555results about "Collector components/accessories" patented technology

The invention discloses an efficient cross-season energy storage energy pile, and relates to the technical field of new energy and energy conservation. The problems that in an existing energy storage system, the thermal load prediction error is large, underground thermal diffusion attenuation is caused, the heat exchange capacity is lowered, and the geological adaptability is insufficient are solved. According to the scheme, an LA mixed time sequence prediction model is adopted to optimize load prediction, a distributed optical fiber temperature measurement array and a finite element inversion algorithm are combined to accurately reconstruct a stratum temperature field, and the geological type is identified based on a support vector machine classifier to realize self-adaptive regulation and control of heat exchange parameters; meanwhile, the heat pump power, the circulating pump frequency and the heat charging and discharging rate of the phase change material are optimized through a depth deterministic strategy gradient algorithm and a gradient heat release strategy; the heat exchange efficiency, the long-term stability and the complex environment adaptability of the cross-season energy storage system are remarkably improved, and the energy-saving effect of a building energy supply system is improved.

The present disclosure relates to a system for utilizing waste heat of a data center. The system comprises a first heat exchange module, a second heat exchange module, a heat storage and extraction flow path, a heat supply flow path and a buried pipe, wherein the first heat exchange module is used for connecting to a data-center heat dissipation system for dissipating heat of a data center, and both the heat storage and extraction flow path and the heat supply flow path are connected to the first heat exchange module, so that the first heat exchange module can transfer, to the heat supply flow path and / or the heat storage and extraction flow path, heat which is generated by the data center and absorbed by the data-center heat dissipation system; the second heat exchange module is connected in the heat storage and extraction flow path and the heat supply flow path, so that heat exchange can be performed between the heat storage and extraction flow path and the heat supply flow path; and the heat storage and extraction flow path is provided with the buried pipe, which is configured to be buried below the ground surface, and is used for storing, in soil below the ground surface, the heat which is transferred from the data-center heat dissipation system to the heat storage and extraction flow path, or for transferring, to the heat supply flow path via the second heat exchange module, the heat which is stored in the soil below the ground surface.

A system and method for geothermal heat production. A balanced geothermal energy transfer loop includes a first wellbore and a second wellbore extending from surface to a subterranean geothermal formation and a plurality of balanced open hole circuits extending between the first wellbore and the second wellbore through the geothermal formation, forming a substantially sealed closed loop. Each of the plurality of circuits is designed or modified to have a substantially equal circuit parameter. The circuit parameter may include one or more of circuit fluid velocity, circuit pressure drop, circuit volume and / or circuit length. The circuit parameter may include circuit length and volume, and the circuits connect the supply / return wells in a first out / last in configuration.

A system for utilizing waste heat of data center, which includes a first heat exchange module, a second heat exchange module, a heat storage and extraction flow path, a heat supply flow path and a buried pipe; both the heat storage and extraction flow path and the heat supply flow path are connected with the first heat exchange module, the second heat exchange module is connected in the heat storage and extraction flow path and the heat supply flow path, the buried pipe is arranged in the heat storage and extraction flow path, and the buried pipe is configured to be buried below a ground surface and store the heat transferred by the data center heat dissipation system into soil below the ground surface, or transfer heat stored in the soil below the ground surface to the heat supply flow path through the second heat exchange module.

A method includes determining a specified demand as a function of time of thermal energy from a heat exchanger of a heat pump. The heat pump is configured to transfer thermal energy to the heat exchanger from a geothermal working fluid circulating in a closed-loop geothermal well. The closed-loop geothermal well includes a first surface wellbore extending from a terranean surface to a geothermal subterranean zone, a second surface wellbore extending from the terranean surface to the geothermal subterranean zone, and plurality of connecting wellbores connecting the first surface wellbore to the second surface wellbore The heat output from the heat exchanger is controlled to meet a specified demand by adjusting at least one of a flow rate or inlet temperature of the geothermal working fluid in the closed-loop geothermal well.

Methods and systems are provided for extracting thermal energy from a geothermal reservoir. One aspect involves drilling at least one sidetrack that extends from a primary wellbore and intersects at least one fracture target in the geothermal reservoir. The at least one sidetrack can be configured to increase fluid flow into the primary wellbore from the at least one fracture target. The increase of fluid flow into the primary wellbore from the at least one fracture target as provided by the at least one sidetrack can increase the amount of captured heat from the geothermal reservoir.

Provided is a method of constructing a geothermal heat exchanger comprised of a geothermal well(s) that maximizes heat transfer from sweet spots of geothermal energy of a geothermal reservoir to the geothermal well(s). The method involves dynamically identifying the sweet spots, and selecting a predetermined shape and / or increasing a dimension of the geothermal well(s) within the sweet spots to increase a surface area of contact between the geothermal well(s) and the sweet spots. The method further involves calculating a mathematical best fit line to minimize a distance between the geothermal well(s) and the sweet spots, and forming at least a part of the geothermal well(s) to, or to a proximity of, the sweet spots along the mathematical best fit line. Methods may include increasing an effective thermal radius of the geothermal well(s) by geothermal fracturing, geothermal acidizing, or geothermal multilateral wells, and embedding thermal energy storage (TES) materials therein.

Methods and systems for geothermal energy production wherein multiple horizontal or vertical wells may be used to pass fluids through the Earth from an injector well to a producer well through induced cracks, splits, fractures, conduits, or channels in the rock. Such methods and systems may include controlling tensile-split conduits in a subterranean geothermal formation by providing an injection well, providing a production well, configuring the injection well for injection of a tensile-splitting fluid into a production zone, configuring the production well to produce a heated fluid from the production zone, applying pressure to the production well, creating a plurality of tensile-split conduits, raising or lowering the pressure in the production well, establishing fluid communication between the injection well and the production well, and producing the heated fluid to the surface.

The invention discloses a geothermal hot spring pool thermovolt power generation and water temperature regulation and control combined system which comprises a hot spring pool and a thermovolt power generation device. A thermal insulation wall is arranged in the hot spring pool, the hot spring pool is divided into a hot spring power generation battery and a hot spring recuperating pool through the thermal insulation wall, and the thermovolt power generation device is arranged in the hot spring power generation battery; a geothermal water inlet is formed in the hot spring generating battery, and high-temperature geothermal water enters the hot spring generating battery through the geothermal water inlet; a temperature control valve system is arranged in the hot spring recuperation pool and used for controlling the temperature of hot water entering the hot spring recuperation pool. The pulsating heat pipe and the thermovolt power generation technology are creatively integrated, natural hot spring heat energy is fully utilized, temperature difference energy between hot spring water and cold water is utilized to the maximum extent before the temperature is reduced to the comfortable temperature of a human body, and the pulsating heat pipe is utilized to effectively increase the heat exchange area and heat extraction capacity; meanwhile, the thermovolt power generation chip is adopted to directly convert hot spring heat energy into electric energy, and the dual functions of hot spring water temperature adjustment and geothermal power generation utilization are achieved.

The various embodiments described herein include systems and methods for constructing geothermal fields. In one aspect, a system for constructing a geothermal field comprises a coiled tubing. The coiled tubing is configured for drilling one or more boreholes of the geothermal field. The coiled tubing is configured for inserting one or more geothermal loops into the one or more boreholes. The coiled tubing is also configured for grouting the one or more geothermal loop.

The present disclosure provides a non-condensable gas reduction system that is easy to maintain and returns non-condensable gas contained in geothermal fluid to a reduction well. [Solution] A non-condensable gas reduction system for use in a geothermal power plant comprising a gas-liquid separator that separates geothermal fluid flowing from a production well into a first gas and a first liquid, an evaporator that performs heat exchange between the first gas and a working medium, a turbine that rotates by the working medium discharged from the evaporator, and a condenser that cools the working medium that rotates the turbine and condenses the working medium into a liquid, the non-condensable gas reduction system comprising: a pump that pressurizes a third liquid to be sent to a reinjection well; and an ejector driven by the third liquid, that attracts non-condensable gas contained in the first gas and remaining uncondensed in the evaporator, and discharges a fourth liquid which is a mixture of the third liquid and the non-condensable gas, wherein the first liquid and the fourth liquid are mixed and sent to the reinjection well.

Methods and systems for geothermal energy production wherein multiple horizontal or vertical wells may be used to pass fluids through the Earth from an injector well to a producer well through induced cracks, splits, fractures, conduits, or channels in the rock. Such methods and systems may include controlling tensile-split conduits in a subterranean geothermal formation by providing an injection well, providing a production well, configuring the injection well for injection of a tensile-splitting fluid into a production zone, configuring the production well to produce a heated fluid from the production zone, applying pressure to the production well, creating a plurality of tensile-split conduits, raising or lowering the pressure in the production well, establishing fluid communication between the injection well and the production well, and producing the heated fluid to the surface.

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 an ultra-deep well type hydroelectric generation method utilizing geothermal energy and cold and hot water density difference, and solves the problem that geothermal energy cannot be generated and utilized by a water turbine since underground hot water is pumped by a water pump for use in traditional geothermal energy utilization. Comprising the following steps of S1, exploration well drilling, S2, well bottom crack manufacturing, S3, center pipe deployment, S4, cold water is injected between the center pipe and a sleeve, after the cold water is heated by a dry hot rock stratum at the bottom of the exploration well, hot water rises from the center pipe, and the water head difference between the interior and the exterior of the center pipe is formed through the specific gravity difference of the hot water and the cold water. Hot water conveyed to the ground by the central pipe impacts the water turbine for power generation. A heat collection point is a dry hot rock stratum, the influence on underground water is reduced, the inertial thinking that height potential energy of water flow needs to be utilized in traditional water turbine power generation is broken through, and a brand-new water flow from bottom to top hydroelectric generation mode is provided.

According to the charging station heat exchange method based on the ground source system, a ground source heat pump system is adopted as heat exchange equipment, and the heat exchange efficiency of a charging station is effectively improved through underground low-temperature heat energy; real-time regulation and control of the battery temperature of the new energy automobile are achieved by regulating and controlling the operation parameters of the ground source heat pump unit in real time, and safe operation of the battery is guaranteed; the heat generated by the charging pile and the new energy automobile is recovered and recycled, the energy consumption of the charging station is reduced, and the problems that the heat dissipation effect of an existing charging station heat dissipation mode is greatly influenced by the environment temperature, and the heat dissipation effect is poor in high-temperature weather are solved; an air cooling system is loud in noise and affects the surrounding environment; a water cooling system needs to replace cooling liquid at regular intervals, and the maintenance cost is high.

A method of operating a thermal system implementing a ground-source heat pump includes receiving design parameters associated with a design of the thermal system and receiving one or more measurement inputs associated with a flow of a thermal fluid through a borefield of a ground heat exchanger. The method further includes, based on the measurement inputs and the design parameters, predicting one or more predicted thermal values of the thermal fluid using a forward model. The method further includes predicting one or more predicted borefield parameters of the borefield based on inverting the forward model. The method further includes monitoring the thermal system based on the predicted borefield parameters.

The present disclosure describes a system and a method for generating energy from geothermal sources. The system includes an injection well and a production well extending underground into a rock formation, a first lateral section connected to the injection well and a second lateral section connected to the production well, the first and second lateral sections connected with a multilateral connector, defining a pressure-tested downhole well loop within the rock formation and in a heat transfer arrangement therewith. The downhole well loop cased in steel and cemented in place within the rock formation. The downhole well loop to receive working fluid capable of undergoing phase change between liquid and gas within the downhole well loop as a result of heat transferred from the rock formation. The system also includes a pump to circulate working fluid, a turbine system to convert the flow of working fluid into electricity, and a cooler.

Methods and systems are provided for extracting thermal energy from a geothermal reservoir. One aspect involves drilling at least one sidetrack that extends from a primary wellbore and intersects at least one fracture target in the geothermal reservoir. The at least one sidetrack can be configured to increase fluid flow into the primary wellbore from the at least one fracture target. The increase of fluid flow into the primary wellbore from the at least one fracture target as provided by the at least one sidetrack can increase the amount of captured heat from the geothermal reservoir.

An apparatus to be positioned in a geothermal wellbore formed in a subsurface formation. The apparatus comprises one or more components to inject a supercritical fluid into the subsurface formation. The apparatus comprises a flow control assembly configured to control flow of the supercritical fluid into the geothermal wellbore based on a density of the supercritical fluid in the subsurface formation.

The invention relates to the technical field of multi-source data fusion and grid modeling, and discloses a shallow geothermal energy development modeling method, system and equipment based on multi-source data fusion. The method comprises the following steps: performing joint interpolation on shallow geothermal data, engineering geological data and hydrogeological data to generate a virtual drill hole; constructing a ground temperature grid model according to shallow geothermal data, virtual drilling and anisotropic interpolation constraints; performing step-by-step color setting and rendering on the shallow geothermal attribute grade of the geothermal grid model to obtain a visual geothermal grid model; and generating a stepped temperature distribution profile map and a temperature contour line according to the ground temperature grid model so as to display stepped features of temperature distribution. According to the method, the high-precision and high-reliability ground temperature grid model is constructed through multi-source data fusion, virtual drilling generation and anisotropic modeling technologies, and the model not only can generate a stepped temperature distribution profile map and a temperature contour line, but also can improve the geological parameter inversion precision and the thermal reservoir prediction reliability.

The invention relates to a concentrated solar energy and terrestrial heat coupling long-time energy storage and control system and method. The system comprises a concentrated solar energy collection system, a heat energy conversion and transmission system, a terrestrial heat long-time energy storage system, a heater module and an energy utilization system. The concentrating solar energy collecting system is used for focusing sunlight and converting the focused solar energy into heat energy; the heat energy conversion and transmission system is used for receiving heat energy from the concentrating solar energy collection system and transmitting the heat energy to the geothermal long-time energy storage system or directly used for power generation; according to the geothermal long-time energy storage system, the natural heat storage characteristic of underground deep rocks is utilized, and heat energy is stored by injecting high-temperature hot fluid; the heater module is used for heating an organic working medium by using heat energy stored by high-temperature hot fluid from a hot well through heat exchanger equipment; the energy utilization system is used for achieving the gradient utilization process of energy. The utilization efficiency of concentrated solar energy and the sustainable utilization rate of geothermal energy are improved. And maximum storage and efficient output of energy are realized.

A fissure with controlled geometry is formed in hot dry rock by iterative application of increasing mechanical and hydraulic stresses in which the mechanical stress is applied by a contact device with typically opposing contact elements to incrementally open a mouth portion of the fissure while the hydraulic stress is used to then expand the fissure. However, it is also contemplated that the contact device may also be used for expansion and / or propagation of existing fissures that are naturally occurring or initiated by hydraulic fracturing. Fissures created with the devices and methods presented herein will avoid thermal bottlenecks in thermally conductive materials placed within such fissures. Moreover, the wide mouth portion of such fissures will help ensure continuous heat transfer from the thermally conductive materials placed within such fissures to a thermally conductive materials placed within a wellbore from which the fissures originate.

Thermal energy is extracted from geological formations using a heat harvester. In some embodiments, the heat harvester is a once-through, closed loop, underground heat harvester created by directionally drilling through hot rock. The extracted thermal energy can be converted or transformed to other forms of energy.

The invention relates to the technical field of gravity assisted heat pipe monitoring, and discloses a gravity assisted heat pipe-based medium-deep geothermal source heat pump monitoring method, which comprises the following steps of: setting multiple types of monitoring points based on functional partition position information and historical data of a gravity assisted heat pipe; acquiring a corresponding monitoring data set based on each type of monitoring points, and acquiring the monitoring data sets of all the monitoring points to generate a comprehensive monitoring data set D of the current monitoring time node; constructing operation state recognition models based on historical data of the monitoring points, and combining all the operation state recognition models to generate an operation state recognition model library; and combining the comprehensive monitoring data set D of the current monitoring time node and the operation state recognition model library to generate an operation state evaluation value of the geothermal source heat pump of the current monitoring time node. The operation state of the geothermal source heat pump can be comprehensively and accurately monitored, and powerful support is provided for optimized operation and fault diagnosis of the system.

The invention belongs to the technical field of terrestrial heat application, and particularly relates to an underground heat removal device. The underground heat removal device comprises a heat exchange unit used for exchanging heat with geothermal water; the outer oil pipe is arranged at the upper part of the heat exchange unit; the inner oil pipe is arranged in the outer oil pipe, the two ends of a first annular space between the inner oil pipe and the inner oil pipe are sealed, and a vacuumizing opening communicated with the first annular space is formed in the outer oil pipe.

The invention relates to the technical field of natural gas hydrate exploitation, in particular to a natural gas hydrate combined exploitation system and method utilizing geothermal energy. An offshore operation platform is used for receiving natural gas hydrate produced by a depressurization exploitation module; the depressurization mining module obtains natural gas hydrates through a depressurization method; the geothermal energy circulation heating module is located in a vertical shaft of the space below the offshore operation platform and provided with multiple layers of heat collection pipes and heat dissipation pipes, the heat dissipation pipes are arranged in the natural gas hydrate reservoir in the depth direction of the heat reservoir, and the heat collection pipes and the heat dissipation pipes are filled with working liquid. The working liquid absorbs geothermal energy in the heat reservoir through the heat collecting pipe, and the geothermal energy is released into the natural gas hydrate reservoir through the heat dissipating pipe. Geothermal energy is used for heating the natural gas hydrate reservoir, depressurization method-thermal excitation method combined mining is formed, and the mining efficiency is improved.

The invention relates to a well completion structure for strengthening the heat extraction performance of a middle-deep layer closed geothermal single well, a heat extraction unit comprises a well mouth and a heat preservation inner sleeve coaxially arranged below the well mouth, a well cementation unit comprises a low-temperature stratum, a high-temperature stratum and a water-bearing stratum, and the low-temperature stratum is located below the well mouth and coaxially provided with a large sleeve. A water filter pipe and a small sleeve are sequentially and coaxially installed below the large sleeve from outside to inside, the lower end of the water filter pipe penetrates through a high-temperature stratum and a water-bearing layer and is communicated to the bottom of the geothermal well, the lower end of the small sleeve is sealed through a plugging head, and vertical fins are installed on the outer wall, located on the water-bearing layer, of the small sleeve. According to the well completion structure, under the condition that a high-temperature aquifer exists in a stratum, natural convection can be formed at the position close to a shaft, fluid circulating flow in the stratum is enhanced, a heat transfer mode in a closed system close to a well wall is converted into a convection heat transfer mode from a conventional heat conduction mode, and the heat extraction capacity of a middle-deep layer closed single well is effectively improved; and the well completion process is simple, and the economical efficiency is good.

The present application relates to the technical field of cogeneration system optimization, in particular to a heat and electricity decoupling system based on geothermal long-time energy storage and a control method. By constructing a low-temperature underground aquifer energy storage unit (ATES), combined with an electric heat pump unit (EHP) to recover the waste heat of a cogeneration unit (CHP), the CHP is deeply decoupled from heat and electricity through collaborative operation. Through intelligent scheduling strategy, the heat supply ratio is dynamically allocated, the power generation adjustment range of the cogeneration unit (CHP) is improved, the wind power consumption capacity is improved, the wind power curtailment rate is reduced, and it is suitable for centralized heating scenarios with high wind power penetration rate.

The invention discloses multifunctional wellhead equipment for well cluster gathering and transportation and cross-season stratum heat storage. Comprising a heat preservation inner pipe G1, a geothermal circulation water supply pipeline G2, a wellhead equipment main body pipe J2, a geothermal circulation water return pipeline G3, a bypass pipeline G4, a wellhead equipment upper end cover J1, a heat exchange well casing pipe J3, a geothermal circulation water supply pipeline pressure gauge P1 and a geothermal circulation water supply pipeline temperature transmitter T1. The geothermal circulating water supply system comprises a geothermal circulating water return pipeline, a geothermal circulating water return pipeline pressure gauge P2, a geothermal circulating water return pipeline temperature transmitter T2, a heat meter HM, a heat storage small-power circulating water pump WP, a Y-shaped filter V1, an energy valve V2, a geothermal circulating water return pipeline valve V3, a blow-down valve V5, a geothermal circulating water return pipeline control butterfly valve V6, a sight glass V7, a bypass pipeline bypass valve V8, a geothermal circulating water supply pipeline control butterfly valve V9 and a geothermal circulating water supply pipeline. And the heat storage circulating water pump bypasses a control valve V10. Accurate flow transmission and distribution of multiple heat exchange wells, fluid parameter monitoring, water quality observation and flexible sealing of temperature measurement optical fibers can be achieved, and stable change of the fluid flow speed is ensured.

The geothermal well structure comprises the structural fissure strip-shaped heat reservoir, a heat taking well and a recharge well, and the lower end of the heat taking well and the lower end of the recharge well communicate with the structural fissure strip-shaped heat reservoir; the n geothermal wells are arranged along the tectonic inclination side of the tectonic fissure strip-shaped heat reservoir, and the heat extraction wells and the recharge wells are arranged at intervals or the recharge wells are arranged at intervals of two heat extraction wells. The invention provides a feasible technical scheme for efficient development and utilization of geothermal resources for constructing strip-shaped heat storage.