KR101765386B1 - A geothermal pipe - Google Patents

A geothermal pipe Download PDF

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Publication number
KR101765386B1
KR101765386B1 KR1020150082332A KR20150082332A KR101765386B1 KR 101765386 B1 KR101765386 B1 KR 101765386B1 KR 1020150082332 A KR1020150082332 A KR 1020150082332A KR 20150082332 A KR20150082332 A KR 20150082332A KR 101765386 B1 KR101765386 B1 KR 101765386B1
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South Korea
Prior art keywords
pipe
heat medium
heat
elliptical
pipes
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KR1020150082332A
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Korean (ko)
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KR20160145941A (en
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최원복
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최원복
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    • F24J3/08—
    • F24J3/085—
    • F24J2003/087—
    • 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

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Abstract

An object of the present invention is to minimize the distance between a center of a circulating heat medium and an outer surface of a pipe, thereby maximizing heat absorption efficiency by uniform heat transfer between the heat medium and air.
That is, the present invention is characterized in that, in the geothermal pipe, two elliptical heat medium pipes having a long round cross section and a pipe connecting portion for fastening the two elliptical heat medium pipes are fastened.
Therefore, according to the present invention, the geothermal pipe is composed of the two elliptical heat medium pipes separated by the pipe connecting portion, the distance from the center of the circulating heat medium to the pipe outer surface is minimized, and the heat medium is uniformly heat- The geothermal endothermic effect is maximized.

Description

A geothermal pipe

The present invention relates to a geothermal pipe, and more particularly, to a geothermal pipe which comprises two elliptical heat medium pipes having a long round cross section and a pipe coupling section for separating the two elliptical heat medium pipes from each other, To minimize the distance between the pipe and the outer surface of the pipe, thereby maximizing the heat absorbing efficiency by uniform heat transfer between the heat medium and the air.

Another object of the present invention is to minimize the heat loss by minimizing the heat exchange between the two elliptical heat medium pipes by overlapping the two elliptical heat medium pipes in a length of ½ or less of the major axis length in the major axis direction It is.

It is another object of the present invention to provide a metal thermal conductor inserted in a elliptical heat medium pipe so as to increase the heat absorbing efficiency and the strength of the elliptical heat medium pipe.

It is a further object of the present invention to provide an oilless heat pipe having a long axial length of the middle oval heat medium pipe and a long axial length of the long oval heat medium pipe of the two oval heat medium pipes, In order to maximize the efficiency of the system.

Another object of the present invention is to provide an endothermic heat pipe that forms an endothermic projection on the outer side of the inlet side elliptical heat medium pipe, wherein the endothermic projection is formed from a portion 5 m or less from the upper end of the inlet side elliptic heat medium pipe, And the outflow side elliptical heat medium pipe is provided with a heat absorbing and maintaining heat insulating portion from the upper end to the middle portion so as to prevent heat loss by the heat medium of the intake side elliptical heat medium pipe, And to maximize the geothermal geothermal endothermic effect by preventing loss.

Generally, geothermal heat allows the use of energy from a stratum of heat sources that maintain a constant temperature of 10-20 ° C throughout the year.

The above-mentioned geothermal heat is generated by drilling the geothermal absorption bore at 130-150 m in the ground, inserting the geothermal pipe circulating the heating medium in the geothermal absorption bore, grouting the geothermal absorption bore, To be able to utilize.

The geothermal pipe as described above is constituted by two heat medium pipes so that the heat medium can be independently obtained and discharged, and is connected by the "U-shaped pipe" provided at the end of the two heat medium pipes.

In the geothermal pipe constructed as described above, the heating medium is received by one heating medium pipe of the two heating medium pipes, gradually absorbing the geothermal heat, and then the heating medium absorbing the geothermal heat is discharged through the other heating medium pipe.

However, since the two heat medium pipes constituting the conventional geothermal pipe are formed of a tube that forms a true origin, the heat medium flowing through the inside of the heat medium pipe is not uniformly heat-exchanged as a whole.

In addition, in the conventional geothermal pipe, there is a problem that the heating medium of the outgoing heating medium pipe sucks heat to the receiving heat medium pipe, and an endothermic loss occurs.

Patent No. 10-1044737

Accordingly, since the heat medium pipe of the conventional geothermal pipe is formed of a tube body, the heat medium flowing through the inside of the heat medium pipe is not uniformly heat-exchanged as a whole and the heat efficiency is lowered. Thereby solving the problem that endothermic heat is absorbed by the heat medium pipe.

That is, the present invention is characterized in that, in the geothermal pipe, two elliptical heat medium pipes having a long round cross section and a pipe connecting portion for fastening the two elliptical heat medium pipes are fastened.

Further, the present invention is characterized in that two elliptical heat medium pipes are overlapped and bound in a length of ½ or less of the major axis length in the major axis direction.

Further, the present invention is characterized in that the elliptical heat medium pipe is provided with a spiral-inserted metal thermal conductor.

Further, the present invention is characterized in that the length of the long axis of the elliptical heat medium pipe of the center of the two elliptical heat medium pipes is longer than the length of the long axis of the inlet side elliptical heat medium pipe.

The heat absorbing protrusions are formed on the outer side of the inlet-side elliptical heat transfer medium pipe at a distance of not more than 5 m from the upper end of the inlet-side elliptical heat transfer medium pipe. Up to 5 m from the upper end of the inlet- And the outflow side elliptical heat transfer pipe is formed with a heat absorbing and maintaining heat insulating portion from the upper end to the central portion so as to prevent heat loss by the heat medium of the inlet side elliptical heat transfer pipe.

Therefore, according to the present invention, the geothermal pipe is composed of two elliptical heat medium pipes separated from each other by a pipe connecting part and having a long round cross section, the distance from the center of the circulating heat medium to the pipe outer surface is minimized, Endothermic heat absorption effect is maximized.

In addition, the two elliptical heat medium pipes are overlapped and bound in a length equal to or less than 1/2 of the major axis length in the major axis direction, thereby minimizing endothermic loss due to heat exchange between the heat mediums of the two elliptical heat medium pipes.

In addition, by providing the metal heat conductor inserted with the spiral in the elliptical heat medium pipe, the heat absorption efficiency and strength of the elliptical heat medium pipe are improved.

In addition, by forming the long-axis length of the elliptical heat medium pipe of the middle of the two elliptical heat medium pipes to be larger than the long axis length of the elliptical heat medium pipe of the inlet side, the residence time of the heat medium in the elliptical heat medium pipe of the outgoing side is increased, .

A heat absorbing protrusion is formed on the outer side of the inlet-side elliptical heat medium pipe, wherein the heat absorbing protrusion is formed from a portion of 5 m or less from the upper end of the inlet-side elliptical heat medium pipe, And the outflow side elliptical heat medium pipe is provided with a heat absorbing heat insulating portion from the upper end to the middle portion so as to prevent heat loss by the heat medium of the intake side elliptical heat medium pipe, And the heat loss of the heating medium of the elliptical heat transfer pipe on the outgoing side is prevented, thereby maximizing the effect of the geothermal heat absorption.

1 is an exemplary view showing an embodiment according to the present invention.
2 is an exemplary diagram illustrating another embodiment according to the present invention.
3 is an exemplary diagram illustrating another embodiment of the present invention.
4 is a view showing another example of construction according to another embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention maximizes the geothermal heat absorbing efficiency of the heat medium circulated in the heat medium pipe.

That is, according to the present invention, there are provided two heat medium pipes 10 each having a length of 130 to 150 m so as to be independently obtained and to be taken out, and a "U-shaped pipe" provided at the end of the two heat medium pipes 10 A geothermal pipe comprising two elliptical heat medium pipes (10) formed of a belt-like pipe having a section of a long-distance circle having a major axis and a minor axis diameter, and a pipe connecting part (10) connecting the two elliptical heat medium pipes (20).
The pipe coupling portion 20 is bound to the outer surface on the short axis side of the elliptical heat medium pipe 10.

Here, the elliptical heat medium pipe 10 is formed such that the short axis length is 20 to 50% of the length of the long axis portion.

If the length of the short axis portion is 20% or less of the length of the long axis portion, the flow width of the heat medium is narrow, causing flow friction, and the flow of heat medium is not smooth.

If the length of the short axis is longer than 50% of the length of the long axis portion, the amount of heat absorbed by the heat medium in the central portion of the elliptical heat medium pipe 10 and the heat medium on the inner wall side of the elliptical heat medium pipe 10 is large, There is a problem that the geothermal heat absorption efficiency of the geothermal heat is lowered.

Therefore, it is preferable that the elliptical heat medium pipe 10 has a short axis length of 20 to 50% of the length of the long axis.

According to another embodiment of the present invention, the pipe connecting unit 20 may be constructed so that the heating medium circulated through the inlet-side elliptical heating medium pipe 10 and the heating-side elliptical heating medium pipe 10 are not heat- The two elliptical heat medium pipes 10 to be joined are bound together by mutually staggering their longitudinal axes in the major axis direction so that they can be overlapped with each other with a length equal to or less than 1/2 of the major axis length.

In another embodiment, the present invention can be implemented by providing a metal thermal conductor (11) inserted into a elliptical heat medium pipe (10) so that the geothermal heat in the geothermal heat absorbing hole (30) It is.

In another embodiment of the present invention, in order to smoothly absorb the geothermal heat in the geothermal heat absorbing hole 30, it is possible to increase the residence time of the heating medium and to reduce the pressure, The length of the major axis of the elliptical heat medium pipe 10 may be longer than the length of the long side of the inlet side elliptical heat medium pipe 10.

In another embodiment of the present invention, in order to efficiently transfer a heat source to the heat medium circulated through the elliptical heat medium pipe 10 in the geothermal heat absorbing hole 30, the heat absorbing protrusions 12 ) Can be formed.

On the other hand, the heat absorbing protrusions 12 are formed on the upper side of the elliptical heat medium pipe 10 on the ground side where the geothermal heat is kept constant from the bottom of the inlet side elliptical heat medium pipe 10 to prevent heat loss of circulating heat medium And the heat medium insulating portion 13 may be formed on the outer surface of the inlet-side elliptical heat medium pipe 10 up to 5 m from the upper end thereof.

The elliptical heat medium pipe 10 on the outgoing side is designed to prevent the heat loss of the heat medium sufficiently absorbing the geothermal heat from the ground side at a relatively low geothermal temperature and to prevent the heat loss due to the heat medium of the ingress side elliptical heat medium pipe 10 The heat absorbing and heat insulating portion 14 can be formed from the upper end to the central portion.

Hereinafter, the application process of the present invention will be described.

As described above, in the geothermal pipe, two elliptical heat medium pipes 10 and two elliptical heat medium pipes 10, which are formed of a belt-shaped tubular body having a cross section of a long circle having a major axis and a minor axis, (20); When the pipe binding portion 20 is applied to the outer surface of the short axis side of the elliptical heat medium pipe 10, the heating medium at the center of the elliptic heat medium pipe 10 and the heating medium at the inner wall side of the elliptical heat medium pipe 10 The endothermic heat transfer is achieved by uniformly heating the heat medium as a whole.

On the other hand, in the practice of the present invention, the two elliptical heat medium pipes 10 are overlapped to each other with a length equal to or shorter than 1/2 of the major axis length, and the heat exchange between the heat mediums of the two elliptical heat medium pipes 10 So that the endothermic loss is minimized.

In addition, in the practice of the present invention, when the elliptical heat pipe 10 is provided with the metal thermal conductor 11 inserted in a spiral shape, the thermal conductivity of the elliptical heat pipe 10 is improved, The strength of the elliptical heat medium pipe 10 is improved by the metal thermal conductor 11.

In the embodiment of the present invention, when the long axis length of the middle oval heat medium pipe 10 of the two elliptical heat medium pipes 10 is formed to be longer than the long axial length of the inlet side elliptical heat medium pipe 10 , The heating medium flow rate is reduced in the elliptical heating medium pipe 10 on the outgoing side, the retention time is increased, the pressure is lowered, the heat absorbing efficiency is increased, and the heat absorbing efficiency is maximized.

In the embodiment of the present invention, the heat absorbing protrusions 12 are formed outside the inlet-side elliptical heat transfer pipe 10, and the heat absorbing protrusions 12 are formed at the upper end of the inlet-side elliptical heat transferring pipe 10 at 5 m or less And heat medium loss at the freezing depth of the ground surface is prevented by forming the heat medium insulating section 13 on the outer surface up to 5 m from the upper end of the water inlet side elliptical heat pipe 10, The effect of absorbing the geothermal energy is maximized.

On the other hand, in the practice of the present invention, the elliptical heating medium pipe 10 on the outgoing side is formed by forming a heat absorbing and heat insulating portion 14 from the upper end to the central portion so as to prevent heat loss by the heating medium of the intake elliptical heat transferring pipe 10 , The heat of the heating medium of the outflow side elliptical heating medium pipe 10 on the ground side where the geothermal heat is rapidly lowered is prevented, and the effect of the geothermal heat absorption is maximized.

10: Heat pipe
11: metal thermal conductor 12: endothermic projection
13: heat medium insulating portion 14: heat absorbing and maintaining insulating portion
20: pipe coupling part
30: Geothermal absorption ball

Claims (4)

For geothermal pipes;
Two elliptical heat medium pipes 10 formed of a belt-shaped tubular body having a section of a long circle having a major axis and a minor axis diameter and a pipe binding section 20 for separating the two elliptical heat medium pipes 10 from each other Being;
The pipe coupling portion 20 is bound to the outer surface on the short axis side of the elliptical heat medium pipe 10;
The two elliptical heat medium pipes 10 bounded by the pipe coupling part 20 are bound together with their major axes shifted from each other in the major axis direction and bound to each other with a length equal to or less than 1/2 of the major axis length;
The longitudinal length of the elliptical heat transfer medium pipe 10 of the two elliptical heat transfer pipes 10 is larger than the longitudinal length of the inlet side elliptical heat transfer medium pipe 10;
The heat absorbing protrusions 12 are formed on the outer side of the inlet side elliptical heat medium pipe 10 such that the heat absorbing protrusions 12 are formed at a distance of 5 m or less from the upper end of the inlet side elliptical heat medium pipe 10, A heat medium heat insulating portion 13 is formed on an outer surface of the pipe 10 at a distance of 5 m from the upper end of the pipe 10 and the outflow side elliptical heat medium pipe 10 is provided at a central portion To form a heat absorbing and maintaining heat insulating portion (14);
And a metal thermal conductor (11) spirally inserted into the elliptical heat medium pipe (10). delete delete delete
KR1020150082332A 2015-06-11 2015-06-11 A geothermal pipe KR101765386B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150082332A KR101765386B1 (en) 2015-06-11 2015-06-11 A geothermal pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150082332A KR101765386B1 (en) 2015-06-11 2015-06-11 A geothermal pipe

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KR20160145941A KR20160145941A (en) 2016-12-21
KR101765386B1 true KR101765386B1 (en) 2017-08-23

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200328146Y1 (en) * 2003-07-15 2003-09-26 영 식 김 Earth heat exchanger
JP2006200848A (en) * 2005-01-21 2006-08-03 Kimura Kohki Co Ltd Pipe for underground heat exchange
KR101044737B1 (en) * 2010-12-10 2011-06-28 최재호 Heat transfer pipe for ground heat exchanger
KR101462251B1 (en) * 2013-10-08 2014-11-20 서울시립대학교 산학협력단 Underground Heat Exchange System

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200328146Y1 (en) * 2003-07-15 2003-09-26 영 식 김 Earth heat exchanger
JP2006200848A (en) * 2005-01-21 2006-08-03 Kimura Kohki Co Ltd Pipe for underground heat exchange
KR101044737B1 (en) * 2010-12-10 2011-06-28 최재호 Heat transfer pipe for ground heat exchanger
KR101462251B1 (en) * 2013-10-08 2014-11-20 서울시립대학교 산학협력단 Underground Heat Exchange System

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