JP2014234947A - Outdoor air introduction air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor air introduction air conditioning system capable of implementing heat exchange at low cost using a corrugated heat transfer plate material, and preventing degradation in heat recovery efficiency if the corrugated heat transfer plate material is simply arranged.SOLUTION: A heat exchange unit 13 of an outdoor air introduction air conditioning system includes: a heat exchanger main body 14; an inlet chamber 151 that is an outdoor air introduction side; and an outlet chamber 152 that is a conditioned outdoor air supply side, and implements heat exchange between introduced outdoor air and an underfloor base concrete (geothermal layer). The heat exchanger main body 14 includes a triangular wave-shaped heat transfer plate material 14a having convex and concave portions arranged alternately; and a casing 14b covering this heat transfer plate material 14a. Two heat transfer plate materials 14a are arranged in a direction of a heat exchange channel and the convex and concave portions of the two heat transfer plate materials 14a deviate in phase.

Description

  The present invention relates to an outside air introduction air conditioning system installed under a floor of a building.

  Patent Document 1 discloses an air conditioning system using geothermal heat that air-conditions outside air with geothermal heat and takes it indoors. The air conditioning system includes a basic concrete of a house insulated from the ground surface outside the house by underground heat insulating material laid around the earth, a geothermal heat exchanger having a plurality of heat transfer fins for transferring heat to the passing air, and the geothermal heat A heat transfer plate installed between the transmitter and the foundation concrete, wider than the bottom surface of the geothermal heat exchanger, and a geothermal heat transfer path through which outside air taken from outside passes through the geothermal heat exchanger and is taken indoors; A bypass path through which the outside air taken in from outside is taken into the room without being air-conditioned, and a first switching means for flowing the outside air taken in from outside to either the geothermal heat transfer path or the bypass path.

  Moreover, according to the said patent document 1, a geothermal heat exchanger is installed in contact with the whole bottom face on a geothermal heat exchanger stand with small heat resistance. The geothermal heat exchanger base is installed on a heat transfer plate made of copper, aluminum or the like having a high thermal diffusivity.

Japanese Patent No. 3562527

  However, since the geothermal heat exchanger used in the conventional geothermal air conditioning system has a plurality of heat transfer fins, it is generally expensive and has a drawback of high installation cost.

  In view of the above circumstances, the present invention enables heat exchange at a low cost by using a corrugated plate-like heat conducting plate material, and improves the heat recovery efficiency when the corrugated plate-like heat conducting plate material is simply arranged. It is an object of the present invention to provide an outside air introduction air conditioning system that can prevent a decrease.

  In order to solve the above problems, an outside air introduction air conditioning system according to the present invention is an outside air introduction air conditioning system arranged in a space under a floor of a building, and is introduced by an outside air introduction unit for introducing outside air and the outside air introduction unit. A heat exchange section that exchanges heat between the outside air passage through which the outside air passes and the geothermal layer under the floor, and an outside air supply section that guides the outside air conditioned through the heat exchange section into the building. The heat exchanging portion covers the geothermal layer with a corrugated plate-like heat conducting plate having alternating convex portions and concave portions, and accommodates the heat conducting plate in a casing, thereby providing a plurality of heat exchanging channels. The outside air in contact with the geothermal layer below the convex part and the outside air passing above the concave part are interchanged or mixed in the middle of the heat exchange flow path. .

  If it is said structure, in the said heat exchanging part, the said geothermal layer will be covered with a corrugated sheet-like heat conduction board material, and a several heat exchange flow path will be formed, and heat exchange can be performed. The corrugated plate-like heat conduction plate material can be obtained at a lower cost than a conventional geothermal heat exchanger having a large number of fins, and can realize an outside air introduction air conditioning system capable of heat exchange at a low cost. it can. Furthermore, the outside air that has contacted the geothermal layer below the convex portion and the outside air that has passed above the concave portion are interchanged or mixed in the middle of the heat exchange flow path, so that the corrugated plate-like heat conduction It is possible to prevent a decrease in heat recovery efficiency when the plate material is simply arranged.

  A plurality of corrugated plate-like heat conductive plates may be arranged with a phase shifted in the flow direction of the outside air. According to this, the outside air that has contacted the geothermal layer on the lower side of the convex portion and the outside air that has passed on the upper side of the concave portion are interchanged or mixed in the middle of the heat exchange flow path with a simple structure of phase shifting arrangement. Is done. Further, in this configuration, the partition plate for exchanging the outside air in contact with the geothermal layer below the convex portion and the outside air passing above the concave portion in the middle of the heat exchange flow path is the plurality of heats. It may be arranged between the conductive plate materials.

  The wave density of the corrugated plate-like heat conducting plate material may be higher on the outside air outlet side than on the outside air inlet side of the heat exchange section. According to this, the heat exchange force at the outside air outlet side can be increased.

  The outside air inlet side two-layer portion in which the corrugated heat conductive plate material is arranged in two layers, and the outside air outlet side two layer portion in which the corrugated heat conduction plate material is arranged in two layers, Passes through the lower layer of the two layers on the outside air side while contacting the geothermal layer, and passes from the middle through the upper layer of the two layers on the outside air outlet side, and the outside air is formed on the two layers on the outside air inlet side. A second flow path that passes through the upper layer and passes through the lower layer of the two layers on the outside air outlet side while being in contact with the geothermal layer may be formed.

  With the outside air introduction air conditioning system of the present invention, heat exchange can be performed at low cost using a corrugated plate-like heat conduction plate material, and the heat recovery efficiency when the corrugated plate-like heat conduction plate material is simply arranged can be reduced. There is an effect that it can be prevented.

It is explanatory drawing which showed schematic structure of the building provided with the external air introduction | air-conditioning system of this invention. It is explanatory drawing which showed the detail of the external air introduction | transduction air conditioning system of FIG. It is explanatory drawing which showed the detail of the heat exchange part in the external air introduction | air-conditioning system of FIG. It is explanatory drawing which showed the state which installed the heat exchange part in the external air introduction | air-conditioning system of FIG. 1 on the foundation concrete under a floor. It is explanatory drawing which showed the state which installed the heat exchange part of the other structural example in the external air introduction | air-conditioning system of FIG. 1 on the basic concrete. It is explanatory drawing which showed the state which installed the heat exchange part of the other structural example in the external air introduction | air-conditioning system of FIG. 1 on the basic concrete. 1A is an explanatory view showing a heat exchanging portion of another configuration example in the outside air introduction air conditioning system of FIG. 1, and FIG. 1B is an explanatory view schematically showing a cross section aa. . 7A is a schematic diagram of the AA cross section of FIG. 7, FIG. 5B is a schematic diagram of the BB cross section of FIG. 7, and FIG. It is the schematic of a cross section. 1A is a front side explanatory view showing a heat exchange part of another configuration example in the outside air introduction air conditioning system of FIG. 1, FIG. 1B is a rear side explanatory view, and FIG. It is side surface explanatory drawing, The same figure (D) is the plane explanatory drawing which showed the 1st flow path of the heat exchange part. FIG. 9A is a plan view showing a second flow path of the heat exchange section of FIG. 9, and FIG. 10B is a side view. It is explanatory drawing which showed the heat exchange part of the other structural example in the external air introduction | air-conditioning system of FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1 and FIG. 2, an outside air introduction air conditioning system 1 according to an embodiment of the present invention exchanges heat with an outside air introduction unit 11 that introduces outside air into a duct 12 disposed under a floor 5 of a building 2. And an outside air supply unit 16 that guides the outside air that has been air-conditioned through the heat exchanging unit 13 to the room 4.

  One end side of the outside air introduction pipe 11a connected to the outside air introduction part 11 passes through the rising foundation part 3a of the foundation concrete (geothermal layer) 3 under the floor and is taken out outdoors. A hood for preventing rainwater from entering is provided on the one end side. The other end of the outside air introduction pipe 11a is connected to a filter box 11b that removes dust and pollen. The top plate portion of the filter box 11b has a lid portion that can be opened and closed so that the filter can be replaced. Further, a duct fan 11c is provided on the downstream side of the filter box 11b. The outside air is introduced into the outside air introduction air conditioning system 1 by the outside air suction by the duct fan 11c.

  The downstream side of the duct fan 11c is connected to the duct 12. If the duct 12 is made of a material such as a metal having a high thermal conductivity, the duct 12 itself has a function of exchanging heat with the air in the underfloor space. Of course, the duct 12 itself may not have such a heat exchange function.

  The heat exchanging section 13 includes a heat exchanging body section 14, an inlet chamber 151 on the outside air introduction side, and an outlet chamber 152 on the air conditioning outside air supply side, and the introduced outside air and the foundation concrete (geothermal layer) 3 under the floor. Heat exchange with the. The inlet chamber 151 is connected to the duct 12, and the outlet chamber 152 is connected to the outside air supply unit 16. The heat exchange with the foundation concrete 3 is not the use of a deep geothermal layer at a deep depth (5 m to 10 m), but a shallow geothermal layer that uses the surface heat of the floor base plate or a layer close to the surface. Therefore, there is an advantage that the cost for ground excavation is reduced.

  As shown in FIG. 3, the heat exchange main body 14 is composed of a triangular wave-shaped heat conductive plate 14a having convex portions and concave portions alternately, and a casing 14b covering the heat conductive plate material 14a.

  The heat conductive plate 14a is made of a metal having excellent heat conductivity, such as stainless steel or aluminum alloy, and can be deformed in the vertical direction. And as shown also in FIG. 4, it is provided so that the recessed part bottom face in the said heat conductive board | plate material 14a may contact | connect the surface of the said foundation concrete 3. As shown in FIG. The upper side of the concave portion is covered by the casing 14b to form a heat exchange channel, and the lower side of the convex portion forms a heat exchange channel by the foundation concrete 3.

  The heat conductive plate material 14a is divided into two pieces in the direction of the heat exchange flow path. The two heat conductive plate members 14a are arranged so that the phases of the concave portion and the convex portion are shifted from each other. In this embodiment, the positional relationship between the concave portion and the convex portion is reversed by shifting the phase by 180 degrees. I am doing so. In the example shown in FIGS. 3 and 4, the outside air in contact with the surface of the foundation concrete 3 on the lower surface side of the convex portion of the first heat conductive plate 14a located on the inlet chamber 151 side is the outlet. It passes through the upper surface side of the concave portion or the lower surface side of the convex portion of the second heat conductive plate 14a located on the chamber 152 side. Similarly, the outside air passing through the upper surface side of the concave portion of the first heat conductive plate member 14a passes through the lower surface side of the convex portion of the second heat conductive plate material 14a and comes into contact with the surface of the foundation concrete 3 or the upper surface side of the concave portion. Pass through. That is, outside air that has contacted the basic concrete 3 below the convex portion of the heat conductive plate 14a and outside air that has passed above the concave portion are mixed in the middle of the heat exchange flow path.

  A flange portion 13 a is formed at the peripheral edge of the heat exchange portion 13, and the heat exchange portion 13 is fixed to the foundation concrete 3 by screws 13 b screwed into the flange portion 13 a. Further, a packing (sealing material) 13 c is interposed between the flange portion 13 a and the foundation concrete 3.

  The heat conductive plate material 14a is a corrugated plate material having convex portions and concave portions alternately as described above, and such a corrugated plate material can be obtained at a lower cost than a geothermal transmitter having many fins. It is. Thereby, the external air introduction air conditioning system 1 can be comprised at low cost.

  The heat conductive plate 14a can be deformed, and the bottom surface of the recess in the heat conductive plate 14a in the casing 14b is caused by its own weight or by the pressing force when the casing 14b is fixed to the foundation concrete 3. It adheres to the surface of the foundation concrete 3. That is, even if the foundation concrete 3 is uneven, since the heat conductive plate 14a can be deformed, the heat conductive plate 14a can make the bottom side of the recess closely contact the uneven portion of the geothermal layer. .

  In the heat exchanging section 13, the foundation concrete 3 is covered with the corrugated heat conductive plate material 14a to form a plurality of heat exchanging flow paths and heat exchange can be performed. And the said heat conductive board | plate material 14a can be obtained cheaply compared with the conventional geothermal heat exchanger which has many fins, and can implement | achieve the external air introduction air conditioning system which can perform heat exchange at low cost. Furthermore, since the outside air that has passed through the convex side of the heat conducting plate 14a and the outside air that has passed through the concave side are mixed in the middle of the heat exchange flow path, the heat recovery efficiency when simply using a corrugated plate is used. Can be prevented. In addition, as described above, when a plurality of heat conduction plate members 14a are used, the heat exchange performance as a whole is facilitated because it is more likely to come into contact with the non-land portion of the foundation concrete 3 as compared with a single piece of heat conduction plate material. Will improve.

  In the above example, two heat conductive plate members 14a are arranged in the direction of the heat exchange flow path, but it is also possible to arrange a larger number such as three or four. Further, the wave phases of the plurality of heat conductive plate members are not limited to be shifted by 180 degrees, but may be shifted by a different angle.

  The corrugated plate shape of the heat conducting plate 14a is not limited to a triangle, but may be a quadrangular shape. If the phase of the plurality of heat conductive plate members having the quadrangular shape is shifted by 180 degrees, the convex portions and the concave portions are connected without being shifted to form a flow path. The outside air in contact with the surface of the foundation concrete 3 surely passes through the upper surface of the concave portion of the second heat conductive plate. Similarly, the outside air passing through the upper surface side of the concave portion of the first heat conductive plate material passes through the lower surface side of the convex portion of the second heat conductive plate material and reliably contacts the surface of the foundation concrete 3. That is, when the wave phase of the heat conducting plate material having a square shape is shifted by 180 degrees, the outside air passing through the convex side and the outside air passing through the concave side are switched in the middle of the heat exchange flow path. Become. On the other hand, if the angle to be shifted is other than 180 degrees, the configuration is such that the outside air comes into contact with (contacts with) the end face of the heat conducting plate material, so that improvement in heat exchange efficiency due to this contact can be expected.

  5 and 6 show a heat exchange body 14A of another configuration example in the heat exchange unit 13. FIG. The heat exchange main body 14A has a configuration in which a partition plate 14c is provided between the two heat conductive plate members 14a in the heat exchange main body 14. A plurality of communication openings 14d are formed in the partition plate 14c, and heat exchange is performed from the convex portion side of the first heat conduction plate member 14a to the concave portion side of the second heat conduction plate member 14a through the communication opening 14d. A flow path is formed, and a heat exchange flow path is formed from the concave side of the first heat conductive plate 14a to the convex side of the second heat conductive plate 14a through the communication opening 14d. That is, the outside air that has passed through the convex portion side and the outside air that has passed through the concave portion side are interchanged in the middle of the heat exchange flow path.

  With such a configuration, the outside air in contact with the surface of the foundation concrete 3 on the lower surface side of the convex portion of the first sheet of heat conductive plate 14a is surely located on the upper surface side of the concave portion of the second sheet of heat conductive plate 14a. Pass through. Similarly, the outside air passing through the upper surface side of the concave portion of the first heat conductive plate material 14a can contact the surface of the foundation concrete 3 through the lower surface side of the convex portion of the second heat conductive plate material 14a.

  FIGS. 7A and 7B show a heat exchange main body 14 </ b> B of another configuration example in the heat exchange unit 13. 8A is a schematic diagram of the AA cross section of FIG. 7, FIG. 8B is a schematic diagram of the BB cross section of FIG. 7, and FIG. 8C is a schematic diagram of C of FIG. It is the schematic of a -C cross section. The heat exchange main body 14B is composed of three divided heat conductive plate materials 141, 142, and 143 and a casing 14b that covers these heat conductive plate materials 141, 142, and 143. The heat conductive plate materials 141, 142, and 143 are made of a metal having excellent heat conductivity, such as stainless steel or aluminum alloy, and can be deformed independently of each other. The bottom surfaces of the recesses in the heat conductive plates 141, 142, and 143 are provided in contact with the foundation concrete 3, and the upper side of the recesses is covered by the casing 14b to form a heat exchange flow path. Further, the lower side of the convex portion faces the basic concrete 3 to form a heat exchange channel.

  The heat conductive plate 141, the heat conductive plate 142, and the heat conductive plate 143 are arranged in this order from the inlet chamber 151 to the outlet chamber 152. The wave density (fin pitch) of the heat conductive plate member 142 is higher (shorter) than the density (fin pitch) of the heat conductive plate member 141, and the wave density (fin pitch) of the heat conductive plate member 143 is that of the heat conductive plate member 142. Higher (shorter) than wave density (fin pitch). That is, the wave density of the heat conduction plate material arranged on the outside air port side is higher than the wave density of the heat conduction plate material arranged on the outside air inlet side of the heat exchange unit 13.

  Even in such a configuration, the outside air that has passed through the convex portions of the heat conducting plates 141, 142, and 143 and the outside air that has passed through the concave portions are mixed in the middle of the heat exchange flow path. Further, although the wave density of the heat conducting plate 141 on the outside air inlet side is sparse, the difference between the temperature of the introduced outside air and the temperature of the foundation concrete 3 is large, and the heat exchange rate per unit area is high. High heat exchange power can be obtained. On the other hand, in the heat conduction plate materials 142 and 143 on the outside air outlet side, since the heat exchange has already been performed to some extent, the temperature of the introduced outside air is high (or low), and the heat exchange efficiency per unit area is reduced. However, since the wave density is high (dense), a high heat exchange force can be obtained.

  Further, the structure in which the wave density of the heat conductive plate materials 141, 142, and 143 gradually increases in the direction toward the outlet side does not uniformly increase the wave density, and therefore it is possible to suppress an increase in air resistance.

  FIG. 9 and FIG. 10 show a heat exchange main body 14 </ b> C of another configuration example in the heat exchange unit 13. The heat exchange main body 14C is partitioned into a two-layer structure of a lower layer and an upper layer. FIG. 9A shows the front side of the heat exchange main body 14C, and FIG. 9B shows the back side. Moreover, the figure (C) has shown the side, and the figure (D) has shown the 1st flow path of the heat exchange part of FIG. Furthermore, FIG. 10 (A) shows the second flow path of the heat exchanging part of FIG. 9, and FIG. 10 (B) shows the side surface. Moreover, in the said figure, the heat conductive board material 144 which comprises a 1st flow path is shown with the continuous line, and the heat conductive board material 145 which comprises a 2nd flow path is shown with the dotted line. Further, the outside air in contact with the foundation concrete 3 is indicated by a black arrow, and the outside air not in contact is indicated by a white arrow.

  The heat conduction plate member 144 and the heat conduction plate member 145 having a triangular shape in plan view are laminated on the outside air inlet side of the heat exchange main body 14C, and the flow path and the heat conduction by the heat conduction plate member 144 are arranged. The flow paths by the plate material 145 are three-dimensionally crossed. Similarly, the heat conduction plate member 144 and the heat conduction plate member 145 having a triangular shape in a plan view are laminated on the outside air outlet side of the heat exchange main body 14C, and the flow path by the heat conduction plate member 144 is The flow paths formed by the heat conductive plate material 145 cross each other. Furthermore, the top and bottom arrangement of the heat conductive plate member 144 and the heat conductive plate member 145 is reversed on the outside air outlet side. Further, a location other than the location where the heat conductive plate material 144 and the heat conductive plate material 145 are stacked in a triangular shape is a space where nothing is provided.

  In the first flow path, outside air passes between the heat conductive plate 144 located on the lower layer side and the foundation concrete 3 in the triangular portion on the outside air inlet side, and then the outside air on the outside air outlet side. It passes through the flow path by the heat conductive plate 144 located on the upper layer side in a triangular portion. On the other hand, in the second flow path, outside air passes through the flow path formed by the heat conductive plate member 145 located on the upper layer side in the triangular portion on the outside air inlet side, and then the triangular shape on the outside air outlet side. It passes between the said heat conductive board | plate material 145 and the said foundation concrete 3 which are located in the lower layer side in the part which comprises. That is, in the heat exchanging main body 14C, the corrugated plate-like heat conducting plates 144, 145 are arranged in two layers, and the outside air inlet side two-layer portion and the corrugated plate-like heat conducting plates 144, 145 are arranged in two layers. An outside air outlet side two-layer portion, and the first flow path through which the outside air passes through the lower layer of the outside air inlet side two layer portion and passes through the upper layer of the outside air outlet side two layer portion midway, The second flow path is formed in which the outside air passes through the upper layer of the two layers on the outside air inlet side and passes through the lower layer of the two layers on the outside air outlet side.

  In such a configuration, the introduced outside air can surely exchange heat with the foundation concrete 3 in either the first half or the second half in the first and second flow paths intersecting three-dimensionally.

  FIG. 11 shows a heat exchange main body 14D of another configuration example of the heat exchange unit 13. The heat exchange main body 14D includes, for example, a single square wave heat conductive plate 146 having convex portions and concave portions. A plurality of through-holes 146a are formed in the vertical surface portion of the heat conductive plate 146, and the through-holes 146a function so as to penetrate through and connect adjacent flow paths on the convex side and flow path on the concave side. . The through hole 146a can be formed in a corrugated state, but if the corrugated sheet is formed of a punching metal plate, the through hole 146a can be easily formed.

  In the heat exchange main body 14D, the outside air in contact with the surface of the foundation concrete 3 on the lower surface side of the convex portion of the heat conducting plate 146 basically proceeds in the direction of the outlet chamber 152 as it is, The outside air that passes between the upper surface of the concave portion of the heat conductive plate 146 and the casing 14b also basically proceeds in the direction of the outlet chamber 152 as it is, but the through hole 146a is formed so that A part of the airflow flowing through the channel and the part of the airflow flowing through the channel on the concave side are mixed.

  Here, since the heat radiation area is smaller in the central portion than in the peripheral portion of the heat exchange main body portion 14D, for example, in heat exchange in summer, the temperature tends to rise in the central portion of the heat exchange main body portion 14D. For this reason, also in the basic concrete 3 under the said heat exchange main-body part 14D, a center part tends to become high temperature.

  As described above, when the through hole 146a is formed in the heat conductive plate 146, the air in the peripheral part of the heat exchange main body part 14D and the air in the central part are mixed, so the temperature rises in the central part. And it becomes easy to eliminate the temperature unevenness as described above.

  Even in a structure using a triangular wave-shaped heat conductive plate instead of the square-wave heat conductive plate 146, the through-hole 146a can be formed to mix the airflow.

  Note that the outside air supply unit 16 that guides the outside air that has been air-conditioned through the heat exchanging unit 13 to the room is not limited to the one that directly introduces the air-conditioned outside air into the room 4, but as a precooling air supply via an air conditioner. Further, air conditioning may be performed to supply the room 4.

  In winter, the heat in the foundation concrete 3 can be given to the outside air in the heat exchange unit 13. However, since it is not warm enough to be used for heating as it is, it is desirable to use it as preheating air supply for the heating device.

  Moreover, in the outside air introduction air conditioning system 1, the duct 12 is not limited to be linearly arranged, and may be arranged in a meandering manner. Further, the air-conditioned outside air outlet may be provided not only in the living room but also in the hallway. Moreover, you may provide the lid | cover which enables access to the under floor in the location different from the said lid | cover 5a for the inspection of the said external air introduction air conditioning system 1. FIG.

  Moreover, since the temperature under the floor of the central part of the building 2 is more stable than the peripheral edge side, it is desirable that the heat exchanging part 13 is arranged under the floor of the central part of the building 2.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 1 Outside air introduction air-conditioning system 11 Outside air introduction part 12 Duct 13 Heat exchange part 14, 14A, 14B, 14C Heat exchange main-body part 14a Thermal conduction board material 14b Casing 14c Partition plate 14d Communication opening 141 Thermal conduction board material 142 Thermal conduction board material 143 Thermal conduction board material 144 Heat conduction plate 145 Heat conduction plate 151 Inlet chamber 152 Outlet chamber 16 Outside air supply part 2 Building 3 Foundation concrete 4 Indoor 5 Floor

Claims (6)

An outside air introduction air conditioning system arranged in a space under the floor of a building, between an outside air introduction portion for introducing outside air, an outside air flow path through which the outside air introduced by the outside air introduction portion passes, and the geothermal layer under the floor A heat exchanging unit that performs heat exchange, and an outside air supply unit that guides outside air that has been air-conditioned through the heat exchanging unit, into the building,
The heat exchanging portion covers the geothermal layer with a corrugated plate-like heat conducting plate having alternating convex portions and concave portions and houses the heat conducting plate in a casing to form a plurality of heat exchanging flow paths. And
The outside air introduction air conditioning system characterized in that outside air that has contacted the geothermal layer below the convex portion and outside air that has passed above the concave portion are interchanged or mixed in the middle of the heat exchange flow path.   The outside air introduction air conditioning system according to claim 1, wherein a plurality of corrugated plate-like heat conduction plates are arranged with a phase shifted in a flow direction of the outside air.   The outside air introduction air conditioning system of Claim 2 WHEREIN: The partition plate for replacing the external air which contacted the said geothermal layer under the said convex part, and the external air which passed through the upper side of the said recessed part in the middle of the said heat exchange flow path Is arranged between the plurality of heat conductive plate members.   The outside air introduction air conditioning system according to any one of claims 1 to 3, wherein the wave density of the corrugated plate-like heat conduction plate material is higher on the outside air outlet side than the outside air inlet side of the heat exchange unit. Outside air introduction air conditioning system characterized by   The outside air introduction air conditioning system according to claim 1, wherein a through hole is formed in the corrugated plate-like heat conductive plate material, and the outside air that contacts the geothermal layer below the convex portion by the through hole and the concave portion. The outside air introduction air conditioning system, wherein the outside air passing through the upper side of the air is mixed in the middle of the heat exchange flow path.   The outside air introduction air conditioning system according to claim 1, wherein the corrugated plate-like heat conduction plate is arranged in two layers, the outside air inlet side two-layer portion, and the corrugated plate-like heat conduction plate is arranged in two layers. A first flow in which the outside air passes through the lower layer of the outer air inlet side two-layer portion while contacting the geothermal layer and passes through the upper layer of the outer air outlet side two-layer portion from the middle. And a second flow path through which the outside air passes through the upper layer of the outer air inlet side two-layer portion and passes through the lower layer of the outer air outlet side two-layer portion while being in contact with the geothermal layer. An air conditioning system that introduces outside air.

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