599results about "Geothermal collectors" patented technology

The invention discloses a geothermal development oil shale and CO2 geological storage integrated method, which relates to the field of complex oil and gas reservoir development, and comprises the following steps: designing U-shaped well process parameters, enabling CO2 fluid to flow to a high-temperature geothermal reservoir through a descending section of a U-shaped well, injecting the CO2 fluid into the oil shale reservoir along an ascending section of a shaft after sufficient heat exchange, preheating the oil shale, and storing the CO2 fluid into a high-temperature geothermal reservoir through the descending section of the U-shaped well. Terrestrial heat extraction and utilization are realized; after the temperature of the oil shale layer rises to the target temperature, the oil shale layer is further heated through manual heating, and in-situ conversion development of the oil shale is achieved; after completion, produced CO2 is injected into the oil shale layer again through the U-shaped well, and collaborative development of CO2 geological storage, geothermal extraction and oil shale in-situ conversion is achieved. Geothermal energy is efficiently extracted through CO2 and used for oil shale in-situ pyrolysis, the extra manual heating cost needed by oil shale in-situ conversion is remarkably reduced, and the economic feasibility of a pure storage project and oil shale in-situ conversion development is improved.

The invention relates to a liquid air energy storage and terrestrial heat coordinated underground space air regulation and control system and method. Comprising a first-stage compressor, a second-stage compressor, a third-stage compressor, an expansion refrigerator, a first-stage compression heat exchanger, a second-stage compression heat exchanger, a third-stage compression heat exchanger, a cold box, a separator, a liquid air storage tank, a cryogenic pump, an evaporator, a cold storage circulating pump, a cold storage box, a compression heat exchange circulating pump, a compression heat storage box, a first heater, a second heater and a third heater. The system comprises a first air expander, a second air expander, a third air expander and a generator. The regeneration heater is used for guiding the compression heat generated by the compressor into the regeneration heater for regeneration and / or guiding the geothermal energy output by the geothermal energy output end into the regeneration heater for regeneration; the rotary wheel dehumidification device is used for performing cryogenic drying on the wet air; the fresh air processing unit is composed of a fresh air filter, a regeneration fan, a regeneration filter and an air supply fan.

The invention relates to the technical field of oil-gas field development and geothermal energy utilization. The invention provides an underground high-temperature composite fluid heating system, which comprises a crude oil separation device, a catalysis module, a high-temperature fluid generation module, an injection well pattern module, a target reservoir and a production well, and is characterized in that the crude oil separation device is communicated with the catalysis module through a first gas inlet pipeline and a second gas inlet pipeline; a first gas outlet pipeline and a second gas outlet pipeline are communicated with a high-temperature fluid generation module, the high-temperature fluid generation module is communicated with an injection well pattern module through a third gas outlet pipeline, the injection well pattern module is communicated with a target reservoir, and the target reservoir supplies energy to the outside through a fourth gas outlet pipeline. And the production well conveys the energy-supplied gas to the heat energy recovery device through the first recovery pipeline. In this way, efficient and uniform heating of the underground reservoir is achieved, energy consumption is reduced while the energy recovery efficiency is improved, and the problems of low heat conduction efficiency and high energy consumption in deep oil gas and hot dry rock development are solved.

The invention relates to the technical field of ground source heat pumps, and discloses a ground source heat pump buried pipe zoning layout and cold and heat balance control method which comprises the following steps that the current three-dimensional ground temperature field state of the area where a ground source heat pump buried pipe is located is obtained; predicting a future state sequence of the ground temperature field under different control strategies in a future prediction time domain; solving to obtain an optimal control sequence based on a multi-objective optimization function which aims at minimizing the comprehensive operation cost of the system in the prediction time domain; the multi-objective optimization function at least comprises an energy consumption item representing system short-term operation energy consumption and a balance item representing a ground temperature long-term balance state; and executing the first control action in the optimal control sequence. The prediction model constructed by the invention can combine a physical rule with a data residual continuously learned from actual operation, and ensures that prediction information on which a control decision depends always keeps high fidelity in long-term operation of the system.

The invention relates to the technical field of civil construction engineering, in particular to effective utilization of geothermal resources and improvement of an energy exchange system. According to the energy pile, dynamic regulation and control of stratum heat balance are achieved through the active heat management technology, and the influence of heat accumulation on sustainable utilization of geothermal resources is effectively prevented; a composite heat extraction structure is adopted, and the heat absorption efficiency of geothermal resources is remarkably improved; a high-thermal-conductivity energy pile comprises a fixed base body, and a water circulation assembly is embedded in the fixed base body. The water circulation assembly comprises a water pumping assembly, a circulation pipeline and a water conveying assembly which are communicated with one another; a heat absorption device is arranged on the outer side of the fixed base body and comprises a plurality of heat absorption columns which are vertically distributed; the heat absorption column is provided with a heat conduction head embedded into the fixed base body.

The invention discloses a concentric tube geothermal well structure capable of improving heat exchange efficiency. The concentric tube geothermal well structure comprises a first well opening section and a second well opening section. The first well opening section comprises a first casing pipe, and first well cementation cement is arranged between the inner wall of the first well opening section and the first casing pipe; the second well opening section is provided with a second casing pipe, second well cementation cement and a central casing pipe; a distance is arranged between the second casing pipe and the well wall of the second well opening section, second well cementation cement is arranged between the center casing pipe and the second casing pipe, a water stopping device is arranged at the upper end of the second well cementation cement and is of a reducing structure with the diameter sequentially increased from top to bottom, and the inner wall of the top end of the water stopping device is connected with the center casing pipe. The bottom end of the water stop device is connected with the second sleeve; a packing structure is arranged at the bottom end of the second well cementation cement, and a permeable section is arranged at the lower end of the packing structure. The invention further provides a construction method of the geothermal well structure. The structure is reliable, the heat exchange efficiency is improved, and the industrial long-term operation requirement is met.

The present disclosure is directed to a geothermal desalination system, comprising; a primary liquid circuit circulating a liquid into a geothermal well and returning heated liquid from a well head of the geothermal well, the primary liquid circuit passing through a desalination plant; a first turbine driven by the heated liquid to produce a mechanical output; and an air compressor driven from the mechanical output to provide a first compressed air supply and a second compressed air supply, wherein the first compressed air supply drives a supply pump to supply salt water to the desalination plant, and the second compressed air supply drives a-start-up pump to initiate circulation in the primary liquid circuit.

An inner pipe with a switchable flow channel is arranged in the middle-deep layer buried pipe heat exchanger, and a first opening and a second opening are formed in different depth positions, so that the middle-deep layer buried pipe heat exchanger at least has two operation modes of heat taking and cold taking. The limitation that an existing middle-deep layer buried pipe can only execute one-way heat supply operation is broken through, heat supply and cold supply two-way operation is achieved, the application range of the system is expanded, and the long-term operation stability of the system is improved.

The utility model relates to the technical field of energy conservation and environmental protection, in particular to a solar cross-quarter energy storage and soil source heat pump coupling heating system. The system comprises a solar photo-thermal photovoltaic integrated subsystem, a soil source heat pump coupling heat storage system and a heat user terminal system, the solar photo-thermal photovoltaic integrated subsystem comprises a photo-thermal photovoltaic integrated assembly, a heat exchanger, a storage battery and a circulating pump, and the solar photo-thermal photovoltaic integrated subsystem is used for supplying power to electric equipment of the system and collecting heat; the soil source heat pump coupling heat storage system comprises a soil source heat pump unit, a plate heat exchanger and soil serving as a heat storage medium. And a terminal user maintains proper indoor temperature and required hot water through the heat exchanger. Solar energy and geothermal energy are combined, abundant solar energy is converted into heat energy to be stored in soil in the non-heating season, then the heat energy is taken out through the ground source heat pump for heating in the heating season, renewable energy sources are fully utilized, and the current situation that cold and heat loads are uneven due to long-term operation of the soil is effectively prevented; finally, the purposes of high efficiency, energy conservation and emission reduction are achieved.

The invention discloses an air energy-soil composite heat pump cross-seasonal energy storage and winter combined heating system and an application method, and relates to the technical field of building energy conservation. Comprising the following steps: acquiring quantitative data of heat unbalance; when a heat unbalance phenomenon exists, determining a soil initial temperature and a maximum rising temperature before heat compensation, and calculating a heat compensation amount; determining a heat compensation operation time period and a system type selection of an air source heat pump; determining an initial rising temperature, a heat compensation initial investment and a preset age limit; the operation cost is determined, when the number of times of heat compensation is larger than a preset year limit, the sum of the initial investment of heat compensation and the operation cost within the preset year limit is recorded, and when it is detected that the total soil temperature increasing value is not lower than the maximum temperature increasing value, the air source heat pump system is determined again; and the strategy with the minimum operation cost and the minimum initial heat compensation investment is used as the optimal soil heat compensation strategy. The system obviously improves the utilization rate of renewable energy sources, and has the advantages of high energy efficiency, wide adaptability and low whole life cycle cost.

A modular medium-deep geothermal heat extraction device, comprising a sleeve and a surface circulation assembly connected to the sleeve. The sleeve is inserted into the surface; a bottom pipe, a plurality of heat extraction pipes, and a plurality of thermal insulation pipes are sequentially arranged in the sleeve from the deepest position outward; the bottom pipe, the heat extraction pipes, and the thermal insulation pipes are each composed of outer pipes and inner pipes which are coaxial; after the plurality of outer pipes are fitted, a cold water channel is formed between the inner pipes and the outer pipes; after the plurality of inner pipes are fitted, a hot water channel is formed inside the inner pipes; the cold water channel is communicated with the hot water channel inside the bottom pipe; and the cold water channel and the hot water channel are connected to the surface circulation assembly. The sleeve of the modular medium-deep geothermal heat extraction device uses a modular design, and a plurality of modules are separately transported to a construction site for assembly, so that production and transportation costs can be saved; and according to different stratum conditions, different numbers of modules can be selected for arrangement, so that the application is more flexible.

The present application discloses an oil-geothermal energy co-production system, comprising an oil-geothermal energy production and transportation mechanism and an injection and transportation mechanism. The oil-geothermal energy production and transportation mechanism comprises a negative pressure pipeline, an oil extraction portion is formed on the negative pressure pipeline, and the negative pressure pipeline is used to form negative pressure internally so as to extract oil from the oil extraction portion; and the injection and transportation mechanism comprises a plurality of flow-delivering pipelines, and the plurality of flow-delivering pipelines are evenly arranged around the peripheral side of the negative pressure pipeline and are spaced apart from the negative pressure pipeline, wherein each of the flow-delivering pipelines is provided with jetting portions, which are used for injecting supercritical carbon dioxide into petroleum. In the technical solution of the present application, by providing the jetting portions on each of the flow-delivering pipelines and evenly arranging the plurality of flow-delivering pipelines around the peripheral side of the negative pressure pipeline, supercritical carbon dioxide around the negative pressure pipeline can be distributed in a concentrated mode, thereby enhancing the fluidity of petroleum around the negative pressure pipeline, and thus accelerating the efficiency of petroleum extraction by the negative pressure pipeline.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

The utility model provides a coaxial heat exchange device for medium-deep geothermal energy, and mainly relates to the technical field of geothermal energy development. A coaxial heat exchange device for medium-deep geothermal energy comprises a well pipe, a connecting pipe is fixedly arranged at the top of the well pipe, an outer pipe is fixedly arranged at the top of the connecting pipe, a reducer pipe is fixedly arranged in the outer pipe and close to the top, an inner pipe is fixedly arranged at the bottom of the reducer pipe, a circulating pipe is arranged in the inner pipe, and the circulating pipe penetrates through the outer pipe and the reducer pipe. Spiral blades are arranged on the outer ring of the circulating pipe in an array mode. The utility model has the beneficial effects that the coaxial heat exchange technology is adopted, geothermal water does not need to be extracted, tail water does not need to be recharged, the ground is prevented from settling, and the damage to the geological environment is small; and all the spiral fins are driven to rotate through flowing heat exchange, so that the disturbance effect is achieved, uniform heating is guaranteed, and the heat exchange effect is improved.

The invention discloses a reinforced soil bridge abutment system in a frozen soil area and a construction method of the reinforced soil bridge abutment system. The reinforced soil bridge abutment system comprises a reinforced soil bridge abutment body, a ground source heat pump regulation and control system, a clean energy power supply system and a monitoring system. The reinforced soil bridge abutment body comprises filling soil, rib materials and a prefabricated modular wall face, a buried circulating pipe group of the ground source heat pump regulation and control system deeply penetrates through a frozen soil layer to a stable soil layer, and a heat pump host transfers heat of a bridge abutment base in a high-temperature season to prevent frozen soil from melting by means of a double-circulation pipeline and depending on temperature sensor data and weather forecast data. And reversely supplementing heat in low-temperature seasons to inhibit frost heaving. The heat pump host and the monitoring system of the clean energy power supply system supply power in a time-sharing manner to guarantee core functions. The monitoring system comprises a temperature sensor, a strain gauge and an inclinometer. The problems of stability and frost heaving and thaw collapse of the abutment in the frozen soil area are effectively solved, and economic and social benefits are achieved.

The invention relates to the technical field of geothermal resources, in particular to a same-well heat exchange device and method for a middle-deep layer geothermal well. Comprising a geothermal well body, and a recharge well and an annular disc are installed on the outer wall and the inner wall of the geothermal well body respectively. According to the device, underground water can be filtered through the filter cylinder and the sieve holes when the submersible pump pumps the underground water, meanwhile, a movable block can move circumferentially through a motor, and the movable block moves circumferentially to eject impurities clamped in the sieve holes in different positions through the elasticity of a round block, a sliding block, an extrusion spring, an arc-shaped trapezoidal block, an extrusion block and a rubber column; meanwhile, the outer surfaces of the screen holes can be scraped and cleaned through a scraping plate when a movable block moves circumferentially, then impurities scraped by the scraping plate can be blocked and cleaned through a cleaning plate, a torsional spring and a fixed pipe, the subsequent reuse scraping effect is improved, and therefore the screen holes can be continuously cleaned; and the influence on subsequent heat exchange operation caused by reduction of water flow speed due to blockage or accumulation of impurities on sieve pores is avoided.

The invention belongs to the technical field of efficient mining of closed mine terrestrial heat, and particularly relates to an efficient mining device and method for closed mine terrestrial heat, the efficient mining device comprises an inner pipe, an outer pipe is arranged outside the inner pipe, the outer wall of the outer pipe is fixedly connected with a high-temperature-resistant lining layer, and the outer wall of the high-temperature-resistant lining layer is fixedly connected with an efficient heat preservation layer; the outer wall of the efficient heat preservation layer is fixedly connected with a protective outer layer. The inner pipe adopts a spiral shape and covers the fins, the outer pipe constructs a multi-layer protection system, and the inner pipe and the outer pipe cooperate to lay a foundation for efficient heat exchange and energy transmission. The inner pipe is made of aluminum bronze, heat of geothermal fluid can be rapidly absorbed by means of the high heat conductivity coefficient of 35-50 W / (m.K) of the inner pipe, the fluid flowing path is ingeniously prolonged by means of the spiral structure design, the fluid turbulence degree is enhanced in cooperation with fins, the heat exchange area is remarkably increased, and the heat exchange efficiency is improved by 30% or above compared with a traditional straight pipe structure.

The present application relates to the technical field of geotechnical slope engineering, and particularly discloses a slope anti-seismic anchor rod based on heat exchange self-circulation technology and a construction method thereof.The heat exchange self-circulation system arranged in the anchor rod ensures that the temperature of the frozen soil is maintained in a relatively stable range, so that the problem of soil freeze-thaw damage caused by temperature change can be solved.The anti-seismic system in the anchor rod improves the continuous supporting capacity of the anchor rod, the anchor rod can provide the required anchoring force for the supporting system, effectively improves the slope anti-sliding resistance, increases the safety factor of the slope stability, and ensures the safety and stability of the slope.Through the arrangement of the anti-seismic system, the anchor rod can continuously provide supporting bearing capacity, which is of great significance to the supporting engineering in earthquake areas.The arrangement of the data monitoring system can monitor some field data of the slope in real time, so as to facilitate the subsequent maintenance and improvement work.

The invention relates to a middle-deep layer geothermal energy buried pipe and a heat exchange system, and belongs to the field of middle-deep layer geothermal energy heat exchange. The medium-deep layer geothermal energy buried pipe and heat exchange system comprises a plurality of U-shaped pipe units, each U-shaped pipe unit comprises two plastic pipe bodies and an elbow used for connecting the two plastic pipe bodies, a hot melt adhesive layer is integrally connected to the inner wall of each plastic pipe body, and a spiral metal spiral piece is embedded in the inner wall of each hot melt adhesive layer. The existing medium-deep geothermal energy buried pipe and heat exchange system are optimized and improved, especially the internal structure of the buried pipe is optimized, so that the heat exchange efficiency of the buried pipe is further improved, and the buried pipe is particularly suitable for medium-deep geothermal energy; the larger the inner diameter of the buried pipe is, the better the heat exchange effect is, and therefore the utilization rate of medium-deep layer geothermal energy is further increased. The heat exchange efficiency of the heat exchange system is higher, the heat exchange system is particularly suitable for medium-deep layer geothermal heat exchange, and the deeper the geothermal well is, the larger the heat exchange effect difference is.

The invention discloses a multi-energy complementary heat supply method and system combining terrestrial heat and thermoelectric decoupling, relates to the field of energy heat supply, and aims to solve the problems that a traditional heat supply system is high in fossil fuel dependence degree, insufficient in terrestrial heat and thermoelectric cooperation and low in operation benefit. The method comprises the following steps: acquiring terrestrial heat, system operation and external associated data, and generating a standardized state matrix through weighted normalization and feature fusion; lSTM time sequence features and real-time parameters are fused to construct a demand prediction model, and a geothermal flow deviation adaptive correction item is added; with minimum fossil fuel consumption, lowest cost and emission standard reaching as targets, scheduling parameters are output through a particle swarm algorithm in combination with constraint conditions; the parameters are converted into instructions, and when the deviation exceeds 3%, correction and feedback are carried out through PID and a cost sensitive formula; calculating index evaluation benefits; and dynamically adjusting the weights of the three types of data according to the index deviation degree. According to the invention, deep synergy of terrestrial heat and thermoelectricity is realized, fossil fuel consumption and cost are reduced, and dynamic adaptive capability is provided.

The invention relates to the field of abandoned oil well transformation application, in particular to a device and method for conducting solar phase change energy storage through an abandoned oil well. According to the technical scheme, a water inlet of a heat storage water tank is connected to a water outlet of a first water pump through a pipeline and a first three-way valve, and a first water pump pipeline is connected with a high-temperature water outlet of a solar heat collection system; a water return port of the solar heat collection system is connected to a user water return pipeline at the heat storage water tank through a second three-way valve; the waste oil well adopted by the invention not only utilizes the geothermal energy of the waste oil well, but also serves as an energy storage container of solar energy, and the heat exchange device adopts a layered variable-pitch spiral tube heat exchanger to adapt to the change of ground temperature and water temperature at different depths; the phase change materials filled in the waste oil well are distributed in a multi-melting-point gradient mode according to changes of ground temperature and water temperature, the problem of large-scale long-time efficient energy storage of solar energy can be solved, the effect of supplementing stratum heat is achieved, and the heat exchange efficiency of the waste oil well serving as an energy storage well can be improved.

The invention discloses a U-shaped mid-deep buried pipe heat pump system optimization design method, which comprises the following steps: carrying out a thermal response test to obtain rock-soil body thermophysical parameters, predicting the dynamic heat extraction amount of a buried pipe, carrying out heat exchange coupling simulation to obtain and predict the dynamic temperature distribution of a buried pipe heat pump system, and determining the capacity of a heat pump machine. Designing and building a buried pipe heat pump system according to buried pipe system parameters and the heat pump capacity, operating the buried pipe heat pump system to obtain operating data of the buried pipe heat pump system, and fitting to obtain a heat pump performance function; and a flow optimization objective function is constructed according to the building heat load in the to-be-optimized period and the outlet water temperature of the buried pipe, the buried pipe heat pump system is optimized to obtain an optimal flow parameter, and the buried pipe heat pump system is adjusted according to the optimal flow parameter. According to the method, the energy consumption of the ground source side circulating pump can be remarkably reduced, and a theoretical foundation is laid for large-scale application of a U-shaped middle-deep layer buried pipe heat pump system.

The utility model discloses a ground source heat pump soil structure and a photo-thermal complementary system with the ground source heat pump, the ground source heat pump soil structure comprises a buried pipe, the buried pipe comprises a pipe well, a U-shaped heat exchange medium flow channel is arranged in the pipe well, and a water-containing compact lime layer is arranged between the pipe well and the U-shaped heat exchange medium flow channel; a covering top layer and a gradual change ground source heat storage structure are arranged outside the buried pipe, and the covering top layer is arranged on the upper side of the gradual change ground source heat storage structure. The gradient ground source heat storage structure sequentially comprises a compact sand layer soil doping layer, a compact rock layer soil doping layer and an original soil layer from inside to outside. The gradient ground source heat storage structure is arranged outside the buried pipe, so that a heat exchange gradient is formed, and the heat exchange and heat storage effects are improved to the maximum extent.

A first heat exchanger (1) is provided with a heat exchanger body (11) that forms a first heat medium flow path (10) through which heat medium (M) flows. Similarly, a second heat exchanger (2) is provided with a heat exchanger body (21) that forms a second heat medium flow path (20) through which the heat medium (M) flows. The heat exchanger bodies (11, 21) are buried in the ground. The heat exchanger body (11) is configured from an aluminum-alloy extruded material. The heat exchanger body (21) is configured from an aluminum-alloy sheet metal material.

A testing apparatus and an associated method for assessing the performance and integrity of a ground source heat exchanger installation are provided. The testing apparatus is configured to form a fluid tight, pressure resistant connection with the pipework of a ground source heat exchanger so as to create a test system. Fluid can then be pumped through the test system as the flow rate and / or fluid pressure are measured. By collecting this data about the fluid before and after it passes through the pipework the testing apparatus enables an operator to identify differences in the upstream and downstream values that may be indicative of a fault in the pipework. Preferably, fluid is circulated through the pipework in a first flow direction and then a second flow direction and measurements collected for both are compared to provide further detail of possible faults in the pipework.

Systems and techniques may be used for incorporating direct air carbon dioxide capture capabilities into a working fluid condensing process of a geothermal power plant. An example technique may include causing, using fans, air to flow across condenser coils of a condensing unit, through which power cycle working fluid is circulated, and through a direct air capture (DAC) filtration component, which separates carbon from the air, capturing heat from a geothermal working fluid, and using the heat as thermal energy input to the DAC filtration component or using electrical energy generated from the geothermal power plant as electrical energy input to power the condensing unit and the DAC filtration component. The example technique may include gathering the carbon separated from the air to be injected into a geothermal reservoir or repurposed for another industrial process.

The invention relates to the technical field of geothermal tail water treatment and resource utilization, in particular to an anti-blocking geothermal tail water recharge device which comprises a geothermal production well, a recharge wellhead and a recharge main pipeline and is integrated with a heat energy recovery mechanism, a fracturing perforation mechanism and a rainstorm emergency mechanism. The heat energy recovery mechanism achieves efficient recovery of waste heat through the synergistic effect of a heat exchanger and a phase change material heat storage tank and converts the waste heat into available energy. The fracturing perforation mechanism can be used for forming small holes in the rock-soil surface so as to enhance the permeability; the rainstorm emergency mechanism can effectively cope with the sudden rainfall situation, and water resource waste is avoided. The effects of improving the geothermal tail water heat utilization rate, optimizing the reservoir characteristics and improving the overall system stability are achieved, and meanwhile the environment-friendly water resource management target is achieved.

The invention discloses a buried snorkeling type cultivation tank heat preservation mechanism and a heat preservation method, and relates to the technical field of agricultural cultivation. The buried snorkeling type cultivation tank heat preservation mechanism comprises a buoy and a heat preservation cavity with an opening in the top, the heat preservation cavity is fixedly arranged underground, and the heat preservation cavity is externally connected with a water supplementing device through a circulation pipeline; a set amount of water is introduced into the heat preservation cavity; the buoy is movably arranged in the heat preservation cavity, a cultivation groove is fixedly formed in the top of the buoy, and the buoy can suspend in water in the heat preservation cavity. According to the buried snorkeling type cultivation tank heat preservation mechanism and method, the appropriate temperature needed by crop growth can be maintained, and the heat preservation effect is good.

A geothermally powered iron production subsystem includes using heat transfer fluid heated by a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A hopper receives iron ore that is crushed and provided to a blast furnace, along with limestone and coke. The blast furnace is heated by a heat exchanger configured to receive the heat transfer fluid heated by the geothermal system to generate the heat provided to the blast furnace. One or more components of the iron production subsystem may also be powered by the heated heat transfer fluid.

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.