KR20110002375A

KR20110002375A - Subterranean heat of heat pump system use well pump

Info

Publication number: KR20110002375A
Application number: KR1020090059949A
Authority: KR
Inventors: 이춘우
Original assignee: 농업회사법인 농산무역 유한회사; 주식회사 탑솔
Priority date: 2009-07-01
Filing date: 2009-07-01
Publication date: 2011-01-07
Also published as: KR101124360B1

Abstract

The present invention relates to a heat source storage type geothermal heat pump system using a cardiac well pump device, and more particularly, by using ground water at a predetermined temperature in a heat source heat storage tank by a cardiac well pump device, through a plurality of geothermal underground heat exchangers. The construction cost and construction period of the underground heat exchanger are reduced by not supplying a heat source, thereby reducing the construction area, and the stable heat source can be supplied through the cardiac pump device, thereby improving the efficiency of the geothermal heat pump system. do.

Geothermal heat pump device, heat storage tank, heat source, cardiac pump device, underground heat exchanger

Description

Subterranean heat of Heat pump system use Well pump}

The present invention relates to a heat source storage type geothermal heat pump system using a cardiac well pump device, and more particularly, by using ground water at a predetermined temperature in a heat source heat storage tank by a cardiac well pump device, through a plurality of geothermal underground heat exchangers. No need to supply a heat source, the construction cost and construction period of the underground heat exchanger is reduced, the construction area is reduced accordingly, it is possible to supply a stable heat source through the cardiac pump device to improve the efficiency of the geothermal heat pump system The present invention relates to a heat source storage type geothermal heat pump system using an apparatus.

In general, home and industrial energy sources used include fossil fuels such as petroleum and natural gas or nuclear fuel, and the use of such energy sources not only causes major pollution of the environment, but also has a limited amount of reserves. As a result, development of alternative energy is actively underway.

In addition, as an energy source used for cooling and heating, fossil fuels such as coal, petroleum, and natural gas are used, or power energy produced using these fossil fuels or nuclear power is mainly used.

However, since fossil fuels have a disadvantage of polluting water quality and the environment due to various pollutants generated in the combustion process, recent development of alternative energy to replace them has been actively conducted.

Among these alternative energies, research on wind power, solar heat, geothermal energy, etc., which have infinite energy sources, and air-conditioning devices using them are used. These energy sources have the advantage of obtaining energy with little effect on air pollution and climate change. On the other hand, the energy density is very low.

In particular, in order to obtain energy using wind and solar heat, a large area must be secured along with the limit of the installation site. These devices have a small energy production capacity per unit and are expensive to install and maintain.

Geothermal energy, which is a member of alternative energy, is used for power generation by using high temperature geothermal deep in the basement, and also applied to air-conditioning system using geothermal heat of 10 ~ 20 ℃, and applied to air-conditioning technology of buildings, etc. In this case, energy savings of up to 40% or more, and energy saving costs of 40 to 70% are known, compared to conventional heating and cooling devices.

The geothermal heat pump system, which is an electric device that uses natural heat storage such as groundwater for the purpose of cooling and heating the building using the geothermal heat, is equipped with an underground heat exchanger, and the heat exchanger releases heat into the ground in summer and heat from the ground in winter. By absorbing the temperature, the cooling and heating performance is not degraded by the geothermal temperature which maintains almost constant temperature at 10 ~ 20 ℃ throughout the year, so stable operation is possible.

Therefore, many air-conditioning and heating devices using geothermal energy, which require relatively low cost for installation and maintenance, are used.

Commonly used geothermal heating and cooling device is composed of a geothermal heat exchanger for recovering the geothermal heat, and a heat pump to move the collected geothermal heat to a necessary place to perform the cooling and heating.

Among them, the geothermal heat exchanger is installed in the form of digging a heat-exchange pipe by digging a bore-hole in a substantially vertical direction after securing a ground with a margin.

Such a geothermal heat exchanger installation is well suited for larger buildings with no rock near the surface or little slope collapse. The installation of such a geothermal heat exchanger excavates a borehole 50 ~ 200m deep underground at predetermined intervals, and each borehole is wound once or twice to bury a U-shaped pipe.

After the pipe is installed, each bore hole is filled with bentonite or cement, which is an impermeable material, and then grouted. In the grouting process, the borehole is filled with a special material to prevent the ingress of surface water into the aquifer or the infiltration of adjacent aquifers.

However, the geothermal heating and cooling device needs to excavate a lot of bore holes to extract the required heat source, and accordingly, many places require a lot of construction costs and construction periods, and many borehole excavation sites are required. .

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

By supplying groundwater with constant temperature to the heat source heat storage tank by the heart pump, it is not necessary to supply the heat source through a number of geothermal underground heat exchangers in the past, thereby reducing the construction cost and construction period of the underground heat exchanger. It is an object of the present invention to provide a heat source storage type geothermal heat pump system using a heart pump which reduces the area.

In addition, the present invention has a further object to provide a heat source storage type geothermal heat pump system using a cardiac pump device that can supply a stable heat source through the cardiac pump device to improve the efficiency of the geothermal heat pump system.

In order to achieve the above object, the present invention and the heart pump pump for transporting the ground water of the predetermined temperature stored in the ground through the cardiac wells by drilling the ground;

The groundwater transferred through the cardiac pump is filled inside, but is introduced through the upper side when heating, and is introduced through the lower side when cooling, and the water filled inside is stratified according to the temperature so that the upper part is high temperature and the lower part is low temperature. A heat source heat storage tank formed of;

The hot water is connected to the inner upper portion of the heat source heat storage tank, and when heated, the high temperature water of the heat source heat storage tank is supplied to the geothermal heat pump device, and during cooling, the hot water returning the hot water heat exchanged from the geothermal heat pump device to the heat source heat storage tank. A transfer pipe;

It is connected to the inner lower side of the heat source heat storage tank, when heating, returning the low-temperature water heat exchanged from the geothermal heat pump device to the heat source heat storage tank, and during cooling the cold water transfer to supply the low temperature water of the heat source heat storage tank to the geothermal heat pump device Tube;

An underground heat exchanger connected by the heat source heat storage tank and the geothermal circulation pipe to perforate the ground to compensate for the insufficient heat source through the heart pump, and heat exchange with the groundwater in the ground;

A geothermal heat pump apparatus for heat-exchanging high and low temperature water and circulating water (high and low temperature water) exchanged at the load side with high and low temperature water transfer pipes connected to the heat source heat storage tank;

The load heat storage tank receives the heat exchanged circulating water and the heat exchanged circulating water from the load side through the geothermal heat pump device, and is filled inside, stratified according to the temperature of the circulated water filled therein, so that the upper side is high temperature and the lower side is low temperature. It relates to a heat source storage type geothermal heat pump system using a cardiac pump device characterized in that it comprises a.

As described above, the heat source storage type geothermal heat pump system using the cardiac well pump device of the present invention uses ground water of a predetermined temperature to the heat source heat storage tank by the cardiac well pump device, thereby providing a plurality of geothermal underground heat exchangers. There is no need to supply a heat source, thereby reducing the construction cost and construction period of the underground heat exchanger, thereby reducing the construction area.

In addition, the present invention can supply a stable heat source through the heart pump device has the effect of improving the efficiency of the geothermal heat pump system.

The present invention has the following features to achieve the above object.

The present invention comprises a cardiac pump for perforating the ground and conveying groundwater at a predetermined temperature stored in the ground through the cardiac well tube;

It is connected to the inner upper side of the heat source heat storage tank, when heating the hot water transfer to supply the hot water of the heat source heat storage tank to the geothermal heat pump device, and return the hot water heat exchanged from the geothermal heat pump device to the heat source heat storage tank when cooling Tube;

A geothermal heat pump device for heat-exchanging the high and low temperature water and the circulating water (high and low temperature water) exchanged on the load side connected to the high and low temperature water transfer pipe of the heat source heat storage tank;

The load heat storage tank receives the heat exchanged circulating water and the heat exchanged circulating water from the load side through the geothermal heat pump device, and is filled inside, stratified according to the temperature of the circulated water filled therein, so that the upper side is high temperature and the lower side is low temperature. It characterized by comprising;

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.

1 is a schematic view showing a geothermal heat pump system according to an embodiment of the present invention, Figure 2 is a detailed view showing a geothermal heat pump system according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention FIG. 4 is a flowchart illustrating a geothermal heat pump system during heating (winter), and FIG. 4 is a flowchart illustrating a geothermal heat pump system during cooling (summer) according to an embodiment of the present invention.

As shown in FIG. 1 and FIG. 2, the geothermal heat pump system using the heat storage tank of the present invention includes a core pump 10, a heat source heat storage tank 20, a geothermal heat pump 40, and a load heat storage tank 50. ) And a control unit.

The cardiac pump 10 is perforated (punched) in the ground, the cardiac pump (11) is installed in the perforated heart pipe (12) to the ground to store the ground water stored in the ground to the heat source heat storage tank (20) As a device, it only supplies groundwater but does not circulate. The groundwater is always at a constant temperature (15 ° C.), which is useful for supplying heat sources.

Here, the cardiac pipe 12 is branched into two at one end and connected to the upper and lower sides of the heat source heat storage tank 20, respectively. Then, during heating (winter), referring to FIG. 3, groundwater is introduced into the upper portion of the heat source heat storage tank 20, and during cooling (summer), referring to FIG. 4, groundwater is lowered to the heat source storage tank 20. Inflow. At this time, the three-way valve is installed in the branching pipe 12 can be adjusted to the upper and lower ground water according to the electrical signal of the control unit.

In addition, the two cardiac wells 12 are provided up to the inside of the heat source heat storage tank 20, and diffusers are installed at each end.

In addition, at one end of the branched two cardiac pipes 12 (a portion located outside the heat source heat storage tank 20), the discharge pipe 13 may discharge the water filled in the heat source heat storage tank 20 to the outside. Each branch is formed.

The heat source heat storage tank 20 is a key technology in the present invention to temporarily store the heat source to be sent to the load side (indoor side), the heat source is stably and smoothly supplied through the cardiac pump device (10).

Here, the heat source heat storage tank 20 is stratified according to the temperature of the water filled therein so that the upper side is formed at a high temperature (15-20 ° C.) and the lower portion is formed at a low temperature (4-5 ° C.). The negative high temperature is used, and when cooling, the low temperature of the lower part is used with reference to FIG.

In addition, the heat source heat storage tank 20 is attached to a level gauge (not shown) for measuring the amount of water in the inside, a plurality of thermometers (not shown) for each layer by arbitrarily partitioning the inside of the heat source heat storage tank 20. Can be attached to measure the stratified interior. In addition, a separate drain pipe (not shown) may be further installed outside the heat source heat storage tank 20 to discharge to the outside when the temperature of the low temperature water in the lower portion is lower than the temperature input to the controller by stratification.

The geothermal heat pump device 40 is connected to the high and low temperature water transfer pipes 60 and 61 of the heat source heat storage tank 20, and the high and low temperature water and the circulating water heat exchanged at the load side 1 (high and low temperature water). ) Is similar to the geothermal heat pump apparatus 40 that is generally used as a device for heat exchange, and thus no detailed description thereof will be given.

Here, between the geothermal heat pump device 40 and the heat source heat storage tank 20, the hot water transfer pipe 60 and the cold water transfer pipe 61 is connected, the hot water transfer pipe 60 is a heat source heat storage tank 20. When connected to the inner upper side of the heating), referring to Figure 3 when heating, supply the hot water of the heat source heat storage tank 20 to the geothermal heat pump device 40, when cooling, referring to Figure 4, the load side (1) It serves to return the high temperature water heat exchanged with the heat source heat storage tank (20).

In addition, the low temperature water transfer pipe 61 is connected to the inner lower side of the heat source heat storage tank 20, and when heating, referring to FIG. 3, the low temperature water exchanged with the load side 1 is returned to the heat source heat storage tank 20. In addition, during cooling, the low-temperature water of the heat source heat storage tank 20 is supplied to the geothermal heat pump 40 with reference to FIG. 4.

Then, the difference between the load of the water to be transferred between the hot water transfer pipe 60 and the cold water transfer pipe 61 is different from the load input to the control unit can be mixed with each other to adjust the load, the heat source heat storage tank ( 20) A bypass tube 64 is further provided near the geothermal heat pump apparatus 40 to mix the hot water and the cold water, which are respectively transferred, to maintain the inside at a stratification temperature condition of 5 ° C or higher. At this time, the bypass pipe 64 is provided with a temperature control flow valve for controlling the mixing of hot water and cold water.

At this time, between the hot water transfer pipe 60 and the cold water transfer pipe 61, in the cooling, to change the role of the hot water transfer pipe 60 and the cold water transfer pipe 61, the first and second connection pipe ( 62 and 63 are connected, and one-way valves are attached to one side of the first and second connection pipes 62 and 63, respectively. In other words, as shown in Figure 4, the cold water is applied at the time of cooling is transferred to the heat source heat storage tank 20 through the low temperature water transfer pipe 61, the hot water formed as a supply pipe through the second connecting pipe (63) The low temperature water transfer pipe which is transferred to the transfer pipe 60 and supplied to the geothermal heat pump device 40, and the high temperature water heat exchanged with the circulating water of the load side 1 in the geothermal heat pump device 40 as a return pipe ( 61 is transferred to the hot water transfer pipe 60 through the first connecting pipe 62 and returned to the heat source heat storage tank 20. The three-way valve is controlled by an electrical signal of the controller in accordance with cooling and heating.

The load heat storage tank 50 is filled with the circulating water heat exchanged through the geothermal heat pump device 40 and the heat exchanged circulating water from the load side, the inside of the load heat storage tank 50 of the circulating water filled therein Stratified according to the temperature, the upper portion is a high temperature and the lower portion is a low temperature and has the same structure and function as the heat source heat storage tank 20. (The circulating water means hot water and cold water.)

Here, a first circulation water supply pipe 70 and a first circulation water return pipe 71 are connected between the load heat storage tank 50 and the geothermal heat pump device 40, respectively, and the first circulation water supply pipe 70 is provided. ) Is one side is connected to the geothermal heat pump device 40, the end is connected to the inner upper portion of the load heat storage tank 50 to supply the circulation water of the geothermal heat pump device 40 to the load heat storage tank (50) Do it.

In addition, one side of the first circulation water return pipe 71 is connected to the geothermal heat pump device 40, and an end of the first circulation water return pipe 71 is connected to an inner lower side of the load heat storage tank 50 to supply the circulation water of the load heat storage tank 50. It serves to return to the geothermal heat pump device (40).

In addition, the first circulating water supply pipe 70 and the first circulating water return pipe 71 are provided up to the inner side of the load heat storage tank 50, and diffusers are installed at each end.

At this time, between the first circulating water supply pipe 70 and the first circulating water return pipe 71 to change the roles of the first circulating water supply pipe 70 and the first circulating water return pipe 71. Three or four connecting pipes (72, 73) are connected, one side of the third, fourth connecting pipes (72, 73), one-way valve is attached to each one. In other words, as shown in Figure 4, is applied at the time of cooling is the low-temperature water is transferred through the first circulation water return pipe 71 in the geothermal heat pump device 40 through the fourth connecting pipe (73) The hot water is transferred to the circulation water supply pipe 70 and supplied to the load heat storage tank 50, and the high temperature water heat exchanged in the load heat storage tank 50 is transferred through the first circulation water return pipe 71. It is transferred to the first circulating water supply pipe 70 and returned to the geothermal heat pump device 40.

Here, between the load heat storage tank 50 and the load side (indoor side), the second circulating water supply pipe 80 and the second circulating water return pipe so that the circulating water filled in the load heat storage tank 50 is circulated after heat exchange at the load side 1. 81 are connected to each other, and the second circulation water supply pipe 80 is connected to the inner upper portion of the load heat storage tank 50 to transfer the circulation water to the load side 1. At this time, the second circulation water supply pipe 80 is distributed so as to be connected to the pipe installed on the floor of the room in order to use the indoor fan coil unit 2 and the convective radiation heat on the load side 1 with reference to FIG. Connected to the device (3).

In addition, the second circulation water return pipe 81 is connected to the inner lower side of the load heat storage tank 50 to transfer the heat exchanged heat exchanged from the load side 1 to the load heat storage tank 50. At this time, the second circulation water return pipe 81 is also connected to the indoor fan coil unit 2 and the distribution device 3 similarly to the second circulation water supply pipe 80.

In addition, between the second circulating water supply pipe 80 and the second circulating water return pipe 81, when cooling, to change the role of the second circulating water supply pipe 80 and the second circulating water return pipe 81 5,6 connection pipes (82,83) are connected, one side of the fifth, sixth connection pipes (82, 83) are attached to each one-way valve. In other words, as shown in FIG. 4, the cold water is transferred through the second circulation water return pipe 81 from the load heat storage tank 50 during cooling, and the second circulation water through the sixth connecting pipe 83. The hot water is transferred to the supply pipe 80 and supplied to the load side (indoor side), and the hot water heat-exchanged at the load side 1 is transferred through the second circulation water return pipe 81. 2 is returned to the load heat storage tank 50 is transferred to the circulation water supply pipe (80).

For reference, when heating, hot water is transferred to a fan coil unit (2) in the room and a pipe installed on the floor of the room for heating, and when cooling, cold water is supplied only to the fan coil unit (2) in the room. It is.

The controller is connected to each device and serves to control by an electrical signal.

1 is a schematic view showing a geothermal heat pump system according to an embodiment of the present invention,

Figure 2 is a detailed view showing a geothermal heat pump system according to an embodiment of the present invention,

3 is a flowchart illustrating a geothermal heat pump system during heating (winter) according to an embodiment of the present invention.

4 is a flowchart illustrating a geothermal heat pump system during cooling (summer) according to an embodiment of the present invention.

10: cardiac pump device 20: heat source heat storage tank

40: geothermal heat pump device 50: load heat storage tank

60: high temperature water transfer pipe 61: low temperature water transfer pipe

70: first circulating water supply pipe 71: first circulating water return pipe

80: second circulating water supply pipe 81: second circulating water supply pipe

Claims

A heart well pump device 10 for drilling ground to transfer groundwater having a predetermined temperature stored in the ground through the heart well pipe 12;

The groundwater transported through the cardiac pump device 10 is filled inside, but is introduced through the upper side when heated, and is introduced through the lower side when cooled, and the inside is stratified according to the temperature of the water filled therein, so that the upper side has a high temperature. The lower portion is a heat source heat storage tank 20 is formed at a low temperature;

A geothermal heat pump device 40 which heat-exchanges the high and low temperature water connected to the heat source heat storage tank 20 and the circulating water (high and low temperature water) exchanged at the load side 1;

The circulating water heat-exchanged through the geothermal heat pump device 40 and the circulating water heat-exchanged from the load side 1 are filled and filled therein, and stratified according to the temperature of the circulating water filled therein, so A load heat storage tank 50 formed at a low temperature;

Heat source storage type geothermal heat pump system using a cardiac pump device, characterized in that comprising a.

According to claim 1, Between the heat source heat storage tank 20 and the geothermal heat pump device 40,

It is connected to the inner upper portion of the heat source heat storage tank 20, when heating the hot water of the heat source heat storage tank 20 is supplied to the geothermal heat pump device 40, during cooling the high temperature heat exchanged in the geothermal heat pump device (40) Hot water transfer pipe 60 for returning the water to the heat source heat storage tank (20);

It is connected to the inner lower side of the heat source heat storage tank 20, and when the heating is returned to the heat source heat storage tank 20 of the low-temperature water heat exchanged in the geothermal heat pump device 40, when cooling the low temperature of the heat source heat storage tank 20 A low temperature water transfer pipe 61 for supplying water to the geothermal heat pump device 40;

The first and second connections that are connected between the hot water transfer pipe 60 and the cold water transfer pipe 61 are formed to change the roles of the hot water transfer pipe 60 and the cold water transfer pipe 61 during cooling. Tubes 62 and 63;

The method of claim 1, wherein between the geothermal heat pump device 40 and the load heat storage tank 50,

One side is connected to the geothermal heat pump device 40, the first end is connected to the inner upper portion of the load heat storage tank 50 to supply the circulating water of the geothermal heat pump device 40 to the load heat storage tank 50 Circulating water supply pipe 70;

One side is connected to the geothermal heat pump device 40, the first end is connected to the inner lower portion of the load heat storage tank 50 to return the circulating water of the load heat storage tank 50 to the geothermal heat pump device 40 A circulation water return pipe (71);

Is connected between the first circulating water supply pipe 70 and the first circulating water return pipe 71 is formed to change the role of the first circulating water supply pipe 70 and the first circulating water return pipe 71 when cooling Third and fourth connectors 72 and 73;

The method of claim 1, wherein between the load heat storage tank 50 and the load side (1),

A second circulation water supply pipe (80) connected to the inner upper side of the load heat storage tank (50) and transferring the circulation water to the load side (1);

A second circulation water return pipe (81) connected to the inner lower side of the load heat storage tank (50) to transfer the circulating water heat-exchanged at the load side (1) to the load heat storage tank (50);

Is connected between the second circulating water supply pipe 80 and the second circulating water return pipe 81 is formed to change the role of the second circulating water supply pipe 80 and the second circulating water return pipe 81 when cooling. Fifth and sixth connectors 82 and 83;

The method of claim 1,

A level gauge for measuring the amount of water is attached to the heat source heat storage tank 20, and a plurality of thermometers are attached to each layer by arbitrarily dividing the layers. Heat source storage type geothermal heat pump system using a cardiac pump device, characterized in that the drain pipe is further installed to discharge to.

3. The method of claim 2,

Temperature-controlled flow valves between the hot water transfer pipe 60 and the cold water transfer pipe 61 to mix the hot water and the cold water, respectively, which are transferred to maintain the inside of the heat source heat storage tank 20 in the upper and lower stratified temperature conditions. Heat source storage type geothermal heat pump system using a heart pump device, characterized in that the bypass pipe 64 is installed in communication.