JP7018862B2 - Double skin structure, air conditioning system and how to operate the air conditioning system - Google Patents

Description

The present invention relates to a double skin structure, an air conditioning system and a method of operating the air conditioning system.

Conventionally, a double structure of windows and walls called a double skin has been known for the purpose of reducing the once-through load of a building, reducing the load of solar radiation in summer, and utilizing the heat of solar radiation in winter. For example, a general double skin has a structure composed of an outdoor glass (outer glass), an indoor glass (inner glass), and a hollow layer (hereinafter referred to as “buffer space”) between them.

Regarding the conventional double skin of this kind, there is, for example, "double skin of a building" (Patent Document 1). This is a building in which the partition materials that partition the indoor space and the outside of the building and make up the outer wall and windows are arranged in double inside and outside at intervals from each other, and an air layer is defined between these partitions. In the double skin, two upper and lower outdoor vents are provided in the upper part and the lower part of the air layer in communication with the outside of the building, respectively, and the upper part and the lower part of the air layer are provided in communication with the indoor space of the building, respectively. Two indoor vents above and below, and the upper and lower parts of the air layer, respectively, are provided in the upper and lower parts of the air layer, and either the outdoor vent or the indoor vent is selected for the air layer. It was equipped with two upper and lower communication switching mechanisms for communication.

According to this conventional technique, one of the outdoor space and the indoor space is appropriately selected for the air layer by the upper and lower two communication switching mechanisms provided at the upper part and the lower part of the air layer, depending on the season and conditions. By communicating, the air conditioning load of the indoor air conditioning equipment was reduced in summer and winter regardless of the season.

Japanese Patent Application Laid-Open No. 2002-256637

However, in the double skin of the prior art, it is necessary to first provide a movable mechanism called a communication switching mechanism in the upper part and the lower part of the air layer in the double skin, which complicates the structure and increases the cost accordingly. Furthermore, the double skin of the conventional technology has openings that lead to the outside of the room above and below the buffer space, so that the hollow layer receives the wind pressure of the outside, so the inner glass is given the same wind pressure resistance as the outer glass. It is necessary to do so, which leads to further cost increase.

The present invention has been made in view of the above points, and an object of the present invention is to improve the configuration of a double-skin double-skin of the prior art and to solve the above-mentioned problems.

In order to achieve the above object, the present invention has a double-skin structure having a buffer space between the inner glass on the indoor side, the outer glass on the outdoor side, and the inner glass and the outer glass, and the buffer is provided. A shaft portion having a flow path in the vertical direction is formed on the side of the space, an opening through which air can flow between the shaft portion and the buffer space is formed below the shaft portion, and the shaft portion is the double. Communication with the return air flow path or the outside air introduction system flow path of the room where the skin is installed can be switched, and the upper part of the buffer space is the air supply system flow path or the exhaust of the room where the double skin is installed. The feature is that the communication with the system flow path can be switched.

According to the present invention, the shaft portion can be switched to communicate with the return air system flow path or the outside air introduction system flow path of the chamber in which the double skin is installed, and the upper part of the buffer space is the double skin. Since the communication with the air supply system flow path or the exhaust system flow path of the room where the room is constructed can be switched, the return air or outside air from the room can be removed according to the amount of solar radiation when cooling or heating the room. It can be introduced into the buffer space from the shaft part, and then supplied to the chamber or exhausted. Therefore, it is possible to effectively utilize the heat stored in the buffer space without providing an opening on the outside of the double skin as in the conventional case, or to ventilate the room while using this buffer space as a heat shield space. can. Therefore, it is not necessary to impart wind pressure resistance equivalent to that of the outer glass to the inner glass. Further, it is not necessary to provide a complicated switching mechanism as in the conventional case in the upper and lower parts of the buffer space.

The shaft portion may be partitioned from the buffer space by a partition, and the opening portion may be formed below the partition. This partition can also be used as one side surface of the shaft portion.

The partition may be made of glass or acrylic. This makes it possible to improve the view from the room and the design from the outside.

The inner glass may be configured to be openable and closable.

A waist wall facing the buffer space may be provided on the lower side of the inner glass so that the waist wall can be opened and closed.

A solar cell may be housed in the buffer space.

According to another aspect, the present invention is a room air-conditioning system having the above-mentioned double-skin structure on one surface of a room, and the room is characterized in that an air-conditioned air blowing portion is provided. There is.

In such an air conditioning system, a total heat exchanger capable of exchanging heat between the exhaust gas flowing through the exhaust system flow path and the outside air flowing through the outside air introduction system flow path may be provided.

From yet another aspect, the present invention is the method of operating the air conditioning system described above, and whether or not outside air is introduced into the room via the buffer space during cooling or heating of the room. Is determined based on the temperature in the buffer space, the amount of solar radiation in the direction in which the double-skin structure is applied, or the output of the solar cell provided in the buffer space.

Further, when the room is cooled or heated, whether or not the indoor air in the room is circulated between the buffer space and the room is determined by the temperature in the buffer space and the double-skin structure. It may be determined based on the amount of solar radiation in the direction or the output of the solar cell provided in the buffer space.

According to the present invention, it is not necessary to impart wind pressure resistance equivalent to that of the outer glass to the inner glass as in the conventional case, and it is not necessary to provide a complicated switching mechanism in the upper and lower parts of the buffer space as in the conventional case. You can enjoy the effect.

It is a perspective view which shows the structure of the double skin which concerns on embodiment. It is explanatory drawing which schematically showed the system at the time of the room ventilation operation at the time of cooling in the air-conditioning system which concerns on embodiment. It is explanatory drawing which schematically showed the system at the time of the buffer space ventilation operation at the time of cooling in the air-conditioning system which concerns on embodiment. It is explanatory drawing which schematically showed the system at the time of the room ventilation operation at the time of heating in the air-conditioning system which concerns on embodiment. It is explanatory drawing which schematically showed the system at the time of the outside air heating operation at the time of heating in the air conditioning system which concerns on embodiment. It is explanatory drawing which schematically showed the system at the time of the room heating operation at the time of heating in the air-conditioning system which concerns on embodiment. It is explanatory drawing which schematically showed the system at the time of the room ventilation operation at the time of cooling in the air-conditioning system which concerns on another embodiment which has a total heat exchanger. It is explanatory drawing which schematically showed the system at the time of the buffer space ventilation operation at the time of cooling in the air-conditioning system which concerns on another embodiment which has a total heat exchanger. It is explanatory drawing which schematically showed the system at the time of the room ventilation operation at the time of heating in the air-conditioning system which concerns on another embodiment which has a total heat exchanger. It is explanatory drawing which schematically showed the system at the time of the buffer space ventilation operation at the time of heating in the air-conditioning system which concerns on another embodiment which has a total heat exchanger. It is explanatory drawing which schematically showed the system at the time of the room heating operation at the time of heating in the air-conditioning system which concerns on another embodiment which has a total heat exchanger. It is a perspective view which shows the other example of a double skin. It is a perspective view which shows the example of the double skin in which the solar cell is housed in the buffer space.

Hereinafter, the present embodiment will be described. FIG. 1 shows an outline of the configuration of an air conditioning system 2 having the structure of the double skin 1 according to the embodiment and air-conditioning the room R. The double skin 1 has a buffer space S formed between the inner glass 11 on the indoor side, the outer glass 12 on the outdoor side, and the inner glass 11 and the outer glass 12.

A shaft portion 22 is provided on the side of the buffer space S by a partition 21 made of glass. An opening 23 for communicating the buffer space S and the inside of the shaft portion 22 is formed below the partition 21. A suction portion 13 arranged in the ceiling space C is provided above the buffer space S. The suction portion 13 has a suction port that opens toward the buffer space.

As shown in FIG. 2, for example, a duct D1 that forms an air flow path is connected to the suction portion 13. The duct D1 branches into the duct D2 and the duct D3, and the duct D2 leads to the outlet side of the outside air fan 31 for introducing the outside air OA. Motor dampers M1 and M2 are provided in the duct D2.

Further, the duct D4 is connected to the duct D2 at a position in front of the outside air fan 31, that is, between the motor damper M1 and the motor damper M2, which leads to the outlet 32 communicating in the chamber R. Further, a duct D5 is connected to the shaft portion 22, and the duct D5 is connected to the outlet side of the outside air fan 31. The duct D5 is provided with a motor damper M3.

A duct D6 communicating with the outside air introduction port 33 is connected to the inlet side of the outside air fan 31. The duct D6 is provided with a motor damper M4. One end of the duct D7 is connected between the outside air fan 31 and the motor damper M4 in the duct D6, and the other end of the duct D7 is connected to the duct D8 leading to the suction port 34 communicating with the chamber R described later. It is connected. The duct D7 is provided with a motor damper M5.

The duct D3 described above merges with the duct D8 connected to the suction port 34 communicating in the chamber R, and is connected to the duct D9 connected to the inlet side of the exhaust fan 35. The duct D3 is provided with a motor damper M6. Further, the duct D8 is provided with a motor damper M7. The exhaust fan 35 exhausts the exhaust EA from the exhaust port 36 through the duct D10. The duct D10 is provided with a motor damper M8.

One end of the duct D11 is connected between the exhaust fan 35 and the motor damper M8 in the duct D10, and the other end of the duct D11 is connected to the duct D4. The duct D11 is provided with a motor damper M9.

As shown in FIG. 2, an air-conditioning blowing unit 37 for blowing out air-conditioned air from an air conditioner (not shown) is provided in the room R.

The air conditioning system 2 according to the embodiment has the above configuration, and an operation example thereof will be described next. Hereinafter, the portion of each duct D1 to D11 filled with a thick line indicates a state in which air is flowing.

[Indoor ventilation operation during cooling]
First, the state shown in FIG. 2 shows a normal indoor ventilation operation during cooling. During this operation, the motor dampers M2, M4, M7, and M8 are open, and the other motor dampers M are closed. By operating the outside air fan 31 and the exhaust fan 35 in this state, the room R is ventilated while supplying the air-conditioned air for cooling from the air-conditioning outlet 37 into the room R.
That is, the outside air OA introduced from the duct D6 is supplied into the chamber R from the outlet 32 through the duct D4, and the air from the chamber R is exhausted from the exhaust port 36 through the ducts D8, D9, and D10.

[Cushioning space ventilation operation during cooling]
When a certain amount of sunlight is incident on the double skin 1, the air conditioning system 2 can perform a function other than the above-mentioned normal indoor ventilation. That is, during the buffer space ventilation operation during cooling, the motor dampers M3, M4, M6, and M8 are open, and the other motor dampers M are closed, as shown in FIG. By operating the outside air fan 31 and the exhaust fan 35 in this state, the outside air OA introduced from the duct D6 by the outside air fan 31 passes through the duct D5 and passes through the duct D5 from the opening 23 of the shaft portion 22 to the buffer space S of the double skin 1. It is introduced into the inside and is exhausted from the suction port 13 at the upper part of the double skin 1 through the ducts D1, D9 and D10 and from the exhaust port 36.

Therefore, when there is a lot of sunlight on the double skin 1 during cooling, the inside of the buffer space S can be ventilated to lower the temperature, and the once-through load on the double skin surface can be reduced.

The switching from the indoor ventilation operation to the buffer space ventilation operation is carried out when the buffer space S exceeds a constant temperature, for example, 40 ° C., and then when the constant temperature, for example, 35 ° C. or lower, the indoor ventilation described above is performed. You may switch to driving.

In such a case, when the ventilation fan for indoor ventilation (outside air fan 31, exhaust fan 35) is also used for the buffer space ventilation, the air volume of the ventilation fan is the normal ventilation volume plus the ventilation volume of the buffer space S. .. For example, when the maximum ventilation volume of the buffer space S is 15% of the normal ventilation volume, the ventilation fan air volume is 115% of the normal ventilation volume. The ventilation fan will ventilate the room ventilation operation for at least 87% of the operating time and ventilate the buffer space for up to 13%. If the temperature of the buffer space S does not rise, the indoor ventilation volume becomes excessive, so it is desirable to adjust the start / stop of the ventilation fan and the air volume mode based on the indoor CO ₂ concentration and the like. Here, the air volume mode is a mode in which the number of poles of the fan motor of the ventilation fan is changed stepwise, and for example, the rotation speed is controlled in two steps of strong / weak and three steps of strong / medium / weak. Then, each stage is referred to as, for example, "driving in a weak mode". It has the advantage that it can be provided at a lower cost than the inverter control that continuously changes the rotation speed of the fan motor.

[Indoor ventilation operation during heating]
The state shown in FIG. 4 shows the normal indoor ventilation operation during heating, and the motor dampers M2, M4, M7, and M8 are open, and the other motor dampers are the same as the indoor ventilation operation during cooling described above. M is closed. By operating the outside air fan 31 and the exhaust fan 35 in this state, the room R can be ventilated while supplying the air-conditioned air for heating from the air-conditioning outlet 37 into the room R.

[Outside air heating operation during heating]
When it is desired to perform indoor ventilation during heating, it is possible to take in the outside air OA via the buffer space S and reduce the outside air load as shown in FIG.

That is, the motor dampers M1, M2, M4, M7, and M8 are open, and the other motor dampers M are closed. By operating the outside air fan 31 and the exhaust fan 35 in this state, it is possible to reduce the load on the outside air and ventilate the room R while supplying the conditioned air for heating from the air conditioning outlet 37 into the room R. can.

That is, the outside air OA introduced from the duct D6 by the outside air fan 31 is introduced into the buffer space S of the double skin 1 from the opening 23 of the shaft portion 22 through the duct D5, and the temperature is raised in the buffer space S by solar radiation or the like. Air is supplied into the chamber R from the suction portion 13 at the upper part of the double skin 1 through the ducts D2 and D4 and from the outlet 32. Then, the air in the chamber R is exhausted from the exhaust port 36 through the ducts D8, D9, and D10.

In such an outside air heating operation, when the buffer space S becomes higher than the outside air OA by a constant temperature, for example, 10 ° C. or more when indoor ventilation is required, the outside air OA is moved into the room R via the shaft portion 22 and the buffer space S. When the temperature falls below a certain temperature, for example, 5 ° C., the outside air heating operation is switched to the normal indoor ventilation operation during heating shown in FIG. Unlike the cooling operation, the outside air OA taken in through the buffer space S is used for normal ventilation without being exhausted, so that the outside air load can be reduced by the amount of temperature rise of the outside air OA in the buffer space S.

If the design is made by adding the ventilation volume of the buffer space S during cooling to the air volume of the ventilation fan (outside air fan 31, exhaust fan 35), or if the number of people in the room is less than the design staff, the ventilation fan is always operated. do not have to.

[Indoor heating operation during heating]
Further, when the buffer space S becomes a constant temperature higher than the outside air temperature, for example, 10 ° C. or more when indoor ventilation is not required, the operation is switched to the indoor heating operation. That is, as shown in FIG. 6, the motor dampers M3, M5, M6, and M9 are opened, and the other motor dampers M are closed. By operating the outside air fan 31 and the exhaust fan 35 in this state, the air in the chamber R passes through the duct D7 and the duct D5 from the suction port 34, and enters the buffer space S of the double skin 1 from the opening 23 of the shaft portion 22. Will be introduced to. Then, the air raised in the buffer space S by solar radiation or the like is supplied from the suction portion 13 at the upper part of the double skin 1 through the ducts D1, D9, D11, and D4 to the chamber R from the outlet 32. Further, air-conditioned air for heating is supplied into the room R from the air-conditioned air outlet unit 37.

That is, in the indoor heating operation during heating, the indoor air is returned to the room via the shaft portion 22 and the buffer space S. During such an indoor heating operation, the double skin 1 can be used as an auxiliary heat source for heating. Then, when the temperature of the buffer space S falls below a constant temperature, for example, 5 ° C., the ventilation fan (outside air fan 31, exhaust fan 35) may be stopped.

Next, the air conditioning system according to another embodiment will be described. FIG. 7 shows the system of the air conditioning system 3 in which the total heat exchanger 41 is provided in the ventilation system. The total heat exchanger 41 has an outside air fan 42 for introducing outside air and an exhaust fan 43 for exhaust gas. The total heat exchanger 41 having such a configuration is provided across the ducts D5 and D9 at the positions where the ventilation fans are located, instead of the outside air fan 31 and the exhaust fan 35 in the air conditioning system 2 described above. That is, the total heat exchanger 41 is provided so that heat can be exchanged between the outside air introduction system flow path and the ventilation system flow path from the chamber R and the exhaust system flow path and the air supply system flow path to the chamber R. Has been done. In addition, this total heat exchanger 41 has two operation modes: "heat exchange ventilation operation" in which heat is exchanged between the outside air OA and the room air to supply and exhaust, and "normal ventilation operation" in which heat is supplied and exhausted as it is without heat exchange. Is configured to be feasible. According to the air conditioning system 3 having such a configuration, the following operations are possible.

[Indoor ventilation operation during cooling]
FIG. 7 shows a state of indoor ventilation operation during cooling. During indoor ventilation operation, the motor dampers M2, M4, M7, and M8 are opened, and the other motor dampers M are closed. Then, the total heat exchanger 41 is set to the mode of heat exchange ventilation operation. As a result, the introduced outside air OA is heat-exchanged with the exhaust gas from the chamber R by the total heat exchanger 41 to lower the temperature, and then is supplied from the duct D4 into the chamber R through the outlet 32. Further, air-conditioned air for cooling is supplied into the room R from the air-conditioned air outlet unit 37. Therefore, the cooling load is reduced and the room R is ventilated.

[Cushioning space ventilation operation during cooling]
FIG. 8 shows a state in which the ventilation operation of the buffer space S during cooling is performed, and in this buffer space ventilation operation during cooling, and the total heat exchanger 41 is in the mode of normal ventilation operation without heat exchange. Set. Further, the motor dampers M3, M4, M6 and M8 are opened, and the other motor dampers M are closed.

By such an operation, the outside air OA introduced from the duct D6 is introduced into the buffer space S of the double skin 1 from the opening 23 of the shaft portion 22 through the duct D5, and the suction portion 13 on the upper part of the double skin 1 is introduced. Is exhausted from the exhaust port 36 through ducts D1, D9, and D10. Therefore, when there is a lot of sunlight on the double skin 1 during cooling, the inside of the buffer space S can be ventilated to lower the temperature, and the once-through load on the double skin surface can be reduced.

[Indoor ventilation operation during heating]
Next, the heating time will be described. FIG. 9 shows a case where the total heat exchanger 41 is set to the mode of heat exchange operation to perform indoor ventilation during heating. In this case, the motor dampers M2, M4, M7 and M8 are open. And the other motor damper M is closed. Then, the conditioned air for heating from the conditioned air blowing unit 37 is supplied into the room R.

By the above operation, the introduced outside air OA is heat-exchanged with the exhaust gas from the chamber R by the total heat exchanger 41 to raise the temperature, and then is supplied from the duct D4 into the chamber R through the outlet 32. Therefore, the heating load is reduced and the room R is ventilated.

[Outside air heating operation during heating]
FIG. 10 shows a state of outside air heating operation during heating. During this outside air heating operation, the total heat exchanger 41 is set to the mode of normal ventilation operation without heat exchange. Further, the motor dampers M1, M2, M4, M7 and M8 are open, and the other motor dampers M are closed. When the total heat exchanger 41 is operated in this state, the outside air OA introduced from the duct D6 is introduced into the buffer space S of the double skin 1 from the opening 23 of the shaft portion 22 through the duct D5. Then, the air raised in the buffer space S by solar radiation or the like is supplied from the suction portion 13 on the upper part of the double skin 1 through the ducts D2 and D4 to the chamber R from the outlet 32. Then, the air in the chamber R is exhausted from the exhaust port 36 through the ducts D8, D9, and D10.

According to the outside air heating operation during heating, the outside air is supplied from the air conditioning outlet 37 to the room R, and the introduced outside air OA is heated via the buffer space S to raise the temperature of the outside air. The load can be reduced and the room R can be ventilated.

[Indoor heating operation during heating]
FIG. 11 shows a state of indoor heating operation during heating. During this indoor heating operation, the total heat exchanger 41 is set to the mode of normal ventilation operation without heat exchange. Then, the motor dampers M3, M5, M6 and M9 are opened, and the other motor dampers M are closed. By operating the total heat exchanger 41 in this state, the air in the chamber R is introduced into the buffer space S of the double skin 1 from the opening 23 of the shaft portion 22 through the duct D7 and the duct D5 from the suction port 34. Will be done. Then, the air raised in the buffer space S by solar radiation or the like is supplied from the suction portion 13 at the upper part of the double skin 1 through the ducts D1, D9, D11, and D4 to the chamber R from the outlet 32. Further, air-conditioned air for heating is supplied into the room R from the air-conditioned air outlet unit 37.

Such indoor heating operation during heating is useful when ventilation is not required, and it is possible to reduce the heating load by raising the temperature of the return air from the room R via the buffer space S. be.

The temperature of the outside air OA taken in by the heat exchange ventilation operation shown in FIG. 9 is closer to room temperature than in the case of the normal ventilation operation. In order to further reduce the outside air load under these conditions, the temperature difference between the buffer space S and the outside air OA during the outside air heating operation shown in FIG. 10 was composed of the outside air fan 31 and the exhaust fan 35 in the air conditioning system 2 above. Set a larger value than the case, for example, ON at 30 ° C and OFF at 25 ° C. More specifically, for example, when the outside air temperature is 10 ° C. and the room temperature is 22 ° C., if the outside air OA is introduced into the chamber R as it is, it is 10 ° C., and if it is introduced via a total heat exchanger with an efficiency of 50%, the outside air OA is introduced. The temperature will be 16 ° C. In order to obtain the heating effect of the double skin, the temperature of the buffer space S needs to be at least about 10 + 10 = 20 ° C. in the former case, that is, when the outside air OA is introduced into the chamber R as it is. On the other hand, in the latter case, that is, when the outside air OA is introduced via the total heat exchanger 41, a minimum of about 16 + 10 = 26 ° C. is required. Therefore, if the temperature difference between the buffer space S and the outside air OA is, for example, 30 ° C, the total heat exchanger 41 is operated, and if the temperature difference is 25 ° C, the total heat exchanger 41 is not operated (heat exchange is performed). The outside air load can be reduced by carrying out the operation of (not).

Further, as in the case of configuring the outside air fan 31 and the exhaust fan 35 in the air conditioning system 2, the normal ventilation volume is controlled by the indoor CO ₂ concentration and the like so as not to be affected by the temperature of the buffer space S. Is desirable.

As described above, according to the air conditioning system 3 having the total heat exchanger 41, it is possible to further reduce the cooling load and the heating load as compared with the air conditioning system 2.

Further, in the example described above, since there is no opening leading to the buffer space S on the outside of the double skin 1, it is not necessary to impart the same wind pressure resistance to the inner glass 11 as the outer glass 12. Further, the effect of the double skin can be enjoyed without providing a complicated switching mechanism as in the conventional case in the upper and lower parts of the buffer space S.

In the above-described embodiment, the shaft portion 22 is partitioned from the buffer space S by a partition 21 made of glass, but of course the partition 21 is not made of glass and an appropriate board or panel may be used. Further, by not forming the opening 23 below the partition 21 and eliminating the lower part of the partition 21, it is possible to exert the same function as the opening 23.

Further, the example shown in FIG. 12 is an example in which the waist wall 51 is provided under the inner glass 11. By forming the lower part of the inner glass 11 which does not contribute much to the view as the waist wall 51 in this way, the heat insulating property of the outer skin can be improved. Further, by reducing the height of the inner glass 11, it becomes easy to adopt an opening / closing mechanism such as a sliding window. In the example of FIG. 12, the inner glass 11 is configured as a sliding window by the slide glasses 11a and 11b.

Further, by making the inner glass 11 openable and closable in this way, it becomes easy for people to enter and exit the buffer space S and access it, so that the glass can be easily cleaned. Further, when the blind is provided in the buffer space S, it is possible to adopt an inexpensive manual opening / closing type blind. This effect can be easily realized because it is not necessary to impart the same wind pressure resistance as the outer glass to the inner glass 11 as described above.

In FIG. 13, the lower part of the inner glass 11 is the waist wall 51, the waist wall 51 itself can be opened and closed by the panels 51a, 51b, etc., and the solar cell 52 is installed in the lower part of the buffer space S. An example of is shown.

Since solar cells are generally installed outdoors, the surface of the element is protected by glass, and the cost accounts for half of the solar cell price. In the example shown in FIG. 13, since the installation location of the solar cell 52 is the buffer space S which is not exposed to rain or wind, the low-cost solar cell can be installed with the element exposed. Further, if the outdoor surface of the waist wall 51 (the surface on the outer glass 12 side) is made of a material having high reflectance, or if it is painted white, for example, a solar cell capable of double-sided power generation can be adopted as the solar cell 52. It is also possible to improve the power generation efficiency of solar cells.

The output from the solar cell 52 can of course be used for various purposes, but it may be used as an index at the time of switching the operation off. That is, whether or not the outside air OA is introduced into the room R via the buffer space S during cooling or heating, and whether or not the indoor air of the room R is circulated between the buffer space S and the room R. It may be determined based on the output of the solar cell 52.

In such a case, the amount of solar radiation in the direction in which the double-skin structure is constructed may be used as an index when switching the operation off. The amount of solar radiation may be measured by a pyranometer installed on the roof of a building or the like, and of course, the measured value of the pyranometer installed in the buffer space S may be used.

INDUSTRIAL APPLICABILITY The present invention is useful when a double skin is adopted in a building, and it is easy to apply it to a specific floor regardless of whether it is large or small.

1 Double skin 2, 3 Air conditioning system 11 Inner glass 11a, 11b Slide glass 12 Outer glass 21 Partition 22 Shaft 23 Opening 31 Outside air fan 32 Blowout 33 Outside air inlet 34 Suction port 35 Exhaust fan 36 Exhaust port 37 Air conditioning blowout 41 Extreme heat exchanger 42 Outside air fan 43 Exhaust fan 51 Waist wall 51a, 51b Panel 52 Solar cell C Ceiling space D1 to D12 Duct M1 to M9 Motor damper R Room S Buffer space

Claims (10)

It is a double-skin structure having a buffer space between the inner glass on the indoor side, the outer glass on the outdoor side, and the inner glass and the outer glass.
A shaft portion having a flow path in the vertical direction is formed on the side of the buffer space.
An opening through which air can flow is formed below the shaft portion with the buffer space.
The shaft portion can be switched to communicate with the return air system flow path or the outside air introduction system flow path of the chamber in which the double skin is installed.
The upper portion of the buffer space has a double-skin structure, characterized in that communication with the air supply system flow path or the exhaust system flow path of the room in which the double skin is installed can be switched. The double-skin structure according to claim 1, wherein the shaft portion is partitioned from a buffer space by a partition, and the opening portion is formed below the partition. The double-skin structure according to claim 2, wherein the partition is made of glass or acrylic. The double-skin structure according to any one of claims 1 to 3, wherein the inner glass is openable and closable. The double skin according to any one of claims 1 to 4, wherein a waist wall facing the buffer space is provided on the lower side of the inner glass, and the waist wall can be opened and closed. Construction. The double-skin structure according to any one of claims 1 to 5, wherein a solar cell is housed in the buffer space. A room air-conditioning system having the double-skin structure according to any one of claims 1 to 6 on one surface of the room.
An air-conditioning system characterized in that the room is provided with an air-conditioning air blowing portion. The air conditioning system according to claim 7, further comprising a total heat exchanger capable of exchanging heat between the exhaust gas flowing through the exhaust system flow path and the outside air flowing through the outside air introduction system flow path. The method for operating an air conditioning system according to any one of claims 7 or 8.
Whether or not outside air is introduced into the room via the buffer space during cooling or heating of the room is determined by the temperature in the buffer space, the amount of solar radiation in the direction in which the double-skin structure is constructed, or. A method of operating an air conditioning system, characterized in that it is determined based on the output of a solar cell provided in a buffer space. The method for operating an air conditioning system according to any one of claims 7 or 8.
Whether or not to circulate the indoor air of the room between the buffer space and the room during cooling or heating of the room is determined by the temperature in the buffer space and the direction in which the double skin structure is constructed. A method of operating an air conditioning system, characterized in that it is determined based on the amount of solar radiation or the output of a solar cell provided in a buffer space.

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