KR101529697B1 - Functional polymer spacer and heat exchange unit comprising the same - Google Patents

Abstract

A functional polymer spacer and a heat transfer element comprising the same are disclosed. To this end, there is provided a functional polymer spacer including a film-shaped polymer spacer including a polymer resin and a moisture absorption means formed on the polymer spacer for improving the hygroscopicity of the polymer spacer, and a heat transfer element comprising the polymer spacer. By adding a moisture-permeable means capable of imparting hygroscopicity to the polymeric synthetic resin, not only the liner but also the spacer can have a large amount of moisture in the air passing through the heat transfer element. Considering that latent heat as well as sensible heat of the air passing through the space formed by the liner spacer is an important factor in the heat transfer through the liner, the spacers have hygroscopicity, so that the surface of the liner and the spacer has a high- Thereby facilitating mass transfer, and the latent heat increase can be utilized for heat transfer. Accordingly, the heat transfer efficiency is superior to that of the conventional heat transfer device having only the improved liner, thereby overcoming the disadvantages of the conventional paper material and replacing expensive materials such as aluminum.

Description

TECHNICAL FIELD [0001] The present invention relates to a functional polymer spacer, and a heat transfer element comprising the functional polymer spacer.

The present invention relates to a functional polymer spacer and a heat transfer element comprising the spacer, and more particularly, to a spacer for a heat transfer element, To a functional polymer spacer capable of remarkably improving performance and a heat transfer element including the same.

The total enthalpy heat exchanger, which is a heat recovery type ventilator, is a heat exchanger that ventilates indoor air and simultaneously performs heat exchange between exhaust and air supply. This conveys the heat of the air exhausted to the outside to the air supplied to the room while ventilating indoor and outdoor air, thereby enabling efficient use of energy, thereby preventing sudden temperature changes in the room.

A general form of the heat transfer element used in this total heat exchanger is shown in Fig. 1 is a perspective view illustrating a structure of a heat transfer element.

1, the heat transfer element 13 includes a liner 24 provided in a flat plate shape and a corrugation spacer 23 formed in a sinusoidal shape to be coupled to one surface of the liner 24 through an adhesive or the like, Are sequentially stacked and formed.

Generally, the heat exchange between the exhaust and the feedstock is made via the liner 24. Therefore, it is known that the heat exchange performance of the heat recovery ventilator depends on the properties of the selected liner.

As such a liner, a thin metal plate such as a paper material or aluminum is used, and a polymer synthetic resin film is recently used.

The paper-made liner has an advantage that it can utilize latent heat which absorbs water vapor in a high humidity region as well as sensible heat and vaporizes water vapor in a low humidity region, but has a very low thermal conductivity (thermal conductivity coefficient) and has a problem of breeding such as mold. In the case of the aluminum liner, the thermal conductivity is very good, but the moisture permeability is poor and the heat transfer due to the latent heat can not be utilized, and corrosion of aluminum due to moisture is not only problematic but also expensive.

In order to overcome the problems of such paper or aluminum liner, techniques using polymeric synthetic resin as a liner have been proposed. When the synthetic resin is used as a liner, there is no fear of corrosion and the heat transfer efficiency close to the paper can be achieved. However, such a synthetic resin still has a lower heat transfer performance than a metal having a high heat transfer coefficient such as aluminum, and has a low hygroscopicity, which makes it difficult to use heat transfer as well as sensible heat to latent heat.

In order to solve these problems, there has been proposed a technique of forming a coating layer on the surface of a polymer synthetic resin liner to improve moisture absorption and moisture permeability.

FIG. 2 is a cross-sectional view illustrating a heat transfer device according to the prior art, and FIG. 3 is a cross-sectional view illustrating a heat transfer process in the heat transfer device of FIG.

2, when the moisture absorbing layer 110 is formed on the surface of the polymer liner 100, moisture of air passing through the channel can be absorbed, thereby permeating water molecules into not only the sensible heat but also the low humidity region, Can be used for heat transfer, and the heat transfer efficiency can be improved.

: 라이너를 통과하는 물분자의 질량유량). 그러나 이 때 스페이서는 단순히 기류가 지나가는 통로역할만을 수행할 뿐, 열전달에 기여하지는 못하게 된다. That is, when a polymer liner having a hygroscopic layer is combined with a general spacer, moisture (water vapor) in the air passing through the flow path moves to the low humidity region only through the liner surface in contact with air, (

: Mass flow rate of water molecules passing through the liner). At this time, however, the spacer merely serves as a passage through which the airflow passes, and does not contribute to heat transfer.

Thus, the existing heat transfer device technologies are being developed with an emphasis on improvement of the liner as a medium in which heat is transferred.

1, the spacers 23 are arranged orthogonal to the adjacent spacers 23, one of which forms an exhaust layer 21 formed to communicate with an exhaust passage, and the other of which forms an exhaust passage 21, Thereby forming an air supply layer 22 formed so as to communicate therewith. Such a spacer can also be made of paper, aluminum, synthetic resin or the like. When aluminum or a synthetic resin is used, durability can be excellent, but the hygroscopicity is poorer than that of paper.

Thus, in the conventional technologies, the spacer maintains the shape of the heat transfer element and serves only to provide a passage for fluid such as air, but has a very low level of contribution to heat transfer. However, the heat transfer efficiency through the liner can vary significantly depending on the amount of moisture absorbed in the air passing through the flow path formed by the spacer and the liner.

Therefore, by using the polymer synthetic resin having low hygroscopicity and moisture permeability as the spacer, the durability and the hygienic property are improved, and the spacer is improved so that the water vapor in the air is faded on the surface of the spacer and the liner, It is required to develop a technique for utilizing latent heat for hot rolling transfer by doubling the mass transfer capability.

Korean Patent No. 10-1206150 (issued on November 22, 2012) Korean Patent No. 10-737695 (published on Mar. 3, 2007) U.S. Published Patent Application No. 2006/0168813 (published Aug. 3, 2006)

A first object of the present invention is to provide a functional polymer spacer capable of remarkably improving the heat transfer efficiency of a heat transfer element by allowing the heat transfer element to be used for heat transfer by latent heat of a larger amount of moisture in the air moving due to its excellent hygroscopicity .

A second object of the present invention is to provide a functional polymer spacer capable of significantly improving the heat transfer efficiency of a heat transfer element by allowing the heat transfer element to be used for heat transfer due to latent heat of a larger amount of moisture in the air, And to provide a heat transfer element using the same.

In order to achieve the first object of the present invention, in one embodiment of the present invention, a film-shaped polymeric spacer including a polymer resin and a moisture absorbing means formed on the polymeric spacer for improving the hygroscopicity of the polymeric spacer Functional polymer spacer.

Further, in order to achieve the second object of the present invention, there is provided a liner for mediating heat transfer between channels; And a functional polymer spacer which is formed with the liner therebetween to form a flow path, and a hygroscopic means for promoting heat transfer by water transfer through the liner.

According to the present invention, a functional polymeric synthetic resin is replaced with a spacer instead of aluminum, which is not only durable and hygienically problematic but also has a very low heat transfer efficiency, is relatively expensive, has a fear of corrosion, and is not hygroscopic or moisture- can do.

In this case, since it has excellent durability, it not only stably supports the heat transfer element but also has hygroscopicity but dries quickly, so that it is less likely to cause mold or corrosion even when exposed to a long and humid environment.

Above all, by adding a moisture permeable means capable of imparting hygroscopicity to the polymer synthetic resin, not only the liner but also the spacer can have a large amount of moisture in the air passing through the heat transfer element. Considering that latent heat is an important factor in the heat transfer through the liner, as well as the sensible heat of the air passing through the space consisting of the liner and the spacer, the spacers have hygroscopicity, which results in a significantly increased amount of water transfer Can be used.

Accordingly, the heat transfer efficiency is superior to that of the conventional heat transfer device having only the improved liner, thereby overcoming the disadvantages of the conventional paper material and replacing expensive materials such as aluminum.

As a result, it contributes to the effective use and saving of energy and can contribute to the progress of the green economy.

1 is a perspective view illustrating a structure of a heat transfer element.
2 is a cross-sectional view illustrating a conventional heat transfer device.
3 is a cross-sectional view illustrating a heat transfer process in the heat transfer device of FIG.
4 is a cross-sectional view illustrating a heat transfer device according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a heat transfer process in the heat transfer device of FIG.

Hereinafter, a spacer and a heat transfer device according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a structure of a heat transfer element. 4 is a cross-sectional view illustrating a heat transfer device according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating a heat transfer process in the heat transfer device of FIG.

Referring to FIG. 1, the heat transfer device according to the present invention includes a liner and a spacer formed to flow air in a direction crossing the liner. FIG. 1 shows a general heat transfer element shape. In the case of the present invention, the material of the spacer is improved while having such a general heat transfer element shape.

2 and 3, the functional polymer spacer according to an embodiment of the present invention includes a film-shaped polymer spacer 200 including a polymer resin, and a polymer spacer formed on the polymer spacer for improving the moisture absorption of the polymer spacer And includes moisture absorption means (210, 220).

First, the functional polymer spacer has a film-like polymer spacer 200 including a polymer resin.

The polymer resin may be a material having a certain holding power or a material capable of substituting for aluminum. For example, polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC) can be used. Particularly, in order to increase the hygroscopicity, the polymer resin may be produced in a film form and may be hydrophilic (hydrophilic), which contributes to increase the moisture permeability, which is a degree of rapid transfer (absorption and desorption) of water to the backbone or side chain of the polymer It is more advantageous to add hydrophilic functional groups

 In addition, the polymer-functional spacer according to the present invention includes a moisture absorber formed on the polymer spacer to improve the hygroscopicity of the polymer spacer 200.

First, the moisture absorbing means may be formed, for example, in the form of a hygroscopic layer formed on the polymer spacer, coated on the polymer spacer, or formed inside the spacer.

4, when the moisture absorbing layers 210 and 220 are formed on the polymer spacer, they may be formed on one side or both sides of the polymer spacer, but they are formed on both sides of the spacer, Can be performed. Further, it may be formed in the form of a separate layer inside the spacer. Particularly, when the spacer is composed of a plurality of layers, textures, and textures, the hygroscopic layer may be formed in the spacer in the process of forming the spacer.

Such a hygroscopic layer is formed by applying a liquid composition containing a hygroscopic agent or hygroscopic particles, and its concentration and the like are not limited, but the thickness is preferably 1 to 200 mu m. Examples of the hygroscopic material for promoting moisture absorption of the spacer include lithium chloride (LiCl), phosphate, calcium carbonate, silica, zeolite, bentonite, molecular sieve, talc, heavy carbon or cray.

In another form, the moisture absorption means may make the spacer so that the hygroscopic particles are contained in the polymer spacer. In this case, it is preferable that the hygroscopic particles have a particle size of 0.1 to 150 탆 and 1 to 70 parts by weight with respect to 100 parts by weight of the polymer spacer.

Generally, when the liner has hygroscopicity or moisture permeability, only the moisture absorbed in the liner contributes to the heat transfer due to the latent heat, thereby limiting the improvement of the heat transfer efficiency (see FIG. 3). However, referring to FIG. 5, when the moisture absorbing means is provided in the spacer as in the present invention, the air passing through the air flow passage partitioned by the liner and the spacer in the heat transfer element absorbs a larger amount of moisture, The latent heat utilization part is remarkably improved.

That is, in the case of FIG. 3 showing the prior art in which only the liner is provided with the moisture absorbing means, the part where the moisture can be put is one surface of the liner. In the present invention, however, Plane. Therefore, theoretically, the latent heat utilization effect can be expected to be three times higher than that in the case where only the liner is provided with the moisture absorption means.

)은 공기에서 라이너 방향으로 이동된 수분(수증기)뿐만이 아니라 흡습 상태의 기능성 고분자 스페이서 표면의 고습영역에서도 라이너 쪽으로 이동하는 질량유량(

)이 더해져 라이너에서만 전달되는 것과 비교하면 질량유량이 현저하게 증가한다. Specifically, referring to FIG. 5, the movement of moisture in the air in the heat transfer device formed of the combination of the liner and the functional polymer spacer moves to the high-humidity region on the surface of the liner and the surface of the functional polymer spacer, wetting state. As a result, the mass flow rate through the liner (

Not only the moisture (water vapor) moved from the air to the liner direction but also the mass flow rate moving toward the liner in the high humidity region of the surface of the functional polymer spacer in the hygroscopic state

) Is added and the mass flow rate is significantly increased compared to that delivered only in the liner.

The polymer spacer may further include a heat transfer coating layer for promoting heat transfer due to a temperature difference, i.e., sensible heat transfer, or heat transfer means such as heat transfer particles. Through which the heat of the air passing through the passages separated by the spacer is smoothly transferred from the spacer to the liner portion, thereby contributing to the heat transfer efficiency of the heat transfer element.

Examples of such heat transferring means include high thermal conductive metal particles, SiC, carbon black, carbon nanotubes, or conductive polymers.

The present invention also provides a heat transfer element comprising the above-described functional polymer spacer.

First, the heat transfer device according to the present embodiment includes a liner 100 that mediates heat transfer between channels.

The liner may be made of paper, aluminum or the like, but in the present invention, it is preferable to use a polymer synthetic resin in consideration of bonding with the spacer. The liner may further include heat transfer particles which are high thermal conductive metal particles, SiC, carbon black, carbon nanotubes, or a conductive polymer for promoting heat transfer, since they are heat transferring elements in the heat transfer element. The heat transfer particles may be formed on the liner, or may be formed in the form of being encapsulated in the liner.

Furthermore, the moisture absorption means 110 may be provided to increase the hygroscopicity and the moisture permeability to utilize the heat transfer by the latent heat. It is preferable that the thickness is 1 to 200 탆. Examples of the hygroscopic material for promoting moisture absorption include lithium chloride (LiCl), phosphate, calcium carbonate, silica, zeolite, bentonite, molecular sieve, talc, Cray, and the like, and a high moisture permeable polymer resin containing the same.

Examples of the high moisture permeable polymer resin include acrylic, urethane, and olefin resins, and organic and aqueous systems can be used depending on the production process.

The heat transfer device according to this embodiment includes a functional polymer spacer having a moisture absorption means.

These spacers are formed with the liner 100 therebetween to form a flow path, and have a moisture absorption means for promoting heat transfer by water transfer through the liner. The moisture absorption means may be a hygroscopic layer formed on one side or both sides of the polymer spacer, and the hygroscopic means may be a hygroscopic particle contained in the polymer spacer.

Examples of the hygroscopic material include additives such as lithium chloride (LiCl), phosphate, calcium carbonate, silica, zeolite, talc, molecular sieve (powder) or cray, and high moisture permeability polymer resins including the additives. As described above, the spacer is also provided with a hygroscopic property so that heat transfer due to moisture movement through the liner is smooth. Examples of the high moisture permeable polymer resin include acrylic, urethane, and olefin resins, and organic and aqueous systems can be used depending on the production process.

Further, it may further include a bonding means for bonding the liner and the functional polymer spacer on the bonding surface of the liner and the functional polymer spacer in the process. In this case, the adhesive preferably includes the above-described moisture absorbing means.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. It can be understood that it is possible.

13: heat transfer element 21: exhaust layer
22: supply layer 23: spacer
100: liner 110: moisture absorbing means
200: Spacers 210 and 220:

Claims (16)

delete delete delete delete delete delete delete delete delete delete A liner that mediates heat transfer between the passages; And
A polymeric spacer having a film shape formed through the liner to form a flow path and a polymeric spacer formed on both surfaces of the polymeric spacer so as to perform a hygroscopic function in both left and right air passages promoting heat transfer through water transfer through the liner And a functional polymer spacer composed of a hygroscopic layer formed on the substrate,
The liner includes moisture absorbing means provided on the surface of the liner in contact with the air to improve the hygroscopicity. The liner includes a high heat conductive metal particle for promoting heat transfer of the liner, SiC, carbon black, a carbon nanotube, Is contained in the inside of the heat transfer element. delete delete delete delete 12. The functional polymeric spacer according to claim 11, further comprising bonding means provided on a bonding surface of the liner and the functional polymer spacer to bond the functional polymer spacer with the liner,
Wherein the adhesion means comprises a moisture absorption means.

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