KR101019748B1 - Device for exchanging terrestrial heat by using subterrnaeanwater - Google Patents

Abstract

The present invention relates to a geothermal heat exchanger using groundwater, and more particularly, to groundwater using groundwater, which can minimize ground heat loss of groundwater pumped by minimizing heat exchange between groundwater pumped to the ground and groundwater administered to a well. It relates to an exchange device.

The geothermal heat exchange apparatus using groundwater according to the present invention is a geothermal heat exchange apparatus using groundwater for circulating groundwater of groundwater wells and using geothermal heat, and a ground water inlet is provided at a lower end thereof, and a casing inserted into the groundwater wells is installed. A pumping chamber is provided at the upper end, the suction pipe is inserted into the casing so that the inlet of the lower end is located in the groundwater introduced into the casing, and the pump is pumped inside the pumping chamber to suck and pump the groundwater from the pumping chamber. Circulation piped so that the other end is connected to the upper part of the groundwater well so that one end is connected to the pump and the pumped ground water is circulated to a heat exchange mechanism located outside of the groundwater well so as to discharge the circulated ground water to the top of the groundwater well. Characterized in that it comprises a tube.

Geothermal, groundwater

Description

Geothermal heat exchanger using groundwater {DEVICE FOR EXCHANGING TERRESTRIAL HEAT BY USING SUBTERRNAEANWATER}

The present invention relates to a geothermal heat exchanger using groundwater, and more particularly, to groundwater using groundwater, which can minimize ground heat loss of groundwater pumped by minimizing heat exchange between groundwater pumped to the ground and groundwater administered to a well. It relates to an exchange device.

Geothermal heat; geothermy] refers to the amount of heat released from the inside of the earth to the outside through the surface, and in particular, geothermal heat is released from the entire surface of the earth to the outside. The amount of geothermal heat varies greatly from region to region, but averages 10–6 cal / m 2 · sec. Outflow of geothermal heat is carried out by heat conduction or by gas, hot water and volcanic eruptions.

Geothermal energy is used for power generation in places where there is a large amount of tectonic heat flow, such as New Zealand, Italy, and Japan, and it is quite advantageous in terms of the environment from the geothermal energy. There is little carbon dioxide emissions and few pollutants. And geothermal can be used in many forms, including direct heating, power generation, heating and cooling through heat pumps, and heat for manufacturing.

On the other hand, it is possible to use geothermal heat using groundwater with little temperature change throughout the year, and as a device for heat exchange of geothermal heat using groundwater as described above, it is conventionally used in the structure as shown in FIG.

Referring to FIG. 2, in the conventional geothermal heat exchange apparatus using groundwater, after inserting the well 3 and the pipe 1 into the rock, the groundwater introduced into the well and introduced into the hole at the bottom of the pipe may be a submersible pump ( 4) is pumped to circulate through the circulation pipe (5) while the geothermal heat of the groundwater to heat exchanger (6), and then the groundwater is configured to be repeatedly circulated by administering the inside of the well again. The conventional geothermal heat exchanger using groundwater as described above supplies underground geothermal heat to the user in winter, and circulates groundwater absorbing heat generated in the user's room into the ground in the summer to dissipate the heat underground.

However, in the conventional geothermal heat exchange apparatus using the groundwater as described above, the pipe 1 is directly contacted with the groundwater inside the well, so that the groundwater pumped through the pipe 1 and the heat exchanger 6 are heat-exchanged after being heat-exchanged again. There is a disadvantage in that the heat exchange is performed between the ground water is injected into the interior of the bottom of the well and the ground water pumped through the pipe 1 is cooled or heated so that the use of geothermal heat is limited.

The present invention was conceived by recognizing the above point is an object of the present invention by using a groundwater that can minimize the loss of geothermal heat having pumped groundwater by minimizing heat exchange between groundwater pumped to the ground and groundwater administered to the well It is to provide a geothermal heat exchange device.

In order to achieve the above object, the geothermal heat exchanger using groundwater according to the present invention is a geothermal heat exchanger using groundwater for circulating groundwater of groundwater wells and using geothermal heat. A casing inserted into the casing, a pumping chamber provided at the upper end thereof, a suction pipe inserted into the casing so that the inlet of the lower part is located in the groundwater introduced into the casing, and the ground water is sucked and pumped from the pumping chamber. A pump is provided in the pumping chamber so that one end thereof is connected to the pump to circulate the pumped groundwater to a heat exchanger located outside the groundwater well, and the other end to discharge the circulated groundwater to the upper portion of the groundwater well. Consists of a circulation pipe piped to the top of the It is characterized by.

In addition, the ground heat exchange apparatus using the ground water according to the present invention, the lower end of the suction pipe further comprises a collecting tank surrounding the lower end of the suction pipe and filled with a heat exchange medium therein, the suction pipe located inside the collecting tank The portion is characterized in that formed in the form of a coil.

In addition, the geothermal heat exchange apparatus using the groundwater according to the present invention, characterized in that the portion between the lower end and the upper end of the suction pipe further comprises a pipe vacuum chamber installed to surround the portion between the lower end and the upper end of the suction pipe.

In addition, the geothermal heat exchange device using the groundwater according to the present invention, the inside of the casing is provided with an occlusal portion tapered in the upper and lower narrow, and the circulation pipe connected to the pumping chamber of the suction pipe in a tapered shape to occlude the occlusal portion The formed occlusal head is characterized in that the suction pipe is supported.

In addition, the geothermal heat exchange device using the groundwater according to the present invention, characterized in that the circulation pipe vacuum chamber provided to surround the portion in the portion located inside the well of the circulation pipe is characterized in that it is configured.

The geothermal heat exchange apparatus using the groundwater according to the present invention by the configuration as described above has the advantage of minimizing the heat loss of the groundwater pumped by minimizing the heat exchange between the groundwater pumped to the ground and the groundwater administered to the well. .

Hereinafter, a geothermal heat exchange apparatus using groundwater according to the present invention will be described in more detail with reference to the embodiment shown in the drawings.

1 is a cross-sectional view showing a geothermal heat exchange apparatus using groundwater according to an embodiment of the present invention.

Referring to the drawings, the geothermal heat exchange device using groundwater according to an embodiment of the present invention is to circulate the groundwater of the groundwater well 10 to heat the geothermal heat to the heat exchanger (HE) of the user, the groundwater well 10 , Casing 20, suction pipe 30, circulation pipe 40, collection tank 50, pipe vacuum chamber 60, circulation pipe vacuum chamber 70, occlusal head 80, pressure clamp 90 It is configured to include.

The groundwater well 10 is constructed by using the groundwater to the basement with little change in temperature. The upper portion of the groundwater well 10 is sealed with a cover 23 to block the inflow of contaminants.

The casing 20 is inserted into the groundwater well 10 in order to isolate the groundwater pumped back into the groundwater well 10 and the groundwater being pumped. The ground water suction port 21 is provided at the lower end of the casing 20 so that ground water absorbing geothermal heat is introduced into the casing 20 from the groundwater well 10. Here, absorbing geothermal heat means that when the heat exchanger HE is a cooler, the groundwater absorbed by the heat exchanger HE is cooled back into the groundwater well 10 to release heat to cool the heat exchanger. When HE is a heater, it means that the groundwater cooled by releasing heat from the heat exchanger HE is introduced back into the groundwater well 10 and absorbs heat to be heated.

The suction pipe 30 is a pipe body for the groundwater introduced into the casing 20 to rise in accordance with the operation of the pump 41 of the circulation pipe 40. The suction pipe 30 is provided with a pumping chamber 31 for installing the pump 41 at the upper end. The suction pipe 30 is inserted into the casing 20 so that the inlet 33 of the lower end is located in the groundwater introduced into the casing 20. In particular, since the suction pipe 30 is inserted into the casing 20 and is isolated from the groundwater well 10 by the casing 20 and the air layer therein, the groundwater well via the heat exchanger HE. Heat exchange between the groundwater introduced and lowered into the 10 and the groundwater sucked through the inside of the suction pipe 30 is blocked. As a result, groundwater geothermal losses can be minimized. On the other hand, at the lower end of the suction pipe 30, the heat collecting tank 50 is installed so that sufficient heat exchange is performed while the groundwater stays at the lower end of the suction pipe 30, the suction pipe 30 passing through the inside of the heat collecting tank 50 is Is formed in the form of a coil is configured to maximize heat exchange.

The circulation pipe 40 is for circulating the groundwater to pump the groundwater raised into the suction pipe 30 to be discharged back to the groundwater well 10 through the heat exchanger (H.E). Referring to the drawings, the circulation pipe 40 is provided with a pump 41 inside the pumping chamber 31 so as to suck and pump groundwater from the pumping chamber 31 and one end 42 of the pump 41. The connected and pumped ground water is circulated to a heat exchanger (HE) located outside the ground water well (10) so that the other end 43 discharges the circulated ground water to the upper portion of the ground water well (10). Piped to be connected to the top of the). As described above, the heat exchanger H.E becomes a cooler when the user aims to cool in summer, and a heater when the user aims to heat in winter.

The collecting tank 50 is to allow the groundwater to sufficiently absorb the surrounding geothermal heat while the groundwater stays at the lower end of the suction pipe 30. Referring to the drawings, the heat collecting tank 50 is installed to surround the lower end of the suction pipe 30 at the lower end of the suction pipe 30 and to fill a heat exchange medium therein. On the other hand, the suction pipe 30 is located in the heat collecting tank 50 is formed in the form of a coil is configured to maximize the heat exchange.

The pipe vacuum chamber 60 is for minimizing heat exchange between the groundwater sucked and flowed through the suction pipe 30 and its surroundings. Referring to the drawings, the pipe vacuum chamber 60 is installed between the lower end and the upper end of the suction pipe 30 so as to surround the part between the lower end and the upper end of the suction pipe 30.

The circulation pipe vacuum chamber 70 is for minimizing heat exchange between the groundwater flowing in one end of the circulation pipe 40 located inside the casing 20 and the surroundings, and the circulation pipe 40 The casing 20 is provided to surround the portion located in the portion.

The occlusal head 80 is to allow the suction pipe 30 and the circulation pipe 40 connected to each other to be supported by the casing 20. Referring to the drawings, the occlusal head 80 is engaged with an occlusal portion 22 that is tapered with a light beam narrowing inside the casing 20. The occlusal head 80 is formed in a tapered shape to be mated to the occlusal portion 22 at one end 42 of the circulation pipe 40 connected to the pumping chamber 31 of the suction pipe 30.

The pressure clamp 90 is for pressing the suction pipe 30 and the circulation pipe 40 connected to each other so as not to be lifted by water pressure, one end of which is supported by the cover 22 and the other end of the circulation pipe 40. It is connected to the circulation pipe vacuum chamber 70 surrounding the one end portion 42 of the) is pressed down the mass of the circulation pipe 40 and the suction pipe (30).

The geothermal heat exchanger using the groundwater described above and shown in the drawings is only one embodiment for carrying out the present invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments which have been improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be said to belong to the protection scope of the present invention.

1 is a cross-sectional view showing a geothermal heat exchange apparatus using groundwater according to an embodiment of the present invention

Figure 2 is a cross-sectional view showing a conventional geothermal heat exchanger using groundwater

<Short description of the major reference symbols>

10 groundwater well

20 casing

30 suction pipe

40 circulation tube

50 heat collection tank

60 pipe vacuum chamber

70 Circulation vacuum chamber

80 bite head

Claims (5)

delete In the geothermal heat exchange device using the groundwater for circulating the groundwater of the groundwater wells to use geothermal heat, A casing that is provided with a groundwater suction port at the lower end and is inserted into the groundwater well, and a pumping chamber is provided at the upper end, and a suction pipe is inserted into the casing so that the inlet of the lower part is located in the groundwater introduced into the casing; A pump is provided inside the pumping chamber to suck and pump ground water from the pumping chamber, one end of which is connected to the pump to circulate the pumped groundwater to a heat exchanger located outside the groundwater well, thereby circulating the groundwater circulated in the groundwater well. The other end is configured to include a circulation pipe piped to be connected to the upper portion of the groundwater well to discharge to the upper, The lower end of the suction pipe further includes a heat collecting tank surrounding the lower end of the suction pipe and filled with a heat exchange medium therein, Part of the suction pipe located inside the heat collecting tank is a geothermal heat exchanger using ground water, characterized in that formed in the form of a coil. The method of claim 2, And a pipe vacuum chamber disposed between the lower end and the upper end of the suction pipe, the pipe vacuum chamber being configured to surround the lower end and the upper end of the suction pipe. The method of claim 3, The inner side of the casing is provided with an occlusal portion tapered to the upper and lower narrow, The circulation pipe connected to the pumping chamber of the suction pipe is provided with an occlusal head formed in a tapered shape to be engaged with the occlusal part, and the suction pipe is supported. The method of claim 4, wherein Geothermal heat exchanger using groundwater, characterized in that the circulation pipe vacuum chamber provided to surround the portion in the portion located inside the well of the circulation pipe further comprises.

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