KR101207521B1 - An air conditioning system - Google Patents

Abstract

The present invention relates to a cooling system, comprising: a refrigerator for supplying cold water by condensing compressed air of high temperature and high pressure using cooling water, a cooling tower for lowering the temperature of the cooling water whose temperature rises during the condensation process of the refrigerator, and supplying it to the freezer; A first cooling device for receiving cold water from the first cooling device to supply cold air to a predetermined zone, a second cooling device for independently driving and supplying cold air to a predetermined zone without supplying cold water from the refrigerator, the first cooling device and the second A condensed water storage tank for storing condensed water generated during a cooling air supply process of a cooling device, connected between the first cooling device and the condensed water storage tank, and between the second cooling device and the condensed water storage tank, Condensate collection pipe for collecting the condensate storage tank and the condensate stored in the condensate storage tank It includes a first condensed water supply pipe for supplying the cooling water of the refrigerator freezer, according to the present invention is supplied to the cooling water circulation pump of the cooling tower and the low temperature condensed water generated from the air conditioning system or has been inefficiently managed, Can be used to control effectively.

Description

Air Conditioning System {AN AIR CONDITIONING SYSTEM}

The present invention relates to a cooling system of a building, and more particularly, to a cooling system capable of recycling condensed water collected from a cooling device.

The present invention relates to a centrally supplied cooling system for a large building, to a large building, a refrigerator for producing a heat source to be used for cooling the basement floor or the lowest floor, a cold water pump for supplying cold water, which is a heat source produced in the refrigerator, to a cold water pump. Air conditioner that transfers the heat exchanged cold air to each room by using cold water transferred by the cold water, and a central coil such as heat coil and humidity unit to maintain constant temperature and humidity in electronic equipment room such as computer room for limited indoor cooling. A supply cooling system is included. In addition, a separate supply air conditioning system that provides cooling independently from the central supply air conditioning system is also installed in large buildings.

The refrigerator for producing heat source in the centralized cooling system can be divided into a system for producing and circulating chilled water for cooling in a cooling system, and a system for circulating the cooling water with a cooling tower for supplying cooling water for condensation of the refrigerator condenser. . The cold water circulation system and the cooling water circulation system of the conventional centralized cooling system have been operated as separate systems.

The cooling water circulation system absorbs heat from the condenser of the refrigerator, and when the cooling water becomes high temperature water of 35 to 37 ° C, it is pumped and delivered to the cooling tower by the cooling water circulation pump, and the high temperature cooling water is 28 to 32 ° C through heat exchange with air. It is cooled to, and is supplied to the condenser of the refrigerator again.

In the cold water circulation system, when cooling cold water releases heat from the evaporator of the freezer and is supplied to each of the above cooling devices with cold water of 6-7 ° C., the cold water is exchanged with the air passing through the air circulation of each cooling device. When the hot water is ˜12 ° C., hot water is formed into a circulation cycle in which the cold water is returned to the freezer.

Here, when the air circulation 의 of each cooling system passes through the cold water coil, low temperature condensation water of about 12 ° C. is generated on the surface of the low temperature coil part. It is discharged to civil drainage.

This condensed water is treated as an unnecessary generation generated by operating each cooling system. Although the condensed water is valuable energy generated by consuming high cost energy such as a boiler, a cooling tower, and various pumps for operating a refrigerator, the conventional system The situation is to discard this as a drain.

According to Korean Patent Publication (Publication No. 10-2008-0034296), a system using condensed water is configured by supplying condensed water generated in each cooling device to a cooling tower. However, in a centrally supplied cooling system, because the cooling tower is a kind of air-cooled heat exchanger, it is located on the roof of a well-ventilated building, while the place where the condensed water is collected is stored in the basement of the building and condensed from the basement to the top of the building. There is a problem in that the energy required to pump up the water is excessively consumed to install additional piping equipment required for pumping condensed water.

In addition, in recent years, rather than a single building's cooling system consisting of only a central supply type, a complex cooling system with a high proportion of geothermal systems and individual air conditioners is often used, so that the amount of condensate generated is greater than the supply capacity of the cooling tower cooling water. Often produced.

Thus, the above-mentioned patent, which is characterized by a system for simply supplying condensed water to the cooling tower, when the condensed water is generated excessively exceeds the natural reduction amount of the cooling water, the supplied condensed water overflows from the cooling tower tank before being supplied to the freezer. Accordingly, there may be a problem of excessive energy consumption to spread the heat source to the cooling tower.

The present invention provides a cooling system that can efficiently recycle the condensed water by improving the recycling method of the form of excessive consumption of energy even if the condensed water collected from each cooling device as described above is discarded to the outside and the condensed water is recycled. The purpose is to.

According to the present invention for achieving the above object, a cooling tower for supplying cold water by condensing compressed air of high temperature and high pressure using cooling water, a cooling tower for lowering the temperature of the cooling water of which the temperature rises during the condensation process of the refrigerator to supply to the freezer A first cooling device receiving cold water from the freezer and supplying cold air to a predetermined zone, a second cooling device which independently drives and supplies cold air to a predetermined zone without supplying cold water from the freezer, and the first cooling device And a condensed water storage tank for storing condensed water generated during a cold air supply process of the second air conditioner, between the first air conditioner and the condensed water storage tank, and between the second air conditioner and the condensed water storage tank, Condensate collection pipe for collecting condensate into the condensate storage tank and condensate stored in the condensate storage tank Provided is a cooling system including a first condensed water supply pipe for supplying condensed water as cooling water of the refrigerator.

The condensed water storage tank is disposed at a position higher than the cooling water circulation pump included in the freezer, so that condensed water may be supplied at a natural pressure.

A water level detecting device installed in the condensed water storage tank to detect an internal level of the condensed water storage tank; And when the amount of condensed water stored in the condensed water storage tank is greater than or equal to a threshold value, the condensed water may include an overflow pipe for naturally discharging the condensed water.

The first condensed water supply pipe may include: a check valve for preventing the condensed water from flowing backward; And it may include a strainer for filtering foreign matter contained in the condensed water.

The water level detecting device may be provided in plural to be spaced apart from each other on the inner wall surface of the condensed water storage tank.

The first condensed water supply pipe may include: a solenoid valve that blocks condensed water supply of the condensed water supply pipe when a low water level is detected by the level detecting device; And a condensed water supply pump supplying condensed water to the condensed water storage tank when the high water level is detected by the level detecting device.

The refrigerator further includes a cooling water discharge pipe for discharging the cooling water, wherein the cooling water discharge pipe may include an electronic valve for automatically discharging the cooling water when the condensed water supply flow rate exceeds a predetermined standard.

Further comprising a geothermal system for supplying cold air using geothermal heat, wherein the geothermal system may generate the cold air using the condensed water.

The geothermal system, a heat pump for supplying cold water by condensing compressed air of high temperature and high pressure using cooling water, an underground heat exchanger for lowering the temperature of the cooling water whose temperature rises during the condensation of the heat pump and resupplying the heat pump; It may include a heat exchanger for lowering the temperature of the cooling water discharged from the underground heat exchanger through heat exchange between the cooling water discharged from the underground heat exchanger and the condensed water.

A second condensed water supply pipe for supplying condensed water from the condensed water storage tank to the heat exchanger, a condensed water recovery pipe for delivering the condensed water discharged from the heat exchanger to the condensed water storage tank, and discharged from the underground heat exchanger; It may include a cooling water supply pipe for transmitting the cooling water to the heat exchanger and a circulation pipe for delivering the cooling water discharged from the heat exchanger to the heat pump.

When the storage capacity of the condensed water stored in the condensed water storage tank is lower than the threshold value, may further include a bypass pipe for bypassing the cooling water discharged from the underground heat exchanger to the circulation pipe.

As described above, the present invention can efficiently utilize the low temperature condensed water generated from the cooling device or the inefficiently managed condensed water to the cooling water circulation pump of the cooling tower and automatically controlled with the surrounding system.

In addition, it can be used for energy saving and renewable energy geothermal system, so that the overall energy saving of the cooling system in summer and the low carbon consumption caused by CO ₂ It is possible to provide a cooling system that is effective in solving global warming problems by suppressing the occurrence.

1 is a system diagram of a cooling system using condensed water.
2 is a schematic diagram for supplying condensed water and discharging hot coolant.
3 is a system diagram utilizing condensed water for geothermal cold water cooling.
4 is a system diagram of another embodiment in which condensed water is used for cooling geothermal cold water.
5 is a system diagram for recycling the discharge water of the hot coolant in the boiler feed water preheating.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 is a system diagram of a cooling system using condensed water according to the present invention.

As shown, the cooling system of the present invention includes a refrigerator (100), a cooling tower (200), first and second cooling devices (200, 300, 400, 500, 600), condensation water storage tank (700) and various piping.

The refrigerator 100 cools the compressed air of high temperature and high pressure generated in the process of producing cold water by using the cooling water in the condenser, and the cooling water used for cooling the condenser increases the temperature to lower the temperature from the outside to supply the cooling water again. do.

At this time, the equipment used in the cooling tower 200, when the cooling water is supplied to the condenser of the refrigerator by the cooling water circulation pump 50, the cooling tower 200 is located at the top of the building through the cooling water supply pipe 10 by absorbing heat from the condenser Supplied by.

When the cooling water is sprayed from the top to the bottom in the form of a drop in the upper part of the cooling tower, air is discharged from the upper part of the upper part of the cooling tower to reduce the temperature of the cooling water by contact with air, and then again through the cooling water circulation pipe 11. The system supplied to the freezer is a centrally supplied cooling system.

 Cold water of low temperature (usually 6 ~ 7 ℃) produced in the refrigerator 100 is supplied to the cooling tower 200, the air conditioner 300, the coil unit 400, the constant temperature and humidity 500. Here, the cooling tower 200, the air conditioner 300, the coil unit 400, the constant temperature and humidity 500, and the like, which are supplied with cold water from the refrigerator 100, are defined as the first cooling devices 200, 300, 400, and 500. .

When the cold water is supplied to the first air conditioner (200, 300, 400, 500), and the first air conditioner (200, 300, 400, 500) operates the air supply fan, the air introduced from the room (usually 24-26 ° C) is the cold water of the first air conditioner (200, 300, 400, 500). As it passes through a heat exchanger called a coil, it is changed to low-temperature air, and the low-temperature air is injected into the room to lower the acquired heat load that is continuously generated, such as human body heat in each room, device heat such as electronic equipment, and solar radiation heat to a window. Maintains a constant and comfortable room temperature. During the operation of this operation, condensed water is generated by the air passing through the cold water coil included in the first cooling devices 200, 300, 400, and 500.

On the contrary, the independent air conditioner 600, that is, the second air conditioner 600, which is configured as an air-cooled own equipment without supplying the cold water of the refrigerator, also functions to cool a part of the building, and the second air conditioner 600 Condensed water is also generated on the same principle as the first air conditioner (200, 300, 400, 500).

In general, the condensation generated in the central fed first air-conditioner (200, 300, 400, 500) was collected into the underground catchment of the building through a separate discharge pipe 14 and discharged to the sewer using a separate drain pump.

In the case of the second air conditioner 600, the drainage pipe is drawn out to a nearby drain or outside the building.

As such, the energy produced by consuming expensive energy in the refrigerator 100 has been disposed of in the form of condensed water.

In order to solve this problem, the system of the present invention includes a first cooling device (200, 300, 400, 500), a condensation water storage tank (700) for storing the condensed water generated in the cold air supply process of the second cooling room 600, and the first cooling The condensate collection pipe 14 for collecting the condensed water generated in the apparatus 200, 300, 400, 500 and the second cooling device 600 to the condensed water storage tank 700, and the condensed water stored in the condensed water storage tank 700. And a first condensed water supply pipe (15) for supplying the cooling water (100).

The condensate water collecting pipe 14 for collecting condensed water into the condensed water storage tank 700 is installed in a structure to prevent heat loss by protecting with a heat insulating material of sufficient thickness, and the condensed water storage tank 700 also prevents heat loss. Install a thermal insulation material of sufficient thickness in order to.

The condensed water storage tank 700 is provided with an overflow pipe 16 having a ventilation function and a drainage function at the upper side of one side wall, and a drain pipe 17 having a valve at the lower side of the condensed water storage tank 700. 700 may discharge the water inside.

The overflow pipe 16 has a ventilation function and a drainage function as described above. In particular, the drainage function will be described in more detail. When the amount of condensed water stored in the condensed water storage tank 700 is greater than or equal to a threshold, condensed water may be naturally discharged.

Then, by installing an electronic water level detecting device 57 capable of detecting the internal water level on the condensed water storage tank 700, the water level information can be checked in real time.

Meanwhile, a first condensed water supply pipe 15 connected to the coolant water supply pipe 11 connected to the refrigerator 100 and connected to a suction port is provided at a lower portion of the condensed water storage tank 700, and the coolant water supply pipe 11 is provided in the cooling water supply pipe 11. Cooling water circulation pump 50 is provided.

The condensed water storage tank 700 is installed at a position higher than the cooling water circulation pump 50 so as to supply condensed water at natural pressure when necessary.

In addition, the first condensed water supply pipe 15 may be provided with a check valve 52, a solenoid valve 53, a remote meter reading digital flow meter 54 and a strainer 55.

Here, the check valve 52 prevents the cooling water from flowing back toward the condensate storage tank 700, and the strainer 55 serves to filter foreign matter contained in the condensate.

In the condensed water storage tank 700, a plurality of water level detecting devices 57 for detecting the water level are provided to be spaced apart from each other. When the water level detecting device 57 is read at a low water level, the solenoid valve 53 is opened. To shut off the condensate supply.

The first condensed water supply pipe 15 is further provided with a condensed water supply pump 56, and condensed water when the condensed water storage tank 700 is read at a high water level by the water level detecting device 57. The supply pump 56 supplies condensed water to the condensed water storage tank 700.

Cooling water circulation pump 50 is installed and operated from one to a plurality depending on the building size, the cooling water circulation pump 50 and the cooling tower 200 is automatically adjusted by the central monitoring device according to the outdoor temperature and cooling load in summer do.

The condensed water supply pump 56 according to the present invention may also be installed in the same amount as the cooling water circulation pump 50, and the condensed water supply pump 56 and the solenoid valve according to whether the cooling water circulation pump 50 is operated. 58 may also be automatically linked to the supply or stopped supply.

In addition, condensation water is excessively generated and the supply of condensed water is more than the natural decrease of the cooling water, so that the discharge of high temperature condensed water increases, which may adversely affect the cooling system when the cooling water falls below an appropriate temperature (28 ° C.).

Therefore, when the cooling water inlet temperature is automatically detected in real time and lowered below a predetermined temperature (about 29 ° C.), the control of stopping or reducing the supply of condensed water or reducing the number of operating towers of the cooling tower 200 is performed.

2 is a schematic diagram of a cooling system for automatically supplying condensed water and discharging hot coolant according to an embodiment of the present invention.

The first condensed water supply pipe 15 is further provided with a condensed water supply pump 56 and communicates with a part of the cold water supply pipe 10 for discharging the cooling water from the refrigerator 100 to the cooling tower 200 to discharge the cooling water. Install the pipe (18).

In addition, the solenoid valve 58 and the remote meter digital flow meter 59 are installed in the coolant discharge pipe 18, and when the condensed water supply flow rate exceeds the preset standard by the solenoid valve 58, the coolant is automatically discharged. .

In general, the cooling water of the centralized cooling system is blown in the form of water droplets by the cooling operation of the cooling tower 200 during heat exchange with air in the cooling tower 200 or reduced by spontaneous evaporation. As such, when the amount of the total amount of cooling water is reduced by about 2% per hour, the water is replenished with water or the like. That is, when the cooling water stored in the water tank of the cooling tower 200 is below a certain amount, the cooling water is automatically replenished by the buoyancy valve.

On the other hand, when the natural decrease in the amount of cooling water increases when the condensed water is added according to the present invention, the high-temperature cooling water is discharged by comparing and analyzing the values of the solenoid valve 58 and the remote meter reading digital flow meter 59 of the cooling water discharge pipe 18. The total amount of coolant can be adjusted, and the total coolant temperature can be lowered by discharging the high temperature side coolant.

As described above, the condensed water storage tank 700 is provided with an overflow pipe 16 so that the condensed water may be naturally discharged when the condensed water in the condensed water storage tank reaches a threshold value or more. In particular, when the overflow pipe 16 is installed in the same position as the high water level among the plurality of water level detecting devices 57, when the condensed water is discharged, the condensed water supply pump 56 can be started immediately to replenish the condensed water. Waste can be prevented.

3 is a system diagram of a system utilizing condensed water for geothermal cooling water cooling according to an embodiment of the present invention.

In general, large buildings may further include a geothermal system that supplies cold air using geothermal heat for legal purposes or energy saving.

The geothermal system, like the refrigerator 100, uses a cooling water to condense compressed air of high temperature and high pressure to supply cold water, and a cold water supply pipe 10 and 11 to supply cold water to the refrigerator 100. Geothermal cold water supply pipe (25, 26) to perform the same role as the geothermal cold water circulation pump (63), which performs the same role as the cold water circulation pump (51) of the refrigerator 100, serves as a cooling tower 200 of the refrigerator. And a ground heat exchanger (1200) for lowering the temperature of the cooling water whose temperature rises in the condensation process of the heat pump (1100) and resupplying it to the heat pump (1100), and cooling water and condensed water discharged from the ground heat exchanger (1200). It includes a heat exchanger 1000 for lowering the temperature of the cooling water discharged from the underground heat exchanger 1200 through heat exchange of the.

Referring to the system using the condensed water of the cooling apparatus according to the present invention for geothermal cooling water cooling of the geothermal system as an example.

Between the condensation water storage tank 700 and the underground heat exchanger 1200, a high-efficiency heat exchanger 1000 such as a plate heat exchanger is installed and the condensed water storage tank 700 is connected to the inlet side of the heat exchanger 1000. A second condensed water supply pipe 19 for supplying condensed water to the heat exchanger 1000 and a condensed water recovery pipe 20 for connecting the outlet side of the heat exchanger 1000 and the condensed water storage tank 700 are provided. do.

The condensed water supply pipe 19 is provided with a condensed water circulation pump 60 to smoothly circulate the supply of condensed water between the condensed water storage tank 700 and the heat exchanger 1000.

Meanwhile, a cooling water supply pipe 22 connecting another inlet side of the heat exchanger 1000 and an outlet side pipe of the underground heat exchanger 1200, and another outlet side and a heat pump 1100 of the heat exchanger 1000. By providing a circulation pipe 23 connected to the inlet side of the condensed water storage tank 700, the condensed water is circulated directly to utilize the condensed water as geothermal cooling water.

When the amount of condensed water is excessive and the quantity of water to be utilized for the geothermal heat is sufficient, or when the plurality of underground heat exchangers 1200 are operated, the operation number of the heat pump 1100 and the underground heat exchanger 1200 is automatically controlled. It is possible to reduce the cold water temperature, which is insufficient in geothermal heat, to heat the condensed water to the target temperature, so that the operation of the heat pump 1100 and the geothermal cooling water circulation pump 62 may be reduced, thereby achieving energy saving effects.

When the storage capacity of the condensed water stored in the condensed water storage tank 700 is lower than the threshold value, the cooling water discharged from the underground heat exchanger 1200 is discharged by the bypass pipe 24 provided in the cooling water supply pipe 22. Bypass to the circulation pipe (23).

In more detail, the cooling water supply pipe 22 further includes a circulation pump 62 spaced apart from the bypass pipe 24, and the cooling water supply pipe 22 and the bypass pipe 24 are connected to each other. The three-way valve 61 is provided at the position where the cooling water can be bypassed without passing through the heat exchanger 100 when heat exchange is not possible due to the depletion of the condensed water or the failure of the condensed water side and the heat exchanger 1000. will be.

4 is an opening diagram of another embodiment using condensed water for geothermal cold water cooling according to an embodiment of the present invention.

A separate heat exchanger 201 is provided inside the condensed water storage tank 700. The inlet side of the separate heat exchanger 201 is connected to the outlet pipe 20 of the heat exchanger 1000 for geothermal heat exchange. In addition, the outlet side of the separate heat exchanger 201 may be connected to the inlet pipe of the heat exchanger 1000 for geothermal heat exchange, and condensed water may be utilized in the form of indirect heat exchange with the heat exchanger 1000 with the geothermal cooling water. .

The cooling system according to the present invention can be efficiently utilized by supplying the low temperature condensed water generated from the cooling device or managed inefficiently to the cooling water circulation pump of the cooling tower and automatically controlled with the surrounding system.

In addition, it can be used for energy saving and renewable energy geothermal system, so that the overall energy saving of the cooling system in summer and the low carbon consumption caused by CO ₂ It is also effective in solving the problem of global warming by suppressing the occurrence.

On the other hand, Figure 5 is another embodiment of the present invention relates to a system for recycling the refrigerator cooling water in the boiler.

Similar to the previous embodiment, including a refrigerator 100 and a cooling tower 200, the discharge water storage tank 800 for storing the cooling water, the boiler 900 for heating and discharging the supply water, and the discharge water storage tank 800 A heat exchanger 271 further performs heat exchange based on the heat source of the cooling water stored in the.

The discharge water pipe 18 of the refrigerator 100 is connected to the inside of the discharge water storage tank 800, and an overflow pipe 29 having a ventilation function is installed at an upper side of the discharge water storage tank 800.

The overflow pipe 29 extends a portion into which the discharged water flows into the discharged water storage tank 800 to the lower portion of the discharged water storage tank 800, and the discharged water storage tank 800 among the portions located outside the discharged water storage tank 800. The horizontally connected to and bent in the lower portion is further provided with a vent to prevent the entire discharged water is discharged by the siphon phenomenon when the discharged water is discharged.

The temperature of the cooling water stored in the discharge water storage tank 800 is higher than the temperature of the supply water, and the inlet side of the heat exchanger 271 is connected to the water supply for boiler 900 water supply, and the outlet side is installed in the boiler water supply pipe to heat exchanger 271. The preheating of the supply water supplied to the boiler 900 is delivered to the boiler 900.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: freezer 200: cooling tower
300: Air Conditioner (AHU) 400: Heat Coil Unit (FCU)
500: constant temperature and humidity 600: air conditioner (package or system)
700: condensate storage tank 800: cooling water discharge water storage tank
900: boiler 1000: heat exchanger
1100: geothermal heat pump 1200: underground heat exchanger

Claims (13)

In a cooling system utilizing the condensation water of the cooling device,
Refrigerator that supplies cold water by condensing compressed air of high temperature and high pressure using cooling water,
Cooling tower for lowering the temperature of the cooling water in the condensation process of the refrigerator to supply to the freezer,
A first cooling device receiving cold water from the freezer and supplying cold air to a predetermined zone;
A second cooling device for supplying cold air to a predetermined region by driving independently without supplying cold water to the refrigerator;
A condensation water storage tank for storing condensation water generated during a cold air supply process of the first air conditioning apparatus and the second air conditioning apparatus;
A condensed water collection pipe connected between the first air conditioner and the condensed water storage tank and between the second air conditioner and the condensed water storage tank to collect the condensed water into the condensed water storage tank;
And a first condensed water supply pipe for supplying condensed water stored in said condensed water storage tank as cooling water of said refrigerator. The method of claim 1,
The condensate storage tank is disposed in a position higher than the cooling water circulation pump included in the freezer, the cooling system for supplying condensed water at natural pressure. The method of claim 1,
A water level detecting device installed in the condensed water storage tank to detect an internal level of the condensed water storage tank; And
And an overflow pipe for naturally discharging the condensed water when the condensed water storage amount stored in the condensed water storage tank is equal to or greater than a threshold value. The method of claim 1,
The first condensed water supply pipe,
A check valve for preventing the condensate from flowing backward; And
Cooling system comprising a strainer for filtering foreign matter contained in the condensed water. The method of claim 3, wherein
The water level detecting device is provided with a plurality of air spaced apart from each other on the inner wall surface of the condensate storage tank. The method of claim 5, wherein
The first condensed water supply pipe,
A solenoid valve that blocks the condensed water supply of the first condensed water supply pipe when the low water level is detected by the water level detecting device; And
And a condensed water supply pump supplying condensed water to the condensed water storage tank when the high water level is detected by the level detecting device. The method of claim 1,
The refrigerator further comprises a cooling water discharge pipe for discharging the cooling water,
The cooling water discharge pipe comprises a solenoid valve for automatically discharging the cooling water when the condensed water supply flow rate exceeds a predetermined standard. The method of claim 1,
It further comprises a geothermal system for supplying cold air using geothermal,
And the geothermal system generates the cold air using the condensed water. The method of claim 8,
The geothermal system,
Heat pump to supply cold water by condensing compressed air of high temperature and high pressure using cooling water,
An underground heat exchanger for resupplying the heat pump by lowering the temperature of the cooling water having risen in temperature during the condensation of the heat pump;
And a heat exchanger for lowering the temperature of the cooling water discharged from the underground heat exchanger through heat exchange between the cooling water discharged from the underground heat exchanger and the condensed water. The method of claim 9,
A second condensed water supply pipe for supplying condensed water from the condensed water storage tank to the heat exchanger,
A condensed water recovery pipe for delivering the condensed water discharged from the heat exchanger to the condensed water storage tank;
A cooling water supply pipe for transferring the cooling water discharged from the underground heat exchanger to the heat exchanger;
And a circulation pipe for transferring the cooling water discharged from the heat exchanger to the heat pump. 11. The method of claim 10,
And a bypass pipe for bypassing the cooling water discharged from the underground heat exchanger to the circulation pipe when the storage capacity of the condensed water stored in the condensed water storage tank is lower than a threshold value. In a boiler system for recycling chiller coolant,
Storing a cooling water discharged from a cooling system including a refrigerator for condensing compressed air of high temperature and high pressure using cooling water to supply cold water, and a cooling tower for lowering the temperature of the cooling water whose temperature rises during the condensation process of the refrigerator and supplying it to the refrigerator. Effluent storage tank,
A boiler for heating and discharging the feed water;
Including a heat exchanger to perform heat exchange based on the heat source of the cooling water stored in the discharge water storage tank,
The temperature of the cooling water stored in the discharge water storage tank is higher than the temperature of the supply water,
The heat exchanger is a boiler system for preheating the supply water supplied to the boiler to deliver to the boiler. 13. The method of claim 12,
The discharge water storage tank includes an overflow pipe, wherein the overflow pipe extends to a lower portion of the discharge water storage tank, and discharges a portion of the discharge water at the lower portion of the discharge water storage tank to the outside.

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