JPH0477222B2 - - Google Patents
Info
- Publication number
- JPH0477222B2 JPH0477222B2 JP61028982A JP2898286A JPH0477222B2 JP H0477222 B2 JPH0477222 B2 JP H0477222B2 JP 61028982 A JP61028982 A JP 61028982A JP 2898286 A JP2898286 A JP 2898286A JP H0477222 B2 JPH0477222 B2 JP H0477222B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- metal hydride
- container
- hydrogen
- containers
- 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 - Lifetime
Links
- 229910052987 metal hydride Inorganic materials 0.000 claims description 116
- 150000004681 metal hydrides Chemical class 0.000 claims description 116
- 239000001257 hydrogen Substances 0.000 claims description 74
- 229910052739 hydrogen Inorganic materials 0.000 claims description 74
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 64
- 230000020169 heat generation Effects 0.000 claims description 34
- 238000005338 heat storage Methods 0.000 claims description 20
- 239000000498 cooling water Substances 0.000 claims description 11
- 150000002431 hydrogen Chemical class 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 12
- 230000007423 decrease Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910003310 Ni-Al Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002699 waste material 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
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は金属水素化物を利用した熱輸送装置に
関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a heat transport device using metal hydrides.
(ロ) 従来の技術
従来、太陽熱集熱器や地熱等のローカルエネル
ギーの熱輸送方法は、水、油等の熱媒を循環させ
る方法であつたため熱輸送効率が良くなかつた。
このような点に鑑み出願人は先に金属水素化物を
利用して熱発生側から熱利用側に効率良く熱輸送
するシステムを提案した（特願昭60−206292号参
照）。(b) Conventional technology Conventionally, heat transport methods for local energy such as solar heat collectors and geothermal heat have not had good heat transport efficiency because they have involved circulating heat media such as water and oil.
In view of these points, the applicant has previously proposed a system for efficiently transporting heat from the heat generation side to the heat utilization side using metal hydrides (see Japanese Patent Application No. 206292/1982).
これは熱発生側と熱利用側にそれぞれ２つの金
属水素化物容器を設置し、それぞれを２本の水素
配管で連結し、熱発生側で生じる熱を一方の金属
水素化物容器に与えて水素を発生させ、これを一
方の水素配管を介して熱利用側に送り、一方の金
属水素化物容器を介して熱を取り出し利用すると
同時に、廃熱を利用して熱利用側の他方の金属水
素化物容器から他方の水素配管を介して熱発生側
の他方の冷却した金属水素化物容器に水素を戻す
操作を交互に切り替えて連続して行なうようにし
たものである。 This involves installing two metal hydride containers on the heat generation side and heat utilization side, and connecting each with two hydrogen pipes.The heat generated on the heat generation side is applied to one metal hydride container to generate hydrogen. The generated heat is sent to the heat utilization side via one hydrogen pipe, and the heat is extracted and utilized via one metal hydride container, and at the same time, the waste heat is used to transfer the heat to the other metal hydride container on the heat utilization side. The operation of returning hydrogen from the reactor to the other cooled metal hydride container on the heat generation side via the other hydrogen pipe is alternately and continuously carried out.
この熱輸送装置によれば、輸送中の熱損失を少
なくして熱輸送を効率良く行なうことができるよ
うになるものの、熱発生側で生じる熱量あるいは
熱利用側で使用する熱量が大きく変動して熱発生
側金属水素化物容器内の水素圧力が減少した場合
に、熱利用側での熱使用量に見合う水素ガスを熱
発生側から供給することが困難になる問題点があ
つた。 Although this heat transport device can reduce heat loss during transport and transport heat efficiently, the amount of heat generated on the heat generation side or the amount of heat used on the heat utilization side fluctuates greatly. There is a problem in that when the hydrogen pressure in the metal hydride container on the heat generation side decreases, it becomes difficult to supply hydrogen gas from the heat generation side to match the amount of heat used on the heat utilization side.
(ハ) 発明が解決しようとする問題点
本発明は出願人が先に提案した熱輸送装置を更
に改善して熱利用側に常にその熱使用量に見合う
水素を供給し得る安定で熱利用効果の高い熱輸送
システムを提供することを目的とする。(C) Problems to be Solved by the Invention The present invention further improves the heat transport device previously proposed by the applicant to provide a stable and efficient heat utilization system that can always supply hydrogen in proportion to the amount of heat used on the heat utilization side. The purpose is to provide a high heat transport system.
(ニ) 問題点を解決するための手段
本発明は、熱発生個所に配置された、熱源から
熱媒を流すための第１の熱交換器３ａ，３ｂと冷
却水源から冷却水を流すための第２の熱交換器４
ａ，４ｂとが金属水素化物５を密封した耐圧容器
内部を気密に貫通配置されてなる２つの金属水素
化物容器１ａ，１ｂと、これらの２つの金属水素
化物容器１ａ，１ｂのうち水素輸送側の容器に設
けられた前記第１の熱交換器３ａ，３ｂを選択し
て前記熱源から熱媒を流すように切り替える第１
の切替弁６と、前記２つの金属水素化物容器１
ａ，１ｂのうち水素貯蔵側の容器に設けられた前
記第２の熱交換器４ａ，４ｂを選択して前記冷却
水を流すように切り替える第２の切替弁８と、熱
利用個所側に配置された、熱負荷へ熱媒を流すた
めの第３の熱交換器１０ａ，１０ｂと低質熱源か
ら熱媒を流すための第４の熱交換器１１ａ，１１
ｂとが金属水素化物１２を密封した耐圧容器内部
を気密に貫通配置されてなる２つの金属水素化物
容器２ａ，２ｂと、これらの２つの金属水素化物
容器２ａ，２ｂのうち水素貯蔵側の容器に設けら
れた前記第３の熱交換器１０ａ，１０ｂを選択し
て前記熱負荷へ熱媒を流すように切替える第３の
切替弁１３と、前記２つの金属水素化物容器２
ａ，２ｂのうち水素輸送側の容器に設けられた前
記第４の熱交換器１１ａ，１１ｂを選択して前記
低質熱源から熱媒を流すように切替える第４の切
替弁１５と、前記熱発生個所側に設けられた水素
輸送側の容器と前記熱利用個所側に設けられた水
素貯蔵側の容器および前記熱発生個所側に設けら
れた水素貯蔵側の容器と前記熱利用個所側に設け
られた水素輸送側の容器をそれぞれ連絡する２本
の水素配管１７ａ，１７ｂと、冷水を流して冷却
するための第５の熱交換器２５ａ，２５ｂと金属
水素化物２６とが密封した耐圧容器内部を気密に
貫通配置され、それぞれ前記２本の水素配管１７
ａ，１７ｂに接続される２つの蓄熱用金属水素化
物容器２４ａ，２４ｂと、これらの２つの蓄熱用
金属水素化物容器２４ａ，２４ｂのうちの前記熱
発生個所側の金属水素化物容器１ａ，１ｂの水素
輸送側に接続する蓄熱用金属水素化物容器２４
ａ，２４ｂの前記第５の熱交換器２５ａ，２５ｂ
を選択して前記冷水を流すように切替える第５の
切替弁２７と、前記熱発生個所側の高温媒体から
の熱媒の温度レベルまたは前記熱発生個所側の金
属水素化物容器内水素圧力に応じて前記熱発生個
所側から前記熱利用個所側に輸送する水素が余剰
するとき前記蓄熱用金属水素化物容器２４ａ，２
４ｂに水素を貯えるように切替える一方、不足す
るとき前記蓄熱用金属水素化物容器２４ａ，２１
ｂから取り出すように切替える第６の切替弁１
８，１９，２０，２１，２２，２３とを設けるよ
うにしたものである。(d) Means for Solving the Problems The present invention provides first heat exchangers 3a and 3b disposed at heat generation locations for flowing a heat medium from a heat source and for flowing cooling water from a cooling water source. Second heat exchanger 4
two metal hydride containers 1a, 1b in which the metal hydride containers 1a, 4b are arranged to airtightly penetrate the inside of the pressure container in which the metal hydride 5 is sealed, and the hydrogen transport side of these two metal hydride containers 1a, 1b. The first heat exchanger 3a, 3b provided in the container is selected and switched to flow the heat medium from the heat source.
a switching valve 6, and the two metal hydride containers 1.
A second switching valve 8 that selects the second heat exchanger 4a, 4b provided in the container on the hydrogen storage side among a, 1b and switches the cooling water to flow, and a second switching valve 8 disposed on the heat utilization side. third heat exchangers 10a, 10b for flowing the heat medium to the heat load, and fourth heat exchangers 11a, 11 for flowing the heat medium from the low-quality heat source.
two metal hydride containers 2a, 2b which are arranged to airtightly penetrate the inside of the pressure container in which the metal hydride 12 is sealed; and a container on the hydrogen storage side of these two metal hydride containers 2a, 2b a third switching valve 13 that selects the third heat exchanger 10a, 10b provided in the third heat exchanger 10a, 10b and switches the heat medium to flow to the heat load; and the two metal hydride containers 2.
A fourth switching valve 15 that selects the fourth heat exchanger 11a, 11b provided in the container on the hydrogen transport side from among a, 2b and switches the heat medium to flow from the low-quality heat source; A hydrogen transport side container provided at the heat utilization point side, a hydrogen storage side container provided at the heat utilization point side, a hydrogen storage side container provided at the heat generation point side, and a hydrogen storage side container provided at the heat utilization point side. Two hydrogen pipes 17a and 17b connecting the hydrogen transport side containers, fifth heat exchangers 25a and 25b for cooling by flowing cold water, and a metal hydride 26 connect the inside of the sealed pressure-resistant container. The two hydrogen pipes 17 are arranged airtightly through each other.
a, 17b, and of these two metal hydride containers 24a, 24b, the metal hydride containers 1a, 1b on the heat generation side side Heat storage metal hydride container 24 connected to the hydrogen transport side
the fifth heat exchangers 25a, 25b of a, 24b;
and a fifth switching valve 27 that selects and switches the cold water to flow, depending on the temperature level of the heating medium from the high temperature medium on the side of the heat generation location or the hydrogen pressure in the metal hydride container on the side of the heat generation location. When there is surplus hydrogen to be transported from the heat generation area to the heat utilization area, the heat storage metal hydride containers 24a, 2
4b to store hydrogen, and when there is a shortage, the heat storage metal hydride containers 24a, 21
6th switching valve 1 that switches to take out from b
8, 19, 20, 21, 22, and 23.
(チ) 作用
このように、熱発生側金属水素化物容器と熱利
用側金属水素化物容器と、蓄熱用金属水素化物容
器とをそれぞれ開閉弁を介して水素配管で接続
し、熱利用過程における熱発生側の熱供給量ある
いは熱利用側の熱使用量が大きく変動したときの
余剰熱量を水素に変換して蓄熱用金属水素化物容
器に貯える一方、不足熱量に見合う水素をその蓄
熱用金属水素化物から取り出し熱利用側に供給す
ることにより、熱利用側に水素を安定供給し、熱
負荷を安定に駆動することができるようになる。(H) Effect In this way, the metal hydride container on the heat generation side, the metal hydride container on the heat utilization side, and the metal hydride container for heat storage are connected by hydrogen piping via respective on-off valves, and the When the amount of heat supplied on the generation side or the amount of heat used on the heat utilization side fluctuates significantly, surplus heat is converted into hydrogen and stored in the metal hydride container for heat storage, while hydrogen corresponding to the insufficient amount of heat is converted into the metal hydride for heat storage. By extracting hydrogen from hydrogen and supplying it to the heat utilization side, hydrogen can be stably supplied to the heat utilization side and the heat load can be stably driven.
(ヘ) 実施例
以下、本発明の実施例を図面を参照して説明す
る。(f) Examples Examples of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例に係る熱輸送装置の
概念構成図を示したものである。図において、熱
発生側には、２つの金属水素化物容器１ａ，１ｂ
を備えた熱輸送ユニツト１が設置される一方、熱
利用側には同じく２つの金属水素化物容器２ａ，
２ｂを備えた熱再生ユニツト２が設置されてい
る。 FIG. 1 shows a conceptual configuration diagram of a heat transport device according to an embodiment of the present invention. In the figure, there are two metal hydride containers 1a and 1b on the heat generation side.
A heat transport unit 1 equipped with a
A heat regeneration unit 2 with 2b is installed.
熱発生側の２つの金属水素化物容器１ａ，１ｂ
には、それぞれ熱交換器３ａ，３ｂ；４ａ，４ｂ
と共に金属水素化物５が収納される。熱交換器３
ａ，３ｂには、三方切替弁６を介して太陽熱ある
いは地熱等の高温熱源より熱媒７が選択的に供給
されるように配管されている。また、熱交換器４
ａ，４ｂには三方切替弁８を介して冷却水９が選
択的に供給されるように配管されている。 Two metal hydride containers 1a, 1b on the heat generation side
are heat exchangers 3a, 3b; 4a, 4b, respectively.
A metal hydride 5 is also housed therein. heat exchanger 3
A and 3b are piped so that a heat medium 7 is selectively supplied via a three-way switching valve 6 from a high-temperature heat source such as solar heat or geothermal heat. In addition, heat exchanger 4
A and 4b are piped so that cooling water 9 is selectively supplied via a three-way switching valve 8.
一方、熱利用側の２つの金属水素化物容器２
ａ，２ｂには、それぞれ熱交換器１０ａ，１０
ｂ；１１ａ，１１ｂと共に、金属水素化物１２が
収納される。熱交換器１０ａ，１０ｂには三方切
替弁１３を介して熱負荷より熱媒１４が選択的に
供給されるように配管されている。また、熱交換
器１１ａ，１１ｂには三方切替弁１５を介して廃
熱源から熱媒１６が選択的に供給されるように配
管されている。 On the other hand, two metal hydride containers 2 on the heat utilization side
Heat exchangers 10a and 10 are installed in a and 2b, respectively.
b; Metal hydride 12 is stored together with 11a and 11b. The heat exchangers 10a and 10b are piped so that a heat medium 14 is selectively supplied to the heat exchangers 10a and 10b via a three-way switching valve 13 depending on the heat load. Further, the heat exchangers 11a and 11b are piped so that a heat medium 16 is selectively supplied from a waste heat source via a three-way switching valve 15.
熱発生側の金属水素化物容器１ａ，１ｂと熱利
用側の金属水素化物容器２ａ，２ｂとの間は、そ
れぞれ２本の水素配管１７ａ，１７ｂで接続され
る。その２本の水素配管１７ａ，１７ｂには、そ
れぞれ開閉弁１８，１９；２０，２１が設けられ
ると共に、それぞれ開閉弁２２，２３を介して蓄
熱用金属水素化物容器２４ａ，２４ｂが水素配管
で接続されている。 The metal hydride containers 1a, 1b on the heat generation side and the metal hydride containers 2a, 2b on the heat utilization side are connected by two hydrogen pipes 17a, 17b, respectively. The two hydrogen pipes 17a, 17b are provided with on-off valves 18, 19; 20, 21, respectively, and are connected to heat storage metal hydride containers 24a, 24b via the on-off valves 22, 23, respectively. has been done.
その蓄熱用金属水素化物容器２４ａ，２４ｂに
は、それぞれ熱交換器２５ａ，２５ｂと共に金属
水素化物２６が収納され、熱交換器２５ａ，２５
ｂには三方切替弁２７を介して冷水源から冷水２
８が選択的に供給されるように配管されている。 The heat storage metal hydride containers 24a and 24b house a metal hydride 26 together with heat exchangers 25a and 25b, respectively, and the heat exchangers 25a and 25
Cold water 2 is supplied to b from the cold water source via the three-way switching valve 27.
8 is selectively supplied.
なお、蓄熱用金属水素化物容器２４ａ，２４ｂ
の設置場所は、図示の熱発生側と熱利用側の丁度
中間に限らず、熱発生側に近いところでもよい
し、熱利用側に近い所でもよい。 Note that the heat storage metal hydride containers 24a and 24b
The installation location is not limited to the exact midway between the heat generation side and the heat utilization side as shown in the figure, but may be a location close to the heat generation side or a location close to the heat utilization side.
以上の構成で、各金属水素化物容器内には、第
２図のvan′t Hoffプロツトで示す平衝特性の金
属水素化物を予め収納しておく。即ち、熱発生側
の金属水素化物容器１ａ，１ｂには第２図のl1で
示す平衝特性の金属水素化物例えばLa−Nd−Ni
系の金属水素化物５を収納する。熱利用側の金属
水素化物容器２ａ，２ｂにはl2で示す平衝特性の
金属水素化物例えばLa−Ni−Al系の金属水素化
物１２を収納する。蓄熱用金属水素化物容器２４
ａ，２４ｂにはl3で示す平衝特性の金属水素化物
例えばLa−Nd−Ni系の金属水素化物２６を収納
する。 With the above configuration, a metal hydride having equilibrium characteristics shown in the van't Hoff plot in FIG. 2 is stored in advance in each metal hydride container. That is, the metal hydride containers 1a and 1b on the heat generation side are filled with a metal hydride having equilibrium characteristics as shown by l1 in FIG. 2, such as La-Nd-Ni.
The metal hydride 5 of the system is stored. The metal hydride containers 2a and 2b on the heat utilization side contain a metal hydride 12 having equilibrium characteristics indicated by l2 , such as a La-Ni-Al metal hydride 12. Heat storage metal hydride container 24
A and 24b house a metal hydride 26 having equilibrium characteristics indicated by l 3 , for example, a La-Nd-Ni metal hydride 26 .
一方、ソーラコレクタや工場廃熱源等の高温熱
源から熱輸送ユニツト１に供給される熱媒７の平
均温度レベルを90℃以上とする。また、熱利用側
で低質の廃熱源より熱再生ユニツト２に供給する
熱媒１６の温度レベルを50℃程度、冷却水９およ
び冷水２８の温度レベルを20℃程度とする。 On the other hand, the average temperature level of the heat medium 7 supplied to the heat transport unit 1 from a high-temperature heat source such as a solar collector or a factory waste heat source is set to 90° C. or higher. Further, on the heat utilization side, the temperature level of the heat medium 16 supplied from a low-quality waste heat source to the heat regeneration unit 2 is set at about 50°C, and the temperature level of the cooling water 9 and the cold water 28 is set at about 20°C.
さて、今、金属水素化物容器１ａ，２ａが熱負
荷に熱を供給する熱利用過程、金属水素化物容器
１ｂ，２ｂが水素を熱発生側に戻す再生過程にあ
るものとすると、三方切替弁６の切替操作によ
り、平均として90℃程度の高温熱媒７が熱交換器
３ａに、三方切替弁８および２７の切替操作によ
り、20℃程度の冷却水９および冷水２８がそれぞ
れ熱交換器４ａおよび２５ａに、また、三方切替
弁１５の切替操作により、50℃程度の低質の廃熱
源より熱媒１６が熱交換器１１ｂに、更に、三方
切替弁１３の切替操作により熱負荷より戻される
熱媒１４が熱交換器１０ａに供給される。 Now, assuming that the metal hydride containers 1a and 2a are in the heat utilization process of supplying heat to the heat load, and the metal hydride containers 1b and 2b are in the regeneration process of returning hydrogen to the heat generation side, the three-way switching valve 6 By switching the three-way switching valves 8 and 27, the high-temperature heat medium 7 with an average temperature of about 90°C is transferred to the heat exchanger 3a, and by switching the three-way switching valves 8 and 27, the cooling water 9 and cold water 28, which are about 20°C, are transferred to the heat exchanger 4a and the heat exchanger 3a, respectively. 25a, and by switching the three-way switching valve 15, a heat medium 16 from a low-quality waste heat source of about 50° C. is returned to the heat exchanger 11b, and further, by switching the three-way switching valve 13, the heat medium 16 is returned from the heat load. 14 is supplied to the heat exchanger 10a.
このとき、金属水素化物容器１ｂ，２ｂ間では
開閉弁２０，２１は開、開閉弁２３は閉に切替操
作される。これにより、第２図のＣ点よりＤ点に
示す如く、金属水素化物容器２ｂより金属水素化
物容器１ｂに水素配管１７ｂを介して水素が移動
し、再生過程が行なわれる。 At this time, the on-off valves 20 and 21 are opened and the on-off valve 23 is closed between the metal hydride containers 1b and 2b. As a result, as shown from point C to point D in FIG. 2, hydrogen moves from metal hydride container 2b to metal hydride container 1b via hydrogen pipe 17b, and a regeneration process is performed.
一方、金属水素化物容器１ａ，２ａ間では、熱
利用側の熱負荷の変動あるいは熱発生側の高温熱
媒７の温度変動などによる金属水素化物容器１ａ
内の水素圧力の変動に対しても常に熱負荷が必要
とする温度レベルのあるいは熱量の熱媒を金属水
素化物容器２ａ内より取り出せるように開閉弁１
８，１９および２２が切替操作される。 On the other hand, between the metal hydride containers 1a and 2a, the metal hydride container 1a
The on-off valve 1 is designed so that the heat medium at the temperature level or calorific value required for the heat load can always be taken out from the metal hydride container 2a even when the hydrogen pressure inside the metal hydride container 2a fluctuates.
8, 19 and 22 are switched.
以下、高温熱媒７の温度が変動する場合を例に
とり、これを具体的に説明する。 Hereinafter, a case in which the temperature of the high-temperature heating medium 7 fluctuates will be taken as an example and this will be specifically explained.
第３図は、熱利用過程における高温熱媒７の温
度の典型的な経時変化を示したものである。高温
熱媒７の温度が90℃程度の場合（第３図中）、
開閉弁１８，１９を開、開閉弁２２を閉として、
第２図中のＡ点よりＢ点に示す如く、金属水素化
物容器１ａより金属水素化物容器２ａに水素配管
１７ａを介して水素が移動する。高温熱媒７の温
度が低下して例えば80℃以下となつた場合（第３
図中）、金属水素化物容器１ａ内の水素圧力は
第２図中Ｇ点に示す如く、金属水素化物容器２ａ
内の水素圧力（第２図中のＢ点）よりも低くなる
ため、そのときの熱媒７の温度を検知して開閉弁
１８が閉、開閉弁１９，２２が開に切り替わるこ
とにより、第２図中Ｆ点よりＢ点に示す如く、金
属水素化物容器２４ａより金属水素化物容器２ａ
に水素が移動する。高温熱媒温度が上昇して例え
ば100℃以上となつた場合（第３図中）、そのと
きの熱媒７の温度を検知して開閉弁１８，１９お
よび２２のいずれもが開に切り替わることによ
り、第２図中Ｅ点よりＢ点およびＥ点よりＦ点に
示す如く、金属水素化物容器１ａより金属水素化
物容器２ａおよび金属水素化物容器２４ａに水素
が移動する。 FIG. 3 shows a typical change over time in the temperature of the high-temperature heating medium 7 during the heat utilization process. When the temperature of the high-temperature heating medium 7 is about 90°C (in Fig. 3),
Opening the on-off valves 18 and 19 and closing the on-off valve 22,
As shown from point A to point B in FIG. 2, hydrogen moves from metal hydride container 1a to metal hydride container 2a via hydrogen pipe 17a. When the temperature of the high-temperature heating medium 7 decreases to, for example, 80°C or less (third
), the hydrogen pressure in the metal hydride container 1a is as shown at point G in FIG.
The temperature of the heating medium 7 at that time is detected and the on-off valve 18 is closed, and the on-off valves 19 and 22 are switched to open. As shown from point F to point B in Figure 2, the metal hydride container 2a is moved from the metal hydride container 24a to the metal hydride container 2a.
Hydrogen moves to. When the high-temperature heating medium temperature rises to, for example, 100°C or more (in Fig. 3), the temperature of the heating medium 7 at that time is detected and all of the on-off valves 18, 19, and 22 are switched to open. As a result, hydrogen moves from the metal hydride container 1a to the metal hydride container 2a and the metal hydride container 24a, as shown from point E to point B and from point E to point F in FIG.
このようにして、熱発生側の高温熱媒７の温度
が変動する場合でも、温度上昇により金属水素化
物容器１ａの水素圧力が通常より上昇した場合は
金属水素化物容器２４ａに圧力上昇分の水素を吸
収させる一方、温度低下により金属水素化物容器
１ａの水素圧力が下降した場合はその下降分の水
素を金属水素化物容器２４ａより放出して補うこ
とにより、常に金属水素化物容器２ａに対して第
２図中Ｂ点で示される熱負荷の必要とする温度レ
ベルに対応する圧力より高い圧力を保持した水素
が供給され、常に、その水素圧力に対応する安定
した温度レベルの熱媒を熱交換器１０ａより外部
の熱負荷に供給することが可能となる。 In this way, even if the temperature of the high-temperature heating medium 7 on the heat generation side fluctuates, if the hydrogen pressure in the metal hydride container 1a increases more than usual due to a rise in temperature, the metal hydride container 24a is charged with hydrogen corresponding to the pressure increase. On the other hand, when the hydrogen pressure in the metal hydride container 1a decreases due to a decrease in temperature, the hydrogen corresponding to the decrease is released from the metal hydride container 24a to compensate, so that the metal hydride container 2a is constantly Hydrogen is supplied at a pressure higher than the pressure corresponding to the temperature level required by the heat load shown at point B in Figure 2, and the heat exchanger is always supplied with a heat medium at a stable temperature level corresponding to the hydrogen pressure. It becomes possible to supply external heat load from 10a.
なお、金属水素化物容器１ａから金属水素化物
容器２ａへの水素移動が終了した場合は、例えば
熱利用側熱媒１４の温度低下を検出して各三方切
替弁６，８，１３，１５，２７を切り替え、か
つ、各開閉弁１８〜２３を熱媒７の温度に応じて
切り替えることにより、上述同様継続した安定し
た温度レベルの熱媒１４を熱負荷に供給すること
ができる。 Note that when the hydrogen transfer from the metal hydride container 1a to the metal hydride container 2a is completed, for example, a decrease in the temperature of the heat utilization side heating medium 14 is detected and the three-way switching valves 6, 8, 13, 15, 27 are activated. By switching the on-off valves 18 to 23 according to the temperature of the heat medium 7, it is possible to supply the heat medium 14 at a continuous and stable temperature level to the heat load as described above.
ところで、以上は熱媒７の温度を検出して各開
閉弁１８〜２３を切替える例について示したが、
各金属水素化物容器１ａ，１ｂに圧力センサを取
り付け容器内部の圧力を外部で検知し、この圧力
変動に応じて各開閉弁１８〜２３の切替制御を行
なうことにより、金属水素化物容器２４ａに熱発
生側から熱利用側に輸送する水素の余剰分を貯
え、不足分を放出して金属水素化物容器２ａに供
給する水素の圧力を一定に保つことができる。こ
れによつて、例えば、熱負荷量が増大して、金属
水素化物容器１ａだけでは十分な水素を金属水素
化物容器２ａに移動できない場合は金属水素化物
容器２４ａからも金属水素化物容器２ａに水素を
移動させて不足分を補うことができ、金属水素化
物容器２ａに対して常に熱負荷量に見合つた水素
を供給することが可能となる。 By the way, although the example above has been shown in which the temperature of the heating medium 7 is detected and each of the on-off valves 18 to 23 is switched,
By attaching a pressure sensor to each metal hydride container 1a, 1b and detecting the pressure inside the container externally, and controlling the switching of each on-off valve 18 to 23 according to this pressure fluctuation, the metal hydride container 24a is heated. The excess hydrogen to be transported from the generation side to the heat utilization side can be stored and the insufficient hydrogen can be released to keep the pressure of hydrogen supplied to the metal hydride container 2a constant. As a result, for example, if the amount of heat load increases and sufficient hydrogen cannot be transferred to the metal hydride container 2a from the metal hydride container 1a alone, hydrogen can be transferred from the metal hydride container 24a to the metal hydride container 2a as well. can be moved to compensate for the shortage, making it possible to always supply hydrogen commensurate with the amount of heat load to the metal hydride container 2a.
なお、上記実施例では、熱発生側金属水素化物
容器１ａ，１ｂおよび熱利用側金属水素化物容器
２ａ，２ｂにそれぞれ２つの熱交換器を設けた例
について示したが、各金属水素化物容器に収納す
る熱交換器は１つのみとし、各熱交換器に切替弁
を介して熱媒あるいは冷却水などを切替え供給す
るようにしてもよい。 In addition, in the above example, an example was shown in which two heat exchangers were provided in the heat generation side metal hydride containers 1a, 1b and the heat utilization side metal hydride containers 2a, 2b, but each metal hydride container was provided with two heat exchangers. Only one heat exchanger may be housed, and the heat medium or cooling water may be selectively supplied to each heat exchanger via a switching valve.
(ト) 発明の効果
以上のように本発明によれば、熱利用側金属水
素化物容器と熱発生側金属水素化物容器との間に
開閉弁を介して設置した水素配管に、更に蓄熱用
金属水素化物容器を開閉弁を介して水素配管を行
ない、これら３種の金属水素化物容器の間で、各
開閉弁を操作することにより水素流路を切り替え
られるようにしたので、熱利用過程において熱発
生側の温度レベルあるいは供給量が熱利用側の負
荷に対して過剰なときは、熱発生側金属水素化物
容器より、蓄熱用金属水素化物容器へも水素を移
動させて過剰な熱を蓄熱し、逆に熱発生側の温度
レベルあるいは供給量が熱利用側の負荷に対して
不足なときは、蓄熱用金属水素化物容器からも熱
利用側金属水素化物容器に水素を移動させて、不
足分を補うことができる。このため、高温熱媒を
供給する熱源が熱量あるいは温度レベルの不安定
なソーラコレクタあるいは工場廃液などであつて
も、常に一定レベルの温度および熱量で熱利用側
に熱輸送することができ、更に、変動の大きい給
湯などの熱負荷に対しても対応できるようにな
り、安定した効率の良い熱輸送装置を実現するこ
とができる。(G) Effects of the Invention As described above, according to the present invention, a heat storage metal is added to the hydrogen pipe installed via an on-off valve between the metal hydride container on the heat utilization side and the metal hydride container on the heat generation side. Hydrogen piping is connected through the hydride container's on-off valve, and the hydrogen flow path can be switched between these three types of metal hydride containers by operating each on-off valve. When the temperature level or supply amount on the heat generation side is excessive compared to the load on the heat utilization side, hydrogen is also transferred from the heat generation side metal hydride container to the heat storage metal hydride container to store excess heat. Conversely, when the temperature level or supply amount on the heat generation side is insufficient for the load on the heat utilization side, hydrogen is transferred from the heat storage metal hydride container to the heat utilization side metal hydride container to compensate for the shortage. can be supplemented. Therefore, even if the heat source that supplies the high-temperature heat medium is a solar collector or factory waste liquid that has unstable heat quantity or temperature level, heat can always be transported to the heat utilization side at a constant level of temperature and heat quantity. , it is now possible to cope with heat loads such as hot water supply that have large fluctuations, and it is possible to realize a stable and efficient heat transport device.
第１図は本発明の一実施例に係る熱輸送装置の
概念構成図、第２図は第１図の熱輸送装置に用い
る金属水素化物容器の平衝特性図、第３図は熱利
用過程において、熱発生側金属水素化物容器内の
熱交換器に供給される高温熱媒の温度変化の一例
を示す時間経過図である。
１…熱輸送ユニツト、１ａ，１ｂ…熱発生側金
属水素化物容器、２…熱再生ユニツト、２ａ，２
ｂ…熱利用側金属水素化物容器、３ａ，３ｂ，４
ａ，４ｂ，１０ａ，１０ｂ，１１ａ，１１ｂ，２
５ａ，２５ｂ…熱交換器、５，１２，２６…金属
水素化物、６，８，１３，１５，２７…三方切替
弁、７，１４，１６…熱媒、９…冷却水、１７
ａ，１７ｂ…水素配管、１８〜２３…開閉弁、２
４ａ，２４ｂ…蓄熱用金属水素化物容器、２８…
冷水。
Fig. 1 is a conceptual configuration diagram of a heat transport device according to an embodiment of the present invention, Fig. 2 is a balance characteristic diagram of a metal hydride container used in the heat transport device of Fig. 1, and Fig. 3 is a heat utilization process. FIG. 3 is a time course diagram showing an example of a temperature change of a high-temperature heating medium supplied to a heat exchanger in a heat-generating metal hydride container in FIG. 1...Heat transport unit, 1a, 1b...Heat generation side metal hydride container, 2...Heat regeneration unit, 2a, 2
b...Heat utilization side metal hydride container, 3a, 3b, 4
a, 4b, 10a, 10b, 11a, 11b, 2
5a, 25b... Heat exchanger, 5, 12, 26... Metal hydride, 6, 8, 13, 15, 27... Three-way switching valve, 7, 14, 16... Heat medium, 9... Cooling water, 17
a, 17b...Hydrogen piping, 18-23...Opening/closing valve, 2
4a, 24b...Metal hydride container for heat storage, 28...
Cold water.
Claims (1)
流すための第１の熱交換器と冷却水源から冷却水
を流すための第２の熱交換器とが金属水素化物を
密封した耐圧容器内部を気密に貫通配置されてな
る２つの金属水素化物容器と、これらの２つの金
属水素化物容器のうち水素輸送側の容器に設けら
れた前記第１の熱交換器を選択して前記熱源から
熱媒を流すように切り替える第１の切替弁と、前
記２つの金属水素化物容器のうち水素貯蔵側の容
器に設けられた前記第２の熱交換器を選択して前
記冷却水を流すように切り替える第２の切替弁
と、 熱利用個所側に配置された、熱負荷へ熱媒を流
すための第３の熱交換器と低質熱源から熱媒を流
すための第４の熱交換器とが金属水素化物を密封
した耐圧容器内部を気密に貫通配置されてなる２
つの金属水素化物容器と、これらの２つの金属水
素化物容器のうち水素貯蔵側の容器に設けられた
前記第３の熱交換器を選択して前記熱負荷へ熱媒
を流すように切替える第３の切替弁と、前記２つ
の金属水素化物容器のうち水素輸送側の容器に設
けられた前記第４の熱交換器を選択して前記低質
熱源から熱媒を流すように切替える第４の切替弁
と、 前記熱発生個所側に設けられた水素輸送側の容
器と前記熱利用個所側に設けられた水素貯蔵側の
容器および前記熱発生個所側に設けられた水素貯
蔵側の容器と前記熱利用個所側に設けられた水素
輸送側の容器をそれぞれ連絡する２本の水素配管
と、 冷水を流して冷却するための第５の熱交換器と
金属水素化物とが密封した耐圧容器内部を気密に
貫通配置され、それぞれ前記２本の水素配管に接
続される２つの蓄熱用金属水素化物容器と、これ
らの２つの蓄熱用金属水素化物容器のうちの前記
熱発生個所側の金属水素化物容器の水素輸送側に
接続する蓄熱用金属水素化物容器の前記第５の熱
交換器を選択して前記冷水を流すように切替える
第５の切替弁と、前記熱発生個所側の高温媒体か
らの熱媒の温度レベルまたは前記熱発生個所側の
金属水素化物容器内水素圧力に応じて前記熱発生
個所側から前記熱利用個所側に輸送する水素が余
剰するとき前記蓄熱用金属水素化物容器に水素を
貯えるように切替える一方、不足するとき前記蓄
熱用金属水素化物容器から取り出すように切替え
る第６の切替弁とを備えたことを特徴とする金属
水素化物を利用した熱輸送装置。[Claims] 1. A first heat exchanger for flowing a heat medium from a heat source and a second heat exchanger for flowing cooling water from a cooling water source, which are disposed on the side of a heat generation location, are made of metal hydrogen. two metal hydride containers arranged airtightly penetrating the inside of the pressure-resistant container in which the chemical compound is sealed; and the first heat exchanger provided in the container on the hydrogen transport side of these two metal hydride containers. the first switching valve that selectively switches the heat medium to flow from the heat source; and the second heat exchanger provided in the hydrogen storage side of the two metal hydride containers; A second switching valve for switching the flow of cooling water, a third heat exchanger for flowing the heat medium to the heat load, and a fourth heat exchanger for flowing the heat medium from the low-quality heat source, which are arranged on the heat utilization side. A heat exchanger is disposed airtightly penetrating the inside of the pressure-resistant container in which the metal hydride is sealed.
a third metal hydride container, and a third heat exchanger provided in a container on the hydrogen storage side of these two metal hydride containers is selected and switched to flow a heat medium to the heat load. and a fourth switching valve that selects the fourth heat exchanger provided in the hydrogen transport side of the two metal hydride containers and switches the heat medium to flow from the low-quality heat source. A container on the hydrogen transport side provided on the side of the heat generation location, a container on the hydrogen storage side provided on the side of the heat utilization location, a container on the hydrogen storage side provided on the side of the heat generation location, and the hydrogen storage container provided on the side of the heat utilization location. Two hydrogen pipes connecting the hydrogen transport containers installed at each location, a fifth heat exchanger for cooling by flowing cold water, and a metal hydride make the inside of the sealed pressure container airtight. two heat storage metal hydride containers that are arranged through each other and connected to the two hydrogen pipes, and hydrogen in the metal hydride container on the heat generation side of these two heat storage metal hydride containers. a fifth switching valve that selects the fifth heat exchanger of the heat storage metal hydride container connected to the transport side and switches the cold water to flow therethrough; Hydrogen is stored in the heat storage metal hydride container when there is surplus hydrogen to be transported from the heat generation location to the heat utilization location depending on the temperature level or the hydrogen pressure in the metal hydride container on the heat generation location side. and a sixth switching valve that switches to take out the heat storage metal hydride container when the heat storage metal hydride container runs out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61028982A JPS62190392A (en) | 1986-02-14 | 1986-02-14 | Heat transporting system utilizing metallic hydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61028982A JPS62190392A (en) | 1986-02-14 | 1986-02-14 | Heat transporting system utilizing metallic hydride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62190392A JPS62190392A (en) | 1987-08-20 |
| JPH0477222B2 true JPH0477222B2 (en) | 1992-12-07 |
Family
ID=12263621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61028982A Granted JPS62190392A (en) | 1986-02-14 | 1986-02-14 | Heat transporting system utilizing metallic hydride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62190392A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6135167B2 (en) * | 2013-02-13 | 2017-05-31 | 株式会社豊田中央研究所 | Regenerator structure, chemical heat storage system |
-
1986
- 1986-02-14 JP JP61028982A patent/JPS62190392A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62190392A (en) | 1987-08-20 |
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