KR100698021B1 - Building cooling and heating system using runoff groundwater and geothermal heat pump - Google Patents

Abstract

The present invention in the building air conditioning system using a heat pump, the first heat pump; A first heat exchanger serving as a heat source or heat sink of the first heat pump; A second heat pump; And a second heat exchanger serving as a heat source or a heat sink of the second heat pump, wherein the first heat exchanger is installed at a lower part of the building to store the outflow groundwater. A first heat exchange pipe in the form of a coil installed in the water storage tank to exchange heat with the stored groundwater; And a first circulation fluid including an antifreeze circulating in the first heat exchange pipe, wherein the second heat exchanger includes: a second heat exchange pipe embedded in the partition wall of the water storage tank; And a second circulating fluid including an antifreeze circulating inside the second heat exchange pipe.

Description

Building and heating system using discharge groundwater and geothermal heat pump {Heating and Cooling system using Discharged ground water and Ground source heat pump}

1 is a conceptual diagram schematically showing the components of the present invention.

2 is a perspective view showing a first heat exchanger and a second heat exchanger of the present invention.

3 is a cross-sectional view of the drain pipe and the first heat exchange pipe.

4 illustrates a state in which barrier ribs are additionally installed at upper and lower portions of the drain pipe.

<Description of the symbols for the main parts of the drawings>

11: First heat pump

22: second heat pump

100: first heat exchanger

110: first heat exchange pipe 111: first circulation fluid

200: second heat exchanger

210: second heat exchange pipe 211: second circulation fluid

300: water storage tank

301: outflow groundwater

310: drain pipe 315: suction port

316: bulkhead

Field of technology

The present invention relates to a building cooling and heating system using a heat pump, and more particularly, to heat exchange from each of the groundwater and the groundwater, and to operate the heat pump using the technical features to implement the heating and cooling of the building.

Prior art

Geothermal source heat pump system is largely a combined heating and cooling system consisting of a ground heat exchanger and a heat pump.

Geothermal source heat pump system operating in a cooling cycle releases the heat absorbed indoors through the ground heat exchanger, and in the case of the heating cycle, the ground heat exchanger absorbs heat from the ground and supplies it to the room. Geothermal heat is referred to collectively as ground (ground), ground water (surface water), surface water (surface water).

Geothermal source heat pump system has the advantages of less energy consumption than air source heat pump, no equipment exposed to the atmosphere, and relatively low amount of refrigerant used, but the initial stage of the whole system including underground heat exchanger buried There is a problem that the installation cost is excessive than the existing heating and heating equipment.

Geothermal source heat pump system is a system that enables the heating and cooling of buildings by simultaneously using the inside of the soil, groundwater or surface water which is less susceptible to changes in outside air temperature as a heat sink for cooling and as a heat source for heating. Heat exchange is performed using the circulating fluid and the ground temperature difference.

In the case of using underground water among the underground heat exchangers, when the conventional plate heat exchanger is used, foreign matter contained in the groundwater flowing inside the plate heat exchanger is precipitated and adhered to the inside of the plate heat exchanger. There has been a problem of cleaning or replacing the plate heat exchanger.

In addition, in the case of using a heat exchange element made of a metal material, the initial heat exchange efficiency can secure the required level in design, but when foreign matter is adhered to the surface of the heat exchange element, there is a problem in that the heat exchange efficiency drops sharply.

The object of the present invention created to solve the above problems is as follows.

First, it is an object of the present invention to provide an outflow groundwater and geothermal source heat pump system that can minimize the initial installation cost.

Secondly, it is another object of the present invention to provide an outflow groundwater and geothermal source heat pump system capable of minimizing maintenance costs.

Third, another object of the present invention is to provide an outflow groundwater and a geothermal source heat pump system capable of maintaining a constant heat exchange efficiency.

The configuration of the present invention created to solve the above problems is as follows.

The present invention in the building air conditioning system using a heat pump, the first heat pump; A first heat exchanger serving as a heat source or heat sink of the first heat pump; A second heat pump; And a second heat exchanger serving as a heat source or a heat sink of the second heat pump, wherein the first heat exchanger is installed at a lower part of the building to store the outflow groundwater. A first heat exchange pipe in the form of a coil installed in the water storage tank to exchange heat with the stored groundwater; And a first circulation fluid including an antifreeze circulating in the first heat exchange pipe, wherein the second heat exchanger includes: a second heat exchange pipe embedded in the partition wall of the water storage tank; And a second circulation fluid including an antifreeze circulating inside the second heat exchange pipe.

As such, the present invention relates to a heat pump system using the outflow groundwater stored in the storage tank installed in the lower part of the building as a geothermal source.

Hereinafter, with reference to the accompanying drawings, a specific embodiment of the present invention will be described in detail.

1 is a conceptual diagram schematically showing the components of the present invention.

As can be seen from FIG. 1, the present invention is composed of two heat pumps.

The first heat pump 11 exchanges heat with the first heat exchanger 100, and the second heat pump 22 exchanges heat with the second heat exchanger 200.

In other words, the first heat exchanger 100 and the second heat exchanger 200 may be a heat source or a heat sink of the first heat pump 11 and the second heat pump 22, respectively. do.

In other words, it acts as a heat sink during cooling and as a heat source during heating.

Specific configurations of the first heat pump 11 and the second heat pump 22 are the same as those of a general heat pump system, and thus description thereof is omitted.

2 is a perspective view showing a first heat exchanger and a second heat exchanger of the present invention;

The first heat exchanger 100 is installed in the lower part of the building and is installed inside the water storage tank 300 for storing the outflow groundwater 301. 110, and a first circulation fluid 111 including an antifreeze circulating in the first heat exchange pipe 110.

The first circulation fluid 111 may exchange heat with the refrigerant circulating in the first heat pump 11, but a detailed description thereof is omitted.

The first heat exchange pipe 110 is configured in a coil shape to maximize the contact area with the outflow groundwater 301.

As shown in FIG. 3, when the outflow groundwater 301 stored in the water storage tank 300 exceeds a predetermined level, a drain pipe 310 for discharging it to the outside is provided separately, and the drain pipe 310 includes a first heat exchange pipe ( It is installed to pass through the center of the coil of the 110, the end of the drain pipe 310 is provided with a plurality of suction ports 315 along the outer peripheral surface.

As the inlet 315 is provided, the outflow groundwater 301 flows around the first heat exchange pipe 110 smoothly in the process of discharging the outflow groundwater 301, thereby achieving more effective heat exchange.

As shown in FIG. 4, the partition wall 316 is installed on the upper and lower portions of the drain pipe 310 to block the coil end surface of the first heat exchange pipe 110.

As such, when the partition wall 316 is provided, when the outflow groundwater 301 is discharged through the inlet 315 provided in the drain pipe 310, the outflow groundwater 301 through the upper and lower coil end surfaces of the first heat exchange pipe 110. Is prevented from flowing in, and the outflow ground water 301 is introduced into the coil of the first heat exchange pipe 110 through the side surface of the first heat exchange pipe 110 so that the outflow ground water 301 and the first heat exchange pipe ( Heat exchange between 110 is more effective.

The second heat exchanger 200 includes a second heat exchange pipe 210 embedded in the partition wall of the water storage tank 300, and a second circulation fluid 211 including an antifreeze circulating inside the second heat exchange pipe 210. ).

The second circulation fluid 211 also exchanges heat with the refrigerant circulating in the second heat pump 22, but a detailed description thereof is omitted.

The second heat exchange pipe 210 may be installed only inside the bottom wall of the water storage tank 300 as shown in FIG. 2, but is also installed in the side wall of the water storage tank 300, although not shown in FIG. 2 as necessary. It may be installed in both the bottom wall and the side wall of the reservoir tank.

The arrangement of the second heat exchange pipe 210 is preferably arranged in a zigzag form as shown in FIG. 2, but is not necessarily limited thereto.

The first heat exchange pipe 110 and the second heat exchange pipe 210 may be made of metal, but in a specific embodiment of the present invention, a synthetic resin such as polyethylene (PE) is used.

When synthetic resin is used as described above, even if foreign matters are deposited and adhered to the surface, there is almost no change in heat exchange efficiency, and thus the heat exchange efficiency corresponding to the initial design value can be continuously maintained without any maintenance.

The first heat pump 11 working with the first heat exchanger 100 and the second heat pump 22 working with the second heat exchanger 200 may be selected to operate individually or simultaneously. .

In other words, if necessary, only the first heat pump 11 or the second heat pump 22 may be operated to cover the heating and cooling load of the building, and the first heat pump 11 and the second heat pump 22 may be simultaneously It can also be operated to share the building's heating and cooling loads.

First, it is possible to provide an outflow groundwater and geothermal heat pump system that can minimize the initial installation cost.

In other words, the present invention uses the outflow groundwater reservoir tank provided in the basement of the building as a geothermal source, it is possible to minimize the initial installation cost.

Second, we can provide runoff groundwater and geothermal heat pump systems that can minimize maintenance costs.

In other words, the first circulation fluid and the second circulation fluid separate from the outflow groundwater are respectively circulated in the first heat exchange pipe and the second heat exchange pipe, and contamination of the inside of the heat exchanger due to foreign matter contained in the underground effluent is prevented. By selecting a synthetic resin for the material of the first heat exchange pipe and the second heat exchange pipe, even if foreign matter contained in the underground effluent adheres to the surfaces of the first heat exchange pipe and the second heat exchange pipe, the heat exchange efficiency does not decrease significantly. It is effective and can be economical by minimizing the cost for maintenance.

Third, it is possible to provide an outflow groundwater and a geothermal source heat pump system that can maintain a constant heat exchange efficiency.

In other words, by selecting a synthetic resin as a material of the first heat exchange pipe and the second heat exchange pipe, even if foreign matter contained in the underground effluent adheres to the surfaces of the first heat exchange pipe and the second heat exchange pipe, the heat exchange efficiency does not significantly decrease.

In the case of a metal material, the thermal conductivity is greatly different from the case where the foreign matter is adhered to the surface and the case is not adhered, but in the case of synthetic resin, the difference is not large.

Claims (5)

In building air conditioning system using heat pump, A first heat pump; A first heat exchanger serving as a heat source or heat sink of the first heat pump; A second heat pump; And, A second heat exchanger serving as a heat source or a heat sink of the second heat pump; Consists of including The first heat exchanger, A first heat exchange pipe installed in a lower portion of the building and having a coil shape to exchange heat with the stored discharge groundwater installed inside the storage tank for storing the discharge groundwater; And, A first circulating fluid containing an antifreeze circulating in the first heat exchange pipe; Including, The second heat exchanger, A second heat exchange pipe embedded in the partition wall of the water storage tank; And, A second circulation fluid containing an antifreeze circulating in the second heat exchange pipe; Building cooling and heating system using an outflow groundwater and geothermal heat source pump, characterized in that comprising a. In claim 1, A drain pipe installed to pass through the center of the coil of the first heat exchange pipe and discharged to the outside when the outflow ground water stored in the water storage tank exceeds a predetermined level; Includes more, Building cooling and heating system using an outflow ground water and geothermal heat source pump, characterized in that the end of the drain pipe is provided with a plurality of suction ports along the outer peripheral surface. In claim 2, The first heat exchange pipe and the second heat exchange pipe is a building cooling and heating system using the discharge ground water and geothermal heat source pump, characterized in that the material of the synthetic resin. In any one of claims 2 or 3, A partition wall disposed on at least one of upper and lower portions of the drain pipe to block a coil end face of the first heat exchange pipe; Building cooling and heating system using the discharge groundwater and geothermal heat source pump, characterized in that it is further provided. In claim 4, And wherein the first heat pump and the second heat pump can be selected to operate individually or simultaneously.

Images