WO2016047968A1

WO2016047968A1 - Energy-saving ventilation system

Info

Publication number: WO2016047968A1
Application number: PCT/KR2015/009797
Authority: WO
Inventors: 이주열; 김해기; 박병현; 임윤희; 최진식; 신재란; 강태성
Original assignee: 주식회사 애니텍
Priority date: 2014-09-25
Filing date: 2015-09-18
Publication date: 2016-03-31
Also published as: KR20160036256A; KR101661123B1

Abstract

An energy-saving ventilation system is disclosed. The present energy-saving ventilation system comprises: a body part comprising a vent through which external air or internal air moves; a carbon dioxide removing device for removing carbon dioxide in room air such that the concentration of carbon dioxide in the room air is maintained at a preset carbon dioxide indoor environmental standard level or less; a plurality of pipes positioned at the rear of the body part and allowing a preset amount of external air to flow into a room or allowing the preset amount of air in the air passing through the carbon dioxide removing device to be discharged to the outside; an electric heat exchanger allowing the remaining air, excluding the amount of air corresponding to the preset amount of air in the air passing through the carbon dioxide removing device, to flow into the room again, and performing ventilation while exchanging the heat of the preset amount of air in the air passing through the carbon dioxide removing device with the heat of the preset amount of the external air flowing into the room through the plurality of pipes; and a controller for controlling the number of ventilations of the room air and the amount of external air introduced therein, by measuring the concentration of oxygen and carbon dioxide, which are in the room air, temperature, humidity and an amount of electricity consumed. Accordingly, the number of ventilations using the external air is reduced, by detecting the concentration of carbon dioxide in an indoor space and removing the carbon dioxide in the room air when the concentration of carbon dioxide exceeds a preset concentration of carbon dioxide, an energy loss is reduced by reducing the amount of external air introduced therein, and an amount of energy used can be reduced by performing heat exchange between the internal air discharged to the outside and the external air flowing into the room.

Description

Energy Saving Ventilation System

The present invention relates to an energy-saving ventilation system that can reduce the number of ventilation by reducing the carbon dioxide concentration in the indoor air.

Buildings such as multi-use facilities, apartment houses, skyscrapers, etc., which are used for business, living and residential use, are equipped with ventilation systems to create a pleasant indoor environment.

In particular, in the case of carbon dioxide, when the concentration of carbon dioxide in the atmosphere is increased, appropriate indoor ventilation is necessary because it causes symptoms such as headache, blood pressure rise, vomiting, etc. to those who reside or flow in the building.

In the case of such a ventilation system, a method of reducing the concentration of carbon dioxide is mainly used by introducing external air from outside to mix with indoor air in the atmosphere to reduce the concentration of carbon dioxide in a building.

However, the ventilation system for introducing outside air uses a member such as a fan or a motor to suck the outside air, and in order to operate such a member, electric energy is required and inevitably costs.

In particular, the room temperature is changed when the outside air is introduced, and thus, there is a problem that additional energy is required because the air-conditioning system must be additionally operated in order to maintain the indoor temperature at an appropriate temperature.

The present invention has been made to solve the above problems, an object of the present invention is to detect the carbon dioxide concentration in the indoor space, if the carbon dioxide concentration exceeds the predetermined carbon dioxide concentration by removing the carbon dioxide in the indoor air ventilation using the outside air In addition to reducing the number of times, by reducing the amount of air introduced to reduce the energy loss and heat exchange between the bet discharged to the outside and the outdoor air introduced into the room to provide an energy-saving ventilation system that can reduce the energy consumption.

Energy-saving ventilation system according to an embodiment of the present invention for achieving the above object, the body portion including a vent for moving the outside air or bet; A carbon dioxide removal device for removing carbon dioxide contained in the indoor air in order to maintain the carbon dioxide concentration in the indoor air below a preset carbon dioxide indoor environmental standard value; A plurality of pipes positioned at a rear side of the body part to allow a predetermined amount of external air to flow into the room or allow the predetermined amount of air to be discharged to the outside through the carbon dioxide removal device; The remaining air except for the amount corresponding to the predetermined amount of the air passing through the carbon dioxide removal unit is re-introduced into the room, and the heat of the predetermined amount of air in the air passing through the carbon dioxide removal unit and the plurality of pipes. An electrothermal heat exchanger configured to allow ventilation while exchanging heat of the predetermined amount of external air introduced into the room through the air; And a controller configured to control the number of ventilation of the indoor air and the amount of external air introduced by measuring oxygen concentration, carbon dioxide concentration, temperature, humidity, and power consumption amount included in the indoor air.

The predetermined amount of air may be less than 20% of the total air passing through the carbon dioxide removal device.

In addition, when the predetermined amount of external air flowing from the plurality of pipes and the remaining air excluding the predetermined amount of air from the air passing through the carbon dioxide removal device is reflowed into and introduced into the room, a high concentration of oxygen It may further include a PSA (Pressur Swing Adsorption) device for oxygen supply so that the high concentration of oxygen is introduced into the room together.

The plurality of pipes may include an outside air inlet port through which the predetermined amount of outside air is introduced into the room, and a bet discharge port through which the predetermined amount of air is discharged to the outside during the race via the carbon dioxide removal device. And, one of the outside air inlet and the bet outlet is located in the upper portion of the rear of the body portion and the other is located in the lower portion of the rear of the body portion, the upper portion of the rear of the body portion when receiving the first control signal from the controller When the pipe located in the air inlet is used and receives the second control signal from the controller, the pipe located in the lower portion of the rear of the body portion may be used as the internal air outlet.

As a result, the carbon dioxide concentration of the indoor space is sensed, and if the carbon dioxide concentration exceeds the preset carbon dioxide concentration, the carbon dioxide in the indoor air is removed to reduce the number of ventilation using outside air, and the amount of air is reduced to reduce the energy loss and discharge to the outside. Energy consumption can be reduced by making heat exchange between the bet and the bet and the outside air introduced into the room.

1 is a front perspective view provided to explain an energy-saving ventilation system according to an embodiment of the present invention;

Figure 2 is a side perspective view provided to explain the energy-saving ventilation system according to an embodiment of the present invention,

3 is a view provided to explain a controller according to an embodiment of the present invention;

Figure 4 is a graph for explaining the change in carbon dioxide concentration according to the use of the energy-saving ventilation system according to an embodiment of the present invention,

5 is a graph for explaining a change in carbon dioxide concentration according to the use of the energy-saving ventilation system according to an embodiment of the present invention, and

6 is a flowchart provided to explain a process of removing carbon dioxide according to an energy-saving ventilation system according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to the present invention.

1 is a front perspective view provided to explain an energy saving ventilation system according to an embodiment of the present invention, and FIG. 2 is a side view provided to explain an energy saving ventilation system according to an embodiment of the present invention. Perspective view.

The energy-saving ventilation system according to the present embodiment allows the indoor carbon dioxide concentration to be maintained below the indoor environmental standard value, while maintaining the indoor temperature while reducing the amount of outdoor air introduced when inhaling the outdoor air to reduce the carbon dioxide concentration. Used to reduce the energy usage used.

To this end, the energy-saving ventilation system according to the present embodiment includes a body part 100, a carbon dioxide removal device 200, a plurality of pipes 300, a heat exchanger 400, a controller 500, and a PSA for oxygen supply. Swing Adsorption) device 600 is provided.

The body part 100 is provided to allow the above-described carbon dioxide removal apparatus 200, the plurality of pipes 300, and the total heat exchanger 400 to be fixed and mounted to operate.

Ventilation port 110 is provided to allow the indoor air, that is, the internal air to be discharged to the outside or to allow the external air, that is, the external air to flow into the room, as shown in the upper portion of the front of the body portion 100 .

The position of the vent 110 is merely an example for convenience of description, and may be sufficiently changed in view of the position of the other devices.

On the other hand, the carbon dioxide removal device 200 is provided to maintain the concentration of carbon dioxide in the indoor air below a predetermined carbon dioxide indoor environmental reference value to remove the carbon dioxide contained in the indoor air.

In addition, the carbon dioxide removal apparatus 200 is provided inside the body part 100 so as not to be exposed to the outside.

In addition, the carbon dioxide removal apparatus 200 removes carbon dioxide contained in the indoor air introduced into the body part 100 through the ventilation port 110, and the carbon dioxide removed air can be moved to the heat exchanger (400).

In addition, in the present embodiment, the preset carbon dioxide concentration is assumed to be 1,000 ppm as the carbon dioxide concentration according to the indoor environment recommended standard value, which, of course, is an exemplary matter for convenience of description, and the recommended standard value is changed or preset according to the needs of the user. Of course, the concentration of carbon dioxide may be changed.

On the other hand, the plurality of pipes 300 are provided to allow the indoor air to be discharged to the outside or to allow the outside air to flow into the room, it is composed of an outside air inlet 310 and the internal air outlet 320 .

The outside air inlet 310 is provided to suck air from the outside to allow the outside air to flow into the room, and is located at the rear of the body part 100 as shown.

In addition, the outside air inlet 310 allows the outside air to be sucked to be moved to the total heat exchanger (400).

In addition, the outside air inlet 310 according to the present embodiment inhales only as much as a predetermined amount when inhaling the outside air from the outside, the predetermined amount in the present embodiment is the indoor air via the carbon dioxide removal device 200 It was assumed to be less than 20% of the total.

The above predetermined amount of fresh air is introduced to minimize energy loss when indoor air is maintained at an appropriate temperature. In the conventional ventilation system, 30% of indoor air is introduced into the air when fresh air is introduced. It was common.

However, in this case, some of the indoor air could be discharged to the outside and inflow of outside air to reduce the concentration of carbon dioxide in the indoor air. There was a disadvantage that the energy consumption is increased by operating the air conditioner / heater to maintain it.

In order to solve the above problems, in the present embodiment, the amount of air introduced into the room through the outside air inlet 310 is assumed to be less than 20% of the total amount of indoor air via the carbon dioxide removal device 200, and more preferably, the outside air. The amount of introduction is assumed to be 10% of the total amount of indoor air via the carbon dioxide removal unit 200.

On the other hand, the bet outlet 320 is provided to discharge a predetermined amount of indoor air of the indoor air via the carbon dioxide removal apparatus 200 in the indoor air to the outside.

To this end, the bet outlet 320 is positioned at the rear of the body part 100 together with the outside air inlet 310, and heats a predetermined amount of indoor air in the indoor air from which carbon dioxide is removed via the carbon dioxide removal device 200. It is supplied from the exchanger 400 and discharged to the outside.

Herein, the predetermined amount of indoor air refers to an amount equal to the amount of outside air sucked by the outside air intake port 310, and means an amount corresponding to less than 20% of the entire indoor air via the carbon dioxide removal device 200.

That is, the introduction amount of the outside air sucked by the outside air suction port 310 and the discharge amount of the inside air discharged by the inside air discharge port 320 are the same.

In addition, as described above, more preferably, the amount of the bet discharged by the bet outlet 320 is assumed to be 10% of the total indoor air via the carbon dioxide removal device 200.

1 and 2, the outside air inlet 310 and the inside outlet 320 are located at the rear of the body part 100, but the heights thereof are different from each other, which is when the ventilation system is used. Taking into account the difference in temperature, it is to efficiently use the temperature difference between the inside and outside air when the outside air is introduced or discharged.

To this end, when the first control signal is received from the controller 500 among the plurality of pipes 300, the pipe located above is used as the outside air inlet 310, and the pipe located below is used as the internal air outlet 320.

On the contrary, when receiving the second signal from the controller 500, the pipe located at the upper side is used as the bet discharge port 320 and the pipe located at the lower side is used as the outside air intake port 310 as opposed to the above.

Specifically, for example, when the ventilation system according to the present embodiment is used in winter, the temperature of the outside air is lower than the temperature of the inside air, but the air having a relatively low temperature among the two air has a property of going down.

Therefore, the outside air sucked through the outside air inlet 310 located at the upper portion of the rear of the body part 100 is located at a lower portion than the outside air intake port 310 even though a separate blower or fan is not provided. It can be easily moved to, the outside air absorbing the heat of the internal air through the heat exchanger 400 is moved to the top of the heat exchanger 400 can be introduced into the room.

Of course, this is an example for convenience of description, a separate blower or fan may be provided inside or outside the body part 100 for smooth movement of outside air and bet.

On the other hand, in the rear of the body portion 100, the outside air inlet 310 and the bet exhaust outlet 310 located below the heat exchanger 400, the predetermined air of the indoor air via the carbon dioxide removal device 200 After the heat exchange is performed in the total heat exchanger 400, the positive indoor air is moved to the lower part of the total heat exchanger 400 so as to be easily discharged to the outside.

Implementing so that the height of the outside air inlet 310 and the air outlet 320 are different from each other in this embodiment is also merely an example for convenience of description, the plurality of pipes 300 in consideration of the efficiency of heat exchange Position may be changed, as well as may be implemented to the same height.

On the other hand, the total heat exchanger 400 is provided to allow heat exchange between the outside air sucked through the outside air inlet 310 and the inside air discharged through the inside air discharge port 320.

The total heat exchanger 400 allows the remaining air to be re-introduced into the room except for the amount corresponding to a predetermined amount of the entire indoor air via the carbon dioxide removal unit 200.

In addition, the total heat exchanger 400 allows the outside air to be introduced into the room when the heat exchange between the outside and the inside is completed, and the predetermined amount of indoor air in the entire indoor air via the carbon dioxide removal unit 200 is a bet outlet ( Through 320) to the outside.

For this purpose, the total heat exchanger 400 is located inside the body part 100, and as shown in the drawing, the plurality of pipes 300 are positioned between two

pipes

310 and 320 when heights are different from each other. .

As described above, the predetermined amount means less than 20% of the indoor air passing through the carbon

dioxide removal device

200, and 20% of the indoor air passing through the carbon dioxide removal device 200 is electrothermally transmitted. Heat exchange is performed with the outside air sucked through the exchanger 400, and the remaining 80% of the indoor air via the carbon dioxide removal unit 200 is introduced into the room again through the total heat exchanger 400.

And in this embodiment, 90% of the indoor air via the carbon dioxide removal unit 200 is re-introduced into the room through the

heat exchanger

400, 10% is discharged to the outside through the bet outlet 320 for energy saving More preferably.

The controller 500 measures the oxygen concentration, carbon dioxide concentration, temperature, humidity, power consumption amount, and the like contained in the indoor air, and is provided to control the number of ventilation of the indoor air and the amount of introduced air.

The controller 500 includes a carbon dioxide removal apparatus 200, a plurality of pipes 300, and a total heat exchanger 400 when the concentration of carbon dioxide contained in the indoor air is greater than a predetermined value through the body unit 100 or a sensor provided outside. And controlling the oxygen supplying PSA device 600 to maintain the carbon dioxide concentration below a predetermined value.

As described above, the preset carbon dioxide concentration was assumed to be 1,000 ppm as the carbon dioxide concentration based on the recommended indoor environmental standard value.

In addition, the controller 500 allows the plurality of pipes 300 to be used as the outside air inlet 310 or the inside air outlet 320.

Specifically, when the pipe located in the upper portion of the plurality of pipes 300 is used as the outside air inlet 310, the controller 500 transmits the first control signal, on the contrary, the pipe located in the upper portion is the bet discharge outlet When used as 310, the controller 500 transmits a second control signal.

In this case, the first control signal or the second control signal may be directly received by the plurality of pipes 300 or by a fan connected to the plurality of pipes 300.

The controller 500 will be described in more detail with reference to FIG. 3 to be described later.

The PSA (Pressur Swing Adsorption) device 600 for supplying oxygen is provided to allow a high concentration of oxygen to flow into the room, and is connected to the body part 100 and the controller 500 as illustrated, or is a separate device. As a result, only the controller 500 can be connected.

In addition, the PSA device 600 for oxygen supply heats the remaining air except for the predetermined amount of air in the room air passing through the carbon dioxide removal device 200 and the predetermined amount of external air after heat exchange is completed in the heat exchanger 400. When the reflow and inflow into the room through the exchanger 400, a high concentration of oxygen is introduced into the room, and is controlled by the controller 500 for this purpose.

In addition, the PSA device 600 for oxygen supply is to reduce the concentration of carbon dioxide itself by removing the carbon dioxide in the indoor air ventilation system according to this embodiment to make the indoor environment comfortable, as well as to allow high concentration of oxygen to enter the room. By increasing the concentration of oxygen, it is possible to maintain an appropriate ratio of the concentration of oxygen and carbon dioxide in the indoor air.

Specifically, even if the ventilation system is a high concentration of oxygen generated in the oxygen supply PSA device 600 is introduced into the room, even if the indoor air and the outside air from which carbon dioxide is removed are not re-introduced and introduced into the room through the total heat exchanger 400. The effect of lowering the concentration of carbon dioxide in the indoor air can be seen.

As such, the PSA device 600 for supplying oxygen may be operated separately from the carbon dioxide removal device 200, the plurality of pipes 300, and the total heat exchanger 400, thereby reducing energy consumption and thus saving energy. do.

Hereinafter, the flow of the inside and the outside air will be described with reference to the flow of air.

For convenience of description, in the present embodiment, the outside air sucked from the outside is represented by a thick solid line, and the bet discharged from the inside to the outside is represented by a dashed-dotted line.

When the carbon dioxide concentration exceeds a predetermined value, the controller 500 is manually or automatically operated, and the air therein moves through the ventilation hole 110 to the inside of the body part 100.

For this purpose, a separate identification symbol is not described, but the ventilation system according to the present embodiment may be provided with a fan and a fan controller for movement of outside air or bet.

Although the bet moved into the body part 100 is not shown in FIG. 1, the carbon dioxide contained in the indoor air is removed through the carbon dioxide removal device 200 shown in FIG. 2, and the indoor air from which carbon dioxide is removed is a pre-heat exchanger. It is moved to 400.

Part of the bet removed carbon dioxide moved to the heat exchanger 400 is discharged to the outside through the bet outlet 320 after heat exchange with the outside in the heat exchanger (400).

And the remaining bet not discharged to the bet outlet 320 of the carbon dioxide moved to the total heat exchanger 400 is re-introduced into the room again.

On the other hand, the outside air is sucked into the body portion 100 through the outside air inlet 310 is moved to the total heat exchanger (400).

The outside air moved to the total heat exchanger 400 is introduced into the room after heat exchange is performed with some of the internal air from which the carbon dioxide is removed.

As described above, some of the insides of which carbon dioxide has been removed and the outside air sucked through the outside air intake port 310 have the same amount. it means.

On the other hand, Figure 3 is a view provided to explain the controller 500 according to an embodiment of the present invention.

As described above, the controller 500 measures the oxygen concentration, carbon dioxide concentration, temperature, humidity, power consumption amount, and the like included in the indoor air, and is provided to control the number of ventilation of the indoor air and the amount of introduced air.

For this purpose, although not shown in the drawing, the controller 500 measures carbon dioxide concentration and oxygen concentration in indoor air, room temperature and humidity, and power consumption in addition to the body 100 and the PSA device 600 for oxygen supply. Is connected to a separate sensor unit, and controls the number of times the indoor air ventilation and the amount of air introduced from the information collected from the connected sensor unit.

In addition, the controller 500 includes a display for checking a current indoor state or controlling connected devices as shown.

In addition, the controller 500 may display the current room temperature, oxygen concentration, carbon dioxide concentration power consumption amount, and the controller 500 may be automatically operated to set the ventilation system to operate according to a set control value or to operate manually. .

Specifically, as described above, when the concentration of carbon dioxide contained in the indoor air exceeds 1,000 ppm, the ventilation system is operated and the external air corresponding to 10% of the indoor air is discharged while the indoor air corresponding to 10% of the indoor air is discharged. For example, when the controller 500 is set to suck air, when the carbon dioxide concentration exceeds 1,000 ppm in the state in which the controller 500 is selected for automatic operation, the carbon dioxide removal apparatus 200 removes carbon dioxide and removes carbon dioxide. 10% of the indoor air of the air passing through the apparatus 200 is discharged to the bet outlet 320 after passing through the heat exchanger (400).

In addition, the controller 500 allows the outside air to be sucked by an amount corresponding to more than 10% from the outside air inlet 310, and then, when heat exchange with the internal air is completed in the heat exchanger 400, the carbon dioxide through the heat exchanger 400. Re-introduced and introduced into the room with 90% of the indoor air during the game via the removal device 200.

In addition, the controller 500 controls the operation of the total heat exchanger 400, so that the heat exchange between the discharged bet and the outside air sucked in is performed as necessary.

On the other hand, Figures 4 and 5 are graphs for explaining the change in carbon dioxide concentration according to the change in time according to the use of the energy-saving ventilation system according to an embodiment of the present invention, according to the following [Table 1] over time The concentration change of indoor carbon dioxide is shown.

	BlankBlank	대조군Control	에너지 절감형 환기시스템Energy Saving Ventilation System
실내온도Room temperature	28.1℃28.1 ℃	28.128.1	27.627.6
실내습도Room humidity	53%53%	5555	5555
이산화탄소 주입량CO2 injection volume	5L/min5L / min	5L/min5L / min	5L/min5L / min
시간당 외기도입횟수Number of fresh air per hour	--	0.7회0.7times	0.1회0.1times
에어컨 설정Air conditioner setting	자동운전, 23Automatic operation, 23
소비전력Power Consumption	9447.01 KWh9447.01 KWh	10420.89KWh10420.89KWh	9613.87KWh9613.87KWh
소비전력Power Consumption	100%100%	110.31%110.31%	101.77%101.77%

As shown, the energy-saving ventilation system according to the present embodiment including the total heat exchanger 400 may reduce the number of outside air inflows from which air is introduced from the outside, and the concentration of carbon dioxide does not exceed 1,000 ppm. It can be maintained.

In addition, the heat exchange between the outside and the inside through the heat exchanger 400 is made to reduce the power consumption used when the ventilation system is operated compared to the control.

In addition, as a result of performing the test on the amount of change of carbon dioxide in the above embodiment in order to confirm the reliability of carbon dioxide removal, as shown in FIG. 5, the energy-saving ventilation system according to the present embodiment has a concentration of indoor carbon dioxide even if time passes It was confirmed that is properly maintained at 1,000 ppm or less.

Meanwhile, FIG. 6 is a flowchart provided to explain a process of removing carbon dioxide according to an energy-saving ventilation system according to an embodiment of the present invention.

First, the controller 500 receives a concentration value of carbon dioxide in indoor air measured from a connected sensor, and determines whether the concentration of the received carbon dioxide exceeds a reference value (S100).

If the concentration of carbon dioxide received from the sensor is less than the reference value (S100-N), it returns to the beginning.

On the other hand, when the concentration of carbon dioxide received from the sensor exceeds the reference value (S100-Y), the controller 500 causes the carbon dioxide removal device 200 to operate (S200).

The carbon dioxide removal apparatus 200 allows the carbon dioxide contained in the indoor air introduced into the body part 100 to be removed (S300).

Thereafter, the heat exchanger 400 allows some of the indoor air from which carbon dioxide has been removed through the carbon dioxide removal device 200 to be re-introduced into the room (S400). Here, the indoor air re-introduced into the room refers to the remaining air except for less than 20% of the total air passing through the carbon dioxide removal apparatus 200 as described above.

In addition, the outside air suction port 310 sucks a predetermined amount of external air and flows into the body part 100 to be moved to the heat exchanger 400 (S500).

The total heat exchanger 400 allows heat exchange between the predetermined amount of external air and the predetermined amount of internal air in the carbon dioxide removed air (S600). In the present embodiment, the outside air and the inside air subjected to heat exchange are assumed to be the same amount.

When the heat exchange between the outside air and the internal air is completed in the heat exchanger 400, the internal air outlet 320 allows the internal air of a predetermined amount of the carbon dioxide removed air to be discharged to the outside (S700).

Through the above steps, the energy-saving ventilation system according to the present embodiment may not only reduce the concentration of carbon dioxide in the indoor air, but also reduce the amount of air introduced into the room and the number of ventilations to reduce the carbon dioxide concentration. By making the heat exchange between the inside and the inside, it is possible to reduce the amount of energy used in the air conditioner, which is operated to maintain the indoor air at a constant temperature when the outside air is introduced.

Although one embodiment of the present invention has been illustrated and described above, the present invention is not limited to the above-described specific embodiments, and the present invention is not limited to the specific scope of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims

A body part including a ventilation hole to which an outside air or a bet moves;

A carbon dioxide removal device for removing carbon dioxide contained in the indoor air in order to maintain the carbon dioxide concentration in the indoor air below a preset carbon dioxide indoor environmental standard value;

Located in the rear of the body portion, a plurality of pipes to allow a predetermined amount of external air to enter the room or to discharge the predetermined amount of indoor air of the air through the carbon dioxide removal device to the outside;

The remaining room air except for the amount corresponding to the predetermined amount of the air passing through the carbon dioxide removal unit is re-introduced into the room, and the heat and the plurality of the predetermined amount of room air of the air passing through the carbon dioxide removal unit An electrothermal heat exchanger configured to allow ventilation while exchanging heat of the predetermined amount of external air introduced into the room through a pipe of the air; And

Energy-saving ventilation system comprising a; controller for controlling the number of times of ventilation and the amount of outside air introduced by measuring the oxygen concentration, carbon dioxide concentration, temperature, humidity and power consumption contained in the indoor air.
The method of claim 1,

The predetermined amount of air is an energy-saving ventilation system, characterized in that less than 20% of the total of the air passing through the carbon dioxide removal device.
The method of claim 1,

High concentration of oxygen when the predetermined amount of external air flowing from the plurality of pipes and the remaining internal air except the predetermined internal air amount of the air passing through the carbon dioxide removal device is reflowed into and introduced into the room Energy saving type ventilation system further comprises a; PSA (Pressur Swing Adsorption) device for oxygen supply so that the high concentration of oxygen is introduced into the room together.
The method of claim 1,

The plurality of pipes,

An outdoor air inlet for introducing the predetermined amount of external air into the room, and a bet outlet for discharging the predetermined amount of internal air to the outside during a game via the carbon dioxide removal device,

One of the outside air inlet and the inside of the bet outlet is located at the top of the rear of the body portion and the other is located at the bottom of the rear of the body portion, when receiving the first control signal from the controller at the top of the rear of the body portion Energy saving type ventilation system, characterized in that the pipe located in the lower portion of the back of the body portion is used as the internal air outlet when the located pipe is used as the outside air intake port and receives the second control signal from the controller.