JP7448325B2 - Air conditioning system, air conditioning method and air conditioning system control method - Google Patents

Description

The present invention relates to air conditioning systems.

Techniques for using well water in air conditioning systems have been disclosed (for example, Patent Documents 1 and 2).

Japanese Patent Application Publication No. 2016-80252 Patent No. 6444747

When heat from well water is used to adjust the temperature of air supplied to a space to be air-conditioned in an air conditioning system, it is thought that energy savings will be achieved because the amount of heat produced will be reduced. However, when attempting to save energy by using well water in an air conditioning system in this way, the benefits of using well water may be reduced during times when the operation of the air conditioning system is slow.

Therefore, it is an object of the present application to provide an air conditioning technology that effectively utilizes well water even during times when the operation of the air conditioning system is slow, thereby realizing further energy savings.

In order to solve the above problems, the present invention utilizes well water pumped from a well and well water pumped from a well and once stored in an air conditioning system.

Specifically, the present invention is an air conditioning system that uses well water, and the air conditioning system uses a first water pump that sends well water from a well and exchanges heat with the well water that is sent by the first water pump. A first air conditioning means that air-conditions the target space, a heat storage tank that stores well water sent by the first water pump, a second water pump that sends the well water stored in the heat storage tank, and a second water pump. This is an air conditioning system that includes a second air conditioning unit that air-conditions a space to be air-conditioned by exchanging heat with well water that is being fed.

In the case of such an air conditioning system, well water is used as a heat medium that exchanges heat with the first air conditioning means and the second air conditioning means. Therefore, the amount of heat produced for heat exchange with the first air conditioning means and the second air conditioning means is reduced, so energy saving is realized.

Furthermore, when well water is stored in the heat storage tank during times when the operation of the air conditioning system is reduced, the well water stored in the heat storage tank absorbs the cold or heat of the surrounding atmosphere. Therefore, when the air-conditioned space is provided in a location close to the heat storage tank, the temperature of the air-conditioned space can be adjusted. Therefore, well water can be used effectively even during times when the operation of the air conditioning system is slow.

Further, the well water stored in the heat storage tank exchanges heat with the second air conditioning means, and the second air conditioning means is used to air condition the space to be air-conditioned. Such an air conditioning system is an efficient system that saves energy and uses well water without wasting it.

Additionally, the amount of water pumped from wells may be regulated to prevent ground subsidence. Therefore, the amount of water pumped from wells may be limited. Therefore, in an air conditioning system that does not include a heat storage tank and uses well water directly delivered from a well to absorb the heat emitted from the air-conditioned space, the well water may not be able to absorb the heat as desired. Possible gender. However, in the case of the above air conditioning system, well water stored in a heat storage tank at night can be used to absorb heat emitted from the air-conditioned space during the day. In other words, the air conditioning system described above can cope with such situations even if a large amount of heat is generated from the air-conditioned space during the day when the amount of well water pumped is regulated. This is a system that can air-condition a space to be air-conditioned as desired.

Further, the first air conditioning means includes a first heat exchanger that exchanges heat between at least a portion of the well water sent by the first water pump and the first heat medium, and a first heat exchanger that exchanges heat with the first heat medium. a first air supply means for supplying air to an air-conditioned space; and a first circulation pump for pressurizing and circulating a first heat medium between the first heat exchanger and the first air supply means. Good too.

According to such an air conditioning system, well water can be used to supply temperature-controlled air to a space to be air-conditioned.

In addition, the first water pump operates in two water feeding modes, the first water feeding mode and the second water feeding mode, and in the first water feeding mode, the outlet temperature of the first heat medium in the first heat exchanger reaches a predetermined temperature. In the second water supply mode, the amount of well water sent may be adjusted so that the amount of water stored in the heat storage tank becomes a predetermined amount.

According to such an air conditioning system, well water can be used in the first water supply mode to supply temperature-controlled air to the air-conditioned space. In the second water supply mode, the degree to which the well water stored in the heat storage tank absorbs the cold or heat of the atmosphere around the heat storage tank can be adjusted depending on the environment.

Further, the first air supply means includes an outside air processing machine that dehumidifies the outside air and supplies the air to the air-conditioned space by exchanging heat between the first heat medium and the outside air, and the first circulation pump The amount of the first heat medium to be circulated to the outside air treatment device may be adjusted based on the enthalpy of the outside air taken in by the outside air treatment device and the state of the exhaust gas discharged from the outside air treatment device after exchanging heat with the outside air taken in. .

According to such an air conditioning system, when the first circulation pump adjusts the amount of the first heat medium so that the latent heat of the outside air can be removed by the outside air treatment machine, the outside air treatment machine supplies dehumidified cold air. You will be noticed. In addition, if the second air conditioning means is an air supply means other than the outside air processing machine and includes an air supply means that removes sensible heat from the air and generates cold air, sensible heat treatment and latent heat treatment when generating cold air. and can be done separately. Further, in such a case, there is no problem even if the temperature of the heat medium used in the air supply means that performs the sensible heat treatment is higher than the temperature of the heat medium of the air supply means that performs the latent heat treatment. In other words, well water pumped directly from a well is used as the cold water that exchanges heat with the heat medium of the air supply means that performs latent heat treatment, and is stored in cold water that exchanges heat with the heat medium of the air supply means that performs sensible heat treatment. It is possible to use hot well water with stored heat. Such an air conditioning system is an efficient system that uses well water without wasting it.

Additionally, as mentioned above, the amount of well water pumped from the well may be limited. The temperature of the well water that is pumped up from such a well and sent as is is lower than the temperature of the well water when the water is stored and heat is stored. However, according to the above-described air conditioning system, such low-temperature well water, which has a limited amount of water, is preferentially used for the outside air treatment machine that performs latent heat treatment. In other words, even if the amount of water pumped from a well is regulated, latent heat treatment can be performed as desired. Therefore, the air-conditioned space can be air-conditioned as desired.

Further, the first air supply means includes a plurality of loads that individually supply air to respective locations within the air-conditioned space, and the second air-conditioning means includes means for uniformly adjusting the entire temperature of the air-conditioned space. May have.

According to such an air conditioning system, it is possible not only to uniformly adjust the temperature of the air-conditioned space, but also to individually adjust the temperature of each location within the air-conditioned space. Moreover, according to such an air conditioning system, the well water pumped up from the well and directly supplied to the first air supply means, which can be individually temperature-controlled, is used. On the other hand, the well water stored in the heat storage tank is used for the second air conditioning means, which has means for uniformly adjusting the temperature of the entire air-conditioned space. In other words, with this type of air conditioning system, the well water that has been stored as heat through heat exchange with the air-conditioned space at night can be used again during the day to uniformly adjust the temperature of the entire air-conditioned space. . Furthermore, it becomes possible to adjust the temperature at each location in order to meet the individual needs of users located at each location in the air-conditioned space. In other words, such an air conditioning system can meet the needs of individual users while being economical.

Additionally, as mentioned above, the amount of well water pumped from the well may be limited. The temperature of the well water that is pumped up from such a well and sent as is is lower than the temperature of the well water when the water is stored and heat is stored. However, according to the above-mentioned air conditioning system, such low-temperature well water, which has a limited amount of water, is used preferentially for the primary air supply means that can individually adjust the temperature of the air-conditioned space. This means that In other words, even if the amount of water pumped from a well is regulated, it is possible to meet the individual demands of users.

Further, the first circulation pump may adjust the amount of the first heat medium to be circulated to the plurality of loads based on the number of the plurality of loads in operation.

According to such an air conditioning system, the amount of circulating first heat medium is wasted.

Moreover, at least some of the plurality of loads may be installed in the attic of the air-conditioned space or on a desk placed in the air-conditioned space, and may supply air to the air-conditioned space.

According to such an air conditioning system, temperature-controlled air is supplied to a user who uses a desk on which a load is installed. Furthermore, if a user is under the ceiling where the load is installed, temperature-controlled air will be supplied to the user. In addition, if there are multiple desks on which loads are installed, or if there are multiple loads installed in the ceiling, each location in the air-conditioned space located in the air supply direction of each load is preferably Temperature regulated. Therefore, if there are users in each location and the users themselves can adjust the temperature of the air supply, the comfort of the users will be improved compared to the case where the air conditioned space is uniformly air-conditioned by one air supply means. do.

In addition, at least some of the plurality of loads installed in the ceiling of the air-conditioned space include a fan coil unit, and the fan coil unit includes a fan that blows air toward the air-conditioned space, and a fan that blows air toward the air-conditioned space, and a A coil is placed on the side of the air-conditioned space, through which the first heat medium passes through to exchange heat with the air blown out from the fan, and a coil is installed between the fan and the coil to block the air blown out from the fan. and a plate-like member having a plate surface arranged thereon.

According to such an air conditioning system, the plate member can absorb the operating sound of the fan. Therefore, the comfort felt by the user in the air-conditioned space is improved. Moreover, the air blown out from the fan hits the plate surface of the plate-shaped member, passes through the side direction of the plate surface, and heads toward the coil. In other words, since the air heading toward the coil is rectified, heat is exchanged uniformly in the coil. That is, the efficiency of heat exchange in the coil is improved.

Further, the second air conditioning means includes a second heat exchanger that exchanges heat between the well water supplied by the second water pump and the second heat medium, and a second heat exchanger that exchanges heat between the second heat exchanger and the second air conditioning means. a second circulation pump that pressure-feeds and circulates the second heat medium; You may adjust the amount of water.

According to such an air conditioning system, when the heat storage tank is provided in a location close to the air-conditioned space, the temperature of the air-conditioned space can be adjusted by storing hot or cold heat emitted from the air-conditioned space. Furthermore, the well water stored in the heat storage tank can be used again for the second air conditioning means. In other words, such an air conditioning system is an efficient system that uses well water without wasting it.

Further, the second air conditioning means may include a heat radiation means that exchanges heat with the second heat medium and radiates heat to the air-conditioned space. According to such an air conditioning system, when the well water stores warm heat in the heat storage tank, the well water whose temperature has increased will exchange heat with the second heat medium in the second heat exchanger. Therefore, the temperature at which the second heat medium flows into the heat radiation means is higher than the temperature at which the first heat medium flows into the first air conditioning means. However, since the heat radiating means removes sensible heat from the air-conditioned space by radiating heat, the air-conditioned space can be cooled using the high-temperature second heat medium. In other words, such an air conditioning system is an efficient system that uses well water without wasting it. Moreover, since such an air conditioning system adjusts the temperature of the air-conditioned space using the heat radiation means in addition to the first air supply means, it is possible to increase the air conditioning effect.

Further, the heat storage tank may be installed under the floor of the air-conditioned space. According to such an air conditioning system, the well water stored in the heat storage tank absorbs hot or cold heat from the air-conditioned space and stores heat therein. Therefore, the temperature of the air-conditioned space can be adjusted. Furthermore, the well water stored in the heat storage tank is used for the second air conditioning means. In other words, such an air conditioning system has a large air conditioning effect and is an efficient system that uses well water without wasting it.

According to the present invention, it is possible to provide an air conditioning technology that effectively utilizes well water even during times when the operation of the air conditioning system is reduced, thereby realizing further energy savings.

FIG. 1 shows an example of an overview of the configuration of an air conditioning system according to an embodiment. FIG. 2 shows an example of an overview of the configuration of the air conditioning system according to the embodiment. FIG. 3 shows an example of an overview of the configuration of the air conditioning system according to the embodiment. FIG. 4 schematically illustrates an example of an overview of the DCFCU. (A) shows an example of a cross-sectional view in the longitudinal direction as an example of the outline of the DCFCU. (B) shows an example of a lateral cross-sectional view as an example of the outline of the DCFCU. FIG. 5 shows an example of variations in the form of holes provided in the face panel. (A) shows an example in which a swirler-shaped member is arranged in the hole. (B) shows an example in which the face panel is made of punched metal. (C) shows an example in which a plurality of circular holes are provided in the face panel. FIG. 6 shows an example of an outline of a desk to which a DCFCU is retrofitted. (A) shows an example of an outline of a top view of the desk. (B) shows an example of an outline of a cross-sectional view of the desk. FIG. 7 shows an overview of the DCFCU according to the first modification. FIG. 8 shows an overview of the DCFCU according to the second modification. FIG. 9 shows an example of an outline of the outside air processing machine. FIG. 10 shows an example of an outline of a radiation panel unit. FIG. 11 shows an example of an outline of the outside air processing machine. FIG. 12 shows an example of an outline of how the air supply means is arranged in the air-conditioned space. FIG. 13 shows an example of an outline of how the air supply means is arranged in the air-conditioned space. FIG. 14 shows an example of an outline of how the air supply means is arranged in the air-conditioned space. FIG. 15 shows an example of an outline of how the air supply means is arranged in the air-conditioned space. FIG. 16 shows an example of a flowchart of the operation of the DCFCU. FIG. 17 shows an example of an outline of the flow of air supply when the DCFCU is operating.

Embodiments of the present invention will be described below. The embodiment shown below is an example of the embodiment of the present invention, and the technical scope of the present invention is not limited to the following aspects.

(System overview)
1 to 3 show an example of a general configuration of an air conditioning system 1 according to this embodiment. Further, in the following description, it is assumed that the air conditioning system 1 supplies cold air to, for example, a plurality of air-conditioned spaces. The air conditioning system 1 includes a plurality of air supply means that supply cold air to the air-conditioned space. As shown in FIG. 1, the air conditioning system 1 includes a well water pump 2 that pumps up well water from a well, and exchanges heat with the cold water used to generate cold air in each air supply means. Well water is used as a heat medium.

Here, the air conditioning system 1 includes, as an example of a plurality of air supply means, a DC fan coil unit (hereinafter referred to as DCFCU) 20 that is installed in the ceiling of the air-conditioned space and supplies cold air to the air-conditioned space. Be prepared. Here, the DCFCU 20 air-conditions the entire air-conditioned space to a uniform temperature. Further, the air conditioning system 1 includes, as an example of a plurality of air supply means, a desk 30 that is arranged within the air-conditioned space and to which a DCFCU 20A of the same type as the DCFCU 20 is retrofitted. Furthermore, as an example of multiple air supply means, the air conditioning system 1 is installed in the ceiling of the air-conditioned space, supplies cold air individually to each location in the air-conditioned space, and supplies cold air to each location in the air-conditioned space. It is equipped with DCFCU 20B (same type as DCFCU 20) that adjusts the temperature for each location. The air conditioning system 1 also includes a radiation panel unit 40, which is installed in the ceiling of the air-conditioned space and radiates heat toward the air-conditioned space, as an example of a plurality of air supply means. The air conditioning system 1 also includes an outside air processing machine 60 and an outside air processing machine 80, which suck in outside air and supply cold air to an air-conditioned space, as an example of a plurality of air supply means.

(Explanation of each air supply means)
<DCFCU20>
FIG. 4 schematically illustrates an example of the outline of the DCFCU 20. FIG. 4A shows an example of a longitudinal cross-sectional view as an example of the outline of the DCFCU 20. FIG. FIG. 4(B) shows an example of a cross-sectional view in the lateral direction as an example of the outline of the DCFCU 20. FIG. As shown in FIG. 4, the DCFCU 20 includes a fan 201 that sucks in and blows out air. Here, the fan 201 is a DC fan whose blades are driven by DC current. Further, the fan 201 blows out air laterally with respect to the direction toward the air-conditioned space. Two fans 201 are arranged side by side in the longitudinal direction.

The DCFCU 20 also includes a coil 203 on the side of the air-conditioned space when viewed from the fan 201 with a predetermined space between the coil 203 and the fan 201 . Well water passes through the inside of the coil 203, as shown in FIG. 4(A). The coil 203 exchanges heat with the air blown out from the fan and removes sensible heat contained in the blown air. In other words, the coil 203 is a dry coil. Further, a predetermined space between the fan 201 and the coil 203 is defined as an upper chamber 209 .

The DCFCU 20 also includes a baffle plate 202 in the upper chamber 209. The baffle plate 202 is installed with respect to the outlet of each fan 201 so that its plate surface faces the fan 201. In other words, the air blown out from the fan 201 is rectified by the baffle plate 202 and directed toward the coil 203.

The DCFCU 20 also includes a face panel 204 with a predetermined space left on the side of the air-conditioned space when viewed from the coil 203 . The face panel 204 is provided with a hole 205 through which cold air exchanges heat with the coil 203 and passes through the gap between the members forming the coil 203 when heading toward the air-conditioned space. Further, a predetermined space between the coil 203 and the face panel 204 is defined as a lower chamber 213.

FIG. 5 shows an example of a variation in the form of the hole 205 provided in the face panel 204. FIG. 5(A) shows an example in which a plurality of wing-shaped members 214 are arranged in a swirling manner in the hole 205, and cool air is blown out from gaps between the swirling wing-shaped members 214. FIG. 5(B) shows an example in which the face panel 204 is made of punched metal. FIG. 5C shows an example in which the face panel 204 is provided with a plurality of circular holes. When the hole 205 has the form shown in FIG. 5(A), the air blown out from the hole 205 is sent to the air-conditioned space in a swirling manner, so the draft felt by people in the air-conditioned space is suppressed. be done. Therefore, the comfort felt by people in the air-conditioned space is improved. Further, when the hole 205 has a configuration as shown in FIG. 5(B), cool air is uniformly supplied from the entire surface of the face panel 204. Moreover, when the hole 205 has a form as shown in FIG. 5(C), a large amount of cold air can be supplied to the air-conditioned space.

Further, as shown in FIG. 4, the DCFCU 20 includes a claw 206 that hooks the face panel 204 onto the main body of the DCFCU 20. The DCFCU 20 also includes an open catch 207 that is installed on the main body of the DCFCU 20 and fixes the face panel 204 to the main body of the DCFCU 20 . The open catch 207 is equipped with a magnet that attaches and fixes the face panel 204, and when the part where the magnet is installed is pushed toward the ceiling and then the hand is released from the part, the part pops out toward the air-conditioned space. It has a mechanism. In other words, the user pushes the part of the face panel 204 where the open catch 207 is provided from the side of the air-conditioned space toward the ceiling, and then releases his/her hand from the part, so that the part moves from the ceiling to the side of the air-conditioned space. The face panel 204 can be separated from the open catch 207 by opening it slightly, inserting your hand into the opened gap, and pulling it toward the air-conditioned space. Thereafter, the user can easily remove the face panel 204 from the installation location by removing the claws 206 from the main body of the DCFCU 20. The DCFCU 20 also includes a fall prevention wire 208 that connects the ceiling and the face panel 204 and prevents the face panel 204 from falling into the air-conditioned space. In other words, the face panel 204 can be easily replaced.

Further, the DCFCU 20 includes a substrate 210. A control chip 211 that is electrically connected to the fan 201 and controls the operation of the fan 201 is mounted on the mounting surface of the board 210 . Further, the mounting surface of the board 210 is provided with a wireless module 212 that can perform wireless communication with an external terminal.

<Desk 30>
FIG. 6 shows an example of an outline of the desk 30 to which the DCFCU 20A is retrofitted. FIG. 6(A) shows an example of an outline of a top view of the desk 30. FIG. 6(B) shows an example of an outline of a cross-sectional view of the desk 30.

As shown in FIG. 6, the DCFCU 20A is retrofitted to the back surface of the top plate 31 of the desk 30. The DCFCU 20A includes a duct 302. The duct 302 is provided with a hole through which a screw passes, and the duct 302 is fixed by engaging the screw passing through the hole with a hole provided at a predetermined position on the back surface of the top plate 31 of the desk 30. Ru.

Further, the DCFCU 20A includes two fans 303. As shown in FIG. 6, the duct 302 includes a housing section 304 that houses the fan 303. The fans 303 are installed side by side in the horizontal direction of the desk 30 so that air is blown out toward the back surface of the top plate 31. Further, the fan 303 may be a so-called DC fan in which blades provided in the fan 303 are rotated by applying a direct current to a motor provided inside the fan 303, for example.

Further, the DCFCU 20A includes a suction port 341 in the housing portion 304 that sucks air from the outside when the fan 303 operates. The suction port 341 is provided in the housing section 304 below the fan 303. Furthermore, when the DCFCU 20A is retrofitted to the back surface of the top plate 31 of the desk 30, the suction port 341 will be located on the side of the curtain plate 32 of the desk 30. By providing the suction port 341 and the fan 303 in this manner, the housing portion 304 can be made thinner while having a simple structure. Further, by arranging the fans 303 in the horizontal direction, the thickness of the housing section 304 can be reduced, but the amount of air blown out can be increased.

Further, the DCFCU 20A includes a coil 307. The coil 307 has a plate shape and is formed from a flow tube member 371 that meanders in a plane. Furthermore, an inlet 373 through which cold water flows is provided at the end of the flow tube member 371 forming the lower part of the coil 307 (the portion located near the bottom surface of the accommodating portion 304 in FIG. 6(B)). Furthermore, an outlet 374 is provided at the end of the flow tube member 371 forming the upper part of the coil 307, through which the cold water that has passed through the flow tube member 371 flows out. That is, the cold water and the air blown out from the fan 303 exchange heat via the flow tube member 371. Further, the coil 307 is placed on its back so that the outer surface 372 of the planar meandering flow tube member 371 faces the direction in which the fan 303 is installed. In other words, the coil 307 is not installed vertically with respect to a horizontal surface in order to exchange heat with the air blown out from the fan 303. Therefore, the housing portion 304 is made thinner.

Further, the duct 302 of the DCFCU 20A includes a rectangular conduit 305 through which the air blown out from the fan 303 and passed through the gap between the flow tube members 371 of the coil 307 is directed toward the seated person. Here, the accommodating portion 304 and the conduit 305 are in communication. Further, the bottom of the conduit 305 is provided in a stepped manner toward the back surface of the top plate 31 of the desk 30 with respect to the bottom surface of the storage section 304 . Further, the duct 302 includes an inclined surface 306 at the step portion.

Further, the DCFCU 20A includes a blowing face 319 at the lower part of the tip of the desk 30 on the side of the conduit 305 where the seated person is seated. The blowing face 319 includes an air supply port 320 in which a plurality of small holes are arranged horizontally. The blown air that has passed through the pipe 305 is supplied to the seated person via the air supply port 320. Here, the blowing face 319 is installed in an inclined state with respect to the horizontal plane, and the air blown out from the air supply port 320 travels diagonally upward toward the upper body of the seated person.

Further, the DCFCU 20A includes a substrate 310. A fan 3 is mounted on the mounting surface of the board 310.
A control chip 311 that is electrically connected to the fan 303 and controls the operation of the fan 303 is mounted. Further, the mounting surface of the board 310 is provided with a wireless module 312 that can perform wireless communication with an external terminal.

Regarding the dimensions of each part of the duct 302, the length of the conduit 305 in the depth direction as seen from the seated person is, for example, about 380 mm. Further, the thickness of the conduit 305 is, for example, about 20 mm. Further, the total length of the accommodating portion 304 and the step portion where the accommodating portion 304 and the conduit 305 communicate in the depth direction as seen from the seated person is, for example, about 270 mm. Further, the thickness of the accommodating portion 304 is, for example, about 80 mm. Further, the length in the vertical direction of the air supply port 320 provided on the blow-off face 319 is, for example, about 5 mm.

Further, FIG. 7 shows a DCFCU 20AA according to a modification. As shown in FIG. 7, the DCFCU 20AA is a device that does not include the conduit 305 and has a reduced depth dimension of, for example, about 300 mm (thickness is, for example, about 80 mm like the DCFCU 20A). According to such a DCFCU 20AA, when retrofitted to the desk 30A having the reinforcing material 33 on the back surface of the top plate 31, the DCFCU 20AA can avoid the reinforcing material 33.

In addition, the DCFCU 20AA includes an air supply port 320A in which a plurality of small holes are lined up horizontally, similar to the air supply port 320, on the upper side of the seating side of the accommodating portion 304A. That is, the air that has passed through the gap between the flow tube members 371A of the coil 307A is supplied to the seated person via the air supply port 320A (details will be described later). Moreover, the air blown out from the air supply port 320A travels diagonally upward toward the upper body of the seated person.

Further, the DCFCU 20AA includes a guide 321 inside the housing section 304A and near the air supply port 320A. The guide 321 guides the air that has passed through the gap between the flow tube members 371A of the coil 307A to the air supply port 320A. Further, although not shown, the guide 321 is provided with a rotating portion at a connecting portion with the storage portion 304A, and is installed so as to be rotatable about the horizontal direction of the desk 30A as a rotation axis. That is, in the DCFCU 20AA, by changing the direction of the guide 321, the direction and amount of air that has passed through the gap between the flow pipe members 371A of the coil 307A flowing into the air supply port 320A is adjusted. Therefore, the direction and amount of air blown out from the air supply port 320A are also adjusted. Further, the DCFCU 20AA includes an inclined surface 306A on the side surface of the seating portion 304A.

Such a DCFCU 20AA can have the same effects as the DCFCU 20A shown in FIG. 6 (described later). In addition, even if the desk 30A includes the reinforcing material 33, it can be easily installed on the desk 30A without changing the dimensions of the conduit 305 so as to avoid the reinforcing material 33. Further, according to the DCFCU 20AA, since the inclined surface 306A is provided on the side surface of the seating portion 304A on the seating side, when the seated person is seated, a part of the seated person's body may be exposed. is suppressed from contacting the accommodating portion 304A of the DCFCU 20AA. In other words, such DCFCU 20AA can provide comfort to the seated person.

Moreover, according to such DCFCU20AA, by rotating the guide 321, the direction and amount of air blown out from the air supply port 320A are adjusted. In other words, such a DCFCU 20AA is a device that can flexibly respond to the needs of the seated person, such as the direction of air supply, the amount of air supply, and the part of the body that is hit by the supplied air.

Moreover, FIG. 8 shows an example of an outline of the DCFCU 20AB according to another modification. FIG. 8(A) shows an example of an outline of a cross-sectional view of the DCFCU 20AB. FIG. 8(B) shows an example of a perspective view of the DCFCU 20AB. As shown in FIG. 8, DCFCU20A
B is retrofitted to desk 30A. In other words, the reinforcing material 33 is located in the middle of the pipe line 305B of the DCFCU 20AB. In the conduit 305B of the DCFCU 20AB that is retrofitted to the desk 30A, the portion that covers the reinforcing material 33 is formed by a flexible joint 308 made of cloth.

According to the DCFCU 20AB as described above, it is possible to achieve the same effects as those of the DCFCU 20A shown in FIG. 6 (described later). In addition, while maintaining the thinness of the conduit 305B, the noise generated when the blades of the fan 303B rotate is absorbed by the flexible joint. Therefore, leakage of the noise to the outside is reduced. Therefore, when the seated person is seated, the degree to which the seated person feels the noise from the fan 303B is reduced. Therefore, the seated person is prevented from feeling uncomfortable due to the noise. Further, since the flexible joint has cushioning properties, even if a part of the seated person's body comes into contact with it, the seated person is less likely to feel uncomfortable. In other words, the DCFCU 20AB as described above can provide comfort to the seated person.

<Outside air processing machine 60>
FIG. 9 shows an example of an outline of the outside air processing machine 60. As shown in FIG. 9, the outside air processing device 60 includes a total heat exchanger 601 that exchanges heat between outside air and exhaust gas from an air-conditioned space and dehumidifies the outside air. The outside air processing device 60 also includes a heat exchanger 603 that exchanges heat with the outside air that has passed through the total heat exchanger 601 and heats the outside air. Here, hot water is supplied to the inside of the coil forming the heat exchanger 603. The outside air processing device 60 also includes a heat exchanger 604 that exchanges heat with the indoor air sucked in from the air-conditioned space and cools the indoor air. Here, cold water that has undergone heat exchange with well water is supplied to the inside of the coil forming the heat exchanger 604. The outside air processing device 60 also includes a rotor 602 that exchanges heat between outside air that has passed through a heat exchanger 603 and has been heated, and indoor air that has passed through a heat exchanger 604 and has been cooled. As the outside air passes through the rotor 602, sensible heat is removed and the outside air is cooled. Furthermore, the portion of the rotor 602 whose temperature has increased by removing sensible heat from the outside air is rotated to a flow path through which indoor air passes. The heated portion then passes through the heat exchanger 604 and is cooled by the cooled indoor air. The part is then rotated again into the flow path through which outside air passes, removing sensible heat from the outside air. The outside air processing device 60 as described above is a device that removes sensible heat and latent heat from outside air.

The outside air processing machine 60 also includes a total heat exchanger 606 that exchanges heat between the outside air that has passed through the rotor 602 and has been cooled, and the indoor air that has not passed through the heat exchanger 604. The outside air processing device 60 also includes a fan 605 that blows outside air that has passed through the total heat exchanger 606 into the air-conditioned space. In other words, the outside air is dehumidified and cooled by the outside air processing device 60 before being supplied to the air-conditioned space. The outside air treatment machine 60 also includes a heat exchanger 608 that cools the heated indoor air that passes through the rotor 602. Here, the coil forming the heat exchanger 608 is supplied with cold water that has undergone heat exchange with well water. The outside air processing device 60 also includes a fan 607 that discharges the indoor air that has passed through the heat exchanger 608 toward the total heat exchanger 601 . In other words, cooled indoor air flows into the total heat exchanger 601.

<Radiation panel unit 40>
FIG. 10 shows an example of an outline of the radiation panel unit 40. The radiation panel unit 40 is provided in the ceiling of the air-conditioned space. The radiation panel unit 40 includes a flat coil 401 and a main pipe 402 through which cold water that has undergone heat exchange with well water passes. Three flat coils 401 are arranged in series in the direction of the plate surface. The radiation panel unit 40 includes a pipe 403 that branches from the main pipe 402 and supplies cold water to the three flat coils 401 . Further, the piping 403 connects the terminal end of the flow tube forming one coil 401 and the tip of the flow tube forming the other coil 401 so that the flow tubes forming each coil 401 are arranged in series. Although not shown, the pipe 403 is provided with a valve that adjusts the amount of cold water flowing inside the pipe 403. Furthermore, a radiation panel 404 that radiates heat is attached to each coil 401 in the form of a flat plate. That is, the radiation panel 404 radiates cold heat in a cooled state by exchanging heat with the coil 401. Here, the radiation panel unit 40 is an example of the "heat radiation means" of the present invention.

<Outside air processing machine 80>
FIG. 11 shows an example of an outline of the outside air processing machine 80. As shown in FIG. 11, the outside air processing device 80 includes a total heat exchanger 801 that exchanges heat between outside air and exhaust gas from an air-conditioned space and dehumidifies the outside air. The outside air processing device 80 also includes a heat exchanger 802 that exchanges heat with the outside air that has passed through the total heat exchanger 801 and cools the outside air. Here, cold water is supplied to the inside of the coil forming the heat exchanger 802. The outside air processing device 80 also includes a heat exchanger 803 that exchanges heat with the outside air that has passed through the heat exchanger 802 and reheats the outside air. Here, hot water is supplied inside the coil forming the heat exchanger 803. The outside air processing device 80 also includes a fan 804 that blows outside air that has passed through the heat exchanger 803 into the air-conditioned space. The outside air processing device 80 also includes a fan 805 that exhausts the indoor air that has passed through the total heat exchanger 801. That is, in the outside air processing device 80, sensible heat and latent heat are removed from the outside air.

(Overall system configuration)
<Air supply means that directly uses well water pumped from a well>
Next, an example of a general configuration of the air conditioning system 1 formed from each of the above-mentioned air supply means will be shown. The air conditioning system 1 includes a pumping water tank 3. The pumping water tank 3 temporarily stores the well water pumped up by the well water pump 2. Further, the well water pump 2 adjusts the amount of well water pumped from the well according to the water level of the pumping water tank 3.

The air conditioning system 1 also includes a well water supply pump 4. The well water supply pump 4 supplies the well water stored in the pumping water tank 3. Here, the well water supply pump 4 adjusts the amount of well water sent according to the setting mode.

The air conditioning system 1 also includes a heat exchanger 5. At least a portion of the well water fed from the well water supply pump 4 flows into the primary side of the heat exchanger 5 . The air conditioning system 1 also includes a valve 6 that adjusts the amount of well water sent from the well water supply pump 4 to the heat exchanger 5 . Here, the heat exchanger 5 is an example of the "first heat exchanger" of the present invention.

On the other hand, on the secondary side of the heat exchanger 5, cold water flows between the heat exchanger 5 and the coil 203B of the DCFCU 20B, which is a fan coil unit of the same type as the DCFCU 20 and is installed in the ceiling of the air-conditioned space. Circulation piping is provided for circulation. That is, in the heat exchanger 5, the well water directly supplied from the well and the cold water that exchanges heat with the air to generate cold air in the DCFCU 20B exchange heat. Here, the cold water flowing through the circulation piping on the secondary side of the heat exchanger 5 is an example of the "first heat medium" of the present invention.

Further, on the secondary side of the heat exchanger 5, a circulation pipe through which cold water circulates between the heat exchanger 5 and a flow tube member 371 forming the coil 307 of the DCFCU 20A retrofitted to the desk 30 is provided. That is, in the heat exchanger 5, the well water directly supplied from the well and the cold water that exchanges heat with the air to generate cold air in the DCFCU 20A exchange heat.

Further, on the secondary side of the heat exchanger 5, a circulation pipe through which cold water circulates between the heat exchanger 5 and the heat exchangers 604 and 608 provided in the outside air treatment machine 60 is provided. That is, in the heat exchanger 5, the well water directly supplied from the well and the cold water flowing through the heat exchangers 604 and 608 of the outside air treatment device 60 exchange heat.

The air conditioning system 1 also includes, on the secondary side of the heat exchanger 5, cold water flowing through the coil 203B of the DCFCU 20B, cold water flowing through the coil 307 of the DCFCU 20A retrofitted to the desk 30, and a heat exchanger provided in the outside air processing machine 60. A direct supply system secondary pump 21 is provided to send the cold water flowing through 604 and 608 to the secondary side of the heat exchanger 5.

The air conditioning system 1 also includes air-cooled chillers 70A and 70B, and a heat exchanger 22. The heat exchanger 22 further heat-exchanges the water that is sent from the direct supply system secondary pump 21 to the heat exchanger 5 and that has been heat-exchanged in the heat exchanger 5 . Chilled water supplied to the primary side of the heat exchanger 5 is generated by air-cooled chillers 70A and 70B. The air conditioning system 1 also transfers water on the secondary side that has been heat exchanged in the heat exchanger 22 to the coil 203B of the DCFCU 20B, the coil 307 of the DCFCU 20A retrofitted to the desk 30, and the heat exchanger provided in the outside air processing machine 60. 604 and 608 are provided. Further, the DCFCU 20B, the desk 30 (DCFCU 20A), the outside air processing machine 60, the direct supply system secondary pump 21, and the pump 23 are examples of the "first air conditioning means" of the present invention. Further, the DCFCU 20B, the desk 30 (DCFCU 20A), and the outside air processing machine 60 are examples of the "first air supply means" of the present invention. Moreover, the air-cooled chillers 70A and 70B are an example of the "cold/hot water supply device" of the present invention.

<Air supply means that uses well water that has been stored and heat stored>
The air conditioning system 1 also includes a water tank 10. The water tank 10 is provided, for example, under the floor of an air-conditioned space. At least a portion of the well water supplied from the well water supply pump 4 flows into the water tank 10 and is stored therein. The water tank 10 includes a heat storage tank 11 that stores well water in order to store heat for a predetermined period of time, and a return water tank 12 that stores well water in order to return the well water to the return well. Here, the well water supplied from the well water supply pump 4 will flow into the heat storage tank 11. The well water stored in the heat storage tank 11 absorbs heat from the surrounding atmosphere and the return water tank 12 and stores the heat. The air conditioning system 1 also includes a valve 8 for adjusting the inflow amount. Further, the well water flowing into the return water tank 12 is sent from the well water supply pump 4 to the heat exchanger 5, and the well water that has been heat exchanged with the water on the secondary side in the heat exchanger 5 flows into the water return tank 12. Here, the air conditioning system 1 includes a valve 7 that adjusts the amount of well water flowing from the heat exchanger 5 into the return water tank 12.

The air conditioning system 1 also includes a well water heat storage pump 13 that pumps up well water whose heat has been stored in the heat storage tank 11 and sends the water. The air conditioning system 1 also includes a heat exchanger 14 into which well water sent from the well water heat storage pump 13 flows. Here, well water fed from the well water heat storage pump 13 flows into the primary side of the heat exchanger 14 . Here, the heat exchanger 14 is an example of the "second heat exchanger" of the present invention.

The air conditioning system 1 also includes a valve 15 that adjusts the amount of well water that returns from the heat exchanger 14 to the return water tank 12 on the primary side of the heat exchanger 14 . The air conditioning system 1 also adjusts the amount of well water that returns to the water return tank 12 that is pumped up by the well water heat storage pump 13 and mixed with the well water that flows from the heat storage tank 11 to the primary side of the heat exchanger 14. A valve 16 is provided.

On the other hand, on the secondary side of the heat exchanger 14, a circulation pipe through which cold water circulates between the heat exchanger 14 and the main pipe 402 of the radiation panel unit 40 provided in the ceiling of the air-conditioned space is provided. That is, in the heat exchanger 14, the well water stored in the heat storage tank 11 and the cold water that cools the radiant panel 404 of the radiant panel unit 40 exchange heat. Here, the cold water flowing through the circulation pipe on the secondary side of the heat exchanger 14 is an example of the "second heat medium" of the present invention.

Further, on the secondary side of the heat exchanger 14, a circulation pipe is provided in which cold water circulates between the heat exchanger 14 and the coil 203 of the DCFCU 20 provided in the ceiling of the air-conditioned space. That is, in the heat exchanger 14, the well water stored in the heat storage tank 11 and the cold water that exchanges heat with the air to generate cold air in the DCFCU 20 exchange heat.

Further, on the secondary side of the heat exchanger 14, a circulation pipe is provided in which cold water circulates between the heat exchanger 802 of the outside air processing device 80 that supplies air to the air-conditioned space and the heat exchanger 14. That is, in the heat exchanger 14, the well water stored in the heat storage tank 11 and the cold water that is heat-exchanged with the outside air to generate cold air in the heat exchanger 802 of the outside air processing device 80 exchange heat. become.

In addition, the air conditioning system 1 is arranged such that the above-mentioned radiant panel unit 40, DCFCU 20, and outside air treatment machine 80 are arranged in parallel, and the cold water flowing out from the secondary side of the heat exchanger 14 is supplied to each device. . Moreover, the air conditioning system 1 includes an outside air processing machine 50 downstream of the above-mentioned radiation panel unit 40, DCFCU 20, and outside air processing machine 80. The outside air treatment machine 50 may be, for example, an outside air treatment machine manufactured by PMAC. Here, the outside air treatment machine 50 includes a heat exchanger (not shown), and cold water flows into the coil of the heat exchanger. Then, the cold water exchanges heat with the outside air in the heat exchanger, thereby cooling the outside air. Here, in the outside air processing device 50, sensible heat is removed from outside air. The cooled outside air is then supplied to the air-conditioned space. Here, the outside air treatment machine 50 is an example of "a load that further exchanges heat with the second heat medium that has exchanged heat with the heat radiating means" of the present invention.

The air conditioning system 1 also includes a heat storage secondary pump 41. The heat storage system secondary pump 41 exchanges heat with air on the secondary side of the heat exchanger 14 to generate cold air in the radiant panel unit 40, DCFCU 20, or outside air processing machine 80, and further generates cold air in the outside air processing machine 50. The cold water that has undergone heat exchange with air is sent to the secondary side of the heat exchanger 14 in order to generate the heat exchanger.

The air conditioning system 1 also includes a heat exchanger 42. The heat exchanger 42 further heat-exchanges the water that is sent from the heat storage system secondary pump 41 to the heat exchanger 14 and that has been heat-exchanged in the heat exchanger 14 . Chilled water supplied to the primary side of the heat exchanger 42 is generated by air-cooled chillers 70A and 70B. The air conditioning system 1 also includes a pump 43 that returns water on the secondary side that has been heat exchanged in the heat exchanger 42 to the radiant panel unit 40, the DCFCU 20, and the outside air processor 80. Further, the DCFCU 20, the radiation panel unit 40, the outside air processing device 50, the outside air processing device 80, the heat storage system secondary pump 41, and the pump 43 are examples of the "second air conditioning means" of the present invention.

The air conditioning system 1 also includes a well water return pump 17. The well water return pump 17 sends the well water stored in the heat storage tank 11 to the return well, so that drainage of the water tank 10 is completed by the time when the well water is stored in the heat storage tank 11 and heat storage starts. Adjust the starting water level of the water tank 10 so that

<Other component devices>
Further, the air conditioning system 1 includes outside air processing machines 80A and 80B of the same type as the outside air processing machine 80. The outside air processing machine 80A, for example, is installed in an air-conditioned space different from the air-conditioned space in which the above-mentioned air supply means is installed. The different air-conditioned spaces may be, for example, a kitchen. Then, the outside air processing machine 80A supplies air at a desired temperature and humidity to the kitchen. Further, the outside air processing machine 80B is installed, for example, in another air-conditioned space on a different floor from the above-mentioned air-conditioned space, and supplies air with a desired temperature and humidity. Further, cold water generated in air-cooled chillers 70A and 70B is supplied to heat exchangers 802A and 802B provided in outside air processing machines 80A and 80B, respectively.

The air conditioning system 1 also includes a hot water storage tank 90 and a heat exchanger 91. Hot water is stored in the hot water storage tank 90 , and the stored hot water is supplied to the primary side of the heat exchanger 91 . On the other hand, on the secondary side of the heat exchanger 91, heat exchangers 803A and 803A, which are provided in the outside air processing machines 80A and 80B, respectively.
A circulation pipe for circulating hot water between 03B and the heat exchanger 91 is provided. That is, in the heat exchanger 91, the hot water stored in the hot water storage tank 90 and the hot water that exchanges heat with the outside air to generate warm air in the heat exchangers 803A and 803B of the outside air processing machines 80A and 80B exchange heat. become.

Further, on the secondary side of the heat exchanger 91, a circulation pipe through which hot water circulates between the heat exchanger 603 provided in the outside air treatment machine 60 and the heat exchanger 91 is provided. That is, in the heat exchanger 91, the hot water stored in the hot water tank 90 and the hot water exchanged with the outside air in order to heat the outside air in the heat exchanger 603 of the outside air processing device 60 exchange heat.

The air conditioning system 1 also includes a hot water secondary pump 94. The hot water secondary pump 94 performs heat exchange on the secondary side of the heat exchanger 91 in heat exchangers 803A and 803B provided in the outside air treatment machines 80A and 80B, respectively, and in a heat exchanger 603 provided in the outside air treatment machine 60, respectively. The heated water is sent to the secondary side of the heat exchanger 91.

The air conditioning system 1 also transfers water on the secondary side that has been heat exchanged in the heat exchanger 91 to heat exchangers 803A and 803B provided in the outdoor air processing machines 80A and 80B, respectively, and heat exchangers provided in the outdoor air processing machine 60. A pump 95 for returning the water to the container 603 is provided.

The air conditioning system 1 also includes generators 92A and 92B. Water on the primary side that has undergone heat exchange in the heat exchanger 91 flows into the generators 92A and 92B. The air conditioning system 1 also includes generator exhaust heat circulation pumps 93A and 93B that send primary side water that has undergone heat exchange in the heat exchanger 91 to generators 92A and 92B. The water flowing into the generators 92A and 92B absorbs the exhaust heat from the generators and is heated. The heated water is then sent to the hot water storage tank 90. The air conditioning system 1 also includes a primary dryer 100. The generator waste heat circulation pumps 93A and 93B can be adjusted so as to send at least a portion of the water on the primary side that has undergone heat exchange in the heat exchanger 91 to the primary dryer 100.

The air conditioning system 1 also includes a steam boiler 96, a heat exchanger 97, and a water return tank 98. Steam generated in the steam boiler 96 is supplied to the primary side of the heat exchanger 97 . The steam heat exchanged in the heat exchanger 97 becomes water, which is stored in a water return tank 98 and then returned to the steam boiler 96. The air conditioning system 1 also includes a secondary pump 99 on the secondary side of the heat exchanger 97 that causes the water on the primary side that has been heat exchanged in the heat exchanger 91 to flow into the heat exchanger 97 .

(Example of arrangement of each air supply means)
12 to 15 show an example of an outline of how each of the above air supply means is arranged in the air-conditioned space. In the air-conditioned space shown in FIG. 12, the outside air processing device 60 is arranged near the air-conditioned space. The cold air generated in the outside air processing device 60 is then supplied from the side of the air-conditioned space toward the air-conditioned space. Furthermore, in the air-conditioned space shown in FIG. 12, two DCFCUs 20 are arranged at the corners of the ceiling. The cold air generated in the DCFCU 20 is then supplied to the air-conditioned space. Here, the air direction, air volume, etc. of the air supplied from the DCFCU 20 are adjusted so that the entire temperature of the air-conditioned space is uniform. Further, a water tank 10 is installed under the floor of the air-conditioned space shown in FIG.

In the air-conditioned space shown in FIG. 13, a plurality of DCFCUs 20B are arranged in the ceiling. The cold air generated in the DCFCU 20B is then separately supplied from the ceiling of the air-conditioned space to each location in the air-conditioned space. Further, in the air-conditioned space shown in FIG. 13, a plurality of desks 30 are arranged. The cool air generated in the DCFCU 20A retrofitted to the desk 30 is supplied to each seated person. Furthermore, in the air-conditioned space shown in FIG. 13, the outside air processing device 80 is arranged near the air-conditioned space. The cold air generated in the outside air processing device 80 is then supplied from the ceiling of the air-conditioned space to the air-conditioned space.

In the air-conditioned space shown in FIG. 14, a radiation panel unit 40 is arranged on the ceiling. Then, the cooled radiation panel 404 radiates heat toward the air-conditioned space. Further, in the air-conditioned space shown in FIG. 14, a plurality of desks 30 are arranged. The cool air generated in the DCFCU 20A retrofitted to the desk 30 is supplied to each seated person. Furthermore, in the air-conditioned space shown in FIG. 14, the outside air processing device 80 is arranged near the air-conditioned space. The cold air generated in the outside air processing device 80 is then supplied from the ceiling of the air-conditioned space to the air-conditioned space.

In the air-conditioned space shown in FIG. 15, a plurality of desks 30 are arranged. The cool air generated in the DCFCU 20A retrofitted to the desk 30 is supplied to each seated person. Furthermore, in the air-conditioned space shown in FIG. 15, the outside air processing device 80 is arranged near the air-conditioned space. The cold air generated in the outside air processing device 80 is then supplied from the ceiling of the air-conditioned space to the air-conditioned space. Furthermore, in the air-conditioned space shown in FIG. 15, the outside air processing device 50 is arranged near the air-conditioned space. The cold air generated in the outside air processing device 50 is then supplied from the ceiling of the air-conditioned space to the air-conditioned space.

(Example of daytime operation)
<Well water supply pump 4>
Next, an example of the operation of the air conditioning system 1 will be explained. The air conditioning system 1 has two operating modes, for example, a daytime mode and a nighttime mode. In the daytime mode, the amount of well water pumped from the well and sent from the well water supply pump 4 to the primary side of the heat exchanger 5 is, for example, the outlet temperature A on the secondary side of the heat exchanger 5. The amount of well water sent to the heat exchanger 5 is adjusted so that the temperature (FIG. 1) is a set value (for example, about 17 degrees). Therefore, the well water fed from the well water supply pump 4 to the primary side of the heat exchanger 5 is, for example, 500 L/min. Further, the primary side inlet temperature of the well water heat exchanger 5 to be fed is, for example, about 16 degrees, and the primary side outlet temperature of the well water heat exchanger 5 is, for example, about 23 degrees. Further, during the day, it is assumed that the valve 6 provided in the pipe through which the well water supplied from the well water supply pump 4 to the heat exchanger 5 passes is open. On the other hand, it is assumed that the valve 8 provided in the pipe through which the well water passes from the well water supply pump 4 to the heat storage tank 11 is closed. Further, the well water supply pump 4 is an example of the "first water pump" of the present invention. Moreover, the daytime mode is an example of the "first water supply mode" of the present invention.

<Direct supply system secondary pump 21>
In the daytime mode, the direct supply system secondary pump 21 disposed on the secondary side of the heat exchanger circulates cold water between the heat exchanger 5 and the air supply means on the secondary side of the heat exchanger 5. The amount of water is set as follows. That is, for example, the amount of cold water circulated between the heat exchanger 5 and the heat exchangers 604 and 608 of the outside air processing machine 60 is equal to the outside air enthalpy and the outlet air C of the total heat exchanger 601 (Fig. ) is set based on the state of Moreover, the amount of cold water circulated between the heat exchanger 5 and each coil 203B forming the DCFCU 20B is set based on the number of operating DCFCUs 20B. Further, the amount of cold water circulated between the heat exchanger 5 and the coil 307 of the DCFCU 20A retrofitted to the desk 30 is set based on the number of desks 30. The total amount of cold water set in this manner is, for example, 500 L/min. Further, the secondary side inlet temperature of the cold water heat exchanger 5 is, for example, about 24 degrees. Further, the direct supply system secondary pump 21 is an example of the "first circulation pump" of the present invention.

<Outside air processing machine 60>
The cold water cooled in the heat exchanger 5 is further heat exchanged with the cold water generated in the chillers 70A and 70B in the heat exchanger 22, and is cooled. Then, it is supplied to the heat exchanger 604 and the heat exchanger 608 of the outside air processing device 60 at a temperature of about 17 degrees, for example. Then, in the outside air processing device 60, latent heat is removed from the outside air. Then, the dehumidified and cooled outside air is supplied to the air-conditioned space shown in FIG. 12.

Furthermore, the outside air processing device 60 is capable of supplying a constant amount of cold air to the air-conditioned space. Furthermore, the outside air processing device 60 can change the air volume in stages depending on the usage status of the air-conditioned space. Furthermore, the supply air temperature can be adjusted by adjusting the amount of cold water flowing through heat exchanger 604 and heat exchanger 608 and the amount of hot water flowing through heat exchanger 603. Further, the outside air processing device 60 can reset the settings according to the indoor temperature of the air-conditioned space. Furthermore, the outside air treatment device 60 can also adjust the supply air dew point temperature by adjusting the amount of cold water flowing through the heat exchanger 604 and the heat exchanger 608 and the amount of hot water flowing through the heat exchanger 603.

<DCFCU20B>
Further, the cold water cooled on the secondary side of the heat exchanger 5, which is further heat-exchanged with the cold water generated in the chillers 70A and 70B in the heat exchanger 22, is cooled by the coil forming the DCFCU 20B. It is also supplied to 203B. Here, the DCFCU 20B is a fan coil unit of the same type as the DCFCU 20 shown in FIG. 4. In other words, air blown out from the fan 201 is rectified by the baffle plate 202 and directed toward the coil 203 through which the cold water passes. The blown air is cooled as it passes through the surface of the coil 203. Then, the cold air passes through the gap between the members forming the coil 203 and is supplied to the air-conditioned space through the hole 205 provided in the face panel 204. Here, the DCFCU 20B individually supplies cold air to each of the air-conditioned spaces (FIG. 13).

<DCFCU20A retrofitted to desk 30>
The cold water that is cooled on the secondary side of the heat exchanger 5 and further heat-exchanged with the cold water generated in the chillers 70A and 70B in the heat exchanger 22 and cooled is sent to the coil 307 that forms the DCFCU 20A that is retrofitted to the desk 30. It is also supplied to Here, FIG. 16 shows an example of a flowchart of the operation of the DCFCU 20A. Moreover, FIG. 17 shows an example of an outline of the flow of air supply when the DCFCU 20A is operating.

As shown in FIG. 16, in step S101, the wireless module 312 receives an operation request signal requesting the operation of the DCFCU 20A from a terminal such as a smartphone owned by the seated person (S101). Then, in step S102, the wireless module 312 transfers the operation request signal to the control chip 311 (S102).

Then, in step S103, the control chip 311 generates a control signal to rotate the blades of the fan 303 according to the operation request signal. Therefore, the blades of the fan 303 will rotate. As the blades of the fan 303 rotate, air is sucked into the fan 303 from the leg space of the seated person through the suction port 341. Then, as shown in FIG. 17, air is blown out from the outlet 309 of the fan 303 in the direction toward which the seated person is seated (S103). Here, cold water cooled on the secondary side of the heat exchanger 5 passes through the flow tube member 371 of the coil 307 . Here, the cold water flows into the flow tube member 371 from an inlet 373 provided at an end of the flow tube member 371 forming the lower part of the coil 307 . The air then flows into the flow tube member 371 forming the upper part of the coil 307 while exchanging heat with the air blown out from the fan 303 . The cold water then flows out from an outlet 374 provided at the end of the flow tube member 371 forming the upper part of the coil 307. In other words, the temperature of the cold water flowing inside the flow tube member 371 forming the lower part of the coil 307 is low, and the temperature of the cold water increases as it goes above the coil 307.

Here, at least a portion of the air blown from the fan 303 hits the back surface of the top plate 31 and then travels along the outer surface 372 of the coil 307. Therefore, the blown air uniformly exchanges heat with the coil 307 and is cooled. Further, since the space in the direction of movement of the blown air is gradually blocked by the outer surface 372, the flow of the blown air becomes smooth. Therefore, the pressure loss of the blown air is suppressed. Moreover, the cooled blown air passes through the gaps between the flow tube members 371.

Then, the blown air that has passed through the gap between the flow tube members 371 reaches the stepped portion where the storage portion 304 and the pipe line 305 communicate with each other. Here, an inclined surface 306 is provided at the stepped portion. Therefore, the blown air that has reached the stepped portion naturally advances into the pipe line 305 along the inclined surface 306 without waste. Thereafter, the blown air passes through the pipe 305 and is supplied to the seated person in the air-conditioned space shown in FIGS. 13 to 15 via the air supply port 320. Here, the DCFCU 20A may include a rectifying member such as a louver in the air supply port 320, and adjust the air supply from the air supply port 320 to concentrate on a specific region such as the neck of the seated person.

Here, the DCFCU 20A is remotely controlled from a terminal such as a smartphone owned by the seated person, but the DCFCU 20B installed in the ceiling is also remotely controlled from a terminal such as a smartphone owned by the seated person, similar to the DCFCU 20A. You can.

<Well water heat storage pump 13>
By the way, the air conditioning system 1 not only uses the well water by directly sending it to the heat exchanger 5 using the well water supply pump 4, but also temporarily stores the well water in the water tank 10 and uses the well water whose temperature has increased due to heat storage. Make use of it. In addition, the amount of well water that the well water heat storage pump 13 pumps up from the heat storage tank 11 and sends to the primary side of the heat exchanger 14 is determined by, for example, the outlet temperature B on the secondary side of the heat exchanger 14 (FIG. 1). is adjusted to a set value (for example, about 19 degrees). Further, when the outlet temperature on the secondary side of the heat exchanger 14 is such a set temperature, the well water sent from the well water heat storage pump 13 to the primary side of the heat exchanger 14 is, for example, 330 L/min. . In such a case, the primary side inlet temperature of the well water heat exchanger 14 to be fed is, for example, about 18 degrees, and the primary side outlet temperature of the well water heat exchanger 14 is, for example, about 21 degrees. Here, the well water heat storage pump 13 is an example of the "second water pump" of the present invention.

<Secondary heat storage pump 41>
The amount of cold water that the heat storage system secondary pump 41 circulates between the heat exchanger 14 and the air supply means on the secondary side of the heat exchanger 14 is set as follows. That is, for example, a flow rate of 60% (for example, 108 L/min) of the minimum flow rate of cold water (for example, 180 L/min) required for the outside air treatment machine 50 to operate, and a cold water required for the outside air treatment machine 80 to operate. The sum of the minimum flow rate of . Then, variable flow rate control of the circulation flow rate is performed based on the control valve of the main pipe 402 of the radiation panel unit 40 and the number of DCFCUs 20 in operation. Therefore, the amount of cold water that the heat storage system secondary pump 41 circulates between the heat exchanger 14 and the air supply means on the secondary side of the heat exchanger 14 is, for example, 380 L/min. Further, the secondary side inlet temperature of the cold water heat exchanger 14 is, for example, about 22 degrees. Here, the heat storage system secondary pump 41 is an example of the "second circulation pump" of the present invention.

<Radiation panel unit 40>
At least a portion of the cold water cooled on the secondary side of the heat exchanger 14 is further cooled by exchanging heat with the cold water generated in the chillers 70A and 70B in the heat exchanger 42. The cold water is then supplied to the main pipe 402 included in the radiation panel unit 40 at a temperature of about 19 degrees, for example. The cold water is supplied to a pipe 403 branched from the main pipe 402.
Flows into the inside of the coil 401 via. Therefore, the radiation panel 404 attached to the coil 401 is cooled by exchanging heat with the coil 401. Cold heat is then radiated from the cooled radiation panel 404 to the air-conditioned space. Here, in the radiation panel unit 40, the temperature of the radiation panel 404 is adjusted, for example, between 19 degrees and 24 degrees by controlling the opening degree of a valve provided in the pipe 403 at intervals.

<DCFCU20>
The cold water cooled on the secondary side of the heat exchanger 14 is further heat exchanged with the cold water generated in the chillers 70A and 70B in the heat exchanger 42, and is cooled. The cold water is then supplied to the coil 203 forming the DCFCU 20 at a temperature of about 19 degrees, for example. The cold air is then supplied to the air-conditioned space shown in FIG.

<Outside air processing machine 80>
The cold water cooled on the secondary side of the heat exchanger 14 is further heat exchanged with the cold water generated in the chillers 70A and 70B in the heat exchanger 42, and is cooled. The cold water is then supplied to the inside of the coil of the heat exchanger 802 provided in the outside air treatment device 80 at a temperature of about 19 degrees, for example. That is, the outside air passing through the heat exchanger 802 is cooled and supplied to the air-conditioned space (FIGS. 13 to 15) by the fan 804.

Furthermore, the outside air processing device 80 is capable of supplying a constant amount of cold air to the space to be air-conditioned. Furthermore, the supply air temperature can be adjusted by adjusting the amount of cold water flowing through the heat exchanger 802 and the amount of hot water flowing through the heat exchanger 803. Moreover, the outside air processing device 80 can reset the settings according to the indoor temperature of the air-conditioned space. Furthermore, the outside air treatment device 80 can also adjust the supply air dew point temperature by adjusting the amount of cold water flowing through the heat exchanger 802 and the amount of hot water flowing through the heat exchanger 803.

<Outside air processing machine 50>
In the above-described radiant panel unit 40, the cold water flowing inside the coil 401 that has exchanged heat with the radiant panel 404 has a temperature of about 22 degrees to 23 degrees, for example, and flows out of the coil 401. Then, the cold water flowing out from the radiant panel unit 40 is supplied to the inside of the coil of the heat exchanger provided in the outside air treatment machine 50. Therefore, the outside air sucked into the outside air processing device 50 is cooled when passing through the heat exchanger, and is supplied to the air-conditioned space shown in FIG. 15.

<Other equipment>
The air-cooled chillers 70A and 70B also supply the generated cold water to the heat exchangers 802A and 802B of the outside air treatment machines 80A and 80B. Here, the amount of cold water supplied from the air-cooled chillers 70A, 70B to the heat exchangers 802A, 802B is determined based on the enthalpy of the outside air taken in by the outside air processing machines 80A, 80B. In addition, the outside air processing machine 80B may be placed in each of a plurality of air-conditioned spaces, and in this case, while the overall air supply amount of the outside air processing machine 80B is constant, the air-conditioned space may vary depending on the usage status of each air-conditioned space. The air supply amount may be varied for each space.

In addition, the generator exhaust heat circulation pumps 93A and 93B operate so that the temperature D (FIG. 3) of the water that is exchanged with heat on the primary side of the heat exchanger 91 and returned to the generators 92A and 92B is 55 degrees or less. do. When the outlet temperature E (FIG. 2) on the primary side of the heat exchanger 91 tends to rise, a portion of the water returning to the generators 92A and 92B is sent to the primary dryer 100.

Further, the steam boiler 96 is operated when the generators 92A and 92B are not operating due to maintenance work or failure, for example. Steam generated in the steam boiler 96 is supplied to the primary side of the heat exchanger 97 via a pressure reducing device (a pressure reducing valve or a steam power generation device). Then, the steam undergoes heat exchange in the heat exchanger 97 to become water, which flows out from the outlet on the primary side.
The water that has flowed out is then returned to the water return tank 98. Here, the amount of steam output from the steam boiler 96 is changed depending on the number of generators 92A and 92B in operation. The secondary pump 99 is controlled at a constant flow rate so that the return temperature F (FIG. 3) of water on the primary side that has undergone heat exchange in the heat exchanger 91 and returns to the heat exchanger 97 is 55 degrees or less. Then, a portion of the returning water may be sent to the primary dryer 100.

Further, a starting water level at which the well water return pump 17 is started is set in the water tank 10 . The starting water level is set, for example, to a water level at which drainage of the well water stored in the water tank 10 is completed before the well water is stored in the heat storage tank 11 and heat storage is started.

Although not shown, the air conditioning system 1 may include a VAV (Variable Air Volume) unit. The VAV unit may calculate the number of people in each air-conditioned space by collecting position information from smartphones owned by the people in each air-conditioned space. Then, the VAV setting value may be changed depending on the number of people in each room. Further, in the air-conditioned space in which the outside air processing machine 60 and the DCFCU 20 are provided, the total amount of air supplied to the space may be changed depending on an event held in the space.

(Example of nighttime operation)
<Well water supply pump 4>
In the night mode, the valve 6 provided in the pipe through which the well water supplied from the well water supply pump 4 to the heat exchanger 5 passes is closed. On the other hand, the valve 8 provided in the pipe through which the well water passes from the well water supply pump 4 to the heat storage tank 11 is opened. The well water supply pump 4 then sends the well water toward the heat storage tank 11 until the set amount of well water is stored in the heat storage tank 11 . Here, the amount of well water stored in the heat storage tank 11 may be determined, for example, based on the next day's weather (temperature, humidity forecast, etc.). Here, the heat storage tank 11 is installed under the floor of the air-conditioned space, as shown in FIG. Therefore, the well water stored in the heat storage tank 11 absorbs heat from the air-conditioned space at night. In other words, the air-conditioned space shown in FIG. 12 is cooled by the well water stored in the heat storage tank 11 at least at night. Further, the night mode is an example of the "second water supply mode" of the present invention.

<Effect>
According to the air conditioning system 1 described above, the well water supply pump 4 supplies well water to the primary side of the heat exchanger 5, and the well water cools the water flowing into the secondary side of the heat exchanger 5. It is used to. That is, the well water is used to generate cold air by using the water that has flowed into the secondary side of the heat exchanger 5 as a heat medium. Therefore, according to the air conditioning system 1 as described above, the cold water and heat used by the DCFCU 20B, the desk 30 (DCFCU 20A), and the outside air processing machine 60 arranged on the secondary side of the heat exchanger 5 to generate cold air. The amount of heat produced for exchange is saved. Therefore, energy saving is achieved.

Furthermore, according to the air conditioning system 1 described above, well water is stored in the water tank 10 at night when the operation of the air conditioning system 1 is reduced. The water tank 10 is installed under the floor of the air-conditioned space, as shown in FIG. Therefore, the well water stored in the water tank 10 can absorb and store the heat contained in the air-conditioned space. Therefore, the temperature of the air-conditioned space can be adjusted. Therefore, well water can be used effectively even at night when the operation of the air conditioning system is slow.

Further, the well water stored in the water tank 10 is supplied to the primary side of the heat exchanger 14 and is used to cool the water flowing into the secondary side of the heat exchanger 14. That is, the well water is used to generate cold air by using the water that has flowed into the secondary side of the heat exchanger 14 as a heat medium. Such an air conditioning system is an efficient system that saves energy and uses well water without wasting it.

Additionally, the amount of water pumped from wells may be regulated to prevent ground subsidence. In such a case, the amount of well water pumped by the well water pump 2 is limited. Therefore, in an air conditioning system that does not include the water tank 10 and uses well water directly delivered from a well to absorb the heat emitted from the air-conditioned space, there is a possibility that the well water will not be able to absorb the heat as desired. is possible. However, according to the air conditioning system 1 as described above, well water stored in the water tank 10 at night is supplied to the primary side of the heat exchanger 14 during the day, and flows into the secondary side of the heat exchanger 14. It is used to cool water. In other words, according to the air conditioning system 1 described above, even if a large amount of heat is generated from the air-conditioned space during the day, if the amount of well water pumped is regulated, This is a system that can air-condition the space to be air-conditioned as desired.

Further, as described above, the amount of well water pumped by the well water pump 2 may be limited. The temperature of the well water that is pumped up from such a well and sent as is is lower than the temperature of the well water when the water is stored in the heat storage tank 11 and heat is stored therein. However, according to the air conditioning system 1 described above, well water with a limited amount of water at low temperature is processed by an outside air treatment device 60 that performs latent heat treatment, a DCFCU 20B that individually supplies cold air to the air-conditioned space, and a desk. 30 (DCFCU 20A) is used more preferentially than for the DCFCU 20, the radiation panel unit 40, and the outside air processing machine 80, which uniformly adjust the temperature of the air-conditioned space. In other words, according to the air conditioning system 1 described above, even if the amount of water pumped from a well is regulated, latent heat treatment can be performed as desired, and the air-conditioned space can be air-conditioned as desired. Can be done. Furthermore, it is possible to meet the needs of individual users.

The well water supplied to the primary side of the heat exchanger 14 is water that has stored warm heat in the water tank 10. Therefore, the well water whose temperature has increased exchanges heat with the water flowing into the secondary side in the heat exchanger 14. Therefore, the temperature (about 19 degrees) at which the water flowing into the secondary side exchanges heat with well water in the heat exchanger 14 and flows into the radiant panel unit 40, DCFCU 20, outside air treatment machine 50, and outside air treatment machine 80 is as follows. The temperature at which water that has exchanged heat with well water in the heat exchanger 5 flows into the DCFCU 20B, the desk 30 (DCFCU 20A), and the outside air treatment machine 60 (about 17 degrees)
That's all. However, since the radiation panel unit 40 removes sensible heat from the air-conditioned space by radiating heat, such high-temperature water can be used to cool the air-conditioned space. Also, in the DCFCU 20, the high temperature water can be used to remove sensible heat from the air-conditioned space. In other words, such an air conditioning system is an efficient system that uses well water without wasting it. In addition, such an air conditioning system includes, in addition to the DCFCU 20B, desk 30 (DCFCU 20A), and outside air treatment machine 60 that use well water directly, the radiant panel unit 40, DCFCU 20, and outside air treatment machine that use stored well water. 50 and the outside air processing device 80 also adjust the temperature of the air-conditioned space, so the air-conditioning effect can be increased.

Further, according to the air conditioning system 1 described above, the well water supply pump 4 is configured to operate the heat exchanger so that the outlet temperature A on the secondary side of the heat exchanger 5 becomes a set value (for example, about 17 degrees) in the daytime mode. The amount of well water sent to No. 5 is adjusted. Therefore, the DCFCU 20B, the desk 30 (DCFCU 20A), and the outside air processing machine 60 arranged on the secondary side of the heat exchanger 5 circulate the water used to generate cold air to the heat exchanger 5. You can get cold water of about 100 degrees. Therefore, the DCFCU 20B, the desk 30 (DCFCU 20A), and the outside air processing machine 60 arranged on the secondary side of the heat exchanger 5 can generate cold air to be supplied to the air-conditioned space.

Further, according to the above air conditioning system 1, the direct supply system secondary pump 21 and the heat exchanger 5,
The amount of cold water that is circulated between the outside air processing device 60 and the outside air treatment device 60 is set based on the outside air enthalpy and the state of the outlet air C (FIG. 9) of the total heat exchanger 601. Therefore, in the outside air treatment device 60, the direct supply system secondary pump 21 can supply cold water at a temperature that allows latent heat to be removed from the outside air. Therefore, in the air-conditioned space shown in FIG. 12, the sensible heat of the air-conditioned space is removed by the DCFCU 20, and the latent heat of the air-conditioned space is removed by the outside air processor 60.

Further, according to the above air conditioning system 1, well water pumped directly from a well is used for cold water that exchanges heat with the heat medium of the air supply means that performs latent heat treatment such as the outside air treatment machine 60, and separate from latent heat treatment. High-temperature well water stored in the water tank 10 and stored in heat is used as the cold water that exchanges heat with the heat medium of the air supply means that performs sensible heat treatment such as the radiant panel unit 40. Such an air conditioning system 1 is an efficient system that uses well water without wasting it.

In addition, according to the above air conditioning system 1, the DCFCU 20B and the desk 30 (DCFCU 20A), which individually supply cold air to each location in the air-conditioned space and each seated person, are equipped with air pumped directly from a well. Well water is used. On the other hand, the DCFCU 20 and the radiation panel unit 40, which uniformly adjust the temperature of the air-conditioned space, use well water that has been pumped up from a well and temporarily stored in the heat storage tank 11. That is, according to the air conditioning system 1 as described above, the well water that has been stored as heat by exchanging heat with the air-conditioned space at night is reused during the day, thereby making the temperature of the air-conditioning space uniform. Furthermore, in order to meet the individual demands of users located at each location within the air-conditioned space, it is possible to adjust the temperature at each location using well water pumped up from the well and delivered directly. In other words, the air conditioning system 1 as described above is an economical air conditioning system that can meet the demands of individual users.

Moreover, according to the air conditioning system as described above, the cold water flowing into the outside air treatment machine 50 is the cold water that has passed through the radiation panel unit 40, the DCFCU 20, or the outside air treatment machine 80. That is, in the outside air processing device 50, the cold water used to generate cold air in another device is reused to generate cold air. Therefore, such an air conditioning system is an efficient system that uses cold water without wasting it. Furthermore, the outside air processing device 50 increases the air conditioning effect of the air-conditioned space.

Furthermore, according to the air conditioning system 1 described above, four DCFCUs 20B are provided in the air-conditioned space in FIG. 13. The amount of cold water that the direct supply system secondary pump 21 circulates between the heat exchanger 5 and the DCFCU 20B is set based on the number of operating DCFCUs 20B. Therefore, according to the above-mentioned air conditioning system 1, air can be supplied from the DCFCU 20B to each location in the air-conditioned space, and the amount of circulating cold water is reduced.

Further, according to the above air conditioning system 1, as shown in FIGS. 13 to 15, temperature-controlled cool air is supplied to the user who uses the desk 30 on which the DCFCU 20A is installed. Furthermore, as shown in FIG. 13, since a plurality of DCFCUs 20B are installed in the ceiling of the air-conditioned space, suitable cool air with controlled temperature can be supplied to each user in the air-conditioned space. become. In other words, the temperature of each location within the air-conditioned space is appropriately controlled. In addition, when there are multiple users in an air-conditioned space and the users themselves can adjust the supply air temperature, the user's comfort level is lower than when the air-conditioned space is uniformly air-conditioned by a single air supply means. Sexuality improves.

Further, in the DCFCU 20 forming the air conditioning system 1 described above, the baffle plate 202 absorbs the operating sound of the fan 201. Therefore, the comfort felt by the user in the air-conditioned space is improved. Moreover, the air blown out from the fan 201 hits the plate surface of the baffle plate 202 , passes through the side direction of the plate surface, and heads toward the coil 203 . In other words, since the air heading toward the coil 203 is rectified, heat is exchanged uniformly with the air in the coil 203. That is, the efficiency of heat exchange in the coil 203 is improved.

Further, according to the above air conditioning system 1, even if the water on the secondary side that exchanges heat with well water is not adjusted to the desired temperature in the heat exchanger 5 or the heat exchanger 14, the water Since the water is heat exchanged with the cold and hot water supplied from the chillers 70A and 70B, the temperature can be adjusted to a desired temperature. Therefore, such an air conditioning system 1 is designed to prevent fluctuations in the temperature of cold water flowing out from the secondary side of the heat exchanger 5 or the secondary side of the heat exchanger 14 and supplied to each air supply means forming the air conditioning system 1. can be suppressed. Therefore, fluctuations in the temperature of the cold air generated by each air supply means are suppressed. Therefore, cool air with suppressed temperature fluctuations is supplied to the air-conditioned space, and the comfort felt by the user in the air-conditioned space is maintained.

Further, according to the air conditioning system 1 described above, the well water supply pump 4 regulates the amount of well water sent to the water tank 10. Therefore, the well water stored in the water tank 10 absorbs heat from the surroundings of the water tank 10 (for example, the air-conditioned space shown in FIG. 12), and the degree of heat storage can be adjusted depending on the environment.

Further, since the fan 201 used in the DCFCU 20 forming the air conditioning system 1 described above is a fan operated by direct current, energy saving is realized. Further, the coil 203 used in the DCFCU 20 is a dry coil that removes sensible heat from the blown air. Therefore, since the surface of the coil 203 is dry, dust and the like are prevented from adhering to the surface. Therefore, the DCFCU 20 does not need to include a filter closer to the air-conditioned space than the coil 203. That is, the DCFCU 20 has a structure in which the face panel 204 is opened and each component can be easily replaced from the side of the air-conditioned space.

Further, according to the DCFCU 20A retrofitted to the desk 30 as described above, even if the specifications of the DCFCU 20A or the desk 30 are changed after the DCFCU 20A is retrofitted to the desk 30, the DCFCU 20A and the desk 30 can be fixed. The DCFCU 20A can be removed from the desk 30 by removing the screws. Then, the DCFCU 20A whose specifications have been changed can be easily fixed to the desk 30 again. In other words, the DCFCU 20A as described above can easily accommodate changes in specifications.

Moreover, since the DCFCU 20A as described above is formed from the fan 303 and the coil 307, it has a simple structure. Therefore, the weight of the DCFCU 20A is reduced, and the layout of the DCFCU 20A can be easily changed. Moreover, according to the DCFCU 20A as described above, it can be removed from the desk 30 and maintenance can be easily performed. In other words, the DCFCU 20A as described above is easy to handle.

Further, according to the above DCFCU 20A, since it is retrofitted to the back surface of the top plate 31 of the desk 30, the desk 30 does not need to have a space to accommodate the DCFCU 20A, and the degree of freedom in selecting the desk 30 is improved. do. Moreover, according to the DCFCU 20A as described above, since it is retrofitted to the back surface of the top plate 31 of the desk 30, there is no need to customize the parts forming the DCFCU 20A to match the desk 30. Therefore, initial costs are suppressed.

Further, according to the DCFCU 20A as described above, the fan 303 is installed on the back side when viewed from the seated person. Therefore, the degree to which the seated person feels the operating sound of the fan 303 is reduced. Further, a location on the back side when viewed from the seated person is a location where the legs of the seated person are less likely to come into contact with each other when the seated person is seated, compared to a location on the near side of the seated person. Therefore, even if the size of the fan 303 provided at the location is increased, when the seated person is seated, the legs of the seated person are prevented from hitting the lower surface of the accommodating portion 304 that accommodates the fan 303. . In other words, by installing the large-sized fan 303, the output of the fan 303 is suppressed, and the operating noise of the fan 303 is reduced.

Further, according to the DCFCU 20A as described above, the space in which the air blown from the fan 303 advances toward the seating side of the seated person is narrowed in the direction of travel by the outer surface 372 of the coil 307. Therefore, the blown air flows smoothly through the space and uniformly exchanges heat with the coil 307. Therefore, a decrease in the efficiency of heat exchange between the blown air and the coil 307 is suppressed, and furthermore, pressure loss of the blown air is suppressed.

Further, according to the DCFCU 20A as described above, the outer surface 372 of the coil 307 is provided on the back so as to face the direction in which the fan 303 is installed, so the dimension of the coil 307 in the height direction is suppressed. Therefore, the housing portion 304 of the DCFCU 20A can be made thinner.

Further, according to the DCFCU 20A as described above, since the pipe line 305 has a rectangular shape, the pipe line 305 can be made thinner while ensuring a passage area for the blown air. Therefore, while the cool air is suitably supplied to the seated person, the legs of the seated person are prevented from coming into contact with the conduit 305 and causing discomfort to the seated person. In addition, since an inclined surface 306 is attached to the level difference in the communication portion between the storage section 304 and the pipe line 305, the blown air that has passed through the gap between the flow tube members 371 of the coil 307 is directed to the inclined surface 306. The seat will naturally advance along the seat to the seated side of the seated person without waste. Therefore, when the blown air enters the conduit 305 from the storage section 304, pressure loss due to hitting the step is suppressed.

Further, the cross-sectional size of the conduit 305 is smaller than the cross-sectional size of the accommodating portion 304 in the direction from the place where the fan 303 is installed to the seating side of the seated person. Therefore, the flow velocity of the air blown out from the air outlet 309 of the fan 303 increases when it enters the pipe line 305. Therefore, air is supplied with suitable force toward the seated person from the air supply port 320 at the end of the conduit 305 on the side where the seated person is seated.

Further, according to the desk 30 equipped with the DCFCU 20A as described above, air is sucked into the fan 303 from the leg space of the seated person (space below the top plate), and temperature-controlled air is blown out to the seated person. . Therefore, when warm air has accumulated in the leg space of the seated person, the warm air can be removed and cool air can be supplied to the seated person. In other words, the desk 30 including the DCFCU 20A as described above can provide comfort to the seated person.

<Other variations>
In the above embodiment, the first air conditioning means is formed by the DCFCU 20B, the desk 30 (DCFCU 20A), the outside air processing machine 60, the direct supply system secondary pump 21, and the pump 23; The shape is not limited to this, but it may be formed so that the space to be air-conditioned can be air-conditioned by exchanging heat with at least a portion of the well water fed by the well water supply pump 4. Further, in the above embodiment, the second air conditioning means is also described as being formed by the DCFCU 20, the radiation panel unit 40, the outside air treatment device 50, the outside air treatment device 80, the heat storage system secondary pump 41, and the pump 43. However, it is not limited to such a formation example, and the space to be air-conditioned may be air-conditioned by storing water in the water tank 10 and storing heat, and exchanging heat with well water sent by the well water heat storage pump 13. It is sufficient if it is formed.

In addition, the water flowing inside the flow pipe member 371 of the DCFCU 20A installed in the desk 30 arranged in the air-conditioned space as shown in FIG. Heat may be exchanged with high-temperature well water that has been stored and stored heat. This is because the radiation panel unit 40 is installed in the air-conditioned space as shown in FIG. 14, and the air-conditioned space is uniformly cooled by the radiation panel unit 40. Therefore, even if the well water stored in the heat storage tank 11 is used for the DCFCU 20A, the air conditioning effect can be maintained, which has a higher temperature than the well water directly delivered from the well.

Moreover, although the above-mentioned embodiment showed an example in which the well water supply pump 4 operates in two modes, the operation modes are not limited to two. In the above embodiment, in the daytime mode, the amount of well water flowing into the primary side of the heat exchanger 5 is such that the outlet temperature of the cold water on the secondary side of the heat exchanger 5 becomes a predetermined temperature. Although an example has been shown in which the amount of well water is adjusted, the adjustment of the amount of well water flowing into the primary side of the heat exchanger 5 is not limited to this example. Similarly, the well water heat storage pump 13 controls the amount of well water to be sent to the primary side of the heat exchanger 14 so that the outlet temperature of the cold water on the secondary side of the heat exchanger 14 becomes a predetermined temperature. However, the adjustment of the amount of well water flowing into the primary side of the heat exchanger 14 is not limited to this example. Further, in the embodiment described above, an example is shown in which the outside air that has been dehumidified and cooled by the outside air processing device 60 is supplied to the air-conditioned space as cold air, but the air conditioning system 1 does not need to include the outside air processing device 60.

Further, in the above embodiment, a plurality of DCFCUs 20B and desks 30 (DCFCUs 20A) are provided in the air-conditioned space, but there is no limit to the number of devices provided. Further, the DCFCU 20B and the desk 30 (DCFCU 20A) may not be provided. Furthermore, although the amount of cold water that the direct supply system secondary pump 21 circulates between the heat exchanger 5 and the DCFCU 20B is set based on the number of operating DCFCUs 20B, the amount of cold water is not based on the number of operating units. You can. Further, although the DCFCU 20, the radiation panel unit 40, the outside air processing machine 50, and the outside air processing machine 80 have been mentioned as an example of the second air conditioning means of the present invention, the second air conditioning means uniformly controls the entire temperature of the air-conditioned space. Instead of adjusting the temperature, it may be possible to individually adjust the temperature of each location in the air-conditioned space.

Furthermore, the locations where the respective devices that supply cold air to the air-conditioned space are arranged are not limited to the attic of the air-conditioned space, the desks arranged in the air-conditioned space, and the like. Further, the radiation panel unit may be provided in a plurality of air-conditioned spaces, or the radiation panel unit itself may not be provided.

Further, the outside air processing device 50 may not be provided downstream of the radiation panel unit 40, the DCFCU 20, and the outside air processing device 80. Further, the chillers 70A and 70B may not be provided. That is, heat exchange with the cold water used for each air supply means may not be performed in the heat exchangers 22 and 42 to which cold and hot water is supplied from the chiller. Furthermore, the location where the water tank 10 is installed is not limited to under the floor of the air-conditioned space.

Further, in the above embodiment, an example was shown in which each air supply means supplies cold air to the air-conditioned space, but each air supply means may also supply warm air to the air-conditioned space. Then, in each air supply means, the heat medium flowing into the heat exchanger that generates warm air exchanges heat with the well water, thereby heating the heat medium. Further, the well water in the water tank 10 may absorb cold heat from the air-conditioned space and store heat therein.

Further, in the above embodiment, the fan 303 is installed so that the air blown out faces the back surface of the top plate 31. Then, the flow tube member 371 is placed on its back so that the outer surface 372 faces the direction in which the fan 303 is installed. However, the air outlet 309 of the fan 303 does not need to face the back surface of the top plate 31. Further, the outer surface 372 does not have to be provided on the back so as to face the direction in which the fan 303 is installed. For example, the air outlet 309 of the fan 303 is provided facing the side of the desk top 31, and the outer surface 372 of the coil 307
may be provided at a predetermined angle so as to narrow the space in the traveling direction of the blown air blown out from the fan 303 when viewed from the fan 303 .

Further, in the above embodiment, the bottom of the conduit 305 is provided in a stepped manner in the direction of the back surface of the top plate 31 of the desk 30 with respect to the bottom surface of the accommodating portion 304, but the stepped portion is not provided. Tomoyoshi. Moreover, when the stepped portion is provided, the inclined surface 306 may not be provided in the stepped portion.

Further, in the above embodiment, an example was shown in which the DCFCU 20A is retrofitted to the desk 30 used by a seated person, but the DCFCU 20A may be retrofitted to a desk used by a user while standing. .

Although an example of a preferred embodiment of the present invention has been described above, the present invention is not limited to the illustrated embodiment. It is clear that those skilled in the art can come up with various changes or modifications within the scope of the idea described in the claims, and these naturally fall within the technical scope of the present invention. It is understood that Furthermore, the embodiments and modifications disclosed above can be combined.

1. Air conditioning system: 2. Well water pump: 3. Pumping tank: 4. Well water supply pump: 5. Heat exchanger: 6. Valve: 7. Valve: 8. Valve: 10.. Water tank: 11.. Heat storage tank: 12.. Return water tank: 13.. Well water heat storage pump: 14.. Heat exchanger: 15.. Valve: 16.. Valve: 17.. Well water return water. Pump: 21... Secondary pump for supply system: 22... Heat exchanger: 23... Pump: 30... Desk: 31... Top plate: 32... Curtain plate: 40... Radiation panel unit: 41... Heat storage system secondary pump: 42... Heat exchanger: 43... Pump: 50... Outside air processing machine: 60... Outside air processing machine: 70A, 70B... Chiller: 80, 80A, 80B... Outside air processing machine: 90... Hot water tank: 91... Heat exchanger: 92A, 92B... Generator: 93A, 93B... Generator exhaust heat circulation pump: 94... Hot water secondary pump: 95... Pump: 96... Steam Boiler: 97... Heat exchanger: 98... Return water tank: 99... Secondary pump: 100... Primary dryer: 201... Fan: 202... Baffle plate: 203, 203B... Coil: 204... Face panel: 205... Hole: 206... Claw: 207... Open catch: 208... Fall prevention wire: 209... Upper chamber: 210... Board: 211... Control chip: 212... Wireless module: 213・・Lower chamber: 214・・Swirl blade-shaped member: 302・・Duct: 303・・Fan: 304・・Accommodation part: 305・・Pipeline: 306・・Slanted surface: 307・・Coil: 309・・Air outlet: 310... Board: 311... Control chip: 312... Wireless module: 319... Air outlet face: 320... Air supply port: 341... Suction port: 371... Flow tube member: 372... Outside Surface: 373... Inlet: 374... Outlet: 401... Coil: 402... Main piping: 403... Piping: 404... Radiation panel: 601... Total heat exchanger: 602... Rotor: 603・・Heat exchanger: 604・・Heat exchanger: 605・・Fan: 606・・Total heat exchanger: 607・・Fan: 608・・Heat exchanger: 801・・Total heat exchanger: 802, 802A, 802B... Heat exchanger: 803, 803A, 803B... Heat exchanger: 804... Fan: 805... Fan

Claims (12)

An air conditioning system that uses well water,
a first water pump that sends water from the well;
a first air conditioning means that air-conditions the air-conditioned space by supplying temperature-controlled air to the air-conditioned space using the heat of the well water sent by the first water pump;
a heat storage tank for storing well water sent by the first water pump;
a second water pump that sends well water stored in the heat storage tank;
a second air conditioning means that air-conditions the air-conditioned space by supplying temperature-controlled air to the air-conditioned space using the heat of well water sent by the second water pump ;
The well water whose heat is used by the first air conditioning means is well water that is not stored in a heat storage tank.
Air conditioning system. An air conditioning system that uses well water,
a first water pump that sends water from the well;
a first air conditioning means that air-conditions the air-conditioned space by supplying temperature-controlled air to the air-conditioned space using the heat of the well water sent by the first water pump;
a heat storage tank for storing well water sent by the first water pump;
a second water pump that sends well water stored in the heat storage tank;
a second air conditioning means that air-conditions the air-conditioned space by supplying temperature-controlled air to the air-conditioned space using the heat of well water sent by the second water pump;
The first air conditioning means air-conditions the air-conditioned space by exchanging heat between the well water sent by the first water pump and air via a first heat medium,
The second air conditioning means air-conditions the air-conditioned space by exchanging heat between well water sent by the second water pump and air via a second heat medium.
Air conditioning system. The first air conditioning means
a first heat exchanger that exchanges heat between at least a portion of the well water sent by the first water pump and a first heat medium;
a first air supply means for supplying air heat exchanged with a first heat medium to the air-conditioned space;
a first circulation pump that pumps and circulates a first heat medium between the first heat exchanger and the first air supply means;
The air conditioning system according to claim 2. The first water pump operates in two water feeding modes, a first water feeding mode and a second water feeding mode,
In the first water supply mode, the amount of well water supplied is adjusted so that the outlet temperature of the first heat medium in the first heat exchanger becomes a predetermined temperature,
In the second water supply mode, the amount of well water supplied is adjusted so that the amount of water stored in the heat storage tank is a predetermined amount.
The air conditioning system according to claim 3. The first air supply means includes an outside air processing machine that dehumidifies outside air and supplies the air to the air-conditioned space by exchanging heat between the first heat medium and outside air,
The first circulation pump circulates the outside air to the outside air treatment machine based on the enthalpy of the outside air sucked in by the outside air treatment machine and the state of exhaust gas discharged from the outside air treatment machine after exchanging heat with the sucked outside air. adjusting the amount of the first heat transfer medium to
The air conditioning system according to claim 3 or 4. The first air supply means includes a plurality of loads that individually supply air to each location in the air-conditioned space,
The second air conditioning means has means for uniformly adjusting the entire temperature of the air-conditioned space.
The air conditioning system according to any one of claims 3 to 5. The first circulation pump adjusts the amount of the first heat medium to be circulated to the plurality of loads based on the number of operating units of the plurality of loads.
The air conditioning system according to claim 6. At least some of the plurality of loads are installed in the attic of the air-conditioned space or on a desk placed in the air-conditioned space, and supply air to the air-conditioned space.
The air conditioning system according to claim 6 or 7. At least some of the plurality of loads installed in the ceiling of the air-conditioned space include a fan coil unit,
The fan coil unit includes:
a fan that blows air toward the air-conditioned space;
a coil disposed on the side of the air-conditioned space when viewed from the fan, through which a first heat medium passes through which exchanges heat with the air blown from the fan;
a plate-like member provided between the fan and the coil and having a plate surface arranged to block air blown out from the fan;
An air conditioning system according to any one of claims 6 to 8. The second air conditioning means
a second heat exchanger that exchanges heat between well water supplied by the second water pump and a second heat medium;
a second circulation pump that pumps and circulates a second heat medium between the second heat exchanger and the second air conditioning means;
The second water pump adjusts the amount of well water sent so that the outlet temperature of the second heat medium in the second heat exchanger becomes a predetermined temperature.
An air conditioning system according to any one of claims 1 to 9. An air conditioning method that uses well water,
a first air-conditioning step of air-conditioning the air-conditioned space by supplying temperature-controlled air to the air-conditioned space using heat from a well fed by the first water pump;
a water storage step of storing well water sent by the first water pump in a heat storage tank;
The air-conditioned space is air-conditioned by supplying temperature-controlled air to the air-conditioned space using the heat of the well water sent by the second water pump that sends the well water stored in the heat storage tank. a second air conditioning step ,
The well water for which heat is used in the first air conditioning step is well water that is not stored in a heat storage tank.
Air conditioning method. A method for controlling an air conditioning system using well water, the method comprising:
a first air-conditioning step of air-conditioning the air-conditioned space by supplying temperature-controlled air to the air-conditioned space using the heat of well water from a well fed by the first water pump;
By supplying temperature-controlled air to the air-conditioned space using the heat of the well water sent by the second water pump, which sends the well water sent and stored by the first water pump, a second air-conditioning step of air-conditioning the air-conditioned space ;
The well water for which heat is used in the first air conditioning step is well water that is not stored in a heat storage tank.
How to control an air conditioning system.

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