KR100437591B1 - Plastics heat exchanger for exhaust heat withdrawal - Google Patents
Plastics heat exchanger for exhaust heat withdrawal Download PDFInfo
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- KR100437591B1 KR100437591B1 KR10-2002-0020114A KR20020020114A KR100437591B1 KR 100437591 B1 KR100437591 B1 KR 100437591B1 KR 20020020114 A KR20020020114 A KR 20020020114A KR 100437591 B1 KR100437591 B1 KR 100437591B1
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- heat transfer
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- transfer plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
본 발명은 산업체와 상업용 건물의 공기조화장치 또는 아파트, 지하상가,지하철 등의 환기장치에서 배출되는 배기열을 회수함으로써 냉난방 에너지를 절약할 수 있는 열교환기에 관한 것으로, 특히 전열판에 열경계층을 끊고 유동을 교란시키는 난류촉진바가 일정간격으로 배치되어 작동유체의 열을 보다 활발하게 전달시키는 동시에 상기 난류촉진바에 설치된 와류발생돌기 주위에 말굽와류(Horseshoe vortex)가 발생되어 열전달 성능이 향상될 수 있도록 한 배기열 회수용 플라스틱 열교환기에 관한 것이다.The present invention relates to a heat exchanger that can save the heating and cooling energy by recovering the exhaust heat discharged from the air conditioning device of the industrial and commercial buildings or the ventilation device of the apartment, underground shopping mall, subway, etc. Disturbing turbulent flow promoting bar is arranged at regular intervals to more actively transfer the heat of the working fluid, and at the same time the horseshoe vortex (Horseshoe vortex) is generated around the vortex generating protrusion installed in the turbulent acceleration bar to improve the heat transfer performance An accommodating plastic heat exchanger.
이러한 본 발명은 박막의 플라스틱을 이용하여 전열판을 제작한 후 상기 전열판에 일정간격으로 상,하 엇갈리게 난류촉진바를 배치하여 전열판을 따라 발달하는 열경계층을 파괴하는 한편 유체의 유동을 교란시켜 작동유체의 열이 보다 활발하게 전달될 수 있도록 한다.The present invention is to produce a heat transfer plate using a thin film of plastic and then arranged on the heat transfer plate with a turbulent acceleration bar alternately up and down at a predetermined interval to destroy the thermal boundary layer developed along the heat transfer plate while disturbing the flow of the working fluid of the working fluid It allows the heat to be transferred more actively.
또한 각각의 난류촉진바에 지그재그 형태로 원기둥형 와류발생돌기를 설치하여 와류발생돌기 주위에서 자연적으로 말굽와류가 발생되게 하므로써 열전달을 촉진시키며, 상기 난류촉진프레임이 설치된 전열판을 90° 방향의 교호로 적층시키므로써 이루어지는 것이다.In addition, by installing a cylindrical vortex generating protrusion in a zigzag form on each turbulent acceleration bar to facilitate the horseshoe vortex to be generated around the vortex generating protrusion, it promotes heat transfer, and alternately stacks the heat transfer plate on which the turbulence promoting frame is installed in a 90 ° direction. It is done by making.
Description
본 발명은 산업체와 상업용 건물의 공기조화장치 또는 아파트, 지하상가, 지하철 등의 환기장치에서 배출되는 배기열을 회수함으로써 냉난방 에너지를 절약할 수 있는 열교환기에 관한 것으로, 특히 전열판에 열경계층을 끊고 유동을 교란시키는 난류촉진바가 일정간격으로 배치되어 작동유체의 열을 보다 활발하게 전달시키는 동시에 상기 난류촉진바에 설치된 와류발생돌기 주위에 말굽와류(Horseshoe vortex)가 발생되어 열전달 성능이 향상될 수 있도록 한 배기열 회수용 플라스틱 열교환기에 관한 것이다.The present invention relates to a heat exchanger that can save the heating and cooling energy by recovering the exhaust heat discharged from the air conditioner of the industrial and commercial buildings or the ventilation device of the apartment, underground shopping mall, subway, etc. Disturbing turbulent flow promoting bar is arranged at regular intervals to more actively transfer the heat of the working fluid, and at the same time the horseshoe vortex (Horseshoe vortex) is generated around the vortex generating protrusion installed in the turbulent acceleration bar to improve the heat transfer performance An accommodating plastic heat exchanger.
근래에는 쾌적한 환경의 추구로 인하여 냉난방을 위한 공조시스템과 환기장치의 사용은 확대되었으며, 이로 인해 여름 및 겨울의 에너지 사용량이 급증하고 있는 것이었다.In recent years, the use of air conditioning and ventilation systems for heating and cooling has been expanded due to the pursuit of a pleasant environment, which has led to a surge in energy consumption in summer and winter.
특히 상기 공조시스템과 환기장치에서 나오는 배기열은 온도는 낮지만 그 양이 대단히 많음은 물론 도입되는 외기를 가열 또는 냉각하는데 직접 사용할 수 있기 때문에 배기열 회수에 대한 대책이 시급한 실정인 것이었다.In particular, since the exhaust heat from the air conditioning system and the ventilation device is low in temperature, the amount of exhaust heat is very high, and since the exhaust heat can be directly used for heating or cooling the introduced outside air, it is urgent to take measures against exhaust heat recovery.
게다가 에너지 절약의 일환으로 실내 공간은 더욱더 밀폐와 단열을 요구하게 되었고, 결과적으로 환기량이 적게 됨에 따라 실내 공기의 질은 악화되었으며, 이를 해결하고자 적절한 배기열 회수장치가 부착된 환기시설의 설치가 요구되고 있는 것이었고 이와 같은 배기열 회수장치를 사용할 경우 50∼70%의 배기열을 회수하여 냉난방에 소요되는 에너지를 상당부분 절약할 수 있는 것이었다.In addition, as part of energy saving, indoor spaces are required to be more sealed and insulated, and as a result, the amount of indoor air deteriorates as the amount of ventilation is reduced. To solve this problem, it is required to install a ventilation system equipped with an appropriate exhaust heat recovery system. When the exhaust heat recovery device is used, 50 to 70% of the exhaust heat can be recovered to save a considerable amount of energy for heating and cooling.
종래의 공조시스템에서는 회전축열식 열교환기, 히트파이프식 열교환기, 알루미늄 판형 열교환기 등이 배기열 회수용으로 주로 사용되고 있으나, 이들 열교환기는 유지,관리가 어렵고 고가이기 때문에 건축설계자나 건물주가 사용을 기피하여일부 상업용 건물에만 적용되고 있는 실정이다. 따라서 가격이 저렴하며 설치가 쉽고 열전달 성능이 뛰어난 소형 열교환기로 대체되고 있는 추세이다.In the conventional air conditioning system, a rotary heat storage heat exchanger, a heat pipe type heat exchanger, and an aluminum plate heat exchanger are mainly used for exhaust heat recovery.However, these heat exchangers are difficult to maintain and manage and are expensive, and thus they are avoided by architects or building owners. It is only applied to some commercial buildings. Therefore, it is being replaced by a small heat exchanger that is inexpensive, easy to install, and has excellent heat transfer performance.
지금까지는 알루미늄이 배기열 회수용 열교환기의 재료로 주로 이용되어 왔으나, 현재는 플라스틱이나 종이 등의 다양한 비금속 재질의 사용이 증대되고 있다. 비금속 재질의 열교환기는 저가로 제작할 수 있으며, 경량화 할 수 있고, 부식의 위험이 적다는 장점을 가지고 있다. 그러나 열전도계수가 알루미늄에 비해 매우 낮기 때문에 열전달 성능이 저하되는 문제점이 있는 것이었다.Until now, aluminum has been mainly used as a material for heat exchanger for exhaust heat recovery, but nowadays, the use of various nonmetal materials such as plastic or paper is increasing. Non-metal heat exchangers have the advantages of low cost, light weight, and low risk of corrosion. However, since the thermal conductivity is very low compared to aluminum, there was a problem that the heat transfer performance is reduced.
즉 비금속 재료를 이용한 종래의 플라스틱 열교환기는 아직 연구가 미비하고 무엇보다 열전달을 촉진시키기 위한 많은 연구가 수행되지 않아 일반적으로 평판-핀형의 단순한 형상으로 이루어진 것으로, 낮은 열교환 효율을 보이고 있어 배기열 회수를 통한 에너지 절약효과가 알루미늄 열교환기에 비해서 미약한 실정인 것이었다.In other words, conventional plastic heat exchangers using non-metallic materials have not been studied yet, and most of them have not been studied to promote heat transfer. Therefore, the conventional plastic heat exchanger has a simple flat plate-like shape, and shows low heat exchange efficiency. The energy saving effect was weak compared to the aluminum heat exchanger.
본 발명은 상기한 바와 같은 문제점을 해결하기 위한 방안으로 박막의 플라스틱을 이용하여 전열판을 제작한 후 상기 전열판에 일정간격으로 상,하 엇갈리게 난류촉진바를 배치하여 전열판을 따라 발달하는 열경계층을 파괴하는 한편 유체의 유동을 교란시켜 작동유체의 열이 보다 활발하게 전달될 수 있는 기술을 강구한다.The present invention is to solve the problems as described above by manufacturing a heat transfer plate using a thin film of plastic to arrange the turbulent acceleration bar alternately up and down at a predetermined interval on the heat transfer plate to destroy the thermal boundary layer developed along the heat transfer plate On the other hand, by devising a technique to disturb the flow of the fluid can be more actively transfer the heat of the working fluid.
또한 각각의 난류촉진바에 지그재그 형태로 원기둥형 와류발생돌기를 설치하여 와류발생돌기 주위에서 자연적으로 말굽와류가 발생되게 하므로써 열전달을 촉진시킬 수 있는 기술을 강구한다.In addition, by devising a cylindrical vortex generating protrusion in a zigzag form on each turbulent acceleration bar, a technology to promote heat transfer by naturally generating a horseshoe vortex around the vortex generating protrusion is devised.
또한 상기 전열판을 다수개 적층시켜 열교환기를 구성하되 난류촉진프레임이 설치된 전열판을 90° 방향으로 엇갈리게 교호로 설치하여 배출공기와 외부공기가 직교류 상태로 통과하도록 한다.In addition, a plurality of the heat transfer plate is laminated to configure a heat exchanger, but the heat exchanger plate is installed alternately in the 90 ° direction alternately installed to allow the exhaust air and the outside air to pass in a cross flow state.
도 1 은 본 발명 열교환기의 분해사시도1 is an exploded perspective view of the heat exchanger of the present invention
도 2 는 본 발명 전열판과 난류촉진프레임의 분해사시도Figure 2 is an exploded perspective view of the heating plate and the turbulence promoting frame of the present invention
도 3 은 본 발명의 평면도3 is a plan view of the present invention
도 4 는 도 3의 A-A선 단면도4 is a cross-sectional view taken along the line A-A of FIG.
도 5 는 도 3의 B-B선 단면도5 is a cross-sectional view taken along the line B-B of FIG.
도 6 은 본 발명 와류발생돌기에 의한 와류발생 상태도Figure 6 is a vortex generation state diagram by the vortex generating protrusion of the present invention
도 7 은 본 발명의 성능평가 실시도7 is a performance evaluation of the present invention
[도면의 주요부분에 대한 부호의 설명][Explanation of symbols on the main parts of the drawings]
1: 열교환기 10: 난류촉진프레임 11: 유로생성바1: heat exchanger 10: turbulence promotion frame 11: flow path generation bar
13: 유로 14: 난류촉진바 15: 와류발생돌기13: Euro 14: Turbulence promotion bar 15: Vortex generating protrusion
20: 전열판20: electric plate
본 발명은 난류를 촉진시키기 위한 특성을 갖는 난류촉진형 열교환기(1)에 관한 것으로 구성을 첨부된 도면에 의거 상세하게 설명하기로 한다.The present invention relates to a turbulent flow-promoting heat exchanger (1) having a characteristic for promoting turbulence and will be described in detail with reference to the accompanying drawings.
도 1 내지 도 2 는 본 발명의 전체적인 구성을 한눈에 보여주는 것으로, 본 발명 열교환기(1)를 살펴보면 전체적으로 사각체의 형상을 갖는 전열판(20)과, 상기 전열판(20)에 부착되는 난류촉진프레임(10)으로 구성된다.1 to 2 show the overall configuration of the present invention at a glance, the heat exchanger 1 of the present invention looks at the heat transfer plate 20 having a rectangular shape as a whole, the turbulent acceleration frame attached to the heat transfer plate 20 It consists of (10).
난류촉진프레임(10)은 전열판(20)의 상부면 양측에 위치되도록 유로생성바(11)를 설치하며 유로생성바(11)의 사이에는 분리바(12)를 설치한다.The turbulent flow promoting frame 10 installs a flow path generating bar 11 so as to be positioned at both sides of the upper surface of the heat transfer plate 20, and a separation bar 12 is installed between the flow path generating bar 11.
유로생성바(11)는 전열판(20)의 양측을 밀폐시켜 인접된 다른 양측을 통해 작동유체가 일방향으로만 유동할 수 있는 유로(13)를 생성하는 역할을 한다.The flow path generating bar 11 seals both sides of the heat transfer plate 20 and serves to generate a flow path 13 through which the working fluid flows in only one direction through other adjacent two sides.
여기에서 유로(13)의 일측을 통해 유입된 작동유체가 전열판(20)을 통과할 때 열경계층을 끊고, 유동을 교란시키도록 난류촉진바(14)를 일정간격으로 설치하되 난류촉진바(14)는 상,하 교대로 엇갈리게 설치하여 연속 설치된 난류촉진바(14)가 전체적으로 물결모양의 굴곡을 갖도록 한다.Here, when the working fluid introduced through one side of the flow path 13 passes through the heat transfer plate 20, the turbulence promotion bar 14 is installed at a predetermined interval to interrupt the flow and disrupt the flow. ) Is installed alternately up and down alternately so that the turbulent acceleration bar 14 continuously installed has a wave shape curve as a whole.
따라서 난류촉진바(14)는 전열판(20)을 따라 발달하는 열경계층을 파괴하는 동시에 작동유체의 유동을 교란시켜 난류를 촉진시키므로써 작동유체의 열을 전열판(20)에 보다 활발하게 전달시키는 역할을 하게 된다.Therefore, the turbulence promoting bar 14 serves to more actively transfer the heat of the working fluid to the heat transfer plate 20 by disrupting the flow of the working fluid and promoting turbulence by disrupting the flow boundary layer developed along the heat transfer plate 20. Will be
게다가 추가적으로 열전달을 증가시키기 위한 방법으로 도 3과 같이 연속적으로 설치된 각각의 난류촉진바(14)에 지그재그 형태로 와류발생돌기(15)를 배치한다.In addition, the vortex generating protrusions 15 are arranged in a zigzag form on each of the turbulence promoting bars 14 continuously installed as shown in FIG. 3 as a method for increasing heat transfer.
와류발생돌기(15)는 원기둥의 형상으로 도 6 과 같이 작동유체가 유동하면서 주위에 말굽와류(Horseshoe vortex)를 발생시키는 역할을 하여 열전달을 증가시키게 된다.Vortex generating protrusion 15 increases the heat transfer by acting to generate a horseshoe vortex around the working fluid flows as shown in Figure 6 in the shape of a cylinder.
한편 상기 전열판(20)을 비롯한 모든 구성요소는 폴리프로필렌(PP)과 같은 플라스틱을 주원료로 하되 플라스틱의 경우 종래의 알루미늄에 비해 열전달계수가 낮아 열전달 성능이 저하됨을 방지하기 위해 열전달 촉진기술을 접목하여 전열판(20)과 유동공기 사이의 대류열저항을 감소시키므로써 열전달성능을 기존의 알루미늄 열교환기보다 향상될 수 있도록 한다.On the other hand, all components including the heat transfer plate 20 are made of plastic such as polypropylene (PP) as a main raw material, but in the case of plastic, the heat transfer coefficient is lower than that of conventional aluminum, and the heat transfer promotion technology is combined to prevent the heat transfer performance from deteriorating. By reducing the convective heat resistance between the heat transfer plate 20 and the flow air, the heat transfer performance can be improved than that of the conventional aluminum heat exchanger.
상기와 같이 난류촉진프레임(10)이 설치된 전열판(20)을 다수개 적층하여 열교환기(1)를 형성함에 있어 도 1 과 같이 난류촉진프레임(10)을 상호 엇갈리게 90° 방향의 교호로 적층시키는 과정을 반복적으로 실시한다.In the case of forming a heat exchanger 1 by stacking a plurality of heat transfer plates 20 provided with the turbulence promoting frame 10 as described above, as shown in FIG. 1, the turbulence promoting frames 10 are alternately stacked in a 90 ° direction. Repeat the process.
따라서 유로(13)는 적층 순서대로 직교류 상태로 설치되므로써 어느 한쪽의 유로(13)를 통해서는 단독으로 배출공기 만을 통과시키고 인접된 다른 유로(13)를 통해서는 외부공기를 단독으로 통과시켜 전열판(20)의 사이에서 배출공기와 유입공기가 직교류 상태로 통과하면서 상호간 열교환을 할 수 있도록 한다.Therefore, the flow path 13 is installed in a cross-flow state in the stacking order, so that only the exhaust air passes through one of the flow paths 13 alone, and external air passes through the other adjacent flow paths 13 alone. The exhaust air and the inflow air pass through the cross-flow state between (20) to allow heat exchange with each other.
도 7 은 이러한 본 발명의 성능평가를 위해 플라스틱을 이용한 종래의 평판-핀형, 본 발명의 난류촉진형을 설계,제작하여 성능평가를 실시한 결과를 나타낸 것이다.Figure 7 shows the results of performing the performance evaluation by designing, manufacturing a conventional flat-pin type, turbulence acceleration type of the present invention using a plastic for the performance evaluation of the present invention.
상기 성능평가 결과에 의하면 열전달 성능과 압력손실을 동시에 고려하여 동일 송풍기 동력에서의 성능을 비교한 결과 면풍속 2.5m/sec 에서 본 발명은 열전달 촉진기술이 적용되지 않은 평판형에 비해서 13% 증가하였고, 종래에 사용되고 있는 평판-핀형에 비해서는 38% 정도 증가하였으며, 풍속이 증가함에 따라 성능이 더욱더 향상됨을 알 수 있게 된다.According to the results of the performance evaluation, the performance of the same blower considering the heat transfer performance and the pressure loss at the same time, the result of the present invention is increased by 13% compared to the plate type without heat transfer promotion technology at a surface wind speed of 2.5m / sec As compared with the plate-pin type used in the related art, it has increased by about 38%, and as the wind speed increases, the performance is further improved.
본 발명은 현재 대부분 버려지고 있는 막대한 양의 아파트, 상업용 건물, 지하상가, 지하철, 공장 등의 공조 및 환기 배기열을 50%∼70% 회수할 수 있으므로 에너지를 획기적으로 절약할 수 있고, 기존의 알루미늄 열교환기에 비해 가격이 훨씬 저렴한 반면 종래 사용되고 있는 평판-핀형 플라스틱 열교환기에 비해 열성능을 30% 이상 향상시킬 수 있는 효과가 있게 된다.The present invention can recover 50% to 70% of the exhaust heat of the air conditioning and ventilation of the vast amount of apartments, commercial buildings, underground malls, subways, factories, etc., which are largely discarded, and thus it is possible to save energy drastically. While the price is much lower than that of the heat exchanger, the thermal performance can be improved by 30% or more compared with the flat plate-type plastic heat exchanger used in the related art.
또한 플라스틱을 주원료로 하므로 재활용을 통해 환경오염을 방지할 수 있는 효과가 제공된다.In addition, since plastic is used as a main raw material, it is possible to prevent environmental pollution through recycling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0020114A KR100437591B1 (en) | 2002-04-12 | 2002-04-12 | Plastics heat exchanger for exhaust heat withdrawal |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2002-0020114A KR100437591B1 (en) | 2002-04-12 | 2002-04-12 | Plastics heat exchanger for exhaust heat withdrawal |
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| KR20030081747A KR20030081747A (en) | 2003-10-22 |
| KR100437591B1 true KR100437591B1 (en) | 2004-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100803376B1 (en) | 2007-02-22 | 2008-02-13 | 주식회사 유에너셀 | Heat exchange device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6229579U (en) * | 1985-07-30 | 1987-02-23 | ||
| JPH07234087A (en) * | 1994-02-24 | 1995-09-05 | Daikin Ind Ltd | Heat exchanging element |
| JPH08178577A (en) * | 1994-12-26 | 1996-07-12 | Daikin Ind Ltd | Heat exchanger element |
| JP2000356493A (en) * | 1999-06-14 | 2000-12-26 | Matsushita Seiko Co Ltd | Heat exchanging element |
| JP2001174184A (en) * | 1999-12-20 | 2001-06-29 | Toray Eng Co Ltd | Heat exchanging segment and heat exchanging element for gas-to-gas, obtained by laminating the segment |
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2002
- 2002-04-12 KR KR10-2002-0020114A patent/KR100437591B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6229579U (en) * | 1985-07-30 | 1987-02-23 | ||
| JPH07234087A (en) * | 1994-02-24 | 1995-09-05 | Daikin Ind Ltd | Heat exchanging element |
| JPH08178577A (en) * | 1994-12-26 | 1996-07-12 | Daikin Ind Ltd | Heat exchanger element |
| JP2000356493A (en) * | 1999-06-14 | 2000-12-26 | Matsushita Seiko Co Ltd | Heat exchanging element |
| JP2001174184A (en) * | 1999-12-20 | 2001-06-29 | Toray Eng Co Ltd | Heat exchanging segment and heat exchanging element for gas-to-gas, obtained by laminating the segment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100803376B1 (en) | 2007-02-22 | 2008-02-13 | 주식회사 유에너셀 | Heat exchange device |
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| KR20030081747A (en) | 2003-10-22 |
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