JP2008281285A - Air conditioning system, and building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system with less consumption of energy resource. <P>SOLUTION: The air conditioning system is provided with a heat storage part 3 installed on an underfloor space 2 formed beneath a floor 10 of a unit building U, a floor surface louver 10a provided on the floor 10, and an outside air introducing part 4 which can be opened and closed in order to guide outside air to the underfloor space 2. A heat exchange part 31 is formed on an upper surface of the heat storage part 3, and the outside air AO taken in a heat storage section 2a by opening the outside air introducing part 4 is guided to the floor surface louver 10a through the heat exchange part 31. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning system that performs ventilation, dehumidification, temperature adjustment, and the like of air inside a building, and a building including the same.

  Conventionally, heat storage is performed by heating or cooling a heat storage body arranged under the floor of a building, and the underfloor space is heated and cooled via a radiator connected to the heat storage body, thereby heating and cooling a room on the floor. A heating / cooling device is known (see Patent Document 1).

In the heating / cooling device of this Patent Document 1, a through-hole that can be opened and closed is provided in the floor, and the communication state with the under-floor space is changed by opening and closing the through-hole to control the heating / cooling of the room. .
JP 2005-155937 A

  However, even in summer, the temperature of the outside air may be lower than the temperature of the inside air inside the building, and taking in such comfortable air into the building may improve the indoor environment.

  In such a case, it is possible to reduce the consumption of energy resources by effectively utilizing outside air as much as possible, rather than performing air conditioning inside the building only with a cooling / heating device that consumes energy resources.

  Then, an object of this invention is to provide the air conditioning system with little consumption of energy resources, and a building provided with the same.

  In order to achieve the above object, an air conditioning system of the present invention includes a heat storage unit installed in an underfloor space formed below a floor of a building, a floor opening provided in the floor, and an outside air in the underfloor space. A heat exchange part formed on the upper surface of the heat storage part, and the outside air taken into the underfloor space by opening the outside air introduction part is exchanged with the heat exchange part. It is guided to the floor opening through a section.

  Moreover, it is an air conditioning system provided with the heat storage part installed in the underfloor space formed under the floor of a building, Comprising: On the upper surface of the said heat storage part, the heat stored in the said heat storage part, outside air, An inclined surface is formed as the heat exchange part, and a water collecting part into which condensed water generated on the inclined surface flows is formed at the lower end of the inclined surface.

  Here, the heat storage unit can be configured such that cold or warm heat is stored through a heat transport fluid cooled or heated by a heat pump. Moreover, inside air in the building may be introduced into the underfloor space.

  Furthermore, the heat storage part is stored with cold water or hot water, and a water sprinkler for spraying the waste water toward the ground is provided at the outside position of the drain pipe through which the waste water from the heat storage part passes. It may be a thing.

  Further, the heat storage section may be provided with an intake port for taking air into the interior and a discharge port for exhausting air via the interior.

  Furthermore, the heat storage unit may be one that stores heat using a solar wall heating medium heated by sunlight.

  Moreover, the building of this invention was equipped with one of the said air conditioning systems.

  In the air conditioning system of the present invention configured as described above, the outside air is guided to the floor opening via the heat exchange unit of the heat storage unit installed in the underfloor space.

  When the outside air passes through this heat exchanging section, if cold heat is stored in the heat storage section, the temperature of the outside air is lowered and dehumidification is performed, and if warm heat is stored, the outside air is warmed.

  Thus, since the outside air can be taken into the building by passing the outside air through the heat storage unit, the outside air can be effectively used to save energy resources.

  In addition, by making the upper surface of the heat storage part an inclined surface, the contact area with the air passing through the heat storage part is increased and heat exchange is performed efficiently, and even if condensed water is generated on the inclined surface, the heat storage part is inclined. By providing a water collecting portion at the lower end of the surface, the water can be drained smoothly.

  Furthermore, if the heat storage unit stores heat by a heat pump that uses natural heat energy, an air-conditioning system that consumes less energy resources can be achieved.

  Also, if the inside air is introduced into the underfloor space so that the air circulates between the inside of the building, the inside air once adjusted can be used effectively, and energy resources can be saved.

  And when draining from the heat storage part, by spraying the drainage to the ground outside the building with a sprinkler, for example, when the drainage is cold water, the temperature at the outside position of the building is lowered and taken in from the surroundings The temperature of the outside air can also be lowered.

  In addition, by providing an air path that passes through the inside of the heat storage unit, heat exchange can be performed both inside and outside the heat exchange unit, which is efficient.

  Furthermore, if the heat medium of the solar wall is used when storing heat in the heat storage unit, the consumption of energy resources can be further reduced.

  Moreover, the building provided with such an air conditioning system can efficiently cool and heat the whole building by effectively utilizing natural energy.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  Drawing 1 is an explanatory view explaining the whole composition of unit building U as a building provided with the air harmony system of this embodiment.

  First, in terms of configuration, such a unit building U has a foundation constructed of bottom concrete 24 constructed as foundation insulation, and side wall concrete 21 and 22 erected on the side edges thereof. It is constructed by installing multiple building units.

  Then, the lower floor space 2 below and the indoor 11 as the upper building interior are separated by the floor 10 of the building that covers the upper surface of the foundation. The indoor 11 corresponds to a living room such as a living room, a bedroom, and a dining room, and a non-living room such as a corridor, a washroom, and a kitchen.

  Further, in the underfloor space 2, a heat storage section 2 a for installing a heat storage section 3 to be described later and the other underfloor section 2 b are partitioned by an defining wall 23. Further, the heat storage section 2 a communicates with the indoor 11 by a floor surface gallery 10 a as a floor opening provided in the floor 10. The underfloor section 2b and the indoor 11 are also communicated with each other via a floor surface gallery 10b provided on the floor 10.

  Further, the floor 10 is provided with a louver 10c for outside air for communicating with the outdoor 12 of the unit building U, and the outside air AO can be directly introduced into the room. The louver 10c for outside air is provided with a louver, and the outside air AO can be taken into the indoor 11 or blocked by opening and closing the louver.

  On the other hand, in the heat storage section 2 a of the underfloor space 2, the outside air introduction portion 4 is provided on the side wall concrete 21 that becomes a boundary with the outdoor 12. The outside air introduction portion 4 is mainly configured by an outside air introduction port 41 that is a through hole of the side wall concrete 21 and a lid portion 42 that opens and closes the outside air introduction port 41. The lid portion 42 can be opened and closed by an operation from the indoor 11 by remote operation means (not shown).

  Moreover, the inside wall introduction part 43 which connects both divisions is provided in the defined wall 23 used as the boundary of the thermal storage division 2a and the underfloor division 2b. The inside air introduction portion 43 is mainly configured by a through hole 431 and a fan 432 for sending air in the underfloor compartment 2b to the heat storage compartment 2a.

  And in this thermal storage division 2a, the thermal storage part 3 as shown in FIG. 2 is arrange | positioned. The heat storage unit 3 includes a box-shaped container 35 whose upper part is opened, a heat exchange part 31 that closes the upper part of the container 35, and a drain as a water collecting part that extends to the side edge of the heat exchange part 31. It is mainly comprised from the part 34 and the heat insulation parts 33, such as glass wool which coat | covers the side surface and bottom face of the container 35. As shown in FIG.

  The container 35 is a hollow container formed of a synthetic resin material such as plastic so that the upper end of one side wall 35b is higher than the upper end of the opposite side wall 35a. The container 35 is filled with water 32 such as cold water or hot water as a heat transport fluid.

  The heat exchanging portion 31 includes an inclined surface 311 that obliquely blocks the upper portion of the container 35 from the higher side wall 35b to the lower side wall 35a, and fins that are formed in parallel ribs on the inclined surface 311. It is mainly composed of the sections 312.

  The inclined surface 311 is formed of a steel plate or the like having high thermal conductivity, and the fin portion 312 is extended toward the inclination direction of the inclined surface 311 using a steel plate or the like. That is, by providing a plurality of fin portions 312,... Projecting upward from the upper surface of the inclined surface 311, the contact area between the heat exchanging portion 31 and the outside air increases, and heat exchange is performed efficiently. It comes to be. Here, when the heat storage part 3 is arrange | positioned in the heat storage division 2a, it is good for the inclined surface 311 to make the external air introduction part 4 side low.

  A drain section 34 having a concave shape in cross section is provided along the side edge at the lowest position which becomes the lower end of the inclined surface 311. Water droplets such as condensed water that has flowed down the inclined surface 311 flow into the drain portion 34, and are discharged through the drain portion 34 to a discharge path (not shown). For this reason, the drain part 34 is good to provide the drainage gradient in the direction orthogonal to the inclination direction of the inclined surface 311 for example.

  The heat storage unit 3 is connected with a heat pump 5 as a heat source.

  This heat pump 5 is a device that heats or cools by moving heat between a low temperature object and a high temperature object, and absorbs heat by compressing and expanding while circulating a heat medium such as carbon dioxide. Or the heat 32 is released to heat or cool the water 32 as a heat transport fluid in contact with the heat medium.

  The water 32 cooled or heated by the heat pump 5 in this way is sent out by the water supply pipe 51 and filled in the container 35 of the heat storage section 3, and the water 32 used in the heat storage section 3 is a drain pipe 52 is returned to the heat pump 5.

  In this embodiment, a case where the air conditioning system is used mainly in summer will be described. That is, the cooled water 32 is supplied to the heat storage unit 3 from below the container 35, and the water 32 whose temperature has been increased by exchanging heat with the outside air in the heat exchange unit 3 is discharged from above the container 35.

  Next, a case where the outside air is dehumidified and cooled by the air conditioning system of the present embodiment will be described.

  First, cold water is stored at night by sending the water 32 cooled by the heat pump 5 to the heat storage unit 3 through the water supply pipe 51 using late-night power with a low electricity bill. When heat is stored in the heat storage unit 3, the cover 42 of the outside air introduction unit 4 is closed to block the intrusion of outside air and the floor louver 10a is also closed in order to reduce heat radiation from the heat exchange unit 31. It is preferable to leave.

  Further, when it is cool at night or the like, the outside air AO may be in a comfortable state without performing dehumidification or cooling. Therefore, as shown in FIG. 1, the outside air louver 10c is opened to directly remove the outside air AO. It may be taken into the indoor 11. In particular, when the planting P is planted around the outside air louver 10c and the outside air AO having a low temperature can be introduced even in summer, the outside air AO can be taken into the indoor 11 as it is.

  Then, in the morning when the temperature near the ground around the unit building U is low, or when it is desired to ventilate the indoor 11, as shown in FIG. 1, the lid 42 of the outside air introduction unit 4 is opened and the outside air AO is opened. Is taken into the heat storage section 2a.

  The outside air AO taken into the heat storage section 2a hits the heat exchange section 31 of the heat storage section 3, and heat exchange is performed with the heat exchange section 31 cooled by the cooled water 32. At this time, part of the moisture contained in the outside air AO becomes condensed water and flows down the inclined surface 311 and is drained from the drain portion 34.

  On the other hand, the outside air AO dehumidified by generating condensed water flows into the indoor 11 through the floor surface gallery 10a. Since the outside air AO supplied to the indoor 11 through the heat storage section 2a is dehumidified and cooled as compared with when it is outdoors 12, the environment of the indoor 11 can be adjusted to a comfortable state.

  On the other hand, when the outdoor air temperature rises in the afternoon when the outdoor air AO is taken into the indoor 11, the consumption of energy resources such as electricity and gas necessary for the cooling becomes large. Is closed and the introduction of the outside air AO is stopped.

  On the other hand, the fan 432 of the inside air introduction unit 43 is turned to send the air in the underfloor compartment 2b into the heat storage compartment 2a. As shown in FIG. 1, the air in the underfloor compartment 2b is an indoor air AI that flows from the indoor 11 through the floor louver 10b, and after being dehumidified and cooled in the heat storage compartment 2a, the air passes through the floor louver 10a. Return to 11.

  Thus, by sending the air in the indoor 11 to the underfloor space 2 and circulating it, the air can be dehumidified and cooled with a small amount of energy resources consumed, and the comfortable environment of the indoor 11 can be maintained.

  Next, the operation of the air conditioning system of the present embodiment will be described.

  In the air conditioning system of the present embodiment configured as described above, the outside air AO is guided to the floor surface gallery 10a through the heat exchange unit 31 of the heat storage unit 3 installed in the heat storage section 2a of the underfloor space 2. .

  When the outside air passes through this heat exchanging unit 31, if the cold energy is stored in the heat storage unit 3, the temperature of the outside air AO is lowered and dehumidification is performed, and if the heat is stored, the outside air is warmed. become.

  In this way, by passing outside air through the heat storage unit 3, the outside air AO becomes a temperature and humidity at which the outside air AO can be comfortably taken into the indoor 11, so that the outside air AO can be used effectively.

  Further, by making the upper surface of the heat storage unit 3 the inclined surface 311, the outside air AO taken from the lower side of the inclined surface 311 can easily hit the heat exchanging unit 31, and the outside air AO passing through the heat exchanging unit 31 The contact area increases and heat exchange is performed efficiently.

  Furthermore, even if condensed water is generated on the inclined surface 311 when the outside air AO is cooled, the drain portion 34 is provided at the lower end of the inclined surface 311 so that it is reliably processed and mold is generated around the heat storage unit 3. There is no such thing as letting

  Moreover, if heat storage of the heat storage unit 3 is performed by the heat pump 5 using natural heat energy, energy resources such as electricity and gas can be saved.

  Furthermore, if the inside air AI is introduced into the underfloor space 2 so that the air circulates between the indoor space 11, the adjusted inside air AI can be used effectively, so that the consumption of energy resources is reduced. can do.

  Furthermore, the unit building U provided with such an air conditioning system can efficiently utilize the natural energy to efficiently cool and heat the entire building.

  Next, an air conditioning system of a form different from the above embodiment will be described with reference to FIG. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  In the first embodiment, an air conditioning system that effectively uses the condensed water C generated when the outside air AO is dehumidified and the cold water 62 cooled by the heat pump 5 will be described.

  The heat storage part 6 which comprises the air conditioning system of this Example 1 is arrange | positioned at the heat storage division 2a similarly to the said embodiment.

  The heat storage unit 6 includes a box-shaped lower container 65, an inclined surface 61 as a heat exchanging part disposed in an inclined roof shape above the lower container 65, a lower end of the inclined surface 61, and a side wall of the lower container 65. Mainly composed of an inlet 64 as a water collecting portion formed in a gap with 65a and a heat insulating portion 63 such as glass wool covering the side surface and bottom surface of the lower container 65.

  The lower container 65 and the inclined surface 61 are integrally formed of a material having high thermal conductivity such as a steel plate, and the inside and outside of the lower container 65 are communicated with each other through an inflow port 64. That is, the lower end of the inclined surface 61 is a drooping wall 61a that is bent downward before the side wall 65a of the lower container 65, and the gap between the drooping wall 61a and the side wall 65a serves as the inflow port 64.

  A water level sensor 71 for measuring the water level of the cold water 62 stored inside is attached to the inner surface of the lower container 65.

  On the other hand, the heat storage unit 6 and the heat pump 5 are connected by a water supply pipe 51 and a drain pipe 52, and a water sprinkler 7 is attached to the middle of the drain pipe 52.

  This water sprinkler 7 is provided at a position outside the side wall concrete 22 of the building that will be the outdoor 12, and water spray holes (not shown) are provided on the lower surface so that water is sprayed toward the planting P on the ground. Yes.

  Moreover, this water sprinkler 7 is connected to the water level sensor 71 by the communication cable 72, and when the water level of the cold water 62 of the heat storage part 6 becomes more than a certain level, a part or all of the cold water 62 discharged from the heat storage part 6 is Water is sprayed from the sprinkler 7.

  Next, an operation in the case of performing dehumidification / cooling of the outside air by the air conditioning system of the first embodiment will be described.

  In this air conditioning system, when outside air AO is introduced into the heat storage section 2a, heat exchange is performed with the inclined surface 61, and the dew condensation water C generated at that time descends the inclined surface 61 to the inlet 64. Into the cold water 62 in the lower container 65.

  If the inflow amount of the dew condensation water C increases, the water level in the lower container 65 rises. However, if it is left as it is, it overflows from the inflow port 64. Control so that the water level does not exceed the height of.

  On the other hand, the temperature of the cold water 62 has increased due to heat exchange with the outside air AO and the presence of condensed water C, but it is often lower than the temperature of the outdoor 12, and effective use of the discharged cold water 62 is desired. It is. That is, effectively using the cold water 62 whose temperature has been once lowered by the heat pump 5 that consumes energy resources such as electricity contributes to the reduction of the energy resource consumption of the entire system.

  Therefore, if water is sprayed from the sprinkler 7 provided in the middle of the drain pipe 52 toward the planting P on the ground, not only will the watering of the planting P be performed, but the temperature around the planting P will be lowered. Can do.

  The water sprinkler 7 is connected to a water level sensor 71 via a communication cable 72. When a water level above a certain level is detected by the water level sensor 71, the signal is sent to the water sprinkler 7 for watering.

  Then, by taking in the outside air AO that has fallen due to watering, or by lowering the temperature around the building, it is possible to maintain a comfortable indoor 11 environment with a small amount of energy resources.

  Other configurations and operational effects are substantially the same as those in the above-described embodiment, and thus the description thereof is omitted.

  Next, an air conditioning system of a form different from the above embodiment will be described with reference to FIG. The description of the same or equivalent parts as those described in the above embodiment or Example 1 will be given the same reference numerals.

  In the second embodiment, the configuration of the air conditioning system in which the outside air AO is routed inside the heat storage section 6 will be described based on the configuration of the heat storage section 6 of the first embodiment.

  The heat storage section 6 is provided with an intake port 66 that communicates the inside and outside in the middle of the hanging wall 61 a on the lower end side of the inclined surface 61. In addition, a discharge port 67 is provided in the side wall 65b of the lower container 65 on the upper end side of the inclined surface 61 to communicate the inside and the outside. The intake port 66 and the discharge port 67 are provided at locations that are always located above the water surface of the cold water 62.

  When the intake port 66 and the discharge port 67 for passing air are provided inside the heat storage unit 6 as described above, the outside air AO taken toward the heat storage unit 6 not only passes through the upper surface of the inclined surface 61. After being taken in from the intake port 66, cooled and dehumidified by the cold water 62, it is discharged from the discharge port 67.

  For this reason, the path | route of external air AO becomes multiple, and heat exchange in the thermal storage part 6 comes to be performed efficiently.

  Other configurations and functions and effects are substantially the same as those of the above-described embodiment or Example 1, and thus description thereof is omitted.

  Next, an air conditioning system of a form different from the above embodiment will be described with reference to FIG. The description of the same or equivalent parts as those described in the embodiment or examples will be given with the same reference numerals.

  In the third embodiment, an air conditioning system mainly for heating in winter will be described.

  In this air conditioning system, a heat storage tank 9 is connected between the heat pump 5 and the heat storage unit 3. The heat storage tank 9 is a container for storing hot water whose outer shell is formed of a synthetic resin material such as plastic. When the heat storage tank 9 is disposed in the underfloor compartment 2b of the underfloor space 2, heat is dissipated and the underfloor compartment 2b is stored. Can warm the air.

  On the other hand, the heat storage unit 3 is connected to the heat pump 5 similarly to the above-described embodiment, and can store the heat by operating the heat pump 5. Furthermore, a solar wall 8 is connected to the heat storage unit 3 via a heat transport pipe 81, and the heat storage unit 3 stores heat by a heat medium warmed by sunlight during the daytime when the sun is shining. Can be done.

  The heat storage of the heat storage unit 3 can be configured to switch between the heat pump 5 and the solar wall 8, and if the heat medium sent from the solar wall 8 is used as much as possible, the consumption of energy resources such as electricity can be reduced. Can be suppressed.

  Next, the operation when the unit building U is heated by the air conditioning system of the third embodiment will be described.

  First, in the winter season, except for the case where ventilation is performed, the cover 42 of the outside air introduction unit 4 is closed and the outside air louver 10c is closed so that cold outside air does not enter.

  In addition, the heat storage tank 9 and the heat storage unit 3 store warm heat using late-night power at night. Furthermore, during the time when the solar wall 8 can be heated by sunlight in the daytime, the amount of heat stored in the heat storage unit 3 can be increased by natural energy. Thus, if the heat medium of the solar wall 8 is used when storing heat in the heat storage unit 3, the consumption of energy resources can be further reduced.

  And if the fan 432 of the inside air introduction part 43 provided in the defined wall 23 of the underfloor space 2 is operated, the inside air AI guided from the indoor 11 through the floor surface gallery 10b to the underfloor compartment 2b is moved through the heat storage compartment 2a. A flow of inside air AI circulation is formed such that it passes through and returns to the indoor 11 again.

  The inside air AI is warmed by the heat of the heat storage tank 9 when passing through the underfloor section 2b, and warmed by the heat of the heat storage section 3 when passing through the heat storage section 2a, and returns to the indoor 11 as warm air.

  Moreover, if the underfloor section 2b is warmed by heat radiation from the heat storage tank 9, the indoor 11 is heated via the floor 10 and the floor surface gallery 10b.

  In the above description, the case where the lid portion 42 of the outside air introduction unit 4 is closed has been described. However, when a warm day or ventilation is desired even in winter, the lid portion 42 is opened to take in outside air AO, and the heat storage unit 3. If it is sent to the indoor 11 after warming up, the room temperature of the indoor 11 will not drop rapidly, and a comfortable indoor environment is maintained.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment or other examples, and thus description thereof is omitted.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment or example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, in the said embodiment and Example, although the case where the heat pump 5 was used as a cooling and heating apparatus was demonstrated, it is not limited to this, It is an apparatus which can store cold heat and warm heat in the heat storage parts 3 and 6. Any form may be used.

  Further, in the above-described embodiments and examples, the configuration in which cold water or hot water is stored and stored as the heat storage units 3 and 6 has been described. However, the present invention is not limited to this, and the heat medium is a fluid other than water. May be. Moreover, the heat storage part which heat-stores using heat storage bodies, such as a brick, may be sufficient.

  Furthermore, in the said embodiment and Example, although the underfloor space 2 was divided | segmented into the thermal storage division 2a and the underfloor division 2b by the defined wall 23, it is not limited to this, The underfloor space 2 is not divided. May be.

It is explanatory drawing explaining the structure of the unit building which has arrange | positioned the air conditioning system of the best embodiment of this invention. It is a partially cut perspective view explaining the structure of a heat storage part. It is explanatory drawing explaining the structure of the air conditioning system of Example 1. FIG. It is explanatory drawing explaining the structure of the air conditioning system of Example 2. FIG. It is explanatory drawing explaining the structure of the unit building which has arrange | positioned the air conditioning system of Example 3. FIG.

Explanation of symbols

U unit building (building)
AO Outside air AI Inside air C Condensed water 10 Floor 11 Indoor (inside the building)
10a Floor surface (floor opening)
2 Underfloor space 2a Thermal storage compartment (underfloor space)
2b Underfloor section (underfloor space)
3 heat storage part 31 heat exchange part 311 inclined surface 32 water (heat transport fluid)
34 Drain Department (Catchment Department)
4 Outside air introduction part 42 Lid part 6 Heat storage part 61 Inclined surface (heat exchange part)
62 Cold water (heat transport fluid)
64 Inlet (Catchment)
66 Intake port 67 Discharge port 7 Sprinkler 8 Solar wall

Claims (8)

A heat storage unit installed in an underfloor space formed below the floor of the building, a floor opening provided in the floor, and an openable / closable outside air introduction unit for guiding the outside air to the underfloor space,
A heat exchange part is formed on the upper surface of the heat storage part, and outside air taken into the underfloor space by opening the outside air introduction part is guided to the floor opening part via the heat exchange part. Air conditioning system characterized by An air conditioning system having a heat storage unit installed in an underfloor space formed below a floor of a building,
An inclined surface is formed on the upper surface of the heat storage portion as a heat exchange portion between the heat stored in the heat storage portion and the outside air, and condensed water generated on the inclined surface flows into the lower end of the inclined surface. An air conditioning system in which a water collecting part is formed.   The air conditioning system according to claim 1 or 2, wherein cold heat or warm heat is stored in the heat storage unit via a heat transport fluid cooled or heated by a heat pump.   The air conditioning system according to any one of claims 1 to 3, wherein inside air inside the building is introduced into the underfloor space.   The heat storage unit is configured to store heat by cold water or hot water, and a water sprinkler for spraying the drainage toward the ground is provided at a position outside the building of a drain pipe through which drainage from the heat storage unit passes. The air conditioning system according to any one of claims 1 to 4, wherein the air conditioning system is characterized.   The air conditioning according to any one of claims 1 to 5, wherein the heat storage unit is provided with an intake port for taking air into the interior and a discharge port for discharging air via the interior. system.   The air conditioning system according to any one of claims 1 to 6, wherein the heat storage unit stores heat by a heat medium of a solar wall heated by sunlight. A building comprising the air conditioning system according to any one of claims 1 to 7.

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