JP6475385B1 - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling device capable of efficiently cooling a large-scale space without increasing the capital investment and operating cost of the cooling device.
SOLUTION: A cold wind panel 21 provided with an endothermic pipe for circulating circulating water, a main heat exchanger 31 for performing heat exchange between the circulating water and groundwater, and groundwater is sprayed on a filler 57 to increase the groundwater temperature. A cooling tower 50 to be lowered, and an intake duct 71 and an air duct 75, and at least one of the intake duct 71 and the air duct 75 has a water-cooled heat exchanger that performs heat exchange between air in the duct and groundwater. The air duct 77 of the air duct 75 is disposed so as to face the plane of the cold air panel 21 in the immediate vicinity of the cold air panel 21, and the air blown out from the air outlet 77 is applied to the air blowing panel 21. It is assumed that the cooling device 20 is sent out from the port 77.
[Selection] Figure 1

Description

  The present invention relates to a cooling device that reduces high temperature in a large-scale space such as a factory.

  Conventionally, when operating various equipment that is a source of high-temperature heat in buildings such as factories where it is difficult to close the space, the outside air of the building is taken into the building using a large blower and the hot air inside the building is built. In many cases, they were released outdoors.

  However, it is difficult to eliminate severe environmental conditions for workers, even if it is possible to reduce the increase in the temperature of a large-scale space used as a workplace by only taking in outside air, and various proposals have been made to use a cooling device. It has also been implemented.

  For example, in the example shown in Patent Document 1, high-temperature air near the upper ceiling of a factory is sucked through a duct, and after performing primary cooling by heat exchange with outside air using a heat exchanger, temperature adjustment is performed by an air conditioning cooler. By blowing out from the bottom of the side wall of the factory and the vent on the floor and supplying low-temperature air to the vicinity of the floor, it is possible to reduce the operating cost of the cooling system and improve the work efficiency of workers. Proposed.

JP-A-4-76326

  In a large-scale space such as a factory, simply taking outside air with a blower or the like is not sufficient to prevent the working space from becoming too hot when using a large device as a heat generation source. In the case of using a cooling device that uses the air conditioner, there has been a problem that the capital investment and operating cost of the cooling device are increased.

  The present invention provides a cooling device that can solve such problems and efficiently cool a large-scale space.

The cooling device according to the present invention includes a cold wind panel provided with a heat absorption pipe for circulating circulating water, a main heat exchanger for performing heat exchange between the circulating water and groundwater, and watering the groundwater to the filler. A cooling tower that lowers the temperature of groundwater, an intake duct and an air duct, and at least one of the intake duct and the air duct is provided with a water-cooled heat exchanger that exchanges heat between air in the duct and the ground water And the air duct has an air outlet that is disposed in opposition so as to face the plane of the cold air panel in the immediate vicinity of the cold air panel, and the air discharged from the air outlet is applied to the cold air panel. It sends out from a ventilation port.

  Further, the intake duct and the air duct are connected via an exhaust heat exchanger provided in an exhaust pipe of the cooling tower, and between the air passing through the intake duct and the air duct and the exhaust from the cooling tower. It is characterized in that heat exchange is performed.

  And it is the said water cooling heat exchanger, Comprising: The water cooling heat exchanger provided in the said ventilation duct is connected to the said cooling tower while being connected to the said main heat exchanger, and groundwater via the said main heat exchanger is supplied. It sends to the said cooling tower through the water-cooling heat exchanger provided in the said ventilation duct, It is characterized by the above-mentioned.

  Furthermore, the water-cooled heat exchanger, which is provided in the intake duct, is supplied with groundwater stored in the cooling tower and passes through the water-cooled heat exchanger provided in the intake duct. The groundwater is returned to the cooling tower or discharged outside as drainage.

  In addition, the cooling tower is disposed in a building that forms a space for cooling, an exhaust port of an exhaust pipe of the cooling tower is disposed outside the building, and an intake port of the intake duct is the inside of the building. It may be arranged above the space.

  And while having the said water cooling heat exchanger in the said intake duct, it is preferable to have the said water cooling heat exchanger also in the said ventilation duct.

  Still further, a ventilation heat exchanger is attached to the ventilation device of the building where the cooling tower is arranged, and the ventilation heat exchanger is connected to the main heat exchanger in parallel with the cold wind panel, and from the main heat exchanger The circulating water may also be circulated through the ventilation heat exchanger, and heat may be exchanged between outside air taken into the building and the circulating water.

  The cooling device according to the present invention includes a cold air panel, a main heat exchanger, a cooling tower, an intake duct, and an air duct, and at least one of the intake duct and the air duct includes a water-cooled heat exchanger, and further the air duct. Since the air outlet of the air blows the air discharged from the air outlet in the immediate vicinity of the cold air panel to the cold air panel, the indoor air that passes through the air intake duct or the air duct by the water cooling heat exchanger provided in the air intake duct or the air duct. In addition, the indoor air blown out from the air outlet of the air duct can be cooled by hitting the panel for cold air, and the indoor temperature is lowered by the sensible heat and latent heat of the groundwater in order to effectively reduce the indoor air temperature. Can be lowered.

  Further, the intake duct and the air duct are connected via an exhaust heat exchanger provided in the exhaust tube of the cooling tower, and heat exchange is performed between the air passing through the intake duct and the air duct and the exhaust from the cooling tower. Therefore, the indoor air passing through the intake duct and the air duct is cooled by the water-cooled heat exchanger in the air intake duct or the air duct and also cooled by the exhaust heat exchanger, and the temperature is lowered in a stepwise manner. Can cool indoor air.

  The water-cooled heat exchanger provided in the air duct is a water-cooled heat exchanger that sends groundwater through the main heat exchanger to the cooling tower through the water-cooled heat exchanger provided in the air duct. After cooling the circulating water with the main heat exchanger, the indoor air passing through the air duct is cooled by the water-cooled heat exchanger with the groundwater, and the indoor air whose temperature is lowered by the water-cooled heat exchanger is applied to the cold wind panel and pumped up. The temperature of the circulating water is kept low by the low temperature groundwater, the temperature of the indoor air blown out through the air duct is lowered sequentially, and the water temperature is gradually raised by the main heat exchanger and the water cooling heat exchanger in the air duct. The cooling water is cooled by the cooling tower, and the rise in the temperature of the groundwater used as cooling water is suppressed by keeping the temperature of the cooling water stored in the cooling tower constant by the operation of the sprinkling pipes and blowers and the function of the filler. Door can be.

  Furthermore, the water-cooled heat exchanger provided in the intake duct is supplied with groundwater stored in the cooling tower and cools the groundwater through the water-cooled heat exchanger provided in the intake duct. Since it returns to the tower or is discharged outside as drainage, the indoor air passing through the intake duct and the air duct can be effectively cooled by the sensible heat of the groundwater cooled by the cooling tower.

  The cooling tower is disposed in a building that forms a space for cooling, the exhaust port of the exhaust tower of the cooling tower is disposed outside the building, and the intake port of the intake duct is disposed above the building space. Therefore, high-temperature air above the indoor space is sucked in by the intake duct, cooled through the intake duct and the air duct, and further, the air discharged from the air duct can be cooled by the cold wind panel, and in the building Hot air can also be drawn into the cooling tower and discharged outdoors.

  In addition to having a water-cooled heat exchanger in the intake duct and a water-cooled heat exchanger in the air duct, the high-temperature indoor air sucked in by the air intake duct is cooled by sensible heat of groundwater through the cooling tower, The indoor air passing through the duct can be cooled with the sensible heat of the groundwater through the main heat exchanger, and cooled with the panel for cold air by the sensible heat of the circulating water heat-exchanged with the groundwater pumped up from the air duct, When performing multi-stage cooling with the intake duct and the air duct, it is possible to cool the high-temperature air in sequence to effectively lower the temperature.

  When connecting an air intake duct having a water-cooled heat exchanger and an air duct having a water-cooled heat exchanger via an exhaust heat exchanger provided in an exhaust pipe of the cooling tower, the indoor air sucked in the intake duct is cooled by the cooling tower. When cooling with sensible heat of groundwater through the air and sending it to the air duct, it is cooled by the exhaust heat exchanger with the sensible heat of the indoor air cooled by the heat of vaporization of the groundwater in the cooling tower, and then main heat exchange in the air duct It can cool with the sensible heat of groundwater through a vessel, and the temperature of indoor air passing through the intake duct and the air duct can be lowered more effectively.

  Furthermore, a ventilation heat exchanger is attached to the ventilation device of the building where the cooling tower is arranged, and the ventilation heat exchanger is connected to the main heat exchanger in parallel with the cold air panel, and the circulating water from the main heat exchanger is When circulating in the ventilation heat exchanger and exchanging heat between the outside air taken into the building and the circulating water, even when the outdoor air temperature is high, the temperature is lowered and taken indoors to increase the indoor temperature. Can be prevented.

The figure which shows the outline | summary of the air conditioner which concerns on this invention. The figure which shows the outline | summary of the other example of the air conditioner which concerns on this invention. The figure which shows the outline | summary of the other example of the air conditioner which concerns on this invention.

  As shown in FIG. 1, an embodiment of a cooling device according to the present invention has a cold wind panel 21 that circulates circulating water cooled by exchanging heat with groundwater, and blows air onto the cool wind panel 21. It has a cooling tower 50 for cooling the air duct 75 and the ground water, and the air sent to the air duct 75 is cooled by exchanging heat with the ground water after heat exchange with the circulating water and the exhaust air of the cooling tower 50. The indoor air is circulated through a plurality of heat exchangers to lower the air temperature in the building 10.

  That is, in a building 10 such as a factory in which devices that serve as a high-temperature heat generation source 18 are installed, an air inlet 73 for sucking air in the building 10 is arranged in an upper space in the building 10, and this air inlet 73 is provided. An intake fan 81 and a first water-cooled heat exchanger 85 are provided in the intake duct 71, a second blower fan 83 and a second water-cooled heat exchanger 87 are provided in a blower duct 75 connected to the intake duct 71, and a blow tact. The cool air panel 21 is disposed in the vicinity of the air blowing port 77.

  And this cold wind panel 21 has a plane with high heat conductivity, a heat absorption pipe around the plane, or a heat absorption pipe meandering on the plane, and a circulating water return pipe provided with a circulation pump 35 The endothermic pipe is connected to the main heat exchanger 31 by 33 and the circulating water feed pipe 32, and the circulating water (brine) passing through the secondary side pipe of the main heat exchanger 31 is circulated to the endothermic pipe.

  Then, ground water such as well water is supplied to the primary side pipe of the main heat exchanger 31, and the circulating water passing through the secondary side pipe is sent to the cold wind panel 21 at a temperature of about 15 ° C to 20 ° C. is there.

  The primary pipe of the main heat exchanger 31 is connected with a pumping pipe 43 and a first pipe 37 provided with a water supply pump 41, and groundwater pumped by the pumping pipe 43 is passed through the primary pipe of the main heat exchanger 31. To the first pipe 37.

  The first pipe 37 is connected to a water inlet of a second water-cooled heat exchanger 87 disposed in the air duct 75, and a water outlet of the second water-cooled heat exchanger 87 is connected to a cooling tower by a second pipe 38. 50 water tanks 52 are connected.

  The cooling tower 50 has a water tank 52 inside the bottom 51, a body wall 55 continuous from the bottom 51 above the bottom 51, and an air intake 56 at the lower part of the body wall 55. There is a filler 57 inside the body wall 55 above the port 56, a water spray pipe 61 that sprinkles the filler 57 above the filler 57, and the air sucked from the air intake 56 of the cooling tower 50. A blower 63 for discharging from the upper part is provided.

  The water tank 52 is connected to the water inlet of the first water-cooled heat exchanger 85 disposed in the intake duct 71 by the third pipe 46 provided with the cooling water delivery pump 45, and the first water-cooled heat exchanger 85 is connected. The water outlet is connected to the water sprinkling pipe 61 of the cooling tower 50 by the fourth pipe 47.

  The water tank 52 of the cooling tower 50 is provided with a float 59 for detecting the level of the groundwater stored in the water tank 52, and is opened and closed to discharge the cooling water that is the groundwater stored in the water tank 52. A discharge pipe 48 provided with a valve 49 is connected.

  Further, the intake duct 71 has an intake fan 81 for sucking air in the building 10 from the intake port 73, and has a first blower fan 82 near the discharge end of the intake duct 71, and the intake duct The discharge end portion of 71 is connected to an exhaust heat exchanger 86 which is a gas / gas heat exchanger to which the exhaust pipe 65 of the cooling tower 50 is connected.

  The blower duct 75 including the second water-cooled heat exchanger 87 has a second blower fan 83 near the suction end of the blower duct 75 and connects the suction end of the blower duct 75 to the exhaust heat exchanger 86. It is what you are doing.

  In addition, the air duct 75 discharges from the second water-cooled heat exchanger 87, and the air duct 75 is divided into a plurality of air outlets 77 on the discharge end side. Thus, the air is fixed so as to be opposed to the plane of the cold wind panel 21, and the air blown out from the air blowing port 77 is blown to the cold wind panel 21.

  Note that the exhaust pipe 65 of the cooling tower 50 has an exhaust port 66 located outside the building 10 so that the exhaust discharged from the cooling tower 50 and exhausted through the exhaust heat exchanger 86 is discharged to the outside of the building 10. .

  As described above, the cooling device 20 in the present embodiment is the first water that passes the high-temperature air in the building 10 through the cooling water of the cooling tower 50 that is groundwater that is heat-exchanged with circulating water or air in the building 10. This is indoor air whose temperature is lowered while passing through the intake duct 71 by the cold heat exchanger 85, and further, which is lowered by heat of vaporization in the cooling tower 50 by the exhaust heat exchanger 86 which is a gas / gas heat exchanger. A second water-cooled heat exchanger that lowers the temperature by exchanging heat with the exhaust of the cooling tower 50 and also passes relatively low-temperature water that is groundwater after exchanging heat with circulating water when passing through the air duct 75. The temperature is lowered by 87, and when the air whose temperature has been lowered is blown out from the blower port 77, it is blown against the cold wind panel 21 through which circulating water (brine) whose temperature has been lowered by groundwater is blown, and is discharged indoors.

  Therefore, the temperature of the indoor air was lowered by the first water-cooled heat exchanger 85 using the cooling water lowered in temperature by the vaporization heat in the cooling tower 50, and the temperature was lowered by the heat of vaporization by the exhaust heat exchanger 86. Heat exchange with indoor air (exhaust air from cooling tower 50) can reduce the temperature of the indoor air sucked into the intake duct 71, and it can be used indoors without increasing humidity by using the heat of vaporization of the pumped-up groundwater. The temperature of air can be lowered.

  As described above, the cooling device 20 according to the present embodiment reduces the temperature by the heat of vaporization without increasing the humidity of the indoor air, thereby preventing the worker's perceived temperature from increasing and improving the work environment. be able to.

  Further, in the air duct 75, the air in the air duct 75 is cooled by the second water heat exchanger that passes the relatively low temperature ground water after the temperature of the circulating water is lowered, and this cooled air is used for cold air. It is sprayed on the panel 21 to further reduce the temperature and discharge it into the building 10.

  Therefore, the circulating water heated to about 23 ° C. to 25 ° C. by the cold wind panel 21 is sent to the main heat exchanger 31, and the temperature of the circulating water is usually obtained by using the main heat exchanger 31 with ground water of about 15 ° C. to 18 ° C. Is reduced to 20 ° C. or less, and the ground water whose temperature has been raised to about 20 ° C. to 23 ° C. is sent to the cooling tower 50 through the second hydrothermal exchanger as about 25 ° C. to 30 ° C., and the ground water stored in the cooling tower 50 By keeping the temperature of certain cooling water at 30 ° C. or lower, indoor air that becomes 40 ° C. or higher can be lowered to about 25 ° C. or lower.

  And since the air outlet 77 of the air duct 75 is made to approach the cold air panel 21 and is opposed to the cold air panel 21, the air blown out from the air outlet 77 can be dispersed and discharged into the room as gentle air. .

  Furthermore, since the cold wind panel 21 is provided with a plane having high thermal conductivity and the plane is cooled to low temperature by circulating water, the radiant heat from the cold wind panel 21 makes the operator feel cool. Can do.

  As described above, in the cooling device 20, the temperature of the groundwater is increased by exchanging heat with the indoor air, but the main heat exchanger 31 that supplies the cold air to the cold wind panel 21 and the second air duct 75 are provided. Groundwater through the water-cooled heat exchanger 87 is cooled by the vaporization heat in the cooling tower 50 and used as the cooling water to be used in the first water-cooled heat exchanger 85. The temperature of the groundwater depends on the heat exchanger. However, the indoor air can be lowered in temperature by passing through each heat exchanger, and the temperature of the indoor air can be lowered by efficiently exchanging heat.

  In addition, the cooling device 20 uses the sensible heat and vaporization heat of groundwater to lower the indoor air temperature, and thus consumes energy necessary to drive a fan for blowing air and a pump for sending groundwater. The energy consumption required for driving the cooling device 20 can be reduced, and can be assembled by installing ducts, heat exchangers, cooling towers 50, piping for flowing groundwater, and the like. And can be easily and inexpensively installed in the building 10 that requires cooling.

  As shown in FIG. 1, by using the photovoltaic power generation panel 11 and the storage battery 13 as a power supply unit, an energy-saving cooling device 20 that further reduces the consumption of artificial energy such as commercial power can be obtained. Is.

  Furthermore, when the temperature of the circulating water circulated through the cold wind panel 21 reaches 20 ° C. or more, the cooling device 20 shown in FIG. 1 draws up the ground water that has driven the water supply pump 41 to lower the temperature of the circulating water. In addition, although the amount of groundwater pumped can be reduced, if a large amount of groundwater can be pumped, the piping may be changed as shown in FIG.

  In the embodiment shown in FIG. 2, the second pipe 38 connected to the water outlet of the second water-cooled heat exchanger 87 incorporated in the air duct 75 is connected to the water pipe 61 of the cooling tower 50 and incorporated into the intake duct 71. The water outlet of one water-cooled heat exchanger 85 is connected to the discharge pipe 48.

  Therefore, in the second embodiment, when the cooling device 20 is in operation, the feed water pump 41 and the cooling water delivery pump 45 are always driven to pump up the ground water, and the circulating water (brine) is generated by the sensible heat of the low-temperature ground water. The temperature of the groundwater, which was kept near the groundwater temperature and increased in the main heat exchanger 31 and the second water-cooled heat exchanger 87, was partially vaporized through the filler 57 of the cooling tower 50, and the temperature was lowered by the heat of vaporization. Since the cooling water, which is groundwater, is sent to the first water-cooled heat exchanger 85 and then drained, the temperature of the circulating water and the cooling water can be kept at a low temperature close to the groundwater temperature, and indoor cooling can be performed effectively.

  The cooling device 20 shown in FIG. 1 and FIG. 2 is disposed indoors including the cooling tower 50, sucks high temperature air in the building 10 from the air intake 56 of the cooling tower 50, and discharges it outside. However, the cooling tower 50 may be arranged outdoors.

  However, if the cooling tower 50 is disposed indoors, the cooling device 20 can be easily installed only by lengthening the exhaust pipe 65 so that the exhaust port 66 of the cooling tower 50 is disposed outdoors. By discharging the air in the building 10, fresh outside air having a low temperature can be taken into the building 10.

  In addition, when the cooling tower 50 is installed outdoors, the intake duct 71 and the air duct 75 become longer, but the air sucked into the cooling tower 50 is used as outside air, and the temperature of the exhaust and cooling water discharged from the cooling tower 50 is lowered. The temperature decrease rate of the indoor air passing through the intake duct 71 and the air duct 75 by the first water-cooled heat exchanger 85 and the exhaust heat exchanger 86 can be increased.

  Moreover, although the cold wind panel 21 shown in FIG.1 and FIG.2 is supposed to use the said cold wind panel 21 standing, it fixes to the appropriate location in the building 10 with the ventilation port 77 facing upward, and the cold wind panel 21 The cold air panel 21 may be disposed and fixed above the air blowing port 77 so that the cold air panel 21 faces the air blowing port 77.

  1 and 2 are for cooling a large-scale space in a factory or the like provided with a device as a heat generation source 18 in which the interior of the building 10 is heated to a high temperature. The cooling device 20 can be used effectively even in a building 10 that is a facility such as a large-scale agricultural vinyl house where the temperature is about 40 ° C. or higher when the temperature is about 30 ° C. or higher and the temperature is 40 ° C. or higher. .

  When the cooling tower 50 is disposed in the building 10 such as a large vinyl house for agriculture, the ventilation heat exchanger 95 is attached to the ventilation device 91 as shown in FIG. The circulating water supply pipe 32 and the circulating water return pipe 33 are connected so as to be in parallel with the cold wind panel 21.

  Therefore, when the cooling tower 50 is driven to discharge the air in the building 10 from the exhaust pipe 65 of the cooling tower 50 to the outside, the suction fan 93 is driven and the outside air is taken into the building 10 by the ventilation device 91. Circulating water is circulated through the exchanger 95, and the outside air is sucked into the building 10 while the temperature is lowered, so that the temperature rise in the building 10 can be reduced.

  In addition, the number of intake ports 73 of the intake duct 71 is not limited to one, and may be a plurality of intake ports 73. 77 may be provided or may be one.

  Further, the air blowing port 77 is fixed to the cold air panel 21 so as to be opposed to the cold air panel 21 by the fixture 25, but the air blowing port is used without using the fixing device 25 to be fixed to the cold air panel 21. 77 may be fixed at a predetermined location in the building 10, and the cool air panel 21 may be disposed in the immediate vicinity of the air blowing port 77 so that the cold air panel 21 and the air blowing port 77 face each other.

  Further, in the embodiment shown in FIGS. 1 to 3, the discharge end of the intake duct 71 and the suction end of the blower duct 75 are connected via an exhaust heat exchanger 86, but the discharge of the intake duct 71 The cooling end 20 may be simplified by connecting the end directly to the suction end of the air duct 75 and omitting the exhaust heat exchanger 86.

  Also, the second water-cooled heat exchanger 87 shown in FIGS. 2 and 3 is omitted, and the primary pipe outlet of the main heat exchanger 31 is directly connected to the water spray pipe 61 of the cooling tower 50 by the first pipe 37. Alternatively, the third pipe 46 provided with the first water-cooling heat exchanger 85 and the cooling water delivery pump 45 shown in FIGS. 2 and 3 is omitted, and the cooling water sprayed from the sprinkling pipe 61 and stored in the water tank 52 is used. As shown in FIG. 1, the cooling device 20 may be simplified by draining from the discharge pipe 48 having the opening / closing valve 49.

  The cooling device 20 according to the present invention is easy to install, and can effectively reduce the temperature of a large-scale space such as a factory while saving operating expenses.

DESCRIPTION OF SYMBOLS 10 Building 11 Solar power generation panel 13 Storage battery 18 Heat generation source 20 Cooling device 21 Panel for cold air 25 Fixing tool 31 Main heat exchanger 32 Circulating water supply piping 33 Circulating water return piping 35 Circulation pump 37 First piping 38 Second piping 41 Water supply pump 43 Pumping pipe 45 Cooling water delivery pump 46 3rd piping 47 4th piping 48 Discharge pipe 49 Opening and closing valve 50 Cooling tower 51 Bottom 52 Water tank 55 Body wall 56 Air intake port 57 Filling material 59 Float 61 Sprinkling pipe 63 Blower 65 Discharge Cylinder 66 Exhaust port 71 Intake duct 73 Intake port 75 Blower duct 77 Blower port 81 Intake fan 82 First blower fan 83 Second blower fan 85 First water cooling heat exchanger 86 Exhaust heat exchanger 87 Second water cooling heat exchanger 91 Ventilator 93 Suction fan 95 Ventilation heat exchanger

Claims (7)

A panel for cold air equipped with an endothermic pipe for circulating the circulating water;
A main heat exchanger for exchanging heat between the circulating water and groundwater;
A cooling tower for lowering the temperature of the groundwater by spraying the groundwater into the filler;
Having an intake duct and an air duct;
At least one of the intake duct and the air duct has a water-cooled heat exchanger that performs heat exchange between the air in the duct and the groundwater,
The air outlet of the air duct is disposed to face the cold air panel so as to face the plane of the cold air panel, and from the air outlet so that the air discharged from the air outlet is applied to the cold air panel. A cooling device characterized by being delivered.
  The intake duct and the air duct are connected via an exhaust heat exchanger provided in an exhaust pipe of the cooling tower, and heat is generated between the air passing through the intake duct and the air duct and the exhaust from the cooling tower. The cooling apparatus according to claim 1, wherein replacement is performed.   The water-cooled heat exchanger, wherein the water-cooled heat exchanger provided in the air duct is connected to the main heat exchanger and is connected to the cooling tower, and blows groundwater through the main heat exchanger. The cooling device according to claim 1 or 2, wherein the cooling device is sent to the cooling tower through a water-cooled heat exchanger provided in a duct.   The water-cooled heat exchanger, wherein the water-cooled heat exchanger provided in the intake duct is supplied with groundwater stored in the cooling tower and passes through the water-cooled heat exchanger provided in the intake duct. The cooling device according to any one of claims 1 to 3, wherein the cooling device is returned to the cooling tower or discharged to the outside as drainage.   The cooling tower is disposed in a building that forms a space for cooling, an exhaust port of an exhaust pipe of the cooling tower is disposed outside the building, and an intake port of the intake duct is disposed in the space in the building. The cooling device according to any one of claims 1 to 4, wherein the cooling device is disposed above.   6. The cooling device according to claim 1, wherein the air cooling heat exchanger is provided in the intake duct and the water cooling heat exchanger is also provided in the air duct.   A ventilation heat exchanger is attached to a ventilation device of a building where the cooling tower is arranged, and the ventilation heat exchanger is connected to the main heat exchanger in parallel with the cold air panel, and the circulation from the main heat exchanger The cooling device according to any one of claims 1 to 6, wherein water is also circulated through the ventilation heat exchanger so that heat is exchanged between the outside air taken into the building and the circulating water.

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