JPH06341781A - Heat accumulator - Google Patents
Heat accumulatorInfo
- Publication number
- JPH06341781A JPH06341781A JP5149716A JP14971693A JPH06341781A JP H06341781 A JPH06341781 A JP H06341781A JP 5149716 A JP5149716 A JP 5149716A JP 14971693 A JP14971693 A JP 14971693A JP H06341781 A JPH06341781 A JP H06341781A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- metal
- heat transfer
- heat storage
- cover
- 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
- 238000005338 heat storage Methods 0.000 claims abstract description 23
- 239000006260 foam Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000011232 storage material Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims description 14
- 239000006262 metallic foam Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 239000011800 void material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蓄熱器に関する。更に
詳しくは、化学蓄熱材として固-気反応系物質の粉末を
充填して用いる蓄熱器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage device. More specifically, the present invention relates to a heat storage device which is used by being filled with powder of a solid-gas reaction system substance as a chemical heat storage material.
【０００２】[0002]
【従来の技術】アンモニア錯体、金属水素化物等の固-
気反応系物質の粉末が、化学蓄熱材として用いられてい
る。例えば、CaCl2・8NH3錯体粉末は、約80℃で次式で
右の方への反応を起こす： CaCl2・8NH3 ⇔ CaCl2・4NH3＋4NH3 このとき、CaCl2・4NH3中に約10Kcal/モルの熱量を蓄え
る。また、CaCl2・4NH3に4NH3を加えると、やはり約10K
cal/モルの熱量が得られる。このとき発生する熱の温度
は、クラジウス-クラペイロンの関係により決定され
る。2. Description of the Related Art Solid solutions of ammonia complexes, metal hydrides, etc.
A powder of a gas-reactive substance is used as a chemical heat storage material. For example, CaCl 2 · 8NH 3 complex powder causes a reaction to the right in the following formula at about 80 ° C: CaCl 2 · 8NH 3 ⇔ CaCl 2 · 4NH 3 + 4NH 3 At this time, in CaCl 2 · 4NH 3 Stores about 10 Kcal / mole of heat. Also, when 4NH 3 is added to CaCl 2 · 4NH 3 , it is still about 10K.
A calorie of cal / mol is obtained. The temperature of the heat generated at this time is determined by the Clausius-Clapeyron relationship.
【０００３】このような固-気反応系物質粉末が化学蓄
熱材として蓄熱器内に充填された場合、化学蓄熱材との
熱交換は面状伝熱体を介して行われるが、化学蓄熱材の
熱伝導率が低いため、熱交換速度が遅くなり、運転効率
の低下を招いている。When such a solid-gas reaction system substance powder is filled in the regenerator as a chemical heat storage material, heat exchange with the chemical heat storage material is carried out via the planar heat transfer material, but the chemical heat storage material is used. Has a low heat conductivity, the heat exchange rate becomes slow, resulting in a decrease in operation efficiency.
【０００４】そこで、従来は面状伝熱体に発泡アルミニ
ウム体等の発泡金属体を接触させ、この発泡金属体内に
化学蓄熱材を充填することにより、化学蓄熱材の低熱伝
導性を補っている。具体的には、図２の断面図に示され
るような状態の蓄熱器が用いられており、空隙９に充填
された化学蓄熱材の反応に関与する作動ガスの流通管１
を備えたふた体２と一般に約80〜100℃の水が用いられ
る熱媒体の導入路３および排出路４を有する流路５との
間に、ふた体２側に発泡金属体６が、また流路５側に面
状伝熱体７が位置するようにして挾着させた蓄熱器が用
いられている。Therefore, conventionally, a low thermal conductivity of the chemical heat storage material is supplemented by bringing a foam metal body such as a foam aluminum body into contact with the planar heat transfer body and filling the metal heat storage material with the chemical heat storage material. . Specifically, a heat storage device in a state as shown in the sectional view of FIG. 2 is used, and a working gas flow pipe 1 that participates in the reaction of the chemical heat storage material filled in the void 9
A metal foam body 6 on the lid body 2 side, and a flow path 5 having a heat medium introduction path 3 and a heat medium discharge path 4 in which water of generally about 80 to 100 ° C. is used. A heat storage device is used in which the planar heat transfer member 7 is positioned on the side of the flow path 5 so as to be sandwiched between them.
【０００５】しかしながら、このような構成をとる蓄熱
器では、発泡金属体と面状伝熱体との境界８に接触熱抵
抗が生ずるため、十分な運転効率の向上が達成されな
い。However, in the heat accumulator having such a structure, contact thermal resistance is generated at the boundary 8 between the metal foam body and the planar heat transfer body, so that sufficient improvement in operating efficiency cannot be achieved.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、化学
蓄熱材の反応に関与する作動ガスの流通管を備えたふた
体と熱媒体の導入路および排出路を有する流路との間
に、発泡金属体と面状伝熱体とを挾着させた蓄熱器にお
いて、運転効率を高めたものを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a space between a lid body provided with a flow pipe for a working gas involved in a reaction of a chemical heat storage material and a flow passage having a heat medium introduction passage and a discharge passage. The object of the present invention is to provide a heat accumulator in which a metal foam body and a sheet heat transfer body are sandwiched, and which has improved operation efficiency.
【０００７】[0007]
【課題を解決するための手段】かかる本発明の目的は、
上記構成の蓄熱器において、発泡金属体と面状伝熱体と
を一体成形して用いることによって達成される。図１
は、本発明に係る蓄熱器の断面を示し、そこでは発泡金
属体と面状伝熱体との一体成形による連続気泡の発泡伝
熱体10が用いられている。The object of the present invention is as follows.
In the heat accumulator having the above-mentioned configuration, it is achieved by integrally molding and using the metal foam body and the planar heat transfer body. Figure 1
Shows a cross section of a heat storage device according to the present invention, in which a foamed heat transfer body 10 having continuous cells formed by integrally molding a metal foam body and a planar heat transfer body is used.
【０００８】このような発泡金属体と面状伝熱体との一
体成形物は、次のような各工程を経て、発泡金属から成
形される。 (1)50%PVA水溶液とカーボン粉末との等重量混合物中
に、気孔率約70〜80%の発泡ポリウレタンスポンジを含
浸させる。 (2)これを3℃/分の昇温速度で600℃迄昇温させ、水の除
去およびPVAの炭化を行った後、還元性雰囲気中、2100
℃で焼結する。 (3)得られた発泡焼結体を溶融アルミニウム等の溶融金
属中に含浸させるが、その含浸位置は深さ方向の上部位
置とする。 (4)酸素雰囲気中、約600〜650℃に加熱してカーボンを
燃焼させ、気孔率約70〜80%、気孔の大きさ約1〜2mmの
発泡金属体部とその下部に気孔を有しない厚さ約1〜2mm
の面状伝熱体部とが一体に成形された発泡伝熱体が得ら
れる。An integrally molded product of such a foam metal body and a sheet-shaped heat transfer body is molded from the foam metal through the following steps. (1) A polyurethane foam sponge having a porosity of about 70 to 80% is impregnated in an equal weight mixture of a 50% PVA aqueous solution and carbon powder. (2) The temperature was raised to 600 ° C at a heating rate of 3 ° C / min, water was removed and PVA was carbonized, and then 2100 in a reducing atmosphere.
Sinter at ° C. (3) The obtained foamed sintered body is impregnated into a molten metal such as molten aluminum, but the impregnation position is the upper position in the depth direction. (4) In an oxygen atmosphere, carbon is burned by heating to about 600 to 650 ° C, and there is no porosity in the foam metal body part with a porosity of about 70 to 80% and a pore size of about 1 to 2 mm and its lower part. Thickness about 1-2 mm
It is possible to obtain a foamed heat transfer member integrally formed with the planar heat transfer member part.
【０００９】得られた発泡伝熱体10の発泡金属体部６´
側にはふた体２が、また面状伝熱体部７´側には流路５
が設けられることは、従来例の如くである。The foam metal body portion 6'of the obtained foam heat transfer body 10
The lid 2 is provided on the side, and the flow path 5 is provided on the side of the planar heat transfer member 7 '.
Is provided as in the conventional example.
【００１０】[0010]
【発明の効果】化学蓄熱材の低熱伝導性を補うために発
泡金属体を用いる場合に、発泡金属体と面状伝熱体とを
一体成形することにより、蓄熱器の効率の向上を図るこ
とができた。When a metal foam body is used to supplement the low thermal conductivity of the chemical heat storage material, the efficiency of the regenerator is improved by integrally molding the metal foam body and the planar heat transfer body. I was able to.
【００１１】[0011]
【実施例】次に、実施例について本発明を説明する。EXAMPLES The present invention will now be described with reference to examples.
【００１２】実施例 図１に示される全体が円筒形の蓄熱器(全体外径120mm、
流通管、導入路、排出路部分を除く全体の高さ14mm、発
泡伝熱体外径80mm、発泡伝熱体厚さ12mm、発泡金属体部
厚さ10mm、発泡金属体部空隙率90%)を用い、発泡金属体
部の空隙９に40gのCaCl2・8NH3錯体粉末を充填した。こ
の蓄熱器の作動ガス流通路をNH3ガス容器に連結し、熱
媒体として60℃の水を流したところ、CaCl2・8NH3錯体
粉末は吸熱反応を起こした。このときの吸熱反応所要時
間は約１時間であった。Embodiment A heat accumulator having an entirely cylindrical shape shown in FIG. 1 (total outer diameter 120 mm,
Overall height excluding distribution pipe, introduction path, discharge path part 14 mm, foam heat transfer body outer diameter 80 mm, foam heat transfer body thickness 12 mm, foam metal body part thickness 10 mm, foam metal body part void ratio 90%) Then, 40 g of CaCl 2 .8NH 3 complex powder was filled in the void 9 of the metal foam part. When the working gas flow passage of this heat accumulator was connected to an NH 3 gas container and water at 60 ° C. was passed as a heat medium, the CaCl 2 · 8NH 3 complex powder caused an endothermic reaction. The time required for the endothermic reaction at this time was about 1 hour.
【００１３】比較例 図２に示される全体が円筒形の蓄熱器(寸法は実施例と
同じ、ただし発泡金属体厚さ10mm、面状伝熱体厚さ2mm)
を用い、実施例と同様の吸熱反応を行わせたところ、反
応所要時間は約１時間40分であった。COMPARATIVE EXAMPLE The entire cylindrical heat accumulator shown in FIG. 2 (dimensions are the same as the embodiment, except that the thickness of the foam metal body is 10 mm and the thickness of the planar heat transfer body is 2 mm).
When an endothermic reaction similar to that in the example was carried out using, the time required for the reaction was about 1 hour and 40 minutes.
【図１】本発明に係る蓄熱器の断面図である。FIG. 1 is a sectional view of a heat storage device according to the present invention.
【図２】従来例の蓄熱器の断面図である。FIG. 2 is a sectional view of a conventional heat storage device.
１ 作動ガス流通管 ２ ふた体 ３ 熱媒体導入路 ４ 熱媒体排出路 ５ 熱媒体流路 ６ 発泡金属体 ６´発泡金属体部 ７ 面状伝熱体 ７´面状伝熱体部 ９ 空隙 10 発泡伝熱体 DESCRIPTION OF SYMBOLS 1 Working gas flow pipe 2 Lid body 3 Heat medium introduction path 4 Heat medium discharge path 5 Heat medium flow path 6 Metal foam body 6'Foam metal body section 7 Sheet heat transfer body 7'Sheet heat transfer section 9 Void 10 Foam heat transfer
Claims (1)
流通管を備えたふた体と熱媒体の導入路および排出路を
有する流路との間に、発泡金属体と面状伝熱体とを挾着
させた蓄熱器において、発泡金属体と面状伝熱体とを一
体成形したことを特徴とする蓄熱器。1. A metal foam body and a planar heat transfer body are provided between a lid body provided with a flow pipe for a working gas involved in a reaction of a chemical heat storage material and a flow path having an inlet passage and an outlet passage of a heat medium. A heat storage device in which a foam metal body and a planar heat transfer body are integrally molded in a heat storage device in which the and the heat storage device are attached to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5149716A JPH06341781A (en) | 1993-05-31 | 1993-05-31 | Heat accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5149716A JPH06341781A (en) | 1993-05-31 | 1993-05-31 | Heat accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06341781A true JPH06341781A (en) | 1994-12-13 |
Family
ID=15481266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5149716A Pending JPH06341781A (en) | 1993-05-31 | 1993-05-31 | Heat accumulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06341781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012024761A (en) * | 1997-07-03 | 2012-02-09 | Robert Bosch Gmbh | METHOD AND DEVICE FOR SELECTIVE CATALYTIC NOx REDUCTION |
| JP2015087082A (en) * | 2013-11-01 | 2015-05-07 | 株式会社豊田自動織機 | Chemical heat storage device |
-
1993
- 1993-05-31 JP JP5149716A patent/JPH06341781A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012024761A (en) * | 1997-07-03 | 2012-02-09 | Robert Bosch Gmbh | METHOD AND DEVICE FOR SELECTIVE CATALYTIC NOx REDUCTION |
| JP2015087082A (en) * | 2013-11-01 | 2015-05-07 | 株式会社豊田自動織機 | Chemical heat storage device |
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