144 results about "Geothermal heat pump" patented technology

The invention provides a ground source heat pump buried pipe system design method based on building load change, comprising the following steps: S1, acquiring geological survey data, meteorological data and building load data, and presetting buried pipe heat exchange system parameters; s2, establishing a multi-physics field coupling numerical model; s3, transient simulation is carried out through a multi-physics field coupling numerical model, and system short-term thermal response characteristic data corresponding to each candidate length are acquired and stored; s4, constructing and training a long-term dynamic performance prediction model through the long and short-term memory network model; and S5, based on a multi-objective optimization algorithm, solving a multi-objective optimization problem, obtaining a group of Pareto optimal buried pipe total length solution sets, and selecting a final buried pipe optimal total length from the optimal solution sets. According to the method, the design precision of the ground source heat pump buried pipe can be remarkably improved, the long-term dynamic prediction capacity is achieved, the reliability, economical efficiency and environment friendliness of long-term operation of a ground source heat pump system can be guaranteed, and the design efficiency and reliability are improved.

The invention relates to a heat pipe energy pile, a heat pipe ground source heat pump system and an operation management method of the heat pipe ground source heat pump system, and solves the technical problems that an existing ground source heat pump needs extra power, is high in energy consumption and is difficult to adapt to winter and summer two-way energy supply, and the system comprises a pile foundation, a heat pipe, a heat exchanger and a heat pump unit. The heat pipe is combined with the pile foundation, is a vacuumized closed pipe body which is provided with a capillary core and filled with a phase change working medium, and is divided into an evaporation section at the lower part / side part of the pile foundation and a condensation section at the upper part of the pile foundation; the evaporation section exchanges heat with soil, the condensation section is connected with a heat exchanger, and the heat pump ground source side is connected with the heat exchanger; the capillary core drives a working medium to flow back autonomously through capillary force, and heat transfer or release is achieved. The system has the following effects that the contradiction between low consumption and annual energy supply in the prior art is solved, no extra power is achieved, two-way efficient energy supply in winter and summer is achieved, and energy consumption of a building cold and heat source system is greatly reduced.

The invention discloses a rock-soil temperature field rapid solving method suitable for a ground source heat pump system, and the method comprises the steps: firstly building a three-dimensional unsteady-state heat transfer model in consideration of a buried pipe coaxial structure, a porous arrangement form and the characteristics of a multilayer heterogeneous soil body in the ground source heat pump system; then simulating a thermal response process by using the model, constructing a multi-domain coupled thermal conduction augmentation matrix, performing POD on the matrix, extracting a dominant mode function of a temperature field, and constructing a low-dimensional POD-based mode space; and finally, constructing a POD-Galerkin low-order model, simulating a buried pipe group soil temperature field, performing inversion of a heat source function, and outputting stratum thermophysical parameters. According to the method, the calculation efficiency and the simulation precision of the porous coupling and long-period unsteady state heat transfer process are remarkably improved, the problem that traditional finite element and finite difference methods are high in time consumption in porous strong coupling modeling is solved, and rapid prediction of the soil temperature and robust recognition of the heat source function under a complex stratum and a heat exchange structure can be achieved.

The invention discloses an optimal scheduling method for a ground source heat pump system, and relates to the technical field of new energy utilization and intelligent control of a heat supply system.The method comprises the steps that the ground source heat pump system is divided into a tail end heat exchange layer, a water pump transmission and distribution layer and a source side heat pump coupling layer on the basis of a heat energy conversion and transmission path; constructing a response coupling relation and a mapping model; operating data of three layers of equipment are collected, a time sequence of each layer is established, a dynamic delay structure matching coefficient is calculated, and a multi-layer linkage response lag risk is identified based on a first threshold value; further monitoring a second derivative of the source side temperature change, calculating a thermal inertia interference index, and judging that the thermal response of the source side is abnormal in combination with a second threshold value; and the water supply flow of each branch is extracted, the target water supply value and the total flow of the system are combined, a flow deviation factor is calculated, flow distribution deviation is recognized according to a third threshold value, accurate strategy generation and intelligent scheduling control based on multi-parameter dynamic characteristics are achieved, and the response coordination and operation stability of the system are improved.

The invention discloses an energy shaft heat exchange efficiency optimization method based on stratum thermophysical property intelligent analysis, and the method comprises the steps: constructing a structured thermophysical property parameter database through integrating laboratory testing, on-site exploration and literature data, and covering key parameters such as a heat conductivity coefficient, specific heat capacity, a thermal diffusion coefficient and the like; a heat transfer model is verified and expanded by combining a reduced scale physical experiment and multi-parameter coupling numerical simulation; machine learning algorithms such as a random forest and a neural network are utilized to establish a nonlinear prediction model of the thermophysical parameters and the heat exchange efficiency of the energy shaft, the contribution degree of the parameters is quantified, and an adaptability threshold value is defined. Through similarity matching of drilling exploration data and a database, the optimal stratum depth is recommended, and finally a cloud intelligent platform is integrated, so that real-time data updating, online calculation and construction suggestions are realized. According to the method, the precision of stratum suitability evaluation in energy shaft ground source heat pump system development is remarkably improved, and the geothermal energy development efficiency is remarkably improved.

The invention relates to a solar cross-seasonal heat storage and release ground source heat pump system and a balance control method and device, and relates to the technical field of ground source heat pump systems. The ground source heat pump subsystem comprises a ground heat exchanger group which is arranged in a partitioned manner; and the cross-seasonal heat storage device is used for storing and releasing solar heat and is thermally coupled with the buried pipe heat exchanger group, the cross-seasonal heat storage device is of an underground concrete structure, and three temperature gradient areas of a high-temperature layer, a medium-temperature layer and a low-temperature layer are arranged in the cross-seasonal heat storage device. Through the synergistic effect of the dynamic load distribution mechanism and the layered heat storage strategy, the problem of soil cold and heat accumulation caused by long-term operation of the ground source heat pump system can be effectively relieved. Differential design of the core heat exchange area and the buffer temperature adjustment area is combined with a multi-objective optimization algorithm, so that the difference value of annual accumulated heat taking capacity and heat supplementing capacity is controlled within 5%, and the self-recovery capacity of the soil thermal field is remarkably improved.

The invention relates to the technical field of ground source heat pump operation control, in particular to an optimal adjustment method of a ground source heat pump system, which comprises the following steps: S1, collecting underground soil temperature and system heat load of the ground source heat pump system; s2, calculating a soil heat balance index based on the underground soil temperature; s3, according to the soil heat balance index and the system heat load, the optimized operation mode of the ground source heat pump system is judged; and S4, according to the optimized operation mode judged in the S3, the operation parameters of the ground source heat pump system are adjusted, and a corresponding execution mechanism is driven. According to the method, the operation mode is judged by introducing the soil heat balance index and combining the system heat load, meanwhile, the flow of the circulating water pump, the frequency of the compressor and the opening degree of the heat exchange valve are subjected to interval adjustment, and unification of energy efficiency optimization and long-term balance of the soil heat environment is achieved.

The invention relates to the technical field of ground source heat pump control, in particular to an intelligent cooperative control system for a ground source heat pump system and building energy management. The method comprises the steps that a data collecting and preprocessing unit collects multiple types of data in real time and preprocesses the data to form system state vectors; the load and power generation prediction unit predicts future cooling and heating load and photovoltaic power generation power of the building through a machine learning regression model and a time sequence prediction model; the operation optimization unit generates an optimal operation strategy of the ground source heat pump based on a depth deterministic strategy gradient algorithm; and the multi-source energy coordinated control unit realizes multi-device coordinated control through multi-target mixed integer linear programming. Through combination of prediction data and an optimization algorithm, a dynamic matching relation between load fluctuation and energy supply is fully considered, and the problems of soil heat imbalance and unstable comprehensive energy efficiency ratio of the ground source heat pump system in a traditional fixed parameter operation mode are solved.

The invention discloses an evaluation method of a solar coupling medium-deep ground source heat pump hot water supply system, which relates to the technical field of heat supply systems and comprises the following steps: acquiring various performance indexes based on historical environment parameters, historical system operation parameters and historical energy consumption parameters; the comprehensive energy efficiency ratio, the heat utilization efficiency and the comprehensive performance score of the system are obtained through the multiple performance parameters; and taking the historical environment parameters, the historical system operation parameters and the historical energy consumption parameters as inputs, taking the corresponding system comprehensive energy efficiency ratio, the heat utilization efficiency and the system comprehensive performance score as outputs, and training the neural network model to obtain an evaluation model. According to the method, comprehensive performance evaluation under cooperative work is emphasized, the concept of the comprehensive energy efficiency ratio of the system is put forward, the relation between effective heat output of the system and various input energy consumption of solar energy, the ground source heat pump, auxiliary energy and the like is comprehensively considered, the system performance is comprehensively evaluated, and compared with a single ground source heat pump system, the performance evaluation index is more comprehensive.

The invention provides a solar energy-ground source heat pump coupled intelligent phase change energy storage heat supply method and system which comprises a solar heat collection unit, a ground source heat pump unit, a phase change energy storage unit, a user side heat exchange unit and an AI intelligent control unit. Wherein the solar heat collection unit and the ground source heat pump unit are connected into the input end of the phase change energy storage unit in parallel through a closed-loop pipeline, and the output end of the solar heat collection unit and the output end of the phase change energy storage unit are both connected with the user side heat exchange unit. The AI intelligent control unit is electrically connected with the solar heat collection unit, the ground source heat pump unit, the phase change energy storage unit and the user side heat exchange unit. According to the system, on the premise that the heat supply quality is guaranteed, solar energy which is clean energy is utilized to the maximum extent, dependence on the ground source heat pump and traditional electric power is reduced, operation cost and carbon emission are reduced, and remarkable energy-saving benefits, economical efficiency and environment-friendly value are achieved.

The invention relates to the technical field of ground source heat pumps, and discloses a safety monitoring method and device of a ground source heat pump system, multi-dimensional real-time data such as the rotating speed of a circulating pump, the pipeline pressure and the environment temperature are collected through a multi-point sensor, and dynamic monitoring of the running state is achieved through noise filtering and time sequence analysis. When abnormity is detected, a comprehensive operation matrix is constructed in combination with historical operation records, and stress distribution of the underground pipeline is reversely calculated through the structured grid division technology. Based on a stress distribution sequence, a future stress evolution trend is analyzed and predicted by adopting linear regression, and a potential safety risk level is determined. And finally, dynamically adjusting the data acquisition frequency according to the risk level, and generating a self-adaptive safety monitoring strategy. Intelligent safety monitoring of the ground source heat pump system is achieved, potential risks can be found in time, prevention measures can be taken, and the operation safety and reliability of the system are effectively improved.

The invention belongs to the technical field of heat pump units, and particularly relates to a high-efficiency middle-deep layer geothermal heat pump unit which comprises a unit body and a heat exchange pipe fixedly communicated to the unit body, and a water temperature sensor is further arranged at the position, corresponding to a water return opening, of the heat exchange pipe. The system further comprises a water softening mechanism, a bactericide supplementing mechanism, a water pressure real-time monitoring feedback mechanism, a water pressure descending speed monitoring feedback mechanism, an alarm grade dividing mechanism, an automatic water supplementing and pressure stabilizing mechanism and a working frequency self-regulating mechanism. Heat exchange water can be automatically softened, the content of ions such as calcium and magnesium is reduced, scaling is prevented, the heat exchange efficiency is maintained, the service life of equipment is prolonged, and cost is reduced; the regeneration frequency of the water softening mechanism and the bactericide adding frequency can be automatically regulated and controlled according to the water temperature, and the softening and sterilizing effects are guaranteed; and leakage of the heat exchange tube can be effectively monitored, graded warning is performed according to the size of leakage points, workers can respond and process in time conveniently, and the fault risk is reduced.

The invention discloses an optimization method of a ground source heat pump, electronic equipment and a program product, and the method comprises the steps: collecting the operation data and environment data of a ground source heat pump system in real time through an edge computing gateway deployed on site; constructing a multi-objective optimization model of the ground source heat pump system on the cloud server; solving the optimization model by adopting a self-adaptive multi-target genetic algorithm, and outputting a Pareto optimal solution set; selecting a final execution scheme from the Pareto optimal solution set according to a preset decision preference weight, generating a control instruction, and issuing the control instruction to the field executor through the edge computing gateway; the soil temperature field evolution is predicted through the buried pipe heat transfer model, and a prediction result is fed back to the optimization model and used for correcting the soil heat balance objective function, and long-term dynamic optimization is achieved. According to the method, collaborative optimization of economy, environmental protection and sustainability can be realized by constructing the multi-objective optimization model fusing the operation cost, the soil heat balance and the carbon emission.

The invention discloses a solar energy and ground source heat pump coupling heat supply method and system based on machine learning, and relates to the technical field of heat supply energy management, and the method comprises the steps: taking the minimum system energy consumption as the target, and using a double-delay depth deterministic strategy gradient neural network model to optimize the output distribution of the solar energy and the ground source heat pump. The model adapts to dynamic working conditions, solar energy is utilized preferentially, and the high-energy-consumption operation time of the ground source heat pump is shortened. Multi-dimensional data are collected through the Internet of Things and an environment monitoring system to construct a state space, a heat supply temperature deviation and equipment operation efficiency reward function is introduced, it is guaranteed that the heat supply temperature is stable, efficient operation of the ground source heat pump is guaranteed, and complex working conditions are dealt with. And full-process automation is realized by relying on a machine learning model, a load distribution sequence is generated through an optimal heat supply load distribution model, and dynamic adjustment is automatically completed by combining a PI controller to output total demand power.

The invention provides a control method and device for a solar ground source heat pump system. The control method and device can be applied to the technical field of building energy conservation and intelligent control. The method comprises the steps that nonlinear conversion is conducted on state information of the solar ground source heat pump system, and multiple pieces of control action information are obtained; executing equipment in the solar ground source heat pump system is controlled based on the target action information, and the running state of the solar ground source heat pump system is updated or kept; wherein the control agent is obtained by training in the following mode: an initial agent executes a current action in a virtual environment, and obtains reward information and post state information of the current action based on a reward function; and updating the intermediate agent based on interaction information obtained by interaction between the intermediate agent and the real environment to obtain a control agent meeting a preset condition.

The invention discloses a control method and device of a ground source heat pump system, the ground source heat pump system, a storage medium and a computer program product, the ground source heat pump system comprises a water tank, a floor heating device, an indoor heat exchanger and a ground source heat pump unit, and the method comprises the steps that the energy supply priority of the ground source heat pump unit is determined according to the outdoor environment temperature, the ground source heat pump unit is controlled to supply energy to the water tank, the indoor heat exchanger and the floor heating device according to the energy supply priority; in the process, the heat supply distribution proportion of the ground source heat pump unit is determined according to the temperature of the water tank, and the ground source heat pump unit is controlled to supply heat to the water tank and the floor heating device according to the heat supply distribution proportion. According to the scheme, by dynamically adjusting the energy supply priority and the heat supply distribution proportion of the ground source heat pump unit, the problems of fixed control priority and control lag are solved, and the system energy efficiency is improved.

The invention discloses a ground source heat pump buried pipe backfilling compactness real-time monitoring method, and relates to the technical field of ground source heat pump system construction quality control. The method comprises the following steps: acquiring grouting port pressure time sequence data Pin (t), measuring point pore pressure time sequence data Pi (t), slurry density rho and grouting port space coordinates in real time, extracting pressure wave propagation time to calculate the wave velocity, constructing a physical model for describing the corresponding relation between the wave velocity vp and the compactness D, inverting the measuring point compactness, and calculating the density of the grouting port. And a three-dimensional compactness distribution field is generated through spatial interpolation to identify a defect area, and after defect coordinates are converted into global coordinates, the grout supplementing amount and the grouting pressure are calculated, so that directional grout supplementing is achieved. The method is mainly used for real-time monitoring of compactness, accurate defect recognition and targeted reinforcement in ground source heat pump buried pipe backfilling construction, and construction quality is guaranteed.

The invention relates to the technical field of geothermal energy utilization, and discloses a geological stratification-based deep and shallow coupling ground source heat pump system optimization design method, which comprises the following steps of S1, acquiring geological stratification information of a target site, and thermophysical parameters, hydraulic parameters and mechanical parameters of each stratification; s2, aiming at a deep heat exchanger element and a shallow heat exchanger element; s3, an operation weight vector is introduced and used for defining the dynamic distribution proportion of building loads borne by the deep heat exchange system and the shallow heat exchange system in the whole life cycle; s4, establishing an optimization model taking the minimization of the total cost of the whole life cycle as a target function; s5, solving the optimization model by adopting an optimization strategy to obtain an optimal solution; and S6, outputting an integrated optimization design scheme according to the optimal solution. The physical layout design and the dynamic operation strategy are subjected to integrated collaborative optimization, the stratum heat-water-force coupling effect is comprehensively considered, and the cost of the whole life cycle is minimized.

The invention provides a permafrost region heat exchange system which comprises an underground heat exchange assembly, a road surface heat exchange assembly and a ground source heat pump system, the underground heat exchange assembly comprises a pipe pile and a first heat exchange pipe, the first heat exchange pipe is arranged in the pipe pile and is provided with a first working medium, and the pipe pile and the first heat exchange pipe are located in a foundation of a road and extend into a permafrost layer; the road surface heat exchange assembly comprises a second heat exchange pipe, and a second working medium is arranged in the second heat exchange pipe. And the ground source heat pump system, the first heat exchange pipe and the second heat exchange pipe form a first passage and a second passage. The first heat exchange pipe is pre-buried in the pipe pile, the first heat exchange pipe exchanges heat with the ground source heat pump system, and heat in a foundation is transferred to the ground source heat pump system. The road surface heat exchange assembly plays a role in heat preservation, heat of the second heat exchange pipe is effectively prevented from being conducted downwards, and the stability of the frozen soil layer is protected. The first heat exchange pipe can extract heat from the foundation in cold seasons, snow accumulated on the road surface is melted, and safe passing of the road is ensured.

The invention discloses a terrestrial heat collecting system and a construction and use method thereof, the terrestrial heat collecting system comprises a plurality of prefabricated terrestrial heat energy piles, an expansion cavity space is formed below each terrestrial heat energy pile, and the expansion cavity spaces are filled with circulating water for terrestrial heat exchange; a circulating water cavity is formed in the prefabricated geothermal energy pile, a heat exchange mechanism used for conducting heat exchange between the circulating water cavity and the expanded cavity space is arranged in the prefabricated geothermal energy pile, and the heat exchange mechanism comprises a heat exchange pipe located in the circulating water cavity and a heat exchange net located in the expanded cavity space. A release mechanism used for releasing the heat exchange net after construction of the energy pile is completed is arranged in the prefabricated geothermal energy pile; according to the prefabricated geothermal energy pile, the heat exchange structure is integrated into the prefabricated geothermal energy pile, and the energy pile can serve as a structural component and a heat exchange component, so that additional drilling or excavation for mounting a ground source heat pump system is not needed, and the land cost and the mounting cost are saved.

The utility model provides a cold, warm and hot water triple-generation system of a two-stage compression ground source heat pump. The cold, warm and hot water triple-generation system comprises a compressor, an intermediate heat exchanger, a buried heat exchanger, a plurality of other heat exchangers, a valve assembly and a solar heat collection assembly. The compressor comprises a low-pressure compressor and a high-pressure compressor; an outlet of the low-pressure compressor is connected with an inlet of the high-pressure The intermediate heat exchanger comprises a first intermediate heat exchanger and a second intermediate heat exchanger; other heat exchangers comprise an outdoor heat exchanger and an indoor heat exchanger; the first intermediate heat exchanger is connected with a low-pressure compressor outlet, the outdoor heat exchanger and the second intermediate heat exchanger. The second intermediate heat exchanger is connected with the indoor heat exchanger; the valve assembly comprises a three-way valve and a four-way valve. The ground source heat pump system solves the problems that an existing ground source heat pump system is single in function and low in working efficiency.

The invention provides a simulation method and system for a solar ground source heat pump system, and relates to the technical field of solar ground source heat pump system simulation, and the method comprises the steps: firstly obtaining a soil initial temperature field, and calculating the soil temperature cumulative variation in a future time period through a one-dimensional radial simplified heat transfer model in combination with a predicted load; defining as a soil thermal imbalance risk index; according to comparison between the index and a preset threshold value, selecting an efficiency priority strategy with solar energy immediate utilization as priority or a heat balance priority strategy with soil temperature field adjustment as priority; linkage rules of all subsystems are determined according to a selected strategy, the net heat exchange amount of a geographical pipe heat exchanger and the net heat storage / release amount of a heat storage device are calculated by jointly solving a dynamic model, and then the soil temperature field and the state of the heat storage device are updated; and the simulation step length is iteratively propelled until the period is ended, and finally, the system energy efficiency coefficient, the soil heat balance degree and the time-varying curve of the key parameters are output.

The present invention discloses a control method and system for an energy-saving ground-source heat pump, comprising: establishing a dynamic model of a ground-source heat pump system including an indoor heat balance, a ground-source heat pump unit, and a soil heat exchange model; obtaining its topological network through coupling; designing a distributed control and fault-tolerant operation strategy based on the topological network structure; locally controlling each node based on its location and information about adjacent nodes; constructing a state-space model; finding an optimal control action sequence through quadratic programming to balance energy consumption with an objective function of indoor and outdoor temperature deviation to achieve an optimal operating state; learning the mapping relationship between the optimal operating state and environmental parameters through a neural network; designing a ground-source circulation flow control algorithm to achieve automatic adjustment of the circulation pump flow distribution and the unit operating parameters. This method can effectively improve the control accuracy and stability of the ground-source heat pump system, ensure its reliable operation under complex working conditions, significantly improve energy utilization efficiency, achieve energy conservation and consumption reduction, and have good interpretability.

The utility model discloses a buried pipe ground source heat pump system arranged in a rectangular array mode, belongs to the field of common building structures, and solves the problem that a heat exchange vertical shaft of an existing buried pipe ground source heat pump system arranged in the rectangular array mode is prone to functional failure. A heat exchange water input end at the top end of the U-shaped buried heat exchange pipe in each hot well is communicated with one end of a respective ground heat exchange water input pipe, and the other end of the respective ground heat exchange water input pipe is communicated with an output end of a circulating water pump (5); heat exchange water output ends at the top ends of the U-shaped buried heat exchange pipes in the hot wells are communicated with respective ground heat exchange water output pipes, and the other ends of the respective ground heat exchange water output pipes are communicated with an input end of a circulating water pump (5); the sum of the length of the ground heat exchange water input pipe connected to the U-shaped buried heat exchange pipe in each hot well and the length of the ground heat exchange water output pipe connected to the U-shaped buried heat exchange pipe in each hot well is equal.

The present invention discloses a latent / sensible heat separation type dehumidification, refrigeration and fresh water production system driven by mine geothermal heat pump, which includes an ejector heat pump system, a mine air dehumidification system, an absorption ejector refrigeration system and a fresh water collection system; the ejector heat pump includes a heat pump low-temperature evaporator, a compressor, a heat pump ejector, a heat pump condenser and a heat pump high-temperature evaporator; the heat pump low-temperature evaporator, the compressor, the heat pump ejector and the heat pump condenser are sequentially closed-loop to form a first circulation loop, and the heat pump high-temperature evaporator, the heat pump ejector and the heat pump condenser are sequentially closed-loop to form a second circulation loop; the mine air dehumidification system includes a solution generator, a solution dehumidification absorber and a solution dehumidification condenser; the absorption ejector refrigeration system includes an absorption refrigeration generator and an absorption refrigeration condenser. This system improves the high-temperature and high-humidity working environment in the deep part of the mine, realizes the latent / sensible heat separation type dehumidification of the mine air, reduces the dehumidification energy consumption; realizes the cascade utilization of heat energy and realizes the production of fresh water with low power consumption.

The application belongs to the technical field of hydrogen energy comprehensive utilization, and particularly discloses an electricity, cold and heat multi-combined supply comprehensive utilization system and method based on hydrogen energy, which comprises a hydrogen fuel cell system, a heat exchanger, a hydrogen internal combustion engine, a flue gas hot water type lithium bromide unit and a ground source heat pump system. Cooling water of the hydrogen fuel cell system cooling pipe network exchanges heat with first circulating medium of the heat system in the heat exchanger, high-temperature flue gas of the hydrogen internal combustion engine flue gas pipe network and cylinder jacket water of the cylinder jacket water pipe network exchange heat with the first circulating medium in the flue gas hot water type lithium bromide unit, and the second circulating medium of the cold system is cooled in the flue gas hot water type lithium bromide unit. The ground source heat pump system comprises a ground source heat pump unit, and is used for exchanging heat between low-temperature circulating water of the ground source heat pump rock-soil side and the first circulating medium. The application fully utilizes hydrogen energy, uses waste heat generated by hydrogen fuel cell and hydrogen internal combustion engine to generate electricity, heating and cooling, and realizes hydrogen energy cascade utilization.

This application relates to a heat pipe energy pile and a heat pipe ground source heat pump system and its operation and management method, solving the technical problems of existing ground source heat pumps requiring additional power and consuming high energy, and being difficult to adapt to bidirectional energy supply in winter and summer. The system includes a pile foundation, heat pipes, a heat exchanger, and a heat pump unit. The heat pipe is integrated into the pile foundation and is a closed tube with a capillary wick, vacuumed, and filled with a phase change working fluid. It consists of an evaporation section at the bottom / side of the pile foundation and a condensation section at the top. The evaporation section exchanges heat with the soil, the condensation section is connected to the heat exchanger, and the heat pump ground source side is connected to the heat exchanger. The capillary wick drives the working fluid to flow back autonomously, realizing heat transfer or release. This application has the following effects: it resolves the contradiction between low energy consumption and year-round energy supply in existing technologies, achieves efficient bidirectional energy supply in winter and summer without additional power, and significantly reduces the energy consumption of building cold and heat source systems.

The invention relates to the field of energy system monitoring, in particular to a ground source heat pump system energy efficiency monitoring platform based on digital twinning, which comprises a buried pipe monitoring module, a heat exchange efficiency analysis module, a buried pipe state analysis module and a health state analysis module. Fluid data such as inlet and outlet temperature, flow and pressure and health state parameters such as vibration frequency, soil moisture content and fluid conductivity are synchronously collected through the buried pipe monitoring module, and the three directions of heat exchange, flowing and health of the buried pipe are comprehensively covered. The heat exchange qualification degree, the flow qualification degree and the health qualification degree are deduced through the buried pipe state analysis module, the influence coefficient is set according to the actual scene, the comprehensive energy efficiency degree is calculated, the health grade is divided according to the comprehensive energy efficiency degree, different treatment aging is formulated for the normal grade, the early warning grade and the abnormal grade of the buried pipe, and the treatment efficiency is improved. And corresponding treatment suggestions are generated according to the qualification conditions of the heat exchange qualification degree, the flow qualification degree and the health qualification degree.

The utility model provides an efficient energy-saving system for outputting green steam through coupling of shallow geothermal energy and a high-temperature heat pump, and belongs to the technical field of energy systems. The problem that an existing steam supply system cannot generate green steam energy is solved. Comprising a shallow ground source heat pump system and a high-temperature heat pump system which are connected in series, the shallow ground source heat pump system comprises a buried pipe heat exchange system, a ground source side automatic make-up pump, a water collector, a ground source side circulating water pump, a water segregator and a ground source heat pump host, and the buried pipe heat exchange system is connected with the water collector and the water segregator; the high-temperature heat pump system comprises a heat source side circulating water pump, an evaporator, a compressor, an electronic expansion valve, a condenser, a flash evaporator, a high-temperature hot water circulating pump, a preheater and a high-temperature heat pump automatic make-up pump; according to the utility model, renewable geothermal energy and certain electric energy are utilized for assistance, high-temperature steam is output, the production load requirement of the park is met, carbon emission is avoided, carbon sink is increased, and the economic benefit is high.

This application relates to a method and device for determining the supply and return water temperature difference of a ground source heat pump system, comprising: obtaining the target operating parameters of the ground source heat pump system at a target time; based on the target operating parameters, a first linear regression equation, and a second linear regression equation, performing iterative calculations using a time-varying system online parameter identification algorithm to determine the target network impedance coefficient and the target heat transfer attenuation coefficient at the target time, wherein the first linear regression equation is obtained by transforming the pump energy consumption equation including the network impedance coefficient factor, and the second linear regression equation is obtained by transforming the host energy consumption equation including the heat transfer attenuation coefficient factor; based on the target network impedance coefficient and the target heat transfer attenuation coefficient, summing the pump energy consumption equation and the host energy consumption equation to construct a total energy consumption objective function; and optimizing the total energy consumption objective function using a nonlinear optimization algorithm to obtain the optimal supply and return water temperature difference when the function value of the total energy consumption objective function is minimized.