, reliability, stability and sustainable development. Through intelligent control algorithms, the operating parameters of the ground source heat pump and solar energy system are dynamically adjusted to adapt to changes in energy demand. In this form, in terms of carbon reduction, for general buildings, this system provides clean energy for its own heating and power supply needs through photovoltaic power generation. The excess electricity generated by the system can be sold online, further reducing the carbon emissions of terminal energy consumption in buildings, responding to global low-carbon policies, reducing dependence on fossil fuels, reducing greenhouse gas emissions, and promoting the green transformation of energy consumption. This strategy also focuses on reducing the operating cost of the system to ensure the economy and sustainability of energy supply. In addition, by optimizing the operation strategy, the system can maintain efficient and stable energy output under different environmental conditions, enhancing the reliability of energy supply.

[0029] To sum up, this patent involves an operation strategy for a ground source heat pump distributed energy supply system that takes into account the comprehensive performance of the system. It not only achieves innovative breakthroughs in technology, but also shows great potential in economic and environmental benefits, providing a practical solution for promoting the optimization of energy structure and the sustainable development of the building environment.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the present invention have been shown and described, it is understood by ordinary technicians in the field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ground source heat pump distributed energy system taking low carbon operation into account, characterized by: The invention comprises a ground source heat pump (1), a PVT device (2), a phase change energy storage device (4), an indoor terminal fan disk (5), a data acquisition system (6) and a remote control system (7), wherein the ground source heat pump (1), the PVT device (2), the phase change energy storage device (4), the indoor terminal fan disk (5), the data acquisition system (6) and the remote control system (7) together form an energy supply network; the ground source heat pump (1) is connected to a buried pipe heat exchanger (3); The PVT device (2) is connected to the ground source heat pump (1), the phase change energy storage device (4) and the indoor terminal wind disk (5); the data acquisition system (6) is connected to the ground source heat pump (1), the PVT device (2), the phase change energy storage device (4) and the indoor terminal wind disk (5); the remote control system (7) is connected to a water pump P1, a water pump P2, a water pump P3, a water pump P4 and the indoor terminal wind disk (5); and the water pump P1 and the water pump P2 are respectively installed at two ends of the ground source heat pump (1). The water pump P3 and the water pump P4 are installed on the PVT device (2) and the phase change energy storage device (4) respectively; the input end of the ground source heat pump (1) is provided with a valve V1 and a valve V2; the two ends of the PVT device (2) are provided with a valve V3 and a valve V4 respectively; the output end of the ground source heat pump (1) is provided with a valve V5 and a valve V6; the two ends of the phase change energy storage device (4) are provided with a valve V7 and a valve V8 respectively; and the two ends of the indoor terminal fan disk (5) are provided with a valve V9 and a valve V10 respectively.

2. According to claim 1, a ground source heat pump distributed energy system taking into account low-carbon operation is characterized in that: The remote control system (7) is used to monitor the power generation of the PVT device (2), the inlet and outlet water temperatures of each device, the indoor and outdoor temperatures, and the humidity parameters in real time. The system automatically adjusts the operating status of the device based on the monitoring data to achieve optimal energy configuration.

3. According to claim 1, a ground source heat pump distributed energy system taking into account low-carbon operation is characterized in that: The data acquisition system (6) collects system operation data, including power output, heat exchange efficiency, and battery charge and discharge status, and provides a basis for system optimization through data analysis.

4. A ground source heat pump distributed energy system taking low carbon operation into account according to claim 1, characterized in that: Including safety and maintenance systems, the main implementation methods are: regular inspection of system equipment to ensure safe and reliable operation; software upgrades for intelligent control systems to improve the intelligence level of the system; regular charging and discharging maintenance of batteries to extend service life.

5. According to claim 1, a ground source heat pump distributed energy system operation strategy taking into account low-carbon operation is characterized by: It includes nighttime energy storage mode and daytime operation mode. The daytime operation mode is divided into three stages: solar heating stage, peak load cogeneration stage, and stable load heat pump heating stage. During the nighttime energy storage mode: turn off the power supply side of the PVT device (2), only keep the heat side running, start the ground source heat pump (1), turn on the water pumps P1 and P2, turn off other water pumps, open valves V1, V2, V5, and V6, and turn off other valves. The ground source heat pump (1) absorbs heat from the underground pipe exchanger (3), and transfers the heat to the phase change heat storage device (4) through the water pump P1. The phase change heat storage device (4) stores heat to prepare for daytime heating. Daytime operation mode: Stage 1: Solar energy heating stage: start the PVT device (2), turn off the ground source heat pump (1), save electricity, use photovoltaic power generation for power supply, and heat the building with the solar thermal side. Through the remote control system (7), the working state of the PVT device (2) is automatically adjusted according to the indoor and outdoor temperature difference and the solar radiation intensity. The excess power is stored in the battery, and power can be supplied to the grid at the same time. Stage 2: Load peak cogeneration stage: When the PVT device (2) is short of power, the ground source heat pump (1) is started to assist heating, water pumps P2 and P3 are turned on, P1 is turned off, and the valve is adjusted so that the ground source heat pump (1) and the phase change heat storage device (4) jointly supply energy. The ground source heat pump (1) absorbs heat from the underground pipe exchanger (3) and mixes it with the heat released by the phase change heat storage device (4) to jointly meet the indoor heating demand; Stage 3: Load-stable heat pump heating stage: The PVT device (2) provides stable power supply, and the ground source heat pump (1) operates intermittently according to the indoor and outdoor temperature difference and the energy storage state of the phase change thermal storage device (4).

6. According to claim 5, a ground source heat pump distributed energy system operation strategy taking into account low-carbon operation is characterized by: The power required by the system is provided by batteries. When the battery power is insufficient, it automatically switches to the grid for power supply.

7. The operation strategy of a ground source heat pump distributed energy system taking into account low-carbon operation according to claim 5 is characterized by: The remote control system (7) dynamically adjusts the working states of the ground source heat pump (1) and the phase change heat storage device (4) according to real-time data, thereby ensuring efficient operation of the system.

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