53results about "Geothermal collectors" patented technology

This invention discloses a three-source coupled composite energy heat pump system and its control method, relating to the field of composite energy utilization and intelligent control. It addresses the problems of existing systems having a single energy coupling dimension, simple control strategies, and an inability to achieve multi-objective dynamic optimization. The system includes a solar heat exchange module, an air source heat exchange module, a geothermal heat exchange module, and a dynamic scheduling control module. The control module collects operating parameters of each module and user load, and calculates the dynamic contribution weights of the three energy sources based on an attention-based deep neural network model. This generates four coupled operating modes: solar-dominated, geothermal-stable, air-assisted, and optimal economical three-source hybrid mode, controlling the coordinated operation of each module. The model is optimized through offline pre-training and online fine-tuning, and the system also achieves dynamic correction of the control strategy through closed-loop feedback. This invention achieves intelligent dynamic coordinated scheduling of the three energy sources, improving the overall energy efficiency and operational economy of the system, and enhancing environmental adaptability and operational stability.

The application discloses a system and method for auxiliary coal and heat co-mining based on heat pipe effect, which comprises an overburden layer, a coal seam and a water-heat type geothermal reservoir from top to bottom, and a water storage pool, a water pumping pump, a buffer tank and a ground heat exchanger are arranged on the overburden layer; a roadway is excavated along a coal mining face in the coal seam, a vertical shaft is arranged in the overburden layer, and a water injection pipeline and a water return pipeline are arranged on two opposite side walls of the vertical shaft and the roadway respectively, the upper end of the water injection pipeline is connected with the ground heat exchanger, the water injection pipeline is connected with a booster through a first power circulation pump after entering the roadway, the underground pipeline output from the booster is continuously laid along the bottom, side and top of the roadway, the tail end of the underground pipeline is connected with the water return pipeline, the upper end of the water return pipeline is connected with the ground heat exchanger, and the underground pipeline, the water injection pipeline and the water return pipeline are provided with heat exchange medium. The application can realize efficient mining of the coal seam and geothermal resources, reduce the environmental temperature of the coal mining shaft roadway and achieve the effect of treating the heat damage in the underground mine.

This invention belongs to the field of geotechnical slope engineering technology, and provides a prefabricated slope soil nailing pipe based on self-circulating heat exchange technology and its construction method. The pipe includes a soil nail shell; a heat exchange assembly, which is disposed inside the soil nail shell and includes a thermosiphon rod and a heat exchange mechanism. The thermosiphon rod is located at the bottom of the soil nail shell, and the heat exchange mechanism is connected to the thermosiphon rod. The heat exchange mechanism absorbs and releases the heat transferred by the thermosiphon rod outward through the soil nail shell. A gravity-promoting drive component is installed inside the heat exchange mechanism to accelerate the flow of the heat exchange medium within the mechanism, ensuring heat exchange between the soil nail shell and the heat exchange mechanism even when the shell is not vertical; and a heat dissipation assembly, which is disposed inside the soil nail shell and connected to the heat exchange mechanism. The heat dissipation assembly releases the heat dissipated by the heat exchange mechanism into the air. This invention can provide stable support for slopes in cold regions and frozen soil beneath the slope.

The application provides a multi-scale perturbation enhanced coaxial type middle-deep geothermal heat exchanger, which comprises an outer sleeve pipe, an inner return pipe and a perturbation module, the inner return pipe is arranged in the outer sleeve pipe, a gap exists between the outer wall of the inner return pipe and the inner wall of the outer sleeve pipe, the gap is an annular gap flow channel, the perturbation module comprises a plurality of main guide vanes, a V-shaped guide vane array and a micro convex point array, the V-shaped guide vane array comprises a plurality of V-shaped guide vanes, the V-shaped guide vane array is located downstream of the main guide vanes, the micro convex point array comprises a plurality of convex points, and the micro convex point array is arranged in the leeward area of the main guide vanes and the V-shaped guide vane array.

The application relates to a multi-connection type carbon dioxide closed circulation stratum heat exchange system and relates to the field of stratum heat exchange technology equipment, which comprises a vertically arranged main pipe, a branch pipe is vertically arranged on the outer side of the main pipe, the bottom end of the branch pipe is fixedly connected with the side wall of the main pipe, the inside of the branch pipe is communicated with the inside of the main pipe, and multiple branch pipes are arranged on the outer side of the main pipe. The application has the effects of improving the heat exchange efficiency of the system and enhancing the operation flexibility of the system for heat extraction and heat supplement from the stratum.

The present application relates to the technical field of pipeline engineering, and particularly relates to a ground source heat pump buried pipe lowering assembly, which comprises a U-shaped pipe, further comprises a righting unit, the righting unit is provided with a plurality of righting units and is uniformly connected to the U-shaped pipe, the righting unit comprises two righting parts which are symmetrically distributed and detachably connected to the U-shaped pipe, at least two anti-floating parts are connected to the righting part, and a lifting part for changing the state of the anti-floating part and the righting part is connected to the anti-floating part. The righting unit can guide and protect the U-shaped pipe during the process of lowering the U-shaped pipe into the buried pipe hole, avoid the collision or friction between the U-shaped pipe and the wall of the buried pipe hole, and prevent damage, and the righting unit cooperates with the traction unit, so that the automatic centering function of the U-shaped pipe and the anti-floating function of the U-shaped pipe can be realized by only one drive, thereby reducing equipment investment and operation and maintenance costs.

A geothermal reactor well system includes a closed-loop well coupled to one or more sources of reactants. The closed-loop well includes a first surface wellbore extending from a terranean surface to a geothermal subterranean zone and a second surface wellbore extending from the surface to the zone. A plurality of connecting wellbores connect the first surface wellbore to the second surface wellbore. At least a portion of the connecting wellbores are sealed against communication of fluids with the surrounding geothermal subterranean zone. A carrier fluid is disposed within the closed-loop well. The closed-loop well is configured so heat energy from the geothermal subterranean zone and / or reaction of reactants in the closed-loop well drives the fluids in the closed-loop well to circulate by thermosiphon and to thereby carry the reactants through the closed-loop well for the reaction and carry a product of the reaction through the closed-loop well for collection.

A slurry for enhancing geothermal recovery in a subterranean heat reservoir comprises thermal particles and a carrier fluid. The thermal particles have a selected volume, composition and physical properties sufficient to form a thermal pathway in the reservoir with a particle pack thermal conductivity that meets or exceeds a target thermal conductivity at a thermal pathway stress load of the reservoir. The carrier fluid has a selected fluid volume and viscosity sufficient for the slurry to be injected into openings of the reservoir at an injection pressure higher than the reservoir stress value.

This utility model relates to the field of energy utilization technology, and provides a dual-circulation geothermal energy harvesting device, which includes a heat collection pipeline and a heat exchange pipeline. The heat collection pipeline is a closed pipeline with a heat exchange medium flowing inside. The heat collection pipeline is laid in underground rock strata or soil to collect underground thermal energy. The heat exchange pipeline is arranged in parallel with the heat collection pipeline and forms a heat conduction contact. The heat exchange pipeline has an inlet connected to a surface water source through a water supply pipeline and an outlet connected to a surface water storage tank through a water supply pipeline. The above technical solution maximizes the contact area between the heat collection pipeline and the heat exchange pipeline by arranging them in parallel and forming a heat conduction contact, providing sufficient space for heat transfer. The design of opposite fluid circulation directions within the two pipelines forms a counter-current heat exchange mode. Compared with co-current heat exchange, counter-current heat exchange can maintain a larger temperature gradient along the entire contact length, thereby significantly improving heat transfer efficiency.

This system provides a silica scale generation prediction system that can predict the amount of silica scale generated with greater accuracy. [Solution] The silica scale generation prediction system according to the present invention is based on the temperature T at the predicted site of the target object. s A prediction formula PF for silica concentration C, which depends on the silica concentration, and the time t until the silica-containing fluid reaches the predicted site. s The system includes a silica scale generation prediction unit that predicts the amount of silica scale generated at a predicted site based on at least one of the silica concentration C prediction curve PC which depends on the silica concentration C, wherein the silica concentration C prediction formula PF and the silica concentration C prediction curve PC are obtained based on a reaction model generated using a silica polymerization reaction that includes reversible and irreversible reactions and precipitation equilibrium reactions of silica contained in the fluid, and the silica scale generation prediction unit calculates the amount of silica scale generated at the predicted site using at least one of the initial silica concentration Ci and the fluid flow rate FR.

This invention belongs to the field of solar photovoltaic and photothermal technology, and particularly relates to a photovoltaic and photothermal system. The photovoltaic and photothermal system includes: a photovoltaic and photothermal module for converting solar energy into electrical and thermal energy, comprising, from top to bottom, a photovoltaic power generation layer, a heat-conducting cover plate, and a heat dissipation substrate, wherein the heat dissipation substrate integrates heat exchange channels for fluid flow; a ground source heat exchange unit, disposed below the ground surface, comprising vertically buried concrete pipe piles and heat exchange buried pipes inserted into the concrete pipe piles; and a circulation pipeline connecting the heat exchange channels of the heat dissipation substrate with the heat exchange buried pipes of the ground source heat exchange unit to form a closed loop, wherein a circulating working fluid circulates in the closed loop under the action of a driving device, transporting the heat generated by the photovoltaic and photothermal module to the ground source heat exchange unit.

The "Energia Nostra Power Plant" uses the heat from magma, lava and adjacent high-temperature layers for generating electricity, heat, fresh water, salt and chemical products. Heat-resistant tubes transmit the heat via a heat transfer medium (e.g. liquid sodium, supercritical CO2, helium or liquid metals) to a secondary circuit where high-pressure steam is generated. The residual heat is used for cooling, direct heating, district heating and heat storage. Artificial intelligence optimizes operation and monitors the system in real time. The modular structure makes it possible to adapt to volcanic regions or geothermal hotspots. This versatile system offers a sustainable and emission-free energy source and addresses global challenges such as climate change and resource protection. Applications range from civilian and industrial processes to national defence and urban supply.

The utility model discloses a kind of geothermal buried pipe heat exchangers. Protective structure includes the protective shell for protecting heat exchanger body, the lower end of protective shell is equipped with the limiting seat for supporting heat exchanger body, limiting seat includes limiting disc, the upper end of limiting disc is equipped with the pressure relief groove for the surface of protective shell is relieved. The utility model is relieved by the setting of protective structure, when soil extrusion protective shell, the external pressure of protective shell is increased, extruded soil can be moved to the both sides of protective structure by connecting hole, inclined hole one and inclined hole two, soil enters pressure relief groove by inclined hole two, reduce the pressure of protective shell to soil, so that protective shell is not prone to deformation, and then effectively protect heat exchanger body.

A groundwater heat exchanger includes a distributor, a collector, a plurality of heat exchange pipes, and a return pipe. The distributor includes a first interior chamber and a first port to the first interior chamber. The collector includes a second interior chamber and a second port to the second interior chamber. The plurality of heat exchange pipes each have a first end attached to the distributor and a second end attached to the collector, extend along a central axis, and define a fluid passageway between the first and second interior chambers. The return pipe is fluidically connected to the second interior chamber and includes a section extending through the distributor that is transverse to the central axis.

This invention belongs to the field of building construction technology, and specifically relates to a non-electrified pneumatic dewatering device for building foundations. It includes an air storage tank, a controller connected to the side wall of the tank, a support frame connected to the side wall of the tank, and an air compressor connected to the upper side wall of the support frame. This fully automated pneumatic dewatering technology can complete foundation pit dewatering tasks with high quality and quantity, offering significant economic and environmental benefits. It not only powerfully promotes the improvement of project technological efficiency and green construction standards, but also demonstrates high promotional value in improving energy efficiency and upgrading the automation level of engineering construction. It can be widely applied under different geological and hydrological conditions and continuously optimized and improved to fully release the core functional value of fully automated pneumatic dewatering technology in the field of engineering dewatering.

This invention discloses a concrete for geothermal energy piles. The raw materials of the concrete include cementitious materials, fine aggregates, coarse aggregates, mixing water, and a water-reducing agent. Based on 100 parts by weight of the total weight of the cementitious materials, the components are: 100 parts by weight of cementitious materials, 165-185 parts by weight of fine aggregates, 210-230 parts by weight of coarse aggregates, 32-38 parts by weight of mixing water, and 1.0-1.3 parts by weight of water-reducing agent. The cementitious materials include cement, mineral powder, fly ash, activated magnesium oxide, and activated alumina micropowder. The coarse aggregates include cordierite aggregates pretreated with alkali thermal activation. This invention can reduce the coefficient of thermal expansion, meet the bearing requirements of pile foundations, and effectively resist the stress generated at the aggregate-slurry interface due to temperature cycles.

This invention discloses an integrated method for geothermal development of oil shale and CO2 geological storage, relating to the development of complex oil and gas reservoirs. The method includes: designing U-shaped well process parameters to allow CO2 fluid to flow through the downslope section of the U-shaped well to the high-temperature geothermal reservoir. After sufficient heat exchange, the CO2 fluid is injected into the oil shale reservoir along the upslope section of the wellbore to preheat the oil shale layer and achieve geothermal extraction and utilization; after the oil shale layer temperature rises to the target temperature, artificial heating is used to further heat the oil shale layer, achieving in-situ conversion and development of the oil shale; after completion, the produced CO2 is reinjected into the oil shale layer through the U-shaped well, realizing the coordinated development of CO2 geological storage, geothermal extraction, and in-situ conversion of oil shale. This invention utilizes CO2 to efficiently extract geothermal energy for in-situ pyrolysis of oil shale, significantly reducing the additional artificial heating costs required for in-situ conversion of oil shale, and improving the economic feasibility of pure storage projects and in-situ conversion and development of oil shale.

The present application relates to geothermal energy development and heat utilization field, especially to a kind of super-long gravity heat pipe type geothermal development system for offshore abandoned oil and gas well, system includes: offshore abandoned oil and gas well, super-long gravity heat pipe, heat user, cold source and underground carbon dioxide storage area;The super-long gravity heat pipe is arranged in the offshore abandoned oil and gas well, and the bottom of the super-long gravity heat pipe is at least partially deep into underground carbon dioxide storage area, and the working medium outlet of the super-long gravity heat pipe is connected with the heat user, and the heat user is driven by power generation equipment, and the cold source is used to cool the heat user.This system successfully realizes the development and reuse of offshore abandoned oil and gas well geothermal resources, without additional pump work auxiliary, simple structure, low maintenance cost;At the same time, by using the natural convection effect of carbon storage, the heat exchange process of underground reservoir is strengthened, and the heat extraction amount is significantly improved.

This utility model discloses a groundwater source heat pump system for measuring energy consumption, comprising: a central workstation consisting of a PC host, a monitor, and a printer, used for centralized management of equipment and displaying system energy efficiency ratio and energy consumption data; a controller configured to control the controlled equipment through data acquisition, processing, algorithm execution, and control command output; sensors and actuators, wherein the sensors are used to collect field signals, and the actuators are used to execute control commands; and a groundwater source heat pump system including an outdoor heat exchange side, a heat pump room, and terminal central air conditioning equipment, used to provide energy services for the building.

The provided is a data center-based multi-energy complementary system, including a data center, an energy pile group, a storage battery, an inverter, a solar photovoltaic / thermal (PV / T) panel, a medium-deep borehole heat exchanger (MDBHE), a chiller, a user, an absorption refrigeration unit, a chilled water tank, a supply header, a return header, a waste heat pump unit, a hot water storage tank, a ground source heat pump (GSHP) unit, a cold-hot water tank, a plurality of four-way valves, a plurality of valves, a plurality of cooling towers, a plurality of water circulating pumps, and a plurality of plate heat exchangers. Various devices are connected to form different loops. The provided constructs a hierarchical heat storage system by means of the energy pile group in the shallow geostructure and the MDBHE, and realizes cascaded energy utilization in combination with the solar PV / T panel technology, thereby forming an integrated system.

A method and system for forecasting and optimizing the performance of earth tube air exchange systems using machine learning algorithms. The invention receives measured exit air temperature data across various annual periods and outdoor temperature ranges, determines predicted temperature differences across the earth tube, and provides these predictions to HVAC design or operation modules. The system refines its forecasts over time based on actual outcomes, generates alerts or recommendations when performance deviates from thresholds, and stores both forecasted and actual data for long-term analysis and optimization. This approach enables improved accuracy in system design, operation, and maintenance, resulting in enhanced energy efficiency and reliability.

The application provides a high-altitude permafrost area geothermal well coaxial integrated wellhead device and an installation process thereof, and belongs to the technical field of geothermal heating. The device comprises a wellhead cavity, which is fixedly connected with an oil casing of a geothermal well; a PERT inner pipe, which is arranged inside the wellhead cavity and extends vertically and is communicated with a downhole heat exchange system; a water inlet pipeline assembly, which comprises a water inlet branch pipe that is communicated with the wellhead cavity and is arranged laterally; a water outlet pipeline assembly, which is arranged in a manhole and comprises a water outlet pipe that is communicated with the PERT inner pipe and is arranged at the upper portion of the wellhead cavity; a water inlet passage and a water outlet passage that are coaxially arranged in the wellhead cavity. The device has the advantages of high integration, reliable sealing, strong anti-freezing and anti-settling capacity, and can effectively adapt to the high-altitude permafrost environment, has good heat preservation and corrosion prevention effects, can well meet the long-term stable operation requirements in high-cold areas, and is convenient to install and has high construction efficiency.

The invention concerns a hybrid solar power generation system comprising:a set of photovoltaic panels,a first loop circuit containing a heat-carrying fluid able to circulate along the first loop circuit, said first loop circuit defining a first portion for circulation of the fluid in a first temperature range, a second portion adjacent to said photovoltaic panels for thermal exchange between the fluid and said photovoltaic panels and a third portion for circulation of the fluid in a second temperature range, wherein the temperatures of the second temperature range are greater than the temperatures of the first temperature range,a heat pump with a second loop circuit containing a heat-carrying fluid, said second loop circuit passing successively through an evaporator, a compressor, a condenser and a metering device, where the heat source of said evaporator is the heat-carrying fluid present in said third portion of the first loop circuit, anda Stirling engine, where the Stirling engine's heat source derives from heated fluid refrigerant present in a portion of the second loop circuit placed between the compressor, and the metering device.

A process heat exchange rod for cooling or heating liquids in a process vessel. The rod may have a linear form and extend downward through an upper wall of the process vessel into proximity with the lower floor. The rod internally defines a circulatory flow path for the heat exchange medium, including an outer jacket and a flow diverter having a central through bore and external helical flutes. Heat exchange medium travels down through the central through bore and then back up through helical grooves formed between the flow diverter and the outer jacket, or vice versa. Accurate heating or cooling of the process fluid is attained by modification of the configuration of the heat exchange rod as well as the flow rate and temperature of the heat exchange medium. The components may be injection molded of a polymer, often transparent, having a high heat transfer coefficient.

A multi-heat source steam supply system and a use method thereof, comprising a middle-deep geothermal energy combined cascade heat pump steam system, a solar heat collector and a heat storage system; the middle-deep geothermal energy combined cascade heat pump steam system comprises a low-temperature stage heat pump system, a high-temperature stage heat pump system and a steam generation system; and the heat storage system comprises a phase change heat storage device and a second water tank. Through the multi-energy complementation and the phase change heat storage technology, the instability of single energy supply is effectively overcome, the basic temperature rise is borne by the cascade heat pump to reduce the working pressure ratio and energy consumption of the water vapor compressor, the COP of the system is significantly improved, and the fossil energy consumption and pollution emission of the traditional boiler are greatly reduced; meanwhile, the two-part electricity price mechanism is deeply used, the heat is stored in the low electricity price period and released in the high electricity price period, the energy cost is significantly reduced, and in addition, through the water pump driven flow regulation, the spatial cascade utilization of heat energy and the dynamic matching of supply and demand are realized, and the dynamic stability and energy utilization efficiency of the system are enhanced.

This invention provides a multi-segment independent ultra-long gravity heat pipe system, comprising several composite segments arranged sequentially along a depth direction and a ground-based heat pump unit installed on the ground. The length of the bottom composite segment along the depth direction is shorter than the length of the top composite segment. The top composite segment is connected to the ground-based heat pump unit through a steam outlet and a liquid return outlet at its top. Each composite segment consists of several heat pipes, including evaporator heat pipes, adiabatic heat pipes, and heat exchanger heat pipes. The bottom of each composite segment has one heat exchanger heat pipe, and the top of each heat exchanger heat pipe has multiple evaporator heat pipes or adiabatic heat pipes. The bottommost composite segment has no heat exchanger heat pipe. This invention also provides a geothermal extraction method using the aforementioned multi-segment independent ultra-long gravity heat pipe system.

The application discloses a geothermal casing heat exchanger in the technical field of geothermal downhole heat exchange, which comprises an outer casing and an inner casing, and further comprises side flow-out holes, a bottom outlet opening and closing assembly and an internal linkage switching assembly; a plurality of side flow-out holes are penetrated at different depths of the inner casing, and the internal linkage switching assembly and the bottom outlet opening and closing assembly are arranged near each side flow-out hole inside the inner casing; a bottom outlet is arranged at the lower end of each side flow-out hole; the internal linkage switching assembly is in sliding connection with the inner wall of the inner casing, slides downward to close the side flow-out hole when the top fluid pressure reaches the upper limit, and slides upward to open the side flow-out hole when the top fluid pressure is lower than the lower limit; the bottom outlet opening and closing assembly is located at the lower end of the internal linkage switching assembly, opens the bottom outlet when the internal linkage switching assembly slides downward, and pushes the internal linkage switching assembly to slide upward and close the bottom outlet when the top fluid pressure of the internal linkage switching assembly is lower than the target lower limit. The application has high adaptability, simple structure and convenient operation and maintenance.

This invention relates to an energy pile and its embedding method. The energy pile includes a PHC pipe pile, a high thermal conductivity permeable concrete core cast within the pipe pile, a reinforcing steel cage embedded in the core, and a heat exchange tube. The lower part of the PHC pipe pile has multiple radially extending through holes evenly distributed circumferentially. The reinforcing steel cage is a cylindrical steel mesh arranged coaxially with the PHC pipe pile. The heat exchange tube is fixed inside the steel mesh. The invention also relates to an embedding method using the aforementioned energy pile. In this invention, the high thermal conductivity permeable concrete core is confined within the PHC pipe pile, which plays a primary load-bearing role, preventing the high thermal conductivity permeable concrete from cracking and failing under high load conditions. Simultaneously, the multiple radially extending through holes evenly distributed circumferentially at the lower part of the PHC pipe pile ensure that after embedding, the through holes are below the groundwater level, facilitating direct energy exchange between groundwater and the high thermal conductivity permeable concrete, aluminum annular fins, and heat exchange tube, significantly improving thermal conductivity.

The present application belongs to the technical field of geothermal resource development, and discloses a geothermal well system and a construction method thereof. The geothermal well system comprises an outer sleeve, an inner sleeve, a first quick connector, a second quick connector, a sealing element and a heat preservation cylinder. An arc-shaped heat exchange channel is formed between the bottom of the outer sleeve and the lower cylinder opening of the inner sleeve. The first quick connector can be installed on the ground and detachably connected with the second quick connector. The outer sleeve passes through the first quick connector. The second quick connector is sleeved on the outer sleeve and sealingly connected with the outer cylinder wall of the outer sleeve. The sealing element is used for plugging the upper cylinder opening of the outer sleeve. The heat preservation cylinder can be installed on the ground. The upper end of the outer sleeve is located in the inner cavity of the heat preservation cylinder. The inner sleeve sealingly passes through the first quick connector, the second quick connector, the inner cavity of the heat preservation cylinder and the sealing element. The geothermal well system improves the heat exchange efficiency, reduces the on-site construction difficulty and heat energy loss, and can meet the stable and efficient heating and energy supply demand of ultra-low energy consumption buildings.