KR101548009B1 - Subterranean heat-pump system - Google Patents

Abstract

[0001] The present invention relates to a geothermal heat pump system by circulating water, and it circulates the circulating water of an underground heat exchanger and a load side heat exchanger without using circulation of refrigerant by a four-way valve, Side heat exchanger and the high-pressure gas piping cycle can be used only on the high-pressure side, and the low-pressure side heat exchanger and the low-pressure gas piping cycle can be used only on the low-pressure side, thereby eliminating the high cost according to the apparatus configuration, It is intended to prevent the circulating water of the underground heat exchanger from being mixed with the circulating water of the load side heat exchanger.
The geothermal heat pump system according to the present invention includes a geothermal heat exchanger (10) for recovering geothermal heat; A load side heat exchanger (20) for performing cooling and heating; And a heat supply means for supplying geothermal heat recovered directly or indirectly through the underground heat exchanger to the load side heat exchanger by heat exchange, wherein the heat supply means comprises a high pressure side heat exchanger for supplying high temperature heat, Pressure side heat exchanger and the high-pressure side heat exchanger, the low-pressure side heat exchanger and the load side heat exchanger are connected to the high-pressure side heat exchanger or the low-pressure side heat exchanger while the underground heat exchanger is connected to the low- Pressure side heat exchanger; and control means for controlling heating and cooling by supplying high-temperature heat of the high-pressure side heat exchanger or low-temperature side of the low-pressure side heat exchanger, wherein the control means connects the high-pressure side heat exchanger and the load side heat- Side heat exchanger and the high-pressure-side heat transfer bridge Side heat exchanger and the underground heat exchanger to supply the geothermal heat to the low-pressure side heat exchanger and to return the geothermal heat to the underground heat exchanger, the load side channel to which both sides are connected to the load side heat exchanger, Side heat exchanger and a low-pressure side heat exchanger, and a plurality of connecting conduits connected to an in-ground side conduit connected to the heat exchanger for connecting the load side heat exchanger to the high-pressure side heat exchanger or the low-pressure side heat exchanger, valves for opening and closing the load side conduit, And a connection pipe for supplying at least one of a high-temperature heating medium and a low-temperature heating medium to the load side through the circulation of the heating medium without a four-way valve.

Description

[0001] Subtherranean heat-pump system [0002]

The present invention relates to a geothermal heat pump system, and more particularly, to a geothermal heat pump system capable of constituting a facility meeting the standards of both the high pressure side and the low pressure side without using a four- .

The present invention relates to a geothermal heat pump system by circulation water conversion that constitutes a water storage heat storage tank which is easy to apply in large capacity.

The present invention also relates to a geothermal heat pump system by circulating water using a heat source of a drive engine, an absorption refrigerator, and a boiler.

Geothermal is a term referring to the natural heat and the heat of the ground, which is pumped from the geothermal drilling hole formed by excavating the ground water. Generally, the ground surface is excavated at a deep depth of about 100 meters to 500 meters, The groundwater is pumped by installing a motorized pump and a water pipe in the same way as a groundwater treatment facility by using a pipe or general ground water and then using a secondary heat exchanger or a heat pump installed on the ground to heat the ground water. And the heat exchanged circulating groundwater is returned to the inside of the geothermal drilling hole by using the water return pipe.

The ground temperature keeps the temperature of 17 degrees Celsius to 18 degrees Celsius throughout the year without any change of the seasons. When the grounded water having the above temperature is pumped and the heat is transferred through the geothermal heat exchanger device, Liter and the temperature difference is 4 degrees, 4000 kilocalories per hour of heat can be secured. The temperature of the circulating groundwater that has been exchanged by the heat exchange is lowered into the geothermal excavation hole through the water return pipe, As the temperature of the circulating groundwater is lowered or higher again, the cycle can be kept usable continuously.

For this reason, the application of geothermal energy to newly constructed buildings with cooling and heating loads is rapidly expanding. Even in the case of small buildings or large buildings, it is estimated that the load factor is low and the capacity of the heat pump, which is a core component of geothermal energy, Has been installed.

These changes are becoming more and more important as the efficiency of geothermal energy is highly evaluated, and the capacity of heat pumps is also getting larger.

On the other hand, the heat pump is configured to enable cooling and heating by switching the flow direction of the refrigerant through a four-way valve. That is, the refrigerant compressed by the compressor (compressor) is selectively supplied to the first heat exchanger connected to the geothermal heat exchanger or the second heat exchanger connected to the load side heat exchanger through the four-way valve so that the load side heat exchanger functions as the evaporator or the condenser, It is constructed to enable the cooling and heating by producing hot water.

As a result, the first and second heat exchangers of the heat pump are not only used as either heat exchangers of the high pressure side or the low pressure side, but are configured to have functions of the high pressure side and the low pressure side by being switched to the high pressure side and the low pressure side in accordance with cooling and heating, .

Therefore, the heat exchanger of the heat pump should be installed in a manner suitable for the maximum pressure resistance test on the high pressure side, and the facility cost of all the materials such as the heat exchanger is inevitably increased.

Furthermore, due to the essential configuration of these four-way valves, the internal piping configuration and automatic control configuration of the heat pump are complicatedly combined and the largest proportion of the fault elements of the geothermal heat pump are also associated with the four- have.

The capacity of the heat pump is also a limiting factor in the large size due to the installation diameter and configuration limit of the four-way valve.

In addition, due to this configuration of the heat pump, a limited number of machine room pipelines are installed. As a result, the result is a generalized technology for a long period of time and a wide range of supply, so that an existing refrigeration cooling unit It has become a hindrance to prevent chilling units from being used as geothermal heat pumps.

Also, since a large-scale heat pump can not be installed for a large-scale building, a large-capacity heat pump is installed in a large amount, resulting in the use of excessive machine room area and space. .

Therefore, it is necessary to develop the technology of the geothermal system using the refrigeration cooling unit or chilling unit which is manufactured and operated with the generalized technology.

The following Patent Document 1 has an advantage in that a water pipe circulating between a high pressure side and a low pressure side is shared by a three-way valve and does not use a four-way valve, but the three-way valve is not structurally closed There is a problem that the water passing through the high pressure side and the water passing through the low pressure side are mixed and the efficiency of the heat pump is lowered as a result, that is, theoretically but not realistic.

In addition, the geothermal system has a plurality of geothermal heat exchangers installed through a plurality of geothermal systems and is also applied to a plurality of loads. However, Patent Document 1 has a problem that it can not be used for a large number of underground heat exchangers and a plurality of loads.

Meanwhile, when the capacity of the heat pump is selected based on the maximum cooling / heating load in the process of operating a large-capacity geothermal system, since the equipment capacity becomes excessively large, it becomes not economical and the operation time of the heat pump is increased, The heat stored in the heat storage tank is stored in the heat storage tank, and the heat storage is used for the maximum heating and cooling time. In this case, there is a need to operate a large-capacity heat pump, but it has been difficult to commercialize the heat pump due to the limitation of the production capacity of the heat pump.

Also, in the case of the cooling / heating system using the arrangement of the heat pump drive engine or using the geothermal heat and the cogeneration together, it is necessary to construct a piping system for temporarily storing the generated heat in the heat storage tank and utilizing it for the maximum cooling / heating load.

Registration No. 10-0722542

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned needs and problems, and it is an object of the present invention to provide an air conditioner that circulates circulating water in an underground heat exchanger and a load side heat exchanger without circulating refrigerant by a four- Side heat exchanger and the high-pressure gas piping cycle can be used only on the high-pressure side, and the low-pressure side heat exchanger and the low-pressure gas piping cycle can be used only on the low-pressure side, thereby eliminating the high cost according to the apparatus configuration, There is provided a geothermal heat pump system in which circulation water of a geothermal heat exchanger and circulation water of a load side heat exchanger are not mixed with each other.

Another object of the present invention is to provide a geothermal excavator using a water chilling unit which is already installed in an existing building, And to construct a geothermal system easily.

In addition, the water heat storage tank is separately constructed, and circulated water heat-exchanged in the geothermal heat pump side heat exchanger can be stored and utilized in the water heat storage tank.

In addition, a piping system for storing the arrangement of the heat pump driving engine in the water heat storage tank and storing the arrangement in the water heat storage tank or storing the arrangement generated from the generator driving engine in the water storage heat storage tank for use in cooling / And to establish the

The geothermal heat pump system according to the present invention is characterized by comprising an underground heat exchanger for recovering geothermal heat; A load side heat exchanger for performing cooling and heating; And a heat supply means for supplying geothermal heat recovered directly or indirectly through the underground heat exchanger to the load side heat exchanger by heat exchange, wherein the heat supply means comprises a high pressure side heat exchanger for supplying high temperature heat, Pressure side heat exchanger and the high-pressure side heat exchanger, the low-pressure side heat exchanger and the load side heat exchanger are connected to the high-pressure side heat exchanger or the low-pressure side heat exchanger while the underground heat exchanger is connected to the low- Pressure side heat exchanger; and control means for controlling heating and cooling by supplying high-temperature heat of the high-pressure side heat exchanger or low-temperature side of the low-pressure side heat exchanger, wherein the control means connects the high-pressure side heat exchanger and the load side heat- Side heat exchanger and the high-pressure-side heat transfer bridge Side heat exchanger and the underground heat exchanger to supply the geothermal heat to the low-pressure side heat exchanger and to return the geothermal heat to the underground heat exchanger, the load side channel to which both sides are connected to the load side heat exchanger, Side heat exchanger and a low-pressure side heat exchanger, and a plurality of connecting conduits connected to an in-ground side conduit connected to the heat exchanger for connecting the load side heat exchanger to the high-pressure side heat exchanger or the low-pressure side heat exchanger, valves for opening and closing the load side conduit, And a connection pipe for supplying at least one of a high-temperature heating medium and a low-temperature heating medium to the load side through the circulation of the heating medium without a four-way valve.

The present invention is characterized in that a separate water storage tank is provided so that heat-exchanged circulating water can be supplied to the load side.

Further, the present invention is characterized in that a water return pipe that has passed through the arrangement heat exchanger is connected to the water heat storage tank so that the arrangement of the drive engine can be used.

According to the geothermal heat pump system according to the present invention, since the four-way valve can be eliminated from the heat pump, the failure rate of the geothermal heat pump can be remarkably reduced, It is possible to prevent the malfunction of the cooling / heating mode through the construction of the watertight piping and the valve system so that the heating medium for heat exchange on the load side is not mixed with each other.

In addition, it is possible to construct an inexpensive geothermal system by using a conventional freezing cooling unit or a water chilling unit which is widely used as a geothermal heat pump, and also to apply the geothermal load factor to a large building having a large capacity heating and cooling load .

In addition, the high-pressure side and the low-pressure side of the heat pump can be distinguished from each other, so that they can be operated under the corresponding pressure conditions at all times.

It is possible to simplify the piping connected to each machine room in the geothermal heat pump system composed of a plurality of ground heat exchangers and a plurality of heat pumps to reduce the construction cost due to the piping equipment and to enlarge the heat pump, It is possible to obtain an effect that the inconvenience of the space complexity and the maintenance caused by installing the heat pumps of a large quantity can be solved.

In addition, since the heat-exchanged circulating water can be stored in the water storage tank, not only the response in the case of maximum cooling and heating load becomes available, but also the arrangement of the driving engine and the cogeneration engine can be stored together in the water storage tank, It is effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view of a geothermal heat pump system according to a first embodiment of the present invention, in which a circulating water is switched. FIG.
FIG. 2 is an exemplary view of a geothermal heat pump system according to the first embodiment of the present invention, in which the circulating water is converted, and an open type geothermal heat exchanger is applied. FIG.
3 is a configuration diagram of a heat supply unit applied to the geothermal heat pump system by switching the circulation water according to the first embodiment of the present invention.
FIG. 4A is a flowchart of a heating operation by a geothermal heat pump system by switching the circulation water according to the first embodiment of the present invention. FIG.
FIG. 4B is a flowchart of a cooling operation by the geothermal heat pump system by switching the circulation water according to the first embodiment of the present invention. FIG.
5A to 5C are diagrams showing a circular pipe system as a geothermal heat pump system according to a second embodiment of the present invention by switching the circulation water.
Is a pipe diagram in which the geothermal heat pump system according to the second embodiment of the present invention is constituted by a circulation type.
FIG. 6 and FIG. 7 are diagrams illustrating another embodiment of the geothermal heat pump system according to the third embodiment of the present invention,
FIG. 6 is a time chart for cooling,
Fig. 7 shows the heating time.
8 and 9 are diagrams showing examples in which a water storage tank is applied to a geothermal heat pump system according to the fourth embodiment of the present invention,
Fig. 8 is a view showing a case where cold water is produced,
Fig. 9 shows the hot water production.
FIG. 10 is a view showing a configuration of a water heat storage tank applied to a geothermal heat pump system by circulating water conversion according to Embodiment 4 of the present invention; FIG.
11 is a view showing an example in which a cooling wall is formed in a water storage tank applied to a geothermal heat pump system according to a fourth embodiment of the present invention.
12 is an exemplary view in which two water heat storage tanks are provided in the geothermal heat pump system according to the fourth embodiment of the present invention.
Fig. 13 is an exemplary view in which the geothermal heat pump system by circulating water conversion according to the fifth embodiment of the present invention uses waste heat of a drive engine or the like. Fig.
Fig. 14 is an exemplary view showing a geothermal heat pump system according to a fifth embodiment of the present invention in which a circulation water is switched to a hot water tank; Fig.
15A is an exemplary view of an absorption refrigerator and a boiler applied to a geothermal heat pump system according to a fifth embodiment of the present invention.
Fig. 15B is a diagram to which a configuration using a circulating pipe, a driving engine, and exhaust gas heat is applied to a geothermal heat pump system by circulating water according to a fifth embodiment of the present invention. Fig.
16A and 16B are diagrams showing heating and geothermal natural cooling in which a geothermal heat pump and a water storage heat exchanger are applied to a geothermal heat pump system according to a sixth embodiment of the present invention.
17A to 17C are views showing a cold water tank and a hot water tank as water storage heat tanks in a geothermal heat pump system according to a seventh embodiment of the present invention.
FIG. 18 is a piping diagram in which a shutoff valve is applied to a geothermal heat pump system by switching the circulation water according to the present invention. FIG.

≪ Example 1 >

As shown in FIGS. 1 and 2, the geothermal heat pump system according to the present embodiment includes a geothermal heat pump 10 for recovering geothermal heat; A load side heat exchanger (20) for performing cooling and heating; And heat supply means for supplying heat to the load side heat exchanger (20) or heat of the underground heat exchanger (10) to the load side heat exchanger (20).

The geothermal heat exchanger 10 is both vertically hermetically sealed in FIG. 1 and open in FIG. 2. 2, a separate geothermal heat exchanger 10-3 for indirectly exchanging heat between the geothermal heat exchanger 10 and the heat pump 30 of the heat supply unit may be applied. Of course, although not shown in the drawings, a separate geothermal heat exchanger may be applied even in the case of a closed type.

The load-side heat exchanger 20 receives the heat of the heat supply means or the geothermal heat exchanger 10 to generate hot water or cold water (or warm or cool air) to heat or cool the room.

The heat supply means comprises a heat pump (30) and a control means (40).

3, the heat pump 30 includes a compressor 31 for compressing the refrigerant to a high temperature and a high pressure, a condenser 32 for condensing the refrigerant while passing through the high temperature and high pressure refrigerant compressed by the compressor 31, An expansion valve 33 for reducing the pressure of the refrigerant that has passed through the condenser 32, and an evaporator 34 for evaporating the low-temperature and low-pressure refrigerant that has passed through the expansion valve 33. That is, the heat pump 30 applied to the present invention does not constitute a four-way valve of a heat pump applied to a geothermal system.

Since the heat pump 30 of the present invention can be replaced with a commonly used high-pressure side heat exchanger and a low-pressure side heat exchanger, the scope of the present invention is also included in the scope of the constitution of the high-pressure side heat exchanger and the low-

The compressors (compressors) of the heat pump 30 normally employ a reciprocating type when the capacity is small and a screw type when the capacity is large. Generally, when the turbocompressor is installed and operated in a large-capacity facility, the COP of the heat pump (30) can be greatly increased when the refrigeration operation is carried out at a temperature of 100 freezing tones (1 freezing tone refers to 3,024 Kcal / h) . For example, when a reciprocating or screw type compressor is applied to a heat pump (30), the coefficient of performance of the heat pump with 200 refrigerated tonnes of turbo compressors currently operating with waste heat recovery heat pumps is 3.0 to 4.0, to be. On the other hand, the application of 4-way valve in the turbo compressor is technically limited due to the diameter of the piping system and the system configuration requirements. Therefore, when the turbocompressor is installed and operated in the heat pump 30 in a large-capacity geothermal cooling / heating system according to the present invention, the operating power ratio can be reduced by 50% or more as compared with the conventional type heat pump 30 It is possible to reduce the operation management cost in the normal time and to shorten the period of paying back the investment cost of the facility. Thus, the application of the geothermal heat, which is a new and renewable thermal energy, can be greatly expanded.

That is, the compressor of the heat pump used in the present invention is not limited to the turbo compressor, and the turbo compressor can be effectively applied.

In addition, since the cold water pipe line and the hot water pipe line can be clearly distinguished from each other in the case of the piping insulation material, the present invention can be applied according to the characteristics of the temperature range of the piping insulation material, thereby greatly improving the efficiency of temperature insulation.

The control means 40 connects the load side heat exchanger 20 to the condenser 32 or the evaporator 34 while the underground heat exchanger 10 is connected to the evaporator 34 or the condenser 32 To control the heating and cooling by supplying the high heat of the condenser 32 or the low heat of the evaporator 34 to the load side heat exchanger 20 and comprises the following pipes and valves.

The piping includes a load side supply pipe 41 for connecting the condenser 32 and the load side heat exchanger 20 to supply the heat of the high pressure side heat medium to the load side heat exchanger 20 and a load side return pipe 42 for returning to the condenser 32 And a geothermal-side supply pipe 43 and a geothermal-side water-return pipe 44 connecting the evaporator 34 and the geothermal heat exchanger 10 to supply and return the geothermal heat.

According to such a piping, only the high temperature of the heat medium passing through the high-pressure side condenser 32 is supplied to the load side heat exchanger 20, and the low-pressure side evaporator 34 is supplied to the load side heat exchanger 20 through the following piping And supplies the low temperature of the passing heat medium.

The first and second connection pipes 45 and 46 connect the geothermal heat return pipe 44 and the load side supply pipe 41 at different positions, respectively.

The third and fourth connecting pipes 47 and 48 connect the geothermal-side supply pipe 43 and the load-side return pipe 42 at different positions, respectively.

And valve means for selectively opening and closing the first to fourth connection pipes (45, 46, 47, 48).

The valve means includes a first valve (V1) installed between the points where the first and second connecting pipes (45, 46) are connected to the geothermal heat return pipe (44) and which opens and closes the geothermal heat return pipe (44) A second valve V2 installed between the points where the third and fourth connection pipes 47 and 48 are connected to the geothermal-side supply pipe 43 to open and close the geothermal-side supply pipe 43, (V3, V4, V5, and V6) for opening and closing the first and second connection pipes 45, 46, 47 and 48, respectively, and the first and second connection pipes 45 and 46 are connected to the load side supply pipe 41 A seventh valve V7 for opening and closing the load side supply pipe 41 and a third valve 55 connected between the load side return pipe 42 and the load side return pipe 42, And an eighth valve (V8) for opening and closing the valve (42).

The operation of the geothermal heat pump system according to the first embodiment of the present invention is as follows.

1. Heating mode.

As shown in FIG. 4A, when the heating mode is selected, the first, second, seventh and eighth valves V1, V2, V7 and V8 are opened and the third to sixth valves V3, V4, V5 and V6 are closed And the underground heat exchanger 10, the heat pump 30 and the load side heat exchanger 20 operate.

Thus, the geothermal heat recovered through the geothermal heat exchanger 10 is recovered through a geothermal heating medium (heating medium circulating in the geothermal heat exchanger 10), and the geothermal heating medium is directly or indirectly separated from the evaporator 34 Heat exchange is carried out in the same way.

On the other hand, the heating medium of the heat pump 30 is heat-exchanged with the underground heating medium recovered from the geothermal heat while passing through the evaporator 34, evaporated, and then flows into the compressor 31 and is compressed to high temperature and high pressure through the compressor 31 And is supplied to the condenser 32.

The load side heat medium circulating in the load side heat exchanger 20 is supplied to the condenser 32 via the load side return pipe 42 to be heat exchanged with the heat medium flowing through the condenser 32 to rise to a high temperature, And the heating mode is performed.

2. Cooling mode.

As shown in FIG. 4B, when the cooling mode is selected, the first, second, seventh and eighth valves V1, V2, V7 and V8 are closed and the third to sixth valves V3, V4, V5 and V6 are opened, The geothermal heat exchanger 10, the heat pump 30, and the load side heat exchanger 20 operate.

Therefore, the underground heat exchanger 10 is connected to the condenser 32 via the first and third connecting pipes 45 and 47, and the load side heat exchanger 20 is connected to the condenser 32 via the second and fourth connecting pipes 46 and 48 Is connected to the evaporator (34).

As a result, the load side heat medium of the load side heat exchanger 20 is heat-exchanged with the low temperature heat medium passing through the evaporator 20 and is lowered to the low temperature, and then returned to the load side heat exchanger 20 to perform the cooling mode.

≪ Example 2 >

As shown in FIGS. 5A to 5C, the geothermal heat pump system according to the present embodiment is characterized in that the pipe is arranged in a circle to increase the space utilization of the machine room The heat pump 30 is installed on the bottom of the machine room and the heat exchanger (condenser, evaporator) of the underground heat exchanger 10, the load side heat exchanger 20 and the heat pump 30 is connected to the first and second circulation pipes C -1, C-2).

More specifically, the two or more underground heat exchangers 10 are connected to the supply header 10-1 and the return header 10-2, respectively (of course, only one underground heat exchanger 10 may be installed In this case, the supply header 10-1 and the return header 10-2 are not used.

The first and second circulation pipes C-1 and C-2 are installed on the ceiling of the machine room, respectively. The first and second circulation pipes C-1 and C- And the second circulation pipe C-2 is connected to the geothermal heat-exchanging pipe 44 and the load-side supply pipe 41. The load-

The load side supply pipe 41 and the load side return pipe 42 are connected to the first and second circulation pipes C-3 and C-3 in a state where they are connected to the second circulation pipe C-2 and the first circulation pipe C- , C-4) through the condenser (32).

The geothermal-side supply pipe 43 and the geothermal-side return pipe 44 are connected to the third and fourth circulation pipes C-1 and C-2 in a state where they are connected to the first and second circulation pipes C- -5, and C-6, respectively.

Thus, even though the geothermal side is connected only to the evaporator 34 and the load side is connected only to the condenser 32, it can perform the same action as the conventional four-way valve through the eight valves V1, V2, V3, V8.
The valve means includes a first valve (V1) installed between a place where the geothermal side supply pipe of the first circle circulation pipe (C-1) is connected and a place where the third circle connection pipe is connected, A second valve (V2) installed between a place where a geothermal-side water return pipe of the circulation pipe (C-2) is connected and a place where the fourth circle connecting pipe is connected, a load side return pipe of the first circulation pipe A third valve (V3) installed between a place where the first circulation pipe is connected and a place where the third circle connection pipe is connected, a place where the load side supply pipe of the second circle circulation pipe is connected, A fifth valve V5 installed between the connection point of the geothermal heat-exchanger pipe of the second circle circulation pipe and the connection point of the second circle connection pipe, A sixth circulation pipe connected to the first circulation pipe and a second circulation pipe connected to the first circulation pipe, A seventh valve (V7) installed between a place where the load-side supply pipe of the second circle circulation pipe is connected and a place where the second circle connection pipe is connected, a first valve (V7) And an eighth valve (V8) installed between a place where the pipe is connected and a place where the first circle connecting pipe is connected.

The first, second, seventh and eighth valves V1, V2, V7 and V8 operate in the same opening or closing manner and the third, fourth, fifth and sixth valves V3, V4, V5 and V6 operate in the same opening / But opposite to the first, second, seventh and eighth valves (V1, V2, V7, V8).

That is, the first, second, seventh and eighth valves V1, V2, V7 and V8 are opened and the third, fourth, fifth and sixth valves V3, V4, V5 and V6 are closed, The first, second, seventh and eighth valves V1, V2, V7 and V8 are closed and the third, fourth, fifth and sixth valves V3, V4, V5 and V6 are closed, So that the load side is connected to the evaporator 34.

5A, only one heat pump 30 is shown, but two or more (three are shown in the drawing) heat pumps 30 are connected to the first and second circulation pipes C-1 and C-2 ). ≪ / RTI > FIG. 5B shows the water heat storage tank 100, and the water storage heat storage tank 100 will be described in detail in the following embodiments. That is, the water storage tank 100 can be selectively configured.

When two or more geothermal heat exchangers 10-3 and two or more heat pumps 30 are used, the same amount of heat medium is circulated in two or more geothermal heat exchangers 10-3 and two or more heat pumps 30 And a constant flow valve (in which the constant flow valve is not shown in FIG. 5B) should be provided for this purpose. FIG. 5C is a schematic diagram of a piping for deriving the effect of the constant flow rate valve through a pipeline of a pipeline without using a constant flow rate valve. When the position of the geothermal heat exchanger 10-1 is taken as a reference, three third- The tube C-5 is connected to the evaporator 34 of the heat pump 30 in order and the three fourth circle connecting pipes C-6 flow in the reverse order through the first reverse return pipe R- The heat medium supplied to the heat pump 30 at the position closest to the geothermal heat exchanger 10-3 is connected to the first reverse return pipe R-1 so as to be returned most late.

The second circular connection pipe C-4 on the side of the water storage and heat storage tank 100 is also configured to be returned in the reverse order to the supply order by the first circular connection pipe C-3 through the second reverse return pipe R- do.

≪ Example 3 >

6 shows that the geothermal heat pump system according to the present embodiment of the present invention converts geothermal heat by a plurality of geothermal heat exchangers 10 and supplies the recovered geothermal heat to two or more high pressure side and low pressure side heat exchangers (Heat exchanger 32 and evaporator 34), and then supplied to a plurality of load side heat exchangers 20.

The present embodiment is provided with a geothermal supply side main header 50-1 connected to a plurality of underground heat exchangers 10 through respective geothermal side supply pipes 11 to collect a heat medium recovered from a plurality of underground heat exchangers 10, , A plurality of submerged heat exchangers (10) are connected to the geothermal heat exchanger (12), and the heat medium exchanged with the high pressure side or low pressure side heat exchanger (32, 34) is dispersed in each submerged heat exchanger The geothermal heat recovery side main header 50-2 and the plurality of load side heat exchangers 20 are connected to the high pressure side or low pressure side heat exchangers 32 and 34 via the load side supply pipes 21, Side main header 60-1 for distributing and supplying the heat to the heat exchanger 20 and a plurality of load side heat exchangers 20 connected to the load side heat exchangers 20 through the load side water heat exchanger 22, A load-return-side main header 60-2 for returning the heating medium to the high-pressure side or low-pressure side heat exchanger 32, It is configured.

That is, the geothermal circulation system includes a geothermal heat exchanger 10 (supply port), a geothermal supply side main header 50-1, a high pressure side or low pressure side heat exchanger 32, 34, ) -Underground heat exchanger 10 (a water return port).

 The circulation system of the load side is composed of a load side heat exchanger 20 (return port), a load return side main header 60-2, a high pressure side or low pressure side heat exchanger 32, 34, a load side main header 60-1, Side heat exchanger (supply port).

In this configuration, the main header 50-1, 50-2 on the geothermal side and the main header 60-1, 60-2 on the load side are connected to the high-pressure side and low-pressure side heat exchangers 32, Pressure service side service header 70-1, the low pressure return side service header 70-2, the high pressure return side service header 70-1, the low pressure return side service header 70-2, and the high pressure return side service header 70-2. A supply side service header 80-1 and a high pressure return side service header 80-2.

The low pressure supply side service header 70-1 and the low pressure return side service header 70-2 are connected only to the low pressure side heat exchanger 34 (evaporator), and the high pressure supply side service header 80-1 and the high pressure return side service header 70-1, The header 80-2 is connected only to the high-pressure side heat exchanger 32 (condenser).

The cooling is performed by connecting the load-supply-side main header 60-1 and the load-return-side main header 60-2 to the low-pressure side heat exchanger 34 (evaporator), and the heating is performed by the high-pressure side heat exchanger 32 ). At this time, the geothermal heat supply side main header 50-1 and the geothermal heat recovery side main header 50-2 are connected to the opposite heat exchanger.

Accordingly, the low pressure supply side service header 70-1 and the high pressure return side service header 80-2 (the high pressure supply side service header 80-1 is also possible by reversing the flow of the heating medium) Pressure return side service header 70-2 and the high pressure supply side service header 80-1 are selectively connected to the geothermal heat recovery side main header 60-2 and the load return side main header 60-2, And the load-supply-side main header 60-1.

Hereinafter, the main header (50-1, 50-2, 60-1, 60-2) and the service header (70-1, 70-2, 80-1, 80-2) .

The low pressure supply side service header 70-1 is connected to the geothermal heat supply side main header 50-1 and the load return side main header 60-2 through the first piping 71. [

The first piping 71 is branched from the first piping 71a and the first piping 71a connected to the low pressure supply side service header 70-1 and connected to the geothermal heat supply side main header 50-1 First and second pipelines 71b and 71c connected to the load return side main header 60-2 respectively and first to third pipings 71b and 71c, 2 valve 71d and a first-third valve 71e.

This first piping 71 is for simplifying the structure and two different pipings connect the low pressure supply side service header 70-1 to the geothermal heat supply side main header 50-1 and the load return side main header 60- 2, respectively.

Pressure return side service header 70-2 is connected to the geothermal heat recovery side main header 50-2 and the load supply side main header 60-1 through the second piping 72. [

The second piping 72 is connected to the second to the second pipelines 72a to 72c in the same manner as the first piping 71 and the second to second pipings 72b and 72c, And a second-second valve 72d and a second-third valve 72e, respectively.

The high pressure supply side service header 80-1 is connected to the geothermal heat recovery side main header 50-2 and the load supply side main header 60-1 through the third piping 81. [

The third pipe 81 is connected to the third to the third pipes 81a, 81b and 81c in the same manner as the first and second pipes 71 and 72, And a third-second valve 81d and a third-third valve 81e for opening and closing the first to third valves 81b, 81c, respectively.

The high pressure return side service header 80-2 is connected to the geothermal heat supply side main header 50-1 and the load return side main header 60-2 through the fourth piping 82. [

The fourth piping 82 is branched from the fourth piping 82a and the fourth piping 82a connected to the high pressure return side service header 80-2 and connected to the geothermal heat supply side main header 50-1, 4-2 and 4-3 pipes 80b and 80c connected to the load return side main header 60-2 and fourth and second and fourth pipings 80b and 80c, -2,4-3 valves 80d and 80e.

The cooling and heating operations according to this embodiment are as follows.

The opening and closing state of the valve during cooling and heating according to the present embodiment is shown in Table 1 below.

division Open valve Closed valve Cooling condition 71e, 72e, 81d, 82d 71d, 72d, 81e, 82e Heating condition 71d, 72d, 81e, 82e 71e, 72e, 81d, 82d

1. Cooling mode (see FIG. 6).

In cooling, under the valve opening / closing condition as shown in Table 1, the circulation system on the load side is connected to the low pressure side heat exchanger 34, the low pressure return side service header 70-2, the load side main header 60-1, Side heat exchanger 20, a load return-side main header 60-2, a low-pressure supply side service header 70-1, and a low-pressure side heat exchanger 34 so that cooling is performed in the load side heat exchanger 20. [

At this time, the circulation system on the geothermal side includes a high pressure side heat exchanger 32, a high pressure supply side service header 80-1, a geothermal heat recovery side main header 50-2, a geothermal heat exchanger 10, -1) -High pressure return side service header 80-2 and a high pressure side heat exchanger 32.

2. When heating (refer to FIG. 7)

At the time of heating, under the valve opening and closing conditions as shown in Table 1, the circulation system on the load side is connected to the high pressure side heat exchanger 32, the high pressure supply side service header 80-1, the load supply side main header 60-1, The heat exchanger 20, the load return-side main header 60-2, the high-pressure return-side service header 80-2, and the high-pressure side heat exchanger 32 are heated by the load side heat exchanger 20.

At this time, the circulation system on the geothermal side includes a low pressure side heat exchanger 34, a low pressure return side service header 70-2, a geothermal heat recovery side main header 50-2, a geothermal heat exchanger 10, 50-1) a low pressure side service header 70-1 and a low pressure side heat exchanger 34. [

In the above cases, the geothermal heat exchanger should be regarded as a geothermal heat exchanger, or if the circulating water circulated in the geothermal heat exchanger is heat-exchanged to a separate heat exchanger, the geothermal heat exchanger should be regarded as including the heat exchanger.

<Example 4>

As shown in FIG. 8, the geothermal heat pump system according to the present embodiment is capable of supplying sufficient heat to the load without enlarging the heat pump through the water storage heat exchanger 100, The main header 60-1 (shown in Fig. 6) and the main header 60-2 of the load return side of the feed and reversion service header 70 -1, 70-2, 80-1, 80-2) to store the hot or cold water, and the heat of the hot water or the cold water connected to the load side is supplied to the load.

FIG. 8 shows the production of cold water, and FIG. 9 shows the production of hot water.

8, when the cold water is produced, the water storage heat exchanger 100 forms a flow path connected to the low pressure return side service header 70-2, the evaporator 34, and the low pressure side service header 70-1, 34), and the cold water is supplied to the load by storing the low-temperature heat medium whose temperature has been lowered.

9, when the hot water (heating, hot water supply, etc.) is produced, the water storage heat exchanger 100 is connected to the high pressure return side service header 80-1, the condenser 32 and the high pressure side service side service header 80-2. And supplies the hot water to the load by storing the high temperature heat medium whose temperature has been increased while passing through the condenser 32. [

As shown in FIG. 10, the water storage and heat storage tank 100 is formed, for example, of concrete at different heights in the water storage and heat storage tank main body 110 and the water storage and heating tank main body 110 having a storage space therein, And an upper distributor 120 and a lower distributor 130 that form the first and second circulation pipes 121 and 131 so as to be circulated to each other.

In order to increase the uniformity of the water temperature distribution through the mixing effect of the heating medium by the convection, the water storage and heat storage tank 100 is connected to the upper distributor 120 in the cooling condition, For example, the first and second circulation pipes 122 and 132 and the first and second circulation pipes 121 and 131 and the first and second circulation pipes 122 and 132, which connect the first and second circulation pipes 121 and 131, The first to fourth valves 121a, 131a, 122a and 132a are opened and closed.

The opening and closing state of the valve according to the condition by such a configuration is as follows.

Opening and closing states of the valves in the cooling condition are open: first valve 121a and second valve 131a, and closed third valve 122a and fourth valve 132a.

The open and closed states of the valve in the heating condition are open: the third valve 122a, the fourth valve 132a, and the closing: the first valve 121a and the second valve 131a.

In order to achieve the above object, a disturbance pump may be constructed in the water storage tank 100. The disturbance pump mixes the heating medium in the water storage tank 100 to make the temperature distribution uniform.

As shown in FIG. 11, the water storage and heat storage tank 100 has one or more flow-through walls 140 (three of which are shown in a zigzag form) so as to increase the residence time of the heating medium and increase the uniformity of the temperature distribution. . The flow-through wall 140 has a structure in which one side is connected to the water storage and heat-collecting body 110 but the other side is not connected so that the flow direction of the heating medium can be switched.

Also, as shown in FIG. 12, two or more water storage heaters 100-1 and 100-2 may be partitioned by a heat insulating material or the like. In the case of the two or more water storage heat generators 100-1 and 100-2, there is an advantage that the operation convenience can be improved in the case of a load condition in which cooling and heating are simultaneously performed in the same building.

&Lt; Example 5 >

13, the present embodiment recovers the drive heat and / or exhaust heat of the heat pump drive engine 35 (or the cogeneration plant engine) and supplies the drive heat and / or exhaust heat to the heat storage tank 100, . Hereinafter, the driving heat of the driving engine 35 and the exhaust heat of the exhaust gas are collectively described together. Of course, it is also possible to use only one of the driving heat of the driving engine 35 and the exhaust heat of the exhaust gas.

The heat exchanging unit using the driving engine 35 as a heat source is composed of an engine side heat exchanger 150 that recovers the driving heat of the driving engine 35 and an exhaust gas heat exchanger 160 that recovers the exhaust gas heat.

The engine-side heat exchanger 150 recovers the heat of the heat medium flowing through the engine heat recovery pipe 151, the engine heat recovery pipe 151 for circulating the drive engine 35 to recover the heat generated in the drive engine 35, An engine heat supply pipe 152 for supplying exhaust gas to the exhaust gas heat exchanger 160 and an exhaust gas heat exchanger 160 for recovering the exhaust gas arrangement using the heat supplied through the engine heat supply pipe 152, And an array supply pipe 161 for supplying the liquid to the cell array 100.

The drive engine 35 is to provide a driving force to the compressor of the heat pump, thereby generating high-temperature drive heat. The engine heat recovery pipe 151 surrounds the drive engine 35, and a heat medium such as water is circulated therein to recover the heat of the drive engine 35 through the heat medium.

The engine heat supply pipe 152 and the arrangement supply pipe 161 are connected to each other so as to be in fluid communication with each other to form a pipeline and the heat medium passes through the engine side heat exchanger 150 and heat exchanges with the heat medium flowing along the engine heat recovery pipe 151 The waste heat of the drive engine 35 is recovered and the exhaust gas is recovered while passing through the exhaust gas heat exchanger 160 and then returned to the storage tank 100 through the arrangement supply pipe 161.

The exhaust gas heat exchanger 160 is connected to the engine-side heat exchanger 150 in series. However, the exhaust gas heat exchanger 160 may be independently configured not to exchange heat with the engine-side heat exchanger 150 in addition to the series system.

The exhaust gas heat exchanger 160 is installed in an exhaust system (exhaust pipe or the like) of the exhaust gas and recovers heat of the exhaust gas through heat exchange of the heat medium.

14 shows an example in which the water storage tank 100 and the hot water tank 200 are applied together and the engine side heat exchanger 150 is configured to recover the heat of the drive engine 35 through the engine heat recovery pipe 151 And the engine-side heat exchanger 150, the exhaust gas heat exchanger 160 and the hot water tank 200 are connected to each other through a pipe (engine heat supply pipe 152, array supply pipe 161, A water storage heat supply pipe 163 and a water storage heat storage water return pipe 164 which are connected to the arrangement supply pipe 161 and the arrangement return pipe 162 are connected to the heat pump 30 to heat the heat of the heat pump 30 100 so as to supply the arrangement to the water storage tank 100 as well. At this time, three-way valves 163a and 164a are provided in the inlet-side connection portion of the water storage heat supply pipe 163 and the water storage heat storage water return pipe 164 so that the heating medium is distributed to the water heat storage tank 200 and the water storage heat storage tank 100.

On the other hand, due to the tendency of the heat pump to be used for a large load progressively as the size of the residential space becomes larger and the demand of the heat pump is increased, the load of the heat pump is increased accordingly. The boiler 300 (a dedicated boiler for supplying heat to the water storage and heat generating vessel 100) as well as the drive engine 35 as the auxiliary heat source supply means, the absorption type cold and hot water generator (or water Chilling unit) 400 may be configured together.

The driving engine 35, the boiler 300, and the absorption type cold / hot water heater 400 are each constructed through a pipe of a heating medium so as to supply heat to the water storage tank 100.

15B is a schematic view showing a structure of a plurality of (three shown) geothermal heat exchangers 10-3 and a heat pump 30, a circular pipe, an engine side heat exchanger 150, an exhaust gas heat exchanger 160, 200 and a boiler 300. The engine side heat exchanger 150 and the exhaust gas heat exchanger 160 of the auxiliary heat source means are connected in series with the hot water tank 200 and the water storage heat exchanger 100 And a plurality of pipes connected to each other.

In addition, as shown in FIG. 15B, when a heat pump using cogeneration or a drive engine is operated, when the heating load is greater than the cooling load, the ground temperature at which the underground heat exchanger is installed is excessively lowered during the year, The geothermal heat exchanger 10-3 is arranged to recover the arrangement of the cogeneration or the drive engine and to supply the generated heat to the geothermal heat exchanger 10-3 so that the ground temperature of the geothermal heat exchanger can be raised. 3 is provided on the return side of the exhaust gas recirculation path P1 and the exhaust gas recirculation path P1 is connected to the return side of the exhaust gas recirculation path P1, So that the heating medium is supplied to the geothermal heat exchanger 10-3.

&Lt; Example 6 >

5, the first circle circulation pipe C-1 and the third circle connection pipe C-5 are connected to each other through the three circulation pipes C-1 and C- The second circle circulation pipe C-2 and the fourth circle connection pipe C-6 are connected by a three-way valve CV-2, The heat recovered from the underground heat exchanger can be directly supplied to the water storage tank 100 without operating the heat pump 30 through the valves CV-1 and CV-2, or the heat pump 30 can be operated The heat medium can be divided and supplied to the heat pump 30 and the water heat storage tank 100 together.

Fig. 16A shows heating, and the opening and closing of the valves at this time is the same as that described in Fig. That is, the first, second, seventh and eighth valves V1, V2, V7 and V8 are opened and the third, fourth, fifth and sixth valves V3, V4, V5 and V6 are closed, The first, second, seventh and eighth valves V1, V2, V7 and V8 are closed and the third, fourth, fifth and sixth valves V3, V4, V5 and V6 are closed, So that the load side is connected to the evaporator 34.

6B, 7 and 8 valves (V5, V2, V3, and V4) are opened, and the first, second, third, The heat recovered from the underground heat exchanger 10 is supplied to the water storage heat exchanger 100 directly without passing through the heat exchangers 32 and 34 of the heat pump 30.

&Lt; Example 7 >

As shown in FIGS. 17A to 17C, the present embodiment is characterized in that the water storage tank is divided into the cold water tank 100A and the hot water tank 100B.

That is, both the cold water tank 100A and the hot water tank 100B are used as hot water tanks for heating only, and both the cold water tank 100A and the hot water tank 100B are used as cold water tanks for cooling only. Cold water is stored in the cold water tank 100A and hot water is stored in the hot water tank 100B.

The cold water tank 100A and the hot water tank 100B are respectively connected to the ends of the first and second circulation circulation pipes C-1 and C-2 so that the cold water tank 100A is connected to the evaporator 34, The hot water tank 100B is connected to the condenser 32 while the cold water tank 100A and the condenser 32 are connected through the first and second switching pipes C-7 and C-8, Is connected to the evaporator (34). The cold water tank 100A and the hot water tank 100B are connected to a communication pipe C which is opened and closed by a valve V13, -9 in fluid communication.

The remaining configuration is the same as that of the above-described embodiments.

17A, the valves V1, V2, V7, V8, V10, V12, and V13 are connected to the open valves V3 and V4 The hot water tank 100B and the cold water tank 100A are filled with the heating medium whose temperature rises while passing through the condenser 32 so that the cold water tank 100A and the hot water tank 100B ) All hot water is stored.

During the entire cooling, the valves V3, V4, V5, V6, V9, V11 and V13 are opened and the valves V1, V2, V7, V8, V10 and V12 are closed as shown in Fig. 100A) and the hot water tank (100B) store cold water.

(V5, V2, V3, V4, V7, V8, V9 and V12) are opened and valves V5 and V6 are opened when cooling and heating are common V6, V10, V11 and V13 are closed and the openings of the three-way valves CV-1 and CV-2 can be adjusted in accordance with the temperature of the cold water tank 100A. The evaporator 34 of the heat pump 30 is connected to the cold water tank 100A and the condenser 32 is connected to the hot water tank 100B until the temperature of the cold water tank 100A becomes lower than the proper temperature And the three-way valves CV-1 and CV-2 are operated to circulate the heat medium to the geothermal heat exchanger when the internal temperature of the cold water tank 100A falls below a proper temperature while allowing both cooling and heating.

This embodiment can be used in a state in which the heat pump is not operated as in the above-described embodiment, and the valves V1, V2, V3, V4 and V9 are opened and the remaining valves are closed, 10-3 are directly supplied to the cold water tank 100A. Of course, it is also possible to open and close the valve to directly enter the hot water tank 100B instead of the cold water tank 100A. The three-way valve (CV-1, CV-2) is automatically adjusted according to the load.

Although only one heat pump 30 is shown in Figs. 17A to 17C, it is also possible to connect a plurality of heat pumps 30 in parallel as shown in Fig. 17D.

On the other hand, the valve (cooling / heating changeover valve) used in the present invention is a butterfly valve which is normally operated at about 5 ° C on one side of the valve disk and is operated at about 50 ° C on the other side. A difference will be generated. Such a temperature difference may cause a problem of adiabatic effect in a large-capacity pipe of 200 A or more, and a thermal efficiency may be lowered due to heat transfer. Furthermore, if the valve is subjected to severe operational variations due to extreme temperature deviations, it can cause significant system operational failures. The evaporation shutoff valves PV1a.PV1b, PV2a and PV2b are provided on one or more sides of the valves V1 and V2 as shown in FIG. 18, and drain means (drain pipe, Drain valve) is installed to close the shutoff valve in the direction opposite to the load side, that is, on the side where the flow is not generated, and then the drain valve is opened to drain the heat medium inside the pipe to empty the inside of the pipe.

10: underground heat exchanger, 20: load side heat exchanger
30: heat pump, 31: compressor
32: condenser, 33: expansion valve
34: Evaporator,
40: control means, 41: load side supply pipe
42: load side return pipe, 43: geothermal supply pipe
44: Geothermal heat recovery pipe, 45 ~ 48: Connection pipe
V1 to V8: Valve,

Claims (22)

An underground heat exchanger (10) for recovering geothermal heat;
A load side heat exchanger (20) for performing cooling and heating;
And heat supply means for supplying the geothermal heat recovered directly or indirectly through the geothermal heat exchanger to the load side heat exchanger by heat exchange,
The heat supply unit includes a high pressure side heat exchanger for supplying high temperature heat, a low pressure side heat exchanger for supplying low temperature heat, a high pressure side heat exchanger for connecting the load side heat exchanger to the high pressure side heat exchanger or the low pressure side heat exchanger, Pressure side heat exchanger or the high-pressure side heat exchanger to control the heating and cooling by supplying the high-temperature side of the high-pressure side heat exchanger or the low-temperature side of the low-pressure side heat exchanger to the load side heat exchanger, as opposed to the load side heat exchanger ,
Pressure side heat exchanger and the load side heat exchanger to supply the heat of the high pressure side heat medium to the load side heat exchanger and to return the heat of the high pressure side heat medium to the high pressure side heat exchanger, Pressure side heat exchanger and the underground heat exchanger, both sides of which are connected to the load side channel connected to the load side heat exchanger and an underground channel connected to the underground heat exchanger, and the load side heat exchanger is connected to the under- And a valve means for opening and closing the load side conduit, the underground conduit and the conduit conduit by heating and cooling, The heat exchanger of the load side is supplied with at least one of the high temperature heat medium and the low temperature heat medium through the circulation of the heat medium without the four-
The load side conduit is a load side supply pipe (41) and a load side return pipe (42) which connect the high pressure side heat exchanger and the load side heat exchanger to supply the heat of the high pressure side heat medium to the load side heat exchanger and return to the high pressure side heat exchanger,
The underground side pipeline is a geothermal-side supply pipe (43) and a geothermal-side return pipe (44) for connecting the low-pressure side heat exchanger and the underground heat exchanger to supply geothermal heat to the low-pressure side heat exchanger and return to the underground heat exchanger.
The connecting pipe includes first and second connecting pipes (45, 46) connecting the geothermal heat return pipe and the load-side supply pipe at different positions, a third connecting pipe (45, 46) connecting the geothermal- , 4 connecting pipes (47, 48), valve means for selectively opening and closing the load side supply pipe, the load side return pipe, the geothermal side supply pipe, the geothermal side return pipe and the first to fourth connecting pipes based on the cooling / ,
The valve means includes a first valve (V1) installed between the points where the first and second connecting pipes (45, 46) are connected to the geothermal heat exchanger pipe to open and close the geothermal heat exchanger pipe, A second valve (V2) installed between the points where the four connection pipes are connected to the geothermal-side supply pipe to open and close the geothermal-side supply pipe, and a third valve A seventh valve (V7) installed between the first and sixth valves (V3, V4, V5, and V6), a point where the first and second connecting pipes are connected to the load side supply pipe to open and close the load side supply pipe, And an eighth valve (V8) installed between a point where the connection pipe is connected to the load side return pipe and opening and closing the load side return pipe. delete delete An underground heat exchanger (10) for recovering geothermal heat;
A load side heat exchanger (20) for performing cooling and heating;
And heat supply means for supplying the geothermal heat recovered directly or indirectly through the geothermal heat exchanger to the load side heat exchanger by heat exchange,
The heat supply unit includes a high pressure side heat exchanger for supplying high temperature heat, a low pressure side heat exchanger for supplying low temperature heat, a high pressure side heat exchanger for connecting the load side heat exchanger to the high pressure side heat exchanger or the low pressure side heat exchanger, Pressure side heat exchanger or the high-pressure side heat exchanger to control the heating and cooling by supplying the high-temperature side of the high-pressure side heat exchanger or the low-temperature side of the low-pressure side heat exchanger to the load side heat exchanger, as opposed to the load side heat exchanger ,
Pressure side heat exchanger and the load side heat exchanger to supply the heat of the high pressure side heat medium to the load side heat exchanger and to return the heat of the high pressure side heat medium to the high pressure side heat exchanger, Pressure side heat exchanger and the underground heat exchanger, both sides of which are connected to the load side channel connected to the load side heat exchanger and an underground channel connected to the underground heat exchanger, and the load side heat exchanger is connected to the under- And a valve means for opening and closing the load side conduit, the underground conduit and the conduit conduit by heating and cooling, The heat exchanger of the load side is supplied with at least one of the high temperature heat medium and the low temperature heat medium through the circulation of the heat medium without the four-
The load side conduit is a load side supply pipe (41) and a load side return pipe (42) which connect the high pressure side heat exchanger and the load side heat exchanger to supply the heat of the high pressure side heat medium to the load side heat exchanger and return to the high pressure side heat exchanger,
The underground side pipeline is a geothermal-side supply pipe (43) and a geothermal-side return pipe (44) for connecting the low-pressure side heat exchanger and the underground heat exchanger to supply geothermal heat to the low-pressure side heat exchanger and return to the underground heat exchanger.
The connection conduits are each in the form of a closed loop and are connected to the first circulation circulation pipe C-1 to which the geothermal-side supply pipe 43 and the load-side return pipe 42 are connected, the geothermal-side return pipe 44 and the load- (41) and the load side (C-2) in a state where the second circulation circulation pipe (C-2), the second circulation circulation pipe The first and second circulation pipes C-3 and C-4 for connecting the water return pipe 42 to the high-pressure side heat exchanger, the first and second circulation circulation pipes C- 5 and C-6 for connecting the geothermal-side supply pipe 43 and the geothermal-side return pipe 44 to the low-pressure side heat exchanger, respectively,
The valve means includes a first valve (V1) installed between a place where the geothermal-side supply pipe of the first circle circulation pipe (C-1) is connected and a place where the third circle connection pipe is connected, A second valve (V2) installed between a place where the geothermal heat return pipe of the circulation pipe (C-2) is connected and a place where the fourth circle connecting pipe is connected, a second valve And a third valve (V3) installed between the third circulation pipe and the third circulation pipe, wherein the fourth circle circulation pipe is connected to the third circulation pipe, A fifth valve (V5) installed between the connection point of the geothermal heat-return pipe of the second circle circulation pipe and the connection point of the second circle connection pipe, A first circulation pipe connected to the first circulation pipe and a second circulation pipe connected to the first circulation pipe, A sixth valve (V6), a seventh valve (V7) installed between a place where the load-side supply pipe of the second circle circulation pipe is connected and a place where the second circle connection pipe is connected, And an eighth valve (V8) installed between a place where the load side return pipe is connected and a place where the first circle connecting pipe is connected. The low-pressure side heat exchanger according to claim 4, wherein a plurality of the high-pressure side heat exchanger and the low-pressure side heat exchanger are connected to the first and second circulation circulation pipes, respectively, Pressure side heat exchanger, a first reverse return pipe (R-1) for converting the heat medium recovered in the first circulation circulation pipe and the high-pressure side heat exchanger in a reverse order to the order in which the heating medium is supplied to the low- Side heat exchanger and the low-pressure-side heat exchanger, and a second reverse return pipe (R-2) for converting the heat medium recovered in the side heat exchanger in a reverse order to the order in which the heat medium is supplied to the high- Wherein the heat medium is supplied and recycled. The method according to claim 1,
The control means includes a geothermal supply side main header (50-1) connected to the underground heat exchangers through the underground side pipeline to supply the geothermal heat to the high pressure side heat exchanger or the low pressure side heat exchanger, a plurality of underground heat exchangers A geothermal return side main header (50-2) connected to the ground side pipeline and distributing and returning geothermal heat recovered in the high pressure side heat exchanger or the low pressure side heat exchanger to the plurality of geothermal heat exchangers, a plurality of load side heat exchangers Side main heat exchanger (60-1) connected to the high-pressure side heat exchanger or the low-pressure side heat exchanger and distributing the heat-exchanged heat medium to the plurality of load side heat exchangers, and a plurality of load side heat exchangers Side heat exchanger and collecting the heat medium to be returned to the plurality of load side heat exchangers, Side heat exchanger, and a load-return-side main header (60-2) for returning the heat to the low-pressure side heat exchanger or the low-pressure side heat exchanger. [Claim 6] The system according to claim 6, further comprising: a low pressure supply side service header (70-1) connected to the plurality of low pressure side heat exchangers through the first piping (71) and selectively connected to the geothermal heat supply side main header or the load return side main header; Pressure return side service header 70-2, which is selectively connected to the geothermal heat recovery side main header or the load supply side main header, and the third piping 81, connected to the plurality of low pressure side heat exchangers through the second piping 72, Pressure side heat exchanger through the fourth piping 82 and a high pressure side service header 80-1 selectively connected to the geothermal heat recovery side main header or the load supply side main header while being connected to a plurality of high pressure side heat exchangers through a plurality of high pressure side heat exchangers And a high pressure return side service header (80-2) selectively connected to the geothermal supply side main header or the load return side main header while being connected to the geothermal heat source side main header or the load return side main header. Geothermal heat pump system by conversion. The high-pressure-side heat exchanger and the low-pressure-side heat exchanger according to claim 1, claim 4 or claim 6 or claim 7, wherein the high-pressure side heat exchanger and the low-pressure side heat exchanger include a condenser (31) for condensing the high- 32), and an evaporator (34) for evaporating the refrigerant passing through the condenser to a low temperature and a low pressure by an expansion valve (33) and supplying the evaporated refrigerant to the compressor. The high-pressure-side heat exchanger and the low-pressure-side heat exchanger according to claim 1, claim 4 or claim 6 or claim 7, wherein the high-pressure side heat exchanger and the low-pressure side heat exchanger include a condenser (31) for condensing the high- And a heat exchanger for exchanging heat with the evaporator (34) for evaporating the refrigerant having passed through the condenser to the low temperature and low pressure by the expansion valve (33) and supplying the refrigerant to the compressor. system. The heat exchanger according to any one of claims 1 to 7, further comprising a water storage heat exchanger interposed between the heat supply means and the load side heat exchanger to supply the heat medium having a high temperature or a low temperature collected by the heat supply means to the load side heat exchanger The geothermal heat pump system comprising: [12] The apparatus of claim 10, wherein the water storage heaters include an upper distributor and a lower distributor, which are disposed at different heights and connected to a supply side and a water return side of the load side heat exchanger, wherein the heat exchanger side is connected to the lower distributor And the supply side is connected to the upper distributor so that the heat is uniformly exchanged by the convection, or the heat medium is heat-exchanged. The geothermal heat pump system according to claim 10, further comprising a disturbance pump installed in the water storage tank for mixing the heat medium returned to the water storage tank with the stored heat medium. [10] The water treatment system according to claim 10, wherein the water storage tank is divided into a cold water tank connected to the low pressure side heat exchanger to store and supply low temperature water, and a hot water tank connected to the high pressure side heat exchanger to store and supply high temperature water. Geothermal heat pump system by conversion. [14] The refrigeration system of claim 13, wherein the cold water tank and the hot water tank are connected to the high-pressure side heat exchanger and the low-pressure side heat exchanger through the first and second switching tubes opened and closed by valves, respectively, Geothermal heat pump system by circulation water conversion. [14] The geothermal heat pump system according to claim 13, wherein the cold water tank and the hot water tank are connected to each other through a communicating pipe.
The engine-side heat exchanger according to claim 10, further comprising: an engine-side heat exchanger that recovers the heat of the drive engine for circulating the high-pressure side heat exchanger and the low-pressure side heat exchanger or the drive engine for cogeneration / heat generation and supplies the heat to the load side heat exchanger, 150). &Lt; / RTI &gt; The exhaust gas heat exchanger according to claim 16, further comprising an exhaust gas heat exchanger (160) for recovering the heat of the exhaust gas exhausted from the drive engine and supplying the heat to the load side heat exchanger directly or via a water storage heat exchanger Geothermal heat pump system. The engine-side heat exchanger according to claim 10, further comprising: an engine-side heat exchanger that recovers the heat of the drive engine for circulating the high-pressure side heat exchanger and the low-pressure side heat exchanger or the drive engine for cogeneration / heat generation and supplies the heat to the load side heat exchanger, 150); An exhaust gas heat exchanger connected in series with the engine-side heat exchanger, which recovers the heat of the exhaust gas exhausted from the driving engine by using the heat medium recovered from the heat of the driving engine and supplies the exhaust gas directly to the heat exchanger And a heat exchanger (160).
The exhaust gas recirculation system according to claim 18, further comprising: a circulation path of the arrangement recovered through the engine-side heat exchanger or the exhaust gas heat exchanger; and an arrangement number which is installed in the ground heat exchanger so as to be capable of heat transfer and supplies the arrangement to the geothermal heat recovered by the underground heat exchanger (EN) A geothermal heat pump system characterized by a circulation water conversion system characterized by a pipe (P1) and a diverter valve (CV5) provided at an inlet side joint of the arrangement recovery pipe. The geothermal heat pump system according to claim 10, wherein the geothermal heat pump system comprises at least one of a boiler for supplying heat to the water storage tank, and an absorption type water heater for being driven by gas. The high-pressure-side heat exchanger according to any one of claims 1, 4, 6, and 7, wherein the heat medium, which is provided at a branch point of the underground heat exchanger, Side heat exchanger or the low-pressure side heat exchanger, or a three-way valve for supplying the high-pressure side heat exchanger or the low-pressure side heat exchanger to the load side heat exchanger. [3] The apparatus of claim 1, further comprising: a recirculation shutoff valve installed at one or more sides of the first and second valves, respectively; and drain means provided between the recirculation shutoff valve and the first and second valves, And the drainage means is configured to drain the heating medium in the conduit in a state in which the accumulation and shutoff valve is closed.

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