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

Abstract

The application discloses a kind of ground source heat pump distributed energy systems considering low carbon operation, including ground source heat pump, PVT device, phase change energy storage device, indoor terminal air disc, data acquisition system and remote control system, the ground source heat pump, PVT device, phase change energy storage device, indoor terminal air disc, data acquisition system and remote control system are commonly made of an energy supply network;The ground source heat pump is connected with buried pipe heat exchanger.The application not only improves energy utilization efficiency, reduces operating cost, but also reduces carbon emissions by optimizing energy structure, in line with the current global low carbon policy development trend, the implementation of the strategy is expected to make an important contribution for the low carbon transformation of building field even the whole society.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump system energy supply and renewable energy utilization, in particular to a ground source heat pump distributed energy system operation strategy considering low-carbon operation. BACKGROUND

[0002] Globally, addressing climate change and achieving sustainable development has become an urgent task. With the promotion of low-carbon economy, China is committed to reducing greenhouse gas emissions and improving energy efficiency. Renewable energy such as ground source heat pump and solar energy is 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 energy efficiency and environmental friendliness. It exchanges heat with underground soil through a buried pipe heat exchanger and utilizes geothermal energy to achieve energy conversion and transmission. However, traditional ground source heat pump systems may have low energy utilization efficiency and high operating costs during operation. Solar energy, as another renewable energy source, has great development potential. However, its intermittency and instability limit its stability and reliability in energy supply. To solve this problem, this patent proposes a distributed energy supply system integrating ground source heat pump and solar energy, and through optimization of operation strategy, it realizes efficient use of energy and low carbon emission. SUMMARY

[0004] The purpose of the present application is to provide a ground source heat pump distributed energy system operation strategy considering low-carbon operation to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a ground source heat pump distributed energy system considering low-carbon operation, comprising a ground source heat pump, a PVT device, a phase change energy storage device, an indoor terminal air 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 terminal air disc, the data acquisition system and the remote control system together constitute an energy supply network; the ground source heat pump is connected with a buried pipe heat exchanger;

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

[0007] Preferably, the remote control system is used for monitoring the power generation of the PVT device, the inlet and outlet water temperature of each device, the indoor and outdoor temperature and humidity parameters in real time, and automatically adjusting the running state of the device according to the monitoring data to realize optimal energy allocation.

[0008] Preferably, the data acquisition system acquires system running data, including power output, heat exchange efficiency, battery charging and discharging state, and provides basis for system optimization through data analysis.

[0009] Preferably, the system comprises a safety and maintenance system, and the main implementation approach is: regularly checking system equipment to ensure safe and reliable operation; upgrading software of the intelligent control system to improve the intelligent level of the system; regularly charging and discharging the battery to prolong the service life.

[0010] A ground source heat pump distributed energy system operation strategy considering low carbon operation, including night energy storage mode and daytime operation mode, the daytime operation mode is divided into three stages: solar heating stage, load peak combined supply stage, and load stable heat pump heating stage; wherein the night energy storage mode: close the PVT device power supply side, only keep the heat side running, start the ground source heat pump, open the water pumps P1 and P2, close other water pumps, open the valves V1, V2, V5 and V6, close other valves, the ground source heat pump absorbs heat from the buried pipe exchanger, and the heat is transmitted to the phase change heat storage device through the water pump P1, the phase change heat storage device stores heat, and prepares for daytime heating; the daytime operation mode: stage 1: solar heating stage: start the PVT device, close the ground source heat pump, save electric energy, photovoltaic power generation is used for power supply, the photothermal side is used for heating buildings, 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, and the excess power is stored in the storage battery, and meanwhile, power can be supplied to the power grid; stage 2: load peak combined supply stage: when the PVT device power supply is insufficient, the ground source heat pump is started to assist heating, the water pumps P2 and P3 are opened, P1 is closed, the valves are adjusted, the ground source heat pump and the phase change heat storage device are combined to supply energy, the ground source heat pump absorbs heat from the buried pipe exchanger, and the heat is mixed with the heat released by the phase change heat storage device to jointly meet the indoor heating demand; stage 3: load stable heat pump heating stage: the PVT device power supply is stable, and the ground source heat pump is intermittently operated according to the indoor and outdoor temperature difference and the phase change heat storage device energy storage state.

[0011] Preferably, the required power of the system is provided by the storage battery, and when the storage battery power is insufficient, the power supply is automatically switched to the power grid.

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

[0013] Compared with the prior art, the beneficial effects of the present application are:

[0014] The strategy realizes the optimal configuration of energy supply through intelligent control algorithm, real-time monitoring and analysis of system operation state, and dynamic adjustment of the operation parameters of the ground source heat pump and the solar system; while ensuring stable energy supply, the system maximally reduces the dependence on fossil energy and reduces carbon emissions of the system; in addition, the application of energy storage technology is considered in the present patent, and the utilization rate of renewable energy of the system is further improved through reasonable configuration of the energy storage equipment, and the flexibility and reliability of the system are enhanced; when there is excess energy, the system can store the excess energy; when there is energy shortage, the stored energy can be released in time to meet the energy demand of users.

[0015] In summary, the operation optimization strategy of the ground source heat pump distributed energy supply system provided by the present application not only improves the energy utilization efficiency and reduces the operation cost, but also reduces the carbon emission by optimizing the energy structure, which meets the development trend of the current global low-carbon policy, and the implementation of the strategy is expected to make an important contribution to the low-carbon transformation of the building field and even the whole society. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present application.

[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 air disc; 6, data acquisition system; 7, remote control system. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figure 1 The present application provides a technical solution: a ground source heat pump distributed energy system considering low-carbon operation, which comprises a ground source heat pump 1, a PVT device 2, a phase change energy storage device 4, an indoor terminal air disc 5, a data acquisition system 6 and a remote control system 7, and the ground source heat pump 1, the PVT device 2, the phase change energy storage device 4, the indoor terminal air disc 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 with a buried pipe heat exchanger 3;

[0020] The PVT device 2 is connected with the ground source heat pump 1, the phase change energy storage device 4 and the indoor terminal air disc 5, the data acquisition system 6 is connected with the ground source heat pump 1, the PVT device 2, the phase change energy storage device 4 and the indoor terminal air disc 5, the remote control system 7 is connected with a water pump P1, a water pump P2, a water pump P3, a water pump P4 and the indoor terminal air disc 5, 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 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 air disc 5 are respectively provided with a valve V9 and a valve V10.

[0021] In the application, the remote control system 7 is used for monitoring the power generation of the PVT device 2, the inlet and outlet water temperature of each device, the indoor and outdoor temperature, and the humidity parameter in real time, and the system automatically adjusts the running state of the device according to the monitoring data, so as to realize the optimal energy configuration.

[0022] In the application, the data acquisition system 6 acquires system running data, including power output, heat exchange efficiency, and battery charging and discharging state, and provides a basis for system optimization through data analysis.

[0023] In the application, the safety and maintenance system is included, and the main implementation ways are as follows: regularly checking the system equipment to ensure safe and reliable operation; upgrading the software of the intelligent control system to improve the intelligent level of the system; and regularly charging and discharging the battery to prolong the service life.

[0024] A ground source heat pump distributed energy system operation strategy considering low-carbon operation includes a night energy storage mode and a daytime operation mode, and the daytime operation mode is divided into three stages: a solar heating stage, a load peak combined supply stage, and a load stable heat pump heating stage; wherein in the night energy storage mode: the power supply side of the PVT device 2 is closed, only the heat side is kept running, the ground source heat pump 1 is started, the water pumps P1 and P2 are opened, other water pumps are closed, the valves V1, V2, V5 and V6 are opened, and other valves are closed, the ground source heat pump 1 absorbs heat from the ground buried pipe exchanger 3, the heat is transferred to the phase change heat storage device 4 through the water pump P1, and the phase change heat storage device 4 stores heat to prepare for daytime heating; in the daytime operation mode: stage 1: a solar heating stage: the PVT device 2 is started, the ground source heat pump 1 is closed, the electric energy is saved, the photovoltaic power generation is used for power supply, the light and heat side supplies heat for the building, the working state of the PVT device 2 is automatically adjusted according to the indoor and outdoor temperature difference and the solar radiation intensity through the remote control system 7, the excess electric energy is stored in the battery, and the electric energy can be supplied to the power grid at the same time; stage 2: a load peak combined supply stage: when the PVT device 2 is insufficient for power supply, the ground source heat pump 1 is started to assist heating, the water pump P2 and P3 are opened, P1 is closed, the valve is adjusted, the ground source heat pump 1 and the phase change heat storage device 4 are combined to supply energy, the ground source heat pump 1 absorbs heat from the ground buried pipe exchanger 3, and the heat is mixed with the heat released by the phase change heat storage device 4 to jointly meet the indoor heating demand; stage 3: a load stable heat pump heating stage: the PVT device 2 supplies stable power, and the ground source heat pump 1 intermittently runs according to the indoor and outdoor temperature difference and the phase change heat storage device 4 energy storage state.

[0025] In the application, the electric energy required by the system is provided by the battery, and when the electric quantity of the battery is insufficient, the system is automatically switched to the power grid for power supply.

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

[0027] Compared with traditional heating systems, the system has significant advantages in carbon reduction and other aspects. The operation strategy of the patent automatically adjusts the operation mode of the ground source heat pump system by intelligently monitoring the changes of indoor heat load, realizes the optimization of energy use, stores energy at night during the low electricity price period, and releases energy during the day during the peak electricity price period, which can effectively cope with peak load. This strategy not only reduces energy costs, but also ensures that the ground source heat pump can maintain stable load rate operation at 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 application aims to provide an efficient, economical and environmentally friendly energy solution for users, while making a positive contribution to the optimization of low-carbon development and energy structure for society. In order to achieve comprehensive benefits in many aspects, the ground source heat pump distributed energy supply system operation optimization strategy proposed in the patent comprehensively considers key factors such as low carbon emission, economy, energy efficiency, reliability, stability and sustainable development, and dynamically adjusts the operation parameters of the ground source heat pump and solar system through intelligent control algorithm to adapt to changes in energy demand. In this form, in terms of carbon reduction, for general buildings, the system provides clean energy for its own heating and power supply needs through photovoltaic power generation. The excess power generated by the system can be sold on the grid, further reducing carbon emissions from building terminal energy consumption, responding to global low-carbon policies, reducing dependence on fossil fuels, reducing greenhouse gas emissions, and promoting 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, through the optimization of the operation strategy, the system can maintain efficient and stable energy output under different environmental conditions, enhancing the reliability of energy supply.

[0029] In summary, the ground source heat pump distributed energy supply system operation strategy considering the comprehensive performance of the system involved in the present application not only realizes innovation breakthroughs in the technical field, but also shows great potential in economic and environmental benefits, providing a practical solution for promoting the optimization of energy structure and sustainable development of building environment.

[0030] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, although embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended 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 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 both ends of the ground source heat pump (1). Water pumps P3 and 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 valves V1 and V2. The two ends of the PVT device (2) are provided with valves V3 and V4 respectively. The output end of the ground source heat pump (1) is provided with valves V5 and V6. The two ends of the phase change energy storage device (4) are provided with valves V7 and V8 respectively. The two ends of the indoor terminal fan disk (5) are provided with valves V9 and V10 respectively.

2. A ground source heat pump distributed energy system taking low-carbon operation into account according to claim 1, 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. The ground source heat pump distributed energy system according to claim 1, 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. The ground source heat pump distributed energy system with low carbon operation as claimed in claim 1, characterized in that: It includes a safety and maintenance system, and its main implementation methods are: regular inspection of system equipment to ensure safe and reliable operation; software upgrades to the intelligent control system to improve the system's intelligence level; and regular charging and discharging maintenance of the battery to extend its service life.

5. The low-carbon operation-based ground-source heat pump distributed energy system operation strategy according to claim 1 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, load peak cogeneration stage, and load stable heat pump heating stage. During 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, water pumps P1 and P2 are turned on, other water pumps are turned off, valves V1, V2, V5, and V6 are opened, and other valves are closed. 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 and prepares for daytime heating. During the daytime operation mode: Phase 1: Solar energy heating alone phase: 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 electricity is stored in the battery and can be supplied to the grid at the same time. Phase 2: Load peak joint supply stage: When the power supply of the PVT device (2) is insufficient, the ground source heat pump (1) is started to assist in heating, the 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 buried pipe exchanger (3) and mixes it with the heat released by the phase change heat storage device (4) to meet the indoor heating demand; Phase 3: Load-stable heat pump heating phase: The PVT device (2) provides stable power supply, and the ground source heat pump (1) operates intermittently based on the indoor and outdoor temperature difference and the energy storage status of the phase change thermal storage device (4).

6. The low-carbon operation-oriented ground-source heat pump distributed energy system operation strategy according to claim 5, characterized in that: The power required by the system is provided by batteries. When the battery power is insufficient, it automatically switches to grid power supply.

7. The low-carbon operation-oriented ground-source heat pump distributed energy system operation strategy according to claim 5, characterized in that: 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) based on real-time data to ensure efficient operation of the system.

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