WO2018147554A1

WO2018147554A1 - Dehumidification system using membrane installed in building duct

Info

Publication number: WO2018147554A1
Application number: PCT/KR2017/015721
Authority: WO
Inventors: 박성룡; 이형근; 강은철; 장재철
Original assignee: 한국에너지기술연구원
Priority date: 2017-02-13
Filing date: 2017-12-29
Publication date: 2018-08-16

Abstract

The present invention relates to a dehumidification system using a membrane for dehumidification of a place where a dehydration space is required, in which a dehumidification unit comprising a membrane is installed in a duct pipe or a passage into which air is introduced, wherein the membrane is configured to collect ambient water vapor by being formed of a water vapor permeable film formed to have an atmospheric pressure lower than the ambient atmospheric pressure while a fluid flows therein such that waste of energy can be reduced through a control with easy replacement.

Description

Dehumidification system using membrane installed inside building duct

The present invention relates to a dehumidification system using a membrane installed inside a duct of a building, and more particularly, a membrane dehumidifier is installed in a duct pipe connected to an indoor space requiring dehumidification, and a fluid is circulated inside the membrane to perform dehumidification. It relates to a dehumidification system using a membrane.

If the humidity in the air is high, decay, corrosion, condensation water may occur, causing malfunctions in telecommunications and various electronic equipment, odors and bacteria, etc., which may damage the clothes stored or harm the human health.

In order to solve this problem, indoor air is usually ventilated or a dehumidifier is used, and a dehumidifier is installed to perform indoor dehumidification. However, the method of ventilating the indoor air is a method of recirculating some of the indoor air and mixing with the outdoor air to supply the indoor air, but there is a limit in lowering the humidity of the indoor air because the water vapor content of the recirculated air is high. In addition, the method using the dehumidifying agent is to absorb moisture in the air by using an absorbent such as silica gel that adsorbs water vapor, which has a limitation in that a relatively small amount of water vapor can be removed from an enclosed space. In addition, the dehumidification by the existing dehumidifying agent or the hydrophilic coating film is essentially accompanied by a phase change of the condensation process, there is a problem that occurs condensation heating problem occurs at this time. In addition, the dehumidification method using a compression type cooling device that is generally used, a large capacity dehumidification is possible by condensing and removing moisture in the room air by operating a refrigeration cycle, but there is a problem that consumes a large amount of power consumption, There is a problem of condensation heat

In addition, since the existing dehumidifier requires a large installation space, it is difficult to install it in a building that does not have enough installation space, such as an indoor bathroom or a dressing room, or in various places where a drying space is required, such as a chemical storage room, an ammunition warehouse, or a food drying facility. Has a limitation of space.

The present invention has been made in order to solve such a problem, to provide a dehumidification system that does not generate condensation heating and can provide high dehumidification performance and excellent energy efficiency.

In addition, the present invention does not require a separate space for the installation of the dehumidification, can be installed in the existing building duct pipe, and to provide a dehumidification system that is easy to maintain.

In addition, the present invention is to provide a flow path structure and system arrangement method that can increase the dehumidification efficiency of the dehumidification system using the membrane installed inside the building duct pipe.

In order to achieve the object as described above, the present invention comprises a membrane module formed by arranging the membrane formed in such a way that the fluid flows in a plurality of layers, dehumidifying the fluid supply or discharge to the membrane module through the main inlet and the main outlet To form a part, the dehumidifying unit is coupled between the divided duct pipe or implemented to easily install a dehumidification system by modifying only a part of the duct pipe inside the duct pipe.

Through such a technical solution, the dehumidification system using the membrane of the present invention can be installed in the duct pipe inside the building to dehumidify air containing steam generated in the indoor space.

In addition, in the dehumidification system using the membrane of the present invention, since the dehumidifier is installed inside the duct pipe, only a part of the duct pipe can be modified to install the dehumidification system easily.

In addition, the dehumidification system using the membrane of the present invention does not require a separate space for the installation of the dehumidification facility, it is easy to maintain and reuse it has a great effect of cost efficiency.

In addition, the dehumidification system using the membrane of the present invention has an advantage that the performance of the dehumidification system can be improved by easily adjusting the passage area of the duct pipe and the passage area of the dehumidifying unit.

In addition, the dehumidification system using the membrane of the present invention has excellent dehumidification performance, high energy efficiency because it does not use power or uses less power during dehumidification, and the user operates a plurality of membrane modules or pressure of fluid flowing on the membrane. By controlling the dehumidification performance can be controlled. This can be achieved through central control, and can be controlled to suit various situations such as high dehumidification or no operation, thereby providing convenience to the user.

In addition, the dehumidification system using the membrane of the present invention has an advantage that the fluid having a pressure lower than atmospheric pressure traps water vapor, so that the noise is low and no additional heat is generated. This can provide a comfortable environment for the user.

1 is a perspective view illustrating a form in which a dehumidifying unit of a dehumidifying system using a membrane of the present invention is installed in a duct pipe.

2 and 3 are a perspective view and a plan view showing a membrane module of the dehumidification system using the membrane of the present invention.

Figure 4 is a conceptual diagram for explaining the operation of the dehumidification system using the membrane of the present invention.

5 is a conceptual view illustrating a variable flow path structure of the dehumidification system using the membrane of the present invention.

6 is a conceptual diagram illustrating a modification of the dehumidification system using the membrane of the present invention.

7 is a perspective view for illustrating a dehumidification system using a membrane having several membrane modules.

8 is a perspective view for explaining the interior of the dehumidification system using a membrane having a plurality of membrane modules.

FIG. 9 is a conceptual view for explaining a modification of the dehumidification system using a membrane having a plurality of membrane modules.

10 is a conceptual view for explaining the installation form of the dehumidification system using the membrane of the present invention.

11 is a conceptual view illustrating a modified installation form of the dehumidification system using the present invention membrane.

12 is a conceptual view illustrating a form in which a dehumidification system using a membrane of the present invention is installed in a dressing room.

13 and 14 is a conceptual diagram for explaining another embodiment in which the dehumidification system using the membrane of the present invention is installed in the dressing room.

According to an embodiment of the present invention, the dehumidification system using the membrane of the present invention includes a membrane module 200 in which a membrane 100 formed to flow fluid therein is arranged in a plurality of layers; A main inlet 210 for supplying a fluid to the membrane 100 of the membrane module 200; And a dehumidification part 300 including a main discharge port 220 for discharging the fluid in the membrane 100 collecting the steam, wherein the dehumidification part 300 is coupled between the divided duct pipes or It is formed inside the duct pipe.

In addition, the membrane 100 has an inlet 110 through which fluid flows so that the fluid flows therein, an outlet 130 through which the fluid is discharged from the membrane 100, and the inlet 110 and an outlet 130. It may be configured to include a suction unit 120 to connect between, and to capture the external water vapor.

In addition, the membrane module 200 is formed by stacking the membrane 100 spaced apart by a predetermined interval up and down, the effective diameter of the membrane module 200 is 25 to 35% of the effective diameter of the dehumidifying unit 300 Can be set.

In addition, the suction part 120 is made of a material that can pass water vapor, the fluid introduced from the inlet 110 is formed lower than the external air pressure, the external water vapor may be introduced into the inside.

In addition, the membrane 100 may be a hollow fiber membrane made of a polymer support, and is formed by coating a hydrophilic material therein in a thickness of 100 nm to 200 nm to increase the selectivity of water vapor in the air.

In addition, the membrane 100 is formed to have a coating layer of carboxylated TiO ₂ nanoparticles in polyamide polymerized by reacting with 3,5-diaminobenzoic acid.

In addition, the membrane module 200 is an injection valve 31 for controlling the state of the fluid flowing into the main inlet 210 and the discharge valve 32 for controlling the state of the fluid discharged from the main outlet 230 It may be configured to include.

In addition, the dehumidifying part 300 may include a plurality of membrane modules 200 embedded therein, and the plurality of membrane modules 200 may be disposed along the front and rear directions of the dehumidifying part 300.

In addition, the duct pipe 10 includes a first duct 11 connected to the indoor and the second duct 12 connected to the outdoor, the dehumidifying unit 300 is coupled to the front surface of the first duct 11. The rear surface may be combined with the second duct 12.

In addition, the duct pipe 10 further includes a circulation duct 13, one end of which is connected to the second duct 12 and the other end of which is connected to the room, and the air dehumidified in the dehumidifying unit 300 is the circulation duct. It may be formed to re-introduce into the room through the (13).

In addition, the dehumidifying unit 300 may be provided in plurality, and may be additionally installed on the circulation duct 13.

Hereinafter, a dehumidification system using a membrane according to various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided by way of example so that the spirit of the invention to those skilled in the art can fully convey. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals denote like elements throughout the specification.

At this time, if there is no other definition in the technical terms and scientific terms used, it has a meaning that is commonly understood by those of ordinary skill in the art to which the present invention belongs, and the gist of the present invention is unnecessary in the following description and the accompanying drawings. Descriptions of well-known functions and configurations that may be blurred are omitted.

1 is a perspective view illustrating a form in which a dehumidifying unit of a dehumidifying system using a membrane of the present invention is installed in a duct pipe. Referring to FIG. 1, the dehumidification system of the present invention may include a dehumidifying part 300 included in the membrane module 200 to remove water vapor from the air. The dehumidifying unit 300 may be formed on a duct pipe through which indoor air is discharged to the outside, or on a passage through which air is introduced into the room. The dehumidifying unit 300 may include a coupling structure that may be coupled to the duct. In this case, the dehumidifier 300 may be coupled to and installed between the plurality of

ducts

11 and 12.

Membrane of the present invention is made of a tubular shape so that the fluid, preferably the sweep gas flows therein, the main inlet 210 and the membrane is discharged to the fluid inlet 210 and the membrane module 200 An outlet 230 is formed.

2 and 3 are a perspective view and a plan view showing a membrane module of the dehumidification system using the membrane of the present invention, the membrane module 200 of the present invention is a state in which one or more membranes 100 are spaced apart by a predetermined interval up and down And a main inlet 210 for introducing fluid into the one or more membranes 100 and a main outlet 230 for collecting the fluid discharged from the one or more membranes 100. . In addition, the membrane module 200 may be configured to collect water vapor in the air through the inlet 120 of the membrane 100.

The membrane 100 of the present invention may be a hollow fiber membrane made of a polymer support, and may be formed by coating a hydrophilic material therein in a thickness of 100 nm to 200 nm to increase the selectivity of water vapor in the air. More preferably, the membrane 100 of the present invention is formed to have a coating layer of carboxylated TiO ₂ nanoparticles in a polyamide polymerized by reaction with 3,5-diaminobenzoic acid.

In addition, the shape of the inner hollow portion of the membrane 100 may be formed in various shapes, including a round tube, a rounded corner triangle, a rounded corner square, a triangle and a square.

In addition, the membrane 100 may be formed of a very thin film having a thickness of about 0.5 mm to about 1.2 mm through which water vapor may be structurally transmitted, but is not limited thereto.

And the membrane 100 having the structure as described above, the leakage is minimized, and has an effect that the dispersion of the water vapor infiltrated into the membrane 100 evenly. In addition, the dehumidification performance of the small volume membrane 100 leads to the advantage that can be made with high efficiency.

2 and 3, the membrane module 200 of the present invention is built in a state in which one or more membranes 100 are stacked with a predetermined interval spaced up and down, the membrane 100 forming a layer is the main inlet It comprises an inlet 110 is supplied with the fluid introduced through the 210, the inlet 120 for absorbing the water vapor in the air and the outlet 130 for discharging the fluid inside the membrane 100 to the outside do. The plurality of membranes 100 flow through the respective inlets 110 through the inlet 210 and flow into the membrane 100 of each layer, and the plurality of membranes 100 The fluid is collected and discharged through the discharge part 130 to the main discharge port 230.

The suction part 120 of the membrane 100 will be further described. The suction part 120 may have an outer diameter formed of a fine membrane using chloroethylene, fluorocarbon polymers, and polyimide. At this time, water vapor has a large polarity and a solubility constant is larger than that of a molecule, and the permeation constant is also large, so that water vapor can be separated faster than other components of oxygen and nitrogen. The present invention can separate only the water vapor in the air by allowing the low pressure fluid to flow in the suction unit 120 based on the nature of the water vapor.

On the other hand, since the membrane module 200 blocks the air flow of the duct pipe 10, the dehumidification performance and power consumption will vary depending on the total effective area of the membrane module 200 installed in the duct pipe 10, the membrane When the effective area of the module 200 is large, the dehumidification performance is increased, but the power consumption is also increased, and when the effective area of the membrane module 200 is confirmed that the dehumidification performance is significantly reduced. In this regard, the effective diameter of the membrane module 200 to represent the area occupied by the membrane 100 in the duct pipe 10 is most preferably 25 to 35% of the effective diameter of the dehumidifying part 300. . Here, the effective diameter of the membrane module 200 means the diameter of a circle having the same cross-sectional area as the total cross-sectional area of the membrane 100.

Referring to the method of dehumidifying through a dehumidification system using a membrane installed in the duct pipe of the present invention, first, opening the injection valve 31 and the discharge valve 32 to inject gas into the membrane module 200; Steps. That is, in order to inject gas into the membrane module 200, the injection valve 31 and the discharge valve 32 are opened to inject gas. At this time, the gas injected through the injection valve 31 is preferably formed to be lower than the outside air pressure, it is efficient to have a pressure of about 0.7 to 0.9 compared to the external air pressure.

At this time, as the gas is injected into the injection valve 31, a second step of operating a blowing means such as a fan so that air flows on the duct pipe or passage. And it may include a third step of collecting the water vapor flowing in the duct pipe or the passage using the dehumidification unit 300.

Here, the gas may be injected into the membrane 100 in order to exert the water vapor removing function, but the membrane 100 may include any fluid that can flow without being limited to the gas. In addition, if the pressure of the gas injected through the injection valve 210 is lowered, the amount of dehumidification of the membrane 100 is increased, so that the gas pressure injected into the injection valve 31 is smaller than the preset pressure value. It is preferable.

In addition, the dehumidification amount of the membrane module 200 does not increase any more when the pressure of the gas and the pressure of the outside are the same. Therefore, the membrane module 200 may be controlled to maintain a constant pressure through the injection valve 31 and the discharge valve (32).

4 is a conceptual diagram for explaining the operation of the dehumidification system using the membrane of the present invention, the fluid absorbed water vapor discharged through the main outlet 230 is discharged due to the negative pressure formed through the vacuum pump 500 gas-liquid separator Passing the 400 to discharge the water vapor, the dried fluid is introduced into the membrane module 200 through the inlet 210 again.

On the other hand, the dehumidification system using the membrane of the present invention can improve the dehumidification performance through the flow path variable structure as shown in FIG. Referring to FIG. 5, when the effective diameter of the duct pipe is D1, the shear air shaft pipe part 610 may have a front end of the dehumidifying part 300 having the same effective diameter as the duct pipe having a diameter D2 smaller than the effective diameter of the duct pipe. Can be added. As such, when the diameter of the front end of the dehumidifying unit 300 is changed to a smaller value, a lower pressure is formed in the dehumidifying unit 300 than in the shear air shaft tube unit 610, and water vapor in the air is introduced through the suction unit 120 of the membrane 100. Better absorption. On the other hand, the rear air shaft tube 610 is added to the rear end of the dehumidifying unit 300 so that the duct pipe has another reduced effective diameter D3, and the front air shaft tube can maximize the suction performance of the membrane 100. The diameter D2 of the part 610 and the diameter D3 of the rear end air shaft pipe part 620 may be variably set.

As another modified example of varying the flow path, when there is room in the installation space of the dehumidifying unit 300, the effective diameter D4 of the dehumidifying unit 300 is larger than the effective diameter D1 of the duct pipe as shown in FIG. The passage can be configured to be enlarged by setting large.

If the effective diameter of the suction unit 120 of the dehumidifying unit 300 is larger than the effective diameter of the duct pipe, the same pressure difference between the vacuum pump and the duct can reduce the power consumption while maintaining the same dehumidifying performance. have. As a result of the specific experiment, when the pressure is increased to 0.2 bar, it is confirmed that the power consumption of about 20% is reduced.

FIG. 7 illustrates a dehumidification system using a membrane in which a plurality of membrane modules 200 are arranged in series in a duct pipe to form a dehumidifying part 300, and in consideration of an installation space and necessary dehumidification performance, a plurality of membrane modules ( 200) will be installed. Each membrane module 200 is provided with a main inlet 310 and a main outlet 320, respectively, it is possible to selectively operate each membrane module 200 as needed.

8 and 9 are views for explaining the interior of the dehumidification system using the membrane in which the plurality of membrane modules 200 are installed. As shown in FIG. 8, the suction part 120 of the membrane is disposed in parallel with the air flow direction. As shown in FIG. 9, the suction part 120 of the membrane may be disposed perpendicular to the air flow direction.

10 and 11 are conceptual views for explaining the installation form of the dehumidification system using the membrane of the present invention, referring to FIG. 10, the interior of the duct pipe (1) in communication with the interior space (1) basically of the present invention Dehumidifying unit 300 may be installed. The indoor space 1 is a place requiring dehumidification, and generally, a dressing room, a drug storage, an ammunition storage, a food drying facility, or the like may correspond. The indoor space 1 may be used in parallel with a general air conditioner, and may include all places requiring a comfortable environment such as a bedroom. In addition, the dehumidifying unit 300 of the present invention may be formed not only on the duct but also on the wall surface of the indoor space 1, and may control the humidity of the air inlet formed in the window and door.

In another embodiment, a plurality of dehumidifying parts 300 may be arranged. As shown in FIG. 11, one dehumidifying part 300 is disposed on the second duct 12, and the other dehumidifying part 300 is formed. It may be disposed on the circulation duct (13). In this case, the fan is preferably provided on the second duct 12 and the circulation duct 13 so as to enable more smooth circulation. Although not shown, the fluid introduced into the dehumidifying unit 300 has no water vapor or low humidity, but the fluid discharged from the dehumidifying unit 300 has high humidity because the water vapor is collected. In this way, a separate secondary loop may be formed to collect water vapor in the fluid phase, and water may be separated from the fluid phase through the secondary loop. The separated water may be discharged to the toilet or the outside.

When the dehumidifying unit 300 is coupled to the duct pipe 10 or installed inside, the duct pipe 10 at the point where the dehumidifying unit 300 is installed can be easily opened or disassembled to facilitate maintenance. I can lose it. In addition, a damper may be formed at an inlet of the circulation duct 13 to control a flow rate of dry air from which water vapor discharged from the dehumidifying unit 300 is removed. In addition, the damper may further include a damper control unit for controlling the opening degree of the damper according to the humidity of the indoor space (1).

12 to 14 is a conceptual diagram for explaining the form that the dehumidification system using the membrane of the present invention is installed in the dressing room. As shown in FIG. 12, when the indoor space 1 is a dressing room, an air vent installed at an upper portion of the dressing room is connected to a pipe duct, and the dehumidifying unit 300 is disposed between the first duct 11 and the second duct 12. ) Will be installed. The first duct 11 means a portion connected to the indoor space 1, the second duct 12 is provided to guide the air to the outdoor or other indoor, the second duct 12 A ventilator may be formed, and a separate vent means and the second duct 12 may be connected to each other.

On the other hand, the dehumidifying unit 300 of the present invention, as well as the duct pipe 10 for discharging the air of the indoor space 1 to the outside, the passage 20 is formed to be introduced into the indoor space 1 as shown in FIG. It can be installed on). This is when the ventilator is operated so that the air is discharged to the duct pipe 10, the air may be introduced into the indoor space (1) from another place. In this case, when the air flowing into the indoor space 1 has a high humidity, the indoor space 1 may also have a high humidity, so the present invention provides a passage 20 through which the air flowing into the indoor space 1 passes. ) Can be installed on the dehumidification.

In another modified example, as shown in FIG. 14, the duct pipe includes a first duct 11 and a second pipe 12, and a circulating duct having one end connected to the second duct 12 and the other end connected to the room ( 13) may be further included. To describe this in more detail, when high humidity air flows into the duct pipe through the vent hole 2 in the indoor space 1, the dehumidifying part 300 collects water vapor of air, and the humidity of the air passing through is increased. Can be lowered. And a part of the air is lowered humidity is introduced into the room again through the circulation duct 13, it is possible to maintain the humidity of the indoor space (1) to a certain level. In FIG. 14, the air discharged from the indoor space 1 is dehumidified and recycled, and the present invention may be configured to transfer the dehumidified air to another place instead of the same indoor space 1.

Although the present invention has been described through specific embodiments such as specific components and limited embodiment drawings through the above embodiments, this is only provided to help a more general understanding of the present invention, and the present invention is limited to the above embodiment. Various modifications and variations can be made by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all claims having equivalent or equivalent modifications to the claims as well as the following claims are intended to be included in the scope of the spirit of the present invention. will be.

(Explanation of the sign)

1: indoor space 2: vent

10: duct piping

11: first duct 12: second duct

13: circular duct

20: passage

31: injection valve 32: discharge valve

100: membrane

110: inlet 120: suction

130: discharge part

200: membrane module

210: oil inlet 230: main outlet

300: dehumidifying unit

400: gas-liquid separator

500: vacuum pump

610: Front air tube

620: rear air tube

The dehumidification system using the membrane of the present invention relates to a dehumidifying apparatus for dehumidifying an indoor space, and has industrial applicability.

Claims

The dehumidification system using the membrane installed in the duct pipe,

The dehumidification system includes a membrane module (200) in which a membrane (100) formed to flow fluid therein is arranged in a plurality of layers;

A main inlet 210 for supplying a fluid to the membrane 100 of the membrane module 200; And

It includes a dehumidifying unit 300 including a main outlet 220 for discharging the fluid inside the membrane 100 trapped water vapor,

The dehumidifying unit 300 is coupled between the divided duct pipes or arranged in the duct pipes, characterized in that formed, dehumidification system using a membrane.
The method of claim 1,

The membrane 100 has an inlet 110 through which fluid flows so that the fluid flows therein, an outlet 130 through which the fluid is discharged from the membrane 100, and between the inlet 110 and the outlet 130. To connect, characterized in that it comprises a suction unit 120 for collecting the external water vapor, dehumidification system using the membrane.
The method of claim 2,

The membrane module 200 is formed by stacking the membrane 100 spaced apart a predetermined interval up and down,

Effective diameter of the membrane module 200 is characterized in that 25 to 35% of the effective diameter of the dehumidifying unit 300, dehumidification system using a membrane.
The method of claim 3,

The suction part 120 is made of a material that can pass water vapor, the fluid introduced from the inlet 110 is formed lower than the external air pressure, characterized in that the external water vapor is introduced into the membrane Dehumidification system using.
The method of claim 4, wherein

The membrane 100 is formed of a hollow fiber membrane of a polymer material, characterized in that it has a coating layer of a hydrophilic material of 100nm ~ 200nm thickness inside to increase the selectivity of water vapor in the air, dehumidification system using a membrane.
The method of claim 5,

The membrane 100 is formed to have a coating layer of carboxylated TiO 2 nanoparticles in a polyamide polymerized by reacting with 3,5-diaminobenzoic acid, dehumidification system using a membrane.
The method of claim 3,

The membrane module 200 includes an injection valve 31 for adjusting the state of the fluid flowing into the main inlet 210 and a discharge valve 32 for controlling the state of the fluid discharged from the main outlet 230. Dehumidification system using the membrane.
The method of claim 3,

The dehumidifying unit 300 has a plurality of membrane modules 200 is embedded therein,

The plurality of membrane modules (200) is characterized in that it is disposed along the front and rear direction of the dehumidifying unit 300, dehumidification system using a membrane.
The method of claim 1,

The duct pipe 10 includes a first duct 11 connected to the indoor and a second duct 12 connected to the outdoor,

The dehumidifying unit 300 is a front surface is coupled to the first duct (11), the rear surface is coupled to the second duct (12), dehumidification system using a membrane.
The method of claim 9,

The duct pipe 10 further includes a circulation duct 13 having one end connected to the second duct 12 and the other end connected to the room.

Air dehumidified in the dehumidification unit 300 is a dehumidification system using a membrane, characterized in that the re-introduction into the room through the circulation duct (13).
The method of claim 10,

The dehumidification unit 300 is provided with a plurality, the dehumidification system using a membrane, characterized in that further installed on the circulation duct (13).