JPH11264683A - Heat storage type heat exchanger - Google Patents
Heat storage type heat exchangerInfo
- Publication number
- JPH11264683A JPH11264683A JP10068456A JP6845698A JPH11264683A JP H11264683 A JPH11264683 A JP H11264683A JP 10068456 A JP10068456 A JP 10068456A JP 6845698 A JP6845698 A JP 6845698A JP H11264683 A JPH11264683 A JP H11264683A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- heat
- phase change
- temperature
- heat exchanger
- 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 title claims abstract description 66
- 239000012782 phase change material Substances 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 15
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 2
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 239000012071 phase Substances 0.000 description 25
- 241000264877 Hippospongia communis Species 0.000 description 22
- 230000001172 regenerating effect Effects 0.000 description 10
- 230000008018 melting Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 239000007791 liquid phase Substances 0.000 description 6
- 239000007790 solid phase Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
(57)【要約】
【課題】 蓄熱形熱交換器の蓄熱容量を増加するととも
に、一定加熱を実現する。
【解決手段】多数の流体流路を有するセラミックハニカ
ム２を流路３が上下方向を向くように配置し、各流路３
の１本おきに使用温度において固体と液体との間で相変
化する相変化物質４を充填した蓄熱１体を有してなる。
(57) [Summary] [PROBLEMS] To increase the heat storage capacity of a heat storage type heat exchanger and realize constant heating. A ceramic honeycomb having a plurality of fluid flow paths is arranged so that the flow paths face up and down.
And a heat storage unit filled with a phase change material 4 that changes phase between a solid and a liquid at a use temperature.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガスタービン用熱
交換器やボイラ、加熱炉の空気予熱器などとして使用さ
れる蓄熱形熱交換器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type heat exchanger used as a gas turbine heat exchanger, a boiler, an air preheater of a heating furnace, and the like.
【０００２】[0002]
【従来の技術】ガスタービン用熱交換器やボイラの空気
予熱器などとして、回転式蓄熱形熱交換器や切換式蓄熱
形熱交換器が広く用いられている。これらは（１）同容
量、同重量当たりで比較すると他の形式の熱交換器より
温度効率も高く、また、コンパクトであり、熱伝達面は
安価である、（２）流体の方向が周期的に変動するので
流れのよどみは少なく、伝熱面に自己清浄作用がある、
などの特色がある。2. Description of the Related Art A rotary heat storage type heat exchanger and a switching type heat storage type heat exchanger are widely used as heat exchangers for gas turbines and air preheaters for boilers. They have (1) higher temperature efficiency than other types of heat exchangers when compared for the same capacity and weight, and are compact and inexpensive in heat transfer surface. (2) Periodic fluid direction. The flow stagnation is small, and the heat transfer surface has a self-cleaning action.
There are features such as.
【０００３】蓄熱形熱交換器に使用される蓄熱体は、ハ
ニカム形や小球からなるペブル形が使用されている。ま
た、潜熱を利用した蓄熱体として図５に示すように、セ
ラミックのペブル中に溶融炭酸塩等の相変化物質を分散
含有させたものが報告されている（High-Temperature C
omposite Latent/Sensible Heat Storage,Instituteof
Gas Technology IIT Center,Chicago,Illinois 60616.1
982）。[0003] As a heat storage element used in a heat storage type heat exchanger, a honeycomb type or a pebble type formed of small balls is used. In addition, as shown in FIG. 5, as a heat storage body using latent heat, a material in which a phase change material such as a molten carbonate is dispersed and contained in a ceramic pebble has been reported (High-Temperature C).
omposite Latent / Sensible Heat Storage, Instituteof
Gas Technology IIT Center, Chicago, Illinois 60616.1
982).
【０００４】[0004]
【発明が解決しようとする課題】従来の方式では、ハニ
カムやペブル中を被加熱流体が流れると、蓄熱され熱く
なったハニカムやペブルの温度が時間と共に低下する。
このため、被加熱流体の加熱温度を一定に保つことはで
きない。また、単位体積当りの蓄熱量が小さいため、寸
法が大きくなってしまう。In the conventional method, when a fluid to be heated flows through a honeycomb or pebble, the temperature of the honeycomb or pebble that has been stored and heated becomes lower with time.
For this reason, the heating temperature of the fluid to be heated cannot be kept constant. In addition, since the heat storage amount per unit volume is small, the size becomes large.
【０００５】図５に示すような潜熱蓄熱セラミックペブ
ルは、蓄熱量の増加や加熱温度の一定化などが一応対応
可能であるが、製造することが困難でコストも高い。ま
た、相変化物質（塩）の含有量を大幅に増加することは
不可能であり、ペブルはハニカム程熱伝達も良好ではな
い。A latent heat storage ceramic pebble as shown in FIG. 5 can cope with an increase in the amount of heat storage and a constant heating temperature, but it is difficult to manufacture and the cost is high. Also, it is impossible to significantly increase the content of phase change material (salt), and Pebble does not transfer heat as well as honeycomb.
【０００６】本発明は、従来技術の以上述べた問題点に
鑑み案出されたもので、市販のセラミックハニカムを利
用して、製造が容易でコストも安く、かつ、単位体積当
りの蓄熱量が大きく、被加熱流体の加熱温度変化の少な
い蓄熱形熱交換器を提供することを目的とする。The present invention has been made in view of the above-mentioned problems of the prior art, and is easy to manufacture and low in cost using a commercially available ceramic honeycomb, and has a low heat storage amount per unit volume. An object of the present invention is to provide a heat storage type heat exchanger which is large and has a small change in the heating temperature of the fluid to be heated.
【０００７】[0007]
【問題を解決するための手段】上記目的を達成するた
め、本発明の蓄熱形熱交換器は、多数の流体流路を有す
るセラミックハニカムを流路が上下方向を向くように配
置し、各流路の１本おきに使用温度において固体と液体
との間で相変化する相変化物質を充填した蓄熱体を有し
てなるものである。In order to achieve the above object, a regenerative heat exchanger according to the present invention comprises a ceramic honeycomb having a large number of fluid passages, arranged so that the passages are directed vertically, and each of the honeycombs has a fluid passage. A heat storage element filled with a phase change material that changes phase between a solid and a liquid at a use temperature at every other path.
【０００８】相変化物質をハニカム流路の１列おきに充
填してもよいし、ハニカム流路に千鳥状に充填してもよ
い。また、相変化物質は、アルカリ金属の炭酸塩である
のが好ましい。The phase change material may be filled in every other row of the honeycomb channel, or may be staggered in the honeycomb channel. Also, the phase change material is preferably an alkali metal carbonate.
【０００９】次に本発明の作用を説明する。相変化物質
として、たとえば、高温溶融炭酸塩を市販のセラミック
ハニカムの流体流路の１本おきに充填して蓄熱体を形成
する。したがって、蓄熱体は流体流路と充填された流路
部分とが互に隣接し合っている。高温の加熱流体を蓄熱
体流路に流し、蓄熱体を加熱すると相変化物質は溶融
し、固相から液相に相変化する。相変化により大きな熱
エネルギが潜熱として蓄熱体内に蓄積される。Next, the operation of the present invention will be described. As a phase change material, for example, a high-temperature molten carbonate is filled in every other fluid channel of a commercially available ceramic honeycomb to form a heat storage body. Therefore, in the heat storage body, the fluid flow path and the filled flow path portion are adjacent to each other. When a high-temperature heating fluid is caused to flow through the regenerator passage and the regenerator is heated, the phase-change substance is melted and changes its phase from a solid phase to a liquid phase. Due to the phase change, large heat energy is stored in the heat storage as latent heat.
【００１０】次に蓄熱体内を流れる流体を切替て、被加
熱流体を流す。蓄熱体内に蓄積された熱エネルギは、被
加熱流体に伝達されて被加熱液体が昇温するとともに、
蓄熱体の温度は低下し、蓄熱体内に充填された液体の相
変化物質は凝固し、液相から固相に相変化する。この
際、相変化物質は潜熱を放出するが、相変化が行われて
いる間は、相変化物質の温度は、その物質固有の融点と
して一定温度を保つので、被加熱流体の出口温度を一定
に保つことができる。Next, the fluid flowing in the heat storage body is switched to flow the fluid to be heated. The heat energy stored in the heat storage medium is transmitted to the fluid to be heated and the temperature of the liquid to be heated rises.
The temperature of the heat accumulator decreases, and the liquid phase change material filled in the heat accumulator solidifies and undergoes a phase change from a liquid phase to a solid phase. At this time, the phase-change substance emits latent heat, but during the phase change, the temperature of the phase-change substance keeps a constant temperature as a melting point inherent to the substance, so that the outlet temperature of the fluid to be heated is kept constant. Can be kept.
【００１１】このように本発明の蓄熱形熱交換器は、
１）単位体積当りの蓄熱量が大きく全体がコンパクトに
できる、２）相変化温度（融点）を利用するため一定加
熱温度を実現することができる、３）ハニカムは水力直
径が小さく、高熱伝達が可能であり、伝熱面積が大き
い、４）相変化物質、充填するセル数とその配置などを
適宜選ぶことにより、大型化や多様な要求温度に対応す
るシステムの構築が可能である、５）相変化物質の体積
膨張があっても上部が自由表面なので、熱応力発生の問
題はない、などの特徴を有している。[0011] As described above, the regenerative heat exchanger of the present invention comprises:
1) The heat storage amount per unit volume is large and the whole can be made compact. 2) A constant heating temperature can be realized by using the phase change temperature (melting point). 3) The honeycomb has a small hydraulic diameter and high heat transfer. It is possible to have a large heat transfer area. 4) By appropriately selecting the phase change material, the number of cells to be filled, and the arrangement thereof, it is possible to build a system that can accommodate a large size and various required temperatures. Even when the phase-change substance expands in volume, the upper surface is a free surface, so that there is no problem of generation of thermal stress.
【００１２】[0012]
【発明の実施の形態】以下、本発明の１実施形態につい
て、図面を参照しつつ説明する。図１は、本発明の蓄熱
形熱交換器に使用される蓄熱体の図面であり、図１
（Ａ）は斜視図、図１（Ｂ）は図１（Ａ）のＡ−Ａ矢視
断面図である。図において、１は蓄熱体である。２はア
ルミナなどのセラミック製ハニカムで、セラミック壁２
ａにより多数の４角形の流路３を形成している。セラミ
ックハニカム２は、市販のものを使用するのが価格の点
で好ましい。セラミックハニカム２を流路３が上下方向
を向くように配置し、流路３の１本おきに使用温度にお
いて、固体と液体との間で相変化する相変化物質４を充
填する。充填のパターンは、図１に示すように１列おき
に充填する列毎充填でもよいし、縦横両方向に１本おき
に充填する千鳥充填でもよい。相変化物質４を充填する
ために、充填する流路３の下端にセラミック充填材５を
セラミック接着剤を使用して接着し、接着剤を乾燥して
固着する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a drawing of a heat storage body used in the heat storage type heat exchanger of the present invention.
1A is a perspective view, and FIG. 1B is a cross-sectional view taken along the line AA in FIG. 1A. In the figure, 1 is a heat storage body. Reference numeral 2 denotes a ceramic honeycomb made of alumina or the like.
a form a large number of rectangular channels 3. It is preferable to use a commercially available ceramic honeycomb 2 in terms of cost. The ceramic honeycombs 2 are arranged so that the flow paths 3 face up and down, and every other flow path 3 is filled with a phase change material 4 that changes phase between a solid and a liquid at a use temperature. As shown in FIG. 1, the filling pattern may be filling for every other row in which every other row is filled, or staggered filling in which every other row is filled in both the vertical and horizontal directions. In order to fill the phase change material 4, a ceramic filler 5 is bonded to the lower end of the flow path 3 to be filled using a ceramic adhesive, and the adhesive is dried and fixed.
【００１３】相変化物質４は当初に粉体を充填し、加熱
溶融する。相変化物質として、例えば使用温度が７００
〜８００℃であるときは、融点が７２３℃のＬｉ2 ＣＯ
3 を使用するのがよく、使用温度が８００〜１０００℃
であるときは、融点が８９８℃のＫ2 ＣＯ3 を使用する
のがよい。The phase change material 4 is initially filled with a powder and is heated and melted. As the phase change substance, for example, the use temperature is 700
When the temperature is ~ 800 ° C, Li 2 CO 3 having a melting point of 723 ° C is used.
It is good to use 3 , the operating temperature is 800-1000 ℃
When, K 2 CO 3 having a melting point of 898 ° C. is preferably used.
【００１４】図２は、本発明の蓄熱形熱交換器を鋼材な
どの加熱炉の空気予熱に使用したときの系統図である。
図２において、６は蓄熱形熱交換器である。蓄熱形熱交
換器６は、図４として断面図に示すように、蓄熱体１を
断熱材６ｃにより囲繞してなる。FIG. 2 is a system diagram when the regenerative heat exchanger of the present invention is used for preheating the air of a heating furnace made of steel or the like.
In FIG. 2, reference numeral 6 denotes a regenerative heat exchanger. The heat storage type heat exchanger 6, as shown in the sectional view of FIG. 4, surrounds the heat storage body 1 with a heat insulating material 6c.
【００１５】７は鋼材などの加熱に使用する加熱炉で、
バーナ７ａを有している。８は四方切換弁である。９は
空気流である。図のように、左側の蓄熱形熱交換器６ａ
を放熱に使用し、右側の蓄熱形熱交換器６ｂを蓄熱に使
用する場合の空気流９を実線で示し、右側の蓄熱形熱交
換器６ｂを放熱して使用し、左側の蓄熱形熱交換器６ａ
を蓄熱に使用する場合の空気流９ａを点線で示す。Reference numeral 7 denotes a heating furnace used for heating steel materials and the like.
It has a burner 7a. 8 is a four-way switching valve. 9 is an air flow. As shown in the figure, the left-side regenerative heat exchanger 6a
Is used for heat dissipation, the air flow 9 when the right heat storage type heat exchanger 6b is used for heat storage is shown by a solid line, the right heat storage type heat exchanger 6b is used for heat release, and the left heat storage type heat exchanger 6b is used. Vessel 6a
Is used for storing heat, the air flow 9a is indicated by a dotted line.
【００１６】次に図２の系統図の作用を説明する。常温
の空気流９は、切換弁８を通って左側の蓄熱形熱交換器
６ａに流入する。熱交換器６ａは、高温状態となってお
り蓄熱体１内の相変化物質４は液相である。蓄熱体１内
を常温の空気９が流れると、蓄熱体１は放熱し、空気流
９は加熱される。蓄熱体１が放熱している間に相変化物
質４は相変化し凝固する。相変化が行われている間は蓄
熱体１の温度は一定を保っており、したがって、熱交換
器６の出口ａ点での空気流９の温度は一定である。加熱
された空気流９はバーナ７ａで燃料と混合され、加熱炉
７内で燃焼する。１０は火炎である。加熱炉７を出た高
温の空気流９は、右側の蓄熱形熱交換器６ｂに流入し、
蓄熱体１を加熱する。この際、熱交換器６ｂは低温状態
となっており、蓄熱体１内の相変化物質４は固相であ
る。高温の空気流９により、加熱されている間に蓄熱体
１は蓄熱し、相変化物質４は相変化し、溶融する。相変
化が行われている間は、融解の潜熱として蓄熱が行われ
ているので蓄熱量が大きい。Next, the operation of the system diagram shown in FIG. 2 will be described. The normal-temperature air flow 9 flows into the regenerative heat exchanger 6a on the left side through the switching valve 8. The heat exchanger 6a is in a high temperature state, and the phase change substance 4 in the heat storage body 1 is in a liquid phase. When the room temperature air 9 flows through the heat storage 1, the heat storage 1 radiates heat and the air flow 9 is heated. While the heat storage body 1 is releasing heat, the phase change substance 4 changes phase and solidifies. During the phase change, the temperature of the heat accumulator 1 remains constant, so that the temperature of the air flow 9 at the outlet a of the heat exchanger 6 is constant. The heated air stream 9 is mixed with fuel in a burner 7 a and burns in the heating furnace 7. 10 is a flame. The high-temperature air flow 9 that has exited the heating furnace 7 flows into the regenerative heat exchanger 6b on the right side,
Heat storage element 1 is heated. At this time, the heat exchanger 6b is in a low temperature state, and the phase change substance 4 in the heat storage body 1 is a solid phase. The heat storage body 1 stores heat while being heated by the high-temperature air flow 9, and the phase change material 4 changes its phase and melts. During the phase change, heat is stored as latent heat of melting, so that the heat storage amount is large.
【００１７】蓄熱形熱交換器６ｂを出た空気流は、４方
切換弁８を通って外部に放出される。切換弁８は所要の
時間毎に切換が行われ、実線の空気流９と点線の空気流
９ａが交互に流れ、蓄熱形熱交換器６ａ、６ｂは蓄熱と
放熱とを交互に行う。The air flow exiting the regenerative heat exchanger 6b is discharged outside through a four-way switching valve 8. The switching valve 8 is switched every required time, and the solid line air flow 9 and the dotted line air flow 9a alternately flow, and the heat storage type heat exchangers 6a and 6b alternately store and release heat.
【００１８】次に本実施形態の作用を説明する。蓄熱体
１としてのハニカム２内は、流体流路３と相変化物質４
を充填した流路部分とが隣接し合っている。流体流路３
内に空気流９を流すと相変化物質４と空気流９との間で
伝熱が起る。加熱流体として高温の空気流を蓄熱体１の
流路３に流し、蓄熱体１を加熱すると相変化物質４は溶
融し、固相から液相に相変化する。相変化により大きな
熱エネルギが潜熱として蓄熱体１内に蓄積される。Next, the operation of the present embodiment will be described. Inside the honeycomb 2 as the heat storage body 1, the fluid flow path 3 and the phase change material 4
Are adjacent to each other. Fluid flow path 3
When an air flow 9 flows through the inside, heat transfer occurs between the phase change material 4 and the air flow 9. When a high-temperature air stream is passed through the flow path 3 of the heat storage element 1 as a heating fluid and the heat storage element 1 is heated, the phase change substance 4 is melted and changes its phase from a solid phase to a liquid phase. Due to the phase change, large heat energy is stored in the heat storage body 1 as latent heat.
【００１９】次に蓄熱体１内を流れる流体を切替て被加
熱流体として低温の空気流９を流す。蓄熱体１内に蓄積
された熱エネルギは空気流９に伝達され、空気流９が昇
温するとともに、蓄熱体１の温度は低下し、相変化物質
４は液相から固相に相変化する。この際、相変化物質４
は潜熱を放出するが、相変化が行われている間は、相変
化物質４の温度は、その物質固有の溶点として一定温度
を保つので、蓄熱形熱交換器６を流れる空気流９の出口
温度も一定に保つことができる。Next, the fluid flowing in the heat storage body 1 is switched, and a low-temperature air flow 9 is caused to flow as the fluid to be heated. The heat energy stored in the heat accumulator 1 is transmitted to the air flow 9, and the temperature of the heat accumulator 1 decreases as the temperature of the air flow 9 increases, and the phase change material 4 changes its phase from a liquid phase to a solid phase. . At this time, the phase change substance 4
Releases the latent heat, but during the phase change, the temperature of the phase change material 4 is kept at a constant temperature as a melting point unique to the material, so that the air flow 9 flowing through the regenerative heat exchanger 6 The outlet temperature can also be kept constant.
【００２０】図３は、相変化物質４として、Ｌｉ2 ＣＯ
3 を使用した蓄熱形熱交換器６の温度変化と蓄熱量（エ
ンタルピ）の関係と、蓄熱体としてＡｌ2 Ｏ3 製のハニ
カムのみを使用したときの温度変化と蓄熱量の関係を図
示している。図に示すように温度が４００℃から８００
℃に変化したとき、蓄熱体がハニカム（Ａｌ2 Ｏ3 ）の
みでは蓄熱量は４．８ＭＪ／ｋｇであるのに対し、蓄熱
体がハニカムにＬｉ2ＣＯ3 を充填したものであるとき
には１５．４ＭＪ／ｋｇであり、その内、潜熱分は６Ｍ
Ｊ／ｋｇである。たとえば、相変化物質４の蒸発が問題
になる場合には蓋をすればよいなどである。FIG. 3 shows that the phase change material 4 is Li 2 CO 3
3 shows the relationship between the temperature change and the heat storage amount (enthalpy) of the heat storage type heat exchanger 6 using the heat exchanger 3, and the relationship between the temperature change and the heat storage amount when only the honeycomb made of Al 2 O 3 is used as the heat storage body. I have. As shown in the figure, the temperature is 400
When the temperature is changed to ° C., the heat storage amount is 4.8 MJ / kg when the heat storage body is only honeycomb (Al 2 O 3 ), whereas when the heat storage body is a honeycomb body filled with Li 2 CO 3 , 15. 4MJ / kg, of which 6M is latent heat
J / kg. For example, if evaporation of the phase change substance 4 becomes a problem, a lid may be used.
【００２１】本発明は、以上述べた実施形態に限定され
るものではなく、発明の要旨を逸脱しない範囲で種々の
変更が可能である。The present invention is not limited to the embodiments described above, and various changes can be made without departing from the gist of the invention.
【００２２】[0022]
【発明の効果】以上述べたように、本発明の蓄熱形熱交
換機は、蓄熱体としてハニカムに高温溶融炭酸塩等の相
変化物質を充填したものを使用したので、次のような優
れた効果がある。 （１）単位体積当りの蓄熱量が大きく、全体がコンパク
トにできる。 （２）相変化温度（融点）を利用するため、一定加熱温
度を実現することができる。 （３）ハニカムは水力直径が小さく高熱伝達が可能であ
り伝熱面積が大きい。 （４）相変化物質、充填セル数とその配置などを適宜選
定することにより、大型化や多様な要求温度に対応する
システムの構築が可能である。 （５）相変化物質の体積膨張は、液体上面が自由表面な
ので、吸収可能で熱応力の問題がない。As described above, the regenerative heat exchanger of the present invention uses a honeycomb in which a phase-change material such as a high-temperature molten carbonate is filled in a honeycomb as a regenerator. There is. (1) The heat storage amount per unit volume is large, and the whole can be made compact. (2) Since the phase change temperature (melting point) is used, a constant heating temperature can be realized. (3) The honeycomb has a small hydraulic diameter, is capable of high heat transfer, and has a large heat transfer area. (4) By appropriately selecting the phase change material, the number of packed cells, their arrangement, and the like, it is possible to build a system that can respond to a large size and various required temperatures. (5) The volume expansion of the phase change substance can be absorbed since the liquid upper surface is a free surface, and there is no problem of thermal stress.
【図１】本発明の蓄熱形熱交換器の蓄熱体の図面で、
（Ａ）は斜視図、（Ｂ）は図（Ａ）のＡ−Ａ矢視断面図
である。FIG. 1 is a drawing of a heat storage body of a heat storage type heat exchanger of the present invention,
(A) is a perspective view, and (B) is a cross-sectional view taken along the line AA of FIG. (A).
【図２】本発明の蓄熱形熱交換器を加熱炉に適用したと
きの系統図である。FIG. 2 is a system diagram when the heat storage type heat exchanger of the present invention is applied to a heating furnace.
【図３】温度と蓄熱量との関係を示すグラフである。FIG. 3 is a graph showing a relationship between a temperature and a heat storage amount.
【図４】蓄熱形熱交換器の断面図である。FIG. 4 is a sectional view of a heat storage type heat exchanger.
【図５】従来の潜熱蓄熱セラミックペブルの断面図であ
る。FIG. 5 is a sectional view of a conventional latent heat storage ceramic pebble.
１ 蓄熱体 ２ セラミックハニカム ３ 流体流路 ４ 相変化物質 DESCRIPTION OF SYMBOLS 1 Heat storage body 2 Ceramic honeycomb 3 Fluid flow path 4 Phase change substance
Claims (4)
カムを流路が上下方向を向くように配置し、各流路の１
本おきに使用温度において固体と液体との間で相変化す
る相変化物質を充填した蓄熱体を有してなることを特徴
とする蓄熱形交換器。1. A ceramic honeycomb having a number of fluid flow paths is arranged so that the flow paths face up and down.
A heat storage type exchanger comprising a heat storage element filled with a phase change material which changes phase between a solid and a liquid at a use temperature every other time.
充填してなる請求項１記載の蓄熱形熱交換器。2. The heat storage type heat exchanger according to claim 1, wherein the phase change material is filled in every other row of the honeycomb channel.
填してなる請求項１記載の蓄熱形熱交換器。3. The heat storage type heat exchanger according to claim 1, wherein the honeycomb channel is filled with the phase change material in a staggered manner.
る請求項１ないし請求項３記載の蓄熱形熱交換器。4. The heat storage type heat exchanger according to claim 1, wherein the phase change substance is an alkali metal carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10068456A JPH11264683A (en) | 1998-03-18 | 1998-03-18 | Heat storage type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10068456A JPH11264683A (en) | 1998-03-18 | 1998-03-18 | Heat storage type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11264683A true JPH11264683A (en) | 1999-09-28 |
Family
ID=13374229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10068456A Pending JPH11264683A (en) | 1998-03-18 | 1998-03-18 | Heat storage type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11264683A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003027592A1 (en) | 2001-09-25 | 2003-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Heat accumulation unit and method of manufacturing the unit |
| EP1426720A1 (en) * | 2002-11-22 | 2004-06-09 | HONDA MOTOR CO., Ltd. | Heat storage apparatus |
| US7159643B2 (en) | 2003-02-19 | 2007-01-09 | Honda Motor Co., Ltd. | Heat storing element and method for manufacturing heat storage apparatus using the element |
| JP2011037240A (en) * | 2009-08-18 | 2011-02-24 | Ngk Insulators Ltd | Method of manufacturing honeycomb structure |
| EP2293002A2 (en) | 2009-09-03 | 2011-03-09 | NGK Insulators, Ltd. | Heat Accumulation Element |
| US8794195B2 (en) | 2012-02-03 | 2014-08-05 | Ford Global Technologies, Llc | Heat storage system for an engine |
| CN104089512A (en) * | 2014-06-30 | 2014-10-08 | 华南理工大学 | Heat storage body and heat storage structure of heat storage body, forming die and manufacturing method |
| CN104236359A (en) * | 2014-10-09 | 2014-12-24 | 中国石油大学 | Step phase change heat storage and heat release integrated device with metal foam |
| US9291406B2 (en) | 2011-02-11 | 2016-03-22 | Commissariat à l'énergie atomique et aux énergies alternatives | Heat-absorbing device with phase-change material |
| WO2016076035A1 (en) * | 2014-11-10 | 2016-05-19 | 日本碍子株式会社 | Container housing heat storage material |
| CN107906993A (en) * | 2017-10-31 | 2018-04-13 | 全球能源互联网研究院有限公司 | A kind of supporting structure of heat-storing device |
| CN108931064A (en) * | 2018-04-26 | 2018-12-04 | 福建工程学院 | A kind of cylinder solar energy high temperature energy storage and the heat dump that exchanges heat |
| US20230384040A1 (en) * | 2022-05-24 | 2023-11-30 | Shinko Electric Industries Co., Ltd. | Latent heat storage |
| US20230384041A1 (en) * | 2022-05-24 | 2023-11-30 | Shinko Electric Industries Co., Ltd. | Latent heat storage |
-
1998
- 1998-03-18 JP JP10068456A patent/JPH11264683A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003027592A1 (en) | 2001-09-25 | 2003-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Heat accumulation unit and method of manufacturing the unit |
| EP1431694A4 (en) * | 2001-09-25 | 2012-10-31 | Honda Motor Co Ltd | Heat accumulation unit and method of manufacturing the unit |
| EP1426720A1 (en) * | 2002-11-22 | 2004-06-09 | HONDA MOTOR CO., Ltd. | Heat storage apparatus |
| US7035532B2 (en) | 2002-11-22 | 2006-04-25 | Honda Motor Co., Ltd. | Heat storage apparatus with spiral electrically heated phase change material |
| US7159643B2 (en) | 2003-02-19 | 2007-01-09 | Honda Motor Co., Ltd. | Heat storing element and method for manufacturing heat storage apparatus using the element |
| JP2011037240A (en) * | 2009-08-18 | 2011-02-24 | Ngk Insulators Ltd | Method of manufacturing honeycomb structure |
| EP2293002A2 (en) | 2009-09-03 | 2011-03-09 | NGK Insulators, Ltd. | Heat Accumulation Element |
| US9291406B2 (en) | 2011-02-11 | 2016-03-22 | Commissariat à l'énergie atomique et aux énergies alternatives | Heat-absorbing device with phase-change material |
| US8794195B2 (en) | 2012-02-03 | 2014-08-05 | Ford Global Technologies, Llc | Heat storage system for an engine |
| CN104089512A (en) * | 2014-06-30 | 2014-10-08 | 华南理工大学 | Heat storage body and heat storage structure of heat storage body, forming die and manufacturing method |
| CN104236359B (en) * | 2014-10-09 | 2016-02-03 | 上海交通大学 | A kind of step phase-transition heat-storage heat release integrated apparatus adopting metal foam |
| CN104236359A (en) * | 2014-10-09 | 2014-12-24 | 中国石油大学 | Step phase change heat storage and heat release integrated device with metal foam |
| WO2016076035A1 (en) * | 2014-11-10 | 2016-05-19 | 日本碍子株式会社 | Container housing heat storage material |
| US20160282056A1 (en) * | 2014-11-10 | 2016-09-29 | Ngk Insulators, Ltd. | Heat storage material container |
| JPWO2016076035A1 (en) * | 2014-11-10 | 2017-08-17 | 日本碍子株式会社 | Container for storing heat storage material |
| EP3093603A4 (en) * | 2014-11-10 | 2017-09-27 | NGK Insulators, Ltd. | Container housing heat storage material |
| US10359236B2 (en) | 2014-11-10 | 2019-07-23 | Ngk Insulators, Ltd. | Heat storage material container |
| CN107906993A (en) * | 2017-10-31 | 2018-04-13 | 全球能源互联网研究院有限公司 | A kind of supporting structure of heat-storing device |
| CN108931064A (en) * | 2018-04-26 | 2018-12-04 | 福建工程学院 | A kind of cylinder solar energy high temperature energy storage and the heat dump that exchanges heat |
| US20230384040A1 (en) * | 2022-05-24 | 2023-11-30 | Shinko Electric Industries Co., Ltd. | Latent heat storage |
| US20230384041A1 (en) * | 2022-05-24 | 2023-11-30 | Shinko Electric Industries Co., Ltd. | Latent heat storage |
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