KR102133457B1 - Geothermal heating and cooling system of heat storaging tank variable operation type - Google Patents

Abstract

The present invention relates to a geothermal heating and cooling system capable of varying the operation of a heat storage tank. According to the present invention, the geothermal heating and cooling system capable of varying the operation of a heat storage tank comprises: a heat exchanger; a heat storage tank; an underground heat exchange unit; a geothermal heat pump; first and second supply headers; first and second heat storage tank fluid supply pipes; first and second heat storage tank fluid return pipes; first and second load side fluid supply pipes; first and second load side fluid return pipes; first to tenth opening and closing valves; and a control unit. According to the present invention, energy consumption can be reduced.

Description

Heat storage tank variable operation type geothermal heating and cooling system{GEOTHERMAL HEATING AND COOLING SYSTEM OF HEAT STORAGING TANK VARIABLE OPERATION TYPE}

The present invention relates to a geothermal cooling and heating system, and more particularly, to a heat storage tank variable operation type geothermal cooling and heating system that is easy to heat and cool during the season.

The geothermal cooling and heating device is used as a heat source for cooling and heating by installing a heat exchanger in the ground to recover heat from the ground having a temperature of 15°C to 18°C or to discharge heat to the ground. Therefore, in the case of cooling in summer, the temperature of the air heat source is more than 30℃, which consumes a lot of power due to heat dissipation through cooling, whereas the geothermal source maintains 15℃ to 18℃ to discharge heat smoothly. Efficiency. On the contrary, when heating in winter, the air heat source is cooled to a temperature of -20°C at the lowest, and a lot of power is consumed for heating, while the underground heat source can stably supply heating heat by maintaining the temperature at 15°C to 18°C. .

As an example of a geothermal cooling and heating device, there is a utility model registration No. 339349. This design is equipped with a cold and hot water storage tank, and the cold and hot water storage tank is installed between the heat pump for cooling and heating in the heat exchange circuit part and the cooling and heating space, and the cold and hot water storage tank stores the cold and hot water from the heating and cooling heat pump, and then the cooling and heating space. It acts as a medium to supply. The cold/hot water storage tank is configured to heat or cool the cold/hot water from the heat pump for heating and cooling with a predetermined cooling/heating heat using cheap late-night power.

When the heat storage tank is used for the geothermal heating and cooling device as in the above-mentioned design, energy can be efficiently used by using cheap late-night power during heating and cooling of the building, and it is easy to cope with sudden fluctuations in heating and cooling loads or device abnormalities. The day and night work is so large that heating and cooling are frequently switched.In this case, changing the operation method by changing the fluid filled with the heat storage tank, especially water from hot water to cold water or cold water to hot water, requires a lot of time and energy. have.

Therefore, the problem to be solved by the present invention is to provide a heat storage tank variable operation type geothermal heating and cooling system that enables instantaneous heating and cooling switching without driving the geothermal heat pump whenever the cooling operation and the heating operation are frequently switched between seasons. Is doing.

Heat storage tank variable operating geothermal heating and cooling system according to an embodiment of the present invention is a heat exchanger installed on one side of the ground; A first fluid storage unit, a second fluid storage unit provided independently of the first fluid storage unit, a storage unit connected between the first fluid storage unit and the second fluid storage unit to form a passage through which the fluid moves A heat storage tank including a connection pipe and a storage connection pipe opening/closing valve installed on the storage connection pipe to open and close a passage of the storage connection pipe; A heat exchange fluid pumping pipe installed inside the geothermal well, a submersible motor pump, an underground heat exchange fluid pumped from the submersible motor pump and supplying the introduced underground heat exchange fluid to the heat exchanger, and heat exchange with the load-side circulation fluid in the heat exchanger An underground heat exchange unit including a heat exchange fluid return pipe for returning the ground heat exchange fluid to the geothermal wells; A geothermal heat pump connected to the heat exchanger to introduce the load-side circulating fluid and supply the introduced load-side circulating fluid to the heat storage tank; A first supply header connected to the indoor ceiling heater; A second supply header connected to an indoor heating pipe; A first heat storage tank fluid supply pipe connected between the geothermal heat pump and the first fluid storage unit; A first heat storage tank fluid return pipe connected between the geothermal heat pump and the second fluid storage unit; A second heat storage tank fluid supply pipe branched from the first heat storage tank fluid supply pipe and connected to the second fluid storage unit; A second heat storage tank fluid return pipe branched from the first heat storage tank fluid return pipe and connected to the second fluid storage unit; A first load-side fluid supply pipe connected to the first supply header from the first fluid storage unit; A first load-side fluid return pipe connected to the first supply header from the first fluid storage unit; A second load-side fluid supply pipe which is connected to one side of the first load-side fluid supply pipe from the second fluid storage and communicates with the first load-side fluid supply pipe; A second load-side fluid return pipe connected to one side of the first load-side fluid return pipe from the second fluid storage part to communicate with the first load-side fluid return pipe; A first load side branch pipe branched from the first load side fluid supply pipe and connected to the second supply header; A second load side branch pipe branched from the first load side fluid return pipe and connected to the second supply header; A first opening/closing valve installed on the first heat storage tank fluid supply pipe to open and close a passage of the first heat storage tank fluid supply pipe; A second opening/closing valve installed on the first heat storage tank fluid return pipe to open and close a passage of the first heat storage tank fluid return pipe; A third opening/closing valve installed on the second heat storage tank fluid return pipe to open and close a passage of the second heat storage tank fluid return pipe; A fourth opening/closing valve installed on the second heat storage tank fluid supply pipe to open and close a passage of the second heat storage tank fluid supply pipe; A fifth opening/closing valve installed on the first load-side fluid supply pipe to open and close a passage of the first load-side fluid supply pipe; A sixth opening/closing valve installed on the first load-side fluid return pipe to open and close a passage of the first load-side fluid return pipe; A seventh opening/closing valve installed on the second load-side fluid supply pipe to open and close a passage of the second load-side fluid supply pipe; An eighth opening/closing valve installed on the second load-side fluid return pipe to open and close a passage of the second load-side fluid return pipe; A ninth open/close valve installed on the first load side branch pipe to open and close the passage of the first load side branch pipe; A tenth opening/closing valve installed on the second load side branch pipe to open and close the passage of the second load side branch pipe; And it characterized in that it comprises a control unit for controlling the opening and closing of the storage connecting pipe opening and closing valve and the first to tenth opening and closing valve.

In one embodiment, the heat exchange fluid guide chamber includes a cylindrical portion having an inner space, a pumping pipe through hole eccentrically located from the center of the cylinder, and a return pipe through hole adjacent to the pumping pipe through hole. The upper plate portion covering the upper end of the portion, the ground water pumping pipe connecting hole connected to the upper end of the ground water pumping pipe, and the ground water pumping pipe connecting hole disposed around the heat exchange fluid flowing into the heat exchange fluid guide chamber inside the ground water pumping pipe A chamber portion including a lower plate portion including a plurality of fluid drop holes to be dropped into the space and covering a lower end portion of the cylindrical portion; And an inlet part connected to the groundwater pumping pipe connection hole and communicating with the groundwater pumping pipe, a bent part in the direction of the pumping pipe through the inlet part, extending from an upper part of the bent part and connected to the pumping pipe through hole It may include a twist pipe including an outlet portion in communication with the heat exchange fluid pumping pipe.

Geothermal heat pump system for a golf course according to another embodiment of the present invention is an array structure in which the pumping through-holes of the top plate of the heat exchange fluid guide chamber communicate with each other and a plurality of small unit holes are arranged along the circumferential direction of the top plate And, the upper plate of the heat exchange fluid guide chamber further includes a circular slit formed inside the edge adjacent to the edge of the top plate, the heat exchange fluid guide chamber, the pipe coupling hole coupled to the upper portion of the twisted pipe, It includes a guide protrusion which is inserted into the circular slit on the lower surface and slides along the circular slit, and a pipe interference prevention hole provided in a form surrounding the heat exchange fluid return pipe in a state connected to the upper plate. Twist pipe position variable plate is placed; A handle coupling column connected to one side of the upper surface of the twisted pipe position variable plate and extending a predetermined length in the upper direction of the geothermal well; And a rotation operation handle inserted from the outside of the geothermal well into the inside of the geothermal well, and screwed to the upper end of the handle coupling column, and when the rotation operation handle is operated to the left and right, the twist pipe position The variable plate can be rotated so that the position where the twist pipe is coupled to the small unit holes can be varied.

According to the heat storage tank variable operation type geothermal cooling and heating system according to the present invention, the first storage unit and the second storage unit according to the operation selection on the indoor side without operating the geothermal heat pump when the cooling operation or the heating operation on the indoor side is selected in the intermittent season Cooling and heating of the room can be achieved immediately by supplying the high-temperature load-side circulation fluid and the low-temperature load-side circulation fluid to the indoor side. Therefore, when the geothermal heating and cooling system is operated in the interphase, it is possible to economically use the energy consumption cost to be reduced by lowering the power consumption due to the rapid heat exchange operation of the circulating fluid. This has the advantage of increasing.

1 is a view for explaining a variable storage type geothermal heating and cooling system according to an embodiment of the present invention.
FIG. 2 is an enlarged view of the underground heat exchange unit shown in FIG. 1.
3 is a plan view of the upper plate of the heat exchange fluid guide chamber shown in FIG.
FIG. 4 is a plan view of the lower plate of the heat exchange fluid guide chamber shown in FIG. 2.
5 is a cross-sectional view for explaining the configuration of a variable storage tank geothermal heating and cooling system according to another embodiment of the present invention.
FIG. 6 is a perspective view showing the upper plate and the twisted tube variable plate shown in FIG. 5.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the storage tank variable operating geothermal heating and cooling system according to an embodiment of the present invention. The present invention can be applied to various changes and may have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, and it should be understood that all modifications, equivalents, and substitutes included in the spirit and scope of the present invention are included. In describing each drawing, similar reference numerals are used for similar components. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than actual in order to clarify the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

Terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises" or "have" are intended to indicate the presence of features, numbers, steps, actions, elements, parts or combinations thereof described in the specification, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

1 is a view for explaining a variable storage type geothermal heating and cooling system according to an embodiment of the present invention.

Referring to Figure 1, the storage tank variable operating geothermal heating and cooling system according to an embodiment of the present invention, the heat exchanger 200, the heat storage tank 400, the underground heat exchange unit 100, the geothermal heat pump 300, the first supply Header 510, second supply header 520, first storage tank fluid supply pipe 610, first storage tank fluid return pipe 620, second storage tank fluid supply pipe 630, second storage tank fluid return pipe 640 , First load side fluid supply pipe 710, first load side fluid return pipe 720, second load side fluid supply pipe 730, second load side fluid return pipe 740, first load side branch pipe 810, second It includes a load side branch pipe (820), the first to tenth on-off valve (901 ~ 910).

The heat exchanger 200 is installed on one side of the ground so that heat exchange between the underground heat exchange fluid supplied by heat exchange from the geothermal well 10 and the load-side circulation fluid supplied from the geothermal heat pump 300 in the direction of the heat storage tank 400 is performed. do.

The heat storage tank 400 includes a first fluid storage section 410, a second fluid storage section 420, a storage section connection pipe 430, and a storage section connection pipe opening/closing valve 440.

The first fluid storage unit 410 and the second fluid storage unit 420 are provided independently of each other. The first fluid storage unit 410 and the second fluid storage unit 420 may be provided in the form of a drum having an internal space.

The storage connection pipe 430 is connected between the first fluid storage unit 410 and the second fluid storage unit 420 to form a passage through which the fluid moves.

The storage connection pipe opening/closing valve 440 is installed on the storage connection pipe 430 to open and close the passage of the storage connection pipe 430.

The underground heat exchange unit 100 is installed inside the geothermal well 10. For example, the underground heat exchange unit 100 includes an underground water pumping pipe 120, a heat exchange fluid guide chamber 130, an underwater motor pump 140, a heat exchange fluid pumping pipe 150, and a heat exchange fluid return pipe 160. Can.

The groundwater pumping pipe 120 is inserted into the geothermal well 10 formed in the underground, and the lower end of the pump housing 121 and the pump housing 121 having a diameter smaller than the diameter of the geothermal well 10 It includes a housing inlet and outlet nozzle portion 122 that is connected to the underground heat exchange fluid is introduced from the geothermal well hole (10) or the underground heat exchange fluid is discharged from the pump housing (121) to the geothermal well hole (10).

The heat exchange fluid guide chamber 130 is connected to the upper end of the ground water pumping pipe 120, and the underground heat exchange fluid flowing into the ground water pumping pipe 120 is discharged to the outside direction of the geothermal well hole 10 , Geothermal heat exchange fluid flowing from the outside of the geothermal well 10 into the ground water pumping pipe 120 is configured to be guided to the internal space of the ground water pumping pipe 120 and dropped.

The heat exchange fluid guide chamber 130 is adjacent to a cylindrical portion 1311 having an internal space, a pumping pipe through hole 1312a located eccentrically from the center of the cylindrical portion 1311 and the pumping pipe through hole 1312a Ground water pumping pipe connecting hole (1313a) including the return pipe through hole (1312b) and the upper portion (1312) covering the upper end of the cylindrical portion (1311), the upper end of the ground water pumping pipe (120) and the ground water pumping It is arranged around the pipe connection hole (1313a) and includes a plurality of fluid drop holes (1313b) to allow the heat exchange fluid flowing into the heat exchange fluid guide chamber (130) to fall into the inner space of the ground water pumping pipe (120). And the chamber portion 131 including a lower plate portion 1313 covering the lower end of the cylindrical portion (1311); And an inlet portion 1321 connected to the ground water pumping pipe connection hole 1313a to communicate with the ground water pumping pipe 120, and a bent portion bent from the inlet portion 1321 toward the pumping pipe through hole 1312a. 1322), a twist pipe 132 extending from an upper portion of the bent portion 1322 and including an outlet portion 1323 connected to the pumping pipe through hole 1312a and communicating with the heat exchange fluid pumping pipe 150 It can contain.

The submersible motor pump 140 is accommodated inside the groundwater pumping pipe 120 and connected to the lower portion of the heat exchange fluid guide chamber 130 to exchange the underground heat exchange fluid inside the geothermal well hole 10 to the heat exchange fluid guide chamber 130 Let it flow into the interior.

The heat exchange fluid pumping pipe 150 is connected to the upper end of the heat exchange fluid guide chamber 130, the upper end is connected to the heat exchanger 200, and the outside of the geothermal well hole 10 in the heat exchange fluid guide chamber 130 The underground heat exchange fluid guided in the direction is discharged to the outside direction of the geothermal well hole 10 to be supplied to the heat exchanger 200.

The heat exchange fluid return pipe 160 is connected to the upper end of the heat exchange fluid guide chamber 130, the upper end is connected to the heat exchanger 200, is arranged to be adjacent to the heat exchange fluid pumping pipe 150, the heat exchanger ( 200) so that the underground heat exchange fluid exchanged at 200 flows into the heat exchange fluid guide chamber 130.

The geothermal heat pump 300 is connected to the heat exchanger 200 so that the load-side circulating fluid flows in and supplies the introduced load-side circulating fluid to the heat storage tank 400.

The first supply header 510 is installed on the indoor side, and is connected to the ceiling heater 1100 on the indoor side. The ceiling heater 1100 is a device for heating and cooling.

The second supply header 520 is installed on the indoor side, and is connected to the heating pipe 1200 on the indoor side.

The first heat storage tank fluid supply pipe 610 is connected between the geothermal heat pump 300 and the first fluid storage unit 410 of the heat storage tank 400.

The first heat storage tank fluid return pipe 620 is connected between the geothermal heat pump 300 and the first fluid storage unit 410 of the heat storage tank 400.

The second heat storage tank fluid supply pipe 630 is branched from the first heat storage tank fluid supply pipe 610 and is connected to the second fluid storage unit 420 of the heat storage tank 400.

The second heat storage tank fluid return pipe 640 is branched from the first heat storage tank fluid return pipe 620 and is connected to the second fluid storage unit 420 of the heat storage tank 400.

The first load-side fluid supply pipe 710 is connected to the first supply header 510 from the first fluid storage unit 410 of the heat storage tank 400.

The first load-side fluid return pipe 720 is connected to the first supply header 510 from the first fluid storage unit 410 of the heat storage tank 400.

The second load-side fluid supply pipe 730 is connected to one side of the first load-side fluid supply pipe 710 from the second fluid storage unit 420 of the heat storage tank 400 and communicates with the first load-side fluid return pipe 720.

The second load-side fluid return pipe 740 is connected to one side of the first load-side fluid return pipe 720 from the second fluid storage 420 of the heat storage tank 400 and communicates with the first load-side fluid return pipe 720. .

The first load-side branch pipe 810 is branched from the first load-side fluid supply pipe 710 and is connected to the second supply header 520.

The second load side branch pipe 820 is branched from the first load side fluid return pipe 720 and connected to the second supply header 520.

The first opening/closing valve 901 is installed on the first heat storage tank fluid supply pipe 610 to open and close the passage of the first heat storage tank fluid supply pipe 610.

The second opening/closing valve 902 is installed on the first heat storage tank fluid return pipe 620 to open and close the passage of the first heat storage tank fluid return pipe 620.

The third open/close valve 903 is installed on the second heat storage tank fluid return pipe 640 to open and close the passage of the second heat storage tank fluid return pipe 640.

The fourth opening/closing valve 904 is installed on the second heat storage tank fluid supply pipe 630 to open and close the passage of the second heat storage tank fluid supply pipe 630.

The fifth opening/closing valve 905 is installed on the first load-side fluid supply pipe 710 to open and close the passage of the first load-side fluid supply pipe 710.

The sixth opening/closing valve 906 is installed on the first load-side fluid return pipe 720 to open and close the passage of the first load-side fluid return pipe 720.

The seventh open/close valve 907 is installed on the second load-side fluid supply pipe 730 to open and close the passage of the second load-side fluid supply pipe 730.

The eighth opening/closing valve 908 is installed on the second load-side fluid return pipe 740 to open and close the passage of the second load-side fluid return pipe 740.

The ninth opening/closing valve 909 is installed on the first load side branch pipe 810 to open and close the passage of the first load side branch pipe 810.

The tenth opening/closing valve 910 is installed on the second load side branch pipe 820 to open and close the passage of the second load side branch pipe 820.

The control unit (not shown) controls opening and closing of the first to tenth opening/closing valves 910. Although not shown, for example, the control unit may be disposed on one side of the geothermal heat pump.

Hereinafter, a process of variably operating a heat storage tank according to the season in a variable heat storage system of a variable heat storage tank according to an embodiment of the present invention will be described.

Winter heat pump operation

The storage unit connection pipe opening/closing valve 440 is opened by the control unit so that the first fluid storage unit 410 and the second fluid storage unit 420 of the heat storage tank 400 are in fluid communication with each other.

When the submersible motor pump 140, the heat exchanger 200, and the geothermal heat pump 300 are operated, the underground heat exchange fluid under the geothermal well 10, that is, ground water is pumped, and the first housing inlet and outlet of the ground water pumping pipe 120 It flows into the interior of the pump housing 121 through the nozzle unit 122, and the introduced underground heat exchange fluid is supplied to the interior of the heat exchange fluid guide chamber 130.

The underground heat exchange fluid supplied into the heat exchange fluid guide chamber 130 flows into the inlet part 1321 of the twist tube 132 accommodated in the cylindrical part 1311 of the chamber part 131 and follows the twist tube 132. By moving, it is supplied to the heat exchange fluid pumping pipe 150 through the outlet portion 1323 of the twist pipe 132.

Subsequently, the underground heat exchange fluid is supplied to the heat exchanger 200 along the heat exchange fluid pumping pipe 150 to exchange heat with the load-side circulating fluid by the heat exchanger 200, and then heat exchange fluid guide chamber through the heat exchange fluid return pipe 160 The underground heat exchange fluid introduced into the cylindrical portion 1311 of the 130 and introduced into the cylindrical portion 1311 of the heat exchange fluid guide chamber 130 is a plurality of lower plates 1313 of the heat exchange fluid guide chamber 130. It is dropped into the inner space of the groundwater pumping pipe 120 through the fluid drop hole of 1313b and is supplied to the inside of the geothermal well 10.

Subsequently, the load-side circulating fluid is supplied to the geothermal heat pump 300, and the geothermal heat pump 300 is heat-exchanged, that is, the high-temperature load-side circulating fluid is the first of the heat storage tank 400 through the first heat storage tank fluid supply pipe 610. It is supplied to the fluid storage unit 410, and is also supplied to the second fluid storage unit 420 of the heat storage tank 400 through the second heat storage tank fluid supply pipe 630. At this time, since the storage connection pipe opening/closing valve 440 is open, the first fluid storage unit 410 and the second fluid storage unit 420 share the load-side circulation fluid supplied.

The load-side circulating fluid supplied to the first fluid storage unit 410 and the second fluid storage unit 420 of the heat storage tank 400 is stored in the first fluid storage unit 410 and the second fluid storage unit 420 to store heat. do.

In this state, when a heating operation is selected from the indoor side through an air conditioning controller (not shown) installed on the indoor side, the controller opens the first to tenth open/close valves 910 and stores the first fluid in the heat storage tank 400. The load-side circulation fluid stored in the unit 410 and the second fluid storage unit 420 is supplied to the first supply header 510 through the first load-side fluid supply pipe 710 and the second load-side fluid supply pipe 730. At this time, since the ninth on-off valve 909 on the first load-side branch pipe 810 is also open, the load-side circulation fluid is also supplied to the second supply header 520.

By this process, the load side circulation fluid is supplied to the ceiling heater 1100 and the heating pipe 1200 connected to the first supply header 510 and the second supply header 520 so that the room can be heated.

Summer heat pump operation

The storage unit connection pipe opening/closing valve 440 is opened by the control unit so that the first fluid storage unit 410 and the second fluid storage unit 420 of the heat storage tank 400 are in fluid communication with each other, and the first to eighth opening and closing valves 908 is opened, and the ninth on-off valve 909 and the tenth on-off valve 910 are closed.

The submersible motor pump 140, the heat exchanger 200 and the geothermal heat pump 300 are operated so that the geothermal heat exchange fluid is supplied from the geothermal heat exchange unit 100 to the heat exchanger 200 and the geothermal heat exchange fluid from the heat exchanger 200. And the heat exchange process between the load-side circulating fluid. This process is the same as that of the operation of the heat pump during the winter, so detailed description is omitted.

Subsequently, the load-side circulating fluid is supplied to the geothermal heat pump 300, and the geothermal heat pump 300 is heat-exchanged, that is, the low-temperature load-side circulating fluid is the first of the heat storage tank 400 through the first heat storage tank fluid supply pipe 610. It is supplied to the fluid storage unit 410, and is also supplied to the second fluid storage unit 420 of the heat storage tank 400 through the second heat storage tank fluid supply pipe 630. At this time, since the storage connection pipe opening/closing valve 440 is open, the first fluid storage unit 410 and the second fluid storage unit 420 share the load-side circulation fluid supplied.

The load-side circulating fluid supplied to the first fluid storage unit 410 and the second fluid storage unit 420 of the heat storage tank 400 is stored in the first fluid storage unit 410 and the second fluid storage unit 420 to store heat. do.

In this state, when the cooling operation is selected from the indoor side through the air conditioning controller (not shown) installed on the indoor side, the first fluid storage unit 410 and the second fluid storage unit 420 of the heat storage tank 400 are thermally accumulated. The load-side circulation fluid is supplied to the first supply header 510 through the first load-side fluid supply pipe 710 and the second load-side fluid supply pipe 730. At this time, since the ninth on-off valve 909 on the first load-side branch pipe 810 and the tenth on-off valve 910 on the second load-side branch pipe 820 are closed, the second supply header 520 uses a load-side circulation fluid. Is not supplied. Therefore, the load-side circulation fluid is supplied only to the first supply header 510, so that only the ceiling heater 1100 connected to the first supply header 510 is used for indoor cooling.

Operation of heat pump in inter-season

During the inter-season, the heating operation and the cooling operation are frequently alternately performed according to the heating selection and the cooling selection of the indoor occupants due to the day and night crossing.

<Residential circulating fluid heat storage>

During the interstitial season, underground heat is used to store the low-temperature load-side circulating fluid required for cooling in the second fluid storage unit 420 of the heat storage tank 400 to store heat, and during the daytime, high-temperature load required for heating using underground heat. The circulating fluid may be stored in the first fluid storage unit 410 of the heat storage tank 400 to accumulate heat.

When the low-temperature load-side circulation fluid is stored, the first opening/closing valve 901 and the second opening/closing valve 902 are closed by the control unit, and the third opening/closing valve 903 and the fourth opening/closing valve 904 are opened, The second heat storage tank fluid supply pipe 630 and the second heat storage tank fluid return pipe are loaded side circulation fluid that is exchanged with the underground heat circulation fluid supplied from the underground heat exchange unit 100 and supplied to the geothermal heat pump 300 from the heat exchanger 200. Heat exchange while circulating the second fluid storage unit 420 of the geothermal heat pump 300 and the heat storage tank 400 through 640 to store and store the load-side circulation fluid for cooling in the second fluid storage unit 420 for heat storage. Can.

In the case of accumulating high-temperature load-side circulating fluid, the third opening/closing valve 903 and the fourth opening/closing valve 904 are opened by the control unit to exchange heat with the underground heat circulating fluid supplied from the underground heat exchange unit 100 to exchange heat. The load-side circulation fluid supplied from the (200) to the geothermal heat pump (300) is the first heat storage tank fluid supply pipe (610) and the first heat storage tank fluid return pipe (620) of the geothermal heat pump (300) and heat storage tank (400). 1 The heat exchange while circulating the fluid storage unit 410 may be stored in the first fluid storage unit 410 to store the load-side circulating fluid for heat storage.

Under the process of accumulating the load-side circulating fluid, the underwater motor pump 140, the heat exchanger 200, and the geothermal heat pump 300 are operated, so that the geothermal heat exchange fluid is supplied to the heat exchanger 200 and exchanged heat. The heat exchange process between the underground heat exchange fluid and the load-side circulating fluid is performed in the group 200. This process is the same as that of the operation of the heat pump during the winter, so detailed description is omitted.

In this way, the first fluid storage unit 410 of the heat storage tank 400 is stored with a high temperature load-side circulating fluid for heating, and the second fluid storage unit 420 is low-temperature load-side circulating fluid for cooling. When a heating operation is selected from the indoor side through an air conditioning controller (not shown) installed on the indoor side, the control unit closes the seventh open/close valve 907 and the eighth open/close valve 908, and the fifth open/close valve 905 ), the sixth open/close valve 906, the ninth open/close valve 909 and the tenth open/close valve 910 are opened, and the high-temperature load-side circulation fluid stored in the first fluid storage unit 410 is the first load-side fluid. The ceiling heater 1100 connected to the first supply header 510 by being supplied to the second supply header 520 through the first supply header 510 and the first load side branch pipe 810 through the supply pipe 710 and It is supplied to the heating pipe 1200 connected to the second supply header 520, and accordingly, the room may be heated.

The high-temperature load-side circulating fluid is supplied to the ceiling heater 1100 and the heating pipe 1200 so that heating is performed, and the load-side circulating fluid is again passed through the second load side branch pipe 820 and the first load side fluid return pipe 720. It is returned to the first fluid storage unit 410 of the heat storage tank 400.

The temperature of the load-side circulating fluid that is returned decreases, and accordingly, the temperature of the load-side circulating fluid stored in the first fluid storage unit 410 gradually decreases. In this case, the underground heat exchange unit 100 and the geothermal heat pump 300 are operated. The heat exchange process between the ground heat circulation fluid and the load-side circulation fluid is performed. At this time, the control unit closes the third open/close valve 903 and the fourth open/close valve 904 and opens the first open/close valve 901 and the second open/close valve 902 to open the first heat storage tank fluid supply pipe 610 and the first 1 The load-side circulating fluid is circulated between the geothermal heat pump 300 and the first fluid storage unit 410 of the heat storage tank 400 through the heat storage tank fluid return pipe 620.

On the other hand, when the cooling operation is selected from the indoor side through the air conditioning controller installed on the indoor side, the control unit is the fifth on-off valve 905, the sixth on-off valve 906, the ninth on-off valve 909 and the tenth on-off valve 910 is closed, the seventh on-off valve 907 and the eighth on-off valve 908 is opened, the low-temperature load-side circulation fluid stored in the second fluid storage unit 420 is a second load-side fluid supply pipe (730) ) Is supplied to the first supply header 510 to be supplied to the ceiling heater 1100 connected to the first supply header 510, and accordingly, the room may be cooled through the ceiling heater 1100.

As the cold load-side circulating fluid is supplied to the ceiling heater 1100 and cooling is performed, the load-side circulating fluid is returned to the second fluid storage unit 420 of the heat storage tank 400 through the second load-side fluid return pipe 740.

The temperature of the load-side circulating fluid that is returned increases, and accordingly, the temperature of the load-side circulating fluid that is stored in the second fluid storage unit 420 gradually increases, and in this case, the underground heat exchange unit 100 and the geothermal heat pump 300 are operated. The heat exchange process between the ground heat circulation fluid and the load-side circulation fluid is performed. In this case, the control unit closes the first on-off valve 901 and the second on-off valve 902 and opens the third on-off valve 903 and the fourth on-off valve 904 to open the second heat storage tank fluid supply pipe 630 and the second 2 The load-side circulating fluid is circulated between the geothermal heat pump 300 and the second fluid storage unit 420 of the heat storage tank 400 through the heat storage tank fluid return pipe 640.

In the heat storage tank variable operating type geothermal heating and cooling system according to an embodiment of the present invention, the heat storage tank 400 includes a first fluid storage unit 410 and a second fluid storage unit 420, so that the first fluid storage unit 410 The load-side circulating fluid at a high temperature is stored and stored, and the second fluid storage unit 420 is stored at a low-temperature load-side circulating fluid, so that the fluid for cooling and the fluid for heating are thermally stored independently. When the heating operation is selected, the high temperature load-side circulating fluid stored in each of the first fluid storage unit 410 and the second fluid storage unit 420 according to the operation selection on the indoor side without operating the geothermal heat pump 300 and The low-temperature load-side circulating fluid is immediately supplied to the indoor side so that the cooling and heating of the room can be achieved immediately.

Therefore, when operating the geothermal heating and cooling system in the interstitial period, it is possible to economically use the energy consumption cost to be reduced by lowering the power consumption due to the rapid heat exchange operation of the circulating fluid. This has the advantage of increasing.

Hereinafter, a heat storage tank variable operation type geothermal heating and cooling system according to another embodiment of the present invention will be described with reference to FIGS. 5 and 6, focusing on differences from a heat storage tank variable operation type geothermal cooling system according to an embodiment of the present invention. 5 is a cross-sectional view for explaining the configuration of a variable heat storage tank operating geothermal heating and cooling system according to another embodiment of the present invention, and FIG. 6 is a perspective view showing the upper plate and the twisted tube variable plate shown in FIG. 5.

5 and 6, the storage tank variable operating geothermal heating and cooling system according to another embodiment of the present invention, the pumping through hole 1312a of the upper plate portion 1312 of the heat exchange fluid guide chamber 130 communicates with each other An array structure in which a plurality of small unit holes 1312a-1 are arranged along the circumferential direction of the top plate portion 1312, and the top plate portion 1312 of the heat exchange fluid guide chamber 130 is inside the edge adjacent to the edge of the top plate portion 1312. It further includes a circular slit (1312c) formed in, the heat exchange fluid guide chamber 130, the pipe coupling hole 181 coupled to the upper portion of the twisted pipe 132, the lower surface is inserted into the circular slit (1312c) circular It includes a guide protrusion 182 that slides along the slit 1312c, and a pipe interference preventing hole 183 provided in a form surrounding the heat exchange fluid return pipe 160 in a state connected to the top plate portion 1312, and the top plate portion 1312 ) Twist pipe position variable plate 180 disposed above; The twist pipe position variable plate 180 is connected to one side of the upper surface, and the geothermal well hole 10 extends a certain length in the upper direction of the handle coupling column 191; and the geothermal well hole 10 from the outside of the geothermal well hole 10 ) Is the same as the storage tank variable operating geothermal heating and cooling system according to an embodiment of the present invention, except that it further includes a rotary operation handle 192 that is inserted into the inside and screwed to the upper end of the handle coupling pillar 191. .

The rotary operation handle 192 may be stored separately from the handle coupling column 191 after the position of the upper end of the twist pipe 132 is varied.

The heat storage tank variable operation type geothermal heating and cooling system according to another embodiment of the present invention can vary the position of the upper end of the twist pipe (132). That is, when the rotary operation handle 192 is operated to the left and right from the ground, the twist pipe position variable plate 180 rotates so that the twist pipe 132 is coupled to the small unit holes 1312a-1. Is variable. Accordingly, when the heat exchange fluid pumping pipe 150 is connected to the heat exchanger 200, the position of the upper end of the twist pipe 132 is varied according to the position of the heat exchanger 200, thereby making the twist pipe closer to the heat exchanger 200. The position of the upper end of the 132 can be adjusted, so that the distance between the heat exchange fluid pumping pipe 150 and the heat exchanger 200 can be further narrowed, so that the heat exchange fluid pumping pipe 150 is exchanged with the heat exchanger 200. There is an advantage that the connection process can be facilitated.

The storage tank variable operation type geothermal cooling and heating system according to the present invention is a type of open geothermal system in which a groundwater circulation line connecting between a geothermal hole and a heat exchanger is discharged from the upper portion of the geothermal hole to the ground, and a plurality of ground vertically perpendicular to the ground. It can be applied to all types of closed geothermal systems in the form of forming pores and embedding a heat recovery tube in the geothermal cavity.

On the other hand, the first load-side fluid supply pipe 710, the first load-side fluid return pipe 720, the second load-side fluid supply pipe 730, the second load-side fluid of the variable storage type geothermal heating system according to an embodiment of the present invention An anti-fouling coating layer made of an anti-fouling coating composition may be applied to the inner and outer surfaces of the return pipe 740 to effectively prevent adhesion and removal of contaminants.

The anti-pollution coating composition contains mercaptobenzoxazole and amidoalkyl betaine in a molar ratio of 1:0.01 to 1:2, and the total content of mercaptobenzoxazole and amidoalkyl betaine is 1 for the total aqueous solution. ~10% by weight.

The mercaptobenzoxazole and amidoalkyl betaine have a molar ratio of 1:0.01 to 1:2, and when the molar ratio is out of the above range, the coating property of the substrate decreases or the water adsorption on the surface increases after application. There is a problem that the film is removed.

The mercaptobenzoxazole and amidoalkyl betaine are preferably 1 to 10% by weight in the total composition aqueous solution, and if it is less than 1% by weight, there is a problem that the coatability of the substrate decreases. Crystal precipitation is likely to occur due to the increase of.

On the other hand, it is preferable to apply the composition for prevention of contamination onto the substrate by a spray method. In addition, the final coating film thickness on the substrate is preferably 550 ~ 2000 ~, more preferably 1100 ~ 1900Å. If the thickness of the coating film is less than 550 이, there is a problem that deterioration occurs in the case of high temperature heat treatment, and if it exceeds 2000 Å, there is a disadvantage that crystal precipitation on the coated surface is likely to occur.

In addition, the present composition for preventing contamination can be prepared by adding 0.1 mol of mercaptobenzosiazole and 0.05 mol of amidoalkyl betaine to 1000 ml of distilled water and then stirring.

Meanwhile, a temperature discoloration layer may be applied to the outer surfaces of the main body of the heat exchanger 200 and the geothermal heat pump 300 of the variable storage type geothermal heating and heating system according to an embodiment of the present invention.

The temperature discoloration layer can be applied to two or more temperature discoloration substances that change color when the temperature reaches a predetermined temperature or more, and is separated into two or more sections according to the temperature change to determine the stepwise temperature change. A protective film layer may be applied on the layer to prevent the temperature discoloration layer from being damaged.

Here, the temperature discoloration layer may be formed by applying a temperature discoloration material having a discoloration temperature of 40°C or higher and 60°C or higher, respectively. The temperature discoloration layer changes color according to the temperature of the body that is indirectly heated as the temperature of the heat exchanger 200 and the geothermal heat pump 300 rises, thereby changing the temperature of the heat exchanger 200 and the geothermal heat pump 300. It is to detect. The heat exchanger 200, the temperature at the time of heat exchange of the geothermal heat pump 300 is transmitted to the surface of the body, and the temperature discoloration layer reacts according to the temperature change of the body, resulting in the heat exchanger 200 and the geothermal heat pump 300 ).

The temperature discoloration layer may be formed by applying a temperature discoloration material that changes color when it reaches a predetermined temperature or more to the surface of the metal mesh foam. In addition, the temperature discoloration layer is generally composed of a microcapsule structure of 1 to 10㎛, and can exhibit colored and transparent colors due to the binding and separation phenomenon depending on the temperature of the electron donor and the electron acceptor in the microcapsule.

In addition, the temperature discoloration layer has a fast color change, and may have various discoloration temperatures such as 40°C, 60°C, 70°C, 80°C, and the like, and such discoloration temperature can be easily adjusted in various ways. The temperature discoloration layer may use various kinds of temperature discoloration materials based on the principle of molecular rearrangement of organic compounds and spatial rearrangement of atomic groups.

To this end, the temperature discoloration layer is preferably formed to be separated into two or more sections according to temperature changes by applying two or more temperature discoloration materials having different discoloration temperatures. The temperature discoloration layer is preferably a temperature discoloration material having a relatively low temperature discoloration temperature and a temperature discoloration material having a relatively high temperature discoloration temperature, more preferably having a discoloration temperature of 40°C or higher and 60°C or higher. A temperature discoloration layer may be formed using a temperature discoloration material.

Through this, it is possible to check the temperature changes of the heat exchanger 200 and the geothermal heat pump 300 so that the temperature changes of the heat exchanger 200 and the geothermal heat pump 300 can be detected, and accordingly the current heat exchanger 200 ), geothermal heat pump 300 is an advantage that can be easily checked with the naked eye whether the state is in normal operation, or overheated state.

In addition, the protective film layer is applied on the temperature discoloration layer to prevent the temperature discoloration layer from being damaged due to external impact, and it is easy to check whether the temperature discoloration layer is discolored, and at the same time, consider that the temperature discoloration material is weak to heat, and insulate the insulation effect. It is preferable to use a branched transparent coating material.

On the other hand, the surface of the first supply header 510 and the second supply header 520 of the variable storage type geothermal heating and heating system according to an embodiment of the present invention is coated with a corrosion prevention layer to prevent corrosion of the metal surface Can.

The coating material of the anti-corrosion layer is 15% by weight of benztriazole, 25% by weight of ethylene glycol butyl ether, 20% by weight of hafnium, 10% by weight of molybdenum emulsion (MoS2), 15% by weight of titanium oxide (TiO2), phenol noblock type glycidyl It is composed of 15% by weight of ether, and the coating thickness may be 8 µm.

Benztriazole, ethylene glycol butyl ether, and phenol noblock type glycidyl ether serve to prevent corrosion and discoloration.

Hafnium is a transition metal element with corrosion resistance, and serves to have excellent water resistance and corrosion resistance.

Molybdenum emulsifier plays a role in imparting slidability and lubricity to the surface of the coating film.

Titanium oxide is added for the purpose of fire resistance and chemical stability.

The reason for the numerical limitation of the ratio of the components and the coating thickness as described above, as a result of analyzing the results through the test results while the inventor repeatedly failed several times, exhibited the optimum corrosion prevention effect at the ratio.

The description of the presented embodiments is provided to enable any person of ordinary skill in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art of the present invention, and the general principles defined herein can be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention should not be limited to the embodiments presented herein, but should be interpreted in the broadest scope consistent with the principles and novel features presented herein.

100: underground heat exchange unit 200: heat exchanger
300: geothermal heat pump 400: heat storage tank
510: first supply header 520: second supply header
610: 1st storage tank fluid supply pipe 620: 1st storage tank fluid return pipe
630: 2nd heat storage tank fluid supply pipe 640: 2nd heat storage tank fluid return pipe
710: first load side fluid supply pipe 720: first load side fluid return pipe
730: second load side fluid supply pipe 740: second load side fluid return pipe
810: first load side branch 820: second load side branch
901: first on-off valve 902: second on-off valve
903: 3rd open/close valve 904: 4th open/close valve
905: fifth on-off valve 906: sixth on-off valve
907: 7th open/close valve 908: 8th open/close valve
909: 9th open/close valve 910: 10th open/close valve

Claims (3)

A heat exchanger 200 installed on one side of the ground;
A first fluid storage unit 410, a second fluid storage unit 420 provided independently of the first fluid storage unit 410, the first fluid storage unit 410 and the second fluid storage unit 420 ) Is connected to the storage unit connecting pipe 430 to form a passage through which the fluid moves, the storage unit connecting pipe installed on the storage connecting pipe 430 to open and close the passage of the storage connecting pipe 430 A heat storage tank 400 including an opening/closing valve 440;
A heat exchanger installed inside the geothermal well 10, the underground heat exchange fluid pumped from the submersible motor pump 140 and the submersible motor pump 140 flows into the heat exchanger 200 to supply the introduced underground heat exchange fluid to the heat exchanger 200 Underground heat exchange unit (100) comprising a fluid pumping pipe (150) and a heat exchange fluid return pipe (160) for returning an underground heat exchange fluid to the geothermal well (10) after being exchanged with a load-side circulation fluid in the heat exchanger (200) );
A geothermal heat pump 300 connected to the heat exchanger 200 to introduce the load-side circulating fluid and supply the introduced load-side circulating fluid to the heat storage tank 400;
A first supply header 510 connected to the indoor ceiling heater 1100;
A second supply header 520 connected to the indoor heating pipe 1200;
A first heat storage tank fluid supply pipe 610 connected between the geothermal heat pump 300 and the first fluid storage unit 410;
A first heat storage tank fluid return pipe 620 connected between the geothermal heat pump 300 and the second fluid storage unit 420;
A second heat storage tank fluid supply pipe 630 branched from the first heat storage tank fluid supply pipe 610 and connected to the second fluid storage unit 420;
A second heat storage tank fluid return pipe 640 branched from the first heat storage tank fluid return pipe 620 and connected to the second fluid storage unit 420;
A first load-side fluid supply pipe 710 connected to the first supply header 510 from the first fluid storage unit 410;
A first load-side fluid return pipe 720 connected to the first supply header 510 from the first fluid storage unit 410;
A second load-side fluid supply pipe 730 connected to one side of the first load-side fluid supply pipe 710 from the second fluid storage unit 420 and communicating with the first load-side fluid supply pipe 710;
A second load-side fluid return pipe 740 connected to one side of the first load-side fluid return pipe 720 from the second fluid storage unit 420 and communicating with the first load-side fluid return pipe 720;
A first load side branch pipe 810 branched from the first load side fluid supply pipe 710 and connected to the second supply header 520;
A second load side branch pipe 820 branched from the first load side fluid return pipe 720 and connected to the second supply header 520;
A first opening/closing valve 901 installed on the first heat storage tank fluid supply pipe 610 to open and close a passage of the first heat storage tank fluid supply pipe 610;
A second on/off valve 902 installed on the first heat storage tank fluid return pipe 620 to open and close a passage of the first heat storage tank fluid return pipe 620;
A third opening/closing valve 903 installed on the second heat storage tank fluid return pipe 640 to open and close a passage of the second heat storage tank fluid return pipe 640;
A fourth opening/closing valve 904 installed on the second heat storage tank fluid supply pipe 630 to open and close the passage of the second heat storage tank fluid supply pipe 630;
A fifth opening/closing valve 905 installed on the first load-side fluid supply pipe 710 to open and close the passage of the first load-side fluid supply pipe 710;
A sixth opening/closing valve 906 installed on the first load-side fluid return pipe 720 to open and close a passage of the first load-side fluid return pipe 720;
A seventh open/close valve 907 installed on the second load-side fluid supply pipe 730 to open and close the passage of the second load-side fluid supply pipe 730;
An eighth opening/closing valve 908 installed on the second load-side fluid return pipe 740 to open and close a passage of the second load-side fluid return pipe 740;
A ninth opening/closing valve 909 installed on the first load side branch pipe 810 to open and close a passage of the first load side branch pipe 810;
A tenth opening/closing valve 910 installed on the second load side branch pipe 820 to open and close a passage of the second load side branch pipe 820; And
Characterized in that it comprises a control unit for controlling the opening and closing of the storage connection pipe opening and closing valve 440 and the first to tenth opening and closing valve 910,
Storage tank variable operation type geothermal heating and cooling system. According to claim 1,
The ground water pump pipe 120 is inserted into the geothermal well 10, and the heat exchange fluid guide chamber 130 is connected to the upper end of the ground water pump pipe 120;
The heat exchange fluid guide chamber 130,
A cylindrical portion 1311 having an internal space, a pumping pipe through hole 1312a located eccentrically from the center of the cylindrical portion 1311 and a return pipe through hole 1312b adjacent to the pumping pipe through hole 1312a Containing and surrounding the upper portion of the cylindrical portion (1311) top plate portion (1312), the groundwater pumping pipe connection hole (1313a) connected to the upper end of the groundwater pumping pipe (120) and the groundwater pumping pipe connection hole (1313a) around It is arranged and includes a plurality of fluid drop holes (1313b) to allow the heat exchange fluid flowing into the heat exchange fluid guide chamber (130) to fall into the inner space of the ground water pumping pipe (120), and the lower end of the cylindrical part (1311). A chamber portion 131 including a lower plate portion 1313 covering the portion; And
An inlet portion 1321 connected to the ground water pumping pipe connection hole 1313a and communicating with the ground water pumping pipe 120, a bent portion 1322 bent from the inlet portion 1321 toward the pumping pipe through hole 1312a ), includes a twisted pipe 132 extending from the upper portion of the bent portion 1322 and connected to the pumping pipe through hole 1312a and an outlet portion 1323 communicating with the heat exchange fluid pumping pipe 150 Characterized by,
Storage tank variable operation type geothermal heating and cooling system. According to claim 2,
The pumping through hole 1312a of the top plate portion 1312 of the heat exchange fluid guide chamber 130 communicates with each other and has an array structure in which a plurality of small unit holes 1312a-1 are arranged along the circumferential direction of the top plate portion 1312. Have,
The top plate portion 1312 of the heat exchange fluid guide chamber 130 further includes a circular slit 1312c formed inside the edge adjacent to the edge of the top plate portion 1312,
The heat exchange fluid guide chamber 130,
The pipe coupling hole 181 coupled to the upper portion of the twist pipe 132, a guide protrusion 182 inserted into the circular slit 1312c on the lower surface and sliding along the circular slit 1312c, and the upper plate portion 1312 ) Connected to the heat exchange fluid return pipe 160 includes a pipe interference prevention hole 183 provided in a form surrounding the twisted pipe position variable plate 180 disposed above the top portion 1312;
A handle coupling column 191 which is connected to one side of the upper surface of the twisted pipe position variable plate 180 and extends a predetermined length in the upper direction of the geothermal well 10; And
Further comprising a rotary operation handle 192 is inserted into the inside of the geothermal well 10, the screw is coupled to the upper end of the handle coupling column 191 from the outside of the geothermal well 10,
When the rotation operation handle 192 is operated to the left and right, the twist pipe position variable plate 180 rotates so that the position where the twist pipe 132 is coupled to the small unit holes 1312a-1 is variable. Characterized by,
Storage tank variable operation type geothermal heating and cooling system.

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