KR20190063698A - Energy System having Underground Storage - Google Patents

Abstract

The present invention provides an energy device capable of preventing energy stored in an underground heat storage unit from being lost by underground water. According to the present invention, the energy device including the underground heat storage unit includes: a first circulation flow path forming a flow path in which a fluid circulates; a heat source supplying heat to the fluid circulating in the first circulation flow path; the heat storage unit installed for at least a partial area to be embedded under the ground and absorbing heat from the fluid circulating along the first circulation flow path; a heat exchange unit including an evaporator and a condenser, wherein the evaporator evaporates a refrigerant by supplying the heat to the refrigerant circulating along a refrigerant circulation pipe and the condenser condenses the refrigerant circulating along the refrigerant circulation pipe by emitting the heat of the refrigerant; a second circulation flow path forming the flow path in which the fluid circulates and emits heat to the evaporator by absorbing the heat by the heat storage unit; a third circulation flow path forming the flow path in which the fluid circulates and emits heat to a heat consumption unit by absorbing the heat by the condenser; and a water level control unit installed to control a water level of the underground water passing through the heat storage unit.

Description

Energy System Having Underground Storage Unit (Energy System Having Underground Storage)

[0001] The present invention relates to an energy system having an underground storage unit for storing energy provided by a heat source in a storage unit buried underground, Energy loss is prevented or minimized.

As energy use increases and greenhouse gas emissions increase, humans are faced with the need to reduce their dependence on fossil fuels to reduce greenhouse gas emissions. In other words, as climate change due to the increase in greenhouse gas volume becomes a global problem, mankind is in urgent need of developing renewable energy.

Unlike fossil fuels, which replace fossil fuels and emit carbon dioxide, solar energy is green energy without environmental pollution and is the most energy capable of coping with various environmental regulations. In addition to solar energy, various waste heat generated in a power plant, condensation heat emitted from a condenser provided in various apparatuses for condensing the refrigerant, and the like can be utilized as renewable energy.

In order to utilize the above-mentioned renewable energy including solar energy as an energy source, there is a heat collecting part for collecting solar heat, a heat accumulating part for storing solar heat, a heat transferring part for forming a flow path for circulating fluid, The coffin is essential.

Conventional heat storage units may be installed on the ground or embedded in the ground. However, if the heat storage part is placed in the ground, heat loss due to ground water may be a problem. That is, even if the heat storage unit is provided with a structure that minimizes heat exchange with the outside through the heat insulating material, if groundwater flows through the heat storage unit, a part of the heat energy stored in the heat storage unit is lost by the groundwater.

An object of the present invention is to provide an energy device capable of preventing energy stored in an underground storage unit from being lost by groundwater. That is, in the energy device having the underground storage part, the present invention provides an energy device that can prevent the ground water from contacting the heat storage part by causing a cone of depression.

It is another object of the present invention to provide an energy device capable of minimizing loss of energy stored in the underground storage unit due to groundwater. That is, in an energy apparatus having an underground storage unit, the present invention aims to provide an energy apparatus capable of minimizing a water table gradient.

In order to solve the above-described problems, the present invention provides a fluid circulation system comprising: a first circulation flow path forming a flow path through which a fluid circulates; A heat source for supplying heat to the fluid circulating through the first circulation passage; A heat storage unit that is disposed so that at least a part of the area is buried in the ground, and that absorbs heat from the fluid circulating along the first circulation channel; An evaporator for evaporating the refrigerant by supplying heat to the refrigerant circulating along the refrigerant circulation pipe, and a condenser for condensing the refrigerant circulating along the refrigerant circulation pipe by discharging the heat of the refrigerant; A second circulation flow passage for forming a flow path through which the fluid circulates, and for absorbing heat from the heat storage portion and discharging the heat to the evaporator; A third circulation flow passage formed to form a flow path through which the fluid circulates, and to absorb heat from the condenser and discharge the heat to the heat dissipation section; And a water level regulating unit arranged to regulate a water level of the groundwater passing through the heat accumulating unit.

The water level control unit includes at least three tubular wells that surround the heat storage unit. And a tubular pump for discharging the groundwater flowing into each of the tubular spaces to the ground surface. The tubular pipes may be provided at a depth lower than the surface of the natural groundwater so as to position the bottom of each tubular space.

And the bottom of each reservoir may be located at a position lower than the bottom surface of the storage unit, and a horizontal line passing through the center of the storage unit may be provided between the bottom of the storage unit and the bottom of the reservoir, Or may be provided at a depth such that the bottom surface of each duct is positioned between a horizontal line passing through the center of the heat storage unit and the ground surface.

The first level and the second level being located upstream and downstream of the groundwater, respectively, the first level and the second level being opposite to each other with the storage unit interposed therebetween; A third space and a fourth space, which are provided on the upstream and downstream sides of the groundwater, respectively, and which are arranged to face each other with the storage unit interposed therebetween and form a square space surrounding the storage unit together with the first and second spaces; ; A first connection pipe having one end inserted into the first pipe and the other end inserted into the second pipe; A first connection pipe provided in the first connection pipe for moving the groundwater of the first connection pipe to the second connection pipe; A second connection pipe having one end inserted into the third pipe and the other end inserted into the fourth pipe; And a second connection pipe provided in the second connection pipe for moving the groundwater of the third connection pipe to the fourth connection pipe, And a depth for positioning the surface.

The bottom of each reservoir may be positioned between the horizontal line passing through the center of the accumulator and the bottom of the accumulator, Or may be provided at a depth between the horizon passing through the center of the heat storage unit and the ground surface such that the bottom surface of each canopy is located.

The present invention may include a first sensor for sensing the level of the first well; A second sensor for sensing a level of the second well; A third sensor for sensing a level of the third venue; A fourth sensor for sensing the level of the fourth well; And a controller for receiving the level data provided by the first sensor, the second sensor, the third sensor, and the fourth sensor, so that the water-table gradient of the underground water surface maintains a predetermined reference value. And a control unit for operating the first connector pipe pump and the second connector pipe pump.

The present invention provides a fifth aspect of the present invention, which is located between the first and third regions; A sixth well located between the second well and the fourth well, the sixth well facing the fifth well with the heat storage part interposed therebetween; A third connection pipe having one end inserted into the fifth pipe and the other end inserted into the sixth pipe; And a third connection pipe provided in the third connection pipe for moving the groundwater of the fifth connection pipe to the sixth connection pipe.

And a second ditch located downstream of the first ditch and the groundwater located upstream of the groundwater, the second ditch being provided to face the water level control unit with the storage unit interposed therebetween; A ditch connection pipe having one end inserted into the first ditch and the other end inserted into the second ditch; And a ditch connector pipe provided in the ditch connector pipe to move the groundwater of the first ditch to the second ditch, wherein the first ditch and the second ditch are lower than the water surface of the natural groundwater And a depth for positioning the bottom surface of each trench in the position.

The first ditch and the second ditch may be provided at a position lower than the bottom surface of the heat storage unit so as to position the bottom surface of the respective trench and between a horizontal line passing through the center of the heat storage unit and a bottom surface of the heat storage unit The depth of the bottom surface of each trench may be set to a depth at which the bottom surface of each trench is positioned between a horizontal line passing through the center of the heat storage unit and the ground surface.

The water level control unit may further include a drain disposed to surround the storage unit, and the drain may have a depth to locate the bottom surface of each trench at a position lower than the surface of the natural groundwater.

 The trench may be provided at a position lower than the bottom surface of the heat storage unit so as to position the bottom surface of the trench, and a bottom surface of the trench may be positioned between a horizontal line passing through the center of the heat storage unit and a bottom surface of the heat storage unit Or may be provided at a depth that allows the bottom surface of the trench to be positioned between a horizontal line passing through the center of the heat storage unit and the ground surface.

The trench may have any one of a circle, a quadrangle, a C-shape, and a C-shape to surround the heat storage part.

A fourth circulation flow path is formed to form a flow path through which the fluid circulates, and to supply heat to the heat dissipation part by absorbing heat from the heat storage part. A fourth pump circulating the fluid along the fourth circulation passage; A fourth heat absorbing region provided in the fourth circulation channel to transfer the heat stored in the heat storage unit to the fluid inside the fourth circulation channel; And a fourth heating region provided in the fourth circulation channel to supply heat stored in the fluid inside the fourth circulation channel to the heat consuming unit.

The present invention provides an energy device capable of preventing the energy stored in the underground storage unit from being lost by groundwater. That is, in the energy device having the underground storage part, the present invention provides an energy device that can prevent the ground water from contacting the heat storage part by causing a cone of depression.

In addition, the present invention has an effect of providing an energy device capable of minimizing loss of energy stored in the underground storage unit due to groundwater. That is, in the energy apparatus having the underground storage unit, the present invention provides an energy apparatus capable of minimizing the water table gradient.

FIG. 1 and FIG. 2 show an example of an energy device having an underground heat storage unit according to the present invention.
3, 4, and 5 illustrate an example of a water level controller provided in the present invention.
FIGS. 6 and 7 illustrate another embodiment of the energy device having the underground heat storage unit of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein. It is to be understood that the present invention is not limited to the details of the embodiments described below, .

As shown in FIG. 1, the energy device 100 equipped with the underground heat storage unit of the present invention includes a heat source 1, a heat storage unit 2 providing a space for storing energy, at least a part of which is buried underground, A first heat transfer part 3 provided to form a circulating flow path of the same fluid to discharge the heat absorbed by the heat source 1 to the heat storage part 2, an evaporator 51 for evaporating the circulating refrigerant, A second heat transfer unit 6 for absorbing the heat stored in the heat storage unit 2 and discharging the heat stored in the heat storage unit 51 to the evaporator 51, a condenser 52 for condensing the refrigerant passed through the condenser 52, And a third heat transfer section (7) for discharging the heat released from the heat dissipating section (52) to the heat dissipating section (4).

The heat source 1 may be a collecting device provided to collect solar energy, a collecting device provided to collect waste heat generated in a power plant, and the like.

The heat storage unit 2 may be provided in any one of a TTES-tank thermal energy storage, a PTES-pit thermal energy storage, and a BTES-borehole thermal energy storage .

The tank regenerative thermal storage unit is composed of a tank 21 in which at least a part of the region is buried in the ground and a heat storage material 22 stored in the tank. FIG. 1 shows an example in which the tank 21 is completely buried in the ground Respectively. The tank storage material in the tank storage heat storage part can become water. The pit regenerative storage portion is composed of a cover that fills a storage material in an artificial or natural puddle and closes the upper surface. The storage material may be water, or a mixture of water and gravel.

FIG. 2 shows an example of a borehole thermal storage heat storage material. The borehole thermal storage heat storage material stores heat energy in the ground by inserting a partial area 313 of the first heat transfer part 3 in a hole drilled from the ground surface toward the underground (The way the earth functions as a storage material).

1, the first heat transfer unit 3 includes a first circulation channel 31 that forms a flow path through which fluid is circulated. The first circulation channel 31 is connected to the heat source 1, A first heat absorbing region 311 provided to transfer the heat collected in the first circulation channel to the fluid inside the first circulation channel, a first heat absorbing region 311 provided to transmit heat stored in the fluid inside the first circulation channel to the heat storage unit 2, And a heat generating region 313.

That is, the first circulation channel 31 exchanges heat with the heat collecting part 1 through the first heat absorbing area 311 and exchanges heat with the heat storage part 2 through the first heat generating area 313. The first heat transfer part 3 is provided with a first pump 32 for circulating the fluid along the first circulation flow path 31.

When the first pump 32 is operated according to the control signal of the control unit, the fluid circulates along the first circulation flow path 31. The fluid inside the first circulation flow path 31 flows into the first heat absorption region 311 And the heat energy absorbed while passing through the first heat generating region 313 will be discharged to the heat accumulating portion 2. [ The cooled fluid passing through the first heat generating region 313 moves to the first heat absorbing region 311 through the first pump 32 and absorbs the heat energy again in this process. Accordingly, the energy stored in the heat storage unit 2 can be stored in the heat storage unit 1 according to the present invention.

When the heat exchanging part 5 is provided as a heat pump, the heat exchanging part 5 is provided with a refrigerant circulation pipe 54 (hereinafter referred to as a " heat exchanging part ") for allowing the refrigerant to pass through the evaporator 51 and the condenser 52 sequentially A compressor 541 for allowing the refrigerant to circulate along the refrigerant circulation pipe 54; and an expander 543 for lowering the pressure of the refrigerant passed through the condenser 52.

The second heat transfer part 6 includes a second circulation flow path 61 that forms a flow path through which fluids such as water circulate. The second circulation flow path 61 connects the heat stored in the heat storage part 2 A second heat absorbing region 611 provided to transfer the fluid to the inside of the second circulation channel, and a second heat generating region 613 provided to discharge the heat stored in the fluid inside the second circulation channel to the evaporator 51 .

The second heat transfer part 6 is provided with a second pump 62 for circulating the fluid along the second circulation flow path 61. When the second pump 62 is operated according to the control signal of the control unit, the fluid in the second circulation flow path 61 absorbs thermal energy from the heat storage unit 2 while passing through the second heat absorption region 611, And the heat energy absorbed when passing through the second heat generating region 613 through the second pump 62 is discharged to the evaporator 51. The fluid having undergone the heat exchange with the evaporator 51 moves to the heat storage unit 2 along the second circulation flow passage 61 and absorbs the heat energy stored in the heat storage unit 2. [ The heat energy stored in the heat accumulating portion 2 is supplied to the evaporator 51 and the refrigerant passing through the evaporator 51 will be evaporated.

The third heat transfer portion 7 is a means for absorbing the heat energy emitted from the condenser 52 and supplying it to the heat consuming portion 4. [ The heat-consuming unit 4 means a means for consuming thermal energy. Examples of the heat-consuming unit 4 include household appliances that consume thermal energy in the home, generators that generate electricity using thermal energy, power plants, and the like.

The third heat transfer section 7 includes a third circulation flow passage 71 that forms a flow path through which the fluid circulates and the third circulation flow passage 71 circulates the heat radiated from the condenser 52 to the third circulation path 71. [ And a third heat generating area 713 provided to discharge heat stored in the fluid inside the third circulating flow path to the heat consuming part 4, do.

The third heat transfer part 7 is provided with a third pump 72 for circulating the fluid along the third circulation flow path 71. When the third pump 72 is operated according to the control signal of the control unit, the fluid circulates along the third circulation channel 71. In this process, the fluid in the third circulation channel passes through the condenser 52 The refrigerant absorbs heat energy from the refrigerant and supplies it to the heat-consuming portion 4. The refrigerant passing through the condenser 52 is condensed.

That is, the fluid circulating through the third circulation channel 71 by the operation of the third pump 72 absorbs the heat energy emitted from the condenser 52 in the third heat absorption region 711, 713 and supplies the absorbed heat energy to the heat consuming portion 4. [ The fluid that has passed through the third heat generating region 713 moves to the condenser 52 along the third circulating flow path 71 to absorb thermal energy.

The energy device 100 including the underground storage unit having only the above-described structure may cause energy loss when the storage unit 2 comes into contact with the ground water. That is, even if the heat storage unit 2 is provided with a structure minimizing heat exchange with the outside through the heat insulating material, if the water level W1 of the groundwater forms a water level contacting the heat storage unit 2, There is a great risk that the energy stored in the heat storage unit 2 is lost. In order to minimize the heat loss due to the groundwater, the energy device 100 equipped with the underground heat storage unit of the present invention includes a water level control unit 8 for controlling a water level W1 of the groundwater by causing a cone of depression, As shown in FIG.

3, the water level control unit 8 includes at least three tubular wells for surrounding the storage unit 2, and a plurality of groundwater collectors for discharging the groundwater flowing into the respective reservoirs to the ground surface, A pump may be included.

3 is a perspective view of the water purifier according to the embodiment of the present invention. The water purifier 8 includes four purifiers 81, 82, 83, and 84 for surrounding the regenerator 2, four purifier pumps for discharging groundwater 811, 821, 831, and 841, respectively.

That is, as shown in FIG. 3 (c), the water level control unit 8 provided in the present invention includes a first conduit 81 and a second conduit 82 facing each other with the heat storage unit 2 interposed therebetween, A third conduit 83 and a fourth conduit 83 which form a quadrangle surrounding the first conduit 2 and the second conduit 2 so as to face each other with the second conduit 2 interposed therebetween, 84 as shown in FIG.

3 includes a first circumferential pump 811 for discharging the groundwater of the first conduit to the earth surface, a second circumferential pump 821 for discharging the groundwater of the second conduit to the earth surface, A third circumferential pump 831 for discharging the groundwater of the third conduit to the surface of the earth, and a fourth circumferential pump 841 for discharging the groundwater of the fourth conduit to the earth surface.

Each of the wells 81, 82, 83, and 84 is provided at a depth lower than the surface of the natural groundwater (the surface of the groundwater before installation of the well) to position the bottom surface of each well.

When the underground water surface in the natural state is higher than the bottom surface of the heat storage portion 2, the respective tubes 81, 82, 83, and 84 are positioned on the bottom surface of the heat storage portion 2 as shown in FIG. And the bottom surface of each well is positioned at a lower position than the bottom surface (B). The water level of the groundwater is lowered (W2) to prevent the storage portion 2 from contacting groundwater.

When the groundwater is discharged to the ground through the respective well pumps 811, 821, 831 and 841, a conical water level drop occurs in the groundwater surface W1, and a water level drop occurs in each of the four water wells 81, 82, 83, When the conical water level drops are combined with each other, the water level of the groundwater can form a nearly horizontal surface. Therefore, when each of the wells is drilled so that the bottom surfaces of the wells 81, 82, 83, and 84 are located lower than the bottom surface B of the storage unit 2, To the water level W2 at which it does not come into contact with the heat storage portion 2. [

3 (a) can not be formed due to environmental factors such as rocks existing in the underground (G) or cost factors required for drilling, the water level control unit 82, 83, and 84 may be positioned lower than the surface of the natural groundwater through the first and second water pipes 8, respectively.

The tubular housings 81, 82, 83 and 84 provided in the water level regulating portion 8 of FIG. 3 (b) are arranged between the horizontal line H passing through the center of the heat accumulating portion and the bottom surface B of the heat accumulating portion, The bottom surface of the wells 81, 82, 83, and 84 is located, and is distinguished from the wells provided in the level control unit of FIG. The water level adjusting unit 8 shown in FIG. 3 (b) can minimize the water-table gradient of the underground water surface to slow down the movement speed of the groundwater, thereby minimizing the heat loss of the heat storage unit 2. In addition, the embodiment shown in FIG. 3 (b) can also reduce the moving speed of the groundwater, so that the groundwater can be utilized as a thermal storage material for storing energy, and the thermal storage capacity of the thermal storage unit 2 can be expected to be increased.

3, each of the wells 81, 82, 83, and 84 may be drilled so that its bottom surface is positioned between the ground surface and a horizontal line H passing through the center of the heat storage portion.

4 (a) and 4 (b) illustrate another embodiment of the water level regulating unit 8, which is provided between the regenerator 2 and the water level regulating unit 8, The first and second ducts 81 and 82 are arranged to face each other and face each other with the heat storage unit interposed therebetween, and a rectangular space enclosing the heat storage unit together with the first and second ducts A third well 83 and a fourth well 84 which form the second well. It is preferable that the first conduit 81 and the third conduit 83 are located upstream of the groundwater and the second conduit 82 and the fourth conduit 84 are located downstream of the groundwater.

4 may include a first connection pipe 823 having one end inserted into the first pipe 81 and the other end inserted into the second pipe 82, A first connection pipe pump 825 provided in the second conduit 823 for moving the groundwater of the first conduit 81 to the second conduit 82, a first connection pipe 825 inserted into the third conduit 83, A second connection pipe 843 inserted in the fourth pipe 84 and a second connection pipe 843 provided in the second connection pipe 843 for moving the groundwater of the third pipe 83 to the fourth pipe 84, And a pipe pump 845.

Each of the wells 81, 82, 83, and 84 may be provided at a depth lower than the surface of the natural groundwater to locate the bottom of each well. That is, each of the wells 81, 82, 83, and 84 may be provided at a position lower than the bottom surface of the heat storage unit 2 according to the level of the groundwater, (See FIG. 4 (a)), and the bottom surface of the heat storage portion may be provided between a horizontal line passing through the center of the heat storage portion and a bottom surface of the heat storage portion Or may be provided with a depth to position the bottom surface.

Further, the water level control unit 8 according to the present embodiment includes a first sensor 91 for sensing the water level of the first well 81, a second sensor 92 for sensing the water level of the second well 82, And a third sensor (not shown) for sensing the level of the third well 83. And a fourth sensor (not shown) for sensing the level of the fourth well 84. In this case, the control unit 89 receives the level data provided by the first sensor 91, the second sensor 92, the third sensor, and the fourth sensor, The first connection pipe pump 825 and the second connection pipe pump 845 may be controlled to maintain the predetermined reference value. The reference value may be set to an inclination angle in the range of 0 to 5 degrees.

4 (b), the water level adjusting unit 8 according to the present embodiment is disposed between the first well 81 and the third well 83 to be located upstream of the groundwater And a sixth conduit (84) located between the second conduit (82) and the fourth conduit (84), the fifth conduit (85) being located opposite the second conduit A third connection pipe 863 having one end inserted into the fifth pipe 85 and the other end inserted into the sixth pipe 86 and the third connection pipe 863, And a third pipe pump 865 for moving the groundwater of the fifth pipe 85 to the sixth pipe 86. So that the underground water surface inclination angle can be maintained at the reference value more quickly and effectively.

In this case, the water level control unit 8 includes a fifth sensor (not shown) for sensing the water level of the fifth water level 85, a sixth sensor (not shown) for sensing the water level of the sixth water level 86, And the control unit may adjust the water level of the groundwater based on the water level data provided by the fifth sensor and the sixth sensor.

The water level adjusting unit 8 shown in FIG. 4C includes a first ditch 871 and a second ditch 873 provided to face each other with the storage unit 2 interposed therebetween, And a drain connection pipe 875 inserted into the first drain hole 871 and the other end inserted into the second drain hole 873. The drain connection pipe 875 is provided in the drain connection pipe to move the groundwater of the first drain to the second drain And a ditch connector pump 879. In this case, any one of the first ditch 871 and the second ditch 873 is positioned upstream of the groundwater, and the other one of the first ditch 871 and the second ditch 873 is located at a position Should be located downstream.

It is preferable that the first and second ditches 871 and 873 have a depth that positions the bottom of each of the ditches 871 and 873 at a position lower than the surface of the natural groundwater. That is, the first ditch 871 and the second ditch 873 are positioned at a position lower than the bottom surface of the storage unit 2, depending on the depth of the water surface, such that the bottom surface of each of the trenches 871, 873 may be provided between the horizontal line passing through the center of the heat storage unit and the bottom surface of the heat storage unit and a depth for positioning the bottom surface of each of the trenches 871 and 873 may be provided between the horizontal line passing through the center of the heat storage unit and the ground surface And a bottom surface of each of the trenches may be positioned at a depth.

The water level adjusting portion 8 shown in FIG. 5 is provided only with a ditch 88 which is provided to enclose the heat storage portion 2. Preferably, the trench 88 is located at a position lower than the natural groundwater surface and has a depth to locate the bottom surface of each trench 88. The ditch 88 may be located at a position lower than the bottom surface of the storage unit 2 depending on the depth of the water surface, And a bottom surface of the trench 88 may be positioned between a horizontal line passing through the center of the heat storage unit 2 and a bottom surface of the heat storage unit 2, And a depth for locating the bottom surface of the base plate 88.

The water level adjusting unit 8 according to the present embodiment may be provided in a rectangular shape (FIG. 5 (a)) or a circle (FIG. 5 (b)) surrounding the heat storage unit 2. Although not shown in the drawings, the ditches 88 may be provided in a C shape or a C shape. The water level W2 of the ground water is lower than that of the ground water flowing through the ditch 88 because the flow resistance acting on the groundwater will be smaller than the channel resistance acting on the groundwater when the groundwater passes through the underground G, As shown in FIG.

6 is a view showing another embodiment of the energy device 100 provided with the underground heat storage part of the present invention. The energy device 100 according to the present embodiment is configured to heat the heat energy collected from the heat source 1 to the heat storage part 2 And a heat supply passage (34) for transferring the heat to the heat dissipation unit (4) without storing the heat dissipation unit (4).

The heat supply passage 34 is connected at one end between the first heat absorbing region 311 and the first heat generating region 313 and at the other end between the first heat generating region 313 and the first heat generating region 313, A connection pipe 343 connected between the heat dissipating unit 4 and the heat dissipating unit 4, a connection pipe heating area 3431 for exchanging the fluid inside the connection pipe with the heat dissipating unit 4, And a valve 341 controlled by a control unit.

The fluid that has passed through the first heat absorbing region 311 by the valve 341 may be moved to the first pump 32 via the heat dissipating unit 4 through the connection pipe 343, Heat can be transferred to the first pump 32 after passing through the heat storage portion 2 through the first heat generating region 313. Therefore, in the present embodiment, heat energy may be stored in the heat accumulating unit 2 or may be directly supplied to the heat consuming unit 4, if necessary.

7 is a view showing another embodiment of the energy apparatus 100 provided with the underground heat storage unit of the present invention. In the energy apparatus 100 according to the present embodiment, the energy stored in the heat storage unit 2 is supplied to the heat exchange unit 5, And the fourth heat transfer part 41 directly transferred to the heat consuming part 4 without passing through the heat transfer part 4.

The fourth heat transfer part 41 includes a fourth circulation flow passage 411 for forming a flow path through which the fluid circulates, a fourth pump 417 for circulating the fluid along the fourth circulation flow passage 411, 2) for transferring the heat stored in the fluid inside the fourth circulation channel to the fluid in the fourth circulation channel, a fourth heat emission region 413 for supplying the heat stored in the fluid inside the fourth circulation channel to the heat consumption unit 4, (415).

7, when the temperature of the heat stored in the heat storage unit 2 measured through the heat storage energy temperature sensor (not shown) or the like is equal to or higher than the reference temperature, the control unit operates the fourth pump 417, And the energy stored in the heat accumulating portion 2 will be supplied to the heat consuming portion 4. [ However, if the temperature of the heat stored in the heat storage unit 2 is lower than the reference temperature, the control unit may store the heat stored in the heat storage unit 2 through the second heat transfer unit 6, the heat exchange unit 5 and the third heat transfer unit 7 Energy may be supplied to the heat-consuming portion 4. [

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: Energy device equipped with underground storage part 1: Heat source
2: heat accumulating part 21: tank 3: first heat transfer part
31: first circulating flow path 311: first heat absorbing region 313: first heat generating region
32: first pump 34: heat supply flow path 341: three-way valve
343: connector 3431: connector heating region 4:
5: heat exchanger 51: evaporator 52: condenser
54: Refrigerant circulation pipe 541: Compressor 543: Inflator
6: second heat transfer section 61: second circulation flow passage 611: second heat absorption region
613: second heat generating region 62: second pump 7: third heat transfer section
71: third circulating flow path 711: third heat absorbing region 713: third heat generating region
72: Third pump 8: Water level control unit 81:
811: First Aspect Pump 82: Second View 821: Second Aspect Pump
83: Third view 831: Third view pump 84: Fourth view
841: Fourth circumferential pump 823: First connecting pipe 825: First connecting pipe pump
843: second connection pipe 845: second connection pipe pump 85: fifth connection pipe
86: Sixth Regulation 863: Third Connector 865: Third Connector Pump
871: first ditch 873: second ditch 875: ditch connector
879: Ditch connector Pump 9: Control 91: First sensor
92: second sensor

Claims (9)

A first circulation flow path forming a flow path through which the fluid circulates;
A heat source for supplying heat to the fluid circulating through the first circulation passage;
A heat storage unit that is disposed so that at least a part of the area is buried in the ground, and that absorbs heat from the fluid circulating along the first circulation channel;
An evaporator for evaporating the refrigerant by supplying heat to the refrigerant circulating along the refrigerant circulation pipe, and a condenser for condensing the refrigerant circulating along the refrigerant circulation pipe by discharging the heat of the refrigerant;
A second circulation flow passage for forming a flow path through which the fluid circulates, and for absorbing heat from the heat storage portion and discharging the heat to the evaporator;
A third circulation flow passage formed to form a flow path through which the fluid circulates, and to absorb heat from the condenser and discharge the heat to the heat dissipation section; And
And a water level regulating unit arranged to regulate a water level of the groundwater passing through the heat storage unit. The method according to claim 1,
The water level control unit includes at least three tubular wells that surround the heat storage unit. And a well pump for discharging the ground water flowing into each of the wells to an earth surface,
Wherein each of the tunnels is provided at a depth lower than a surface of the groundwater to place a bottom surface of each tunnels. The method according to claim 1,
The level-
The first and second wells being disposed to face each other with the heat storage portion interposed therebetween, the first and second wells being located upstream and downstream of the groundwater, respectively;
A third space and a fourth space, which are provided on the upstream and downstream sides of the groundwater, respectively, and which are arranged to face each other with the storage unit interposed therebetween and form a square space surrounding the storage unit together with the first and second spaces; ;
A first connection pipe having one end inserted into the first pipe and the other end inserted into the second pipe;
A first connection pipe provided in the first connection pipe for moving the groundwater of the first connection pipe to the second connection pipe;
A second connection pipe having one end inserted into the third pipe and the other end inserted into the fourth pipe;
And a second connection pipe provided in the second connection pipe to move the groundwater of the third connection pipe to the fourth connection pipe,
Wherein each of the tunnels is provided at a depth lower than a surface of the groundwater to place a bottom surface of each tunnels. 4. The method according to any one of claims 1 to 3,
A first sensor for sensing the level of the first well;
A second sensor for sensing a level of the second well;
A third sensor for sensing a level of the third venue;
A fourth sensor for sensing the level of the fourth well; And
And a controller for receiving the level data provided by the first sensor, the second sensor, the third sensor, and the fourth sensor so that the water-table gradient of the underground water surface maintains a preset reference value, And a control unit for operating the connection pipe pump and the second connection pipe pump. 5. The method of claim 4,
A fifth venue located between said first venue and said third venue;
A sixth well located between the second well and the fourth well, the sixth well facing the fifth well with the heat storage part interposed therebetween;
A third connection pipe having one end inserted into the fifth pipe and the other end inserted into the sixth pipe; And
And a third connection pipe provided in the third connection pipe for moving the groundwater of the fifth connection pipe to the sixth connection pipe. The method according to claim 1,
The level-
A second ditch located opposite the first ditch and the groundwater upstream of the groundwater and facing the first and second ditches with the storage unit interposed therebetween;
A ditch connection pipe having one end inserted into the first ditch and the other end inserted into the second ditch; And
And a ditch connector pipe provided in the ditch connector to move the groundwater of the first ditch to the second ditch,
Wherein the first trench and the second trench are provided at a depth lower than a surface of the groundwater to place a bottom surface of each trench. The method according to claim 1,
Wherein the water level control unit further comprises a drain disposed to surround the heat storage unit, and the drain is provided at a depth that positions the bottom surface of each trench at a position lower than the water surface of the groundwater, Device. 8. The method of claim 7,
Wherein the trench has any one of a circle, a quadrangle, a C-shape, and a C-shape to surround the heat storage part. 9. The method according to any one of claims 1 to 8,
A fourth circulation flow passage formed to form a flow path through which the fluid circulates and to supply heat to the heat dissipation section by absorbing heat from the heat storage section;
A fourth pump circulating the fluid along the fourth circulation passage;
A fourth heat absorbing region provided in the fourth circulation channel to transfer the heat stored in the heat storage unit to the fluid inside the fourth circulation channel;
And a fourth heat generating region provided in the fourth circulation flow passage to supply heat stored in the fluid inside the fourth circulation flow passage to the heat consuming section.

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