KR101714709B1 - Heat exchange system for geothermal borehole and constructing method for the same - Google Patents

Abstract

The present invention relates to a geothermal heat exchange system and a construction method thereof, and a geothermal heat exchange system according to the present invention is a geothermal heat exchange system that is formed by excavating a ground, extending from the ground to a lower portion of the geothermal heat, And a heat storage medium in which a heat transfer medium for geothermal heat recovery passes is provided with a heat accumulation material in a space between the inner heat transfer surface and the inner heat transfer surface.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat exchange system and a method of constructing the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pass-through heat exchange system and a method of constructing the pass-through heat exchange system. More particularly, the present invention relates to a pass- And a method of constructing the same.

Geothermal heat, which is the heat retained in the ground, is the source of heat caused by the convection of the mantle inside the earth or the collapse of radioactive materials in the crust or the magma of the volcanic area.

In order to utilize these geothermal energy as an energy source, geothermal energy is utilized in more than 80 countries around the world.

Firstly, there is a small diameter vertical ceiling geothermal technology, which is a technique of drilling a depth of 30 ~ 200m and using a heat pump. Second, it drills 300 ~ 500 m of small diameter, circulates underground groundwater directly, It is the technology used in the subsea geothermal technology used in the third sub-zone, drilling more than 1000m of small diameter and bringing the high temperature water above 200 ℃ directly to the ground to generate geothermal power. Fourth depth is 500m ~ And the deep-seated geothermal technology, which is a technology to directly heat and generate geothermal heat without a heat pump, by circulating the geothermal circulation medium through drilling.

The present invention is based on the fourth and last invention, and is characterized in that a heat pipe is inserted into a pipe or an underground heat exchanger inside a pipe, and a heat transfer medium flows along the pipe, This is a technique for manufacturing a large diameter deep geothermal underground heat exchanger with high efficiency and high efficiency.

In particular, the global paradigm shifts from the existing deep geothermal heat to the deep geothermal heat, which is a high-efficiency type, and thus the large-diameter / deep geothermal technology proposed in the present invention attracts a great deal of attention worldwide.

In addition, the present invention is a technology suitable for a granite zone, which is a non-volcanic zone like Korea, and a rocky granite zone, and can be a technology capable of accelerating the domestic geothermal industry and creating a new geothermal energy business.

That is, by inserting one or more pipes into the passageway, the space inside the passageway is partitioned, and the heat transfer medium is injected into the passageway through a part of the partitioned space to receive the geothermal heat and recovered to the ground through another partitioned space And the heat energy is utilized.

At this time, the temperature of the heat transfer medium injected into the inside of the passageway is relatively low compared to the temperature of the passageway bottom, and since the heat transfer medium is recovered in the heated state under the passageway, There is a problem that the temperature difference between the spaces partitioned by the pipes becomes large.

In this case, heat transfer occurs through the pipe inserted into the inside of the geothermal column, and thus the heat of the heated heat transfer medium is transferred to the newly introduced heat transfer medium, and the temperature of the recovered heat transfer medium is lowered.

Therefore, the efficiency of the entire geothermal recovery heat exchange system is inevitably lowered, which is disadvantageous in that the economical efficiency in construction and operation of the geothermal recovery heat exchange system is lowered.

Also, there is a problem that the geothermal heat recoverable from inside the geothermal field is limited by the area inside the geothermal field and the flow rate of the heat transfer medium circulating inside the geothermal field.

Therefore, there is a problem that the overall geothermal heat recovery efficiency of the geothermal heat exchange system is difficult to improve.

In the case where the ground in the region where the geothermal heat is formed is weak for recovering the geothermal heat, the inner surface of the geothermal hole may collapse during the heat transfer medium flow. In this case, the channel of the heat transfer medium is blocked by the ground, There is a problem in that the function of the image forming apparatus can be lost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to improve the heat capacity and the thermal conductivity coefficient of the inside of the passageway and to recover from the passageway through the formation of a turbulent flow structure of the heat transfer medium circulating inside. And the heat recovery efficiency can be increased by increasing the amount of heat, and a method of construction thereof.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular embodiments that are described. It will be apparent to those skilled in the art, There will be.

According to an aspect of the present invention, there is provided a geothermal heat exchange system, comprising: a geothermal conduit formed by excavating a ground; a conduit extending from the ground to a lower portion of the geothermal conduit; And a heat storage unit having a heat storage material in the space between the pipe and the pipe and through which the heat transfer medium for recovering the geothermal heat passes.

Here, the heat storage unit may include a plurality of heat storage materials having a predetermined volume provided in the space between the pipe and the pipe.

In addition, the heat storage unit may include a porous heat storage material, and the heat transfer medium may be permeated through the space of the heat storage unit.

The heat storage unit may be formed by coupling a plurality of heat storage materials protruding from the outer circumferential surface of the pipe.

At this time, the heat storage material may be formed in a shape having a predetermined area on the upper surface of the heat storage material.

Further, the heat storage material may protrude from the pipe with the same length.

Meanwhile, the pipe may include a heat insulating portion for lowering heat exchange efficiency between the inside and the outside of the pipe.

At this time, the thermal resistance of the upper portion of the heat insulating portion may be larger than the thermal resistance of the lower portion of the thermal insulating portion.

In addition, the heat storage unit may be provided up to a predetermined depth below the paper holding fixture.

The diameter of the outer circumferential surface of the pipe may be larger than the diameter of the outer circumferential surface of the pipe.

Meanwhile, a method for constructing a geothermal heat exchanging system according to the present invention includes a digging step of excavating a ground to a predetermined diameter to form a geothermal heat, a step of inserting a portion of the geothermal heat formed in the excavating step And a filling step of filling the space between the inner peripheral surface of the tribo package and the pipe with a heat storage material.

The method may further include a filling step of filling the heat storage material at a lower end of the heat retaining column between the excavating step and the inserting step to a predetermined thickness.

Also, the filling step may fill the heat storage material to a predetermined depth below the tile.

Meanwhile, a method for constructing a heat-storage-heat exchanging system according to the present invention includes a heat storage pipe manufacturing step of manufacturing a heat storage pipe by joining the pipe and the heat storage material in such a manner that a plurality of heat storage materials protrude from an outer circumferential surface of the pipe including the heat insulation part, And an inserting step of inserting the heat accumulating pipe into the inside of the retaining pipe formed in the excavating step, to the lower part of the retaining pipe.

Here, the inserting step may insert the heat accumulating pipe down to a predetermined depth below the geothermal heat pipe, and extend to the ground by connecting the pipe without the heat accumulating material to the upper part of the heat accumulating pipe.

The following effects can be obtained by the geothermal heat exchange system and the construction method thereof according to the present invention.

First, it is possible to increase the internal heat capacity and thermal conductivity coefficient of the pass-through.

In this case, turbulence is generated in the heat transfer medium flowing inside the geothermal column, thereby improving heat recovery efficiency.

Third, it is possible to increase the area of the heat transfer medium receiving heat from the inside of the passageway, thereby improving the efficiency of the heat recovery.

Fourth, when the heat transfer medium circulates to the interior of the passageway, the heat transfer efficiency between the inside and the outside of the pipe inserted into the passageway can be lowered, thereby improving the efficiency of the geothermal heat recovery.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

Fig. 1 is a view showing a configuration of a first embodiment of a geothermal heat exchange system according to the present invention.
2 is a view showing a modification of the first embodiment of the heat rejecting heat exchanger system according to the present invention.
3 is a view showing a configuration of a second embodiment of a geothermal heat exchange system according to the present invention.
4 is a view showing a configuration of a third embodiment of a geothermal heat exchange system according to the present invention.
5 is a view showing a first modification of the third embodiment of the geothermal heat exchange system according to the present invention.
6 is a view showing a second modification of the third embodiment of the geothermal heat exchange system according to the present invention.
7 is a view showing a configuration of a fourth embodiment of a geothermal heat exchange system according to the present invention.
8 is a view showing a first embodiment of a method for constructing a geothermal heat exchange system according to the present invention.
9 is a view showing a second embodiment of a method for constructing a geothermal heat exchange system according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

Moreover, in describing the present invention, terms indicating a direction such as forward / rearward or upward / downward are described in order that a person skilled in the art can clearly understand the present invention, and the directions indicate relative directions, It is not limited.

< Passion  The first of the heat exchange systems Example >

1 and 2, the construction and effect of the first embodiment of the heat rejecting heat exchanger system according to the present invention will be described in detail.

Here, FIG. 1 is a view showing the construction of a first embodiment of a geothermal heat exchange system according to the present invention, and FIG. 2 is a view showing a modification of the first embodiment of the geothermal heat exchange system according to the present invention.

1, the geothermal heat exchanging system according to the present invention may include a geothermal heat exchanger 100, a pipe 200, and a heat storage unit 300.

The geothermal column 100 may be formed by excavating the geological ground to a depth at which geothermal heat of a desired temperature is generated.

In addition, it is advantageous that the geothermal column 100 is formed to have a width capable of flowing a sufficient amount of heat transfer medium to recover geothermal heat.

The pipe 200 has a structure for partitioning the inner space of the geothermal tube 100 and extends from the ground to a lower portion of the geothermal tube 100. The pipe 200 is provided inside the geothermal tube 100, And can be disposed apart from the inner circumferential surface.

In addition, it may be advantageous that the pipes 200 are disposed apart from each other at a predetermined interval without contacting the inner bottom surface of the trough 10.

That is, the structure of the pipe 200 divides a space inside the geothermal tube 100 into an outer space and an inner space of the pipe 200, and a heat transfer medium for recovering the geothermal heat is disposed between the geothermal tube 100 and the pipe 200 Heated by the geothermal heat, introduced into the interior of the pipe 200 from the lower part of the geothermal column 100, and recovered to the ground through the pipe 200.

The construction of such a pipe 200 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 200 may include a heat insulating portion for lowering heat exchange efficiency between the inside and the outside of the pipe 200.

The heat insulating part may be formed by providing at least one heat insulating material along the surface of the pipe 200, and it may be advantageously provided in a space between the inside and the outside of the double pipe type pipe 200 including the external pipe and the internal pipe .

Such a heat insulating portion is formed of a foamed heat insulating material such as foamed urethane or foam rubber filled with various heat insulating materials such as air, styrofoam, glass fiber, etc., and its material and construction may be varied without limitation.

In addition, the thermal resistance of the upper portion of the heat insulating portion may be larger than the thermal resistance of the lower portion of the thermal insulating portion.

Applying the Fourier's law, the heat transfer rate is a kind of flow, and the combination of the thermal conductivity coefficient, the material thickness and the cross-sectional area is called the resistance to this flow. Since the temperature is the driving function for the heat flow, Proportional, and inversely proportional to the thermal resistance.

Therefore, in the case where the heat resistance is high, the heat flow is reduced in inverse proportion, and the upper part of the geothermal heat insulating pipe according to the present invention may have less heat flow than the lower part.

That is, the total heat transfer coefficient of the upper portion of the pipe 200 may be higher through the construction of the heat insulating portion.

In this construction, in the process of circulating the heat transfer medium inside the geothermal column 100, the temperature difference between the inside and the outside of the pipe 200 in the upper part of the geothermal column 100 is larger than that in the lower part, Lt; / RTI &gt;

The heat storage unit 300 includes a heat storage medium 100 and a heat storage medium in a space between the heat storage medium 100 and the pipe 200. The heat storage medium 300 is formed to allow a heat transfer medium injected into the heat storage chamber 100 to pass therethrough .

The thermal storage material composed of the thermal storage unit 300 can be a material having a large heat capacity such as gravel, sand, rock, concrete structure, concrete debris, metal structure, metal granules, etc. In addition, The configuration is not limited and may vary.

In the present embodiment, the heat storage unit 300 may include a plurality of heat storage materials having a predetermined volume in the space between the heat storage unit 100 and the pipe 200.

At this time, the space between the heat storage materials is formed in the heat storage part 300, and the heat transfer medium flows through the space between the heat storage materials and can move to the lower part of the paper heat storage 100.

Since the heat accumulating unit 300 itself receives the geothermal heat from the inside of the geothermal tube 100, the heat capacity of the geothermal tube 100 can be increased and the heat conduction coefficient can be improved.

In addition, turbulence is generated in the course of the heat transfer medium flowing to the lower part of the geothermal column 100, thereby maximizing the amount of heat that the heat transfer medium collects inside the geothermal column 100.

In addition, the heat transfer medium receives the geothermal heat through the inner circumferential surface of the geothermal heat source 100 and can receive the heat of the heat storage unit 300 heated by the geothermal heat, thereby improving the thermal conductivity coefficient It can be effectively absorbed.

Therefore, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

Since the space between the geothermal tube 100 and the pipe 200 is filled with the heat accumulating unit 300, even when the geothermal tube 100 is formed in a region where the strength of the ground is weak, It is possible to obtain the effect of preventing the phenomenon that the heat exchanging system is collapsed and the passive heat exchanging system is broken.

In addition, it is advantageous that the heat storage part 300 is provided in the space between the lower surface of the geothermal heat pipe 100 and the pipe 200.

In this configuration, since the heat storage unit 300 supports the lower portion of the pipe 200 inserted into the inside of the retainer 100 at the lower surface of the retainer 100, The lower surface of the pipe 200 and the lower surface of the pipe 200 can be prevented from being in direct contact with each other.

2, the modified example of the first embodiment of the present invention may include a tile heat pipe 100, a pipe 200, and a heat storage unit 300. As shown in FIG.

Here, the geothermal control unit 100 and the pipe 200 have the same configurations as the geothermal control unit 100 and the pipe 200 of the first embodiment described above, and thus the detailed description thereof will be omitted.

The heat storage unit 300 may have the same structure as that of the heat storage unit 300 of the first embodiment described above, but the heat storage unit 300 may be provided up to a predetermined depth below the heat storage unit 100 .

That is, when the heat storage unit 300 is provided in the space between the tile heat pipe 100 and the pipe 200, it is not provided from the ground to the lower surface of the tile heat pipe 100 as in the first embodiment, But only up to a predetermined depth below passion 100.

In this configuration, the heat transfer medium injected into the inside of the geothermal column 100 moves downward along the geothermal passage, turbulence occurs in the region where the heat storage unit 300 is provided, and the heat exchange area can be increased.

Since the geothermal heat of the geothermal heat source 100 is generated at the lower end of the geothermal power source 100, the effect of increasing the geothermal heat recovery efficiency can be obtained intensively at the lower end of the geothermal power source 100.

In addition, since the heat storage medium 300 increases the flow velocity of the heat transfer medium, even when a high-temperature heat transfer medium is injected, the heat of the heat transfer medium is not lost in the low-depth portion of the heat transfer medium. have.

< Passion  The second of the heat exchange system Example >

Next, with reference to FIG. 3, the construction and effect of the second embodiment of the heat rejecting system according to the present invention will be described in detail.

Here, FIG. 3 is a diagram showing a configuration of a second embodiment of a geothermal heat exchange system according to the present invention.

3, the geothermal heat exchanger system according to the present invention may include a geothermal heat exchanger 100, a pipe 200, and a heat storage unit 400. As shown in FIG.

Here, the configurations of the tilting column 100 and the pipe 200 are the same as the configurations of the tilting column 100 and the pipe 200 in the first embodiment described above, and thus the detailed description thereof will be omitted.

The heat storage unit 400 is provided in the space between the tile heat pipe 100 and the pipe 200 so as to allow the heat transfer medium injected into the tile heat pipe 100 to pass therethrough, .

In addition, a material having a large heat capacity can be applied, and if the material is provided to transmit heat to a heat transfer medium which surrounds the object after it has geothermal heat, its configuration may be various and not limited.

However, in this embodiment, the heat storage unit 400 is formed of a porous heat storage material, and the heat transfer medium can be permeated through the space formed inside the heat storage unit 400.

This structure can maximize the amount of the geothermal heat recovered by the heat transfer medium by forming a turbulent flow in the course of the heat transfer medium flowing to the lower part of the geothermal column 100.

In addition, since the heat transfer medium receives the geothermal heat through the inner circumferential surface of the geothorac 100 and receives the heat of the heat storage unit 400 heated by the geothermal heat, the area where the heat transfer medium receives the geothermal heat is greatly increased .

Accordingly, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

The heat storage unit 400 of the present embodiment may be disposed between the lower surface of the tile heat pipe 100 and the lower end of the pipe 200 as in the first embodiment described above, Or may be provided only up to a predetermined depth below the paper fin 100.

Through such a configuration, the same effects as those described in the detailed description of the first embodiment can be obtained.

< Passion  The third of the heat exchange system Example >

Next, with reference to FIG. 4 to FIG. 6, the construction and effect of the third embodiment of the heat rejecting heat exchanger system according to the present invention will be described in detail.

5 is a diagram showing a first modification of the third embodiment of the geothermal heat exchange system according to the present invention, and Fig. 6 is a view showing a third modification of the third embodiment of the geothermal heat exchange system according to the present invention, Is a view showing a second modification of the third embodiment of the heat rejecting system according to the present invention.

4, the geothermal heat exchanger system according to the present invention may include a geothermal heat exchanger 100, a pipe 200, and a heat storage unit 500.

Here, the configurations of the tilting column 100 and the pipe 200 are the same as the configurations of the tilting column 100 and the pipe 200 in the first embodiment described above, and thus the detailed description thereof will be omitted.

The heat storage unit 500 is provided in the space between the tile heat exchanger 100 and the pipe 200 so as to allow the heat transfer medium injected into the interior of the tile heat pipe 100 to pass therethrough like the first embodiment .

Also, a material having a large heat capacity such as concrete can be applied, and if the material is provided to transfer heat to a heat transfer medium which surrounds the object after having geothermal heat, the constitution may be various without limitation.

However, the heat storage unit 500 may be formed by coupling a plurality of heat storage materials protruding from the outer circumferential surface of the pipe 200.

At this time, it is advantageous that each heat storage material is formed in a shape having a predetermined area on the upper surface of the heat storage material to form a turbulent flow according to the flow resistance of the heat transfer medium.

In this embodiment, the heat storage part 510 is formed in a shape corresponding to the plate shape and the shape of the paper fan 100 protruding to the outer side with the pipe 200 as a center, and each heat storage part 510 has heat transfer A plurality of through holes 512 through which the medium can pass can be formed.

This configuration can maximize the amount of heat that the heat transfer medium recovers from the inside of the geothermal column 100 by generating turbulence in the course of the heat transfer medium flowing to the lower portion of the geothermal column 100. [

The configuration of the heat storage unit 510 also has the effect of serving as a centralizer that assists the pipe 200 to be positioned at the center of the passbook 100 within the passbook 100 .

The configuration of the heat storage unit 510 serves as a fin for discharging the heat of the tribo package 100, so that the average heat capacity and the heat transfer coefficient inside the tribo package can be greatly increased.

Therefore, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

5 and 6, a modified example of the third embodiment of the present invention may include a tile heat pipe 100, a pipe 200, and a heat storage unit 500.

Here, the tangible heat pipe 100, the pipe 200 and the thermal storage unit 500 have the same configuration as the thermal storage unit 100, the pipe 200, and the thermal storage unit 500 of the third embodiment described above, It will be omitted.

However, in the first modification, the heat storage part 520 may be formed in a plate shape having a relatively small area as compared with the heat storage part 510 of the third embodiment, and may be arranged in a spiral shape along the outer peripheral surface of the pipe 200 .

In addition, in the second modification, the heat storage unit 530 may be formed in the form of a plate that is helically wound down along the outer circumferential surface of the pipe 200.

This configuration is advantageous in that a turbulent flow occurs in the process of flowing the heat transfer medium to the lower portion of the geothermal column 100 while flowing the heat transfer medium relatively smoothly and smoothly, The amount can be maximized.

In addition, the heat transfer medium can receive the heat of the geothermal heat 100 and the heat of the heat storage unit 500 heated by the geothermal heat, Can be greatly increased.

Accordingly, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

The configuration of the heat storage unit 500 is not limited to the present modification as long as it is arranged to generate a resistance in a heat transfer medium flowing in a zigzag arrangement, a random arrangement, or the like, and its shape and arrangement may vary.

Meanwhile, in the present embodiment, the heat storage part 500 protruding from the pipe may be formed to protrude from the pipe with the same length.

In addition, it may be advantageous that the length thereof is formed to have a length corresponding to the distance between the geothermal tube 100 and the pipe 200.

In this case, the configuration of the heat storage unit 500 is configured such that when the pipe 200 is disposed inside the geothermal tube 100, the centralizer 100, which can assist the pipe 200 in the center of the geothermal tube 100, and can act as a centralizer.

Therefore, the injection hole in which the heat transfer medium is injected into the inside of the geothermal column 100 is uniformly formed, so that the heat transfer medium can receive the geothermal heat evenly.

The temperature difference between the inside and the outside of the pipe 200 can be maximized at the upper part of the geothermal column 100 in the process of circulating the heat transfer medium inside the geothermal column 100 and recovering the geothermal heat.

Accordingly, it may be advantageous that the pipe 200 includes an insulating portion for lowering the heat exchange efficiency between the inside and the outside of the pipe 200.

In this case, the pipe 200 is formed as a double pipe structure formed of an outer pipe and an inner pipe, and a heat insulating material is filled between the outer pipe and the inner pipe. The heat storage unit 500 is coupled to the outer peripheral surface of the outer pipe, It is possible to prevent the heat of the recovered heat transfer medium from being transmitted to the outside of the pipe 200.

In addition, the heat storage unit 500 of the present embodiment may be provided only to a predetermined depth below the tile heat pipe 100.

Through such a configuration, the same effects as those described in the detailed description of the first embodiment can be obtained.

< Passion  Fourth of the heat exchange system Example >

Next, with reference to FIG. 7, the construction and effect of the fourth embodiment of the geothermal heat exchange system according to the present invention will be described in detail.

Here, FIG. 7 is a diagram showing a configuration of a fourth embodiment of a geothermal heat exchange system according to the present invention.

7, the geothermal heat exchanger system according to the present invention may include a geothermal heat exchanger 100, a pipe 200, and a heat storage unit 300. As shown in FIG.

Here, the configurations of the tangible heat pump 100 and the thermal storage unit 300 are the same as those of the thermal storage unit 100 and the thermal storage unit 300 of the first embodiment described above, and thus the detailed description thereof will be omitted.

The diameter of the outer circumferential surface of the pipe 200 may be larger than the diameter of the outer circumferential surface of the pipe 200.

This configuration can be made wider as the inner circumferential surface of the geothermal tube 100 and the space between the pipes 200 goes to the lower portion of the geothermal tube 100. [

Accordingly, as the flow path of the heat transfer medium becomes wider as it goes to the lower part of the geothermal column 100 and the heat transfer medium flows by the same pressure, the flow velocity of the heat transfer medium becomes slower as it goes to the lower part of the geothermal column 100, It is possible to further increase the time of flow inside the geothermal column 100.

As a result, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

In addition, the heat storage unit 300 of the present embodiment may be provided only to a predetermined lower depth of the geothermal heat pipe 100.

Through such a configuration, the same effects as those described in the detailed description of the first embodiment can be obtained.

< Passion  First of the heat exchange system construction method Example >

Next, with reference to FIG. 8, a first embodiment of a method for constructing a geothermal heat exchange system according to the present invention will be described in detail.

Here, FIG. 8 is a view showing a first embodiment of a construction method of a geothermal heat exchange system according to the present invention.

As shown in FIG. 8, the method for constructing the geothermal heat exchange system according to the present invention may include an excavation step S100, a charging step S200, an inserting step S300, and a charging step S400.

The excavation step S100 is a step of excavating the ground with a predetermined diameter to form a geothermal heat. The excavation step S100 is a step of excavating the ground with a depth at which the geothermal heat of the temperature to be used occurs and a sufficient amount of heat transfer medium can flow have.

In this excavation step (S100), generally, the digging pass can be excavated by using a process of digging the ground, an equipment, and the like.

Meanwhile, the charging step S200 is a step of filling a storage material at a predetermined thickness at a lower end portion of the storage tank formed at the excavation step S100 described above, The pipe inserted into the inside of the pipe can be filled with a thickness corresponding to the spacing distance.

The heat storage material is made of a material having a large heat capacity such as concrete, and is formed so that the heat transfer medium can be permeated. If the heat storage medium is provided to transmit heat to the heat transfer medium which surrounds the geothermal heat, have.

Meanwhile, the inserting step (S300) is a step of inserting the pipe extending from the ground to the lower part of the geothermal column with insides of the geothermal tube, and the outer circumferential surface of the pipe may be arranged to be spaced apart from the inner circumferential surface of the geothermal tube.

At this time, the pipe can be inserted into the inside of the pipe while extending a length by connecting a plurality of unit pipes.

In addition, the upper part of the heat storage material charged in the above-described charging step (S200) is brought into contact with the lower end part of the pipe, so that the heat storage material can support the pipe.

In addition, it may be advantageous to use a pipe inserted in the inserting step (S300) including a heat insulating portion that can lower the heat exchange efficiency between the inside and the outside of the pipe.

Such a pipe may be formed in the form of a double pipe structure, and may be formed so as to form a heat insulating portion by providing a heat insulating material in the space between the outer pipe and the inner pipe of the pipe.

Meanwhile, the charging step (S400) may be a step of filling the space between the inner peripheral surface of the tribo package and the outer peripheral surface of the pipe with the heat storage material.

At this time, the heat storage material may be filled up to the top of the space between the pipes and the space between the pipes, or the storage material (S400) may be terminated after the storage material is filled up to a predetermined depth below the storage space.

After the heat storage material is partially filled, the heat storage material having a higher permeability of the heat transfer medium may be filled thereafter.

In the geothermal heat exchanging system formed through such a process, the heat transfer medium is injected through the space between the pipes and the space between the pipes, and the heat transfer medium heated from the bottom of the passageway can be recovered through the interior of the pipe.

At this time, turbulence is generated in the course of the heat transfer medium flowing to the lower part of the geothermal column 100, so that the amount of heat that the heat transfer medium recovers in the geothermal column 100 can be maximized.

In addition, the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal heat source 100 and can receive the heat of the heat storage unit 510 heated by the geothermal heat, so that the heat capacity and the heat transfer coefficient Can be greatly increased.

Accordingly, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

< Passion  The second of the heat exchange system construction method Example >

Next, with reference to FIG. 9, a second embodiment of a method for constructing a geothermal heat exchange system according to the present invention will be described in detail.

Here, FIG. 9 is a view showing a second embodiment of a method for constructing a geothermal heat exchange system according to the present invention.

9, the method for constructing the geothermal heat exchange system according to the present invention may include a heat storage pipe manufacturing step (S500), an excavation step (S600), and an inserting step (S700).

The heat storage pipe manufacturing step S500 may be a step of manufacturing a heat storage pipe by joining the pipe and the heat storage material in such a manner that a plurality of heat storage materials protrude from the outer peripheral surface of the pipe.

In this case, the heat storage material is formed of a material having a large heat capacity, such as concrete, and is formed so that the heat transfer medium can be permeated. If the heat storage medium is provided so as to transfer heat to the heat transfer medium which surrounds the geothermal heat, can do.

The plurality of heat storage materials may be arranged in various arrangements such as a spiral arrangement, a zigzag arrangement, a random arrangement, and the like along the outer peripheral surface of the pipe around the pipe.

Further, it may be advantageous that the respective heat storage materials are arranged and coupled so as to form a predetermined area toward the upper side of the pipe.

In addition, it is advantageous to use a pipe including a heat insulating material that can lower the heat exchange efficiency between the inside and the outside of the pipe used for the heat storage pipe.

Meanwhile, the excavation step (S600) is the same as the excavation step (S100) of the first embodiment of the heat exchange system construction method according to the present invention described above, and the heat storage pipe manufactured in the heat storage pipe manufacturing step (S500) It is possible to excavate the passion with the width.

Meanwhile, the inserting step (S700) may be a step of inserting the heat storage pipe into the inside of the passageway formed in the excavation step described above until the lower part of the passageway.

At this time, the inserting step (S700) can be inserted into the inside of the paper heat pipe while extending the length by connecting a plurality of heat storage pipes.

In addition, the inserted heat storage pipe maintains a gap between the pipe and the dead space through a plurality of heat storage members coupled to the side surface of the pipe, so that the heat storage pipe can be provided at the center of the heat storage pipe.

It may be advantageous that the lower end of the heat storage pipe is spaced apart from the lower surface of the pipe by a predetermined distance so that the heat transfer medium injected to the outside of the pipe can flow into the inside of the pipe.

Also, after inserting the heat storage pipe up to a predetermined depth below the geothermal heat, the pipe without the heat storage material may be connected to extend the pipe to the ground of the geothermal heat.

That is, a heat storage pipe is connected to a part of the lower part of the heat-insulating pipe, and a general pipe is connected to the upper part of the heat storage pipe.

In the geothermal heat exchanging system formed through such a process, the heat transfer medium is injected through the space between the pipes and the space between the pipes, and the heat transfer medium heated from the bottom of the passageway can be recovered through the interior of the pipe.

At this time, turbulence is generated in the course of the heat transfer medium flowing to the lower part of the geothermal column 100, so that the amount of heat that the heat transfer medium recovers in the geothermal column 100 can be maximized.

In addition, the heat transfer medium receives geothermal heat through the inner circumferential surface of the geothermal heat source 100 and can receive the heat of the heat storage unit 510 heated by the geothermal heat, so that the heat capacity and the heat transfer coefficient Can be greatly increased.

Accordingly, the total amount of heat transferred to the heat transfer medium is greatly increased, so that more geothermal heat can be recovered and the efficiency of the geothermal heat exchange system can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is self-evident to those of ordinary skill in the art. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

100: Passion
200: pipe
300, 400, 500:

Claims (15)

Geo - Jeong Jeong formed by excavating the ground;
A pipe extending from the ground to a lower portion of the geothermal column and disposed inside the geothermal column and spaced apart from the inner circumferential surface of the geothermal column; And
A heat storage unit provided with the heat storage medium in the space between the pipes and between the pipes and through which the heat transfer medium for the geothermal heat recovery passes;
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Wherein the pipe includes a heat insulating portion for lowering heat exchange efficiency between the inside and the outside of the pipe,
The heat-
Wherein the heat resistance of the upper portion of the heat insulating portion is formed to be relatively larger than the thermal resistance of the lower portion of the heat insulating portion. The method according to claim 1,
The heat storage unit
Wherein a plurality of heat storage materials having a predetermined volume are formed in the space between the geotechnical column and the pipes. The method according to claim 1,
The heat storage unit
Wherein the heat transfer medium is provided with a porous heat storage material, and the heat transfer medium is permeated through the gap of the heat storage portion. The method according to claim 1,
The heat storage unit
Wherein a plurality of heat storage materials are formed to be coupled to the outer peripheral surface of the pipe so as to protrude therefrom. 5. The method of claim 4,
The heat storage material
Wherein the heat storage material has a predetermined area on an upper surface of the heat storage material. 5. The method of claim 4,
The heat storage unit
And which protrudes from the pipe to the same length. delete delete The method according to claim 1,
The heat storage unit
Wherein the heat exchanger is provided up to a predetermined depth below the heat rejecting passage. The method according to claim 1,
The pipe
Wherein a diameter of the outer circumferential surface of the pipe is larger than a diameter of the outer circumferential surface of the pipe. An excavating step of excavating the ground with a predetermined diameter to form a ground passage;
An inserting step of inserting the pipe including the heat insulating part formed in the excavating step into a lower portion of the geothermal column, wherein the heat insulating part is formed such that the upper heat resistance is relatively larger than the lower heat resistance; And
A charging step of charging a heat storage material into the inner circumferential surface of the tribo package and the space between the pipes;
Wherein the heat exchange system comprises a heat exchanger. 12. The method of claim 11,
Between the excavation step and the inserting step,
And a charging step of charging the heat storage material with a predetermined thickness at a lower end portion of the tile heat retaining column. 12. The method of claim 11,
In the charging step,
Wherein the heat storage material is filled up to a predetermined depth below the heat storage fin. A heat storage pipe manufacturing step of manufacturing a heat storage pipe by combining the pipe and the heat storage material in such a manner that a plurality of heat storage materials protrude from an outer circumferential surface of the pipe including a heat insulation part having an upper heat resistance relatively larger than a lower heat resistance;
An excavating step of excavating the ground heat pipe at a diameter at which the heat storage pipe can be inserted into the ground; And
An inserting step of inserting the heat accumulating pipe into the inside of the retaining pipe formed in the excavating step to a lower portion of the retaining pipe;
Wherein the heat exchange system comprises a heat exchanger. 15. The method of claim 14,
In the inserting step,
Wherein the heat storage pipe is inserted to a predetermined lower depth of the geothermal heat pipe and the pipe not connected to the heat storage material is connected to an upper portion of the heat storage pipe to extend to the ground.

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