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KR100999832B1 - Temperature excessive climbing prevention structure of solar collector - Google Patents

Temperature excessive climbing prevention structure of solar collector Download PDF

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Publication number
KR100999832B1
KR100999832B1 KR1020100086992A KR20100086992A KR100999832B1 KR 100999832 B1 KR100999832 B1 KR 100999832B1 KR 1020100086992 A KR1020100086992 A KR 1020100086992A KR 20100086992 A KR20100086992 A KR 20100086992A KR 100999832 B1 KR100999832 B1 KR 100999832B1
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South Korea
Prior art keywords
tube
conductor
heat
heat medium
temperature
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KR1020100086992A
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Korean (ko)
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정재욱
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세한에너지 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/50—Preventing overheating or overpressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)

Abstract

PURPOSE: A temperature overheat prevention structure of a double vacuum-tube type solar-heat collector is provided to prevent excessive heat transfer from occurring since under a low temperature, a conductor covers a heat medium pipe to raise conductivity and under a high temperature, the conductor is separated to lower conductivity. CONSTITUTION: For a temperature overheat prevention structure of a double vacuum-tube type solar-heat collector, a thermal conductive tube(11) is formed in a double vacuum tube(10). A heat medium tube(12), which circulates in an "U" shape, is installed in the thermal conductive tube. A "C" shape conductor is installed in the thermal conductive tube in the form of covering the heat medium tube. A conductor is formed from bimetal or a thermally inflating material. As the temperature becomes high, the interval between the conductor and the heat medium tube becomes far away. As the temperature becomes low, the conductor makes tight contact with the heat medium tube.

Description

이중진공관형 태양열 집열장치의 온도 과승 방지구조{Temperature excessive climbing prevention structure of solar collector}Temperature excessive climbing prevention structure of solar collector

본 고안은 태양열 집열장치에 관한 것으로, 좀 더 구체적으로는 이중 진공관 내부에 설치되는 열매체관에 계절별 또는 온도별로 열이 전달되는 정도가 자동으로 가변되도록 하는 것인바, 특히 여름철에 온도가 과하게 상승하는 것을 방지하여 집열을 최소화하도록 하는 구조에 관한 것이다.The present invention relates to a solar heat collector, and more specifically, the degree of heat transfer by season or temperature is automatically varied in a heat medium tube installed inside a double vacuum tube. It relates to a structure to prevent the collection to minimize the collection.

주지된 바와 같이 태양열 집열장치는 태양광선의 파동성질을 이용하는 태양에너지 광열학적 이용분야로 태양열의 흡수·저장·열변환 등을 통하여 건물의 냉난방 및 급탕 등에 활용하는 기술로서, 그 중의 대표적인 한 예가 진공관식 집열장치이다.As is well known, the solar heat collecting device is a field of solar energy photothermal application using wave characteristics of solar rays, and is used for cooling, heating and hot water supply of buildings through absorption, storage, and heat conversion of solar heat. It is a type collector.

이러한 진공관식 집열장치는 빛을 잘 흡수하는 검은색 관 속으로 물을 흐르게 하는 평판 집열관으로 이것은 빛을 투과하는 투명한 외부층(유리나 플라스틱)이 빛을 흡수하는 검은색의 내부구성물을 둘러싼 형태로 이루어져 온실효과를 일으키는 것으로, 빛이 집열판 속으로 들어오면 이것은 검은색의 내부에 부딪혀 적외선으로 바뀌는데 적외선은 투명층을 통과하지 못하므로 내부는 점점 더 뜨거워지고, 이렇게 뜨거워진 내부에는 열을 흡수하였다가 전달하는 열매체가 흐르는데 이 뜨거워진 열매체는 물과 열을 교환하여 난방용 또는 온수용 물을 생산하는 원리이다.This vacuum tube collector is a flat plate collector that allows water to flow into a black tube that absorbs light well. It is surrounded by a black inner material that absorbs light by a transparent outer layer (glass or plastic) that transmits light. When the light enters the heat collecting plate, it hits the inside of the black and turns into infrared, but since the infrared rays do not pass through the transparent layer, the inside becomes hotter and absorbs heat. This heating medium is the principle of producing water for heating or hot water by exchanging heat with water.

그런데 이러한 종래 진공관식 집열장치가 갖는 단점의 하나는 계절이나 기온에 따른 변화없이 집열이 이루어진다는 것이고, 이러한 문제에 의해 태양광의 온도가 매우 높음에도 열원의 소요가 거의 없는 여름철에는 열매가 과하게 온도가 상승하는 문제가 있었다.However, one of the disadvantages of the conventional vacuum tube collector is that the heat is collected without changing with the season or temperature. In this summer, the temperature of the fruit is excessively high even though the temperature of the solar light is very high. There was a problem of ascension.

이에 따라서 열매체관이나 이중 진공관의 파손이 일어날 수 있고 각 부분의 수명단축과 방열에 추가로 전력이 소요되는 등 많은 문제점이 존재하고 있었다.Accordingly, there are many problems such as breakage of the heat medium tube or the double vacuum tube, and additional power consumption in shortening the lifespan and heat dissipation of each part.

상기 문제점을 감안하여 안출한 본 발명은 진공관 내부의 열매체관이 흡수하는 열의 정도를 온도에 따라 자동으로 가변되도록 함으로써 과하게 온도가 집열됨에 의한 각 부분의 수명단축 등 문제를 방지하고, 필요한 시기에 원활한 집열이 유지될 수 있도록 하며, 전반적으로 태양열 집열장치를 매우 효율적으로 유지관리할 수 있도록 함을 목적으로 하는 것이다. The present invention devised in view of the above problems by automatically varying the degree of heat absorbed by the heat medium tube inside the vacuum tube according to the temperature to prevent problems such as shortening the life of each part due to excessive temperature collection, and smooth at the necessary time The purpose is to maintain the heat collection and to maintain the overall solar heat collection device very efficiently.

상기 목적을 달성하기 위한 본 발명은 진공관의 내부에 열매체관을 설치함에 있어서, 열매체관을 감싸는 열전달 전도체를 설치함에 있어서 전도체가 온도에 따라 변형율이 다른 재질로 구성한 전도체 또는 바이메탈 등을 적용하여 저온일 때는 전도체가 열매체관을 감싸면서 전달율을 높이고, 고온일 때는 전도체가 벌어지면서 전달율을 낮추도록 함으로써 하절기 온수 및 난방부하량이 작은 경우 태양에너지로부터 얻어지는 열전달량을 최소화할 수 있도록 열전도관과 열매체관의 접촉면적을 줄여주는 구조로 제작하여 불필요한 온도의 과승(過昇)을 막고자 함을 특징으로 하는 것이다.The present invention for achieving the above object in the installation of the heat transfer tube inside the vacuum tube, in the installation of a heat transfer conductor surrounding the heat transfer tube in the conductor is applied at a low temperature by applying a conductor or bimetal made of a different strain material according to the temperature When the conductor wraps around the heat transfer pipe to increase the transfer rate, and at high temperatures, the conductor expands to reduce the transfer rate. It is characterized by the fact that it is designed to reduce the area to prevent unnecessary temperature overheating.

이러한 본 발명에 의하면, 한여름과 같이 기온이 상당히 높아서 불필요하게 과도한 집열이 일어나는 경우에 바이메탈 방식의 가변 전도체가 벌어지면서 열전달율을 낮추게 되므로, 과도한 열에 의해 집열장치 전반적인 부분의 수명이 단축되는 것을 방지할 수 있고, 유지관리를 원활하게 할 수 있게 되는 효과가 있다. According to the present invention, when the temperature is considerably high such as midsummer, when the excessive excessive heat collection occurs, the bimetal-type variable conductor is opened to lower the heat transfer rate, thereby preventing the overall life of the heat collecting device from being shortened by excessive heat. It is effective in making maintenance smooth.

도 1은 본 발명에 의한 진공관식 집열장치의 정면도
도 2는 도 1의 A-A선 단면도
도 3은 도 2의 요부확대도
도 4는 도 2의 부분 확대도
도 5는 도 4의 작용상태도
도 6은 본 발명의 요부 사시도
도 7은 본 발명의 다른 실시 예시도
도 8은 본 발명의 또 다른 실시 예시도1 is a front view of a vacuum tube heat collecting device according to the present invention
2 is a cross-sectional view taken along the line AA of FIG.
3 is an enlarged view illustrating main parts of FIG. 2;
4 is a partially enlarged view of FIG. 2;
5 is a state diagram of the operation of FIG.
6 is a perspective view of main parts of the present invention;
Figure 7 is another embodiment of the present invention
8 is another exemplary embodiment of the present invention

이하 본 발명을 실시하기 위한 바람직한 구성 실시 예를 첨부된 도면에 의거 상세히 살펴보면 다음과 같다.
Hereinafter, a preferred embodiment of the present invention for carrying out the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 진공관식 집열장치를 살펴보면, 이중으로 된 진공관(10)의 내부에 열전도관(11)을 구성하고 열전도관(11)의 내부에는 마주보는 위치에 U자형으로 순환하는 열매체관(12)을 설치하며, 열전도관(11)의 내부에는 상기 열매체관(12)을 감싸는 형태로 C자형의 전도체(13)를 설치하였다.Looking at the vacuum tube heat collecting device of the present invention, the heat conduction tube (11) circulating in a U-shape at a position facing the inside of the heat conduction tube (11) constitutes a heat conduction tube (11) in a double vacuum tube (10) To install the inside of the heat conducting tube 11 was installed a C-shaped conductor 13 in the form of wrapping the heat medium tube (12).

상기 전도체(13)는 바이메탈 형식으로 내면부와 외면부에 열팽창계수가 다른 재질을 접합하여 내면층(13-1)과 외면층(13-2)을 구성함으로써 온도에 따라 열매체관(12)을 감싸는 정도가 달라지도록 하며, 내면층(13-1)과 외면층(13-2) 모두 열전도율이 높은 금속재질을 선택한다. The conductor 13 is formed of an inner surface layer 13-1 and an outer surface layer 13-2 by bonding a material having a different thermal expansion coefficient to the inner surface portion and the outer surface portion in a bimetal form to form the heat medium tube 12 according to temperature. The degree of encapsulation varies, and both the inner layer 13-1 and the outer layer 13-2 select a metal material having high thermal conductivity.

상기 전도체(13)의 변형되는 상태로는 내면층(13-1)이 외면층(13-2)보다 열팽창계수가 높은 재질로 구성하여 온도가 높은 여름철의 경우에는 열매체관(12)과 이격되면서 전도체(13)가 벌어지고 온도가 낮은 겨울철의 경우에는 전도체(13)가 열매체관(12)을 완전히 감싸도록 구성함을 특징으로 하는 것이다.In the deformed state of the conductor 13, the inner layer 13-1 is formed of a material having a higher coefficient of thermal expansion than the outer layer 13-2, and is spaced apart from the heat medium tube 12 in the summer when the temperature is high. In the winter when the conductor 13 is opened and the temperature is low, the conductor 13 is characterized in that it is configured to completely surround the heat medium tube 12.

상기 전도체(13)는 열전도관(11)의 내부에 용접하여 일체화시킬 수도 있고, 또는 도 7의 실시 예에 의하면 열전도관(11)의 내부에 길이방향으로 삽입홈(11')을 마련하고 전도체(13)에는 삽입홈(11')에 맞게 삽입되는 삽입부(13')를 마련하여 조립시 삽입홈(11')에 삽입부(13')를 끼워 넣도록 구성하면, 조립이 간편하고 전도체(13)의 교체도 용이하게 되는 효과가 있다. The conductor 13 may be integrally welded to the inside of the heat conduction tube 11, or according to the embodiment of FIG. 7, an insertion groove 11 ′ is provided in the longitudinal direction of the heat conduction tube 11 and a conductor is formed. (13) If the insertion portion (13 ') is provided to be fitted in accordance with the insertion groove (11') is configured to insert the insertion portion (13 ') in the insertion groove (11') during assembly, the assembly is easy and the conductor There is an effect that replacement of (13) is also easy.

또한 도 8의 실시 예에 의하면 열매체관(12)과 전도체(13a)의 사이에 열팽창률이 높은 팽창편(13b)를 삽입고정하여 주는 실시 예를 나타낸 것인데, 이러한 실시 예의 경우 고온이 될수록 팽창편(13b)이 팽창하면서 전도체(13a)를 열매체관(12)으로부터 이격시키도록 하는 것이다. In addition, according to the embodiment of FIG. 8, an embodiment in which the expansion piece 13b having a high thermal expansion rate is inserted and fixed between the heat medium tube 12 and the conductor 13a is shown. As the 13b expands, the conductor 13a is spaced apart from the heat medium tube 12.

도면 중 미설명된 부호 20은 반사판이다.
Reference numeral 20 in the drawings is a reflector.

이러한 구성으로 된 본 발명의 작용을 살펴보면, 일반적으로 열매유가 열매체관(12)을 순환하면서 태양열에 의해 가열이 되고 가열된 열매는 물과 열교환하여 물을 난방이나 온수용 등으로 사용하게 된다.Looking at the operation of the present invention having such a configuration, in general, the fruit oil is heated by solar heat while circulating the heat medium tube 12 and the heated fruit is used to heat the water for heating or hot water by heat exchange with water.

특히 본 발명에 의하면 열매가 열매체관(12)을 통과하면서 열전도관(11)과 전도체(13)의 영향을 받으면서 가열되는 정도가 달라지는데, 여름철에 진공관의 내부가 갖는 통상의 온도인 150℃ 이상에서는 전도체가 도 3 및 도 4와 같이 벌어지므로 열이 전도되는 정도가 매우 미약하게 된다. 따라서 열매가 과도하게 열을 흡수하는 것이 차단되고 열 흡수가 최소화되는 것이다. In particular, according to the present invention, the degree of heating of the fruit under the influence of the heat conducting tube 11 and the conductor 13 while passing through the heat medium tube 12 is different, but at a temperature of 150 ° C. or higher, which is the normal temperature of the inside of the vacuum tube in summer, Since the conductors are opened as shown in FIGS. 3 and 4, the degree of conduction of heat is very weak. Therefore, the fruit is blocked from absorbing excessive heat and heat absorption is minimized.

또한 반대로 겨울철에 이중진공관(10)의 통상 내부온도가 100℃ 정도이므로 이러한 온도에 따라 전도체(13)는 열매체관(12)을 완전히 감싸게 되므로 최대한의 열전도가 이루어지는 것이다.On the contrary, since the normal internal temperature of the double vacuum tube 10 is about 100 ° C. in winter, the conductor 13 completely surrounds the heat medium tube 12 according to the temperature, so that the maximum thermal conductivity is achieved.

이러한 작용에 의해 여름철에 과도한 열매가열이 방지되는 것이고 또한 겨울철에는 충분한 집열이 가능하게 되므로 태양열 집열을 효율적으로 하면서 집열장치의 유지관리도 효과적으로 하게 되는 것이다.By this action, excessive heating of the fruit is prevented in the summer and sufficient heat is collected in the winter, so that the solar heat collection can be efficiently performed and the maintenance of the heat collecting device is also effective.

10: 진공관
11: 열전도관
12: 열매체관
13: 전도체10: vacuum tube
11: heat conduction tube
12: heat pipe
13: conductor

Claims (4)

이중으로 된 진공관(10)의 내부에 열전도관(11)을 구성하고 열전도관(11)의 내부에는 U자형으로 순환하는 열매체관(12)을 설치하며,
열전도관(11)의 내부에는 상기 열매체관(12)을 감싸는 형태로 C자형의 전도체를 설치하며,
전도체는 바이메탈 또는 열에 의해 팽창하는 재질에 의해 온도가 높을수록 열매체관과의 사이가 벌어지고 온도가 낮을수록 열매체관에 밀착되도록 구성함을 특징으로 하는 이중진공관형 태양열 집열장치의 온도 과승 방지구조A heat conduction tube 11 is formed inside the double vacuum tube 10, and a heat medium tube 12 circulating in a U shape is installed inside the heat conduction tube 11,
Inside the heat conductive pipe 11 is installed a C-shaped conductor in the form of wrapping the heat medium pipe 12,
The conductor is made of bimetal or heat-expanded material, so that the temperature increases with the heat medium tube as the temperature increases, and the temperature becomes lower and close to the heat medium tube. 제1항에 있어서,
상기 전도체(13)는 바이메탈 형식으로 내면부와 외면부에 열팽창계수가 다른 재질을 접합하여 내면층(13-1)과 외면층(13-2)을 구성함으로써 온도에 따라 열매체관(12)을 감싸는 정도가 달라지도록 하며,
내면층(13-1)이 외면층(13-2)보다 열팽창계수가 높은 재질로 구성함을 특징으로 하는 이중진공관형 태양열 집열장치의 온도 과승 방지구조.The method of claim 1,
The conductor 13 is formed of an inner surface layer 13-1 and an outer surface layer 13-2 by bonding a material having a different thermal expansion coefficient to the inner surface portion and the outer surface portion in a bimetal form to form the heat medium tube 12 according to temperature. The degree of wrapping is different,
The inner vacuum layer 13-1 is composed of a material having a higher coefficient of thermal expansion than the outer layer (13-2). 제1항에 있어서,
열매체관(12)과 전도체(13a)의 사이에 열팽창률이 높은 팽창편(13b)를 삽입고정하여 고온이 될수록 팽창편(13b)이 팽창하면서 전도체(13a)를 열매체관(12)으로부터 이격시키도록 구성함을 특징으로 하는 이중진공관형 태양열 집열장치의 온도 과승 방지구조.The method of claim 1,
An expansion piece 13b having a high thermal expansion rate is inserted between the heat medium tube 12 and the conductor 13a, and the conductor 13a is spaced apart from the heat medium tube 12 while the expansion piece 13b expands as the temperature increases. The temperature rise prevention structure of the double vacuum tube solar heat collector, characterized in that the configuration. 제1항 내지 제3항 중 어느 한 항에 있어서,
열전도관(11)의 내부에 길이방향으로 삽입홈(11')을 마련하고 전도체(13)에는 삽입홈(11')에 맞게 삽입되는 삽입부(13')를 마련하여 조립시 삽입홈(11')에 삽입부(13')를 끼워 넣도록 구성함을 특징으로 하는 이중진공관형 태양열 집열장치의 온도 과승 방지구조.4. The method according to any one of claims 1 to 3,
The insertion groove 11 'is provided in the longitudinal direction inside the heat conduction pipe 11, and the insertion portion 11' is inserted into the conductor 13 so as to fit into the insertion groove 11 '. A double vacuum tube type solar heat collecting device, characterized in that it is configured to insert the insertion portion (13 ') into').
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CN103225890A (en) * 2013-04-22 2013-07-31 徐秀萍 Boosted pressure-reduced air-drying protecting full-glass vacuum heat-pipe solar collector device
CN103225921A (en) * 2013-04-22 2013-07-31 海宁伊满阁太阳能科技有限公司 Embedded boosting straight cylinder vacuum heat collection pipe element pressure reduction stagnation protector
CN103225894A (en) * 2013-04-22 2013-07-31 海宁伊满阁太阳能科技有限公司 Pressure reducing air sunning protecting all-glass vacuum heat pipe heat collection component
CN103225891A (en) * 2013-04-22 2013-07-31 林根弟 Boosted pressure-reduced air-drying protecting fin-plate heat-pipe vacuum solar collector device
CN103225915A (en) * 2013-04-22 2013-07-31 徐秀萍 Working medium high-position gathering pressure-reduction heat collection device for protecting all-glass vacuum heat pipe from stagnation
CN108061387A (en) * 2018-01-23 2018-05-22 北京民利储能技术有限公司 A kind of duplex tube type solar thermal collector with anti-overheating protection
CN109654744A (en) * 2018-08-25 2019-04-19 玉溪市兴红太阳能设备有限公司 Pressure type vacuum tube solar water heater

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN103225890A (en) * 2013-04-22 2013-07-31 徐秀萍 Boosted pressure-reduced air-drying protecting full-glass vacuum heat-pipe solar collector device
CN103225921A (en) * 2013-04-22 2013-07-31 海宁伊满阁太阳能科技有限公司 Embedded boosting straight cylinder vacuum heat collection pipe element pressure reduction stagnation protector
CN103225894A (en) * 2013-04-22 2013-07-31 海宁伊满阁太阳能科技有限公司 Pressure reducing air sunning protecting all-glass vacuum heat pipe heat collection component
CN103225891A (en) * 2013-04-22 2013-07-31 林根弟 Boosted pressure-reduced air-drying protecting fin-plate heat-pipe vacuum solar collector device
CN103225915A (en) * 2013-04-22 2013-07-31 徐秀萍 Working medium high-position gathering pressure-reduction heat collection device for protecting all-glass vacuum heat pipe from stagnation
CN103225891B (en) * 2013-04-22 2016-03-09 林根弟 Boosting decompression empty sun protection wing plate heat pipe vacuous solar energy heat collector
CN103225890B (en) * 2013-04-22 2016-03-30 徐秀萍 Boosting decompression empty sun protection all-glass vacuum hot pipe solar heat collector
CN108061387A (en) * 2018-01-23 2018-05-22 北京民利储能技术有限公司 A kind of duplex tube type solar thermal collector with anti-overheating protection
CN109654744A (en) * 2018-08-25 2019-04-19 玉溪市兴红太阳能设备有限公司 Pressure type vacuum tube solar water heater

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