JPS6034084A - Thermoelectric element module - Google Patents
Thermoelectric element moduleInfo
- Publication number
- JPS6034084A JPS6034084A JP58142433A JP14243383A JPS6034084A JP S6034084 A JPS6034084 A JP S6034084A JP 58142433 A JP58142433 A JP 58142433A JP 14243383 A JP14243383 A JP 14243383A JP S6034084 A JPS6034084 A JP S6034084A
- Authority
- JP
- Japan
- Prior art keywords
- thermoelectric element
- heat
- temperature
- plate
- heat source
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
木兄ｒ！Ａけ熱電素子モジュール、特に例えば燃焼排ガ
ス等の熱ガス顕熱あるいは高温物体、例えば転炉、連鋳
片等からの輻射熱を熱源とした熱電発電に用いる熱電素
子モジュールに関するものである。[Detailed description of the invention] (Industrial application field) Ki-ni r! The present invention relates to a thermoelectric element module, particularly a thermoelectric element module used for thermoelectric power generation using sensible heat of a hot gas such as combustion exhaust gas or radiant heat from a high-temperature object such as a converter, a continuous cast slab, etc. as a heat source.
（従来技術）
熱電素子を劣悪な使用環境から保護して劣化を防ぎ、ま
た、熱源の変動に対して安定な発電出力を得ることは、
熱電発電の実用上重要である。(Prior art) It is important to protect thermoelectric elements from harsh usage environments to prevent deterioration and to obtain stable power generation output against fluctuations in heat sources.
It is important in practical terms for thermoelectric power generation.
第１図は従来高温物体の輻射熱あるいは熱ガスの顕熱を
熱源とした熱電発電に用いられている熱電素子モジュー
ルの構造を示すもので、Ｐ型熱電素子４とＮ型熱電素子
５を高温接合部電極６と低温接合部電極３とで複数個電
気的に接続し、これらの低温接合部電極３の背面を玲却
水８の貫流ダクト１の外表面に薄い絶縁性接着剤の膜２
によって接着固定し、熱電素子の間の空間を断熱材７で
埋めた構造を有している。この熱電素子モジュールは、
非常に簡単な構造であシ、熱源９の熱が直接高温接合部
の電極金属６に伝わるようにして、熱電素子以外の熱抵
抗を極力小さくするようにしたものである。しかし々か
ら、この従来の熱電素子モジュールには以下に列挙する
問題点がある。Figure 1 shows the structure of a thermoelectric element module conventionally used for thermoelectric power generation using the radiant heat of a high-temperature object or the sensible heat of hot gas as a heat source. A plurality of lower temperature junction electrodes 6 and low temperature junction electrodes 3 are electrically connected, and the back surfaces of these low temperature junction electrodes 3 are coated with a thin insulating adhesive film 2 on the outer surface of the through-flow duct 1 of the cooling water 8.
It has a structure in which the thermoelectric elements are fixed with adhesive and the space between the thermoelectric elements is filled with a heat insulating material 7. This thermoelectric element module is
It has a very simple structure, and the heat from the heat source 9 is directly transmitted to the electrode metal 6 of the high-temperature junction, so that the thermal resistance of components other than the thermoelectric element is minimized. However, this conventional thermoelectric element module has the following problems.
■熱源９の流度が変動した場合、その影響が直ちに熱電
素子４又は５に伝わシ発電出カが変動するので発電出力
が安定しない。(2) If the flow rate of the heat source 9 fluctuates, the effect is immediately transmitted to the thermoelectric element 4 or 5, causing the power output to fluctuate, making the power generation output unstable.
■断熱材７の熱源９に対向した表面は熱を受けて温度が
上昇する。この熱の一部は断熱材を貫流し、一部は熱電
素子の側面から素子に入って低温接合部へ流出し、共に
熱損失となシ、発電効率を低下させる。(2) The surface of the heat insulating material 7 facing the heat source 9 receives heat and its temperature rises. Some of this heat flows through the insulation, and some of it enters the thermoelectric element through the sides and flows out to the cold junction, both resulting in heat loss and reducing power generation efficiency.
■断熱材７の熱源９に対向した表面の温度が熱電素子の
最高使用温度以上に上昇する危険性がある。(2) There is a risk that the temperature of the surface of the heat insulating material 7 facing the heat source 9 may rise above the maximum operating temperature of the thermoelectric element.
■熱源が燃焼排ガスのような場合には一般にＳＯｘ、Ｎ
Ｏｘ、水蒸気など熱電素子にとってあ捷シ好ましくない
成分を含んでおシ、又塵等も含まれており、電極金属と
断熱材だけで保護された熱電素子は劣化しやすい。■When the heat source is combustion exhaust gas, SOx, N
It contains undesirable components for thermoelectric elements such as Ox and water vapor, and also contains dust and other substances, and thermoelectric elements protected only by electrode metal and heat insulating material are susceptible to deterioration.
（発明の目的）
本発明は前記した問題点を解消し、高温物体の輻射熱あ
るいは熱ガスの顕熱から安定して発電をすることのでき
る熱電素子モジュールを提供することを目的とする。(Object of the Invention) An object of the present invention is to solve the above-mentioned problems and provide a thermoelectric element module that can stably generate electricity from the radiant heat of a high-temperature object or the sensible heat of hot gas.
（発明の構成・作用） 本発明の要旨とするところは以下のとおりである。(Structure and operation of the invention) The gist of the present invention is as follows.
（１）熱ガスの顕熱あるいは高温物体の輻射熱を熱源と
する熱電発電に用いる熱電素子モジュールにおいて、熱
電素子の受熱面に熱の良導体からなるプレートを密着接
合したことを特徴とする熱電素子モジュール。(1) A thermoelectric element module used for thermoelectric power generation using sensible heat of hot gas or radiant heat of a high-temperature object as a heat source, characterized in that a plate made of a good thermal conductor is closely bonded to the heat receiving surface of the thermoelectric element. .
（２）熱ガスの顕熱あるいは高温物体の輻射熱を熱源と
する熱電発電に用いる熱電素子モジュールにおいて、熱
電素子の受熱面に熱の良導体からなるプレートを密着接
合し、かつ該プレートの表面に高放射率の塗膜層を施し
てなることを特徴とする熱電素子モジュール。(2) In a thermoelectric element module used for thermoelectric power generation using the sensible heat of hot gas or the radiant heat of a high-temperature object as a heat source, a plate made of a good thermal conductor is closely bonded to the heat receiving surface of the thermoelectric element, and the surface of the plate is A thermoelectric element module characterized by being coated with an emissivity coating layer.
本発明に従った熱電素子モジュールの構造全第２図に基
づいて説明する。第１図に示した従来の熱電素子モジュ
ールは、高温接合部の電極６が露出した構造であるが、
第２図に示した熱電素子モジュールの構造ば、高温接合
部の電極６の表面上に、薄膜状の接着剤１０を介して、
銅、アルミニウム等の金属あるいはべりリア、炭化硅素
等からなる熱伝導度の大きなプレート１１が密着接合さ
れている。薄膜状の接着剤ｌｏはプレート１１が金属の
場合は電気絶縁性をもたせる。The entire structure of the thermoelectric element module according to the present invention will be explained based on FIG. 2. The conventional thermoelectric element module shown in FIG. 1 has a structure in which the electrode 6 of the high-temperature junction is exposed.
In the structure of the thermoelectric element module shown in FIG.
A plate 11 having a high thermal conductivity and made of metal such as copper or aluminum, Berria, silicon carbide, etc. is closely bonded. The thin film adhesive lo provides electrical insulation when the plate 11 is made of metal.
熱源９の温度が上昇した場合、それによって増えた受熱
量はまずプレート１１で受け取られる。When the temperature of the heat source 9 increases, the increased amount of heat received is first received by the plate 11.
プレート１１の厚みが適当であれば、受熱量の増分はプ
レート１１の温度上昇となって緩やかに吸収され熱電素
子４．ｊＫ大きな温度上昇を引き起さない・即ち、プレ
ート１１が蓄熱器として作用する・逆に熱源９の温度が
降下した場合もプレート１１が緩衝体となって熱電素子
４，５の温度降下全綴やかなものとする。If the thickness of the plate 11 is appropriate, the increase in the amount of heat received will cause a temperature rise in the plate 11 and be absorbed slowly, and the thermoelectric element 4. jK does not cause a large temperature rise. In other words, the plate 11 acts as a heat storage device. Conversely, even if the temperature of the heat source 9 drops, the plate 11 acts as a buffer and prevents the temperature drop of the thermoelectric elements 4 and 5. Make it simple.
プレート１１の厚みはその材質によって若干具なるが、
はぼ熱電素子の厚みの５〜１０倍が適当である。プレー
）１１の厚みがこの範囲よシ厚くなると熱電素子の高温
接合部と低温接合部の温度差を小さくする影響が現われ
、一方前記の範囲よシ薄くなると熱源の温度変動に対す
る発電出力の変動を大きくするので好ましくない。The thickness of the plate 11 varies slightly depending on its material, but
A suitable thickness is 5 to 10 times the thickness of the thermoelectric element. If the thickness of 11 becomes thicker than this range, it will have the effect of reducing the temperature difference between the high-temperature junction and the low-temperature junction of the thermoelectric element, while if it becomes thinner than the above range, it will reduce fluctuations in the power output due to temperature fluctuations of the heat source. I don't like it because it makes it bigger.
又、プレート１１は断熱材７０表面も覆っているので、
従来の構造の熱電素子モジュールでは熱損失となってｂ
た断熱材７の部分で受熱していた熱が本発明の熱電素子
モジュールではプレート１１で受熱され、熱の良導体で
あるプレート１１を伝わって熱電素子の高温接合部６１
Ｃ供給され、発電に使われる。したがって発電効率が改
善される。また、断熱材７の表面が受熱する熱量も極め
て小さくなシ、断熱材７の表面が過熱することもなくな
シ、そのため熱電素子の劣化あるいは破壊が防止される
。In addition, since the plate 11 also covers the surface of the heat insulating material 70,
In a thermoelectric element module with a conventional structure, heat loss occurs b.
In the thermoelectric element module of the present invention, the heat received by the heat insulating material 7 is received by the plate 11, and is transmitted through the plate 11, which is a good conductor of heat, to the high-temperature joint 61 of the thermoelectric element.
C is supplied and used for power generation. Therefore, power generation efficiency is improved. Further, the amount of heat received by the surface of the heat insulating material 7 is extremely small, and the surface of the heat insulating material 7 does not become overheated, thereby preventing deterioration or destruction of the thermoelectric element.
熱源が熱ガスである場合に従来の構造では熱ガス中の成
分や塵による熱電素子の劣化が問題であったが、本発明
の熱電素子モジュールでは熱ガスと接触する表面はグレ
ートで一体的に覆われているので、熱電素子は熱ガスあ
るいは有害金属を含む塵から遮断され、熱電素子の劣化
が防止される。When the heat source is hot gas, in the conventional structure, there was a problem of deterioration of the thermoelectric element due to components and dust in the hot gas, but in the thermoelectric element module of the present invention, the surface that comes into contact with the hot gas is integrated with a grate. Because it is covered, the thermoelectric element is shielded from hot gases or dust containing harmful metals, thereby preventing deterioration of the thermoelectric element.
さらに本発明に従って、前記プレートの表面に高放射率
の塗膜層を設け、之によって伝熱の促進をはかるのが、
よシ合目的的である。Further, according to the present invention, a coating layer with high emissivity is provided on the surface of the plate, thereby promoting heat transfer.
It is very purposeful.
高放射率の塗膜層を施こすための塗料としては例えはＭ
ＡＸ・ＰＬＡＮＫ及びハイパワー（日本化学エンジニア
リング■製）、あるいはテラゾール（日東工業■製の商
品名で市販されている黒鉛、炭化珪素、アルミナ、窒化
珪素、高分子化合物等を主成分とする高放射率の皮膜材
用塗料を用いる。この塗料をプレート表面に一定の厚み
で吹付け、焼付けることによって高放射率を有する塗膜
層を施すことができる。この塗膜層は放射熱や周辺の高
温雰囲気に対し耐え、酸性スラグ、金属性酸化物等の侵
食性物質に対しての抵抗性も優れているので好ましいゎ
このようにプレート上に高放射率でかつ耐熱性、耐侵食
性の塗膜層を設けることによって、伝熱の促進がはから
れうると共に熱電素子モジュールをより確実に苛酷な雰
囲気から保護することができる０
（実施例）
第２図において、熱電素子４，５としてカルコゲン化合
物からなる４ｍ！１Ｘ４麿Ｘ１ａｌｌのＮ型、Ｐ型素子
を用い、電極３，６として厚み１藺の銅板を、用い、断
熱材７としてはエポキシ系樹脂を充填し、銅製の冷却水
ダタト１の上に接着剤２として） ５ｉＯ２−Ａｔ２０
３系の無機接着剤を用いて熱電素子群を接着した。そし
て、高温接合部の電極６の上に、プレート１１として厚
み５間の銅板を、同様にＳ １０２−Ａｔ２０３系の無
機接着剤で接合した。For example, M is a paint for applying a high emissivity coating layer.
High radiation products whose main ingredients are graphite, silicon carbide, alumina, silicon nitride, and polymer compounds, which are commercially available under the trade names of AX/PLANK and High Power (manufactured by Nippon Kagaku Engineering Corporation) or Terrasol (manufactured by Nitto Kogyo Corporation). A coating material with a high emissivity is used.By spraying this coating onto the plate surface at a certain thickness and baking it, a coating layer with a high emissivity can be applied.This coating layer is protected against radiant heat and the surrounding environment. It is desirable because it can withstand high-temperature atmospheres and has excellent resistance to corrosive substances such as acidic slag and metal oxides.In this way, a coating film with high emissivity, heat resistance, and corrosion resistance is coated on the plate. By providing a layer, heat transfer can be promoted and the thermoelectric element module can be more reliably protected from a harsh atmosphere (Example) In FIG. The electrodes 3 and 6 are made of copper plates with a thickness of 1 inch, and the heat insulating material 7 is filled with epoxy resin. as adhesive 2 on top) 5iO2-At20
The thermoelectric element group was bonded using 3 types of inorganic adhesive. Then, a copper plate having a thickness of 5 mm was bonded as a plate 11 onto the electrode 6 of the high-temperature bonding portion using an S102-At203-based inorganic adhesive.
との熱電素子モジュールとプレート１１を有しない従来
構造の熱電素子モジュールとを排ガスの平均温度が約５
００℃である小型燃焼炉の煙道壁に取シ付けて、人為的
に排ガスの温度に変化を与え、２つの熱電素子モジュー
ルの発電出力を調べた。寸た熱電素子の劣化状態を発電
出方の減退として調べだ。この試験結果を第３図、第４
図に示す。第３図より本発明の熱電素子モジュールは従
来の熱電素子モジュールに比較して著しく安定した出力
になっていることが明らかである。また、第４図よシ従
来のモジュールが約２ケ月で発電出力が約１５％低下し
熱電素子の劣化を示唆しているが、本発明のモジュール
はほとんど発電出力の低下がみられなか−）だ。この試
験結果より熱電素子の表面に設けた良熱伝導性のプレー
トの効果が実証された。The average temperature of the exhaust gas is about 5.
The power generation output of the two thermoelectric element modules was investigated by attaching them to the flue wall of a small combustion furnace at 00°C and artificially changing the temperature of the exhaust gas. The deterioration of the thermoelectric elements is being investigated as a decline in power generation. The test results are shown in Figures 3 and 4.
As shown in the figure. It is clear from FIG. 3 that the thermoelectric element module of the present invention has a significantly more stable output than the conventional thermoelectric element module. In addition, as shown in Figure 4, the power generation output of the conventional module decreased by about 15% in about two months, suggesting deterioration of the thermoelectric element, but the module of the present invention showed almost no decrease in power generation output. is. This test result demonstrated the effectiveness of the plate with good thermal conductivity provided on the surface of the thermoelectric element.
（発明の効果）
前記したように、本発明によれば高温物体の輻射熱ある
いは熱ガスを熱源とする熱電発電において、劣悪な雰囲
気においても使用が可能であ）がつ温度の変動する熱源
に対しても安定な発電出力を得ることができる熱電素子
モジュールを提供しうる。(Effects of the Invention) As described above, according to the present invention, in thermoelectric power generation using the radiant heat of a high-temperature object or hot gas as a heat source, it is possible to use it even in a poor atmosphere. It is possible to provide a thermoelectric element module that can obtain stable power generation output even when
第１図は従来の熱電素子モジュールの断面構造を模式的
に示す説明図、第２図は本発明の熱電素子モジュールの
断面構造を模式的に示す説明図、第３図は本発明の熱電
素子モジュールと従来の熱電素子モジュールの場合の熱
源の変動と発電出力の変動を対比して示す図、第４図は
同じく発電出力の経時変化を示す図である。
１・・・冷却水の貫流ダクト、２・・・絶縁性接着剤、
３・・・低温接合部電極、４・・・Ｐ型熱電素子、５・
・・Ｎ型熱電素子、６・・・高温接合部電極、７・・・
断熱材、８・・・冷却水、９・・・熱源、ｌＯ・・・接
着剤、１１・・・熱良導体プレート
！１郵 緯會追Ｒ
弯液４シ禎３Fig. 1 is an explanatory diagram schematically showing the cross-sectional structure of a conventional thermoelectric element module, Fig. 2 is an explanatory diagram schematically showing the cross-sectional structure of the thermoelectric element module of the present invention, and Fig. 3 is an explanatory diagram schematically showing the cross-sectional structure of the thermoelectric element module of the present invention. FIG. 4 is a diagram showing a comparison of fluctuations in the heat source and fluctuations in power generation output in the case of a module and a conventional thermoelectric element module, and FIG. 4 is a diagram also showing changes in power generation output over time. 1... Cooling water flow duct, 2... Insulating adhesive,
3... Low temperature junction electrode, 4... P-type thermoelectric element, 5...
...N-type thermoelectric element, 6...High temperature junction electrode, 7...
Insulating material, 8...Cooling water, 9...Heat source, lO...Adhesive, 11...Good thermal conductor plate! 1 post
Claims (2)
する熱電発電に用いる熱電素子モジュールにお−て、熱
電素子の受熱面に熱の良導体からなるグレートを密着接
合したことを特徴とする熱電素子モジュール。(1) A thermoelectric element module used for thermoelectric power generation using sensible heat of hot gas or radiant heat of a high-temperature object as a heat source, characterized in that a grate made of a good thermal conductor is closely bonded to the heat receiving surface of the thermoelectric element. Thermoelectric module.
する熱電発電に用する熱電素子モジュールにお−て、熱
電素子の受熱面に熱の良導体からなるプレートを密着接
合し、かつ該プレートの表面に高放射率の塗膜層を施し
てなることを特徴とする熱電素子モジュール。(2) In a thermoelectric element module used for thermoelectric power generation using the sensible heat of hot gas or the radiant heat of a high-temperature object as a heat source, a plate made of a good thermal conductor is closely bonded to the heat receiving surface of the thermoelectric element, and the plate is A thermoelectric element module characterized by having a high emissivity coating layer applied to the surface of the thermoelectric element module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58142433A JPS6034084A (en) | 1983-08-05 | 1983-08-05 | Thermoelectric element module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58142433A JPS6034084A (en) | 1983-08-05 | 1983-08-05 | Thermoelectric element module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6034084A true JPS6034084A (en) | 1985-02-21 |
Family
ID=15315193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58142433A Pending JPS6034084A (en) | 1983-08-05 | 1983-08-05 | Thermoelectric element module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6034084A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032341A (en) * | 2006-07-31 | 2008-02-14 | Ihi Corp | Heat treatment device |
| KR20150053269A (en) | 2012-09-27 | 2015-05-15 | 제이에프이 스틸 가부시키가이샤 | Manufacturing facility line and thermoelectric power generation method |
| KR20150053270A (en) | 2012-09-27 | 2015-05-15 | 제이에프이 스틸 가부시키가이샤 | Manufacturing facility line and thermoelectric power generation method |
| JP2017119308A (en) * | 2014-09-08 | 2017-07-06 | Ｊｆｅスチール株式会社 | Manufacturing facility train of steel mill and thermoelectric power generation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4940690A (en) * | 1972-08-23 | 1974-04-16 | ||
| JPS5825927A (en) * | 1981-08-10 | 1983-02-16 | Mitsubishi Heavy Ind Ltd | Sheet forming method |
-
1983
- 1983-08-05 JP JP58142433A patent/JPS6034084A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4940690A (en) * | 1972-08-23 | 1974-04-16 | ||
| JPS5825927A (en) * | 1981-08-10 | 1983-02-16 | Mitsubishi Heavy Ind Ltd | Sheet forming method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032341A (en) * | 2006-07-31 | 2008-02-14 | Ihi Corp | Heat treatment device |
| KR20150053269A (en) | 2012-09-27 | 2015-05-15 | 제이에프이 스틸 가부시키가이샤 | Manufacturing facility line and thermoelectric power generation method |
| KR20150053270A (en) | 2012-09-27 | 2015-05-15 | 제이에프이 스틸 가부시키가이샤 | Manufacturing facility line and thermoelectric power generation method |
| JP2017119308A (en) * | 2014-09-08 | 2017-07-06 | Ｊｆｅスチール株式会社 | Manufacturing facility train of steel mill and thermoelectric power generation method |
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