WO2017003239A1 - Tuyau isolant de puits géothermique, ensemble tuyau de puits géothermique, système d'échange de chaleur de puits géothermique et procédé de construction associé - Google Patents

Tuyau isolant de puits géothermique, ensemble tuyau de puits géothermique, système d'échange de chaleur de puits géothermique et procédé de construction associé Download PDF

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Publication number
WO2017003239A1
WO2017003239A1 PCT/KR2016/007079 KR2016007079W WO2017003239A1 WO 2017003239 A1 WO2017003239 A1 WO 2017003239A1 KR 2016007079 W KR2016007079 W KR 2016007079W WO 2017003239 A1 WO2017003239 A1 WO 2017003239A1
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Prior art keywords
pipe
heat
geothermal
geothermal well
well
Prior art date
Application number
PCT/KR2016/007079
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English (en)
Korean (ko)
Inventor
김영원
김호성
양동욱
김귀택
Original Assignee
한국생산기술연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020150093291A external-priority patent/KR101822081B1/ko
Priority claimed from KR1020150093297A external-priority patent/KR101714709B1/ko
Priority claimed from KR1020150093284A external-priority patent/KR101636741B1/ko
Priority claimed from KR1020150093301A external-priority patent/KR101714712B1/ko
Priority claimed from KR1020150093306A external-priority patent/KR101795583B1/ko
Application filed by 한국생산기술연구원 filed Critical 한국생산기술연구원
Priority to CN201680038498.8A priority Critical patent/CN108027174A/zh
Publication of WO2017003239A1 publication Critical patent/WO2017003239A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • F24T10/17—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using tubes closed at one end, i.e. return-type tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/30—Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Definitions

  • the present invention relates to a geothermal well-insulated pipe, geothermal well pipe assembly, geothermal well heat exchange system and its construction method, and more particularly, to improve the efficiency of the system for recovering geothermal heat by circulating a heat transfer medium inside the geothermal well.
  • the present invention relates to a passion thermal insulation pipe, a geothermal well pipe assembly, a geothermal well heat exchange system and a construction method thereof.
  • Geothermal heat the heat retained inside the ground, is the heat source due to the convection of mantle inside the earth or the collapse of radioactive material in the earth's crust or the magma of volcanic regions.
  • geothermal energy In order to use this geothermal energy source, geothermal energy is used in more than 80 countries around the world, and geothermal utilization is classified as follows.
  • geothermal geothermal technology which is a technology that drills around 32 ⁇ 200m in depth and heats and heats using a heat pump.
  • it drills a small diameter of 300 ⁇ 500 m and circulates underground water directly and heat pump
  • Geothermal geothermal technology used in the third method which is used in the Hassan area, is a technology that drills more than 1000m in small diameter and directly draws hot water of 200 °C or more from the underground to the ground, and the fourth core has a long depth of 600m to 5,000m.
  • deep geothermal technology which is a technology that draws only heat to the ground and directly heats and generates geothermal heat without a heat pump.
  • the present invention corresponds to the last fourth technology mentioned above, which drills geothermal wells, inserts pipes or underground heat exchangers into the geothermal wells, and heat transfer medium flows along the geothermal wells so that heat of underground high temperature is lost to the ground. It is a technology for manufacturing large diameter deep geothermal ground heat exchanger with long depth / high efficiency which enables production without
  • the present invention is a non-volcanic zone, such as our country, rock is a very suitable technology for the granite zone is a technology that can accelerate the domestic geothermal industry and create a new geothermal energy business in the future development success.
  • one or more pipes are inserted into the geothermal well to partition the space inside the geothermal well, and heat transfer medium is injected into the well to supply geothermal heat through some of the compartments, and the geothermal well is recovered to the ground through other compartments. It is a structure using heat energy.
  • the heat transfer occurs largely due to the large temperature difference between the production well and the injection well at the upper part.
  • the temperature of the production wells may drop, reducing the production capacity of hot water.
  • the pipe inserted into the geothermal well is subjected to the pressure of the ground itself and the heat transfer medium flowing inside and outside the pipe, and is exposed to various temperature environments depending on the depth of the geothermal well. Deformation may occur, and furthermore, there is a problem that the pipe is broken.
  • the pipe inserted into the geothermal well is mainly connected to a plurality of pipes to insert the extended pipe assembly into the geothermal well.
  • geothermal heat that can be recovered inside the geothermal well has a problem that is limited by the area of the geothermal well and the flow rate of the heat transfer medium circulating in the geothermal well.
  • the inner surface of the geothermal hole may collapse during the flow of the heat transfer medium, in this case, the flow path of the heat transfer medium is blocked by the collapsed ground geothermal hole There is a problem that can be lost.
  • the technical problem of the present invention is to solve the problems mentioned in the background art, geothermal well insulation pipe, geothermal well pipe assembly and geothermal well to improve the efficiency of the system for recovering geothermal heat by circulating the heat transfer medium inside the geothermal well It is to provide a passion heat exchange system and its construction method.
  • the geothermal well-insulated pipe according to the present invention is inserted into the geothermal well is a pipe formed so that the heat transfer medium flows along the geothermal well, extending from the ground to the bottom of the geothermal well It is formed to a relatively small diameter compared to the geothermal well, the outer portion disposed spaced apart from the inner surface of the geothermal well, a length corresponding to the length of the outer portion and a relatively small diameter compared to the outer portion,
  • An inner tube part spaced apart from an inner surface of the outer part and at least one heat insulating material may include a heat insulating part provided in a space between the outer part and the inner tube part.
  • the geothermal well-insulated pipe may be formed with a heat resistance above the geothermal well-insulated pipe upper than the heat resistance of the geothermal well-insulated pipe lower.
  • the heat insulating part may have a thickness of the upper part of the heat insulating part relatively larger than the thickness of the lower part of the heat insulating part.
  • the heat transfer part may have a relatively low heat transfer rate of the upper heat insulating material of the heat insulating part than the heat transfer rate of the heat insulating material of the heat insulating lower part.
  • a plurality of pipes formed with different heat transfer rates of the heat insulating part may be connected in the longitudinal direction.
  • the geothermal well-insulated pipe according to the present invention is a pipe which is inserted into the geothermal well is formed so that the heat transfer medium flows along the geothermal well, the pipe portion and the outer tube and the inner tube spaced apart from each other, the inner peripheral surface of the outer And at least a portion of the inner tube in contact with an outer circumferential surface thereof, the plurality of supporting parts being spaced at predetermined intervals along the longitudinal direction of the pipe part, and the insulating part provided with an insulating material in a space between the outer tube and the inner tube. It may include.
  • the support portion may be formed to have a relatively small area compared to the space between the outer tube and the outer tube in the longitudinal section of the pipe.
  • the geothermal well-insulated pipe according to the present invention is inserted into the geothermal well in the pipe is formed so that the heat transfer medium flows along the geothermal well, the outer and inner pipes are spaced apart from each other, the pipe portion, the inner peripheral surface of the exterior And at least a portion of the inner tube in contact with the outer circumferential surface of the inner tube, the support portion extending along the longitudinal direction of the pipe portion, and a heat insulating portion provided with a heat insulating material in a space between the outer tube and the inner tube.
  • the support may be formed with a hole communicating with each other the space between the outer tube and the inner compartment partitioned by the support.
  • the geothermal well pipe assembly according to the present invention is inserted into the geothermal well in the pipe assembly is formed so that the heat transfer medium flows along the geothermal well, the first fastening portion is formed at one end, the first fastening at the other end
  • a plurality of unit pipe modules having a second coupling portion coupled to the first coupling portion in a form corresponding to the portion, and surrounding portions where the first coupling portion and the second coupling portion of each of the unit pipe modules adjacent to each other are coupled; It may include a connection ring module provided to.
  • the unit pipe module is formed of a double tube including an outer tube and an inner tube, a space between the outer tube and the inner tube is provided with a heat insulating material, the first fastening portion and the second fastening portion is formed on both ends of the inner tube Can be.
  • connection ring module may be formed to surround the appearance of the unit pipe module.
  • geothermal well heat exchange system geothermal well formed by excavating the ground, the pipe extending from the ground to the bottom of the geothermal well, the inner space of the geothermal well is spaced apart from the inner peripheral surface of the geothermal well and the pipe
  • the heat storage material may be provided in a space between the geothermal well and the pipe, and may include a heat storage portion through which a heat transfer medium for geothermal heat recovery is passed.
  • the heat storage unit may be provided with a heat storage material of a porous form, the heat transfer medium may be transmitted through the pores of the heat storage unit.
  • the heat storage portion may be formed by coupling a plurality of heat storage material in a form protruding to the outer peripheral surface of the pipe.
  • the heat storage material may be formed in a shape having a predetermined area on the upper surface of the heat storage material.
  • geothermal well heat exchange system construction method excavating the ground to form a geothermal well by excavating the ground to a predetermined diameter, into the inside of the geothermal well formed in the excavation step, including the heat insulation to the bottom of the geothermal well It may include an inserting step of extending and inserting the pipe and the filling step of filling the heat storage material in the space between the inner peripheral surface of the geothermal well and the pipe.
  • geothermal well heat exchange system geothermal well formed by excavating the ground, extends from the ground to the bottom of the geothermal well, the inside of the geothermal well is disposed outside the inner peripheral surface of the geothermal well spaced apart from each other
  • the inner pipe is formed to a length corresponding to the outer pipe, the inner pipe is spaced apart from the inner peripheral surface of the outer pipe and the heat storage material is provided in the space between the geothermal well and the outer pipe, It may include a heat storage for the heat transfer medium for the passage.
  • the heat storage unit may be formed by providing a plurality of heat storage materials having a predetermined volume in the space between the geothermal well and the outer pipe.
  • the geothermal well heat exchange system construction method excavating the ground to form a geothermal well by excavating the ground to a predetermined diameter, the inner pipe and the inner pipe to the lower portion of the geothermal well formed in the excavation step and It may include an insertion step of extending and inserting the porous outer pipe and the filling step of filling the heat storage material in the space between the inner peripheral surface of the geothermal well and the outer pipe.
  • geothermal well heat insulating pipe geothermal well pipe assembly, geothermal well heat exchange system and construction method thereof according to the present invention, the following effects can be obtained.
  • the geothermal heat recovery efficiency can be improved by lowering the heat transfer rate between the inside and the outside of the pipe inserted into the geothermal well.
  • turbulence may occur in the heat transfer medium flowing inside the geothermal well to improve heat recovery efficiency.
  • the geothermal recovery efficiency can be improved by increasing the area where the heat transfer medium receives heat from inside the geothermal well.
  • FIG. 1 is a view showing the configuration of a geothermal heat insulating pipe 1-1 embodiment according to the present invention.
  • FIGS. 2 and 3 are diagrams showing a first modification of the geothermal heat insulating pipe 1-1 embodiment according to the present invention.
  • FIG. 4 is a view showing a state in which the flow velocity inside the production well is changed in the first modification of the geothermal heat insulating pipe 1-1 embodiment according to the present invention.
  • FIG 5 is a view showing a state in which the flow velocity inside the injection well is changed in the first modification of the geothermal well-insulated pipe 1-1 embodiment according to the present invention.
  • FIGS. 6 and 7 are diagrams showing a second modification of the geothermal heat insulating pipe 1-1 embodiment according to the present invention.
  • FIG. 8 is a view showing the configuration of the geothermal heat insulating pipe 1-2 embodiment according to the present invention.
  • FIG. 9 is a view showing a first modification of the geothermal heat insulating pipe 1-2 embodiment according to the present invention.
  • FIG. 10 is a view showing a second modification of the geothermal heat insulating pipe 1-2 of the present invention.
  • FIG. 11 is a view showing the configuration of an embodiment of a geothermal heat insulating pipe second embodiment according to the present invention.
  • FIG. 12 is a view showing the configuration of the pipe portion and the support portion of the embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention.
  • FIG. 13 is a view showing a state of forming a heat insulating part in an embodiment of a geothermal heat insulating pipe according to the second embodiment of the present invention.
  • FIG 14 is a view showing a state in which the supporting portion is provided at both ends of the pipe portion in one embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention.
  • FIG. 15 is a view illustrating a state in which a first fastening part and a second fastening part are formed in a supporting part in an embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention.
  • 17 is a view showing the configuration of a geothermal well pipe assembly first embodiment according to the present invention.
  • FIG. 18 is a view showing a state in which a stopper is provided in the first embodiment of the geothermal well pipe assembly according to the present invention.
  • 19 is a view showing a modification of the stopper of the geothermal well pipe assembly first embodiment according to the present invention.
  • 20 is a view showing a state in which the third fastening portion and the fourth fastening portion are provided in the first embodiment of the geothermal well pipe assembly according to the present invention.
  • 21 is a view showing a first modified example of the geothermal well pipe assembly first embodiment according to the present invention.
  • FIG. 22 is a view showing a second modification of the geothermal well pipe assembly first embodiment according to the present invention.
  • FIG. 23 is a view showing the configuration of a geothermal well pipe assembly second embodiment according to the present invention.
  • FIG. 24 is a view showing a state in which a stopper is provided in the second embodiment of the geothermal well pipe assembly according to the present invention.
  • 25 is a view showing a state in which the third fastening portion and the fourth fastening portion are provided in the second embodiment of the geothermal well pipe assembly according to the present invention.
  • 26 is a view showing the configuration of a geothermal well pipe assembly third embodiment according to the present invention.
  • FIG. 27 is a view showing a state in which a stopper is provided in the third embodiment of the geothermal well pipe assembly according to the present invention.
  • FIG. 28 is a view showing a state in which the third fastening portion and the fourth fastening portion are provided in the third embodiment of the geothermal well pipe assembly according to the present invention.
  • 29 is a view showing a state in which the injection hole is provided in the third embodiment of the geothermal well pipe assembly according to the present invention.
  • FIG. 30 is a view showing the configuration of a geothermal well pipe assembly third embodiment of the present invention.
  • 31 is a view showing the configuration of the first-first embodiment of the geothermal heat exchange system according to the present invention.
  • FIG. 32 is a view showing a modification of the geothermal heat exchanger system embodiment 1-1 according to the present invention.
  • Example 33 is a diagram showing the configuration of Example 1-2 of the geothermal heat exchange system according to the present invention.
  • 35 is a view showing the first modified example of the geothermal heat exchange system 1-3 according to the present invention.
  • FIG. 36 is a view showing a second modified example of the geothermal heat exchange system according to the first embodiment of the present invention.
  • FIG. 37 is a view showing the configuration of Embodiments 1-4 of the geothermal heat exchange system according to the present invention.
  • Embodiment 1-1 of the geothermal heat exchange system construction method according to the present invention is a view showing Embodiment 1-1 of the geothermal heat exchange system construction method according to the present invention.
  • 39 is a view showing the embodiment 1-2 of the geothermal heat exchange system construction method according to the present invention.
  • Example 40 is a cross-sectional view showing the construction of Example 2-1 of the geothermal heat exchange system according to the present invention.
  • Fig. 41 is a plan view showing the construction of Example 2-1 of the geothermal heat exchange system according to the present invention.
  • FIG. 42 is a view showing a modification of the geothermal heat exchange system 2-1 embodiment according to the present invention.
  • Example 43 is a view showing the configuration of Example 2-2 of the geothermal heat exchange system according to the present invention.
  • Example 44 is a view showing the configuration of Example 2-3 of the geothermal heat exchange system according to the present invention.
  • FIG. 46 is a view showing a second modification of the geothermal heat exchange system according to the second embodiment of the present invention.
  • Fig. 47 is a view showing the construction of Example 2-4 of the geothermal well heat exchange system according to the present invention.
  • Embodiment 48 is a view showing Embodiment 2-1 of the geothermal heat exchange system construction method according to the present invention.
  • Embodiment 49 is a view showing Embodiment 2-2 of the geothermal heat exchange system construction method according to the present invention.
  • FIG. 1 is a view showing the configuration of the geothermal heat insulating pipe 1-1 embodiment according to the present invention
  • Figures 2 and 3 show a first modified example of the geothermal heat insulating pipe 1-1 embodiment according to the present invention
  • 4 is a view showing a state in which the flow velocity inside the production well is changed in the first modification of the geothermal heat insulating pipe 1-1 embodiment according to the present invention
  • Figure 5 is a geothermal heat insulating pipe according to the present invention It is a figure which shows the state in which the flow velocity inside an injection well changes in the 1st modified example of the pipe 1-1 Example.
  • FIGS. 6 and 7 are diagrams showing a second modification of the geothermal heat insulating pipe 1-1 embodiment according to the present invention.
  • the geothermal heat insulating pipe may include an exterior portion a100, an inner tube portion a200, and a thermal insulation portion a300.
  • the exterior portion a100 is inserted into the geothermal well, and may be formed in the shape of a pipe having a relatively small diameter compared to the length and geothermal well extending from the ground to the bottom of the geothermal well.
  • the outside of the geothermal well heat insulating pipe according to the present invention can be configured to be an injection well in which the heat transfer medium is injected into the geothermal well.
  • the configuration of the exterior portion a100 may be advantageously formed of a material having a sufficient strength to maintain the shape of the pipe and to withstand the pressure inside the ground and the pressure of the flowing heat transfer medium.
  • the inner tube portion a200 may be formed in the form of a pipe having a relatively small diameter compared to the length and the outer portion (a100) corresponding to the length of the outer portion (a100) described above.
  • the configuration of the inner tube portion a200 may also be advantageously formed of a material having a sufficient strength to maintain the shape of the pipe and to withstand the pressure inside the ground and the pressure of the flowing heat transfer medium.
  • the configuration of the exterior portion (a100) and the inner tube portion (a200) described above are mutually coupled through a heat insulating portion (a300) or a separate connection member (not shown), which will be described later, may be configured in one piece, or selectively removable. It may be configured to assemble in place to install the geothermal heat insulating pipe according to the invention.
  • the shape and configuration may be various without limitation.
  • the heat insulating portion (a300) is a configuration in which at least one heat insulating material is provided in the space between the above-described outer portion (a100) and the inner tube portion (a200), the outer portion (a100) and inner tube portion (a200) described above. It may be a configuration that serves to lower the heat exchange efficiency generated between).
  • the heat insulating part (a300) is formed in a form filled with a foamable heat insulating material such as urethane foam, foam rubber, in this case, the foamed heat insulating material on one side of the outer portion (a100) the outer portion (a100) and the inner tube portion It may be advantageous to form an injection hole that can be injected into the space between the (a200).
  • a foamable heat insulating material such as urethane foam, foam rubber
  • the foamed insulating material injected through the injection hole expands and flows along the space between the exterior portion a100 and the inner tube portion a200 to be filled between the exterior portion a100 and the inner tube portion a200.
  • the configuration of the heat insulating part a300 is not limited to the above-described embodiment, and various materials and configurations may be used, such as various heat insulating materials such as air, styrofoam, and glass fiber.
  • the heat insulating part a300 is filled and fixed in the space between the exterior part a100 and the inner tube part a200, or in a form corresponding to the shape of the space between the exterior part a100 and the inner tube part a200. It may be processed and selectively detachably formed.
  • the heat insulating portion (a300) is provided between the outer portion (a100) and the inner tube portion (a200) if provided to reduce the heat transfer efficiency of the inside and outside of the geothermal heat insulating pipe according to the present invention, its shape and configuration Is not limited and may vary.
  • Geothermal well-insulated pipe according to the present invention including all the above-described configuration is inserted into the geothermal well formed in the ground, the heat transfer medium injected into the geothermal well can form a flow path that can be circulated along the geothermal well have.
  • a heat transfer medium is injected between the outer side of the geothermal well-insulated pipe according to the present invention and the inner surface of the geothermal well, and the heat transfer medium flows into the geothermal well-insulated pipe according to the present invention from the bottom of the geothermal well.
  • the geothermal heat insulating pipe according to the invention it is possible to recover the heat transfer medium to the ground.
  • a separate pump may be provided inside or on the ground of the geothermal heat insulating pipe according to the present invention.
  • the heat transfer medium injected into the geothermal well is heated by receiving geothermal heat through the inner surface of the geothermal well, and the heated heat transfer medium may be recovered through the geothermal well-insulated pipe according to the present invention.
  • the temperature difference between the outside and the inside of the geothermal well-insulated pipe according to the present invention can be very large.
  • the lower portion of the geothermal well is similar to the temperature of the heat transfer medium in which all of the injected heat transfer medium is recovered in a heated state, the temperature difference between the outside and the inside of the geothermal heat insulation pipe according to the present invention can be relatively small.
  • the first modification of the geothermal heat insulating pipe 1-1 embodiment according to the present invention may include an outer portion (a100), the inner tube portion (a200) and the heat insulating portion (a300). Can be.
  • the exterior portion a100, the inner tube portion a200, and the thermal insulation portion a300 are basically the same as the configuration of the exterior portion a100, the inner tube portion a200, and the thermal insulation portion a300 of the first-first embodiment described above. The detailed description of the same configuration will be omitted.
  • the exterior part a100 may have a diameter L1-a of the upper part of the exterior part a100 relatively larger than the diameter L1-b of the lower part of the exterior part a100.
  • the inner tube portion a200 may have a diameter L2-a of the upper portion of the inner tube portion a200 relatively smaller than the diameter L2-b of the lower portion of the inner tube portion a200.
  • the distance between the outer portion (a100) and the inner tube portion (a200) as described above becomes larger, the outer portion (a100) and inner tube portion (a200)
  • the thickness of the heat insulating part (a300) provided in the space between the can be thickened.
  • the two configurations may be applied together, or only one configuration may be applied, such that the thickness of the heat insulation portion a300 at the upper portion is relatively lower than the lower portion. If configured to form thick, the form and configuration may be varied without limitation.
  • the exterior portion a100 and the inner tube portion a200 may be formed in an inclined shape, or may be formed in a stepped manner as illustrated in FIG. 3. .
  • the configuration of the present modification described above can reduce the amount of insulation required to reduce the unnecessary heat insulation performance, it is possible to obtain the effect of reducing the cost required for the production of geothermal heat insulation pipe according to the present invention.
  • the width of the flow path through which the heat transfer medium flows inside the geothermal well becomes wider toward the bottom of the geothermal well, which is wider when the heat transfer medium flows at the same pressure. As a result, the heat transfer medium can slow down.
  • the flow rate of the heat transfer medium recovered through the production well is faster toward the top of the production well, it is possible to reduce the amount of heat exchange between the inside and outside of the geothermal well-insulated pipe according to the present invention.
  • the flow rate of the heat transfer medium injected through the injection well is slowed toward the bottom of the injection well, so that the time for receiving geothermal heat from the bottom of the geothermal well may be longer.
  • the efficiency of the underground heat exchanger using the geothermal heat insulation pipe according to the present invention can be obtained.
  • the second modified example of the geothermal heat insulating pipe 1-1 embodiment according to the present invention is the outer portion (a100), inner tube portion (a200) and the thermal insulation portion (a300) It may include.
  • the exterior portion a100 and the inner tube portion a200 are basically the same as those of the exterior portion a100 and the inner tube portion a200 of the first-first embodiment described above, and thus detailed description thereof will be omitted.
  • the heat insulating part a300 may be formed of a plurality of types of heat insulating materials a310, a320, and a330 having different heat insulating performances.
  • the heat insulating parts a310, a320, and a330 may be configured by applying different heat insulating materials to a part requiring high heat insulating performance and a part requiring relatively low heat insulating performance.
  • Insulation performance of each part may be advantageously configured such that the upper portion has a relatively higher thermal insulation performance than the lower portion as in the first modification of the first-first embodiment described above.
  • the heat transfer rate of the upper heat insulating material a310 of the heat insulating part may be configured to be relatively low compared to the heat transfer rate of the lower heat insulating material a330 of the heat insulating part.
  • This configuration can obtain the effect of more efficiently concentrating the thermal insulation performance, it is also possible to obtain the effect of reducing the cost required to configure the thermal insulation (a310, a320, a330).
  • Geothermal heat insulation pipe according to the present modification can be configured by injecting different insulation material for each position in a single pipe.
  • the portion of the geothermal heat insulating pipe according to the present modification is inserted into the bottom end side of the geothermal well may not be provided with a heat insulating portion (a300).
  • a separate heat insulation portion a300 may not be provided in the space between the outer portion a100 and the inner tube portion a200, and as in the present modification, the pipe formed in the form of a double tube may have a single tube structure. Deformed, it may be formed so that the heat insulating portion (a300) is not provided.
  • the lower end of the geothermal heat insulating pipe according to the present invention may be advantageously composed of a single pipe is not provided with a heat insulating material.
  • such a configuration can also efficiently concentrate the thermal insulation performance, it is possible to obtain the effect of reducing the cost required for the configuration of the thermal insulation (a300).
  • a plurality of pipes having different heat transfer rates of the heat insulating parts a310, a320, and a330 may be connected in the longitudinal direction.
  • This configuration can obtain the effect of ensuring the convenience, such as transport and installation of the geothermal heat insulating pipe according to the present invention.
  • the configuration of connecting the plurality of pipes can also be applied to the first modification of the above-described first-first embodiment and the first-first embodiment.
  • the geothermal well-insulated pipe according to the present invention can be formed with a relatively large heat resistance of the geothermal well-insulated pipe upper than the heat resistance of the geothermal well-insulated pipe.
  • the heat transfer rate is a kind of flow, and the combination of the thermal conductivity, the thickness of the material and the cross-sectional area is called the resistance to this flow. Since the temperature is the driving function for the heat flow, the heat flow is different from the difference of the thermal potential. It can be said to be proportional and inversely proportional to thermal resistance.
  • the heat flow becomes inversely small, and the upper portion of the geothermal heat insulating pipe according to the present invention may have less heat flow than the lower portion.
  • FIG. 8 is a view showing the configuration of the geothermal heat insulating pipe 1-2 embodiment according to the present invention
  • Figure 9 is a view showing a first modified example of the geothermal heat insulating pipe 1-2 embodiment according to the present invention
  • 10 is a view showing a second modified example of the geothermal heat insulating pipe 1-2 embodiment according to the present invention.
  • the geothermal heat insulating pipe according to the present invention may include a heat insulating pipe part a400.
  • the insulation pipe part a400 is inserted into the geothermal well, and may be formed in the shape of a pipe having a relatively smaller diameter than the length and geothermal well extending from the ground to the bottom of the geothermal well.
  • the outside of the geothermal well heat insulating pipe according to the present invention can be configured to be an injection well in which the heat transfer medium is injected into the geothermal well.
  • the heat insulation pipe part a400 may be formed of a heat insulation material having a low heat transfer rate, and may serve to reduce the amount of heat exchange generated between the inside and the outside of the heat insulation pipe part a400.
  • the insulation pipe portion a400 has a low heat transfer rate, so as to prevent heat exchange between the insulation pipe portion a400 and the outside, and to have a strength that can withstand a predetermined pressure. It can vary.
  • the geothermal well-insulated pipe according to the present invention including the above-described configuration may be inserted into the geothermal well formed in the ground, and may form a flow path through which the heat transfer medium injected into the geothermal well may circulate along the geothermal well. .
  • a heat transfer medium is injected between the outer side of the geothermal well-insulated pipe according to the present invention and the inner surface of the geothermal well, and the heat transfer medium flows into the geothermal well-insulated pipe according to the present invention from the bottom of the geothermal well.
  • the geothermal heat insulating pipe according to the invention it is possible to recover the heat transfer medium to the ground.
  • a separate pump may be provided inside or on the ground of the geothermal heat insulating pipe according to the present invention.
  • the heat transfer medium injected into the geothermal well is heated by receiving geothermal heat through the inner surface of the geothermal well, and the heated heat transfer medium may be recovered through the geothermal well-insulated pipe according to the present invention.
  • the temperature difference between the outside and the inside of the geothermal well-insulated pipe according to the present invention can be very large.
  • the lower portion of the geothermal well is similar to the temperature of the heat transfer medium in which all of the injected heat transfer medium is recovered in a heated state, the temperature difference between the outside and the inside of the geothermal heat insulation pipe according to the present invention can be relatively small.
  • the first modified example of the geothermal heat insulating pipe 1-2 according to the present invention may include a heat insulating pipe part a400.
  • the heat insulation pipe part a400 is basically the same as the structure of the heat insulation pipe part a400 of the above-described second embodiment, and detailed description thereof will be omitted.
  • the thickness L3-a of the upper portion of the insulation pipe part a400 may be formed to be relatively larger than the thickness L3-b of the lower portion of the insulation pipe part a400.
  • the thickness of the heat insulating pipe portion (a400) is thicker toward the top, it may be configured to have a thicker heat insulating layer on the top.
  • the insulation pipe portion a400 may have various shapes and configurations without being limited, provided that the thickness at the top is configured to be relatively thicker than the bottom.
  • the configuration of the present modification can reduce the amount of heat insulating material required by reducing unnecessary heat insulating performance, it is possible to obtain the effect of reducing the cost required for the production of geothermal heat insulating pipe according to the present invention.
  • the width of the flow path through which the heat transfer medium flows inside the geothermal well becomes wider toward the bottom of the geothermal well, which is wider when the heat transfer medium flows at the same pressure. As a result, the heat transfer medium can slow down.
  • the second modification of the geothermal heat insulating pipes 1-2 embodiment according to the present invention may include a heat insulating pipe (a410, a420, a430).
  • the heat insulation pipe parts a410, a420, and a430 may be formed of a plurality of types of heat insulation materials having different heat insulation performances.
  • the heat insulating pipe parts a410, a420, and a430 may be configured by applying different heat insulating materials to a part requiring high heat insulating performance and a part requiring relatively low heat insulating performance.
  • Insulation performance of each part may be advantageously configured such that the upper portion has a relatively higher thermal insulation performance than the lower portion, as in the first modification of the above-described embodiment 1-2.
  • the heat transfer rate of the upper heat insulating pipe part a410 of the heat insulating part may be configured to be relatively low compared to the heat transfer rate of the lower heat insulating pipe part a430 of the heat insulating part.
  • Such a configuration can obtain the effect of more efficiently concentrating the thermal insulation performance, and can also reduce the cost of constructing the thermal insulation pipe parts (a410, a420, a430).
  • the geothermal heat insulating pipe according to the present modification may be configured by selectively connecting a plurality of heat insulating pipe parts (a410, a420, a430) formed of heat insulating materials having different heat transfer rates in a longitudinal direction.
  • This configuration can obtain the effect of ensuring the convenience, such as transport and installation of the geothermal heat insulating pipe according to the present invention.
  • the geothermal well-insulated pipe according to the present invention can be formed relatively larger than the heat resistance of the geothermal well-insulated pipe upper heat resistance.
  • the heat transfer rate is a kind of flow, and the combination of the thermal conductivity, the thickness of the material and the cross-sectional area is called the resistance to this flow. Since the temperature is the driving function for the heat flow, the heat flow is different from the difference of the thermal potential. It can be said to be proportional and inversely proportional to thermal resistance.
  • the heat flow becomes inversely small, and the upper portion of the geothermal heat insulating pipe according to the present invention may have less heat flow than the lower portion.
  • FIG 11 is a view showing the configuration of an embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention
  • Figure 12 is a configuration of the pipe portion and the support portion of one embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention It is a figure which shows.
  • FIG. 13 is a view showing a state of forming a heat insulating part in one embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention
  • Figure 14 is a view of a second embodiment of the geothermal heat insulating pipe according to the present invention
  • FIG. 15 is a view illustrating a state in which the support part is provided at both ends of the pipe part
  • FIG. 15 is a view illustrating a state in which the first fastening part and the second fastening part are formed in the supporting part in one embodiment of the geothermal heat insulating pipe according to the second embodiment of the present invention. .
  • the geothermal heat insulating pipe according to the present invention may include a pipe part b100, a support part b200, and a heat insulating part b300.
  • the pipe part b100 is inserted into the geothermal well, and partitions the inner space of the geothermal well and injects a heat transfer medium between the outer circumferential surface of the pipe portion b100 and the inner circumferential surface of the geothermal well, and is heated at the bottom of the geothermal well.
  • the heat transfer medium may be recovered to the ground through the inside of the pipe part b100.
  • the pipe part b100 may be formed in a shape in which the exterior b110 and the inner tube b120 are spaced apart from each other.
  • the exterior b110 may be formed in the shape of a pipe having a smaller diameter than the length and the geothermal well extending from the ground to the bottom of the geothermal well.
  • the inner tube (b120) may be formed in the form of a pipe having a relatively small diameter compared to the length and the appearance (b110) corresponding to the length of the above-described appearance (b110).
  • the configuration of the pipe part b100 may be advantageously formed of a material that maintains the shape of the pipe and has sufficient strength to withstand the pressure inside the ground and the pressure of the heat transfer medium.
  • the support portion (b200) is configured to support the external appearance (b110) and the inner tube (b120) by connecting to each other, is formed so that at least a portion of the inner circumferential surface of the outer appearance (b110) and the outer circumferential surface of the inner tube (b120) contact, It may be provided in plurality to be spaced apart at a predetermined interval along the longitudinal direction of the portion (b100).
  • the support part b200 has a ring shape having a predetermined thickness with an area corresponding to the exterior b110 and the inner tube b120 on a longitudinal cross section of the pipe part b100. It can be configured as.
  • the configuration of the support part b200 is provided between the exterior b110 and the inner tube b120 of the pipe part b100 so as to maintain and maintain a gap between the exterior b110 and the inner tube b120. Is not limited and may vary.
  • the heat insulation portion (b300) is a configuration for reducing the efficiency of heat exchange between the inside and the outside of the pipe portion (b100), may be formed with a heat insulating material in the space between the exterior (b110) and the inner tube (b120). .
  • the geothermal well-insulated pipe according to the present invention is inserted into the geothermal well, a heat transfer medium for recovering geothermal heat is injected through the outside of the pipe is heated through geothermal heat at the bottom of the geothermal well, the heated heat transfer medium is It can be recovered to the ground through the interior.
  • a foamable insulating material such as urethane foam, foam rubber, etc.
  • foamable insulating material such as urethane foam, foam rubber, etc.
  • materials such as air, styrofoam, glass fiber is applied, and the like and materials may be varied without limitation. have.
  • the geothermal heat insulating pipe according to the present invention can obtain the effect of preventing deformation and breakage by structurally reinforcing the pipe while ensuring heat insulation inside and inside the pipe.
  • the support portion b200 may be advantageously formed of a material having a relatively low thermal conductivity compared to the pipe portion b100 in order to reduce the efficiency of the heat exchange between the exterior (b110) and the inner tube (b120) through the support (b200). .
  • the heat insulating part b300 is provided, but since the support part b200 is in contact with both the exterior b110 and the inner tube b120 of the pipe part b100. Heat may be transferred through the support part b200 to reduce adiabatic performance.
  • the support part b200 may be advantageous to form with a material having a relatively low thermal conductivity so as to perform the same function as the heat insulation part b300 of the support part b200.
  • the geothermal well heat insulating pipe according to the present invention can secure more improved heat insulating performance, and can obtain an effect of improving the efficiency of the geothermal heat recovery system to which the geothermal heat insulating heat pipe according to the present invention is applied.
  • the support portion b200 of the geothermal heat insulating pipe according to the present invention may be formed to have a relatively small area compared to the space between the outer surface (b110) and the inner tube (b120) in the longitudinal cross-section of the pipe portion (b100). .
  • the structure of the support part b200 may be formed so as not to completely close the space between the exterior b110 and the inner tube b120.
  • the support part b200 may have a through hole b210 formed to penetrate the support part b200 in the longitudinal direction of the pipe part b100.
  • the configuration of the through hole b210 is not limited to the present exemplary embodiment, and the support part b200 may be formed in a shape in which the surface contacting the exterior b110 and the inner tube b120 is partially recessed.
  • one side of the pipe part b100 includes a heat insulating material constituting the above-described heat insulating part b300 in a space between the exterior b110 and the inner tube b120 of the pipe part b100.
  • An injection hole b112 for injecting may be formed.
  • the pipe part b100 and the support part b200 are combined in the process of manufacturing the geothermal heat insulating pipe according to the present invention, and through the injection hole b112 formed in the appearance b110 of the pipe part b100.
  • the insulating material may be injected to form a heat insulating part b300 in a space between the exterior b110 and the inner tube b120.
  • the heat insulating material injected into the pipe part b100 moves along the longitudinal direction of the pipe part b100 and comes into contact with the support part b200.
  • the insulation material is moved and the insulation material can be filled in the entire pipe part b100.
  • the geothermal heat insulating pipe according to the present invention can more easily form a heat insulating layer inside the pipe, thereby reducing the time and effort required to manufacture the geothermal heat insulating pipe according to the present invention. You can get it.
  • the support portion (b200) of the geothermal heat insulating pipe according to the present invention may be provided at both ends of the longitudinal direction of the pipe portion (b100), as shown in FIG.
  • both ends in the longitudinal direction may be formed in an open shape, and the heat insulating part is disposed in the space between the exterior b110 and the inner pipe b120.
  • (b300) it may be advantageous to close both ends of the pipe portion (b100).
  • the structure of the support part b200 may be provided at both ends of the longitudinal direction of the pipe part b100 to close both open ends of the pipe part b100 through the support part b200.
  • the support part b200 does not have a through hole b210 for the heat insulating material to pass therethrough, and a support part b200 having a through hole b210 is additionally provided between both ends of the pipe part b100. May be
  • the geothermal well-insulated pipe according to the present invention can close both ends by using the configuration of the support part (b200) without processing the pipe separately, so that the geothermal well-insulated pipe can be easily produced. You can get it.
  • the pipe inserted into the geothermal well is difficult to form a single pipe to reach the bottom of the geothermal well, it may be advantageous to be formed so as to interconnect a plurality of unit pipes to extend their length.
  • the geothermal heat insulating pipe according to the present invention, at least both ends of the pipe part b100 are provided with support parts b200, and the support parts b200 provided at both ends of the pipe part b100 are as shown in FIG. 15.
  • the first fastening part b220 and the second fastening part b230 may be formed.
  • a first fastening part b220 is formed at the support part b200 provided at one end of the pipe part b100, and a first fastening part b220 is provided at the support part b200 provided at the other end of the pipe part b100.
  • the second fastening part b230 having a shape corresponding to the shape may be formed.
  • first fastening part b220 and the second fastening part b230 are formed in the form of a male screw and a female screw, and may be configured so that a plurality of geothermal heat insulating pipes according to the present invention rotate and couple with each other.
  • Such a configuration is not limited to the present embodiment, and the shape and configuration may be various without being limited if a plurality of geothermal heat insulating pipes are provided to be coupled through the configuration of the support part b200.
  • first fastening part b220 and the second fastening part b230 are processed to the support part b200, which can be easily processed, and then coupled to the pipe part b100, a plurality of geothermal heat insulating pipes may be used. The process of machining the pipes separately may not be necessary to connect them.
  • the support portion (b200) of the geothermal heat insulating pipe according to the present invention may be formed of an elastic material.
  • Such a configuration may have the effect of actively responding when the geothermal well-insulated pipe according to the present invention is deformed by various temperatures and pressures.
  • the geothermal well-insulated pipe according to the present invention by all the above-described configuration, by reinforcing the pipe structure is inserted into the geothermal well can prevent the pipe from being damaged or deformed, the heat transfer medium circulates inside the geothermal well At this time, the thermal conductivity can be improved by lowering the thermal conductivity between the inside and the outside of the pipe inserted into the geothermal well.
  • FIG. 16 is a figure which shows the structure of the modification of the geothermal heat insulating pipe 2nd Example which concerns on this invention.
  • the geothermal heat insulating pipe may include a pipe part b400, a support part b500, and a heat insulating part b600.
  • the configuration of the pipe portion b400 and the heat insulation portion b600 is the same as the configuration of the pipe portion b100 and the heat insulation portion b300 of the above-described embodiment, a detailed description thereof will be omitted.
  • the support part b500 may be in contact with at least a portion of the inner circumferential surface of the pipe portion b400 and the outer circumferential surface of the inner tube b420, and may be formed long along the longitudinal direction of the pipe portion b400. have.
  • the plurality of support parts b500 may divide the space between the exterior b410 and the inner tube b420 of the pipe part b400 in the longitudinal direction of the pipe part b400.
  • the plurality of support parts b500 may be advantageously provided radially with respect to the center of the pipe part b400 on the cross section in the longitudinal direction of the pipe part b400.
  • the plurality of support parts b500 may be advantageously provided to be spaced apart from each other at the same interval.
  • the above-described heat insulating part b600 may be provided in a space between the exterior b410 and the inner tube b420 of the pipe part b400 partitioned as described above.
  • the modified example of the geothermal well-insulated pipe according to the present invention can obtain the effect of preventing deformation and breakage by structurally reinforcing the pipe while ensuring the heat insulation inside and inside the pipe as in the above-described embodiment. have.
  • the support portion b500 may be formed with a hole b510 communicating with each other the space between the exterior (b410) and the inner tube (b420) partitioned by the support (b500).
  • the geothermal heat insulating pipe according to the present invention can more easily form a heat insulating layer inside the pipe, thereby reducing the time and effort required to manufacture the geothermal heat insulating pipe according to the present invention. You can get it.
  • the support part b500 may be formed in a spiral shape based on the center of the pipe part b400 along the longitudinal direction of the pipe part b400.
  • 17 is a view showing the configuration of the geothermal well pipe assembly first embodiment according to the present invention.
  • FIG. 18 is a view showing a state in which a stopper is provided in the first embodiment of the geothermal well pipe assembly according to the present invention
  • FIG. 19 is a view showing a modification of the stopper of the first embodiment of the geothermal well pipe assembly according to the present invention
  • 20 is a view showing a state in which the third fastening portion and the fourth fastening portion are provided in the first embodiment of the geothermal heat pipe assembly according to the present invention.
  • FIG. 21 is a view showing a first modified example of the geothermal well pipe assembly according to the first embodiment of the present invention
  • FIG. 22 is a view showing a second modified example of the geothermal well pipe assembly according to the first embodiment of the present invention.
  • the first embodiment of the geothermal well pipe assembly according to the present invention may include a unit pipe module c100 and a connection ring module c200.
  • the unit pipe module c100 may be formed in a double tube shape including an inner tube c110 and an exterior c120, and may include an insulation material c130 provided in a space between the inner tube c110 and the exterior c120. .
  • Such a configuration may be a configuration for lowering the heat transfer efficiency between the heat transfer medium injected into the geothermal well and the heat transfer medium heated and recovered inside the geothermal well when the geothermal well pipe assembly according to the present invention is inserted into the geothermal well. have.
  • Such a configuration can obtain the effect of improving the efficiency of the geothermal heat recovery system using geothermal well pipe assembly.
  • the unit pipe module c100 has a first fastening part c112 formed at one end thereof and the other end thereof corresponding to the first fastening part c112 like the unit pipe module c400 of the second embodiment described above.
  • a second fastening part c114 coupled to the first fastening part c112 is formed, and a plurality of fastening parts c112 may be provided.
  • the plurality of unit pipe modules (c100) are connected to each other through the coupling of the first fastening portion (112) and the second fastening portion (c114) of each of the adjacent unit pipe module (c100), unit pipe module (c100)
  • the length can be increased in the longitudinal direction of.
  • each of the first fastening part c112 and the second fastening part c114 may be separately provided with each fastening part formed to be connected to each other, and may be formed to be welded to ends of different inner tubes c110.
  • first fastening part c112 and the second fastening part c114 may be formed in the form of a male screw and a female screw, respectively, so that adjacent unit pipe modules c100 rotate and are coupled to each other.
  • first fastening part c112 and the second fastening part c114 may be inserted into a space between the inner tube c110 and the outer part c120 to be fixed to the end of the unit pipe module c100. have.
  • the first fastening portion (c112) and the second fastening portion (c114) is inserted into the inside of the unit pipe module (c100) may be formed so that the diameter of the end is relatively small for easy insertion, interference fit method It may be fixed by, or may be fixed through a separate welding.
  • This configuration can also obtain the effect of preventing the insulating material (c130) provided between the inner tube (c110) and the outer (c120) from both ends of the unit pipe module (c100).
  • the configuration of the first fastening portion (c112) and the second fastening portion (c114) is not limited to the present embodiment, the position and the coupling method provided with the first fastening portion (c112) and the second fastening portion (c114) It can vary.
  • connection ring module (c200) is formed with a relatively larger diameter than the above-described unit pipe module (c100), it may be provided so as to surround the adjacent unit pipe module (c100) connected to each other.
  • connection ring module (c200) is coupled together in the process of connecting the adjacent unit pipe module (c100), the first coupling portion (112) and the second coupling portion (c114) of each of the unit pipe module (c100) connection ring It may be coupled inside the module c200.
  • connection ring module (c200) may be advantageously formed to be the same as the outer diameter of the outer pipe (c120) of the unit pipe module (c100), it may be advantageous to have a predetermined width in the longitudinal direction.
  • This configuration can obtain an effect that can more strongly support the coupling portion of the unit pipe module (c100).
  • a space is formed between the connection portion of the unit pipe module (c100) and the connection ring module (c200), the heat insulating material (c300) may be provided inside the space.
  • the unit pipe module c100 since the unit pipe module c100 includes a double pipe structure and a heat insulating material in order to reduce heat exchange between the inside and the outside, the inside of the outside and the outside of the connection portion of the unit pipe module c100 through the above-described configuration. The effect of reducing heat exchange can be obtained.
  • the configuration of the insulating material (c300) is to assemble the pre-processed insulating material (c300) or to inject a foamed insulating material to correspond to the shape of the space between the connection portion of the unit pipe module (c100) and the connection ring module (c200). Etc.
  • the material and configuration thereof may be various without limitation.
  • an injection hole c260 may be formed on one side of the connection ring module c200 to inject the insulating material c300 into a portion of the connection ring module c200.
  • the insulating material c300 may be easily injected into the space between the connection portion of the unit pipe module c100 and the connection ring module c200 through the injection hole c260.
  • the first embodiment of the geothermal well pipe assembly according to the present invention is provided with a stopper (c140) for fixing the position of the connection ring module (c200) to the unit pipe module (c100) Can be.
  • the stopper (c140) may be formed to protrude on the appearance of the unit pipe module (c100).
  • the stopper (c140) is provided to be spaced apart from the distance corresponding to the length of the connection ring module (c200) in the longitudinal direction centering on the connecting portion of the interconnected unit pipe module (c100), unit pipe module (c100)
  • a portion of the outer surface of the may be formed in a protruding shape.
  • the configuration of the stopper (c140) is not limited to the present embodiment, and may be variously applied, such as a form in which a separate fixing member is coupled to the fixing pin.
  • connection ring module (c200) is accurately positioned at the connection portion of the unit pipe module (c100) and does not move, thereby improving the performance of reinforcing the connection portion.
  • the first embodiment of the geothermal well pipe assembly according to the present invention may include a stopper (c140) of the modified form.
  • the stopper c140 may be formed such that both ends thereof include an inclined surface connecting the outer surface of the stopper c140 and the outer side of the unit pipe module c100.
  • stopper (c140) and the connection ring module (c200) protruding on the outer surface of the unit pipe module (c100) may not form a surface facing the longitudinal direction of the geothermal well pipe according to the present invention.
  • the heat transfer medium flowing along the outer surface of the geothermal well pipe according to the present invention may obtain an effect of reducing the resistance received by the stopper c140 and the connection ring module c200.
  • third coupling parts c150 are formed at both ends of the unit pipe module c100, and the connection ring module c200 is provided. At both ends of the fourth coupling part c250 coupled to the third coupling part c150 described above may be formed.
  • the third fastening part c150 may be formed on the outer circumferential surface of the unit pipe module c100.
  • the third fastening part c150 is spaced apart in the longitudinal direction with respect to the connection parts of the mutually connected unit pipe modules c100, and has a thickness of the connection ring module c200 coupled with the unit pipe module c100.
  • the third fastening part (c150) spaced apart from each other may be formed to partially overlap the connection ring module (c500).
  • the fourth fastening part c250 is formed in the form of a female screw corresponding to the third fastening part c150 described above at both ends of the connection ring module c200, and the third fastening part c150 and the third through rotation.
  • Four fastening parts c250 may be coupled to each other.
  • the unit pipe module c100 and the connection ring module c200 are also coupled to each other to more effectively reinforce the connection portion of the unit pipe module c100. Can be.
  • first fastening portion (c112), the second fastening portion (c114), the third fastening portion (c150) and the fourth fastening portion (c250) are all formed in the form of a screw, all the screws having the same pitch It may be advantageous to form it.
  • each unit pipe module (c100) and the connection ring module (c200) is rotated
  • the degree of mutual coupling may proceed the same.
  • the configuration of the third fastening portion (c150) and the fourth fastening portion (c250) is also not limited to the present embodiment, if the unit pipe module (c100) and the coupling ring module (c200) provided to be coupled to each other and the shape and The configuration can vary.
  • the first embodiment of the geothermal heat pipe assembly according to the present invention including the above-described configuration is connected to the plurality of unit pipe module (c100), at the same time more robust to the connection of the unit pipe module (c100),
  • the heat transfer medium flowing inside and outside the geothermal well pipe according to the present invention can obtain a sealing effect to prevent the communication between the plurality of unit pipe module (c100) to communicate with each other.
  • the first modification of the geothermal well pipe assembly according to the first embodiment of the present invention may include a unit pipe module (c100) and a coupling ring module (c200).
  • connection ring module (c200) is formed to surround a portion where the inner pipe (c110) of each unit pipe module (c100) is connected, the outer surface of the connection ring module (c200) of the appearance (c120) It may be formed at the same height as the outer surface.
  • connection ring module c200 may be formed to be the same as the outer diameter of the appearance c120.
  • connection ring module (c200) may be advantageously formed of a heat insulating material in order to block the heat exchange between the geothermal well pipe assembly according to the present invention and the outside.
  • connection ring module (c200) This configuration reinforces the connection part of the geothermal well pipe assembly according to the present invention and at the same time the protrusion by the connection ring module (c200) disappears, the pipe in the process of inserting the geothermal well pipe assembly according to the present invention into the geothermal well This can prevent the phenomenon.
  • the second modified example of the geothermal well pipe assembly according to the first embodiment of the present invention may include a unit pipe module (c100) and a connection ring module (c200).
  • connection ring module c200 may have an empty space formed therein, and an insulation material c300 may be provided therein.
  • This configuration can be obtained to reinforce the connection portion of the geothermal well pipe assembly according to the present invention and at the same time increase the insulation performance.
  • connection ring module c200 since the protrusion by the connection ring module c200 disappears, the phenomenon in which the pipe is caught in the process of inserting the geothermal well pipe assembly according to the present invention into the geothermal well can be prevented.
  • FIG. 23 is a view showing the configuration of a geothermal well pipe assembly according to a second embodiment of the present invention
  • Figure 24 is a view showing a state in which a stopper is provided in a second embodiment of the geothermal well pipe assembly according to the present invention
  • 25 is a view showing a state in which the third fastening portion and the fourth fastening portion are provided in the second embodiment of the geothermal well pipe assembly according to the present invention.
  • the geothermal well pipe assembly may include a unit pipe module c400 and a connection ring module c500.
  • the unit pipe module (c400) is a pipe structure that is inserted into the geothermal well, the first fastening portion (c410) is formed at one end, the second fastening portion (c420) is formed at the other end, a plurality of Can be.
  • the first fastening part c410 and the second fastening part c420 may be formed to correspond to each other, and may be coupled to each other to connect adjacent unit pipe modules c400 to each other.
  • the plurality of unit pipe modules (c400) are connected to each other through the coupling of the first fastening portion (c410) and the second fastening portion (c420) of each of the adjacent unit pipe module (c400), unit pipe module (c400)
  • the length can be increased in the longitudinal direction of.
  • the first fastening part c410 and the second fastening part c420 are formed in the form of a male screw and a female screw, respectively, so that adjacent unit pipe modules c400 are rotated and coupled to each other, but are connected to each other. If the adjacent unit pipe module (c400) is provided to be coupled to each other the shape and configuration may be various without limitation.
  • connection ring module (c500) is formed with a relatively larger diameter than the above-described unit pipe module (c400), it may be provided so as to surround the adjacent unit pipe module (c400) connected to each other.
  • connection ring module (c500) is coupled together in the process of connecting the adjacent unit pipe module (c400), the first coupling portion (c410) and the second coupling portion (c420) of each of the unit pipe module (c400) connection ring It may be coupled inside the module (c500).
  • connection ring module (c500) may be advantageously formed to be the same as the outer diameter of the unit pipe module (c400), it may be advantageous to have a predetermined width in the longitudinal direction.
  • This configuration can obtain an effect that can more strongly support the coupling portion of the unit pipe module (c400).
  • the second embodiment of the geothermal well pipe assembly according to the present invention is provided with a stopper (c430) for fixing the position of the connection ring module (c500) to the unit pipe module (c400) Can be.
  • the stopper (c430) is provided spaced apart from the distance corresponding to the length of the connection ring module (c500) in the longitudinal direction centered on the connecting portion of the interconnected unit pipe module (c400), unit pipe module (c400) A portion of the outer surface of the may be formed in a protruding shape.
  • the configuration of the stopper (c430) is not limited to this embodiment, it can be applied in a variety of forms, such as a separate fixing member is coupled, such as a fixing pin.
  • connection ring module (c500) is accurately positioned at the connection portion of the unit pipe module (c400) and does not move, thereby improving the performance of reinforcing the connection portion.
  • third coupling parts c440 are formed at both ends of the unit pipe module c400, and the connection ring module c500 is provided. At both ends of the fourth fastening part c540 coupled to the third fastening part c440 described above may be formed.
  • the third fastening part c440 is spaced apart in the longitudinal direction with respect to the connection parts of the mutually connected unit pipe modules c400, and has a thickness of the connection ring module c500 coupled with the unit pipe module c400.
  • the third fastening part c440 spaced apart from each other may be formed to partially overlap the connection ring module c500.
  • the fourth fastening part c540 is formed in a female screw shape corresponding to the third fastening part c440 described above at both ends of the connection ring module c500, and the third fastening part c440 and the third fastening part are rotated.
  • Four fastening portions c540 may be coupled to each other.
  • first fastening portion (c410), the second fastening portion (c420), the third fastening portion (c440) and the fourth fastening portion (c540) are all formed in the form of a screw, all the screws having the same pitch It may be advantageous to form it.
  • each unit pipe module (c400) and the connection ring module (c500) is rotated
  • the degree of mutual coupling may proceed the same.
  • the configuration of the third fastening portion (c440) and the fourth fastening portion (c540) is also not limited to this embodiment, the shape and if provided to couple the unit pipe module (c400) and the connection ring module (c500) The configuration can vary.
  • 26 is a view showing the configuration of a geothermal well pipe assembly third embodiment according to the present invention.
  • Figure 27 is a view showing a stopper is provided in a third embodiment of the geothermal well pipe assembly according to the present invention
  • Figure 28 is a third fastening portion in a third embodiment of the geothermal well pipe assembly according to the present invention
  • a fourth fastening part is a view showing a state in which an injection hole is provided in a third embodiment of a geothermal well pipe assembly according to the present invention.
  • FIG. 30 is a diagram showing a configuration of a third embodiment of the geothermal well pipe assembly according to the present invention.
  • the third embodiment of the geothermal well pipe assembly according to the present invention may include a unit pipe module c600 and a connection ring module c700.
  • the unit pipe module c600 may be formed in a double tube shape including an inner tube c610 and an outer tube c620, and may include an insulation material c630 provided in a space between the inner tube c610 and the outer tube c620. .
  • Such a configuration may be a configuration for lowering the heat transfer efficiency between the heat transfer medium injected into the geothermal well and the heat transfer medium heated and recovered inside the geothermal well when the geothermal well pipe assembly according to the present invention is inserted into the geothermal well. have.
  • Such a configuration can obtain the effect of improving the efficiency of the geothermal heat recovery system using geothermal well pipe assembly.
  • the unit pipe module c600 has a first fastening portion c612 formed at one end thereof and the other end thereof corresponding to the first fastening portion c612 like the unit pipe module c400 of the second embodiment described above.
  • a second fastening part c614 coupled to the first fastening part c612 is formed, and a plurality of fastening parts c612 may be provided.
  • the plurality of unit pipe modules (c600) are connected to each other through the coupling of the first fastening portion (c612) and the second fastening portion (c614) of each of the adjacent unit pipe module (c600), unit pipe module (c600)
  • the length can be increased in the longitudinal direction of.
  • first fastening part c612 and the second fastening part c614 are formed at both ends of the inner tube c610, and are formed in the form of male and female screws, respectively, so that the adjacent unit pipe module c600 rotates. And may be configured to be coupled to each other.
  • Such a configuration can obtain the effect of maintaining the constant width of the heat transfer medium flowing in the unit pipe module (c600) by maintaining a constant width inside the unit pipe module (c600) to be connected.
  • the configuration of the first fastening portion (c612) and the second fastening portion (c614) is not limited to the present embodiment, the position and coupling method is provided with the first fastening portion (c612) and the second fastening portion (c614) It can vary.
  • connection ring module (c700) has a similar configuration to the connection ring module (c500) of the second embodiment, a detailed description thereof will be omitted.
  • connection ring module (c700) may be formed with a diameter surrounding the appearance (c620) of the unit pipe module (c600).
  • This configuration can obtain an effect that can more strongly support the coupling portion of the unit pipe module (c600).
  • a space is formed between the connection portion of the unit pipe module (c600) and the connection ring module (c700), the heat insulating material (c800) may be provided inside the space.
  • the unit pipe module (c600) since the unit pipe module (c600) includes a double pipe structure and a heat insulating material in order to reduce heat exchange between the inside and the outside, the inside of the outside and the connecting portion of the unit pipe module (c600) through the above-described configuration. The effect of reducing heat exchange can be obtained.
  • the configuration of the insulating material (c800) is to assemble a pre-processed insulating material (c800) or inject a foamed insulating material to correspond to the shape of the space between the connection portion of the unit pipe module (c600) and the connection ring module (c700). Etc.
  • the material and configuration thereof may be various without limitation.
  • the third embodiment of the geothermal well pipe assembly according to the present invention is provided with a stopper (c640) for fixing the position of the connection ring module (c700) to the unit pipe module (c600) Can be.
  • the stopper c640 may be formed to protrude on the exterior of the unit pipe module c600.
  • stopper c640 Since the structure of the stopper c640 is the same as that of the stopper c430 of the second embodiment, detailed description thereof will be omitted.
  • connection ring module (c700) is accurately positioned at the connection portion of the unit pipe module (c600) and does not move, thereby improving the performance of reinforcing the connection portion.
  • third coupling parts c650 are formed at both ends of the unit pipe module c600, and the connection ring module c700 is provided. At both ends of the fourth fastening part c750 coupled to the third fastening part c650 described above may be formed.
  • the third fastening part c650 may be formed on the outer circumferential surface of the unit pipe module c600.
  • first fastening portion c612 the second fastening portion c614, the third fastening portion c650, and the fourth fastening portion c750 are all formed in a screw shape, as in the above-described second embodiment, It may be advantageous to form all of the threads having the same pitch.
  • each unit pipe module (c600) and the connection ring module (c700) is rotated
  • the degree of mutual coupling may proceed the same.
  • connection ring module (c700) of the third embodiment of the geothermal well pipe assembly according to the present invention is a heat insulating material (c800) to the inside of the portion surrounding the connection ring module (c700) on one side
  • An injection hole c760 may be formed to inject.
  • the insulating material c800 may be easily injected into the space between the connection portion of the unit pipe module c600 and the connection ring module c700 through the injection hole c760.
  • the modified example of the geothermal pipe assembly according to the third embodiment of the present invention according to the present invention may include a unit pipe module (c600) and the connection ring module (c700).
  • the unit pipe module c600 since the unit pipe module c600 has the same configuration as the unit pipe module c600 of the third embodiment, detailed description thereof will be omitted.
  • connection ring module c700 of the present modification may be formed to directly contact the connection part of the unit pipe module c600 and surround the connection part.
  • connection ring module (c700) is formed to have a length corresponding to the length of the connection portion protruding from the inner pipe (c610) of the double pipe structure for the connection of the unit pipe module (c600), unit pipe module (c600) It may be advantageous to have a thickness corresponding to the thickness of the appearance (c620) and the heat insulating material (c630).
  • connection ring module (c700) may be formed to be the same as the outer diameter of the appearance (c620).
  • connection ring module (c700) of the present modification may be formed of a heat insulating material.
  • the present modification also includes a double pipe structure and a heat insulating material in order to reduce heat exchange between the inside and the outside of the unit pipe module (c600). The effect of reducing heat exchange can be obtained.
  • connection ring module (c700) may be advantageously formed of a material having a low heat transfer rate while having a strength that can withstand the pressure in the ground and the pressure of the flowing heat transfer medium.
  • the geothermal well pipe assembly according to the present invention can obtain the effect of increasing the strength of the plurality of pipe connection portions inserted into the geothermal well through the configuration of the first to third embodiments described above to improve the durability of the geothermal well pipe assembly.
  • Figure 32 is a view showing a modification of the first-first embodiment of the geothermal heat exchange system according to the present invention.
  • the geothermal well heat exchange system may include a geothermal well (d100), a pipe (d200), and a heat storage unit (d300).
  • Geothermal well (d100) is a configuration of a hole formed by excavating the ground, it can be formed by excavating to the depth to generate geothermal heat of the temperature to be used.
  • the geothermal well (d100) may be advantageously formed in a width such that a sufficient amount of heat transfer medium can flow to recover the geothermal heat.
  • the pipe (d200) is configured to partition the internal space of the geothermal well (d100) described above, extends from the ground to the bottom of the geothermal well (d100), geothermal well (d100) inside the geothermal well (d100)
  • the inner peripheral surface may be spaced apart from each other.
  • the pipes d200 are spaced apart at predetermined intervals without contacting the inner bottom surface of the geothermal well d100.
  • the configuration of the pipe (d200) divides the space inside the geothermal well (d100) into the outer and inner space of the pipe (d200), the heat transfer medium for recovering geothermal heat between the geothermal well (d100) and the pipe (d200) It is injected into the space of the geothermal heat is heated by the geothermal well (d100) may be introduced into the inside of the pipe (d200) and recovered to the ground through the pipe (d200).
  • the configuration of the pipe (d200) may be advantageously formed with sufficient strength to withstand the pressure inside the ground and the pressure of the flowing heat transfer medium.
  • the pipe d200 may be formed to include a heat insulating part for lowering the heat exchange efficiency between the inside and the outside of the pipe d200.
  • the heat insulating part may be formed with at least one heat insulating material along the surface of the pipe (d200), it may be advantageous to be provided in the space between the outer tube and the inner tube of the double-pipe type including the outer tube and the inner tube (200). .
  • the heat insulating part is formed in a form filled with a foamable heat insulating material such as urethane foam, foam rubber, etc., various materials such as air, styrofoam, glass fiber is applied, and the like and materials may be varied without limitation.
  • a foamable heat insulating material such as urethane foam, foam rubber, etc.
  • various materials such as air, styrofoam, glass fiber is applied, and the like and materials may be varied without limitation.
  • the heat insulation portion may be formed with a heat resistance of the upper portion of the heat insulation portion relatively larger than the heat resistance of the lower portion of the heat insulation portion.
  • the heat transfer rate is a kind of flow, and the combination of the thermal conductivity, the thickness of the material and the cross-sectional area is called the resistance to this flow. Since the temperature is the driving function for the heat flow, the heat flow is different from the difference of the thermal potential. It can be said to be proportional and inversely proportional to thermal resistance.
  • the heat flow becomes inversely small, and the upper portion of the geothermal heat insulating pipe according to the present invention may have less heat flow than the lower portion.
  • the total heat transfer coefficient of the upper portion of the pipe (d200) may be higher through the heat insulation.
  • the heat storage unit (d300) is a configuration in which the heat storage material is provided in the space between the geothermal well (d100) and the pipe (d200), it is formed so that the heat transfer medium injected into the geothermal well (d100). Can be.
  • the heat storage material composed of the heat storage unit (d300) may be a material having a large heat capacity such as gravel, sand, rock fragments, concrete structures, concrete fragments, metal structures, metal grains, etc.
  • the heat transfer medium that has geothermal heat and flows around The arrangement may be varied without limitation if provided to transfer heat to the furnace.
  • the heat storage unit d300 may be provided with a plurality of heat storage materials having a predetermined volume in a space between the geothermal well d100 and the pipe d200.
  • the interval between each heat storage material is formed in the heat storage unit (d300), the heat transfer medium flows through the gap of the heat storage material can move to the bottom of the geothermal well (d100).
  • the heat storage unit d300 itself receives the geothermal heat from the inside of the geothermal well d100, the heat capacity inside the geothermal well d100 may be increased, and the thermal conductivity coefficient may be improved.
  • turbulence occurs during the flow of the heat transfer medium to the bottom of the geothermal well (d100), thereby maximizing the amount of heat that the heat transfer medium recovers from the geothermal well (d100).
  • the heat transfer medium can receive geothermal heat through the inner circumferential surface of the geothermal well (d100) and at the same time can receive heat from the heat storage unit (d300) heated by geothermal heat, thereby improving the thermal conductivity inside the production well to improve geothermal heat. It can absorb effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • heat storage unit (d300) may be advantageously provided in the space between the lower surface of the geothermal well (d100) and the pipe (d200).
  • the modified example of the geothermal well heat exchange system 1-1 may include a geothermal well (d100), a pipe (d200), and a heat storage unit (d300) as shown in FIG.
  • geothermal well (d100) and the pipe (d200) is the same configuration as the geothermal well (d100) and the pipe (d200) of the first-first embodiment described above, a detailed description thereof will be omitted.
  • the heat storage unit d300 is also configured in the same manner as the heat storage unit d300 of the first-first embodiment described above, but in the present modification, the heat storage unit d300 is provided to a predetermined depth under the geothermal well d100. Can be.
  • the flow rate of the heat transfer medium is increased due to the heat storage unit (d300), so that even when a high temperature heat transfer medium is injected, the effect of not losing heat of the heat transfer medium to the rock of the geothermal well at the low depth portion of the geothermal well can be obtained. have.
  • Example 33 is a view showing the configuration of Example 1-2 of the geothermal heat exchange system according to the present invention.
  • the geothermal well heat exchange system may include a geothermal well (d100), a pipe (d200), and a heat storage unit (d400).
  • the configuration of the geothermal well (d100) and the pipe (d200) is the same as the configuration of the geothermal well (d100) and the pipe (d200) of the first-first embodiment described above will be omitted.
  • the heat storage unit (d400) is provided in the space between the geothermal well (d100) and the pipe (d200) as in the first embodiment described above can pass through the heat transfer medium injected into the geothermal well (d100) It can be formed to be.
  • a material having a large heat capacity may be applied, and the configuration may be various without being limited if it is provided to transfer heat to a heat transfer medium that carries geothermal heat and flows around.
  • the heat storage unit (d400) is made of a heat storage material of the porous form, the heat transfer medium can be transmitted through the gap formed in the heat storage unit (d400).
  • the heat transfer medium can receive geothermal heat through the inner circumferential surface of the geothermal well (d100) and at the same time can receive heat from the heat storage unit (d400) heated by geothermal heat, thereby increasing the area of the heat transfer medium to receive geothermal heat significantly. Can be.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the heat storage unit (d400) of the present embodiment may also be provided between the lower surface of the geothermal well (d100) and the lower end of the pipe (d200), as in the first-first embodiment described above, All may be provided to the bottom surface, or may be provided only to a predetermined depth of the lower portion of the geothermal well (d100).
  • Figure 34 is a view showing the configuration of the first to third embodiments of the geothermal heat exchange system according to the present invention
  • Figure 35 is a view showing a first modification of the geothermal heat exchange system to the first to third embodiments according to the present invention
  • 36 is a view showing the second modified example of the geothermal heat exchange system 1-3 according to the present invention.
  • the geothermal well heat exchange system may include a geothermal well (d100), a pipe (d200), and a heat storage unit (d500).
  • the configuration of the geothermal well (d100) and the pipe (d200) is the same as the configuration of the geothermal well (d100) and the pipe (d200) of the first-first embodiment described above will be omitted.
  • the heat storage unit (d500) is provided in the space between the geothermal well (d100) and the pipe (d200) as in the first embodiment described above can pass through the heat transfer medium injected into the geothermal well (d100) It can be formed to be.
  • a material having a large heat capacity such as concrete may be applied, and the configuration may be various without being limited if it is provided to transfer heat to a heat transfer medium having geothermal heat flowing therein.
  • the heat storage unit d500 may be formed by combining a plurality of heat storage materials protruding to the outer circumferential surface of the pipe d200.
  • each heat storage material may be advantageously formed to have a predetermined area on the upper surface of the heat storage material in order to form a turbulence according to the flow resistance of the heat transfer medium.
  • the heat storage unit d510 is formed in a form corresponding to the shape of the plate and the geothermal well (d100) protruding to the outer portion around the pipe (d200), each heat storage unit (d510) is a heat transfer flow
  • a plurality of through holes d512 through which the medium can pass may be formed.
  • Such a configuration may cause turbulence in the process of flowing the heat transfer medium to the bottom of the geothermal well (d100), thereby maximizing the amount of heat that the heat transfer medium recovers from the geothermal well (d100).
  • the configuration of the heat storage unit (d510) also obtains the effect of serving as a centralizer (centralizer) to assist the pipe (d200) to be located in the center of the geothermal well (d100) inside the geothermal well (d100). Can be.
  • the configuration of the heat storage unit d510 serves as a fin for dissipating the heat of the geothermal well d100, thereby greatly increasing the average heat capacity and the heat transfer coefficient inside the geothermal well.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the modified example of the geothermal heat exchange system 1-3 according to the present invention may include a geothermal well (d100), a pipe (d200), and a heat storage unit (d500) as shown in FIGS. 35 and 36. .
  • geothermal well (d100), the pipe (d200) and the heat storage unit (d500) is the same configuration as the configuration of the geothermal well (d100), pipe (d200) and the heat storage unit (d500) of the embodiment 1-3 described above in detail The description will be omitted.
  • the heat storage unit d520 is formed in a plate shape having a relatively smaller area than the heat storage unit d510 of the first to third embodiments, and is arranged spirally along the outer circumferential surface of the pipe d200. Can be.
  • the heat storage unit d530 may be formed in a plate shape spirally wound along the outer circumferential surface of the pipe d200.
  • the heat transfer medium can receive geothermal heat through the inner circumferential surface of the geothermal heat crystal (d100) and at the same time receive heat from the heat storage unit (d500) heated by geothermal heat, thereby reducing the heat capacity and heat transfer coefficient inside the geothermal heat crystal (d100). Can be increased significantly.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the configuration of the heat storage unit d500 is not limited to the present modification as long as it is provided to generate resistance to the heat transfer medium, such as a zigzag arrangement or a random arrangement, and the shape and arrangement may be various.
  • the heat storage unit d500 having a protruding shape may be formed to protrude to the same length from the pipe.
  • the length may be advantageously formed to a length corresponding to the distance between the geothermal well (d100) and the pipe (d200).
  • the configuration of the heat storage unit (d500) is a centralizer that can assist the pipe (d200) is located in the center of the geothermal well (d100) when the pipe (d200) is disposed inside the geothermal well (d100) It can act as a centralizer.
  • the injection well into which the heat transfer medium is injected into the geothermal well (d100) is formed evenly, so that the heat transfer medium can receive the geothermal heat evenly.
  • the temperature difference between the inside and the outside of the pipe d200 may be greatest at the upper portion of the geothermal well d100.
  • the pipe d200 includes a heat insulating part for lowering heat exchange efficiency between the inside and the outside of the pipe d200.
  • the pipe (d200) is formed in a double tube structure formed of the outer and inner tube, and is formed in the form of filling a heat insulating material between the outer and inner tube, the heat storage unit (d500) is coupled to the outer peripheral surface of the outer surface is heated It is possible to prevent the heat of the recovered heat transfer medium from being transferred to the outside of the pipe d200.
  • the heat storage unit (d500) of the present embodiment may also be provided only up to a predetermined depth of the geothermal well (d100).
  • FIG. 37 is a diagram showing the configuration of the first to fourth embodiments of the geothermal heat exchange system according to the present invention.
  • the geothermal well heat exchange system may include a geothermal well (d100), a pipe (d200), and a heat storage unit (d300).
  • geothermal well (d100) and the heat storage unit (d300) have the same configuration as the geothermal well (d100) and the heat storage unit (d300) of the first-first embodiment described above, a detailed description thereof will be omitted.
  • the pipe d200 may have a diameter L4 of the upper outer circumferential surface of the pipe d200 relatively larger than the diameter L5 of the lower circumferential surface of the lower pipe d200.
  • Such a configuration may increase the space between the inner circumferential surface of the geothermal well (d100) and the pipe (d200) toward the lower portion of the geothermal well (d100).
  • the flow path of the heat transfer medium becomes wider toward the bottom of the geothermal well (d100), and when the heat transfer medium flows under the same pressure, the flow rate of the heat transfer medium decreases toward the bottom of the geothermal well (d100), and the heat transfer medium Time to flow in the geothermal well (d100) can be further increased.
  • the total amount of heat received by the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the heat storage unit (d300) of the present embodiment may also be provided only up to a predetermined depth of the geothermal well (d100).
  • FIG. 38 is a view showing the first-first embodiment of the geothermal heat exchange system construction method according to the present invention.
  • the geothermal heat exchange system construction method may include an excavation step (dS100), a charging and charging step (dS200), an insertion step (dS300), and a filling step (dS400).
  • Excavation step is a step of excavating the ground to a predetermined diameter to form a geothermal well, it is possible to excavate the ground to a depth that the geothermal heat of the temperature to be used and a sufficient amount of heat transfer medium can flow have.
  • This excavation step (dS100) can generally excavate geothermal well using a process and equipment for excavating the ground.
  • the temporary charging step (dS200) is a step of filling the heat storage material with a predetermined thickness in the lower end of the geothermal well formed in the above-mentioned excavation step (dS100), the thickness of the geothermal well and the insertion step (dS300) to be described later
  • the pipe inserted into the geothermal well may be filled with a thickness corresponding to the spaced interval.
  • the heat storage material is applied to a material having a large heat capacity such as concrete, formed so that the heat transfer medium can penetrate, and is provided to transfer heat to the heat transfer medium that carries geothermal heat and then flows around the configuration can be varied without limitation have.
  • the insertion step (dS300) is a step of extending and inserting the pipe from the ground to the bottom of the geothermal well inside the geothermal well, the outer peripheral surface of the pipe may be arranged to be spaced apart from the inner peripheral surface of the geothermal well.
  • the pipe may be inserted into the geothermal well while extending the length by connecting the plurality of unit pipes.
  • the heat storage material may support the pipe by contacting the upper end of the heat storage material filled in the above-described charging and charging step (dS200) and the lower end of the pipe.
  • the pipe inserted in the insertion step (dS300) may be advantageous to use a pipe including a heat insulating portion that can lower the heat exchange efficiency between the inside and the outside of the pipe.
  • the pipe is formed in the form of a double pipe structure, the insulation material is provided in the space between the outer tube and the inner tube of the pipe may be formed to form a heat insulating portion.
  • the filling step dS400 may be a step of filling the heat storage material in the space between the inner circumferential surface of the geothermal well and the outer circumferential surface of the pipe.
  • the heat storage material may be filled up to the ground of the space between the geothermal well and the pipe, or after filling the heat storage material to a predetermined depth below the geothermal well may end the charging step (dS400).
  • a heat storage material of a material having a relatively higher permeability of the heat transfer medium may be filled.
  • the geothermal well heat exchange system formed through this process may inject a heat transfer medium through the space between the geothermal well filled with the heat storage material and the pipe, and recover the heat transfer medium heated under the geothermal well through the inside of the pipe.
  • the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal heat crystal (d100) and at the same time receives heat from the heat storage unit (d510) heated by geothermal heat, thereby reducing the heat capacity and heat transfer coefficient inside the geothermal heat crystal (d100). Can be increased significantly.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • 39 is a view showing the embodiment 1-2 of the geothermal heat exchange system construction method according to the present invention.
  • the geothermal heat exchange system construction method may include a heat storage pipe manufacturing step (dS500), an excavation step (dS600), and an insertion step (dS700).
  • the heat storage pipe manufacturing step (dS500) may be a step of manufacturing the heat storage pipe by combining the pipe and the heat storage material in a form in which a plurality of heat storage materials protrude on the outer circumferential surface of the pipe.
  • the heat storage material is applied to a material having a large heat capacity, such as concrete, the heat transfer medium is formed so as to permeate, if the geothermal heat is provided to transfer heat to the heat transfer medium flowing around the configuration is not limited and varied can do.
  • the plurality of heat storage materials may be arranged in various ways such as spiral arrangement, zigzag arrangement, and random arrangement along the outer circumferential surface of the pipe.
  • each heat storage material is arranged and coupled so that a predetermined area is formed toward the upper side of the pipe.
  • the pipe used in the heat storage pipe may be advantageous to use a pipe containing a heat insulating material that can lower the heat exchange efficiency between the inside and the outside of the pipe.
  • the excavation step (dS600) is the same process as the excavation step (dS100) of the heat exchange system construction method embodiment 1-1 described above, the heat storage pipe manufactured in the above-described heat storage pipe manufacturing step (dS500) is inserted. Geothermal wells can be excavated to the extent possible.
  • the insertion step (dS700) may be a step of inserting the heat storage pipe to the inside of the geothermal well formed in the excavation step described above, to the bottom of the geothermal well.
  • the insertion step (dS700) may be inserted into the geothermal well while extending the length by connecting a plurality of heat storage pipe.
  • the heat storage pipe to be inserted may maintain a gap between the pipe and the geothermal well through a plurality of heat storage material coupled to the side of the pipe, the heat storage pipe may be provided in the center of the geothermal well.
  • the lower end of the heat storage pipe may be advantageously spaced apart from the lower surface of the geothermal well by a predetermined interval so that the heat transfer medium injected into the outside of the pipe may flow into the inside of the pipe.
  • the pipe may be extended to the ground of the geothermal well by connecting pipes to which the heat storage material is not coupled.
  • the heat storage pipe may be connected to a lower portion of the geothermal well, and the general pipe may be connected to the ground above the heat storage pipe.
  • the geothermal well heat exchange system formed through this process may inject a heat transfer medium through the space between the geothermal well filled with the heat storage material and the pipe, and recover the heat transfer medium heated under the geothermal well through the inside of the pipe.
  • the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal heat crystal (d100) and at the same time receives heat from the heat storage unit (d510) heated by geothermal heat, thereby reducing the heat capacity and heat transfer coefficient inside the geothermal heat crystal (d100). Can be increased significantly.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • FIG. 40 is a cross-sectional view showing the configuration of Embodiment 2-1 of the geothermal heat exchange system according to the present invention
  • FIG. 41 is a plan view showing the configuration of Embodiment 2-1 of the geothermal heat exchange system according to the present invention
  • 42 is a view showing a modification of the geothermal heat exchange system 2-1 embodiment according to the present invention.
  • the geothermal well heat exchange system may include a geothermal well (e100), an outer pipe (e200), an inner pipe (e300), and a heat storage unit (e400).
  • a geothermal well e100
  • an outer pipe e200
  • an inner pipe e300
  • a heat storage unit e400
  • Geothermal well is a configuration of a hole formed by excavating the ground, it may be formed by excavating to the depth to generate geothermal heat of the temperature to be used.
  • the geothermal well e100 is formed to a width such that a sufficient amount of the heat transfer medium can flow to recover the geothermal heat.
  • the outer pipe (e200) is inserted into the interior of the geothermal well (e100) described above, extends from the ground to the bottom of the geothermal well (e100), the inner peripheral surface of the geothermal well (e100) inside the geothermal well (e100) And may be spaced apart from each other.
  • the outer pipe e200 is spaced apart at predetermined intervals without contacting the inner bottom surface of the geothermal well e100.
  • the outer pipe e200 may be formed in the form of a porous pipe in which a plurality of through-holes in which the inside and the outside of the outer pipe e200 communicate with each other are formed on a surface of the outer pipe e200.
  • the through hole facilitates the flow of the heat transfer medium injected into the geothermal well (e100) and facilitates heat transfer through convection from the inner surface of the geothermal well (e100) to the production well, thereby facilitating recovery of geothermal heat.
  • the configuration of the outer pipe (e200) may be advantageously formed to have sufficient strength to withstand the pressure inside the ground and the pressure of the flowing heat transfer medium.
  • the inner pipe (e300) is inserted into the inside of the above-described outer pipe (e200), is formed with a length corresponding to the outer pipe (e200), it can be spaced apart from the inner peripheral surface of the outer pipe (e200). have.
  • the inner pipe e300 may also be advantageously formed with sufficient strength to withstand the pressure inside the ground and the pressure of the flowing heat transfer medium.
  • the inner pipe e300 may be formed to include a heat insulating part for lowering the heat exchange efficiency between the inside and the outside of the inner pipe e300.
  • the heat insulation part may be formed with at least one heat insulating material along the surface of the inner pipe e300, and it may be advantageous to be provided in the space between the outer pipe and the inner pipe of the inner pipe e300 having a double pipe shape including an outer pipe and an inner pipe. Can be.
  • the insulation part is formed in a form filled with a foam insulation material such as urethane foam, foam rubber, etc., various materials such as air, styrofoam, glass fiber is applied, and the like and materials may be varied without limitation.
  • a foam insulation material such as urethane foam, foam rubber, etc.
  • various materials such as air, styrofoam, glass fiber is applied, and the like and materials may be varied without limitation.
  • the inner pipe e300 may have a heat resistance above the inner pipe e300 relatively greater than a heat resistance under the inner pipe e300.
  • the heat transfer rate is a kind of flow, and the combination of the thermal conductivity, the thickness of the material and the cross-sectional area is called the resistance to this flow. Since the temperature is the driving function for the heat flow, the heat flow is different from the difference of the thermal potential. It can be said to be proportional and inversely proportional to thermal resistance.
  • the heat flow becomes inversely small, and the upper portion of the geothermal heat insulating pipe according to the present invention may have less heat flow than the lower portion.
  • the total heat transfer coefficient of the upper portion of the inner pipe (e300) may be higher, and such a configuration is such that in the process of circulating the heat transfer medium inside the geothermal well (e100), in the case of the upper portion of the geothermal well (e100), the inner pipe ( Since the temperature difference between the inside and outside of the e300 is larger than the lower portion, it may be advantageous to improve the efficiency of the geothermal recovery.
  • the geothermal well circulation system has an outer pipe e200 having a width smaller than that of the geothermal well e100, and the width of the outer pipe e200.
  • the inner pipe e300 may be formed in a relatively smaller width.
  • outer pipe e200 may be disposed to be spaced apart from each other inside the geothermal well e100, and the inner pipe e300 may be disposed to be spaced apart from each other inside the outer pipe e200.
  • the outer pipe e200 may have a first support for maintaining a distance from the inner pipe e300.
  • a second support part e220 may be included to maintain a distance between the e210 and the geothermal well e100.
  • the first support part e210 contacts the inner circumferential surface of the outer pipe e200 and the outer circumferential surface of the inner pipe e300 to maintain a gap between the outer pipe e200 and the inner pipe e300, and the outer pipe e200 and the inner pipe. It may be fixed to at least one of the (e300).
  • the second support part e220 may be formed to contact the outer circumferential surface of the outer pipe e200 and the inner wall of the geothermal well e100 to maintain a gap between the outer pipe e200 and the geothermal well e100.
  • the plurality of second support parts e220 are radially disposed on a horizontal cross section and protrude at the same distance so that the outer pipe e200 is disposed at the center of the geothermal well e100.
  • the second support part e220 may be formed to have a downward slope and protrude to the outside of the outer pipe e200 at an interval spaced apart from the geothermal well e100, and then bend in an inner direction of the outer pipe e200.
  • the second support part e220 supports the outer pipe e200 to some extent, when the outer pipe e200 is inserted into the geothermal well e100, the second support part e220 is geothermal well e100. ) Can be prevented.
  • the heat storage unit (e400) is a configuration in which the heat storage material is provided in the space between the geothermal well (e100) and the outer pipe (e200), it is formed so that the heat transfer medium injected into the geothermal well (e100). Can be.
  • the heat storage material composed of the heat storage unit (e400) may be applied to a material having a large heat capacity, such as gravel, sand or concrete, and in addition to the geothermal heat is provided if the heat transfer medium is provided to transfer the heat to the surrounding medium is not limited in configuration. It can be varied without.
  • the heat storage unit e400 may be provided with a plurality of heat storage materials having a predetermined volume in a space between the geothermal well e100 and the outer pipe e200.
  • the interval between each heat storage material is formed in the heat storage unit (e400), the heat transfer medium flows through the heat storage material can move to the bottom of the geothermal well (e100).
  • the heat transfer medium injected into the outer space of the inner pipe (e300) has a space between the geothermal well (e100) and the outer pipe (e200) and the outer pipe (e200) through a plurality of through holes formed in the outer pipe (e200).
  • the space between the inner pipe e300 may communicate with each other and be heated by geothermal heat.
  • the space between the geothermal well (e100) and the outer pipe (e200) serves as a flow path, it is possible to reduce the power required of the pump required to circulate the heat transfer medium.
  • the heated heat transfer medium may flow into the inner pipe e300 from the bottom of the geothermal well e100 and be recovered to the ground through the inner pipe e300.
  • the flow of the heat transfer medium increases in the process of flowing the heat transfer medium to the bottom of the geothermal well (e100), so that turbulence is formed, and such turbulence may promote heat transfer from the geothermal well (e100) to the production well. .
  • the heat transfer medium can receive geothermal heat through the inner circumferential surface of the geothermal well (e100) and at the same time can receive heat from the heat storage unit (e400) heated by geothermal heat, thereby improving the thermal conductivity inside the production well to improve geothermal heat. It can absorb effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the geothermal well (e100) Since the space between the geothermal well (e100) and the outer pipe (e200) is filled with the heat storage unit (e400), even if the geothermal well (e100) is formed in a region of weak ground strength, the geothermal well (e100) The inner circumferential surface is collapsed and the geothermal heat exchange system can be prevented from being damaged.
  • the heat storage unit (e400) may be advantageously provided in the space between the lower surface of the geothermal well (e100) and the aforementioned two pipes.
  • the modified example of the geothermal heat exchange system 2-1 embodiment according to the present invention is a geothermal well (e100), outer pipe (e200), inner pipe (e300) and heat storage unit (e400) as shown in FIG. It may include.
  • the geothermal well (e100), the outer pipe (e200) and the inner pipe (e300) is the same configuration as the configuration of the geothermal well (e100), outer pipe (e200) and inner pipe (e300) of the above-described embodiment 2-1. Therefore, detailed description will be omitted.
  • the heat storage unit e400 also has the same structure as the heat storage unit e400 of the above-described embodiment 2-1, but in the present modification, the heat storage unit e400 is provided to a predetermined depth under the geothermal well e100. Can be.
  • the heat storage unit e400 when the heat storage unit e400 is provided in the space between the geothermal well e100 and the outer pipe e200, all of the heat storage unit e400 is not provided from the ground to the lower surface of the geothermal well e100 as in the above-described embodiment 2-1. Instead, it may be provided only up to a predetermined depth of the bottom of the geothermal well (e100).
  • geothermal heat of the temperature to be used inside the geothermal well (e100) is generated at the lower end of the geothermal well (e100), turbulence occurs in the flow of the heat transfer medium at the lower end of the geothermal well (e100), thereby improving geothermal recovery efficiency. A synergistic effect can be obtained.
  • Example 43 is a diagram showing the configuration of Example 2-2 of the geothermal heat exchange system according to the present invention.
  • the geothermal well heat exchange system may include a geothermal well (e100), an outer pipe (e200), an inner pipe (e300), and a heat storage unit (e500).
  • a geothermal well e100
  • an outer pipe e200
  • an inner pipe e300
  • a heat storage unit e500
  • the configuration of the geothermal well (e100), the outer pipe (e200) and the inner pipe (e300) is the configuration of the geothermal well (e100), the outer pipe (e200) and the inner pipe (e300) of the above-described embodiment 2-1. Since the same configuration, detailed description thereof will be omitted.
  • the heat storage unit (e500) is provided in the space between the geothermal well (e100) and the inner pipe (e300) as in the above-described embodiment 2-1, the heat transfer medium is injected into the geothermal well (e100) It can be formed to be.
  • a material having a large heat capacity may be applied, and the configuration may be various without being limited if it is provided to transfer heat to a heat transfer medium that carries geothermal heat and flows around.
  • the heat storage unit e500 may be formed of a porous heat storage material, and the heat transfer medium may pass through the pores formed in the heat storage unit e500.
  • the flow of the heat transfer medium increases in the process of flowing the heat transfer medium to the bottom of the geothermal well (e100), so that turbulence is formed, and such turbulence may promote heat transfer from the geothermal well (e100) to the production well. .
  • the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal well (e100) and at the same time receives heat from the heat storage unit (e500) heated by geothermal heat, thereby improving the thermal conductivity coefficient inside the production well to improve geothermal heat. It can absorb effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the heat storage unit (e500) of the present embodiment may also be provided between the lower surface of the geothermal well (e100) and the lower end of the two pipes described above, as in the embodiment 2-1 described above, from the ground of the geothermal well (e100) It may be provided up to the bottom surface, or may be provided only up to a predetermined depth of the bottom of the geothermal well (e100).
  • FIG. 44 is a view showing the configuration of the second embodiment of the geothermal heat exchange system according to the present invention
  • FIG. 45 is a view showing the first modified example of the second embodiment of the geothermal heat exchange system according to the present invention.
  • 46 is a view showing the second modified example of the geothermal heat exchange system according to the second embodiment of the present invention.
  • the geothermal well heat exchange system may include a geothermal well (e100), an outer pipe (e200), an inner pipe (e300), and a heat storage unit (e600).
  • a geothermal well e100
  • an outer pipe e200
  • an inner pipe e300
  • a heat storage unit e600
  • the configuration of the geothermal well (e100), the outer pipe (e200) and the inner pipe (e300) is the configuration of the geothermal well (e100), the outer pipe (e200) and the inner pipe (e300) of the above-described embodiment 2-1. Since the same configuration, detailed description thereof will be omitted.
  • the heat storage unit (e600) is provided in the space between the geothermal well (e100) and the outer pipe (e200) as in the above-described embodiment 2-1, the heat transfer medium is injected into the geothermal well (e100) It can be formed to be.
  • a material having a large heat capacity such as concrete may be applied, and the configuration may be various without being limited if it is provided to transfer heat to a heat transfer medium having geothermal heat flowing therein.
  • the heat storage unit e600 may be formed by combining a plurality of heat storage materials protruding to the outer circumferential surface of the outer pipe e200.
  • each heat storage material may be advantageously formed to have a predetermined area on the upper surface of the heat storage material in order to generate a resistance to the flow of the heat transfer medium.
  • the heat storage unit e610 is formed in a form corresponding to the shape of the plate and the geothermal well (e100) protruding to the outside around the outer pipe (e200), each heat storage unit (e610) is flowing A plurality of through holes e612 through which the heat transfer medium can pass may be formed.
  • the flow of the heat transfer medium increases in the process of flowing the heat transfer medium to the bottom of the geothermal well (e100), so that turbulence is formed, and such turbulence may promote heat transfer from the geothermal well (e100) to the production well. .
  • the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal well (e100) and at the same time receives heat from the heat storage unit (e610) heated by geothermal heat, thereby improving the thermal conductivity coefficient inside the production well to improve geothermal heat. It can absorb effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the modified example of the geothermal heat exchange system according to the embodiment 2-3 of the present invention is geothermal well (e100), the outer pipe (e200), the inner pipe (e300) and the heat storage ( e600).
  • the geothermal well (e100), the outer pipe (e200), the inner pipe (e300) and the heat storage unit (e600) is the geothermal well (e100), the outer pipe (e200), the inner pipe (e300) of the above-described embodiment 2-3 )
  • the heat storage unit (e600) is the same configuration and detailed description thereof will be omitted.
  • the heat storage unit e620 is formed in a plate shape having a relatively smaller area than the heat storage unit e610 in the second embodiment, and is disposed spirally along the outer circumferential surface of the outer pipe e200. Can be.
  • the heat storage unit e630 may be formed in a plate shape spirally wound along the outer circumferential surface of the outer pipe e200.
  • This configuration allows the heat transfer medium to flow relatively naturally and smoothly, and in the process of flowing the heat transfer medium to the lower portion of the geothermal well (e100), the flow rate of the heat transfer medium is accelerated to form turbulent flow, thereby facilitating heat transfer. .
  • the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal well (e100) and at the same time receives heat from the heat storage unit (e610) heated by geothermal heat, thereby improving the thermal conductivity coefficient inside the production well to improve geothermal heat. It can absorb effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the configuration of the heat storage unit e620 is not limited to the present modification as long as it is provided to generate resistance in the heat transfer medium, such as a zigzag arrangement or a random arrangement, and the shape and arrangement may be various.
  • the heat storage unit (e600) of the present embodiment may also be provided only up to a predetermined depth of the geothermal well (e100).
  • Embodiments 2-4 of the geothermal heat exchange system according to the present invention are a view showing the configuration of Embodiments 2-4 of the geothermal heat exchange system according to the present invention.
  • the geothermal well heat exchange system may have a geothermal well (e100), an outer pipe (e200), an inner pipe (e300), and a heat storage unit (e400). .
  • the configuration of the geothermal well (e100), the outer pipe (e200) and the heat storage unit (e400) is the configuration of the geothermal well (e100), the outer pipe (e200) and the heat storage unit (e400) of the above-described embodiment 2-1. Since the same configuration, detailed description thereof will be omitted.
  • the basic configuration of the inner pipe (e300) may also be the same configuration as the inner pipe (e300) of the above-described embodiment 2-1.
  • the diameter L6-a of the upper outer circumferential surface of the inner pipe e300 may be relatively larger than the diameter L6-b of the lower outer circumferential surface of the lower inner pipe e300.
  • Such a configuration may increase the space between the inner circumferential surface of the geothermal well (e100) and the inner pipe (e300) toward the lower portion of the geothermal well (e100).
  • the flow path of the heat transfer medium becomes wider toward the bottom of the geothermal well (e100), and when the heat transfer medium flows under the same pressure, the flow rate of the heat transfer medium decreases toward the bottom of the geothermal well (e100), and the heat transfer medium is supported. It is possible to further increase the flow time inside the passion (e100).
  • the heat storage layer (e400) layer becomes thicker toward the lower portion of the geothermal well (e100), so that the heat capacity of the geothermal well is lower, and more turbulence is formed in the flowing heat transfer medium, thereby improving heat transfer efficiency.
  • the total amount of heat received by the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • the heat storage unit (e400) of the present embodiment may also be provided only up to a predetermined depth of the geothermal well (e100).
  • the inner pipe e300 of the present embodiment may have a diameter L7-a of the upper inner circumferential surface of the inner pipe e300 relatively smaller than the diameter L7-b of the lower inner circumferential surface of the inner pipe e300.
  • the flow rate of the heat transfer medium recovered through the inside of the inner pipe (e300) becomes faster toward the top of the geothermal well (e100), and thus the inside and outside of the inner pipe (e300) above the geothermal well (e100). Heat exchange can be prevented from occurring.
  • Embodiment 48 is a view showing Embodiment 2-1 of the geothermal heat exchange system construction method according to the present invention.
  • the geothermal well heat exchange system construction method is a method for constructing a geothermal well heat exchange system according to the above-described configuration, and includes an excavation step (eS100), a charging step (eS200), and an insertion step. (eS300) and the charging step (eS400) may be included.
  • Excavation step is a step to form a geothermal well by excavating the ground to a predetermined diameter, it is possible to excavate the ground to the depth that the geothermal heat of the temperature to use and a sufficient amount of heat transfer medium can flow have.
  • This excavation step can generally excavate geothermal well using a process and equipment for excavating the ground.
  • the temporary charging step (eS200) is a step of filling the heat storage material with a predetermined thickness at the lower end of the geothermal well formed in the above-mentioned excavation step (eS100), the thickness of the inside of the geothermal well in the insertion step (eS300) to be described later
  • the two pipes may be filled with a thickness corresponding to a gap spaced apart from the bottom of the geothermal well.
  • the heat storage material is applied to a material having a large heat capacity such as concrete, formed so that the heat transfer medium can penetrate, and is provided to transfer heat to the heat transfer medium that carries geothermal heat and then flows around the configuration can be varied without limitation have.
  • the insertion step (eS300) is a step of extending and inserting the outer pipe and the inner pipe from the ground to the bottom of the geothermal well into the geothermal well, and the outer circumferential surface of the outer pipe is spaced apart from the inner circumferential surface of the geothermal well, and the outer circumferential surface of the inner pipe May be spaced apart from the inner circumferential surface of the outer pipe.
  • the two pipes may be inserted into the geothermal well while extending the length by connecting the plurality of unit pipes.
  • the heat storage material may support the pipe by contacting the upper portion of the heat storage material filled in the above-described charging and charging step (eS200) and the lower end portion of the outer pipe and the inner pipe.
  • the inner pipe inserted in the insertion step (eS300) may be advantageous to use a pipe including a heat insulating portion that can lower the heat exchange efficiency between the inside and the outside of the inner pipe.
  • the inner pipe may be formed in the form of a double pipe structure, and the heat insulating material may be provided in the space between the outer pipe and the inner pipe of the inner pipe to form a heat insulating part.
  • the filling step eS400 may be a step of filling the heat storage material in a space between the inner circumferential surface of the geothermal well and the outer circumferential surface of the outer pipe.
  • the heat storage material may be filled up to the ground of the space between the geothermal well and the outer pipe, or the charging step (eS400) may be terminated after filling the heat storage material to a predetermined depth under the geothermal well.
  • a heat storage material of a material having a relatively higher permeability of the heat transfer medium may be filled.
  • the geothermal well heat exchange system formed through this process can inject heat transfer medium through the space between the geothermal well filled with the heat storage material and the inner pipe, and recover the heat transfer medium heated at the bottom of the geothermal well through the inside of the inner pipe. have.
  • the heat transfer medium flows through the outer pipe in the process of flowing to the bottom of the geothermal well, and at this time, the flow rate of the heat transfer medium is accelerated in the process of flowing the heat transfer medium to the bottom of the geothermal well to promote heat transfer You can.
  • the heat transfer medium can receive geothermal heat through the inner circumferential surface of the geothermal well and at the same time can receive heat from the heat storage portion heated by geothermal heat, thereby improving the heat conductivity inside the production well to absorb geothermal heat more effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.
  • Embodiment 49 is a view showing Embodiment 2-2 of the geothermal heat exchange system construction method according to the present invention.
  • the geothermal heat exchange system construction method according to the present invention is a method for constructing a geothermal heat exchange system according to the above configuration, the heat storage outer pipe manufacturing step (eS500), excavation step (eS600) and It may include an insertion step (eS700).
  • the heat storage outer pipe manufacturing step (eS500) may be a step of manufacturing the heat storage outer pipe by combining the outer pipe and the heat storage material in a form in which a plurality of heat storage materials protrude from the outer circumferential surface of the outer pipe.
  • the heat storage material is applied to a material having a large heat capacity, such as concrete, the heat transfer medium is formed so as to permeate, if the geothermal heat is provided to transfer heat to the heat transfer medium flowing around the configuration is not limited and varied can do.
  • the plurality of heat storage materials may be coupled to various arrangements such as spiral arrangement, zigzag arrangement, random arrangement along the outer circumferential surface of the pipe with respect to the outer pipe.
  • each heat storage material is arranged and coupled so that a predetermined area is formed toward the upper side of the pipe.
  • the excavation step (eS600) is the same process as the excavation step (eS100) of the heat exchange system construction method embodiment 2-1 according to the present invention described above, the heat storage pipe manufactured in the above-described heat storage pipe manufacturing step (eS500) is inserted. Geothermal wells can be excavated to the extent possible.
  • the insertion step (eS700) may be a step of inserting the heat storage outer pipe to the bottom of the geothermal well formed in the above-described excavation step, the inner pipe into the heat storage outer pipe.
  • the insertion step (eS700) can be inserted into the geothermal well while extending the length by connecting a plurality of heat storage outer pipe, the inner pipe can also be inserted into the geothermal well through the same method.
  • the inner pipe may be advantageous to use a pipe containing a heat insulating material that can lower the heat exchange efficiency between the inside and the outside of the inner pipe.
  • the lower end portions of the heat storage outer pipe and the inner pipe may be separated from the bottom surface of the geothermal well at predetermined intervals so that the heat transfer medium injected into the outside of the inner pipe may flow into the inner pipe.
  • the outer pipe may be extended to the ground of the geothermal well by connecting an external pipe to which the heat storage material is not bonded.
  • the heat storage outer pipe is connected to the lower part of the geothermal well, and the general outer pipe may be connected to the ground above the heat storage outer pipe.
  • the geothermal well heat exchange system formed through this process can inject heat transfer medium through the space between the geothermal well filled with the heat storage material and the inner pipe, and recover the heat transfer medium heated at the bottom of the geothermal well through the inside of the inner pipe. have.
  • the flow rate of the heat transfer medium is increased, so that turbulence may be formed to promote heat transfer.
  • the heat transfer medium can receive geothermal heat through the inner circumferential surface of the geothermal well and at the same time can receive heat from the heat storage portion heated by geothermal heat, thereby improving the heat conductivity inside the production well to absorb geothermal heat more effectively.
  • the total amount of heat delivered to the heat transfer medium is greatly increased to recover more geothermal heat, and the efficiency of the geothermal heat exchange system can be improved.

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Abstract

La présente invention concerne un tuyau isolant de puits géothermique, un ensemble tuyau de puits géothermique, un système d'échange de chaleur de puits géothermique et un procédé de construction associé. Le tuyau isolant de puits géothermique selon la présente invention est formée afin d'être introduit dans un puits géothermique de sorte qu'un milieu de transfert de chaleur coule le long du puits géothermique, le tuyau comprenant : une partie tubulaire externe s'étendant jusqu'à la partie inférieure du puits géothermique à partir du sol, et pourvue d'un diamètre relativement plus petit que celui du puits géothermique, la partie tubulaire externe étant ainsi située pour être espacée de la surface intérieure du puits géothermique; une partie tubulaire interne présentant une longueur correspondante à la longueur de la partie tubulaire externe et pourvue d'un diamètre relativement plus petit que celui de la partie tubulaire externe, la partie tubulaire interne étant ainsi située pour être espacée de la surface intérieure de la partie tubulaire externe; et une partie isolante formée par disposition d'au moins un matériau isolant dans un espace entre la partie tubulaire externe et la partie tubulaire interne.
PCT/KR2016/007079 2015-06-30 2016-06-30 Tuyau isolant de puits géothermique, ensemble tuyau de puits géothermique, système d'échange de chaleur de puits géothermique et procédé de construction associé WO2017003239A1 (fr)

Priority Applications (1)

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CN201680038498.8A CN108027174A (zh) 2015-06-30 2016-06-30 地热井隔热管、地热井管总成及地热井热交换系统和其施工方法

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KR10-2015-0093297 2015-06-30
KR1020150093291A KR101822081B1 (ko) 2015-06-30 2015-06-30 연결링 모듈이 구비된 지열정 파이프 어셈블리
KR1020150093297A KR101714709B1 (ko) 2015-06-30 2015-06-30 지열정 열교환시스템 및 그의 시공방법
KR10-2015-0093284 2015-06-30
KR10-2015-0093301 2015-06-30
KR1020150093284A KR101636741B1 (ko) 2015-06-30 2015-06-30 지열정 단열 파이프
KR10-2015-0093306 2015-06-30
KR1020150093301A KR101714712B1 (ko) 2015-06-30 2015-06-30 서로 이격된 복수개의 지지부가 구비된 지열정 단열 파이프
KR10-2015-0093291 2015-06-30
KR1020150093306A KR101795583B1 (ko) 2015-06-30 2015-06-30 지열정 열교환시스템

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Publication number Priority date Publication date Assignee Title
CN114232591A (zh) * 2021-12-31 2022-03-25 核工业北京地质研究院 一种高温地热井的井口地基加固处理方法
EP3961122A4 (fr) * 2019-04-23 2022-06-08 Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Système d'extraction d'énergie géothermique utilisant un caloduc assisté par gravité étagé n'ayant pas d'effet d'accumulation de liquide
US11906205B2 (en) * 2018-02-12 2024-02-20 Quantitative Heat Oy Geothermal heat exchanger, geothermal heat arrangement and method for charging thermal energy into ground

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