KR101559738B1 - Using a geothermal heating system - Google Patents

Abstract

The present invention uses geothermal heat to enhance the absorption and preservation residual power of geothermal heat by using heat storage tank of convection type and conduction type while increasing the heat absorption power and thermal storage power by metal oxide powder while using forced and natural circulation system And more particularly to a heat storage tank for filling a filler material having a thermal coating layer formed on its surface to be installed in a rock layer, and an inlet and an outlet for the heat storage tank, respectively, And a return pipe and a heating pipe connected to the circulation pump so that the charged heat medium oil flows. The forced circulation method and the natural circulation method are used to improve the circulation power and to increase the thermal efficiency by using the metal oxide powder, thereby increasing the rate of heat rise due to the same temperature.

Description

Using a geothermal heating system

The present invention relates to a geothermal heating system, and more particularly, to a geothermal heating system that uses a forced circulation system and a natural circulation system to increase heat absorbing power and heat retention capability by metal oxide powder, The present invention relates to a heating system used.

In general, it is almost the same as early summer if you go down 5m below the ground even in the middle of the cold winter. The geothermal heat accumulated in the summer has not yet been released. With the same principle, the underground is cooler in summer.

According to the Korea Meteorological Administration (KMA), it is reported that the temperature of the geothermal heat is close to the early summer when the temperature is below about 16 ℃.

In order to utilize the geothermal energy, a wide range of natural energy utilization methods have been attempted from land to small-scale heating to large-scale power generation using a heat of 150 ° C or more by piercing a few kilometers from underground.

In other words, in order to cope with high oil prices, the construction industry is actively developing alternate energy that can replace oil or natural gas as an energy source used for heating and cooling. Among these alternative energy sources, technologies that can be applied to air-conditioning and heating systems using wind power, solar heat, and geothermal power with infinite energy sources are being studied. These energy resources have little effect on air pollution and climate change. There is a disadvantage in that the energy density is low.

In order to obtain wind energy and solar energy among natural energy, it is necessary to secure a large area together with the limitation of the installation place. Since these devices have low energy production and high cost for installation and maintenance, they are applied to the air- There is a limit.

However, because geothermal energy is relatively inexpensive to install and maintain, many cooling and heating systems using geothermal heat as a heat source have been proposed.

For example, Japanese Patent Laid-Open No. 10-2004-0045780 discloses a geothermal heat exchanger installation method and installation structure, and a pile heating / cooling system using geothermal heat of Japanese Patent Application Laid-Open No. 10-2004-0055951.

1 and 2, a geothermal heat exchanger having two free ends and having a coil-shaped heat transfer fluid is installed in a probe hole Grouting is carried out in order to prevent soil infiltration and inflow of aquifer into the aquifer, and one of the two free ends of the geothermal exchanger is connected to a heat pump to recover the heat source in the ground and perform cooling or heating of each household Is disclosed. Since the geothermal heat exchanger is installed in one exploration hole, the construction site and the construction cost can be minimized, and the geothermal exchanger is formed into a coil shape, thereby maximizing the heat efficiency by increasing the time during which the heat transfer fluid stays in the ground.

However, the above structure requires securing of sufficient ground to drill the exploration well, and the excavation cost of the exploration well is high, and the bentonite or concrete that is filled after installing the geothermal heat exchanger inside the exploration well, The ash has low thermal conductivity and it is difficult to efficiently recover the geothermal heat and is not commercialized.

As another conventional art, a closed type heat exchange structure using a geothermal heat source forms a plurality of geothermal holes perpendicular to the ground, and a U-shaped heat recovery pipe is buried in the geothermal cavity. A heat exchanger such as a heat pump is installed in the building to cool or heat the inside of the building by using the heat of the heat recovery pipe.

A circulating fluid supply pipe is connected to the outlet of the heat recovery pipe and the heat exchanger, and a circulating fluid return pipe is connected to the inlet of the heat exchanger and the heat recovery pipe. Therefore, the circulating fluid thermally recovered from the heat recovery pipe is supplied to the heat exchanger through the circulating fluid supply pipe, and the circulating fluid passing through the heat exchanger is recovered to the heat recovery pipe through the circulating fluid return pipe, and then the heat is recovered.

However, in the conventional closed heat exchanger using the geothermal heat, the circulating fluid that has passed through the heat exchanger rapidly passes through the straight-type return pipe, and then quickly enters the geothermal cavity. Therefore, since the circulating fluid having a large difference in temperature passing through the heat exchanger is rapidly injected into the tail hole, the heat recovery ability in the tail hole is gradually reduced. That is, since the circulating fluid having a large temperature difference passed through the heat exchanger is rapidly injected into the tearing hole, the temperature in the tearing hole gradually increases in the summer and the temperature in the tearing hole gradually decreases in the winter season, resulting in a gradual decrease in the thermal efficiency.

However, in the conventional heating system using geothermal heat, the heat medium oil is mostly heated by the convection heat of the geothermal heat due to the use of air.

In addition, when filling a tank-like filler in a tank installed in the ground, the surface heat retention force is small and the surface heat is easily scattered. Since the heat is heated only by the stone, there is a problem that the temperature change due to the change of the geothermal heat is severely generated.

Therefore, a heating system using geothermal heat, which improves the heat retention ability by using the convection system and the conduction system, is required to shorten the heating time and the cooling time by mixing the metal oxide powder into the thermal oil.

1. Registration No. 10-0949816 (Fluid circulation device and heat recovery pipe and heat recovery pipe construction method of closed geothermal system) 2. JP-A-2013-228155 3. Publication No. 10-2009-0108795 (Underground heat exchange system and its construction method) 4. Publication No. 10-2004-0045780 (Installation method and installation structure of geothermal exchanger) 5. JP-A-2013-211883

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a heating system using geothermal heat, which increases circulation power by using a forced circulation system and a natural circulation system, And the like.

Another object of the present invention is to prevent the contamination of the environment by filling the filler into the heat storage tank and filling it in the ground.

In addition, another object of the present invention is to provide a heat storage tank in which the space and the partition plate function as a partitioning function of the filler material, the heat medium oil is circulated irregularly in various directions to increase the accumulation time and increase the contact area and recovery, To increase.

Another object of the present invention is to enhance thermal retention and heating efficiency by using a combination of a thermal flow and a conduction function.

In order to accomplish the above object, the present invention provides a system for heating by using geothermal heat, the system being installed in a rock layer positioned below a soft layer of a ground, wherein an inlet is formed at one side of the upper part, The heat storage tank is filled with a filling material having a thermal coating layer formed on the surface thereof, and the inlet of the heat storage tank is filled with heat medium oil by the operation of the circulation pump so that the heating function is completed and reheated And a heat pipe through which the heated heat medium oil is exhausted for heating is connected to the exhaust port of the heat storage tank and flows through the inside of the heat storage tank and the return pipe and the exhaust pipe The metal oxide powder is injected into the thermal oil, and the height difference between the inlet and the outlet of the heat storage tank Because increasing the cycle efficiency due to the operation of the circulating pump and heating updraft to and provides a heating system with a geothermal characterized in that configured to increase the heating efficiency by the thermal coating layer and the metal oxide powder.

As described above, the present invention has an effect of improving the circulation power by using the forced circulation method and the natural circulation method and increasing the convection or conduction thermal efficiency by using the metal oxide powder, thereby increasing the rate of heat rise by the same temperature.

The filling material is filled in the heat storage tank and buried in the ground, so that the environment is not contaminated and the replacement is easy.

In addition, there is an effect that the heat medium oil is circulated irregularly in various directions by the partition function of the voids and the partition plate of the filler material in the heat storage tank so that the contact time and recovery are increased and the heat rise efficiency per area is increased .

In addition, there is an effect that heat conservation power and heating efficiency can be increased by using a combination of a tropical stream and a conduction function.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a heating system using geothermal heat according to the present invention;
2 is a plan sectional view showing a heat storage tank according to the present invention,
FIG. 3 is a conceptual diagram illustrating the filling of a filler into an aluminum net according to the present invention,
FIG. 4 is a plan view of a filling space of a heat storage tank according to the present invention,
5 is a cross-sectional view taken along line AA of FIG. 4,
6 is a plan view showing a linear partition plate, FIG. 6 (b) is a plan view showing a curved partition plate, FIG. 7 (c) is a plan view showing a bent partition plate,
FIG. 7 is a view showing another embodiment of the present invention in which a liquid heating portion is provided in a lower portion of a heat storage tank,
8 is a plan sectional view of another embodiment in which a liquid conduction portion is formed in a convection space of a heat storage tank according to the present invention,
9 is a perspective view of the liquid conductive portion,
10 is a heat medium oil flow chart showing a process of heating a cooled heat medium oil on a flat cross-sectional view showing a heat storage tank according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

As shown in FIGS. 1 to 9, the heating system using geothermal heat of the present invention is a system for heating by using geothermal heat. The system includes a filler material 20 having a thermal coating layer 21 formed thereon, A heat storage tank 10 installed in the heat storage tank 10 and an exhaust port 12 connected to the heat storage tank 10 and a heating medium oil in which the metal oxide powder 60 is inserted to perform a heating function The geothermal heating system 100 is constructed by the recovery pipe 30 and the heating pipe 40 to which the circulation pump 31 is connected.

The thermal storage tank 10 of the geothermal heating system 100 is installed in a rock layer 202 located under the soft layer 201 of the ground 200. An inlet 11 is formed at one side of the thermal storage tank 10 And an exhaust port 12 is formed on one side of the opposite side.

At this time, it is preferable that the heat storage tank 10 is made of an aluminum alloy or a stainless steel alloy which does not cause oxidation or corrosion even in the state of being installed in the rock layer 202.

The heat storage tank 10 is formed in an inclined rectangular parallelepiped shape in which the end of the heat storage tank 10 at which the inlet port 11 is formed is low and the end of the exhaust port 12 is located at a high height. The inclination angle of the height is in the range of 10 to 20 degrees.

That is, the inlet port 11 and the outlet port 12 are formed to have a height difference by adopting the Bernoulli equation, and the temperature difference between the inlet port 11 and the outlet port 12 is used to separate the heat storage tank 10, So that the heated thermal fluid can be quickly exhausted through the exhaust port 12.

The heat storage tank 10 is partitioned into a plurality of sections along the transverse direction between the inlet 11 and the outlet 12 in the internal space of the heat storage tank 10 so that the heat medium oil flows And is formed in a zigzag shape to form a filling space 16 for filling the filler 20.

One end of the partition plate 15 is connected to the inner surface of the heat storage tank 10 and the other end of the partition plate 15 is cut so as not to be connected to the inner surface of the heat storage tank 10.

At this time, the cutting end 15 'side of the partition plate 15 is inclined toward the side where the exhaust port 12 is formed.

That is, when the heat storage tank 10 is projected in a vertical section, the inlet 11 and the outlet 12 are formed in a quadrangular shape with a low inlet port 11 and a high outlet port 12, , The bottom surface of the rock layer 202 and the bottom surface of the heat storage tank 10 are inclined in a range of about 10 to 20 degrees.

When the heat storage tank 10 is projected on a flat surface, the inlet 11 and the exhaust 12 are arranged in a diagonal direction with respect to each other, and the partition plate 15 has an inlet 11 formed therein. The first partition plate 15 is inclined so that the cutting end 15 'is directed to the exhaust port 12 and is connected to the inner surface of one side of the heat storage tank 10, The second partition plate 15 is connected to the inner surface of the heat storage tank 10 so that the third partition plate 15 is inclined and spaced away from the second partition plate 15 in a direction opposite to the second partition plate 15, And one end of the fourth partition plate 15 is connected to the inner surface of the heat storage tank 10 so as to be inclined in a direction opposite to the third partition plate 15, It is connected to the inside.

That is, the partition plate 15 is constituted by the first to fourth partition plates 15a, 15b, 15c and 15d according to the present invention, and the first to fourth partition plates 15a, 15b and 15c The cut end 15 'of the partition plate 15d is not connected to the inner surface of the heat storage tank 10 but is spaced apart and the number of the partition plates 15 may be changed as needed.

As shown in FIG. 6, the partition plate 15 is formed in one of a straight shape (a) and a curved shape (b) or a bent shape (c) The area of flow and the number of refractions are increased, so that it absorbs more heat and is heated to a higher temperature as compared with the case where the same section is passed.

Meanwhile, a filler 20 having a thermal coating layer 21 formed on its surface is filled in the heat storage tank 10.

The filling material 20 is filled in the aluminum net 22 to fill the filling space 16 formed by the dividing plate 15 and the dividing plate 15 so that the cutting end 15 ' A convection space 17 in which the filler 20 is not filled is formed.

At this time, the aluminum net 22 filled with the filler 20 is formed by using a net made of aluminum having a high heat conductivity and filling the filler 20 with the heat storage tank 10 easily.

In another embodiment, the heat storage tank 10 may include a liquid phase heating body 14 having a liquid phase heat medium oil 13 therein. The liquid phase heat medium oil 13 may include a phenyl ether, An alkane, and an alkaline benzene.

The liquid heating unit 14 includes a liquid thermal storage tank 13a that is integrally connected to a lower surface of the thermal storage tank 10. The liquid heating unit 14 contains liquid thermal oil 13, And the lower surface of the heat storage tank 10 is heated when the liquid thermal oil 13 is conducted by being transferred to the liquid thermal storage tank 13a.

In another embodiment, the convection space 17, which is the remainder of the filling space 16 of the heat storage tank 10 filled with the filler 20, is provided with a liquid phase heat medium oil 13 in which the metal oxide powder 60 is mixed So that the liquid conduction portion 50 is inserted.

A heat exchange perforated plate 51 is formed on the outer surface of the liquid storage tank 52 of the liquid conduction part 50 facing toward the center of the heat storage tank 10 and formed with a plurality of perforations 51a along the longitudinal direction. The heat exchange perforated plate 51 is formed in an inclined form in which a plate shape is gathered toward the exhaust port 12 along the longitudinal direction of the liquid heat storage tank 52, Exchanged perforated plate 51 while flowing along the partition plate 15 and the filler 20, and is further heated and flows at a high speed.

The size of the liquid heat storage tank 52 of the liquid conduction part 50 is a trapezoidal shape that can be inserted into the convection space 17 and one end of the liquid heat storage tank 52 is in close contact with the inner surface of the heat storage tank 10, Exchanged perforated plate 51. The liquid heat storage tank 52 is made of a material such as a bolt or a welding method so as not to move in the convection space 17 due to the characteristics of the inclined heat storage tank 10, To the heat storage tank 10 as shown in FIG.

The thermal coating layer 21 of the filler 20 is coated on the surface of the filler 20 by mixing the metal oxide powder 60 with an acrylic or silicone type solvent and the metal oxide is mixed with an acrylic or silicone- And then applied to the surface of the filler 20 made of soybean gravel or crushed stone, followed by drying at a high temperature.

At this time, it is preferable that the acrylic or silicone-based solvent is made transparent, and it may be ductile or rigid.

Meanwhile, the inlet 11 of the heat storage tank 10 is formed with a return pipe 30 through which the heating fluid, which may be formed of air or liquid, flows into the inlet 11 of the heat storage tank 10 by the operation of the circulation pump 31, However, it is preferable that the recovery pipe 30 is formed in a zigzag shape so as to sufficiently absorb the geothermal heat of the rock layer 202.

The heating pipe 40 is connected to the exhaust port 12 of the heat storage tank 10 through a space between the filler 20 and the heated heating oil is exhausted for heating.

The metal oxide powder 60 is injected into the heat storage tank 10 and the heat medium flowing through the recovery pipe 30 and the heating pipe 40.

At this time, the metal oxide powder 60 mixed with the heat medium oil, the thermal coating layer 21 and the liquid conductive portion 50 of the recovery pipe 30 and the heating pipe 40 may be tungsten (W), molybdenum (Mo) among them, antimony (Sb), cesium (Cs), rubidium (Rb), vanadium (V), strontium (Sr), niobium (Nb), chromium (Cr), indium (in ₂ O _3), tin (Sn) The selected one or two or more metal oxide powders are mixed so as to improve the thermal conductivity or the thermal conductivity.

The particle diameter of the metal oxide powder 60 may be preferably in the range of 30 to 50 mu m.

That is, the geothermal heating system 100 increases the circulation efficiency due to the operation of the circulation pump 31 and the heat rising air flow due to the height difference between the inlet 11 and the exhaust port 12 of the heat storage tank 10, And the heating efficiency is increased by the coating layer 21 and the metal oxide powder 60.

The operation and effect of the present invention constructed as described above will be described below.

1 to 9, in order to construct the geothermal heating system 100, the thermal storage tank 10 may be inserted into the rock layer 202 through the soft layer 201 to a depth of about 4 to 5M Excavate to an area of.

The filling material 20 made of soybean gravel, crushed stone, or the like having the thermal coating layer 21 formed on the aluminum net 22 is filled in the filling space 16 of the heat storage tank 10 and then installed.

Thereafter, the return pipe 30 is connected to the inlet 11 of the heat storage tank 10, and the heating pipe 40 is connected to the exhaust port 12, Construction.

When the thermal storage tank 10 is installed in the construction space 203 of the rock layer 202, the rock layer 202 is backfilled with the rock residue that was generated when the rock layer was crushed and the soft layer 201 and the rock layer A sealing sheet 204 for preventing the moisture of the soft layer 201 from flowing into the rock layer 202 is applied to the boundary of the rock layer 202.

Then, the gravel layer 201 is backed up to the upper part of the sealing sheet 204, and then the gravel layer 201 is applied.

Next, the circulation pump 31 is connected to the return pipe 30 and the heating pipe 40 is connected to the circulation pump 31. The heating pipe 40 is installed for heating the house, The heat insulating material 41 is wrapped around the tube 30 and the heating tube 40 to prevent the tube from being cooled when passing through the soft layer 201 having a small influence of the geothermal heat.

The metal oxide powder 60 of about 5 to 10 g per 1 M is fed into the heat medium oil to be heated by the geothermal heating The construction of the system 100 is completed.

In the geothermal heating system 100, when the circulation pump 31 is operated, the heat medium oil mixed with the metal oxide powder 60 flows along the recovery pipe 30 and then flows into the heat storage tank 10 The heat medium oil flows through the inlet port 11 through the gap created between the filler material 20 made of soybean gravel or crushed stone and the filler material 20 contained in the aluminum net 22. [

At this time, the heat medium oil contacts the filler 20 of the heat storage tank 10 heated by the geothermal heat of the rock layer 202, passes through the diffused diffused flow along the gap, and is contacted with the heated filler 20, Mixed with the internal air of the heat storage tank (10), and flows while being heated.

The heat medium oil flows through the partition plate 15 as well as the voids of the filler material 20 and flows through the convection space 17 as a remaining space in which the filler material 20 is installed in the filling space 16, The filling material 20 filled in the space between the first to fourth partition plates 15a to 15d is sequentially flowed through the exhaust port 12 to the heating pipe 40 And exhausted to perform heating of the building.

When the liquid conduction portion 50 is provided in the convection space 17, the heat medium oil contacts the heat exchange perforated plate 51 and is further heated while passing through the perforation hole 51a. The filling material 20 filled between the first to fourth partition plates 15a, 15b, 15c and 15d sequentially flows through the exhaust port 12 to the heating pipe 40, Of the heating system.

At this time, the heat storage tank 10 is formed such that the inlet port 11 is low and the exhaust port 12 is high, so that the heat storage tank 10 is smoothly discharged due to the circulation force by the circulation pump 31 and the characteristics of the airflow in which the heated heat- .

The metal oxide powder 60 mixed in the thermal oil flowing along the return pipe 30 and the heating pipe 40 and the metal oxide powder 60 of the thermal coating layer 21 formed on the surface of the filler 20 are mixed with the metal It is characterized by easy heating by the characteristics of the particles.

The metal oxide powder 60 flowing together with the heat medium oil along the recovery pipe 30 and the heating pipe 40 is stagnated at a specific point by the circulation force of the circulation pump 31 due to the small particle diameter But it is heated and flows while being scattered.

When the liquid heating unit 14 is formed in the convection space 17 of the heat storage tank 10 or the liquid tank 14a is formed in the lower part of the heat storage tank 10, And the geothermal heat is retained by heating the liquid thermal oil 13 and even if a change occurs in the temperature of the rock layer 202, convection can be prevented in the heat storage tank 10 filled with the filler 20 When the liquid heating unit 14 and the liquid tank 14a are installed, even if the geothermal temperature of the rock layer 202 changes while the liquid heating medium oil 13 is heated, the change rate Is finely and gradually changed, and there is a characteristic of excellent heat retention ability.

Table 1 shows experimental data when the heat transfer fluid flowing through the return pipe 30 and the heating pipe 40 is selected as air and when the metal oxide powder 60 is mixed with the heat transfer oil.

The test conditions shown in Table 1 below were obtained by connecting the flow pipe at both ends in an oval shape at room temperature of about 15 to 19 ° C, connecting a hot air fan to a part of the pipe, measuring the heating point temperature using a temperature sensor, And a temperature sensor for measuring the temperature at the point where the hot air was separated from the hot air was connected to a part of the opposite flow pipe provided with the hot air.

Experimental conditions BACKGROUND ART [0002] Thermal oil (air) The present thermal oil (air + metal oxide powder) Flow pipe length 30M Heating temperature
(° C) Measurement point temperature
(° C) Heating temperature
(° C) Measurement point temperature
(° C)

Flow rate (m / s) 0.5 76 72 76 74 1.0 63 58 63 63 1.5 59 55 59 59 2.0 54 50 54 54

That is, as shown in Table 1, it can be seen that when the metal oxide powder (60) is mixed with air, which is a heating medium, than the conventional method using the air, the temperature at the measurement point is higher, It is experimental data that it can be confirmed that the mixed metal oxide powder 60 is heated by the heat of the hot air.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art. have

10: heat storage tank 11: inlet
12: exhaust port 13: liquid phase heat medium oil
14: liquid phase heating part 14a: liquid phase tank
15: partition plate 15 ': cutting end
15a to 15d: first to fourth partition plates 16:
17: Convection space 20: Filler
21: thermal coating layer 22: aluminum mesh
30: return pipe 31: circulation pump
40: Heating pipe 41: Insulation
50: liquid phase conducting portion 60: metal oxide powder
51: Heat exchange perforated plate 100: Geothermal heating system
200: ground 201: weak layer
202: rock layer 203: construction space
204: sealing sheet

Claims (11)

In a system for heating by using geothermal heat,
A thermal storage tank 10 having an inlet 11 formed at one side of the upper portion and an exhaust port 12 formed at an opposite side of the upper portion of the lower portion of the soft layer 201 of the ground 200, Lt; / RTI >
A filler 20 having a thermal coating layer 21 formed on its surface is filled in the heat storage tank 10,
The inlet 11 of the heat storage tank 10 is formed with a recovery pipe 30 through which the heat medium oil flows by the operation of the circulation pump 31 so that the heating function is completed and reheated,
A heating pipe (40) through which the heated heat medium oil is exhausted for heating is connected to the exhaust port (12) of the heat storage tank (10) through a space between the fillers (20)
The metal oxide powder 60 is injected into the heat storage tank 10 and the heat medium oil flowing through the recovery pipe 30 and the heating pipe 40,
The circulation efficiency due to the operation of the circulation pump 31 and the heat rising air flow is increased due to the difference in height between the inlet 11 and the exhaust 12 of the heat storage tank 10 and the thermal coating layer 21 and the metal oxide powder 60), the heating efficiency is increased. The heat storage tank (10) according to claim 1, wherein the heat storage tank (10) has an inclined rectangular parallelepiped shape in which the inlet end (11) is formed at a low end and the end of the exhaust port (12)
Wherein the inclination angle of the heat storage tank (10) and the inclination angle of the height difference between the inlet (11) and the exhaust port (12) are in the range of 10 to 20 degrees. The geothermal heating system according to claim 1, wherein a liquid heating unit (14) containing liquid thermal oil (13) is provided below the heat storage tank (10). The heat storage tank (10) according to any one of claims 1 to 3, characterized in that the heat storage tank (10) has a space between the partition plate (15) dividing into a plurality of zones along the direction crossing the inner space, Is formed in a zigzag shape to form a space (16)
One end of the partition plate 15 is connected to the inner surface of the heat storage tank and the other end of the partition plate 15 is cut so as not to be connected to the inner surface of the heat storage tank 10,
, And the cutting end (15 ') side of the partition plate (15) is inclined toward a side where the exhaust port (12) is formed. The geothermal heating system according to claim 4, wherein the partition plate (15) is formed of one of a linear shape, a curved shape, and a curved shape. The filling material (20) according to claim 1, wherein the filling material (20) comprises one of pebble pebbles or a crushed stone and is filled in the aluminum net (22) to fill the filling space (16) formed by the dividing plate (15) And a convection space (17) in which the filler (20) is not filled is formed at the cutting end (15 ') side of the partition plate (15). The system according to claim 6, wherein the convection space (17) is formed by installing a liquid conduction part (50) in which a liquid thermal oil (13) mixed with a metal oxide powder (60) is contained. The heat exchanger according to claim 7, wherein a plurality of heat exchange perforated plates (51) are formed on the outer surface of the liquid storage tank (52) facing the center of the heat storage tank (10) Heating system. The method of claim 1, wherein the thermal coating layer (21) of the filler (20) is formed by coating a metal oxide powder (60) with an acrylic or silicone solvent and coating the surface of the filler (20) Heating system. The method according to any one of claims 1 to 10, wherein the metal oxide powder (60) is at least one selected from the group consisting of tungsten (W), molybdenum (Mo), antimony (Sb), cesium (Cs) Rb), vanadium (V), strontium (Sr), niobium (Nb), chromium (Cr), indium (in ₂ O _3), tin (Sn) by mixing selected for more than one or two selected from the tropical flow or thermal conductivity, Wherein the heating system is constructed so as to improve thermal stability and heat storability. The geothermal heating system according to claim 3 or 7, wherein the liquid thermal oil (13) is composed of one or more of phenyl ether, polyphenyl, arylalkane, and alkalene.

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