JPS6030422B2 - Manufacturing method of vacuum tube type high temperature solar collector - Google Patents
Manufacturing method of vacuum tube type high temperature solar collectorInfo
- Publication number
- JPS6030422B2 JPS6030422B2 JP56067354A JP6735481A JPS6030422B2 JP S6030422 B2 JPS6030422 B2 JP S6030422B2 JP 56067354 A JP56067354 A JP 56067354A JP 6735481 A JP6735481 A JP 6735481A JP S6030422 B2 JPS6030422 B2 JP S6030422B2
- Authority
- JP
- Japan
- Prior art keywords
- sealed container
- type high
- vacuum tube
- tube type
- temperature solar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000006059 cover glass Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229910052987 metal hydride Inorganic materials 0.000 claims description 11
- 150000004681 metal hydrides Chemical class 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000002775 capsule Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- 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
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
-
- 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
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
- F24S40/46—Maintaining vacuum, e.g. by using getters
-
- 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
Landscapes
- 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)
Description
【発明の詳細な説明】
本発明は、簡便にして、空焚き防止が行なえる真空管式
高温太陽熱集熱器の製造方法を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manufacturing a vacuum tube type high-temperature solar heat collector that is simple and can prevent dry heating.
一般に、真空管式太陽熱集熱器においては、太陽光を効
率よく熱に変えるため、集熱器の設置時あるいはポンプ
の停止や故障による空焚き時には、集熱板は必要以上に
加熱されて夏場には３００℃以上の高温になる。In general, in vacuum tube type solar collectors, in order to efficiently convert sunlight into heat, the heat collector plates are heated more than necessary when the collector is installed or when the pump is stopped or malfunctions and the heating is idle. reaches a high temperature of over 300°C.
これにより集熱板は劣化し、ついには集熱器の特性を損
うことになる。したがって、できるだけ所定の温度以上
にしないような工夫が重要である。従釆、真空管式太陽
熱集熱器の空焚き防止の目的で、カバーガラス管の内部
に水素透過性のコンテナでできた可逆水素ゲツタ−を設
けて温度上昇に伴う放出水素による対流熱損失を利用し
た技術は公知である。This causes the heat collector plate to deteriorate and eventually impair the properties of the heat collector. Therefore, it is important to take measures to prevent the temperature from exceeding a predetermined temperature as much as possible. Additionally, in order to prevent vacuum tube solar collectors from running dry, a reversible hydrogen getter made of a hydrogen-permeable container is installed inside the cover glass tube to utilize convective heat loss due to hydrogen released as the temperature rises. This technique is publicly known.
しかしながら、これにおいては、活性な水素化物を使う
必要があるため、従釆のような方法では、製造時に水素
化物が水素を放出したり、あるいは酸化したりする不都
合があった。また、従来例ではカバー管で得られた熱を
ガラス壁を通して隣接したダクト内の伝熱媒体に伝達す
る構成となっており、この場合は、ハメ込み式という点
で利用価値が広く、優れたものであるが、カバーガラス
管内に伝熱パイプを設けたものに比較すれば、熱交換ロ
スが大きく、かつ冷房などの高温集熱を必要とする用途
には必ずしもよいとはいえない。本発明は上記従来技術
に鑑み、密封容器を設け、かつこれを真空排気したカバ
ーガラス管中で開封することを特徴とし、高温集熱を必
要とする用途に使われる真空管式太陽熱集熱器の製造方
法を提供するものである。However, since this requires the use of an active hydride, the conventional method has the disadvantage that the hydride releases hydrogen or oxidizes during production. In addition, in the conventional example, the heat obtained from the cover tube is transmitted through the glass wall to the heat transfer medium in the adjacent duct. However, compared to a case in which a heat transfer pipe is provided inside a cover glass tube, the heat exchange loss is large, and it is not necessarily suitable for applications that require high-temperature heat collection such as air conditioning. In view of the above-mentioned prior art, the present invention is characterized in that a sealed container is provided and the container is unsealed in an evacuated cover glass tube. A manufacturing method is provided.
以下、本発明の詳細について説明する。The details of the present invention will be explained below.
金属水素化物の水素吸蔵、放出現象を利用して空焚きを
防ぐ真空管式高温太陽熱集熱器において、まず、カバー
ガラス管の内部に、金属水素化物または水素吸蔵可能な
金属（または合金）と水素を内部に収納した密封容器を
設け、そして２５０ｑｏ以上で脱ガス処理した後、基本
的に真空にする。これを第１段階とする。次いで、この
密封容器を壊すのであるが、いかなる手段を用いてもよ
い。たとえば機械的な方法でも、また電磁誘導を用いる
方法でもよい。次に後者の場合について、本発明の詳細
を説明する。まず密封容器の少なくとも一部をガラス質
部分で構成する。一般的にはソーダガラスや鉛ガラスな
どの円筒形ガラスカプセル、または金属容器等の密封容
器にガラス管を融着したものが使用できる。されにこの
密封容器では封入物の飛散を防ぐために、電気抵抗の小
さな金属の凝結体からなるフィル夕を使用できる。上記
密封容器を開封する加熱素子としては、モリブデン，タ
ングステン，鉄クロムやニッケルクロムのような電気抵
抗の高い金属線がよい。また加熱素子と環状体を形成し
て上記カプセルを保持固定する金具としては、リン青銅
のような弾性を有し、かつ電気抵抗の小さなものか、も
しくは熱膨張率の異なる材質を貼りあわせたもので、熱
によって弾性を得られるものがよい。そしてまた密封容
器に封入される金属水素化物は、真空管式太陽熱集熱器
の特性を損わない目的から、一般的には一定温度以下に
おいて、水素解離圧が約１ ０‐３のｒｒ以下であり、
かつ所望上限温度で約１０‐２〜１０‐ｌｔｏｒｒ以上
のものが使用できる。以下、本発明の実施例について図
面にしたがって説明する。In a vacuum tube type high-temperature solar collector that prevents dry heating by utilizing the hydrogen absorption and release phenomena of metal hydrides, first, a metal hydride or a metal (or alloy) that can absorb hydrogen and hydrogen are placed inside a cover glass tube. A sealed container containing the material is provided, and after degassing at 250 qo or more, it is basically evacuated. This is the first step. Next, this sealed container is broken, and any means may be used. For example, a mechanical method or a method using electromagnetic induction may be used. Next, details of the present invention will be explained regarding the latter case. First, at least a portion of the sealed container is made of a glassy portion. Generally, a cylindrical glass capsule made of soda glass or lead glass, or a glass tube fused to a sealed container such as a metal container can be used. Furthermore, in order to prevent the contents from scattering in this sealed container, a filter made of metal aggregates with low electrical resistance can be used. As the heating element for opening the sealed container, a metal wire with high electrical resistance such as molybdenum, tungsten, iron chromium, or nickel chromium is preferable. The metal fittings that form an annular body with the heating element to hold and fix the capsule should be made of elastic material such as phosphor bronze and low electrical resistance, or made of materials laminated with different coefficients of thermal expansion. It is best to choose something that can be made elastic by heat. In addition, the metal hydride sealed in the sealed container generally has a hydrogen dissociation pressure of about 10-3 rr or less at a certain temperature or below, in order not to impair the characteristics of the vacuum tube solar collector. can be,
Moreover, at a desired upper temperature limit, a temperature of about 10-2 to 10-liter or more can be used. Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の真空管式高温太陽熱集熱器の一実施例
を示したもので、１は真空管式高温太陽熱集熱器のカバ
ーガラス管、２は太陽光線を熱に変換する集熱板、３は
熱媒体を通す銅パイプ、４は金属水素化物５を適量封入
したカプセルよりなる密封容器で、この密封容器４は電
気抵抗が小さく、かつ弾性を有する金具６によって銅パ
イプ３に保持固定されている。第２図は使用される密封
容器の一例を示したもので、この第２図においては、適
当な金属水素化物５を入れた電気抵抗の小さい金属製の
密封容器４に、熱により開封可能なガラス質部分７を融
着させ、かつ電気抵抗の小さい金属の鱗結体を用いたフ
ィル夕８を設けることによって、前記封入物、すなわち
金属水素化物の飛散を防いでいる。Figure 1 shows an embodiment of the vacuum tube type high temperature solar heat collector of the present invention, where 1 is a cover glass tube of the vacuum tube type high temperature solar heat collector, and 2 is a heat collection plate that converts sunlight into heat. , 3 is a copper pipe through which a heat medium passes, and 4 is a sealed container made of a capsule containing an appropriate amount of metal hydride 5. This sealed container 4 is held and fixed to the copper pipe 3 by a metal fitting 6 having low electrical resistance and elasticity. has been done. Fig. 2 shows an example of a sealed container used. In Fig. 2, a suitable metal hydride 5 is placed in a metal sealed container 4 with low electrical resistance, which can be opened by heat. By fusing the glassy portion 7 and providing a filter 8 made of metal scales with low electrical resistance, the inclusions, that is, the metal hydride, are prevented from scattering.
第３図は密封容器の開封方法の一例を示した図で、この
第３図においては、直径０．２側のモリブデン線からな
り、かつ電気的に閉回路を形成する加熱素子９の両端を
、弾性を有するリン青銅製の金属板１０に溶接して形成
した環状体の弾性力によって、密封容器４のガラス質部
分７を保持固定している。上誌構成において、第１図に
示すカバーガラス管１の外周を取り巻く一次コイル１１
に交流電流を流すと、環状体に誘導電流が生じ、かつ加
熱素子９にも電流が流れるのでカプセルよりなる密封容
器４のガラス質部分７は溶けて開封される。FIG. 3 shows an example of how to open a sealed container. In FIG. 3, both ends of a heating element 9 made of a molybdenum wire with a diameter of 0.2 and forming an electrically closed circuit are shown. The vitreous portion 7 of the sealed container 4 is held and fixed by the elastic force of the annular body welded to the elastic metal plate 10 made of phosphor bronze. In the above configuration, a primary coil 11 surrounding the outer periphery of the cover glass tube 1 shown in FIG.
When an alternating current is applied to the annular body, an induced current is generated in the annular body, and the current also flows through the heating element 9, so that the vitreous portion 7 of the sealed container 4 made of a capsule is melted and opened.
このとき、金属板１０の弾性によって加熱素子９は密封
容器のガラス質部分７に密着して、ガラス質部分７が溶
けたときにガラス質部分７内に〈し・込んで開封を可能
とする。上記密封容器４内に金属水素化物５として、Ｚ
ｒ−Ｍｎ合金を封入したものにおいては、１５０℃以下
の温度範囲では２×１０‐３ｔｏｍ以下の水素平衡圧と
なって減圧状態になるが、２００００以上では水素平衡
圧は約１×１０‐２ｔｏｎ以上となる。At this time, due to the elasticity of the metal plate 10, the heating element 9 comes into close contact with the vitreous part 7 of the sealed container, and when the vitreous part 7 melts, it sinks into the vitreous part 7, making it possible to open the container. . Z as a metal hydride 5 in the sealed container 4
In the case of an encapsulated r-Mn alloy, in the temperature range below 150°C, the hydrogen equilibrium pressure becomes 2 x 10-3 ton or less, resulting in a reduced pressure state, but in the temperature range above 20,000 °C, the hydrogen equilibrium pressure is about 1 x 10-2 ton. That's all.
以上のように本発明は、金属水素化物を内部に収納した
密封容器を、カバーガラス管内に設けて減圧密封した後
、前記密封容器の少なくとも一部を開封することを特徴
とするもので、これによって製造時に水素が放出したり
、あるいは金属水素化物が酸化するのを防止することが
できるものである。As described above, the present invention is characterized in that a sealed container containing a metal hydride is provided inside a cover glass tube and sealed under reduced pressure, and then at least a portion of the sealed container is opened. This can prevent hydrogen from being released during production or oxidation of metal hydrides.
第１図は本発明の一実施例を示す真空管式高温太陽熱集
熱器の概略断面図、第２図および第３図は第１図の要部
構成図である。
１・・・・・・カバーガラス管、２・・・・・・集熱板
、３…・・・パイプ、４・・・・・・密封容器、５・・
・…金属水素化物、６・・・・・・金具、７・・・・・
・ガラス質部分、９・・・・・・加熱素子、１０・・・
・・・金属板、１１・・・・・・一次コイル。
第１図第２図
第３図FIG. 1 is a schematic cross-sectional view of a vacuum tube type high-temperature solar heat collector showing an embodiment of the present invention, and FIGS. 2 and 3 are configuration diagrams of the main parts of FIG. 1. 1... Cover glass tube, 2... Heat collecting plate, 3... Pipe, 4... Sealed container, 5...
・...Metal hydride, 6...Metal fittings, 7...
- Glassy part, 9... Heating element, 10...
...Metal plate, 11...Primary coil. Figure 1 Figure 2 Figure 3
Claims (1)
を通すパイプと、前記集熱板を外周より熱的に絶縁する
カバーガラス管からなる真空管式高温太陽熱集熱器にお
いて、前記カバーガラス管の内部に、金属水素化物また
は水素吸蔵可能な金属（または合金）と水素を内部に収
納した密封容器を設け、減圧した後、前記密封容器の少
なくとも一部を開封し、前記カバーガラス管と導通させ
たことを特徴とする真空管式高温太陽熱集熱器の製造方
法。 ２ 前記密封容器の少なくとも一部がガラス質部分から
なることを特徴とする特許請求の範囲第１項記載の真空
管式高温太陽熱集熱器の製造方法。 ３ 前記密封容器は、電気的に閉回路を形成する加熱素
子と弾性を有する金具によつて保持固定され、かつ前記
カバーガラス管の外周をとりまく一次コイルの誘導電流
により、加熱素子に電流を流して前記密封容器を溶解す
ることを特徴とする特許請求の範囲第１項または第２項
記載の真空管式高温太陽熱集熱器の製造方法。[Claims] 1. A vacuum tube type high-temperature solar heat collector consisting of a heat collecting plate for converting sunlight into heat, a pipe for passing a heat medium, and a cover glass tube for thermally insulating the heat collecting plate from its outer periphery. In the container, a sealed container containing a metal hydride or a metal (or alloy) capable of storing hydrogen and hydrogen is provided inside the cover glass tube, and after the pressure is reduced, at least a portion of the sealed container is opened. A method for manufacturing a vacuum tube type high temperature solar heat collector, characterized in that the vacuum tube type high temperature solar collector is electrically connected to the cover glass tube. 2. The method for manufacturing a vacuum tube type high-temperature solar heat collector according to claim 1, wherein at least a portion of the sealed container is made of a glassy portion. 3. The sealed container is held and fixed by a heating element forming an electrically closed circuit and an elastic metal fitting, and a current is passed through the heating element by an induced current of a primary coil surrounding the outer periphery of the cover glass tube. 3. The method for manufacturing a vacuum tube type high-temperature solar heat collector according to claim 1 or 2, characterized in that the sealed container is melted by melting the sealed container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56067354A JPS6030422B2 (en) | 1981-05-02 | 1981-05-02 | Manufacturing method of vacuum tube type high temperature solar collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56067354A JPS6030422B2 (en) | 1981-05-02 | 1981-05-02 | Manufacturing method of vacuum tube type high temperature solar collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57182052A JPS57182052A (en) | 1982-11-09 |
| JPS6030422B2 true JPS6030422B2 (en) | 1985-07-16 |
Family
ID=13342590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56067354A Expired JPS6030422B2 (en) | 1981-05-02 | 1981-05-02 | Manufacturing method of vacuum tube type high temperature solar collector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6030422B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015509180A (en) * | 2012-02-03 | 2015-03-26 | サエス・ゲッターズ・エッセ・ピ・ア | Improvement of solar energy collector receiving tube |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040029919A (en) * | 2002-10-04 | 2004-04-08 | 에이스텍 주식회사 | Solar battery system |
| DE102005057276B3 (en) * | 2005-11-25 | 2007-07-12 | Schott Ag | Absorber tube for parabolic trough collector in solar thermal power plant, has gas-tight closed container filled with noble gas and arranged in space between center and cladding tubes, where gas is discharged from container into space |
-
1981
- 1981-05-02 JP JP56067354A patent/JPS6030422B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015509180A (en) * | 2012-02-03 | 2015-03-26 | サエス・ゲッターズ・エッセ・ピ・ア | Improvement of solar energy collector receiving tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57182052A (en) | 1982-11-09 |
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