Air-conditioning device

Abstract

To provide a technique which can advantageously cool an air-conditioning space effectively using well water.SOLUTION: An air-conditioning device which can be used in an air-conditioning system using well water for adjusting a temperature in an air-conditioning space, includes: a heat medium passage through which a heat medium supplied from a heat exchanger for exchanging heat with the well water passes; a radiation panel for an interior surface which can transmit heat from a part of the heat medium passage and transmits cooling heat from the heat medium from a part of the interior surface which forms the air-conditioning space in which an air temperature is adjusted by the air-conditioning system; and a valve which can adjust a flow rate of the heat medium passing through the radiation panel.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an air conditioning device and an air-conditioned chair. [Background technology]

[0002] Techniques for utilizing well water in air conditioning systems have been disclosed (for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-80252 [Patent Document 2] Patent No. 6444747 Summary of the Invention [Problem to be solved by the invention]

[0004] When the heat of well water is used to adjust the temperature of the air supplied from an air conditioner to a space to be air-conditioned, the amount of heat produced for temperature adjustment is reduced, thereby realizing energy savings. However, the temperature of well water is likely to be higher than the temperature of chilled water generated by a refrigerator or the like. This could result in a higher temperature of the air supplied from the air conditioner. Therefore, it may be difficult for an air conditioner using well water to adequately cool the space to be air-conditioned.

[0005] Therefore, an object of the present application is to provide a technology that can effectively use well water to suitably cool a space to be air-conditioned. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention proposes placing an air conditioning unit that uses well water in a space where other air conditioning units are placed, or placing an air conditioning unit that uses well water in a location close to the user.

[0007] In detail, an air conditioning device according to one aspect of the present invention is an air conditioning device that can be used in an air conditioning system that uses well water to adjust the temperature of a space to be air-conditioned, and is equipped with a heat medium path through which a heat medium passes that is supplied from a heat exchanger that exchanges heat with the well water, a radiant panel for an interior surface that is capable of transferring heat from a portion of the heat medium path and that emits the cold heat of the heat medium from a portion of the interior surface that forms the space to be air-conditioned where the air temperature is adjusted by the air conditioning system, and a valve that can adjust the flow rate of the heat medium passing through the radiant panel.

[0008] This configuration allows the radiant panel to radiate cold heat to the space to be air-conditioned. The space in which this configuration is installed is also cooled by other air conditioning devices included in the air-conditioning system. Therefore, even if the temperature of the well water is high and the amount of radiant heat transferred from the radiant panel to the space to be air-conditioned is small, the space to be air-conditioned can be adequately cooled.

[0009] Furthermore, with this configuration, the flow rate of the heat medium can be adjusted depending on the installation location of the configuration by controlling the valve opening. This reduces the flow rate of the heat medium. This reduces the amount of well water used for heat exchange with the heat medium. This also reduces the power required for the pump that pumps the heat medium. Therefore, even when multiple air conditioning units are installed, energy savings can be achieved by effectively using well water.

[0010] In the air conditioning device according to the above aspect, the air conditioning device has a plurality of the radiating panels, the size of the radiating panels is equal to or smaller than a predetermined value, the plurality of the radiating panels are grouped into a set, and the set of the radiating panels The valve may be controlled to adjust the flow rate of the heat medium flowing through each of the heat medium paths capable of transferring heat to the panel.

[0011] By setting the size of the radiation panel to a predetermined value or less and grouping multiple radiation panels together as in this configuration, it is possible to limit the area where heat radiation is performed. Furthermore, with this configuration, the flow rate of the heat medium flowing through the heat medium path is adjusted for each group. Therefore, the flow rate of the heat medium can be adjusted individually for each area where the configuration is installed. In other words, the flow rate of the heat medium is reduced. Therefore, the flow rate of the well water that exchanges heat with the heat medium is also reduced. Furthermore, with this configuration, it is possible to reduce the power of the pump that pressurizes the heat medium. Therefore, this configuration can achieve energy savings by effectively utilizing well water.

[0012] Furthermore, with this configuration, the size of the radiant panel is equal to or smaller than a predetermined value, so it can be easily installed on the ceiling. This reduces installation costs. Furthermore, if other air conditioners included in the air conditioning system are installed near this configuration, the piping through which the heat medium supplied to the other air conditioners flows can be shared with the piping through which the heat medium supplied to this configuration flows. This also reduces installation costs for this configuration.

[0013] In the air conditioning device according to the above aspect, the valve may be controlled so that the heat medium always passes through the heat medium path of the air conditioning device arranged in the perimeter zone of the space to be air-conditioned, and the valve may be controlled so that the flow rate of the heat medium passing through the heat medium path of the air conditioning device arranged in the interior zone of the space to be air-conditioned changes depending on the temperature of the interior zone.

[0014] According to this configuration, the flow rate of the heat transfer medium is reduced in the interior zone. Therefore, the flow rate of the well water that exchanges heat with the heat transfer medium is reduced. In addition, the power of the pump that pressurizes the heat transfer medium can be reduced. Therefore, energy savings can be achieved by effectively utilizing well water. Furthermore, according to this configuration, fluctuations in room temperature can be suppressed in the perimeter zone, where the air conditioning load is high. Therefore, this configuration is a highly convenient device that can uniform the temperature in the air-conditioned space even if there are areas with different air-conditioning loads in the air-conditioned space.

[0015] Furthermore, an air conditioning device according to one aspect of the present invention is an air conditioning device that can be used in an air conditioning system that uses well water to regulate the temperature of the space to be air-conditioned, and is provided with a heat medium path through which water is supplied from a heat exchanger that exchanges heat with the well water and through which a heat medium that has absorbed the heat of the air in the air conditioning system passes, and the heat medium path is placed at a location above a predetermined height in an open-air area within a building, where radiant heat of a predetermined value or more can be transmitted to users.

[0016] Here, the predetermined value includes a value that allows the user to feel a cooling effect.

[0017] According to this configuration, the heat medium path is located at a predetermined height or higher in the open-ceiling area, where adjusting the thermal environment is difficult. The amount of radiant heat radiated from the heat medium path, equal to or greater than a predetermined value, is transferred to the user. Therefore, the thermal environment can be adjusted even in such a location. Furthermore, even when the temperature of the well water is high and the temperature of the heat medium passing through the heat medium path is high, the user can feel the cooling effect.

[0018] Furthermore, with this configuration, if other specified air conditioning units are installed in the building, the user can feel the cooling effect even if the cold air is generated by heat exchange with the heat medium used to generate cold air in the other specified air conditioning units. Therefore, this configuration can achieve energy savings by effectively using well water even when multiple air conditioning units are installed.

[0019] In the air conditioning device according to the above aspect, the heat medium path may include a first heat medium path through which a first heat medium having a temperature below a predetermined temperature passes, and a second heat medium path through which a second heat medium having a temperature equal to or higher than the predetermined temperature passes, and the air conditioning device may further include a valve capable of adjusting a flow rate of the first heat medium passing through the first heat medium path and a flow rate of the second heat medium passing through the second heat medium path.

[0020] According to this configuration, the flow rate of the heat medium flowing through the heat medium path is adjusted. Therefore, the heat medium flow rate is reduced. Therefore, the use of well water for heat exchange with the heat medium is reduced. In addition, the power of the pump that pressurizes the heat medium can be reduced. Therefore, even when multiple air conditioning units are installed, energy savings can be achieved by effectively utilizing well water. Furthermore, by reducing the use of well water, it becomes possible to easily respond to situations where the amount of well water that can be pumped from the well is limited.

[0021] Furthermore, with this configuration, the heat medium passing through the heat medium path can be switched between the first heat medium and the second heat medium. Therefore, it is possible to adjust whether cold heat or hot heat is radiated from the heat medium path. Such an air conditioner is a highly convenient device.

[0022] Furthermore, in the air conditioning device according to the above aspect, the heat medium may be a fan coil unit included in the air conditioning system, and may include a heat medium that has exchanged heat with air passing near the outer surface of a coil included in the fan coil unit that is retrofitted to the underside of the desk top.

[0023] According to this configuration, the heat medium used to generate cold air in the coil of a fan coil unit attached to the underside of the desk top in the building is reused to generate cold air. With this configuration, even if multiple air conditioning units are installed, well water can be effectively used to achieve energy savings.

[0024] Furthermore, a chair according to one aspect of the present invention is an air-conditioned chair that can be used in an air-conditioning system that uses well water to regulate the temperature of a space to be air-conditioned, and is equipped with a heat medium path through which a heat medium sent from a heat exchanger that exchanges heat with the well water passes, and a transmission means that absorbs cold heat from the heat medium passing through the heat medium path and transmits the absorbed cold heat to the seat of the air-conditioned chair.

[0025] According to this configuration, the cold absorbed from the heat medium flowing through the heat medium path can be transferred to the user through the seat. Therefore, the cold can be transferred from a close distance to the seated user, improving the cold transfer efficiency. Therefore, the user can be cooled as desired. Furthermore, the user can feel the cooling effect even when the temperature of the well water is high.

[0026] Furthermore, since cold can be transferred to the user from a close distance, the amount of cold transferred to the user can be reduced. This reduces the flow rate of the heat medium. This reduces the amount of well water used for heat exchange with the heat medium. This also reduces the power required for the pump that pressurizes the heat medium. This makes it possible to effectively use well water and achieve energy savings. Furthermore, by reducing the amount of well water used, it becomes possible to easily respond to situations where the amount of well water that can be pumped from a well is limited.

[0027] Furthermore, in the chair relating to the above-described aspect, the seat may have an opening, and the transmission means may have a hollow portion having a ventilated hollow space that is connected to the opening, and a fan that supplies air that has absorbed cold heat from the heat medium passing through the heat medium path toward the hollow space.

[0028] According to this configuration, cool air is supplied to the clothes of the user sitting on the seat surface, and the cool air is prevented from directly hitting the user's skin. Remembering is inhibited.

[0029] In the chair according to the above aspect, the transfer means may have a member on the back side of the seat that is capable of transferring heat from the heat medium path.

[0030] With this configuration, cold air is transferred from the member to the clothes of the user sitting on the seat, preventing the cold air from directly hitting the user's skin and preventing the user from feeling uncomfortable. [Effects of the Invention]

[0031] According to the present invention, it is possible to provide a technology that can effectively use well water to suitably cool a space to be air-conditioned. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 shows an example of an outline of the configuration of an air conditioning system according to an embodiment. [Figure 2] FIG. 2 illustrates a schematic example of an overview of a DCFCU. [Figure 3] FIG. 3 shows an example of variations in the shape of holes provided in the face panel. [Figure 4] Figure 4 shows an example of a desk with a retrofitted DCFCU. [Figure 5] FIG. 5 shows a DCFCU according to a modified example. [Figure 6] FIG. 6 shows an example of an outline of a DCFCU according to another modified example. [Figure 7] FIG. 7 illustrates an overview of a counter air conditioner. [Figure 8] FIG. 8 shows an example of an outline of an outside air processing machine. [Figure 9] FIG. 9 shows an example of a schematic diagram of a duct unit. [Figure 10] FIG. 10 is an example of a cross-sectional view of a branch where an anemometer is arranged. [Figure 11] Figure 11 shows a schematic diagram of an air-conditioning sofa. [Figure 12] FIG. 12 is an example of a detailed view of an air-conditioning sofa. [Figure 13] FIG. 13 illustrates an outline of a modified example of an air-conditioning sofa. [Figure 14] FIG. 14 shows an example of a schematic view of a ceiling panel unit. [Figure 15] FIG. 15 illustrates an overview of a floor panel unit. [Figure 16] FIG. 16 illustrates an overview of a water source heat pump unit. [Figure 17]FIG. 17 illustrates an overview of the Cool Spot device. [Figure 18] FIG. 18 shows an example of the layout of the air supply means. [Figure 19] FIG. 19 shows another example of the layout of the air supply means. [Figure 20] FIG. 20 shows an example of a flowchart of the operation of the DCFCU. [Figure 21] FIG. 21 shows an example of the intake air flow overview when the DCFCU is operating. DETAILED DESCRIPTION OF THE INVENTION

[0033] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes embodiments of the present invention. The embodiments described below are merely examples of the present invention, and the technical scope of the present invention is not limited to the following aspects.

[0034] (System Overview) FIG. 1 shows an example of the general configuration of an air conditioning system 1 according to this embodiment. In the following description, the air conditioning system 1 is assumed to supply cool air to, for example, multiple spaces to be air-conditioned. The air conditioning system 1 includes multiple air supply means for supplying cool air to the spaces to be air-conditioned. As shown in FIG. 1, the air conditioning system 1 includes a well water pump 2 that pumps well water from a well. The pumped well water is used as a heat medium for heat exchange with water used to generate cool air in each air supply means. In the following description, this type of well water is referred to as direct system well water.

[0035] As shown in Fig. 1, the air conditioning system 1 also includes a water tank 9 that stores well water pumped up by the well water pumping pump 2 for a predetermined period (e.g., overnight). The well water stored in the water tank 9 is also used for heat exchange with water used to generate cool air in each air supply means. In the following description, such well water will be referred to as indirect system well water.

[0036] The air conditioning system 1 includes an outdoor air treatment unit 60, a DC fan coil unit (hereinafter referred to as DCFCU) 20, a desk 30, an air-conditioned sofa 90, and a counter air conditioner 10, as an example of multiple air supply means that use well water from a direct system (see the upper right part of Figure 1).

[0037] The outside air processor 60 draws in outside air and performs latent heat processing on the outside air. Then, the outside air that has been cooled by the latent heat processing is supplied to the space to be air-conditioned.

[0038] The DCFCU 20 is installed above the ceiling of the space to be air-conditioned. The DCFCU 20 supplies cool air to the space to be air-conditioned. The desk 30 is placed in the space to be air-conditioned. A DCFCU 20A of the same type as the DCFCU 20 is later attached to the desk.

[0039] In the air-conditioned sofa 90, cool air is blown out or radiated from the seat surface. In the countertop air-conditioner 10, cool air is radiated from the outer surface of the piping.

[0040] The air conditioning system 1 also includes an air supply means that uses indirect well water. That is, the air conditioning system 1 includes a ceiling panel unit 40, a DCFCU 20B, a floor panel unit 45, a water-source heat pump unit 50, and a cool spot device 55 as examples of multiple air supply means that use indirect well water (see the lower right of FIG. 1).

[0041] The ceiling panel unit 40 is installed above the ceiling of the space to be air-conditioned. Cooling heat is radiated from the ceiling panel unit 40 toward the space to be air-conditioned.

[0042] The DCFCU 20B is a unit of the same type as the DCFCU 20. However, the DCFCU 20B is disposed near the ceiling panel unit 40.

[0043] The water-source heat pump unit 50 is placed in a room (such as a conference room) near where the ceiling panel unit 40 is placed. The water-source heat pump unit 50 draws air from the room, cools the air, and then circulates the air through the room. The floor panel unit 45 is placed under the floor of the space to be air-conditioned. The floor panel unit 45 radiates cold heat toward the floor.

[0044] The cool spot device 55 is installed, for example, in a hallway from the entrance of a building to a room inside the building. Cool air is supplied to the cool spot device 55 from the water heat source heat pump unit 50. The cool spot device 55 then blows the supplied cool air toward the hallway.

[0045] The following provides an example of the detailed configuration of each air supply means. (Configuration of each air supply means using well water in a direct system) <dcfcu20> FIG. 2 shows a schematic example of the DCFCU 20. FIG. 2(A) shows an example of a longitudinal cross section of the DCFCU 20. FIG. 2(B) shows an example of a lateral cross section of the DCFCU 20. As shown in FIG. 2, the DCFCU 20 includes a fan 201 that draws in and blows out air. The fan 201 is a DC fan whose blades are driven by a DC current. The fan 201 blows out air in a direction laterally relative to the direction toward the space to be air-conditioned. The fan 201 are provided side by side in the longitudinal direction.

[0046] The DCFCU 20 also includes a coil 203 on the side of the fan 201 that faces the space to be air-conditioned, with a predetermined space between the coil 203 and the fan 201. As shown in FIG. 2(A), chilled water that has exchanged heat with well water passes through the inside of the coil 203. The DCFCU 20 also includes an electric valve 215. The flow rate of chilled water flowing into the coil 203 is adjusted by controlling the opening of the electric valve 215.

[0047] The coil 203 exchanges heat with the air blown out from the fan 201, removing sensible heat contained in the blown air. In other words, the coil 203 is a dry coil. Therefore, the DCFCU 20 does not need to be provided with a drain plate. A predetermined space between the fan 201 and the coil 203 is defined as an upper chamber 209.

[0048] The DCFCU 20 also includes a baffle plate 202 in the upper chamber 209. The baffle plate 202 is installed at 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.

[0049] The DCFCU 20 also includes a face panel 204 with a predetermined space between it and the coil 203, on the side of the space to be air-conditioned. The face panel 204 also includes holes 205 through which the cool air that exchanges heat with the coil 203 and passes through gaps between the members that form the coil 203 passes toward the space to be air-conditioned. The predetermined space between the coil 203 and the face panel 204 is defined as a lower chamber 213.

[0050] 3A and 3B show examples of variations in the shape of the holes 205 provided in the face panel 204. FIG. 3A shows an example in which multiple wing-shaped members 214 are arranged in the holes 205 so as to swirl, and cool air is blown out from the gaps between the swirling wing-shaped members 214. FIG. 3B shows an example in which the face panel 204 is made of punched metal. FIG. 3C shows an example in which multiple circular holes are provided in the face panel 204.

[0051] 3(A), the air blown out from the holes 205 is sent to the air-conditioned space in a swirling manner, thereby suppressing the draft felt by people in the air-conditioned space, thereby improving the comfort felt by people in the air-conditioned space.

[0052] Furthermore, when the holes 205 have the shape shown in Fig. 3(B), cool air is supplied uniformly from the entire surface of the face panel 204. In other words, because turbulence of the air flow is suppressed, an environment with a high spot cooling effect can be provided in the air-conditioned space. Furthermore, when the holes 205 have the shape shown in Fig. 3(C), a large amount of cool air can be supplied to the air-conditioned space.

[0053] As shown in FIG. 2, the DCFCU 20 also includes a hook 206 for hooking the face panel 204 onto the body of the DCFCU 20 .

[0054] The DCFCU 20 also includes an open catch 207 that is installed on the DCFCU 20 main body and secures the face panel 204 to the main body of the DCFCU 20. The open catch 207 has a magnet that attaches and secures the face panel 204, and has a mechanism that causes the part where the magnet is provided to be pushed toward the ceiling and then released from that part, causing that part to pop out toward the air-conditioned space. In other words, a user pushes the part of the face panel 204 where the open catch 207 is provided toward the ceiling from the air-conditioned space side, and then releases their hand, causing that part to open slightly toward the air-conditioned space side from the ceiling, and then inserts their hand into the gap and pulls it toward the air-conditioned space side, opening the face panel 204. It can take you away from Catch-207.

[0055] 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 space to the face panel 204 and prevents the face panel 204 from falling into the space to be air-conditioned. In other words, the face panel 204 can be easily replaced.

[0056] The DCFCU 20 also includes a substrate 210. A control chip 211 is mounted on the mounting surface of the substrate 210. The control chip 211 is electrically connected to the fan 201 and controls the operation of the fan 201. The mounting surface of the substrate 210 also includes a wireless module 212 that can communicate wirelessly with an external terminal.

[0057] <Desk 30> Fig. 4 shows an example of an outline of a desk 30 to which a DCFCU 20A has been retrofitted. Fig. 4(A) shows an example of an outline of a top view of the desk 30. Fig. 4(B) shows an example of an outline of a cross-section of the desk 30.

[0058] 4, the DCFCU 20A is attached to the underside of the top board 31 of the desk 30. The DCFCU 20A includes a duct 302. The duct 302 is provided with holes through which screws pass, and the duct 302 is fixed by engaging the screws that pass through the holes with holes provided at predetermined positions on the underside of the top board 31 of the desk 30.

[0059] The DCFCU 20A also includes two fans 303. As shown in FIG. 4(B), the duct 302 includes a housing 304 that houses the fans 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 rear surface of the top board 31. The fans 303 may also be so-called DC fans in which blades provided on the fans 303 rotate when a direct current is applied to a motor provided inside the fans 303.

[0060] The DCFCU 20A also has an intake port 341 in the housing 304 that draws in air from the outside when the fan 303 operates. The intake port 341 is provided in the housing 304 below the fan 303. When the DCFCU 20A is later attached to the underside of the top panel 31 of the desk 30, the intake port 341 is located on the back panel 32 side of the desk 30. By providing the intake port 341 and the fan 303 in this manner, the housing 304 can be made thin while having a simple structure. Furthermore, by installing the fans 303 side by side in the horizontal direction, the thickness of the housing 304 can be made thin while increasing the amount of air blown out.

[0061] The DCFCU 20A also includes a coil 307. The coil 307 is plate-shaped and formed from a flow tube member 371 that meanders in a plane. An inlet 373 through which water flows in is provided at the end of the flow tube member 371 that forms the lower part of the coil 307 (the part located near the bottom surface of the accommodation section 304 in FIG. 4(B)). An outlet 374 through which water that has passed through the inside of the flow tube member 371 flows out is provided at the end of the flow tube member 371 that forms the upper part of the coil 307. That is, the water exchanges heat with the air blown out from the fan 303 via the flow tube member 371.

[0062] Furthermore, the coil 307 is installed facing up 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 so as to stand upright on a horizontal plane in order to exchange heat with the air blown out from the fan 303. Therefore, the housing section 304 is made thinner.

[0063] Duct 302 of DCFCU 20A also includes rectangular duct 305 through which air blown from fan 303 and passing through gaps between flow tube members 371 of coil 307 passes on its way toward a seated person. Housing 304 and duct 305 are in communication. Conduit 305 has a bottom that is stepped relative to the bottom surface of housing 304 toward the back surface of top board 31 of desk 30. Duct 302 also includes inclined surface 306 at the stepped portion.

[0064] DCFCU20A also has a blowout face 319 at the bottom of the end of desk 30 on the side of duct 305 where the seated person sits. Blowing face 319 has air inlet 320 with multiple small holes arranged horizontally. The blown air that has passed through duct 305 is supplied to the seated person through air inlet 320. Here, blowout face 319 is installed at an angle with respect to the horizontal plane, and the air blown out from air inlet 320 travels diagonally upward toward the upper body of the seated person.

[0065] The DCFCU 20A also includes a substrate 310. A control chip 311 is mounted on the mounting surface of the substrate 310. The control chip 311 is electrically connected to the fan 303 and controls the operation of the fan 303. The mounting surface of the substrate 310 also includes a wireless module 312 that can communicate wirelessly with an external terminal.

[0066] Regarding the dimensions of each part of duct 302, the length of duct 305 in the depth direction as seen from a seated occupant is, for example, about 380 mm. The thickness of duct 305 is, for example, about 20 mm. The total length of accommodation section 304 and the step portion where accommodation section 304 and duct 305 communicate with each other in the depth direction as seen from a seated occupant is, for example, about 270 mm. The thickness of accommodation section 304 is, for example, about 80 mm. The vertical length of air intake port 320 provided in blow-out face 319 is, for example, about 5 mm.

[0067] 5 shows a modified DCFCU20AA. As shown in FIG. 5, the DCFCU20AA is a device that does not include a conduit 305 and has a reduced depth of, for example, about 300 mm (its thickness is, for example, about 80 mm, similar to the DCFCU20A). When such a DCFCU20AA is retrofitted to a desk 30A that has a reinforcing member 33 on the underside of the top panel 31, the DCFCU20AA can avoid the reinforcing member 33.

[0068] DCFCU20AA also has air intake port 320A, which has multiple small holes arranged horizontally, at the top of the seating-side side of accommodation section 304A, similar to air intake port 320. That is, air that passes through the gaps between flow tube members 371A of coil 307A is supplied to the seated occupant through air intake port 320A (details will be described later). Furthermore, the air blown out from air intake port 320A travels diagonally upward toward the upper body of the seated occupant.

[0069] The DCFCU 20AA also includes a guide 321 inside the housing 304A near the air inlet 320A. The guide 321 guides air that has passed through the gaps between the flow tube members 371A of the coil 307A to the air inlet 320A. Although not shown, the guide 321 includes a pivoting portion at the connection point with the housing 304A, allowing it to rotate around the horizontal direction of the desk 30A as the axis of rotation. In other words, by changing the orientation of the guide 321, the DCFCU 20AA adjusts the direction and amount of air that has passed through the gaps between the flow tube members 371A of the coil 307A and flows into the air inlet 320A. This also adjusts the direction and amount of air blown out from the air inlet 320A. The DCFCU 20AA also includes an inclined surface 306A on the seating side of the housing 304A.

[0070] Such a DCFCU20AA has the effect of the DCFCU20A shown in FIG. ) can be achieved. In addition, even for a desk 30A equipped with a reinforcing member 33, the DCFCU 20AA can be easily installed on the desk 30A without changing the dimensions of the conduit 305 to avoid the reinforcing member 33. Furthermore, according to such a DCFCU 20AA, the side surface on the seating side of the accommodation portion 304A is provided with an inclined surface 306A, so that when a seated person sits down, a part of the seated person's body is prevented from coming into contact with the accommodation portion 304A of the DCFCU 20AA. In other words, such a DCFCU 20AA can provide comfort to the seated person.

[0071] Furthermore, with such a DCFCU 20AA, the direction and amount of air blown out from the air supply port 320A can be adjusted by rotating the guide 321. In other words, such a DCFCU 20AA is a device that can flexibly respond to the needs of a seated occupant, such as the direction of the supply air, the amount of supply air, and the parts of the body that the supply air hits.

[0072] FIG. 6 shows an example of the outline of a DCFCU 20AB according to another modification. FIG. 6(A) shows an example of the outline of a cross-section of the DCFCU 20AB. FIG. 6(B) shows an example of a perspective view of the DCFCU 20AB. As shown in FIG. 6, the DCFCU 20AB is retrofitted to a desk 30A. That is, a reinforcing member 33 is positioned midway through a conduit 305B of the DCFCU 20AB. In the conduit 305B of the DCFCU 20AB retrofitted to such a desk 30A, the portion covering the reinforcing member 33 is formed by a fabric flexible joint 308.

[0073] The DCFCU 20AB described above can achieve the same effects as those of the DCFCU 20A shown in FIG. 4 (described later). In addition, while maintaining the thinness of the duct 305B, the air vibrations that cause noise when the blades of the fan 303B rotate are absorbed by the flexible joint. This reduces leakage of the noise to the outside. Therefore, when a seated person sits, the degree to which the seated person perceives the noise of the fan 303B is reduced. This reduces the discomfort felt by the seated person due to the noise. Furthermore, because the flexible joint has cushioning properties, even if a part of the seated person's body comes into contact with the flexible joint, the discomfort felt by the seated person is reduced. In other words, the DCFCU 20AB described above can provide comfort to the seated person.

[0074] <Counter Air Conditioner 10> Fig. 7 illustrates an overview of the counter air-conditioner 10. Fig. 7(A) is an example of a side view of the counter air-conditioner 10. Fig. 7(B) is an example of a front view of the counter air-conditioner 10. Fig. 7(C) is a partially enlarged view of the counter air-conditioner 10.

[0075] As shown in FIG. 7(A), counter air-conditioner 10 is placed on counter 19, for example, located on the second floor of an open-ceiling area in a building. Note that the location where counter air-conditioner 10 is installed is not limited to a counter, and it may be placed at a predetermined height from the bottom of the open-ceiling area. Counter air-conditioner 10 includes a three-layer aluminum pipe 101. As shown in FIG. 7(A), three-layer aluminum pipe 101 is placed below counter 19 in a position facing the feet of a user when seated on counter 19.

[0076] 7(B), the aluminum three-layer pipe 101 includes a cold water supply pipe 101A (an example of the "first heat medium path" of the present invention) through which cold water flowing from the system (an example of the "first heat medium" of the present invention) passes, and a cold water return pipe 101B through which cold water returning to the system passes. The aluminum three-layer pipe 101 also includes a hot water supply pipe 101C (an example of the "second heat medium path" of the present invention) through which hot water flowing from the system (an example of the "second heat medium" of the present invention) passes, and a hot water return pipe 101D through which hot water returning to the system passes.

[0077] Countertop air conditioner 10 also has pipes 102 (102A, 102B). Pipe 102 connects triple-layer aluminum pipe 101 to the system. Pipe 102 branches off midway. A chilled water supply pipe 101A and a hot water supply pipe 101C are connected to the pipes branching off from pipe 102A, respectively. Meanwhile, a chilled water return pipe 101B and a hot water return pipe 101D are connected to the pipes branching off from pipe 102B, respectively.

[0078] Countertop air conditioner 10 also includes manual valves 104. Manual valves 104 are provided on each of the branch pipes of pipe 102. More specifically, manual valve 104A is provided on pipe 102A connected to chilled water supply pipe 101A. Manual valve 104B is provided on pipe 102A connected to chilled water return pipe 101B. Manual valve 104C is provided on pipe 102A connected to hot water supply pipe 101C. Manual valve 104D is provided on pipe 102B connected to hot water return pipe 101D.

[0079] By controlling the opening degree of manual valve 104, it is possible to select whether the water flowing through three-layer aluminum pipe 101 is cold water or hot water. In other words, when manual valves 104A and 104B are open and manual valves 104C and 104D are closed, cold water flows through cold water supply pipe 101A and cold water return pipe 101B. Conversely, when manual valves 104A and 104B are closed and manual valves 104C and 104D are open, hot water flows through hot water supply pipe 101C and hot water return pipe 101D.

[0080] Countertop air conditioner 10 also includes solenoid valve 105. Solenoid valve 105 is installed midway through pipe 102B, closer to the system than the locations where manual valves 104 (104B, 104D) are installed. By controlling the opening of solenoid valve 105, the flow rate of cold water or hot water passing through pipe 102 can be adjusted. Therefore, the flow rate of cold water or hot water flowing through three-layer aluminum pipe 101 is adjusted, and as a result, the amount of heat radiated from the surface of three-layer aluminum pipe 101 is adjusted.

[0081] 7(C), the counter air conditioner 10 includes a joint 103. The joint 103 connects the three-layer aluminum pipes 101 together. The joint 103 is fixed to the counter 19 with a screw.

[0082] <Outside air processor 60> Fig. 8 shows an example of the outline of the outdoor air processor 60. As shown in Fig. 8, the outdoor air processor 60 includes an air supply path 609 through which the sucked outdoor air passes before being supplied to the air-conditioned space, and an exhaust path 610 through which return air from the air-conditioned space passes and is discharged outside the system. The outdoor air processor 60 also includes a desiccant rotor 602. The desiccant rotor 602 is installed across the air supply path 609 and the exhaust path 610.

[0083] The outside air processor 60 also includes a heat exchanger 603 located upstream of the desiccant rotor 602 in the air intake path 609, and a heat exchanger 604 located downstream of the desiccant rotor 602. The heat exchanger 603 is a heat exchanger for pre-cooling the outside air before it enters the desiccant rotor 602. Therefore, cold water passes through the inside of the coil of the heat exchanger 603. The heat exchanger 604 is a heat exchanger for cooling the outside air that has been heated by passing through the desiccant rotor 602. Therefore, it is desirable to circulate low-temperature water through the coil of the heat exchanger 604.

[0084] The outside air processor 60 also includes a heat exchanger 608 located in the exhaust path 610, upstream of the desiccant rotor 602. The heat exchanger 608 is a heat exchanger for heating return air from the room before it enters the desiccant rotor 602. Therefore, hot water that utilizes heat generated by, for example, biomass CHP (Combined Heat and Power) passes through the inside of the coil.

[0085] The outdoor air processor 60 also includes a total heat exchanger 601 that spans the inlet of the air supply path 609 and the outlet of the exhaust path 610. The outdoor air is cooled by exchanging heat with return air from the room in the total heat exchanger 601. This reduces the energy required to cool the outdoor air in the heat exchanger 603. The outdoor air processor 60 also includes an intake fan 605 at the outlet of the air supply path 609 that supplies air to the space to be air-conditioned, and an exhaust fan 607 at the outlet of the exhaust path 610 that exhausts return air from the space to be air-conditioned.

[0086] <Duct Unit 70> The air conditioning system 1 also includes a duct unit 70 connected to the air intake duct 609 of the outdoor air processor 60. Fig. 9 shows an example of an outline of the duct unit 70. The duct unit 70 has, for example, one end connected to the air intake duct 609 of the outdoor air processor 60 and the other end connected to an outlet 705 of the space to be air-conditioned. The duct unit 70 has a main body 701 connected to the air intake duct 609 of the outdoor air processor 60, and a branching portion 706 that branches into four parts midway through the main body 701. The inner diameter of the main body 701 is, for example, about three times the inner diameter of the branching portion 706.

[0087] Duct unit 70 also includes a damper 702 capable of adjusting the flow rate of supply air at each branching section 706, and an anemometer 703. Anemometer 703 can measure the air volume and temperature of supply air passing through branching section 706. Anemometer 703 also has a communication module. Anemometer 703 can transmit measured data to an external device (e.g., a computer, a smartphone, etc.) via a network. Damper 702 also has a communication module. The angle of damper 702 is controlled via the network, thereby adjusting the air volume of supply air passing through branching section 706.

[0088] 10 is an example of a cross-sectional view of a branching section 706 in which an anemometer 703 is disposed. As shown in FIG. 10, the anemometer 703 is of a vane type and has blades 704. The center of rotation of the blades 704 is disposed at a position offset from the center of the branching section 706. For example, if the inner diameter of the branching section 706 is 125 mm or less, the center of rotation of the blades 704 is disposed at a position within 2 / 3D (D is the inner diameter of the branching section 706) downward from the upper part of the inner wall of the branching section 706. Furthermore, if the inner diameter of the branching section 706 is 150 mm or more, the center of rotation of the blades 704 is disposed at a position approximately 1 / 6D to 1 / 2D downward from the upper part of the inner wall of the branching section 706.

[0089] In the duct unit according to the comparative example, when adjusting the supply air volume, first, the air volumes of all the outlets 705 are measured when all the dampers are fully open. Next, the air volumes of all the outlets 705 are measured while the dampers are manually operated. Then, the above procedure is repeated until the supply air volume matches the design air volume. The air volume is measured visually.

[0090] In the case of the duct unit according to this comparative example, the air volume adjustment work is a cumbersome manual process. Furthermore, conventional air volume meters may incorporate, for example, a rectifying element. This increases the airflow resistance within the duct and increases the power required to transport the supply air. Furthermore, because the air volume is measured visually, there is a risk of operational errors. Furthermore, since the adjustment must be performed by a specialist air volume adjustment company, the cost of trial operation and adjustment is likely to be high.

[0091] On the other hand, in the case of duct unit 70 according to this embodiment, an anemometer 703 is provided at each of branching sections 706. Furthermore, measurement data is transmitted from anemometer 703 to an external device via a network. Therefore, the supply air volume passing through each of branching sections 706 can be easily grasped using a local computer, smartphone, or the like. Furthermore, by controlling damper 702 based on the data measured by anemometer 703, the supply air volume passing through each of branching sections 706 can be easily adjusted to the design air volume.

[0092] Furthermore, this adjustment of the supply air volume is performed automatically, which reduces operational errors. Furthermore, the supply air volume can be adjusted without having to rely on a specialist air volume adjustment company. This reduces the cost of trial operation and adjustment.

[0093] Furthermore, in the duct unit 70 described above, the anemometer 703 is disposed so that the center of rotation of the blades 704 of the anemometer 703 is positioned away from the center of the branching portion 706. Here, if the anemometer 703 is disposed so that the center of rotation of the blades 704 coincides with the center of the branching portion 706, the wind speed will be measured as being higher than the actual speed. According to the present embodiment, such an overestimation of the wind speed is suppressed.

[0094] Furthermore, if the center of rotation of blade 704 is located near the inner wall of branching section 706, friction with the inner wall will slow down the supply air passing near the inner wall, causing the wind speed to be measured as being lower than it actually is. This embodiment prevents the wind speed from being measured as being lower than it actually is. In other words, this embodiment improves the accuracy of measuring the wind speed of the supply air.

[0095] Furthermore, the anemometer 703 of this embodiment is of the vane type. Therefore, the wind speed in the circular area circumscribing the blades 704 can be measured with high accuracy. This also contributes to improving the measurement accuracy of the wind speed of the supply air.

[0096] Furthermore, because the anemometer 703 is of the vane type, the supply air can pass through the gaps between the blades 704. This reduces the ventilation resistance within the branching section 706. This reduces the power required to transport the supply air.

[0097] <Air-conditioning sofa 90> When individual air conditioning is performed for each user, it is conceivable to install an air conditioner that blows cool air from an outlet. However, if the cool air comes into contact with the user's skin, the user may feel uncomfortable. Therefore, an air conditioning device that can perform individual air conditioning without causing discomfort to the user is provided. The air-conditioned sofa 90 is an example of the "air-conditioned chair" of the present invention.

[0098] 11 shows a schematic diagram of an air-conditioned sofa 90. The air-conditioned sofa 90 has a seat 901 large enough to seat multiple people (approximately three adults) at the same time. The seat 901 has two circular sections. The air-conditioned sofa 90 may be, for example, a type in which temperature-controlled supply air is blown out from the seat 901 (air-conditioned sofa 90A), or a type in which heat is radiated from the seat 901 (air-conditioned sofa 90C).

[0099] Fig. 12 illustrates an overview of an air-conditioned sofa 90A. Fig. 12(A) is an example of a top view of the air-conditioned sofa 90A. Fig. 12(B) is an example of a cross-sectional view of the air-conditioned sofa 90A.

[0100] 12(B), the air-conditioning sofa 90A includes cushions 902 (902A, 902B). The cushions 902 are made of a breathable material.

[0101] The air-conditioned sofa 90A also includes seating sections 903 (903A, 903B). The seating sections 903 are placed on top of the cushions 902. The seating sections 903 have feathers inside, for example. The seating surfaces 901 (901A, 901B), which are the upper surfaces of the seating sections 903, have multiple openings 918 (918A, 918B) that open in the vertical direction.

[0102] The air-conditioned sofa 90A is provided with hollow portions 904 (904A, 904B) that form a hollow portion below the cushion 902. The top surface of the inner wall that forms the hollow portion of the hollow portion 904 becomes the underside of the cushion 902.

[0103] The air-conditioned sofa 90A also includes rotation rollers 919 (919A, 919B). The rotation rollers 919 are provided on the edges of the underside of the cushion 902. The lower part of the central part of the air-conditioned sofa 90A is fixed to the floor. When the rotation rollers 919 rotate, the cushion 902 rotates around the lower central part of the air-conditioned sofa 90A.

[0104] 12(A), the air-conditioned sofa 90A is provided with piping 905 (905A, 905B), one end of which communicates with the hollow portion 904 and the other end of which has inlet ports 914 (914A, 914B) for drawing in outside air. The piping 905 is made of, for example, glass wool. The outside air inlet port 914 of the piping 905 is provided in the lower center of the main body of the air-conditioned sofa 90A.

[0105] The air-conditioned sofa 90A also includes a fan 906 (906A, 906B) in the middle of the piping 905 that draws in outside air and blows it out toward the hollow portion 904. The air-conditioned sofa 90A also includes a guide vane 908 (908A, 908B) in the piping 905 downstream of the fan 906. By controlling the angle of the guide vane 908, the volume and direction of the air supplied to the hollow portion 904 can be adjusted.

[0106] The air-conditioned sofa 90A also includes coils 909 (909A, 909B). The coils 909 are arranged between the air inlet 914 and the fan 906. Water that has exchanged heat with well water from the direct system passes through the inside of the coil 909A. Therefore, outside air drawn in through the air inlet 914A exchanges heat with the surface of the coil 909A, generating cool air.

[0107] Meanwhile, hot water passes through the inside of coil 909B. Therefore, outside air drawn in through intake port 914B exchanges heat with the surface of coil 909B, generating warm air. Therefore, cool air can be supplied from opening 918A in seat surface 901A, and warm air can be supplied from opening 918B in seat surface 901B.

[0108] The air-conditioned sofa 90A also includes an outgoing pipe 910 (910A, 910B) and a return pipe 911 (911A, 911B) connected to the coil 909. The outgoing pipe 910A connected to one end of the coil 909A carries cold water that has exchanged heat with well water in a direct system. The return pipe 911A connected to the other end of the coil 909A carries cold water that has passed through the coil 909A and has exchanged heat.

[0109] Meanwhile, hot water passes through an outgoing pipe 910B connected to one end of the coil 909B. And, hot water that has passed through the coil 909B and has undergone heat exchange passes through a return pipe 911B connected to the other end of the coil 909B. A hole is provided in the floor portion of the floor on which the air-conditioned sofa 90A is placed. And, the outgoing pipe 910 and the return pipe 911 pass through the hole and are further disposed under the floor.

[0110] The air-conditioning sofa 90A also includes a valve 912 (912A, 912B). The valve 912 is provided midway along the outflow pipe 910. The air-conditioning sofa 90A also includes a temperature sensor 913 (913A, 913B) downstream of the fan 906. The temperature sensor 913 is connected to the valve 912. Therefore, the opening of the valve 912 is controlled using temperature information inside the pipe 905 measured by the temperature sensor 913, thereby adjusting the flow rate of cold water or hot water passing through the outflow pipe 910. In this way, the temperature of the outside air passing over the surface of the pipe 905 is adjusted to a desired temperature.

[0111] 13 illustrates an overview of an air-conditioning sofa 90C. The air-conditioning sofa 90C transfers cold or heat to the user instead of cold or warm air.

[0112] More specifically, the air-conditioned sofa 90C does not have an opening 918 in the seat surface 901 (901C, 901D). The air-conditioned sofa 90C also has multiple panel units 915 (915C, 915D) below the seating portion 903 (903C, 903D). The multiple panel units 915 are connected in series. The panel units 915 are the same type of panel unit as the floor panel unit 45 (described below).

[0113] More specifically, the panel unit 915 includes a metal panel body 916 (916C, 916D) and tubes 917 (917C, 917D) in contact with the panel body 916. Cold water passes through the tube 917C. The cold water that passes through the tube 917C that is in contact with a specific panel body 916C flows into the tube 917C that is in contact with another panel body 916C that is connected in series. On the other hand, hot water passes through the tube 917D. The hot water that passes through the tube 917D that is in contact with a specific panel body 916D flows into the tube 917D that is in contact with another panel body 916D that is connected in series. The heat of the cold water or hot water is transferred to the panel body 916 via the surface of the tube 917.

[0114] The air-conditioned sofa 90C also includes an outgoing pipe 910 (910C, 910D) and a return pipe 911 (911C, 911D) connected to a tube 917. Chilled water that has exchanged heat with well water in the direct system passes through the outgoing pipe 910C. The outgoing pipe 910C is connected to a tube 917C that contacts the first panel body 916C in the row of panel bodies 916 connected in series. Therefore, the chilled water that has passed through the outgoing pipe 910C flows into the tube 917C that contacts the first panel body 916C.

[0115] Meanwhile, the return pipe 911C is connected to a tube 917C that contacts the last panel body 916C in the row of serially connected panel bodies 916C. Therefore, the return pipe 911C receives the heat-exchanged cold water that has passed through the tubes 917C that contact each of the rows of serially connected panel bodies 916C.

[0116] Meanwhile, hot water passes through the outgoing pipe 910D. The outgoing pipe 910D is connected to a tube 917D that contacts the first panel body 916D in the row of panel bodies 916D connected in series. Therefore, the hot water that has passed through the outgoing pipe 910D flows into the tube 917D that contacts the first panel body 916D.

[0117] Meanwhile, the return pipe 911D is connected to a tube 917D that contacts the last panel body 916D in the row of panel bodies 916D connected in series. Therefore, hot water that has passed through the tubes 917D that contact each of the rows of panel bodies 916D connected in series and has undergone heat exchange flows into the return pipe 911D.

[0118] Similarly to the air-conditioning sofa 90A, the air-conditioning sofa 90C has a valve 912 (912C, 912D) provided midway along the outflow pipe 910 (910C, 910D). The air-conditioning sofa 90C also has a temperature sensor 913 (913C, 913D) provided midway along the return pipe 911 (911C, 911D). The temperature sensor 913 is connected to the valve 912. Thus, the opening of the valve 912 is controlled using temperature information measured by the temperature sensor 913 inside the return pipe 911, thereby adjusting the flow rate of cold water or hot water passing through the outflow pipe 910. Thus, the temperature of the cold water or hot water flowing into the tube 917 of the panel unit 915 is adjusted to a desired temperature.

[0119] (Explanation of each air supply method using indirect well water) <Ceiling panel unit 40> The air conditioning system 1 includes a ceiling panel unit 40. FIG. 14 shows an example of the outline of the ceiling panel unit 40. The ceiling panel unit 40 is installed above the ceiling of the space to be air-conditioned. The ceiling panel unit 40 includes a flat coil 401 and a main pipe 402 through which water that has exchanged heat with well water of the indirect system passes.

[0120] The ceiling panel unit 40 also includes a panel body 405 (an example of a "radiating panel" of the present invention) that contacts the coil 401. The size of the panel body 405 is 600 mm x 600 mm (an example of a "predetermined value of the size of the radiating panel" of the present invention). The panel body 405 is made of aluminum, for example.

[0121] The size of such panel body 405 is the same as the standard size of commercially available ceiling panels, so that commercially available ceiling panels installed in existing buildings can be easily replaced with panel body 405.

[0122] 14, three panel bodies 405 are arranged in series (panel bodies 405A, 405B, and 405C). Similarly, three panel bodies 405 arranged in series are arranged in parallel (panel bodies 405D, 405E, and 405F). Ceiling panel unit 40 also includes piping 403 that branches off from main piping 402 and supplies water to coil 401 in contact with panel body 405A. piping 403 also connects the end of the flow tube that forms coil 401 in contact with one panel body 405 to the end of the flow tube that forms coil 401 in contact with another panel body 405, so that the flow tubes that form each coil 401 are arranged in series.

[0123] Also, a valve 406 is provided in pipe 403 immediately after branching off from main pipe 402 to adjust the amount of water flowing inside pipe 403. Here, the opening degree of valve 406 may be controlled according to the temperature of the air-conditioned space in which ceiling panel unit 40 is installed, or the valve may be controlled so that it remains open. Also, the opening degree of valve 406 is controlled for each group of six panel bodies 405A-406F as shown in FIG. 14.

[0124] The ceiling panel unit 40 also includes a carbon sheet 404. The carbon sheet 404 is provided so as to cover the coil 401. By providing the carbon sheet 404 in this manner, contact between the coil 401 and the panel main body 405 is promoted. This promotes heat transfer from the surface of the coil 401 to the panel main body 405. Furthermore, the heat from the surface of the coil 401 is also transferred to the panel main body 405 via the carbon sheet 404. This means that the heat of the water flowing inside the coil 401 is efficiently transferred to the panel main body 405.

[0125] <dcfcu20b> Furthermore, a DCFCU20B of the same type as the DCFCU20 described above is placed near the ceiling panel unit 40. Therefore, the piping for circulating water from the heat exchanger 42 to the coil 203 of the DCFCU20B is shared with the piping for circulating water from the heat exchanger 42 to the coil 401 of the ceiling panel unit 40. Therefore, the coil 203 of the DCFCU20B can pass water that has exchanged heat with well water of the indirect system, just like the ceiling panel unit 40.

[0126] <Floor Panel Unit 45> The air conditioning system 1 also includes a floor panel unit 45. Fig. 15 illustrates an overview of the floor panel unit 45. Fig. 15(A) is an example of an overview of the floor panel unit 45. Fig. 15(B) is an example of a partial enlarged view of a joint portion. The floor panel unit 45 is installed under the floor inside the building and transfers heat to the floor surface.

[0127] As shown in FIG. 15, the floor panel unit 45 includes a metal panel body 451. The size of the panel body 451 is, for example, 500 mm x 500 mm. The lower panel unit 45 includes header pipes 452 (452A, 452B). Two header pipes 452 are provided along one side of the rear surface of the panel main body 451.

[0128] The floor panel unit 45 also includes a plurality of tubes 453. The tubes 453 connect one header pipe 452A to the other header pipe 452B. The tubes 453 are provided so as to contact the rear surface of the panel main body 451. The lengths of the tubes 453 are approximately the same.

[0129] Floor panel unit 45 also includes piping 454A through which water that has exchanged heat with well water in the indirect system passes, and piping 454B through which water that has passed through tube 453 returns to the circulation system. Floor panel unit 45 also includes joints 455 (455A, 455B) that connect piping 454 (454A, 454B) to header piping 452 (452A, 452B). Here, joints 455A, 455B are provided at the respective ends of header piping 452A, 452B located in the central portion of panel main body 451. Furthermore, as shown in FIG. 15(B), floor panel unit 45 is disposed under the floor with joints 455A, 455B inclined at approximately 45 degrees relative to panel main body 451.

[0130] The floor panel unit 45 also includes a carbon sheet 456. The carbon sheet 456 is provided so as to cover the tubes 453. By providing the carbon sheet 456 in this manner, contact between the tubes 453 and the panel main body 451 is promoted. This promotes heat transfer from the surfaces of the tubes 453 to the panel main body 451. Furthermore, heat from the surfaces of the tubes 453 is also transferred to the panel main body 451 via the carbon sheet 456. This means that heat from the water flowing inside the tubes 453 is efficiently transferred to the panel main body 451.

[0131] <Water source heat pump unit 50> The air conditioning system 1 also includes a water-source heat pump unit 50 downstream of the ceiling panel unit 40, as shown in FIG. 1. FIG. 16 illustrates an overview of the water-source heat pump unit 50. FIG. 16(A) shows an overview during cooling operation. FIG. 16(B) shows an overview during heating operation. The water-source heat pump unit 50 has a heat pump cycle within the unit. The water-source heat pump unit 50 may be, for example, a heat pump unit manufactured by PMAC.

[0132] More specifically, as shown in FIG. 16(A), the water-source heat pump unit 50 includes a water heat exchanger 521, an air heat exchanger 522, a compressor 523, and circulation piping through which a heat medium circulates among these components. The water-source heat pump unit 50 also includes an expansion valve 524 in the circulation piping between the water heat exchanger 521 and the air heat exchanger 522. The heat-source water flowing into the coil of the water heat exchanger 521 is water that has absorbed heat in the ceiling panel unit 40B (described below). The heat medium that has exchanged heat with the heat-source water in the water heat exchanger 521 passes through the expansion valve 524, becoming low-temperature and low-pressure. The low-temperature, low-pressure heat medium then flows into the air heat exchanger 522. The air drawn in from the room exchanges heat with the heat medium in the air heat exchanger 522, thereby cooling the air. The air cooled in the air heat exchanger 522 is circulated within the room. The water-source heat pump unit 50 is equipped with a fan 525 that draws air from inside the room and blows the air out into the room. The water-source heat pump unit 50 also includes a filter 526 located before the air heat exchanger 522 that removes impurities from the air drawn in by the fan 525.

[0133] Furthermore, the heat medium that has exchanged heat with the air in the air heat exchanger 522 flows into the compressor 523. Then, the heat medium that has been compressed in the compressor 523 flows into the water heat exchanger 521 again.

[0134] The water heat source heat pump unit 50 also includes a four-way valve 527 that connects the piping between the air heat exchanger 522 and the compressor 523 and the piping between the water heat exchanger 521 and the compressor 523. Controlling the opening of the four-way valve 527 changes the circulation direction of the heat medium circulating through the water heat exchanger 521, the air heat exchanger 522, and the compressor 523. That is, controlling the opening of the four-way valve 527 allows the heat medium flowing out of the water heat exchanger 521 to be compressed by the compressor 523 without passing through the expansion valve 524, in the opposite direction to the direction shown in FIG. 16(A) (FIG. 16(B)). The compressed heat medium can then be caused to flow into the air heat exchanger 522. Thus, the air drawn in from the room is heated by heat exchange between the air heat exchanger 522 and the heat medium. In this way, by controlling the opening degree of the four-way valve 527, the water heat source heat pump unit 50 can be operated in cooling mode (FIG. 16(A)) and heating mode ( 16(B)).

[0135] <Cool Spot Device 55> The air conditioning system 1 also includes a cool spot device 55. Fig. 17 shows a schematic diagram of the cool spot device 55. Fig. 17(A) is an example of an external perspective view of the cool spot device 55. Fig. 17(B) is an example of a top view of the cool spot device 55. Fig. 17(C) is an example of a bottom view of the cool spot device 55.

[0136] 17, cool spot device 55 includes main body 501. Main body 501 has a semi-cylindrical outer shape and has a hollow interior. The dimensions of main body 501 are, for example, approximately 2000 mm in height, 500 mm in width, and 200 mm in depth.

[0137] Cool spot device 55 also includes door 502. Door 502 is provided on top of main body 501 as shown in FIG. 17(B). The right end of door 502 is connected to main body 501 via a hinge or the like. Door 502 is opened by pulling the left end toward you. Opening door 502 in this manner allows maintenance of components fixed inside main body 501. In addition, the exterior surface of door 502 is painted with ink that changes color depending on the temperature. The ink is, for example, METAMO (registered trademark) manufactured by PILOT Corporation.

[0138] Furthermore, main body 501 and door 502 of cool spot device 55 are provided with air outlets 503 and 504, respectively, which communicate with the cavity inside main body 501. Air outlets 503 and 504 are circular, and for example, three air outlets 503 and 504 are provided along the height direction. Note that air outlets 503 and 504 overlap when door 502 is closed.

[0139] Cool spot device 55 also includes DC (direct current) fan 505 inside main body 501 at the position of air outlet 503. DC fan 505 is connected to outlet 506 at the installation location. As the blades of DC fan 505 rotate, air inside main body 501 is supplied to the space to be air-conditioned via air outlets 503 and 504.

[0140] Cool spot device 55 also includes button 507. Button 507 is provided on the exterior surface of door 502. Button 507 is connected to a switch (not shown) that controls the rotation of the blades of DC fan 505. The switch is provided with a timer that automatically stops the blades of DC fan 505 when a predetermined time has elapsed since the blades started to rotate.

[0141] The cool spot device 55 also has an oval duct 508 at the top. The oval duct 508 communicates with the internal cavity of the main body 501. The oval duct 508 also communicates with the piping through which the cold air generated in the water-source heat pump unit 50 passes. The inner diameter of the oval duct 508 is, for example, about 150 mm.

[0142] The cool spot device 55 also includes an air volume adjustment damper 509. The air volume adjustment damper 509 is provided in a pipe before the oval duct 508 and through which the cool air generated in the water heat source heat pump unit 50 passes. The amount of cool air passing through the oval duct 508 is adjusted by controlling the opening degree of the valve of the air volume adjustment damper 509. The air volume adjustment damper 509 is manual, but may also be electrically operated.

[0143] 17(C), the cool spot device 55 has an opening 510 on the bottom surface thereof. The opening 510 is an opening where an anchor for fixing the cool spot device 55 can be installed.

[0144] (Overall system configuration) <Direct line> Next, an example of the overall configuration of the air conditioning system 1 formed from the above air supply means is shown. The air conditioning system 1 includes a pumping water tank 3. The pumping water tank 3 temporarily stores well water pumped up by a well water pumping pump 2 for a short period of time. The well water pumping pump 2 also adjusts the amount of well water pumped up from the well depending on the water level in the pumping water tank 3.

[0145] The air conditioning system 1 also includes a well water supply pump 4. The well water supply pump 4 pumps well water stored in the pumped water tank 3. Here, the well water supply pump 4 adjusts the amount of well water to be pumped depending on the set mode.

[0146] The air conditioning system 1 also includes a heat exchanger 5 (an example of the "heat exchanger" of the present invention). At least a portion of the well water sent 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.

[0147] The air conditioning system 1 also includes an air-cooled chiller 110 and a heat exchanger 22. The chilled water supplied to the primary side of the heat exchanger 22 is generated by the air-cooled chiller 110.

[0148] Meanwhile, on the secondary side of the heat exchanger 5, an outside air processing unit 60, a DCFCU 20, a desk 30, and an air-conditioned sofa 90 are arranged. Circulation piping is provided between each of these air supply means and the heat exchanger 5 and heat exchanger 22, through which chilled water circulates. Furthermore, a counter air-conditioner 10 is connected downstream of the desk 30.

[0149] The air conditioning system 1 also includes a direct supply system secondary pump 21 on the secondary side of the heat exchanger 5. When the direct supply system secondary pump 21 operates, it pressure-feeds the water that has passed through the outside air processor 60, DCFCU 20, desk 30, air-conditioned sofa 90, and counter air conditioner 10 to the secondary side of the heat exchanger 5. The water that flows into the secondary side of the heat exchanger 5 is cooled by heat exchange with well water in the direct system.

[0150] The cooled water then flows into the secondary side of the heat exchanger 22. In the heat exchanger 22, the water exchanges heat with cold water sent from the chiller 110. In this manner, the water that has passed through the outside air processing unit 60, the DCFCU 20, the desk 30, the air-conditioned sofa 90, and the counter air-conditioner 10 is cooled.

[0151] The air conditioning system 1 also includes a pump 23. The pump 23 is connected to the secondary side of the heat exchanger 22. When the pump 23 is operated, the water cooled in the heat exchanger 22 is circulated again to the outside air processing unit 60, the DCFCU 20, the desk 30, the air-conditioned sofa 90, and the counter air-conditioner 10.

[0152] <Indirect system> The air conditioning system 1 also includes a water tank 9. The water tank 9 is installed, for example, under the floor of the space to be air-conditioned. At least a portion of the well water sent from the well water supply pump 4 flows into the water tank 9 and is stored therein. The water tank 9 also includes a heat storage tank 11 that stores the well water for storing heat for a predetermined period (for example, overnight), and a return tank 12 that stores the well water for returning it to the return well.

[0153] Here, the well water sent from the well water supply pump 4 flows into the heat storage tank 11. The well water stored in the heat storage tank 11 absorbs heat from the surrounding atmosphere and the water return tank 12 and stores it. The air conditioning system 1 also has a valve 8 for adjusting the amount of inflow. The well water flowing into the water return tank 12 includes well water that has been sent from the well water supply pump 4 to the heat exchanger 5 and has exchanged heat with water on the secondary side in the heat exchanger 5. The air conditioning system 1 also has a valve 7 for adjusting the amount of well water flowing from the heat exchanger 5 into the water return tank 12.

[0154] The air conditioning system 1 also includes a well water heat storage pump 13 that pumps up and delivers well water that has been stored and has stored heat in the heat storage tank 11. The air conditioning system 1 also includes a heat exchanger 14 (an example of the "heat exchanger" of the present invention) into whose primary side the well water delivered from the well water heat storage pump 13 flows.

[0155] The air conditioning system 1 also includes a valve 15 on the primary side of the heat exchanger 14 that adjusts the amount of well water returning from the heat exchanger 14 to the return water tank 12. The air conditioning system 1 also includes a valve 16 that adjusts the amount of well water returning to the return water tank 12 that is pumped up by the well water heat storage pumping pump 13 and mixed with the well water flowing from the heat storage tank 11 to the primary side of the heat exchanger 14.

[0156] The air conditioning system 1 also includes a heat exchanger 42. Chilled water supplied to the primary side of the heat exchanger 42 is generated by a chiller 110.

[0157] Meanwhile, the ceiling panel unit 40, floor panel unit 45, and DCFCU 20B are arranged on the secondary side of heat exchanger 42. In addition, a water-source heat pump unit 50 is connected downstream of ceiling panel unit 40. Circulation piping is provided between each of these air supply means and heat exchanger 14 and heat exchanger 42, allowing water to circulate.

[0158] The air conditioning system 1 also includes a heat storage secondary pump 41 on the secondary side of the heat exchanger 14. When the heat storage secondary pump 41 operates, water that has passed through the ceiling panel unit 40, the floor panel unit 45, the DCFCU 20B, and the water-source heat pump unit 50 is pressure-fed to the secondary side of the heat exchanger 14. The water that has flowed into the secondary side of the heat exchanger 14 is cooled by heat exchange with well water in the indirect system.

[0159] The cooled water then flows into the secondary side of heat exchanger 42. In heat exchanger 42, it exchanges heat with cold water sent from chiller 110. In this manner, the water that has passed through ceiling panel unit 40, floor panel unit 45, DCFCU 20B, and water-source heat pump unit 50 is cooled.

[0160] The air conditioning system 1 also includes a pump 43. The pump 43 is provided at the outlet on the secondary side of the heat exchanger 42. When the pump 43 is operated, the water cooled in the heat exchanger 42 is pumped through the ceiling panel unit 40, the floor panel unit 45, the DCFCU 20B, and the water It is circulated back to the heat source heat pump unit 50 .

[0161] The air conditioning system 1 also includes a well water return pump 17. The well water return pump 17 sends well water stored in the heat storage tank 11 to the return well, thereby adjusting the starting water level of the water tank 9 so that drainage of the water tank 9 is completed by the time the well water is stored in the heat storage tank 11 and heat storage begins.

[0162] (Example of arrangement of each air supply means) Fig. 18 shows an example of the layout of the air supply means described above. As shown in Fig. 18, ceiling panel units 40A are installed in groups of six on the ceiling of an interior zone 106 in the center of a room inside the building. Ceiling panel unit 40B is installed on the ceiling of a perimeter zone 107 on the window side. The perimeter zone 107 on the window side faces south. A floor panel unit 45 is installed under the floor of the perimeter zone 107.

[0163] As shown in Figure 18, a DCFCU 20 is also installed on the ceiling of the room. However, the DCFCU 20B, which is placed near the ceiling panel unit 40A, uses the same piping system as the ceiling panel unit 40, as described above. A desk 30 is also installed in the interior zone 106. A water-source heat pump unit 50 is installed inside a small room in the room. A cool spot device 55 is installed in the hallway next to the room where the water-source heat pump unit 50 is installed.

[0164] FIG. 19 shows another example of the layout of the air supply means described above. As shown in FIG. 19, the outdoor air processor 60 is provided at the entrance 18 inside the building. Although not shown in FIG. 19, a duct unit 70 such as that shown in FIG. 9 is provided in the air supply path of the outdoor air processor 60. An air-conditioned sofa 90 (air-conditioned sofa 90A or air-conditioned sofa 90C) is provided on the floor of the entrance 18. The entrance 18 has an open ceiling, and the counter air-conditioner 10 is provided on a counter 19 provided on the second floor of the open ceiling. An aquarium 9 is provided under the floor of the entrance 18.

[0165] (Example of daytime operation) <Well water supply pump 4> Next, we will explain an example of the operation of the air conditioning system 1. 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 up from a well and sent from the well water supply pump 4 to the primary side of the heat exchanger 5 is adjusted so that the outlet temperature A (see FIG. 1) on the secondary side of the heat exchanger 5 becomes a set value (for example, about 17 degrees).

[0166] Therefore, the well water supplied from the well water supply pump 4 to the primary side of the heat exchanger 5 is, for example, 500 L / min. The temperature of the supplied well water at the primary side inlet of the heat exchanger 5 is, for example, about 16 degrees, and the temperature of the well water at the primary side outlet of the heat exchanger 5 is, for example, about 23 degrees.

[0167] During the day, valve 6 provided in the pipe through which well water passes from well water supply pump 4 to heat exchanger 5 is opened. On the other hand, valve 8 provided in the pipe through which well water passes from well water supply pump 4 to heat storage tank 11 is closed.

[0168] (Direct well water system) <Direct supply system secondary pump 21> In the daytime mode, the direct supply system secondary pump 21 arranged on the secondary side of the heat exchanger 5 and the heat exchanger 22 supplies air to the heat exchanger 5 and the secondary side air supply means (outside air processor 60, DC The amount of chilled water circulated between FCU 20, desk 30, air-conditioned sofa 90, and counter air conditioner 10 is set as follows: That is, for example, direct supply system secondary pump 21 operates so that the secondary side inlet temperature of heat exchanger 5 is about 24°C and the secondary side outlet temperature of heat exchanger 5 is about 17°C.

[0169] <Outside air processor 60> As described above, the secondary water cooled in the heat exchanger 5 by the operation of the direct supply system secondary pump 21 is further cooled in the heat exchanger 22 by heat exchange with the cold water produced in the chiller 110. The cooled secondary water is then supplied to the heat exchanger 604 (see FIG. 8) of the outside air processor 60. As the cooled water flows through the heat exchanger 604 in this way, latent heat is removed from the outside air passing over the surface of the heat exchanger 604. The dehumidified and cooled outside air is then supplied to the air-conditioned space shown in FIG.

[0170] In the above-described outside air treatment unit 60, the outside air passing through the surface of the heat exchanger 604 is heated to a high temperature when dehumidified in the desiccant rotor 602. Therefore, it is considered that a large amount of energy is required to cool the outside air in the heat exchanger 604. However, in this embodiment, the cold water flowing through the coil of the heat exchanger 604 is cooled by heat exchange with well water in the direct system. Therefore, it can be said that the energy required to cool the outside air in the heat exchanger 604 is reduced by using well water. Furthermore, compared to well water in the indirect system, well water in the direct system is not stored for a long time and does not accumulate heat, so its temperature is lower. Therefore, low-temperature water passes through the coil of the heat exchanger 604. Therefore, it is considered that the degree of reduction in the energy required to cool the outside air in the heat exchanger 604 is significant.

[0171] <dcfcu20> In addition, water cooled on the secondary side of heat exchanger 5 and heat exchanger 22 and pumped by pump 23 is also supplied to coil 203 (see FIG. 2) that forms DCFCU 20. In DCFCU 20, air blown out from fan 201 is rectified by baffle plate 202 and directed toward coil 203 through which cold water passes. The blown air is cooled as it passes over the surface of coil 203. The cold air then passes through gaps between the members that form coil 203 and is supplied to the space to be air-conditioned as shown in FIG. 18 through holes 205 provided in face panel 204.

[0172] <Desk 30> The water cooled on the secondary side of heat exchanger 5 and heat exchanger 22 and pumped by pump 23 is also supplied to coil 307 forming DCFCU 20A that is retrofitted to desk 30 (see FIG. 4). Here, FIG. 20 shows an example of a flowchart of the operation of DCFCU 20A. Also, FIG. 21 shows an example of an outline of the flow of supply air when DCFCU 20A is operating.

[0173] 20, in step S101, the wireless module 312 receives an operation request signal requesting operation of the DCFCU 20A from a terminal such as a smartphone owned by the seat occupant (S101). Then, in step S102, the wireless module 312 transfers the operation request signal to the control chip 311 (S102).

[0174] Then, in step S103, the control chip 311 generates a control signal to rotate the blades of the fan 303 in accordance with the operation request signal. This causes the blades of the fan 303 to rotate. As the blades of the fan 303 rotate, air is drawn into the fan 303 from the space under the legs of the seated occupant through the air inlet 341. Then, as shown in FIG. 21 , air is blown out from the air outlet 309 of the fan 303 in the direction in which the seated occupant is sitting (S103).

[0175] Here, cold water cooled in the heat exchanger 5 and the secondary side of the heat exchanger 22 passes through the inside of 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 the end of the flow tube member 371 that forms the lower part of the coil 307. Then, while exchanging heat with the air blown out from the fan 303, the cold water flows into the flow tube member 371 that forms the upper part of the coil 307. Then, the cold water flows out from an outlet 374 provided at the end of the flow tube member 371 that forms the upper part of the coil 307. In other words, the temperature of the cold water flowing inside the flow tube member 371 that forms the lower part of the coil 307 is low, and the temperature of the cold water increases as it moves upward in the coil 307.

[0176] Here, at least a portion of the air blown out from the fan 303 strikes the back surface of the top plate 31 and then travels along the outer surface 372 of the coil 307. Therefore, the blown air exchanges heat uniformly with the coil 307 and is cooled. In addition, the space in the direction of travel of the blown air is gradually blocked by the outer surface 372, so the flow of the blown air is smooth. Therefore, pressure loss of the blown air is suppressed. In addition, the cooled blown air passes through the gaps between the flow tube members 371.

[0177] The blown air that has passed through the gaps between the flow pipe members 371 reaches a step portion where the accommodation section 304 and the duct 305 communicate with each other. Here, an inclined surface 306 is provided at the step portion. Therefore, the blown air that has reached the step portion flows naturally and efficiently along the inclined surface 306 into the inside of the duct 305. The blown air then passes through the duct 305 and is supplied to a seated occupant in the air-conditioned space shown in FIG. 18 via the air supply port 320. Here, the DCFCU 20A may be provided with a rectifying member such as a louver at the air supply port 320, and the air supplied from the air supply port 320 may be adjusted so as to be concentrated on a specific part of the occupant's body, such as the neck.

[0178] Here, DCFCU20A is remotely controlled from a terminal such as a smartphone owned by the seat occupant, but DCFCU20B, which is installed in the ceiling, may also be remotely controlled from a terminal such as a smartphone owned by the seat occupant, just like DCFCU20A.

[0179] <Counter Air Conditioner 10> Furthermore, water passing through the desk 30 (flow pipe member 371 of the DCFCU 20A) flows into the pipe 102A of the countertop air-conditioner 10 (see FIG. 7). The water passing through the desk 30 has a temperature of approximately 21-22°C. When the manual valves 104A and 104B are open, the water flowing through the pipe 102A passes through the chilled water supply pipe 101A and the chilled water return pipe 101B. As a result, cold is radiated from the outer surfaces of the chilled water supply pipe 101A and the chilled water return pipe 101B. The opening of the solenoid valve 105 is controlled to adjust the amount of water flowing through the chilled water return pipe 101B so that the temperature of the water is approximately 20°C. The water passing through the chilled water return pipe 101B passes through the pipe 102B and is then pumped to the secondary side of the heat exchanger 5.

[0180] On the other hand, when the manual valves 104A and 104B are closed, the water flowing through the pipe 102A does not pass through the cold water supply pipe 101A and the cold water return pipe 101B. When the hot water flows through the pipe 102A and the manual valves 104C and 104D are open, the hot water flows through the hot water supply pipe 101C and the hot water return pipe 101D. Therefore, hot heat is radiated from the outer surfaces of the hot water supply pipe 101C and the hot water return pipe 101D. Such hot water is generated, for example, by using heat generated by biomass CHP (Combined Heat and Power). The temperature of the hot water is, for example, about 60 degrees.

[0181] The manual valves 104 may be switched, for example, by closing the manual valves 104C and 104D and opening the manual valves 104A and 104B just before summer arrives. Conversely, the manual valves 104A and 104B may be closed and the manual valves 104C and 104D may be opened just before winter arrives.

[0182] <Air-Conditioned Sofa 90A> The water cooled on the secondary side of heat exchanger 5 and heat exchanger 22 and pumped by pump 23 is also supplied to coil 909A via outgoing pipe 910A of air-conditioned sofa 90A (see FIG. 12). It is assumed that valve 912A provided midway along outgoing pipe 910A is open. The temperature of the water is, for example, approximately 18°C. Therefore, the outside air passing over the outer surface of coil 909A is cooled. Cool air is then supplied from opening 918A of seat 901A. The water that has passed through coil 909A passes through return pipe 911A and is pumped to the secondary side of heat exchanger 5.

[0183] When valve 912A on outflow pipe 910A is closed, no water flows into coil 909A. When valve 912B on outflow pipe 910B is open, hot water flows into coil 909B. This hot water is generated, for example, using heat generated by biomass CHP. Therefore, the outside air passing over the outer surface of coil 909B is heated. Then, hot air is supplied from opening 918B of seat 901B. The temperature of the hot water is, for example, about 60 degrees.

[0184] <Air-Conditioned Sofa 90C> The water cooled on the secondary side of the heat exchanger 5 and the heat exchanger 22 and pumped by the pump 23 is also supplied to the tube 917C via the delivery pipe 910C of the air-conditioned sofa 90C (see FIG. 13). It is assumed that the valve 912C provided midway along the delivery pipe 910C is open. The temperature of the water is, for example, about 18°C. Therefore, cold is transferred to the panel main body 916C in contact with the tube 917C. Therefore, cold is also transferred to the seating portion 903C in contact with the panel main body 916C. Therefore, cold is transferred to the user from the seat surface 901C of the seating portion 903C. The water that has passed through the tube 917C then passes through the return pipe 911C and is pumped to the secondary side of the heat exchanger 5.

[0185] When valve 912C on outflow pipe 910C is closed, water does not flow into tube 917C. When valve 912D on outflow pipe 910D is open, hot water flows into tube 917D. This hot water is generated, for example, by using heat generated by biomass CHP. Therefore, hot heat is transferred to panel main body 916D in contact with tube 917D. Therefore, hot heat is also transferred to seating portion 903D in contact with panel main body 916D. Therefore, hot heat is transferred to the user from seat surface 901D of seating portion 903D. The temperature of the hot water is, for example, about 60 degrees.

[0186] (Indirect well water system) <Well water heat storage pump 13> The air conditioning system 1 not only uses well water by sending it directly to the heat exchanger 5 using the well water supply pump 4, but also uses well water that has been temporarily stored in the water tank 9 and has its temperature increased by heat storage. The amount of well water pumped from the heat storage tank 11 by the well water heat storage pump 13 and sent to the primary side of the heat exchanger 14 is adjusted so that the secondary side outlet temperature B (Figure 1) of the heat exchanger 14 is a set value (e.g., approximately 19°C). When the secondary side outlet temperature of the heat exchanger 14 is set to this 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 this case, the primary side inlet temperature of the sent well water is, for example, approximately 18°C, and the primary side outlet temperature of the well water is, for example, approximately 21°C.

[0187] <Heat storage secondary pump 41> The heat storage system secondary pump 41 is connected to the heat exchanger 14 and the secondary side air supply means of the heat exchanger 14 (ceiling panel unit 40, floor panel unit 45, DCFCU 20B, and water heat source heat The amount of cold water circulated between the heat exchanger 14 and the pump unit 50 is set as follows: That is, the heat storage secondary pump 41 operates so that the secondary side inlet temperature of the cold water of the heat exchanger 14 is, for example, about 22°C, and the secondary side outlet temperature of the heat exchanger 14 is, for example, about 19°C.

[0188] <Ceiling panel unit 40> At least a portion of the water cooled in the heat exchanger 14 and the secondary side of the heat exchanger 42 is further cooled in the heat exchanger 42 by heat exchange with the cold water produced in the chiller 110. The water cooled in the heat exchanger 42 is then supplied to the main pipe 402 provided in the ceiling panel unit 40 at a temperature of, for example, about 19 degrees (see FIG. 14).

[0189] Then, the water flowing through main pipe 402 flows into coil 401 via pipe 403 branching from main pipe 402. Therefore, panel body 405 is cooled by heat exchange with the surface of coil 401. Then, cold heat is radiated from cooled panel body 405 to the space to be air-conditioned (see FIG. 18). Therefore, water passing through coil 401 absorbs the sensible heat absorbed by panel body 405. Also, as shown in FIG. 14, water flows from coil 401 in contact with panel body 405A to coil 401 in contact with panel body 405B, panel body 405C, panel body 405D, panel body 405E, and panel body 405F in this order.

[0190] Here, as shown in Figure 18, the ceiling panel unit 40A installed on the ceiling of the interior zone 106 controls the opening of the valve 406 installed in the piping 403 at intervals, thereby adjusting the temperature of the panel body 405 to, for example, between 19 degrees and 24 degrees.

[0191] Furthermore, a temperature sensor (not shown) is provided in the interior zone 106. The opening of the valve 406 is controlled in accordance with the temperature measured by the temperature sensor. When the temperature in the space to be air-conditioned is close to the desired temperature, the opening of the valve 406 is closed, thereby stopping the inflow of water into the coil 401. This makes it possible to suppress the radiation of cold heat from the panel body 405. The opening of the valve 406 is controlled for each set of six ceiling panel units 40, as described above.

[0192] 18, ceiling panel unit 40B installed on the ceiling of perimeter zone 107 keeps valve 406 open at all times. By controlling valve 406 in this manner, water always flows through coil 401 of ceiling panel unit 40B installed on the ceiling of perimeter zone 107.

[0193] <Water source heat pump unit 50> The temperature of the water that has passed through coil 401 of ceiling panel unit 40B, which is disposed on the ceiling of perimeter zone 107, is approximately 22-23 degrees Celsius. Therefore, this water is pumped into the coil of water heat exchanger 521 provided in water-source heat pump unit 50. In water heat exchanger 521, heat is exchanged between the water that has passed through ceiling panel unit 40B and the heat medium (FIG. 16(A)). The heat medium then flows into air heat exchanger 522. Air drawn from the room by fan 525 exchanges heat with the heat medium in air heat exchanger 522, cooling the air. As a result, cool air is supplied to the air-conditioned space shown in FIG. 18.

[0194] <Cool Spot Device 55> The cold air generated in the water-source heat pump unit 50 is also supplied to a cool spot device 55 as shown in Fig. 18. More specifically, the air volume of the cold air generated in the water-source heat pump unit 50 is, for example, 1250 m3 / h. Then, by controlling the valve opening of the air volume adjusting damper 509 of the cool spot device 55 to a predetermined opening, cool air with an air volume of, for example, 200 m 3 / h flows into the cavity inside the main body 501 .

[0195] When the user presses button 507, the blades of DC fan 505 rotate, and cool air is supplied directly to the user through outlets 503 and 504. When the user presses button 507 again, the rotation of the blades of DC fan 505 stops, and the supply of cool air stops. Note that even if the user does not press button 507 again, the rotation of the blades of DC fan 505 is stopped by a timer after a predetermined time has elapsed. Furthermore, air volume adjustment damper 509 is opened in the summer and closed in the winter.

[0196] <dcfcu20b> The water cooled in the heat exchanger 14 and the secondary side of the heat exchanger 42, for example at a temperature of about 19 degrees, also flows into the coil 203 of the DCFCU 20B arranged near the ceiling panel unit 40A in the interior zone 106 (see FIG. 18). Here, the water supplied from the secondary side of the heat exchanger 42 to the DCFCU 20B passes through the same piping as the water supplied from the secondary side of the heat exchanger 42 to the ceiling panel unit 40A, as described above.

[0197] In the DCFCU 20B, the 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 over the surface of the coil 203. The cold air then passes through the gaps between the members that form the coil 203 and is supplied to the space to be air-conditioned through the holes 205 provided in the face panel 204.

[0198] <Floor Panel Unit 45> The water cooled in heat exchanger 14 and heat exchanger 42, for example at a temperature of about 19°C, is also supplied to pipe 454A of floor panel unit 45 installed under the floor of perimeter zone 107 (see FIG. 18). The water flowing through pipe 454A then flows into header pipe 452A via joint 455A. Here, joint 455A is located in the center of panel main body 451. Therefore, the water that flows into header pipe 452A remains in header pipe 452A for a predetermined time before flowing into each tube 453.

[0199] Thereafter, the water flowing out of header pipe 452A passes through the inside of tube 453 and flows into the other header pipe 452B. Therefore, heat exchange occurs between the surface of tube 453 and the back surface of panel body 451, thereby cooling panel body 451. Then, cold heat is radiated from the surface of panel body 451. In addition, the heat radiated from the surface of tube 453 is transferred to panel body 451 via carbon sheet 456. Therefore, the heat of the water flowing inside tube 453 is efficiently transferred to panel body 451. In addition, the water passing through tube 453 absorbs the sensible heat absorbed by panel body 451.

[0200] Furthermore, the water flowing out of each of the tubes 453 remains in the header pipe 452B for a predetermined period of time because the joint 455B is disposed in the center of the panel body 451. The water that passes through the header pipe 452B then flows into the pipe 454B via the joint 455B. The water that has flowed into the pipe 454B is then circulated to the secondary side of the heat exchanger 14.

[0201] In the above example, water that has been heat exchanged with well water of an indirect system is passed through the tube 453 of the floor panel unit 45 installed in the south-facing perimeter zone 107. However, if the floor panel unit 45 is installed in the north-facing perimeter zone 107 during winter, When floor panel unit 45 is installed, hot water may be passed through tube 453. Such hot water is generated, for example, by using heat generated by a biomass CHP. The hot water is then passed through tube 453 via pipe 454A. Such floor panel unit 45 can prevent cold drafts from occurring in perimeter zone 107 facing north.

[0202] (Example of nighttime operation) <Well water supply pump 4> In the night mode, a valve 6 provided in a pipe through which well water passes when it is supplied from the well water supply pump 4 to the heat exchanger 5 is closed. On the other hand, a valve 8 provided in a pipe through which well water passes from the well water supply pump 4 toward the thermal storage tank 11 is opened. The well water supply pump 4 sends well water toward the thermal storage tank 11 until a set amount of well water is stored in the thermal storage tank 11. Here, the amount of well water stored in the thermal storage tank 11 may be determined, for example, based on the weather (temperature, humidity forecast, etc.) for the next day. Here, the water tank 9 containing the thermal storage tank 11 is installed under the floor of the air-conditioned space as shown in FIG. 19. Therefore, the well water stored in the thermal storage tank 11 absorbs heat from the air-conditioned space during the night. In other words, the air-conditioned space shown in FIG. 19 is cooled by the well water stored in the thermal storage tank 11 at least during the night.

[0203] (Action and effect) <Air conditioning system 1 overall> According to the air conditioning system 1 as described above, well water is supplied to the primary side of the heat exchanger 5 by the well water supply pump 4. This well water is used to cool the water flowing into the secondary side of the heat exchanger 5. Therefore, according to the air conditioning system 1 as described above, the amount of heat required for the DCFCU 20B, desk 30 (DCFCU 20A), counter air conditioner 10, and outside air processing unit 60, which are arranged on the secondary side of the heat exchanger 5, to generate cool air is reduced.

[0204] Furthermore, according to the air conditioning system 1 described above, well water stored in the water tank 9 is supplied to the primary side of the heat exchanger 14. This well water is used to cool the water flowing into the secondary side of the heat exchanger. Therefore, according to the air conditioning system 1 described above, the amount of heat required for the ceiling panel unit 40, DCFCU 20B, floor panel unit 45, and water-source heat pump unit 50, which are arranged on the secondary side of the heat exchanger 14, to generate cold air or cold heat is reduced. This achieves energy savings.

[0205] Furthermore, the temperature of the well water pumped from the well by the well water pumping pump 2 and delivered as is is low. However, as mentioned above, there is a possibility that the amount of well water pumped by the well water pumping pump 2 may be limited. Therefore, it is conceivable that the amount of low-temperature well water will be limited. However, with the air conditioning system 1 described above, such low-temperature well water with a limited amount is allocated to the outside air processing unit 60, which performs latent heat treatment. Furthermore, such direct-line well water is allocated to the DCFCU 20, desk 30 (DCFCU 20A), counter air conditioner 10, and air-conditioned sofa 90, which individually supply cool air to the air-conditioned space. In other words, with the air conditioning system 1 described above, even if the amount of well water pumped from the well is restricted, it is possible to ensure that the latent heat is removed from the air-conditioned space and cooling is achieved. Furthermore, it is possible to meet the demands of individual users.

[0206] Furthermore, if the amount of well water pumped up is restricted, it is possible that the well water may not be able to absorb the heat generated in the space to be air-conditioned as desired. However, according to the air-conditioning system 1 described above, the well water stored in the water tank 9 at night is supplied to the primary side of the heat exchanger 14 during the day and is used to cool the water flowing into the secondary side of the heat exchanger 14. In other words, according to the air-conditioning system 1 described above, even if a large amount of heat is generated from the space to be air-conditioned during the day when the amount of well water pumped up is restricted, it is possible to respond to such a situation and operate the air-conditioning system. This is a system that can condition the target space as desired.

[0207] The well water supplied to the primary side of the heat exchanger 14 is water that has stored heat in the water tank 9. Therefore, the well water with an increased temperature exchanges heat with the water flowing into the secondary side in the heat exchanger 14. As a result, the water that has flowed into the secondary side exchanges heat with the well water in the heat exchanger 14, and the temperature (approximately 19°C) at which the water that has exchanged heat with the well water in the heat exchanger 14 flows into the ceiling panel unit 40, the water-source heat pump unit 50, the DCFCU20B, and the floor panel unit 45 becomes equal to or higher than the temperature (approximately 17°C) at which the water that has exchanged heat with the well water in the heat exchanger 5 flows into the DCFCU20, the desk 30 (DCFCU20A), the outside air processing unit 60, and the air-conditioned sofa 90.

[0208] However, the ceiling panel unit 40 is a unit in which the panel body 405 removes sensible heat from the air-conditioned space. The floor panel unit 45 is a unit in which the panel body 451 removes sensible heat from the floor. The DCFCU 20B is a unit in which the sensible heat is removed from the outside air passing over the surface of the coil 203. The water-source heat pump unit 50 is a device that can cool air using water at approximately 21–22°C as a heat medium. In other words, the ceiling panel unit 40, the water-source heat pump unit 50, the DCFCU 20B, and the floor panel unit 45 are devices that can generate cold air or cold heat using high-temperature water. In other words, in this air conditioning system 1, whether multiple air conditioning units are located in a location that uses direct well water or in an indirect well water system is determined based on the function of the air conditioning unit. Therefore, well water is used efficiently.

[0209] In addition, in this air conditioning system 1, a DCFCU 20 that uses well water from a direct system, a desk 30 (DCFCU 20A), a counter air conditioner 10, an outside air processing unit 60, and an air-conditioned sofa 90 are placed in the space to be air-conditioned. The well water that has accumulated heat and has increased in temperature is then used by the ceiling panel unit 40, the water-source heat pump unit 50, the DCFCU 20B, and the floor panel unit 45. By combining multiple air conditioning devices in this way, it is possible to maintain or increase the air conditioning effect of the space to be air-conditioned.

[0210] Furthermore, according to the above-described air conditioning system 1, well water is stored in the water tank 9 at night when the operation of the air conditioning system 1 is reduced. Furthermore, the water tank 9 is installed under the floor of the space to be air-conditioned, as shown in FIG. 19. Therefore, the well water stored in the water tank 9 can absorb and store the heat contained in the space to be air-conditioned. Therefore, it is possible to suppress the rise in temperature in the space to be air-conditioned even during the nighttime when the operation of the air conditioning system is reduced. Therefore, the air conditioning load of the space to be air-conditioned the next day is reduced. In other words, it can be said that the well water is being used effectively.

[0211] Furthermore, according to the above-described air conditioning system 1, even if the secondary-side water that exchanges heat with well water in heat exchanger 5 or heat exchanger 14 is not adjusted to the desired temperature, the water can be adjusted to the desired temperature because it exchanges heat with chilled or hot water supplied from chiller 110. Therefore, such air conditioning system 1 can suppress fluctuations in the temperature of the chilled water that flows out from the secondary side of heat exchanger 5 or the secondary side of heat exchanger 14 and is supplied to each air supply means that constitutes air conditioning system 1. Therefore, fluctuations in the temperature of the chilled air generated by each air supply means are suppressed. Therefore, chilled air with suppressed temperature fluctuations is supplied to the air-conditioned space, maintaining the comfort felt by the user in the air-conditioned space.

[0212] Furthermore, according to the above-described air conditioning system 1, the well water supply pump 4 adjusts the amount of well water sent to the water tank 9. Therefore, the well water stored in the water tank 9 absorbs heat from the surroundings of the water tank 9 (for example, the space to be air-conditioned shown in FIG. 19), and the degree of heat storage can be adjusted according to the environment.

[0213] <Action and effect of each air supply means> <Ceiling panel unit 40> Incidentally, when adjusting the temperature of a space to be air-conditioned using only ceiling panel unit 40, it is conceivable to install ceiling panel unit 40 on the entire surface of the ceiling. Then, it is conceivable to uniformly adjust the amount of water flowing through coil 401 in contact with ceiling panel unit 40.

[0214] However, in such a case, the power of pump 43, which transports the indirect system well water and the water that has undergone heat exchange in heat exchanger 14, increases. This makes it difficult to achieve energy savings. It is also difficult to change the flow rate of water flowing through coil 401 between interior zone 106 and perimeter zone 107. Furthermore, if the ceiling panel unit 40 is large enough to cover the entire surface of the space to be air-conditioned, it is difficult to incorporate it into a system ceiling. Furthermore, if the layout of the room changes, it is difficult to change the installation position of ceiling panel unit 40 without changing the building framework.

[0215] On the other hand, with the above-described ceiling panel unit 40, the opening degree of the valve 406 is controlled for each set of six ceiling panel units 40. This reduces the power required for the pump 43 that transports the indirect system well water and the water that has exchanged heat in the heat exchanger 14. This reduces the use of the well water stored in the water tank 9 that exchanges heat with that water in the heat exchanger 14. Therefore, although the above-described air conditioning system 1 also uses well water to generate cool air in other air conditioning devices such as the DCFCU 20B, it is possible to achieve energy savings by making effective use of well water even when multiple air conditioning devices are installed.

[0216] Furthermore, the ceiling panel unit 40 as described above is arranged in the same space as the DCFCU 20B (see FIG. 18). Therefore, cold air is also supplied to the space to be air-conditioned from the DCFCU 20B. Therefore, even if the temperature of the well water is high and the cold energy radiated from the panel body 405 is small, the space to be air-conditioned is cooled appropriately.

[0217] Furthermore, in the ceiling panel unit 40A installed in the interior zone 106, the opening degree of the valve 406 is controlled according to the measured temperature of the interior zone 106. Therefore, the amount of water flowing into the coil 401 for each small area in the room can be reduced. Therefore, the flow rate of the well water that exchanges heat in the heat exchanger 14 with the water flowing into the coil 401 can be reduced. Also, the power of the pump 43 that pressurizes the water flowing into the coil 401 can be reduced. Therefore, energy savings can be achieved by making effective use of the well water. It can also be said that each small area in the room can be individually air-conditioned.

[0218] Furthermore, the opening of valve 406 is controlled so that water always flows to coil 401 of ceiling panel unit 40B installed in perimeter zone 107. This makes it possible to suppress fluctuations in room temperature in perimeter zone 107, which is exposed to constant sunlight near a south-facing window during the day. Therefore, ceiling panel unit 40 as described above is a highly convenient device that can maintain a uniform temperature in the air-conditioned space even when the space has different air-conditioning load areas.

[0219] Furthermore, according to the ceiling panel unit 40 described above, the panel body 405 measures 600mm x 600mm. Six of them are arranged in a set in the order shown in Figure 14. Therefore, the ceiling panel unit 40 is a ceiling panel unit of a size that can be easily incorporated into a system ceiling. Furthermore, even if the layout of the room changes, the installation position of the ceiling panel unit 40 can be changed without changing the framework of the building. This reduces installation costs.

[0220] Furthermore, the ceiling panel unit 40 as described above shares a pipe for circulating water from the heat exchanger 42 and a pipe for circulating water from the heat exchanger 42 to the nearby DFCFU 20B. This also reduces installation costs.

[0221] <Floor Panel Unit 45> The floor panel unit 45 as described above can suppress fluctuations in room temperature in the perimeter zone 107, which is located near a south-facing window and is constantly exposed to sunlight during the day.

[0222] Furthermore, in the floor panel unit 45 described above, the lengths of the tubes 453 are approximately the same. Therefore, the frictional force that the water flowing through each of the tubes 453 receives from the inner walls of the tubes 453 is uniform. Therefore, the flow rate of the water flowing through each of the tubes 453 is approximately the same. Therefore, the panel body 451 is cooled uniformly. Therefore, the floor of the perimeter zone 107 as shown in FIG. 18 is cooled uniformly.

[0223] Furthermore, according to the above-described floor panel unit 45, water flowing into tube 453 remains in header pipe 452A for a predetermined period of time. Moreover, water flowing out from tube 453 remains in header pipe 452B for a predetermined period of time. This promotes cooling of panel main body 451 in contact with header pipes 452A and 452B.

[0224] <Water source heat pump unit 50> Furthermore, according to the air conditioning system 1 described above, the water flowing into the water heat exchanger 521 of the water-source heat pump unit 50 is water that has absorbed sensible heat from the panel body 405 in the ceiling panel unit 40B installed in the perimeter zone 107. In other words, the water-source heat pump unit 50 reuses water that has absorbed sensible heat in another device to generate cool air. Therefore, this air conditioning system is an efficient system that makes full use of well water without waste. Furthermore, the water-source heat pump unit 50 can individually air-condition the small room in which it is installed only when it is in use. Therefore, energy conservation is achieved throughout the air conditioning system 1.

[0225] <Cool Spot Device 55> Furthermore, with the above-described cool spot device 55, a user entering through the building entrance can press button 507 to directly supply low-temperature cool air to the user. This allows the user to be cooled immediately. Furthermore, when the user is satisfied with the cooling effect and presses button 507 again, the supply of cool air is stopped. Such a cool spot device 55 can efficiently use the cool air from the water-source heat pump unit 50 to suit the user's preferences, thereby improving the cooling effect for the user. Furthermore, because the supply of cool air is stopped by pressing button 507 while still meeting the needs of individual users, energy savings are achieved.

[0226] Furthermore, with the above-described cool spot device 55, the supply of cool air is automatically stopped by the timer even if the user does not press the button 507 again. Therefore, even if the user forgets to press the button 507, wasteful use of the cool air from the water-source heat pump unit 50 is prevented.

[0227] Furthermore, the cool spot device 55 described above has a thin depth of approximately 200 mm, so that even when it is installed in a narrow corridor (see FIG. 18), it does not interfere with the flow of users.

[0228] <Counter Air Conditioner 10> As shown in Figure 19, even if an outdoor air treatment unit 60 is installed on the ceiling of the atrium and an air-conditioned sofa 90 is installed at the entrance (first floor) of the atrium, it is difficult to adjust the thermal environment on the second floor of the atrium. However, with the air-conditioning system 1 described above, the counter air-conditioner 10 is installed on the second floor of the atrium inside the building. (See Figure 19.) This allows for adjustment of the thermal environment even on the second floor in the atrium.

[0229] Countertop air-conditioner 10 can also radiate cold toward the user sitting on a chair at counter 19 from the feet of the user. Therefore, even when the temperature of well water flowing into the primary side of heat exchanger 5 is high and the temperature of water passing through cold water return pipe 101A is high, the user can feel the cooling effect. Note that the cold transmitted to the user is higher than the cooling effect felt when receiving air supplied from another air-conditioning unit (for example, outdoor air processing unit 60) located in the space where countertop air-conditioner 10 is installed (an example of "radiant heat equal to or greater than a predetermined value" according to the present invention).

[0230] Furthermore, with the air conditioning system 1 described above, the water flowing into the countertop air conditioner 10 is water at about 21-22 degrees Celsius that has absorbed sensible heat from the outside air at the desk 30. In an open-ceiling area on the second floor, users can fully experience the cooling effect even with cold generated by water at such a high temperature. Additionally, as described above, users sitting in chairs on the counter 19 can also experience the cooling effect by radiating cold toward them from their feet.

[0231] Furthermore, countertop air conditioner 10 reuses water that has absorbed sensible heat in other devices to generate chilled air. Therefore, this type of air conditioning system is an efficient system that utilizes well water without waste. Furthermore, by controlling the opening of solenoid valve 105, the amount of water flowing through chilled water supply pipe 101A and chilled water return pipe 101B is adjusted. Therefore, the amount of water that exchanges heat with well water in the direct system in heat exchanger 5 is reduced. Therefore, the flow rate of well water that exchanges heat with the heat medium is also reduced. Therefore, countertop air conditioner 10 can achieve energy savings by effectively utilizing well water even when multiple air conditioning units are installed. Furthermore, by reducing the amount of well water used, it can easily accommodate situations where the amount of well water that can be pumped from the well is limited.

[0232] In winter, warm air can be provided to the user by running hot water through the hot water supply pipe 101C and the hot water return pipe 101D. Therefore, the air conditioning system 1 is a highly convenient air conditioning system.

[0233] <dcfcu20> Furthermore, in the DCFCU 20, the baffle plate 202 absorbs the operating noise of the fan 201. This improves the comfort felt by the user in the air-conditioned space. Furthermore, the air blown out from the fan 201 hits the plate surface of the baffle plate 202, passes laterally through the plate surface, and heads toward the coil 203. In other words, the air heading toward the coil 203 is rectified, and heat is exchanged with the air uniformly in the coil 203. In other words, the efficiency of heat exchange in the coil 203 is improved.

[0234] Furthermore, the fan 201 used in the DCFCU 20 that constitutes the air conditioning system 1 described above is a fan that operates on direct current, thereby achieving energy savings. The coil 203 used in the DCFCU 20 is a dry coil that removes sensible heat from the air being blown out. Therefore, the surface of the coil 203 is dry, which prevents dust and other particles from adhering to the surface. Therefore, the DCFCU 20 does not need to include a filter on the side of the coil 203 that is closer to the space to be air-conditioned. In other words, the DCFCU 20 has a structure in which the face panel 204 can be opened and each component can be easily replaced from the side of the space to be air-conditioned.

[0235] <dcfcu20b> In addition, the DCFCU 20B is disposed near the ceiling panel unit 40A in the interior zone 106. Therefore, the water flowing into the coil 401 of the ceiling panel unit 40A and The piping through which the water flows into the coil 203 of the DCFCU 20B can be shared, thereby reducing the installation cost of the DCFCU 20B.

[0236] <Air-conditioned sofa 90A, 90C> With the air-conditioned sofa 90A described above, cool air hits the clothes of a user sitting on the seat 901A. Also, with the air-conditioned sofa 90C, cold heat is transferred to the clothes of a user sitting on the seat 901C. This prevents the user from feeling uncomfortable when the cool air hits their skin directly.

[0237] Furthermore, with the air-conditioned sofa 90A described above, cool air is supplied to the user from close range through the opening 918A. With the air-conditioned sofa 90C described above, heat is transferred from the panel main body 916C to the user's clothes via the seating section 903C. Therefore, with the air-conditioned sofa 90A or 90C, the efficiency of transferring cool air to the user is improved. Therefore, the user can be cooled as desired. Furthermore, the user can feel the cooling effect even when the temperature of the well water is high.

[0238] Furthermore, with the air-conditioned sofa 90A and air-conditioned sofa 90C described above, cold can be transmitted to the user from close range, allowing the user to feel the cooling effect even if the amount of cold supplied to the user is small. This reduces the power required for the pump 34 that pumps the water. Furthermore, the use of well water in the direct system that exchanges heat with the water in the heat exchanger 5 is also reduced. This allows for effective use of well water and achieves energy savings. Furthermore, even in situations where the amount of well water that can be pumped from the well is limited, this system can easily accommodate such situations.

[0239] <Desk 30> Furthermore, with the DCFCU20A that is retrofitted to the desk 30 as described above, even if the specifications of the DCFCU20A or the desk 30 are changed after the DCFCU20A has been retrofitted to the desk 30, the DCFCU20A can be removed from the desk 30 by removing the screws that fasten the DCFCU20A to the desk 30. Then, the DCFCU20A whose specifications have been changed can be easily re-fixed to the desk 30. In other words, with the DCFCU20A as described above, changes in specifications can be easily accommodated.

[0240] Furthermore, the DCFCU 20A as described above has a simple structure because it is formed from the fan 303 and the coil 307. This reduces the weight of the DCFCU 20A, making it easy to change the layout of the DCFCU 20A. Furthermore, the DCFCU 20A as described above can be removed from the desk 30 for easy maintenance. In other words, the DCFCU 20A as described above is easy to handle.

[0241] Furthermore, since the DCFCU 20A as described above is attached to the underside of the top panel 31 of the desk 30, the desk 30 does not need to have space to accommodate the DCFCU 20A, improving the freedom of selection of the desk 30. Furthermore, since the DCFCU 20A as described above is attached to the underside of the top panel 31 of the desk 30, there is no need to customize the components that form the DCFCU 20A to fit the desk 30. This reduces the initial cost.

[0242] Furthermore, with the DCFCU20A described above, the fan 303 is installed on the far side as seen from the seated person. This reduces the degree to which the seated person perceives the operating noise of the fan 303. Furthermore, the location on the far side as seen from the seated person is a location that is less likely to be touched by the legs of the seated person when the seated person sits down, compared to a location in front of the seated person. Therefore, even if the size of the fan 303 installed in this location is made large, the legs of the seated person are prevented from hitting the underside of the accommodation portion 304 that accommodates the fan 303 when the seated person sits down. In other words, the larger the size, By installing a small fan 303, the output of the fan 303 is suppressed, and the operating noise of the fan 303 is reduced.

[0243] Furthermore, with the DCFCU 20A described above, the space through which the air blown out from the fan 303 travels toward the seated side of the seated occupant 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. This prevents a decrease in the efficiency of heat exchange between the blown air and the coil 307, and also reduces pressure loss of the blown air.

[0244] Furthermore, according to the DCFCU 20A described above, the outer surface 372 of the coil 307 is disposed upright so as to face the direction in which the fan 303 is installed, thereby reducing the height dimension of the coil 307. This allows the housing 304 of the DCFCU 20A to be made thinner.

[0245] Furthermore, in the DCFCU 20A described above, the rectangular duct 305 ensures a sufficient area for the blown-out air to pass through while being thin. Therefore, while cool air is appropriately supplied to the seated occupant, the occupant's legs are prevented from coming into contact with the duct 305, causing discomfort to the occupant. Furthermore, the step at the communicating portion between the accommodation section 304 and the duct 305 is provided with an inclined surface 306, so that the blown-out air that passes through the gaps between the flow tube members 371 of the coil 307 naturally and efficiently moves along the inclined surface 306 toward the seated side of the occupant. Therefore, when the blown-out air enters the duct 305 from the accommodation section 304, pressure loss due to the blown-out air hitting the step is prevented.

[0246] Furthermore, the cross-sectional size of duct 305 in the direction from the location where fan 303 is installed toward the seated side of the seated person is smaller than the cross-sectional size of accommodation section 304. Therefore, the flow velocity of the air blown out from outlet 309 of fan 303 increases when it enters duct 305. Therefore, air with an appropriate force is supplied toward the seated person from air inlet 320 at the end of duct 305 on the seated side of the seated person.

[0247] Furthermore, with the desk 30 equipped with the DCFCU 20A as described above, air is drawn into the fan 303 from the space under the legs of the seated person (the space below the tabletop), and temperature-adjusted air is blown out to the seated person. Therefore, if warm air accumulates in the space under the legs 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 equipped with the DCFCU 20A as described above can provide comfort to the seated person.

[0248] <Other variations> With regard to the above-described ceiling panel unit 40, the coil 401 of the ceiling panel unit 40B installed in the perimeter zone 107 does not need to be constantly supplied with water. Conversely, the coil 401 of the ceiling panel unit 40A installed in the interior zone 106 may be constantly supplied with water.

[0249] Furthermore, with respect to the countertop air conditioner 10, the aluminum three-layer pipe 101 may be formed from a pipe through which either cold water or hot water passes.

[0250] In the above embodiment, the air conditioning device that uses well water from a direct system may use well water from an indirect system, and conversely, the air conditioning device that uses well water from an indirect system may use well water from a direct system.

[0251] In the above embodiment, the well water supply pump 4 operates in two modes, but the number of operation modes is not limited to two. In the above example, the amount of well water flowing into the primary side of heat exchanger 5 is adjusted so that the outlet temperature of the cold water on the secondary side of heat exchanger 5 becomes a predetermined temperature, but the adjustment of the amount of well water flowing into the primary side of heat exchanger 5 is not limited to this example. Similarly, well water thermal storage pump 13 adjusts the amount of well water flowing into the primary side of heat exchanger 14 so that the outlet temperature of the cold water on the secondary side of heat exchanger 14 becomes a predetermined temperature, but the adjustment of the amount of well water flowing into the primary side of heat exchanger 14 is not limited to this example.

[0252] Furthermore, the locations where each air conditioner is installed are not limited to the above examples. Also, chiller 110 does not have to be installed. That is, heat exchange with the chilled water used in each air supply means does not have to be performed in heat exchangers 22, 42 to which chilled water is supplied from the chiller. Also, the location where water tank 9 is installed is not limited to under the floor of the space to be air-conditioned.

[0253] Furthermore, in the above embodiment, examples have been mainly shown in which each air supply means supplies cold air or cold heat to the space to be air-conditioned, but for example, in winter, each air supply means may supply warm air to the space to be air-conditioned.The heat medium that absorbs cold heat to generate such warm air in each air supply means may be heated by heat exchange with well water.Furthermore, the well water in the water tank 9 may absorb cold heat from the space to be air-conditioned and store it.

[0254] In the above embodiment, the fan 303 of the DCFCU 20A that is retrofitted to the desk 30 is installed so that the air it blows out faces the underside of the tabletop 31. The airflow tube member 371 is installed facing up 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 have to face the underside of the tabletop 31. Furthermore, the outer surface 372 does not have to be installed facing up so that it faces the direction in which the fan 303 is installed. For example, the air outlet 309 of the fan 303 may be installed facing the side of the tabletop 31 of the desk, and the outer surface 372 of the coil 307 may be installed at a predetermined angle so as to narrow the space in the traveling direction of the air blown out from the fan 303 as viewed from the fan 303.

[0255] In the above embodiment, the bottom of the conduit 305 is provided in a stepped shape toward the back surface of the top board 31 of the desk 30 relative to the bottom surface of the storage section 304, but this stepped portion does not have to be provided. Moreover, when the stepped portion is provided, the inclined surface 306 does not have to be provided at the stepped portion.

[0256] Furthermore, in the above embodiment, an example was shown in which DCFCU20A is retrofitted to a desk 30 used by a seated person, but DCFCU20A may also be retrofitted to a desk used by a user in a standing position.

[0257] Although one 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 a person skilled in the art can conceive of various modifications or alterations within the scope of the ideas described in the claims, and it is understood that these also naturally fall within the technical scope of the present invention. Furthermore, the embodiments and modifications disclosed above can be combined with each other. [Explanation of symbols]

[0258] 1··Air conditioning system: 10··Counter air conditioner: 20··DCFCU: 30, 30··Desk: 40··Ceiling panel unit: 45··Floor panel unit: 50··Water source heat pump unit: 60··Outdoor air treatment unit: 55··Cool spot device: 70··Duct unit: 90··Air-conditioned sofa: 110··Chiller: 2. Well water pumping pump: 3. Pumping water tank: 4. Well water supply pump: 5. Heat exchanger: 6, 7, 8. Valve: 9. Water tank: 11. Heat storage tank: 12. Water return tank: 13. Well water storage tank Heat pump: 14··Heat exchanger: 15, 16··Valve: 17··Well water return pump: 18··Entrance: 19··Counter: 21··Supply system secondary pump: 22··Heat exchanger: 23··Pump: 31··Top plate: 32··Back panel: 33··Reinforcement material: 34··Pump: 41··Heat storage system secondary pump: 42··Heat exchanger: 43··Pump: 101··Aluminum three-layer pipe: 102··Piping: 103··Fitting: 104··Manual valve: 105··Solenoid valve: 106 Interior Zone: 107 Perimeter Zone: 401 Coil: 402 Main piping: 403 Piping: 404 Carbon sheet: 405 Panel body: 406 Valve: 451 Panel body: 452 Header piping: 453 Tube: 454 Piping: 455 Fitting: 456 Carbon sheet: 501··Main body: 502··Door: 503, 504··Air outlet: 505··DC fan: 506··Outlet: 507··Button: 508··Oval duct: 509··Air volume adjustment damper: 510··Opening: 521··Water heat exchanger: 522··Air heat exchanger: 523··Compressor: 524··Expansion valve: 525··Fan: 526··Filter: 527··Four-way valve: 701: Main body: 702: Damper: 703: Anemometer: 704: Blade: 705: Outlet: 706: Branch: 901··Seat: 902··Cushion: 903··Seating section: 904··Hollow section: 905··Piping: 906··Fan: 908··Guide vane: 909··Coil: 910··Outlet pipe: 911··Return pipe: 912··Valve: 913··Temperature sensor: 914··Suction port: 915··Panel unit: 916··Panel body: 917··Tube: 918··Opening: 919··Rotation roller

Claims

1. An air conditioning device that can be used in an air conditioning system that uses well water to adjust the temperature of a space to be air-conditioned, a heat medium path through which the heat medium passes after being cooled by a heat exchanger that exchanges heat with well water and then sent; a radiant panel for an interior surface that is capable of transferring heat from a portion of the heat medium path and that radiates cold heat of the heat medium from a portion of an interior surface that forms the air-conditioned space where the air temperature is adjusted by the air-conditioning system; a valve capable of adjusting the flow rate of the heat medium passing through the radiant panel, The heat medium path is also provided with a heat pump unit, which is an air conditioning system that uses the heat medium cooled by the heat exchanger other than the radiation panel and uses the heat of the heat medium after passing through the radiation panel. Air conditioner.

2. A plurality of the radiant panels are provided. The size of the radiant panel is 600mm x 600mm or less, which is the same as the standard size of commercially available ceiling panels so that it can be easily replaced with commercially available ceiling panels installed in existing buildings. The plurality of radiating panels are grouped together, and the valve is controlled to adjust the flow rate of the heat medium flowing through each of the heat medium paths capable of transferring heat to the group of radiating panels. The air conditioning system according to claim 1 .

3. the valve is controlled so that the heat medium always passes through the heat medium path of the air conditioner arranged in a perimeter zone of the space to be air-conditioned; The valve is controlled so that the flow rate of the heat medium passing through the heat medium path of the air conditioner arranged in an interior zone of the space to be air-conditioned varies depending on the temperature of the interior zone.

3. The air conditioning system according to claim 1 or 2.

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