KR20130031596A - System and method for cooling, heating and boiling using geothermal heat pump - Google Patents

Abstract

PURPOSE: A system and a method for cooling, heating and boiling using a geothermal heat pump are provided to perform cooling and heat storing when the temperature of storing water in a heat storing tub is below a predetermined temperature or to perform only the cooling when the heat storing is unnecessary. CONSTITUTION: A system and a method for cooling, heating and boiling using a geothermal heat pump are composed of a first circulating cycle and a second circulating cycle. The first circulating cycle circulates first circulating water which is applied with geothermal heat; is flowed in an evaporator; releases the heat of the first circulating water to refrigerant; and is flowed into a first heat exchanger(10). The second circulating cycle circulates second circulating water by equipping a first valve(210) for flowing the second circulating water which passed through a second heat exchanger(700) and a heat storing tub(900) into a condenser.

Description

Heating and cooling heat storage system using geothermal heat pump and cooling and heating method using the system {System and Method for cooling, heating and boiling using geothermal heat pump}

The present invention relates to a cooling and heating heat storage system using a geothermal heat pump and a cooling and heating and heat storage method using the system. More specifically, the heating and regenerative mode, the cooling mode or the cooling and the regenerative mode can be executed according to the user's request with one system, and the heating and cooling using a geothermal heat pump in which the heat storage action is automatically controlled according to the outlet temperature of the heat storage tank. A heat storage system and a cooling and heating method using the system.

The heat pump system basically connects the discharge port of the compressor, the condenser, the decompression means, the evaporator body, and the suction part of the compressor in order with conduits, and condenses the high-temperature and high-pressure refrigerant gas compressed by the compressor in the condenser to exchange the heat of condensation with the fluid. To generate hot water or to heat indoor air to perform heating and the like. The high and high pressure refrigerant liquid condensed in the condenser is expanded by a decompression means to form a low temperature and low pressure refrigerant liquid, and then flows into the evaporator body and evaporates by a heat source. It becomes a low temperature, low pressure refrigerant gas, the low temperature, low pressure refrigerant gas evaporated from the evaporator body is repeated on the basis of the cycle sucked into the compressor.

Therefore, the heat pump system is operated by the cooling operation to cool the room, or by operating the heating operation to heat the room. Basically, when the heat pump system is operated in a cooling operation, heat is emitted from the outside by the evaporator installed outside through the compressor, and the inside of the condenser installed in the room is absorbed through the decompression means to vaporize the room while cooling the room. do. In addition, when the heating operation is performed, the refrigerant evaporated in the evaporator installed outside is compressed through the compressor, and the compressed high temperature and high pressure refrigerant is condensed in the condenser installed in the room to discharge heat to the room to heat.

However, when the heat pump system is operated by heating, the hot water is generated by heating the heat storage tank or heating the room by the heat generated from the condenser. Therefore, there is a problem that it is difficult to simultaneously perform the function of the boiler and the heating and cooling functions. In addition, at least two heat pumps must be provided in order to simultaneously perform the cooling and heating functions and the heat storage function. However, in order to drive the two heat pumps, the connection pipe becomes complicated and the thermal efficiency is lowered.

Accordingly, there has been a demand for a cooling and heating heat storage system capable of more efficiently cooling and heating at the same time by a system having a single heat pump.

The present invention has been made to solve the above problems, according to one embodiment of the present invention, a system having one heat pump to perform the heating and heat storage function according to the user's request, or stored water stored in the heat storage tank Provides a cooling and heating heat storage system using a geothermal heat pump that can perform a heat storage function simultaneously with cooling when the temperature of the temperature is lower than a predetermined temperature, or a cooling operation only when the heat storage is not necessary, and a cooling and heating and heat storage method using the system. Done.

In addition, while enabling the heating and cooling function and the heat storage function at the same time, because only one heat pump is used, the thermal efficiency is increased, and the cooling and heating heat storage system using the economical geothermal heat pump and the cooling and heating and heat storage method using the system are provided. In addition, when performing cooling and heat storage functions, the heat storage function is performed by using the first circulating water present in the geothermal pump line. Therefore, the cooling and heat storage heat storage using the geothermal heat pump can simultaneously perform cooling and heat storage functions with only one heat pump. It provides a system and a method for heating and cooling heat storage using the system.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

The first object of the present invention, the evaporator for evaporating the refrigerant, the compressor for compressing the evaporated refrigerant to discharge the refrigerant of high temperature and high pressure, heating using a heat pump having a condenser and expansion valve in which the refrigerant discharged from the compressor flows in condensation And in the heat storage system, a first heat exchanger in which the first circulating water is introduced to receive geothermal heat and a first circulating water supplied to the geothermal heat are introduced into the evaporator to release heat of the first circulating water to the refrigerant, and then to the first heat exchanger. A first circulation cycle that is circulated; And a second heat exchange in which a second circulating water is introduced into the condenser to absorb heat from the refrigerant, and a first valve for introducing the heat-absorbed second circulating water into the heat storage tank and a second circulating water to heat the storage water stored in the heat storage tank. A second circulation cycle for circulating the second circulating water having a first valve for introducing the second circulating water passed through the gas and the heat storage tank to the condenser, the heating and heat storage system using a geothermal heat pump Can be.

The first circulation cycle may further include a third valve for introducing the first circulating water discharged from the evaporator to the first heat exchanger and a geothermal pump for providing power for circulating the first circulating water.

The heat storage tank includes an outlet for discharging the stored water stored in the heat storage tank and an inlet for inflowing the stored water discharged to the outside, and the third heat exchanger and the third circulation water for storing the stored water in the heat storage tank to heat the third circulation water. It may be characterized by heating the room by the third circulating water, including a load pump for circulating to the room.

The second object of the present invention is the heating and heat storage method using the heating and heat storage system described above, wherein the first circulating water is supplied with geothermal heat from the first heat exchanger, the first circulating water is introduced into the heat pump by the geothermal pump to cool the refrigerant. Evaporating, flowing into the first heat exchanger through an open third valve and circulating; The refrigerant of the heat pump flows into the condenser of the heat pump to heat the second circulating water, and flows into the second heat exchanger through the first valve which is circulated by the cold / hot pump and opened to heat the storage water stored in the heat storage tank. Flowing through the second valve to the condenser and circulating; Supplying hot water through a discharge port of the heat storage tank; And heating the room while the third circulating water is heated by the stored water flowing into the third heat exchanger, and the third circulating water is circulated by the load pump, using a heating and heat storage system using a geothermal heat pump. It can be achieved by heating and heat storage methods.

The third object of the present invention is to provide an evaporator for evaporating a refrigerant, a compressor for compressing the evaporated refrigerant to discharge a high temperature and high pressure refrigerant when the temperature of the stored water stored in the heat storage tank is below a specific temperature, and a refrigerant discharged from the compressor. In the cooling and heat storage system using a heat pump having a condenser and an expansion valve that is introduced and condensed, in a second heat exchanger and a second heat exchanger provided in a heat storage tank into which a first circulating water flowing into a condenser and absorbing heat from a refrigerant flows in A first circulation cycle including a fourth valve opening the first circulation water which has released heat to the storage water stored in the heat storage tank to be introduced back into the condenser; And a second coil absorbing external heat by the fan coil unit and the fan coil unit having a coil inlet part through which the second circulating water flowing into the evaporator and dissipating heat to the refrigerant is discharged and a coil discharge part through which the upper second circulating water is discharged. The cooling and heat storage system using a geothermal heat pump, characterized in that it comprises a second circulation cycle that is discharged from the coil discharge portion and flows back to the evaporator.

A geothermal pump providing power for circulating the first circulating water in the first circulating cycle; And it may be characterized in that it further comprises a cold pump for providing power for circulating the second circulating water in the second circulation cycle.

The heat storage tank may include a discharge port for discharging the stored water stored in the heat storage tank to the outside and an inlet for the storage water discharged to the outside.

The specific temperature may be characterized in that 40 ~ 60 ℃.

The fourth object of the present invention is a cooling and heat storage method using a geothermal heat pump using the above-mentioned cooling and heat storage system, wherein the first circulating water is introduced into the condenser of the heat pump to absorb the heat of the refrigerant by the operation of the geothermal heat pump. Discharged by; Heating the stored water stored in the heat storage tank by introducing the first circulating water discharged from the condenser into the second heat exchanger provided in the heat storage tank; Introducing the first circulating water discharged from the second heat exchanger back into the condenser through an open fourth valve; The second circulating water is introduced into the evaporator of the heat pump by the operation of the cold / hot pump to discharge and discharge heat to the refrigerant; A second circulating water discharged from the evaporator flows into the fan coil unit installed outside to absorb heat to the outside; And a second circulating water discharged from the fan coil unit may be introduced into the evaporator.

According to the needs of the user may further comprise the step of extracting the stored water stored in the heat storage tank through the discharge port of the heat storage tank.

The fifth object of the present invention is an evaporator for evaporating a refrigerant, a compressor for compressing the evaporated refrigerant to discharge a high-temperature and high-pressure refrigerant when the temperature of the stored water stored in the heat storage tank exceeds a specific temperature, the refrigerant discharged from the compressor is introduced In a cooling system using a heat pump having a condenser and an expansion valve condensed and condensed, the first heat exchanger is buried underground to absorb the heat from the first heat exchanger and the first heat exchanger to supply geothermal heat to the first circulation water. A first circulation cycle including a condenser configured to receive the first circulation water and supply heat from the refrigerant of the heat pump, and a third valve opened to introduce the first circulation water absorbing heat from the condenser into the first heat exchanger; And a second coil absorbing external heat by the fan coil unit and the fan coil unit having a coil inlet part through which the second circulating water flowing into the evaporator and dissipating heat to the refrigerant is discharged and a coil discharge part through which the upper second circulating water is discharged. Water discharged from the coil discharge portion may be achieved by a cooling system using a geothermal heat pump, characterized in that it comprises a second circulation cycle which is introduced to the evaporator and circulated again.

A geothermal pump providing power for circulating the first circulating water in the first circulating cycle; And it may be characterized in that it further comprises a cold pump for providing power for circulating the second circulating water in the second circulation cycle.

A sixth object of the present invention is to provide a cooling method using a geothermal heat pump using a cooling system as described above. By operating the geothermal pump, the first circulating water is introduced into the condenser of the heat pump to absorb heat from the refrigerant of the heat pump. And discharging; Introducing the first circulating water discharged from the condenser into the first heat exchanger embedded through the open third valve to discharge heat to the outside, and introducing the first circulating water discharged from the first heat exchanger into the condenser; The second circulating water is introduced into the evaporator of the heat pump by the operation of the cold / hot pump to discharge and discharge heat to the refrigerant; A second circulating water discharged from the evaporator flows into the fan coil unit installed outside to absorb heat to the outside; And a second circulating water discharged from the fan coil unit is introduced into the evaporator.

Therefore, according to an embodiment of the present invention as described, when the heating and heat storage function according to the user's request with a system having one heat pump, or the temperature of the storage water stored in the heat storage tank is below a predetermined specific temperature Simultaneously with cooling, the heat storage function is performed, or when no heat storage is required, only the cooling operation is performed.

In addition, while enabling the heating and cooling function and the heat storage function at the same time, because only one heat pump is used, the thermal efficiency is increased, and there is an advantage of being economic. In addition, when performing the cooling and heat storage function, since the heat storage function is performed using the first circulating water present in the geothermal pump line, the cooling and heat storage functions can be simultaneously performed with only one heat pump.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a block diagram of a cooling and heating heat storage system using a geothermal heat pump according to an embodiment of the present invention,
2 is a block diagram of a cooling and heating regenerative system using a geothermal heat pump for heating and regenerative action according to a first embodiment of the present invention;
3 is a flowchart of a heating and heat storage method using a cooling and heating heat storage system using a geothermal heat pump according to a first embodiment of the present invention;
4 is a configuration diagram of a cooling and heating regenerative system using a geothermal heat pump having cooling and regenerative actions according to a second embodiment of the present invention;
5 is a flow chart of a cooling and heat storage method using a cooling and heating heat storage system using a geothermal heat pump according to a second embodiment of the present invention;
6 is a configuration diagram of a cooling and heating heat storage system using a geothermal heat pump for cooling according to a third embodiment of the present invention;
7 is a flowchart illustrating a cooling method using a cooling and heating heat storage system using a geothermal heat pump according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected with another element in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

<Configuration of cooling and heating heat storage system using geothermal heat pump>

Hereinafter will be described the configuration and operation of the cooling and heating heat storage system using the geothermal heat pump 100 according to an embodiment of the present invention. First, Figure 1 shows a configuration of a cooling and heating heat storage system using a geothermal heat pump 100 according to an embodiment of the present invention. As shown in Figure 1, the air-conditioning system using the geothermal heat pump 100 according to an embodiment of the present invention is buried under the ground (1) to supply geothermal heat to the first circulating water (2) or the first circulation The water 2 comprises a first heat exchanger 10 which releases heat to the outside. In addition, the first pipe 20 is circulated in the first pipe 20 and the first pipe 20 is provided with a geothermal pump 300 for providing a circulating power to the first circulating water (2). . In addition, the second pipe 30 includes a third valve 230 for introducing the first circulating water 2 into the first heat exchanger 10.

In addition, it can be seen that the heat pump 100 circulates the refrigerant 5 that releases heat or absorbs heat into the first circulating water 2 introduced therein. The heat pump 100 includes an evaporator 110, a compressor 120, a condenser 130, and an expansion valve 140, like the conventional heat pump 100, and in some cases, a four-way valve and a controller, It may further include a temperature sensor, a manual valve.

As will be described in detail later, the heat pump 100 is the refrigerant 5 absorbs the heat of the first circulating water (2) when the system of the present invention is to operate the heating is transferred to the second circulating water (3) When the cooling operation is performed, the refrigerant 5 absorbs heat into the second circulating water 3 and discharges heat to the first circulating water 2. The operating principle of the heat pump 100 will be described later in detail in a specific embodiment.

In addition, the cooling and heating heat storage system according to an embodiment of the present invention includes a cold / hot pump 400 for circulating the second circulating water 3. In addition, the line through which the second circulation water 3 is circulated includes a third pipe 40, a fourth pipe 50, and a sixth pipe 70, and the fourth pipe 50 has a second circulation water ( 3) is provided with a first valve 210 configured to be introduced into the second heat exchanger 700 provided in the heat storage tank 900, the sixth pipe 70 is discharged from the second heat exchanger 700 It can be seen that the second valve 220 for introducing the second circulation water (3) to the heat pump (100).

In addition, a fifth pipe 60 is provided between the third pipe 40 and the first valve 210 to introduce the second circulating water 3 into the fan coil unit 600. The first pipe (2) flowing through the 30 to the second valve 220, the first pipe (20) for introducing the rear end side of the first valve 210 and the first pipe (20) Eight pipes 90 are provided to allow the second circulating water 3 to flow into the first pipe 20.

In addition, the storage water is stored in the heat storage tank 900, the storage water is supplied through the inlet 910, and the storage water heated through the discharge port 920 is supplied to the outside. In addition, as shown in Figure 1, the heat storage tank 900 includes a third heat exchanger 800, the third circulation that absorbs the heat of the storage water in the third heat exchanger 800 by the load pump 500 Water 4 is circulated to heat the room.

< First Embodiment >

Hereinafter, a cooling and heating heat storage system using the geothermal heat pump 100 according to the first embodiment of the present invention will be described. The first embodiment is to operate the heating and cooling heat storage system using the heat pump 100 mentioned above to perform the heating and heat storage action. First, Figure 2 shows the configuration of a cooling and heating heat storage system using a geothermal heat pump 100 for heating and heat storage action according to the first embodiment of the present invention. The thick line shown in FIG. 2 corresponds to the refrigerant 5 or the circulating water line operated. 3 is a flowchart illustrating a heating and heat storage method using a cooling and heating heat storage system using the geothermal heat pump 100 according to the first embodiment of the present invention.

When operated to perform the heating and regenerative action, as shown in FIG. 2, the first valve 210, the second valve 220, and the third valve 230 are opened, and the fourth valve 240 is closed. Will be. In addition, the geothermal pump 300 and the heat pump 100, the cold and hot pump 400 and the load pump 500 is operated.

A first circulation cycle according to the first embodiment will be described. The first circulation cycle corresponds to a line through which the first circulation water 2 is circulated. In the first circulation cycle according to the first embodiment, as shown in FIG. 2, the first circulation water 2 is circulated by the geothermal pump 300. Geothermal heat is supplied to the first circulating water 2 introduced into the first heat exchanger 10 buried underground. In addition, the first circulating water 2 absorbing the geothermal heat is introduced into the evaporator 110 of the heat pump 100 through the geothermal pump 300 of the first pipe 20 to exchange heat with the refrigerant 5. . That is, the refrigerant 5 introduced into the evaporator 110 is supplied with heat from the first circulating water 2 to be evaporated and introduced into the compressor 120, and the first circulating water 2 is heated to the refrigerant 5. After discharging the water, it is introduced again into the first heat exchanger 10 via the open third valve 230 provided in the second pipe 30 (S1).

In addition, the flow of the refrigerant 5 according to the first embodiment is the refrigerant 5 evaporated in the evaporator 110 flows into the compressor 120 to be a high-temperature, high-pressure gas refrigerant 5 is discharged, the discharged refrigerant ( 5) is introduced into the condenser 130. The refrigerant 5 introduced into the condenser 130 discharges heat to the second circulation water 3 of the second circulation cycle, which will be described later, to be condensed, and then flows back into the evaporator 110 through the expansion valve 140. do.

In the second circulation cycle according to the first embodiment, as shown in FIG. 2, the second circulation water 3 is circulated by the power of the cold / hot pump 400. The second circulating water 3 flows into the condenser 130 of the heat pump 100 to absorb heat from the refrigerant 5, and then passes through the cold / hot pump 400 of the third pipe 40. Then, the first valve 210 and the fourth tube 50 are introduced into the second heat exchanger 700 provided in the heat storage tank 900. In the second heat exchanger 700, the heat of the second circulating water 3 is released to the storage water stored in the heat storage tank 900, so that the storage water is heated (generated). The second circulating water 3 discharged from the heat storage tank 900 is introduced into the condenser 130 of the heat pump 100 through the sixth pipe 70 through the opened second valve 220. (S2).

In addition, the user can discharge the stored water through the discharge port of the heat storage tank 900 as needed (S3). The heat storage tank 900 further includes a third heat exchanger 800 to heat the third circulation water 4 flowing into the third heat exchanger 800 to heat the third circulation water 4. The indoor space may be circulated by the 500 and indoor heating may be performed (S4). In this case, the storage water heated in the heat storage tank 900 may be directly pumped into the room by the load pump 500 without installing the third heat exchanger 800 to heat the room.

< Second Embodiment >

Hereinafter, a cooling and heating heat storage system using the geothermal heat pump 100 according to the second embodiment of the present invention will be described. The second embodiment is to operate the cooling and heating heat storage system using the heat pump 100 mentioned above to perform the cooling and heat storage action. First, FIG. 4 is a block diagram of a cooling and heating heat storage system using a geothermal heat pump 100 for cooling and heat storage according to a second embodiment of the present invention. The thick line shown in FIG. 4 corresponds to the refrigerant 5 and the circulating water line operated. In addition, Figure 5 shows a flow chart of a cooling and heat storage method using a cooling and heating heat storage system using a geothermal heat pump 100 according to a second embodiment of the present invention.

In addition, the operation of the second embodiment is to perform cooling and heat storage at the same time to operate when the temperature (T ₁ ) of the stored water stored in the heat storage tank (900) falls below a predetermined specific temperature (T _c ). do. In one embodiment of the present invention, a specific temperature (T _c ) may be changed depending on the case, but is usually set within the range of 40 ~ 60 ℃.

First, in the cooling and heat storage method according to the second embodiment of the present invention, the first valve 210, the second valve 220, and the third valve 230 are closed in the aforementioned cooling and heating heat storage system, and the fourth valve ( Only 240 is open. In addition, the geothermal pump 300 and the cold / hot pump 400 are operated, but the load pump 500 is not operated. In addition, the heat pump 100 is operated to perform a cooling operation.

In the first circulation cycle according to the second embodiment of the present invention, the first circulation water 2 is introduced into the condenser 130 of the heat pump 100 by the operation of the geothermal pump 300 to heat the refrigerant 5. Absorbed and discharged (S10).

In addition, the first circulating water 2 discharged from the condenser 130 flows into the seventh pipe 80 and flows into the second heat exchanger 700 provided in the heat storage tank 900. Then, the first circulating water 2 introduced into the second heat exchanger 700 of the heat storage tank 900 discharges heat to the storage water of the heat storage tank 900 to heat the storage water stored in the heat storage tank 900 ( S20). At this time, the third valve 230 is closed so that the first circulating water 2 discharged from the condenser 130 does not flow into the second pipe 30, but flows along the seventh pipe 80. Since the valve 220 is closed, the valve 220 is sent to the second heat exchanger 700 side of the heat storage tank 900.

In addition, the first circulating water 2 discharged from the second heat exchanger 700 is introduced into the eighth pipe 90 through the fourth pipe 50, and then, again through the fourth valve 240 opened. Inflow to the 130 (S30). In this case, as shown in FIG. 4, since the first valve 210 is closed, the first circulating water 2 discharged from the second heat exchanger 700 is introduced into the eighth pipe 90. Therefore, the first circulating water 2 which receives heat from the heat pump 100 is circulated through the first circulation cycle, thereby heating (heating) the stored water stored in the heat storage tank 900.

In addition, in the refrigerant circulation line according to the second embodiment, the refrigerant 5 introduced into the condenser 130 is condensed by dissipating heat into the first circulation water 2, and passes through the expansion valve 140 to the evaporator 110. It is introduced into the second circulating water (3) to be described later to be evaporated, the evaporated refrigerant (5) is compressed through the compressor 120, is introduced into the condenser 130 again.

In the second circulation cycle according to the second embodiment, as shown in FIG. 4, the second circulation water 3 is circulated by the operation of the cold / hot pump 400, and the second circulation water 3 is heated. Into the evaporator 110 of the pump 100 is discharged by dissipating heat to the refrigerant (5) (S40).

The second circulating water 3 discharged from the evaporator 110 passes through the fan coil unit 600 through the coil inlet through the fifth pipe 60. The second circulation water 3 flows into the fan coil unit 600 installed outside to absorb heat to the outside (S50). That is, the cooling function is performed by the second circulation water (3). At this time, the second circulating water 3 discharged from the evaporator 110 does not flow into the fourth tube 50 because the first valve 210 is closed, and the fan coil unit is formed along the fifth tube 60. 600). In addition, the second circulating water 3 discharged from the fan coil unit 600 is introduced into the evaporator 110 again (S60).

< Third Embodiment >

Hereinafter, a cooling and heating heat storage system using the geothermal heat pump 100 according to the third embodiment of the present invention will be described. The third embodiment is to operate the cooling and heating heat storage system using the heat pump 100 mentioned above to perform the cooling action. First, FIG. 6 is a block diagram of a cooling and heating heat storage system using a geothermal heat pump 100 having a cooling action according to a third embodiment of the present invention. The thick line shown in FIG. 6 corresponds to the refrigerant 5 and the circulating water line operated. In addition, Figure 7 shows a flow chart of a cooling method using a cooling and heating heat storage system using a geothermal heat pump 100 according to a third embodiment of the present invention.

In addition, the operation of the third embodiment is to perform only the cooling function under the condition that no heat storage operation is required, so that the temperature T ₁ of the stored water stored in the heat storage tank 900 exceeds a predetermined specific temperature T _c . If it works. In one embodiment of the present invention, a specific temperature may be changed depending on the case, but is usually set within the range of 40 ~ 60 ℃.

First, in the cooling method according to the third embodiment of the present invention, the first valve 210, the second valve 220, and the fourth valve 240 are closed in the aforementioned cooling and heating heat storage system, and the third valve 230 is closed. Only is open. Then, the geothermal pump 300 and the cooling pump is operated but the load pump 500 is not operated. In addition, the heat pump 100 is operated to perform a cooling operation.

In the first circulation cycle according to the third embodiment, the circulation of the first circulation water 2 is caused by the operation of the geothermal pump 300. As shown in FIG. 6, the first circulating water 2 is introduced into the condenser 130 of the heat pump 100 to absorb and discharge heat from the refrigerant 5 of the heat pump 100 (S100). . Then, the first circulating water (2) is introduced into the first heat exchanger (10) buried through the second pipe (30) and the open third valve (230) to release heat to the outside. The first circulating water (2) supplied with geothermal heat is introduced into the condenser 130 again through the first pipe (20) and the geothermal pump (300) (S200). That is, the heat of the heat pump 100 is discharged to the outside by the first circulation cycle.

The circulation line of the refrigerant 5 according to the third embodiment of the present invention is basically the same as that of the second embodiment. That is, the refrigerant 5 circulation line according to the third embodiment condenses the refrigerant 5 introduced into the condenser 130 by dissipating heat into the first circulation water 2 and passes through the expansion valve 140. It is introduced into the 110 is supplied with heat to the second circulating water (3) to be described later to be evaporated, the evaporated refrigerant (5) is compressed through the compressor 120, it is introduced to the condenser 130 again. .

In addition, the second circulation cycle according to the third embodiment of the present invention is operated by the cold / hot pump 400, and the second circulating water 3 flows into the evaporator 110 of the heat pump 100 to cool the refrigerant 5. The heat is discharged to and discharged (S300). And,

The second circulating water 3 discharged from the evaporator 110 is introduced into the fifth pipe 60 through the cold / hot pump 400 and the third pipe 40. The second circulating water 3 introduced into the fifth pipe 60 is introduced into the fan coil unit 600 installed outside to absorb heat to the outside (S400). That is, the fan coil unit 600 performs the cooling function. At this time, since the first valve 210 is closed, the second circulating water 3 introduced into the third pipe 40 does not flow into the fourth pipe 50, but passes through the fifth pipe 60. It is configured to flow into the coil unit 600. Then, the second circulating water 3 absorbed and discharged heat from the fan coil unit 600 is introduced back into the evaporator 110 via the sixth pipe 70 (S500).

1: ground
2: first circulating water
3: second circulation water
4: third circulation water
5: refrigerant
10: first heat exchanger
20: Building 1
30: The second building
40: Building 3
50: Building 4
60: Building 5
70: Article 6
80: Building 7
90: Building 8
100: heat pump
110: Evaporator
120: compressor
130: condenser
140: expansion valve
210: first valve
220: second valve
230: third valve
240: fourth valve
300: geothermal pump
400: cold and hot pump
500: load pump
600: fan coil unit
700: second heat exchanger
800: third heat exchanger
900: heat storage tank
910: inlet
920: discharge outlet

Claims (13)

In a heating and heat storage system using a heat pump having an evaporator for evaporating a refrigerant, a compressor for compressing the evaporated refrigerant to discharge a high temperature and high pressure refrigerant, a condenser and an expansion valve in which the refrigerant discharged from the compressor flows in, condensation,
A first heat exchanger in which first circulating water is introduced to supply geothermal heat and a first circulating water supplied to the geothermal heat are introduced into the evaporator to release heat of the first circulating water to the refrigerant, and then to the first heat exchanger A first circulation cycle circulated; And
The second circulation water is introduced into the condenser to absorb heat from the refrigerant, and the first valve for introducing the heat-absorbed second circulation water into the heat storage tank and the second circulation water flows to heat the storage water stored in the heat storage tank. Using a geothermal heat pump comprising a second circulation cycle for circulating the second circulating water having a first valve for introducing a second heat exchanger and a second circulating water passing through the heat storage tank to the condenser. Heating and heat storage system.
The method of claim 1,
And a third valve for introducing the first circulation water discharged from the evaporator to the first heat exchanger in a first circulation cycle, and a geothermal pump for providing power for circulating the first circulation water. Heating and heat storage system using geothermal heat pump.
The method of claim 2,
The heat storage tank includes a discharge port for discharging the stored water stored in the heat storage tank to the outside, and an inlet for introducing the stored water discharged to the outside,
The storage water stored in the heat storage tank is introduced to heat the room by the third circulating water including a third heat exchanger for heating the third circulating water and a load pump for circulating the third circulating water into the room. Heating and heat storage system using geothermal heat pump.
In the heating and heat storage method using the heating and heat storage system of claim 3,
Receiving the first circulating water from the first heat exchanger and supplying the geothermal heat to the first circulating water to the heat pump by the geothermal pump to evaporate the refrigerant, and circulating the first circulating water through the open third valve to the first heat exchanger;
The refrigerant of the heat pump flows into the condenser of the heat pump to heat the second circulating water, and flows into the second heat exchanger through the first valve opened and circulated by the cold / hot pump to heat the storage water stored in the heat storage tank. Flowing into the condenser through an open second valve and circulating;
Supplying hot water through a discharge port of the heat storage tank; And
The third circulation water is heated by the stored water flowing into the third heat exchanger, and the third circulation water is circulated by the load pump, thereby heating the room. And heat storage method.
When the temperature of the storage water stored in the heat storage tank is below a specific temperature, the evaporator for evaporating the refrigerant, the compressor for compressing the evaporated refrigerant to discharge the refrigerant of high temperature and high pressure, the condenser in which the refrigerant discharged from the compressor is introduced and condensed; In a cooling and heat storage system using a heat pump having an expansion valve,
A second heat exchanger provided in the heat storage tank into which the first circulating water introduced into the condenser and absorbing heat from the refrigerant flows, and the first circulating water releasing heat to the storage water stored in the heat storage tank from the second heat exchanger to the condenser; A first circulation cycle comprising a fourth valve opening to be introduced again; And
A fan coil unit having a coil inlet part through which the second circulating water introduced into the evaporator and dissipating heat to the refrigerant and a coil discharge part through which the upper second circulating water is discharged and the fan coil unit absorbing external heat by the fan coil unit Cooling and heat storage system using a geothermal heat pump characterized in that it comprises a second circulation cycle that the second circulation water is discharged from the coil discharge portion and flows back to the evaporator.
6. The method of claim 5,
A geothermal pump providing power for circulating the first circulating water in the first circulating cycle; And
Cooling and heat storage system using a geothermal heat pump, characterized in that it further comprises a cold and hot pump for providing power for circulating the second circulating water in the second circulation cycle.
The method according to claim 6,
The heat storage tank is a cooling and heat storage system using a geothermal heat pump characterized in that it comprises a discharge port for discharging the stored water stored in the heat storage tank to the outside and an inlet for the storage water discharged to the outside.
8. The method of claim 7,
The specific temperature is 40 ~ 60 ℃ cooling and heat storage system using a geothermal heat pump, characterized in that.
In the cooling and heat storage method using a geothermal heat pump using the cooling and heat storage system of claim 7,
A first circulating water is introduced into the condenser of the heat pump by the operation of the geothermal pump to absorb and discharge the heat of the refrigerant;
Heating the stored water stored in the heat storage tank by introducing the first circulating water discharged from the condenser into a second heat exchanger provided in the heat storage tank;
Introducing the first circulating water discharged from the second heat exchanger back into the condenser through an open fourth valve;
A second circulating water is introduced into the evaporator of the heat pump by the operation of a cold and hot pump to discharge and discharge heat to the refrigerant;
The second circulating water discharged from the evaporator flows into a fan coil unit installed outside to absorb heat to the outside; And
Cooling and heat storage method using a geothermal heat pump comprising the step of introducing the second circulating water discharged from the fan coil unit to the evaporator.
The method of claim 9,
Cooling and heat storage method using a geothermal heat pump, characterized in that further comprising the step of outputting the stored water stored in the heat storage tank through the discharge port of the heat storage tank according to the user's needs.
When the temperature of the storage water stored in the heat storage tank exceeds a specific temperature, the evaporator for evaporating the refrigerant, the compressor for compressing the evaporated refrigerant to discharge the refrigerant of high temperature and high pressure, the condenser in which the refrigerant discharged from the compressor flows in and condensed; In a cooling system using a heat pump having an expansion valve,
A first heat exchanger buried underground and a first circulating water is introduced to supply geothermal heat to the first circulating water and the first circulating water absorbing heat from the first heat exchanger is supplied to supply heat from the refrigerant of the heat pump. A first circulation cycle comprising a condenser configured to receive and a third valve opened to flow into the first heat exchanger, the first circulation water absorbing heat from the condenser; And
A fan coil unit having a coil inlet part through which the second circulating water introduced into the evaporator and dissipating heat to the refrigerant and a coil discharge part through which the upper second circulating water is discharged and the fan coil unit absorbing external heat by the fan coil unit And a second circulation cycle in which a second circulation water is discharged from the coil discharge part and flows back into the evaporator and circulates.
12. The method of claim 11,
A geothermal pump providing power for circulating the first circulating water in the first circulating cycle; And
Cooling system using a geothermal heat pump, characterized in that further comprising a cold or hot pump for providing power for circulating the second circulating water in the second circulation cycle.
In the cooling method using a geothermal heat pump using the cooling system of claim 12,
By operating the geothermal pump, the first circulating water flows into the condenser of the heat pump to absorb and discharge heat from the refrigerant of the heat pump;
Introducing the first circulating water discharged from the condenser into the first heat exchanger buried through an open third valve to discharge heat to the outside, and introducing the first circulating water discharged from the first heat exchanger into the condenser; ;
A second circulating water is introduced into the evaporator of the heat pump by the operation of a cold and hot pump to discharge and discharge heat to the refrigerant;
The second circulating water discharged from the evaporator flows into a fan coil unit installed outside to absorb heat to the outside; And
And cooling the second circulating water discharged from the fan coil unit to the evaporator.

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