JP6014696B2 - Ventilation system in a building with external wall side outdoor air circulation heat storage layer - Google Patents

Description

The present invention relates to a building ventilation system using geothermal heat or the like.

  Conventionally, for example, an underfloor space heat storage layer is formed by, for example, filling a large number of grits in the underfloor space, air from the outside is introduced into the underfloor space heat storage layer, and heat exchange is performed. The heat-exchanged air is exchanged with the underground heat while circulating in the underground pipe embedded in the ground of about 5 to 8 m (or 2 to 10 m) from the ground surface. 2. Description of the Related Art Geothermal building air conditioning systems that are supplied to building interiors and under-floor spaces are known (see Patent Documents 1 and 2). The underground pipe used in Patent Documents 1 and 2 is composed of, for example, an outer pipe whose lower end is closed and an inner pipe which is disposed inside the outer pipe and whose lower end is opened. A double pipe that lowers the air introduced from the outer pipe and the inner pipe, then collides with the bottom of the outer pipe, inverts it, moves it to the inside of the inner pipe, and raises it. Is exchanged with underground heat in the process of descending, colliding and reversing.

Japanese Patent No. 3030022 Japanese Patent No. 4970817

  The conventional heat storage layer in the underfloor space as described above can be formed by simply storing and filling a large number of grits in the underfloor space that originally exists in the building, so it is an efficient building that uses geothermal heat. This is a meaningful technique for realizing an air conditioning system at low cost.

  However, since it is actually very difficult to put guristone under the floor of an existing building, the heat storage layer in the underfloor space as shown in Patent Documents 1 and 2 is actually installed only in a new building. I can't. Therefore, conventionally, it has not been possible to efficiently install (add) a building air conditioning system using underground heat and a heat storage layer at low cost for an existing building.

The present invention has been made paying attention to such problems of the prior art, and the ventilation system in the building using the underground heat and the heat storage layer can be efficiently used even for an existing building at a low cost. The purpose is to enable installation (addition).

In order to solve the above problems , a ventilation system in a building having an outer wall side outdoor air circulation heat storage layer according to the present invention is a region outside or inside the outer wall of the building and adjacent to the outer wall in the ground surface or floor surface. In a space formed so as to protrude upward (vertical direction) from a predetermined area and to be partitioned from the outside, a large number of calcite and other heat storage bodies circulate between the heat storage bodies. A heat storage layer that is housed so that there is a possible gap, and an underground pipe that is buried in the ground and exchanges heat with the underground heat while circulating outside air taken in from outside And an underground pipe that is connected to the heat storage layer so as to allow air flow.

And the ventilation system in a building provided with the outer wall side outdoor air circulation heat storage layer according to the present invention is embedded in the ground, and exchanges heat with the underground heat while circulating the outside air taken in from the outside. Air can flow through the middle pipe and the gaps between each of the heat storage bodies provided in the interior, and each of the heat storage bodies and the heat are circulated in the interior of the outside air taken in from the outside. An outside air circulation heat storage layer to be exchanged, the outside air circulation heat storage layer connected to the underground pipe so as to be able to distribute the air, and outside air from the outside is taken in, and the taken-in outside air is taken into the outside air circulation heat storage layer and the underground A ventilation fan that circulates inside the pipe and then supplies it to the interior of the building, and the outside air circulation heat storage layer is an area on the ground adjacent to the outer wall surface outside the building and along the outer wall surface. In which a number of regenerator in the partition space extending upward is formed by being accommodated from the area on the ground extending elongated Te.

Moreover, the ventilation system in a building provided with the outer wall side outdoor air circulation heat storage layer according to the present invention is embedded in the ground, and exchanges heat with the ground heat while circulating the outside air taken in from the outdoors. Air can flow through the middle pipe and the gaps between each of the heat storage bodies provided in the interior, and each of the heat storage bodies and the heat are circulated in the interior of the outside air taken in from the outside. An outside air circulation heat storage layer to be exchanged, the outside air circulation heat storage layer connected to the underground pipe so as to be able to distribute the air, and outside air from the outside is taken in, and the taken-in outside air is taken into the outside air circulation heat storage layer and the underground A ventilation fan that circulates inside the pipe and then supplies it to the interior of the building, and the outside air circulation heat storage layer is an area on the floor surface that is close to the outer wall surface inside the building and extends along the outer wall surface Elongated in one in which a large number of regenerator in the partition space extending upwardly from the region of the floor surface is formed by being accommodated.

Moreover, in the ventilation system in a building provided with the outer wall side outdoor air circulation heat storage layer by this invention , the partition space in which each said heat storage body is accommodated may be demarcated by the outer wall surface .

Furthermore, in the building ventilation system provided with the outer wall side outdoor air circulation heat storage layer according to the present invention, the partition space in which each heat storage body is accommodated may be partitioned from the outside by a substantially box-shaped container .

  In the present invention, the heat storage layer connected to the underground pipe so as to be able to flow air, the heat storage layer that supplies air from the underground pipe to the interior or the underfloor space after the air is introduced into itself, or the air from the outdoors The heat storage layer to be supplied to the underground pipe after being introduced into the inside thereof protrudes upward (vertically) from a region adjacent to the outer wall on the ground surface or floor surface (region outside or inside the outer wall). It is formed by accommodating a large number of grits and other heat accumulators in the space formed. As described above, in the present invention, since the heat storage layer is configured without using the underfloor space of the building, the heat storage layer can be easily added to an existing building at low cost. become. Therefore, according to the present invention, the building air conditioning system using the underground heat and the heat storage layer can be efficiently installed (added) to an existing building at low cost.

  In the present invention, when the heat storage layer is formed by housing each heat storage body in a space in which at least one surface is defined by the outer wall surface, one surface of the heat storage layer is formed. Since it can comprise using an outer wall surface (surface of the outer side of an outer wall, or the surface of an indoor side), the material cost and construction cost of the said thermal storage layer can be restrained low.

  Further, in the present invention, when the heat storage layer is formed by housing each heat storage body in a space in a substantially box-shaped container formed of a heat insulating material, for example, the container mass-produced in a factory Since the space can be formed simply by transporting and installing to the desired position of the building, the heat storage layer can be constructed at an extremely low cost and efficiently.

It is side sectional drawing which shows the underground heat utilization building air-conditioning system provided with the outer wall side heat storage layer for low-rise stores based on Embodiment 1 of this invention. 1 is a cross-sectional plan view showing a first embodiment. It is a fragmentary perspective view which shows this Embodiment 1. FIG. It is side sectional drawing which shows the underground heat utilization building air-conditioning system provided with the outer wall side heat storage layer for low-rise stores based on Embodiment 2 of this invention. It is side sectional drawing which shows the underground heat utilization building air conditioning system provided with the outer wall side thermal storage layer for gymnasiums based on Embodiment 3 of this invention. It is a plane sectional view showing Embodiment 3. It is side sectional drawing which shows the underground heat utilization building air conditioning system provided with the outer wall side thermal storage layer for dome shaped buildings based on Embodiment 4 of this invention. It is a plane sectional view showing this Embodiment 4. (A) is a partial sectional side view for demonstrating the underground heat utilization building air-conditioning system provided with the outer wall side thermal storage layer based on Embodiment 5 of this invention, (b) is a partial sectional side view which shows another modification. FIG. It is a fragmentary sectional side view for demonstrating the underground heat utilization building air conditioning system provided with the outer wall side heat storage layer based on Embodiment 6 of this invention.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a side sectional view showing an underground heat-use building air conditioning system including an outer wall side heat storage layer for a low-rise store according to Embodiment 1 of the present invention, FIG. 1B is a plan sectional view thereof, and FIG. It is a perspective view.

  1A to 1C, 1 is an outer wall of a low-rise store, 2 is a flat roof of the low-rise store, 3 is a floor surface of the low-rise store, 4 is a ground surface, and 5 is an underground of about 2 to 10 m from the ground surface 4, for example. Underground pipe (for example, a double pipe consisting of an outer pipe 5a having a diameter of about 30-50 cm and an inner pipe 5b having a diameter of about 15-40 cm), 6 is for taking outdoor air from the suction port 6a and An air supply chamber to be supplied to the pipe 5 (the air in the air supply chamber 6 is introduced and lowered into the gap between the outer pipe 5a and the inner pipe 5b of the underground pipe by a fan not shown), 7 Is a partition plate (to be fixed to the outer wall 1 or the floor surface 3) that forms a substantially rectangular parallelepiped space projecting upward (vertically) from the floor surface 3 on the indoor side of the outer wall 1. , 7a is an upper side of the partition plate 7 in the figure. Are blowout openings formed in the minute, and the blowout openings 5ba for discharging the air in the space to the indoor side are introduced into the underground position in the space formed by the partition plate 7 and the outer wall 1. An upper end portion (air discharge port) of the inner pipe 5b of the pipe 5, 8 is a heat storage layer formed by accommodating and filling a large number of grits in the space formed by the partition plate 7 and the outer wall 1, and 9 is the roof 2 is an automatic opening / closing hatch (also used as a skylight) that is open for exhaust in summer and closed in winter and rainy weather, 10 is near the lower side of the roof 2 and the air supply chamber 6. A circulation duct (for winter) 11 connected to the inside is a damper opened to send warm air near the lower side of the roof 2 to the air supply chamber 6 through the circulation duct 10 in winter. .

  As shown in FIG. 1C, the partition plate 7 is configured by a plate having a substantially U-shaped cross section. Further, as shown in FIG. 1C, the heat storage layer 8 is contained in an accommodation space 14 surrounded and partitioned by the partition plate 7, the outer wall 1 (inner surface of the outer wall in the example of FIG. 1A), and the floor surface 3. In addition, a large number of grits 13 are filled. In the housing space 14, air can flow through each gap between the grits 13. The heat storage layer 8 takes in the air heat-exchanged with the underground heat in the underground pipe 5, transfers the heat of the air to each of the stones 13, and stores the heat with each of the stones 13. After the replacement, the heat-exchanged air is discharged and supplied into the room from the air outlet 7a. In FIG. 1C, reference numeral 7b denotes a thin plate-like lid portion for closing the upper portion of the accommodation space 14.

  Next, the operation of the first embodiment will be described. When a fan (not shown) is always operated, hot outdoor air in summer (or cold outdoor air in winter) is introduced into the air supply chamber 6 and then the outer pipe 5a of the underground pipe 5 and It is introduced into the gap between the inner pipe 5b, descends there, collides with the bottom 5aa of the outer pipe 5a, reverses, enters the inner pipe 5b, and rises. In these processes, the outdoor hot air in the summer (or the cold outdoor air in the winter) is exchanged with the ground heat that is cooler than the outside air in the summer (or the ground heat that is warmer than the outside air in the winter).

  Thereafter, the air rising in the inner pipe 5b is supplied into the heat storage layer 8 from the air discharge port 5ba at the upper end of the inner pipe 5b, and the air in the heat storage layer 8 (the gaps between the grits 13). ). The air supplied into the heat storage layer 8 is transmitted through the heat storage layer 8 to transmit heat to the grits 13 and to exchange heat with the grits 13. . Then, the air in the said thermal storage layer 8 is supplied indoors from the said blower outlet 7a. In winter, the damper 11 is opened and the lower end of the circulation duct 10 is connected to the air supply chamber 6 so that air can flow. As a result, the air heated by solar heat in the vicinity of the roof 2 is The air is supplied to the gap between the outer pipe 5 a and the inner pipe 5 b of the underground pipe 5 through the air supply chamber 6.

  Each grits 13 in the heat storage layer 8 itself have a heat storage function. Thus, for example, in the summer, each of the stones 13 is heat-exchanged with air from the underground pipe 5 (air that has been cooled by exchanging heat with underground heat) in a night time zone. Since it is sufficiently cooled, the air from the underground pipe 5 is heat-exchanged with each of the stones 13 in the heat storage layer 8 and sufficiently cooled, especially in the hot daytime period. To be supplied. Further, for example, in winter, in the daytime period, each of the grits 13 is air from the underground pipe 5 (air heated by solar heat near the lower side of the roof 2 is the underground pipe 5). The air is then warmed sufficiently by exchanging heat with the ground heat and then further exchanging heat with the underground heat), especially in the cold night time zone, etc. The air is supplied to the room after being heat-exchanged with the grits 13 in the heat storage layer 8 and sufficiently warmed.

As described above, according to the first embodiment, after the outdoor air is sufficiently cooled by exchanging heat with the underground heat and the grits 13 in the heat storage layer 8 in the summer, the air is ground in the winter. After heat is sufficiently exchanged with the medium heat and each of the grits 13 in the heat storage layer 8, they can be supplied indoors. Moreover, in this Embodiment 1, the thermal storage layer 8 which has an above-mentioned air conditioning function (heat exchange function) is made into the outer wall surface of a building (the surface of the inner side of the outer wall 1 in this Embodiment 1), the said partition plate 7, and It is formed by accommodating a number of grits 13 in an accommodation space 14 formed by the floor surface 3. That is, in the first embodiment, the cost of the heat storage layer 8 is greatly increased in both materials and construction by using the outer wall surface of the existing building (in the first embodiment, the surface on the indoor side of the outer wall 1). Can be reduced. Therefore, according to the first embodiment, the heat storage layer 8 can be easily added to the existing building at low cost, and the underground heat and the heat storage layer are added to the existing building. The used building air conditioning system can be easily installed (added) at low cost.
In the example shown in FIGS. 1A to 1C, the air supply chamber 6 and the heat storage layer 8 are installed such that the air supply chamber 6 is installed outside the outer wall 1 and the heat storage layer 8 is installed on the indoor side of the outer wall 1. However, when installing them separately in this way, the installation space for both may be excessive, so the air supply chamber 6 and the heat storage layer 8 are placed in one place. The air supply chamber 6 and the heat storage layer 8 may be installed only on the outdoor side of the outer wall 1 or only on the indoor side of the outer wall 1.
That is, in the first embodiment, as shown in FIGS. 1A to 1C, “the air supply chamber 6 and the heat storage layer 8 are separately installed on the outer side and the inner side of the outer wall”. It is not limited to "the air flow path connecting the outdoor and the heat storage tank" and "the air flow path connecting the underground pipe and the heat storage tank" with "the heat storage layer installed on the outside or inside of the outer wall" It may be formed on the same side so as to be integrated or integrated in the same space as the heat storage layer. In this case, particularly when the heat storage layer is installed outside the outer wall, the underground pipe may be embedded directly under the heat storage layer.

[Second Embodiment]
Next, referring to FIG. 2, a geothermal building air conditioning system including an outer wall side heat storage layer for a low-rise store according to Embodiment 2 of the present invention will be described. Since the basic configuration of the second embodiment is the same as that of the first embodiment, only different parts will be described below.

  In this Embodiment 2, it has the mountain-shaped roof 2a of a low-rise store. In addition, a ventilation fan 21 is provided at the upper end of the mountain roof 2a. In this summer, the ventilation fan 21 can release the air heated by solar heat near the lower side of the mountain roof 2a to the outside. I have to. The other configuration is almost the same as that of the first embodiment. Therefore, the same effects as those of the first embodiment can be obtained by the second embodiment.

[Third Embodiment]
Next, with reference to FIGS. 3A and 3B, a geothermal building air conditioning system including an outer wall side heat storage layer for a gymnasium according to Embodiment 3 of the present invention will be described. Since the basic configuration of the third embodiment is the same as that of the first and second embodiments, only different parts will be described below.

  The gymnasium according to the third embodiment includes a cross-section arc-shaped roof 2b. A ventilating fan 21 is provided at the upper end of the arcuate roof 2b, and in the summer, the air heated by solar heat near the lower side of the arcuate roof 2b is released outdoors in the summer. I can do it. Other configurations are substantially the same as those of the first and second embodiments. Therefore, the same effects as those of the first and second embodiments can be obtained by the third embodiment.

[Fourth Embodiment]
Next, with reference to FIG. 4A and 4B, the underground heat utilization building air conditioning system provided with the outer wall side heat storage layer for dome shaped buildings based on Embodiment 4 of this invention is demonstrated. Since the basic configuration of the fourth embodiment is the same as that of the first to third embodiments, only different parts will be described below.

  In the fourth embodiment, a dome-shaped outer wall (an outer wall that is also formed by integrally forming an outer wall and a roof and also serves as a roof) 22 is provided. An automatic opening / closing hatch 9a is provided at the upper end portion of the dome-shaped outer wall 22, and by this automatic opening / closing hatch 9a, air heated by solar heat in the vicinity of the dome-shaped outer wall 22 can be discharged outdoors in summer. I am doing so. The other configuration is almost the same as that of the first to third embodiments. Therefore, the same effects as in the first to third embodiments can be obtained also in the fourth embodiment.

[Fifth Embodiment]
Next, referring to FIG. 5, a geothermal building air conditioning system including an outer wall heat storage layer according to a fifth embodiment of the present invention will be described. The fifth embodiment is characterized in that the heat storage layer 28 is installed on the ground surface 4 outside the outer wall 1 (in contrast, in each of the first to fourth embodiments, the heat storage layer 8 Is installed on the floor 3 on the indoor side of the outer wall 1).

  That is, in the fifth embodiment, as shown in the side cross-sectional view of FIG. 5A, a flat cross section for forming a substantially rectangular parallelepiped accommodation space on the ground surface 4 on the outer side (the right side in the figure) of the outer wall 1. A substantially U-shaped partition plate 27 is provided. A heat storage layer 28 is formed by accommodating and filling a large number of grits in the accommodation space formed by the partition plate 27. Note that the upper portion of the accommodation space is closed and closed by a lid portion 27c after a large number of grits are received and filled.

  An underground pipe 5 is embedded in the ground surface 4 on the outside (right side in the drawing) of the accommodation space (or the heat storage layer 28). And the outside air introduction port 5ab of the upper end of the outer pipe 5a of the underground pipe 5 is arranged so that outdoor air can be taken in. Also, an air discharge port 5ba at the upper end of the inner pipe 5b of the underground pipe 5 (an air discharge port for supplying air heat-exchanged with underground heat in the underground pipe 5 into the heat storage layer 28). Is disposed in the heat storage layer 28.

  In addition, an outlet pipe 27b is disposed in the heat storage layer 28 in the upper part of the figure. One opening end portion of the blowout pipe 27b is disposed toward the indoor side, and serves as a blowout port 27a that supplies the air heat-exchanged in the heat storage layer 28 to the room.

  As described above, in the fifth embodiment, the heat storage layer 28 is different from the first to fourth embodiments in that the heat storage layer 28 is installed outside the outer wall 1. The basic structure is the same, in which heat is exchanged with the underground heat while being introduced into the heat exchanger, and then the air is sent into the heat storage layer 28, where it is also heat exchanged and supplied to the room. Therefore, also according to the fifth embodiment, substantially the same operational effects as those of the first to fourth embodiments can be achieved. In FIG. 5A, the accommodation space is configured by a partition plate 27 having a substantially U-shaped cross section and an outer surface of the outer wall 1 (that is, a building-side surface that divides the accommodation space). (See also FIG. 1C), but in the present invention, the housing space may be formed by a partition plate having a substantially square cross section. . Further, in the example shown in FIG. 5A, the bottom surface of the housing space is configured by a plate-like member such as a plate or concrete, but the plate-like member constituting the bottom surface is eliminated and the housing is accommodated. The bottom surface of the space may be configured by the ground surface 4.

  Next, FIG.5 (b) is a sectional side view which shows the modification of this Embodiment 5. FIG. In this modification, as shown in FIG. 5 (b), the underground pipe 5 is grounded from the ground surface 4 on the outside (right side in the drawing) of the accommodation space (or the heat storage layer 28) formed by the partition plate 27 or the like. It is buried in the ground not from the inside but from the ground surface 4 below the accommodation space (or the heat storage layer 28). Therefore, in this modification, the portion above the ground surface 4 of the underground pipe 5 is disposed in the heat storage layer 28, and only the outside air inlet 5ab at the upper end of the outer pipe 5a of the underground pipe 5 is The outside space is exposed to the outside so as to be able to take in outside air from the housing space (the partition plate 27) toward the outside. Also by such a modification, the same effect as the example shown to the said Fig.5 (a) can be show | played.

[Sixth Embodiment]
Next, with reference to FIG. 6, the underground heat utilization building air conditioning system provided with the outer wall side heat storage layer based on Embodiment 6 of this invention is demonstrated. In the sixth embodiment, the storage space 34 for storing a large number of grits 13 constituting the heat storage layer 28 is formed in a substantially box-shaped container (upper side) manufactured as a product that can be moved and transported independently of the outer wall 1. (In contrast, in each of the first to fifth embodiments, the accommodation space in which a large number of grits 13 are accommodated) Alternatively, the heat storage layer 8, 28) is formed using the outer wall 1 of the building).

  That is, in the sixth embodiment, the container 37 is manufactured at a factory or the like as a product that can be moved and transported independently by a heat insulating material such as wood, plastic, foam, or concrete. In addition, an inlet 37b for introducing air from the inner pipe 5b of the underground pipe 5 into the container 37 is formed in the lower part of the container 37. The blower outlet 37a for supplying the air from the inside to the room | chamber 37 is formed.

  In FIG. 6, reference numeral 37 c denotes a lid for closing the opening above the container 37 (the upper part of the accommodation space 34) after filling the container 37 with a large number of grits 13. In addition, in FIG. 6, the configuration for introducing the air from the outside into the gap between the outer pipe 5 a and the inner pipe 5 b of the underground pipe 5 is the same as that of each of the first to fifth embodiments. Is omitted.

  As described above, according to the sixth embodiment, in addition to the same basic effects as those of the first to fifth embodiments, the heat storage layer 28 can be moved and transported independently of the outer wall 1. For example, the heat storage layer 28 can be formed simply by transporting and installing the container 37 mass-produced in a factory to a desired position in a building. Construction can be performed at an extremely low cost and efficiently.

  As mentioned above, although each embodiment of this invention was described, this invention is not restricted to this, A various change is possible. For example, in each of the first to sixth embodiments, each of the underground pipes 5 has the outer pipe 5a after the air from the outside is introduced and lowered into the gap between the outer pipe 5a and the inner pipe 5b. However, in the present invention, the underground pipe 5 is connected to the heat storage layers 8 and 28 after being collided at the bottom of the tube, reversed and then moved up into the inner tube 5b. After the air from the outside is introduced and lowered into the inner pipe 5b, it collides with the bottom of the outer pipe 5a, reverses it, puts it in the gap between the outer pipe 5a and the inner pipe 5b, and raises the inside. You may comprise as what supplies in the said thermal storage layer 8,28.

  In each of the first to sixth embodiments, regarding the relationship between the underground pipe 5 and the heat storage layers 8 and 28, first, air is first exchanged with underground heat in the underground pipe 5, and then The air exchanged with the ground heat is supplied to the heat storage layers 8 and 28 and further heat exchanged there, and thus the air exchanged in two stages is supplied indoors. However, in the present invention, contrary to the above, first, air from the outside is taken into the heat storage layers 8 and 28 and heat exchange is performed there, and the air that has been heat exchanged inside the heat storage layers 8 and 28 is further grounded. The air that has been introduced into the middle pipe 5 and exchanged with the underground heat and thus exchanged heat in two stages may be supplied from the underground pipe 5 into the room.

  Further, in each of the first to sixth embodiments, the heat storage layers 8 and 28 are configured by storing and filling a large number of grits 13 in the storage spaces 14 and 34. In the present invention, Without being limited thereto, for example, in the housing spaces 14 and 34, instead of the large number of grits 13, conventionally known heat storage bodies having a heat storage function (for example, liquid at about 20 to 23 ° C.) Contain and fill a known heat storage body that transitions from a gel to a gel, or a stone or rock that itself has a function of absorbing, releasing moisture or purifying air (for example, a heat storage body made of a material such as zeolite rock or diatomite). The heat storage layers 8 and 28 may be configured as described above. Further, in each of the first to sixth embodiments, the heat storage layers 8 and 28 are both disposed above the ground surface 4, but in the present invention, the heat storage layers 8 and 28 are disposed on the ground surface. You may make it extend not only above 4 but to the underground below the ground surface 4. FIG.

DESCRIPTION OF SYMBOLS 1 Outer wall 2 Roof 2a Yamagata roof 2b Cross-section arc-shaped roof 3 Floor 4 Ground surface 5 Underground pipe 5a Outer pipe 5aa Bottom part 5ab Outside air introduction port 5b Inner pipe 5ba Upper end part 5ba Air outlet 6 Air supply chamber 6a Suction port 7, 27 Partition plate 7a Air outlet 8, 28 Heat storage layer 9a Automatic opening / closing hatch 10 Circulating duct 11 Damper 13 Grindstone 14, 34 Housing space 21 Ventilation fan 27a Air outlet 27b Air outlet 27b, 37c Lid pipe 37 Container 37a Air outlet 37b Inlet

Claims (4)

An underground pipe that is buried in the ground and exchanges heat with underground heat while circulating outside air taken in from the outside,
The circulation of air is possible through the gaps between the numerous heat storage elements provided inside, and the outside air circulation allows heat exchange with each of the heat storage elements while circulating the outside air taken in from the outside. An external air circulation heat storage layer connected to the underground pipe so as to be able to distribute air,
A ventilation fan that takes in outside air from the outside and distributes the taken outside air inside the outside air circulation heat storage layer and the underground pipe, and then supplies it to the interior of the building,
The outdoor air circulation heat storage layer is a region on the ground adjacent to the outer wall surface outside the building, and a large number of heat storage members are accommodated in a partition space extending upward from a region on the ground that extends along the outer wall surface. The ventilation system in a building provided with the outer wall side outdoor air circulation heat storage layer formed by the thing . An underground pipe that is buried in the ground and exchanges heat with underground heat while circulating outside air taken in from the outside,
The circulation of air is possible through the gaps between the numerous heat storage elements provided inside, and the outside air circulation allows heat exchange with each of the heat storage elements while circulating the outside air taken in from the outside. An external air circulation heat storage layer connected to the underground pipe so as to be able to distribute air,
A ventilation fan that takes in outside air from the outside and distributes the taken outside air inside the outside air circulation heat storage layer and the underground pipe, and then supplies it to the interior of the building,
The outdoor air circulation heat storage layer is a region on the floor surface close to the outer wall surface inside the building, and a large number of heat storage members are formed in a partition space extending upward from a region on the floor surface elongated along the outer wall surface. The ventilation system in a building provided with the outer wall side external air circulation heat storage layer formed by being accommodated . The ventilation system in a building provided with the outer wall side outdoor air circulation heat storage layer according to claim 1 or 2 , wherein at least one surface of the partition space in which each heat storage body is accommodated is defined by an outer wall surface . The internal space ventilation system according to claim 1 or 2, wherein the partition space in which each heat storage body is housed is partitioned from the outside by a substantially box-shaped container .

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