JP2876764B2 - Hydrogen storage heat pump - Google Patents
Hydrogen storage heat pumpInfo
- Publication number
- JP2876764B2 JP2876764B2 JP26069990A JP26069990A JP2876764B2 JP 2876764 B2 JP2876764 B2 JP 2876764B2 JP 26069990 A JP26069990 A JP 26069990A JP 26069990 A JP26069990 A JP 26069990A JP 2876764 B2 JP2876764 B2 JP 2876764B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heat exchanger
- hydrogen
- hydrogen storage
- 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.)
- Expired - Fee Related
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 179
- 239000001257 hydrogen Substances 0.000 title claims description 172
- 229910052739 hydrogen Inorganic materials 0.000 title claims description 172
- 238000010521 absorption reaction Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 20
- 230000005855 radiation Effects 0.000 claims description 19
- 238000005338 heat storage Methods 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims 1
- 239000012267 brine Substances 0.000 description 47
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 47
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910018007 MmNi Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、熱輸送能力の変動が少ない水素吸蔵ヒート
ポンプに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a hydrogen storage heat pump having a small variation in heat transport capacity.
［従来の技術］ 特開昭62−194164号公報は、水素吸蔵合金を有し空気
と熱交換する一対の水素吸蔵熱交換器と、圧縮機及び四
方弁を有し両熱交換器間で水素を往復させる水素圧送管
路部とを備える水素吸蔵ヒートポンプ型式の空調装置を
開示する。[Prior Art] Japanese Patent Application Laid-Open No. Sho 62-194164 discloses a pair of hydrogen storage heat exchangers having a hydrogen storage alloy and exchanging heat with air, and a compressor and a four-way valve. A hydrogen storage heat pump type air-conditioning apparatus including a hydrogen pumping pipeline for reciprocating water is disclosed.
この装置では、上記水素往復により両熱交換器はそれ
ぞれ吸熱、放熱を繰返し、結果、両熱交換器から出る低
温空気及び高温空気の一方は室内に供給され、他方は大
気中に排出される。In this device, both heat exchangers repeatedly absorb and release heat by the above-mentioned hydrogen reciprocation, and as a result, one of the low-temperature air and the high-temperature air exiting from both heat exchangers is supplied to the room, and the other is discharged to the atmosphere.
特開昭62−294868号公報は、水素吸蔵合金を有する二
対の水素吸蔵熱交換器を設け、圧縮機により各水素吸蔵
熱交換器対が相互に異なる位相で水素を往復させる水素
吸蔵ヒートポンプを開示する。そして、この装置では、
水素放出側の２個の水素吸蔵熱交換器と吸熱側熱交換器
との間でブラインを循環させ、同じく水素吸収側の２個
の水素吸蔵熱交換器と放熱側熱交換器との間でブライン
を循環させて、熱輸送を実施する。JP-A-62-294868 discloses a hydrogen storage heat pump in which two pairs of hydrogen storage heat exchangers each having a hydrogen storage alloy are provided, and each of the pairs of hydrogen storage heat exchangers reciprocates hydrogen with a different phase by a compressor. Disclose. And in this device,
The brine is circulated between the two hydrogen storage heat exchangers on the hydrogen release side and the heat absorption side heat exchanger, and between the two hydrogen storage heat exchangers on the hydrogen absorption side and the heat radiation side heat exchanger. The brine is circulated to carry out heat transport.
この装置では二対の水素吸蔵熱交換器の熱輸送ピーク
が位相差（時間差）をもつので、総合した熱輸送波形の
変動を抑圧できる。In this apparatus, since the heat transport peaks of the two pairs of hydrogen storage heat exchangers have a phase difference (time difference), fluctuations in the overall heat transport waveform can be suppressed.
［発明が解決しようとする課題］ しかしながら上記した一対の水素吸蔵熱交換器をもつ
水素吸蔵ヒートポンプは、水素及び空気を切換える度に
水素形の熱容量等の影響などにより熱輸送能力すなわち
吸熱及び放熱能力が低下し、その結果として熱輸送能力
が大きく変動する不具合がある。[Problems to be Solved by the Invention] However, the hydrogen storage heat pump having the above-described pair of hydrogen storage heat exchangers has a heat transport capability, that is, heat absorption and heat radiation capability, due to the heat capacity of the hydrogen form and the like each time hydrogen and air are switched. And as a result, the heat transport capability fluctuates greatly.
一方、上記した二対の水素吸蔵熱交換器をもつ水素吸
蔵ヒートポンプは、熱輸送能力の変動を縮小できるもの
の、水素吸蔵熱交換器の増設を必要とし、更に構造が複
雑化するので実用性に欠ける難がある。On the other hand, a hydrogen storage heat pump having the two pairs of hydrogen storage heat exchangers described above can reduce fluctuations in heat transport capacity, but requires additional hydrogen storage heat exchangers, and further complicates the structure. There is lacking difficulty.
本発明はこのような問題に鑑みなされたものであり、
構成の複雑化をできるだけ回避しつつ、熱輸送能力の変
動を抑止できる水素吸蔵ヒートポンプを提供することを
その解決すべき課題としている。The present invention has been made in view of such a problem,
It is an object of the present invention to provide a hydrogen storage heat pump capable of suppressing fluctuations in heat transport capability while minimizing the complexity of the configuration.
［課題を解決するための手段］ 本発明の水素吸蔵ヒートポンプは、水素吸蔵合金を有
する一対の水素吸蔵熱交換器と、該両水素吸蔵熱交換器
間で水素を往復させる水素圧送管路部と、吸熱側熱交換
器及び放熱側熱交換器と、循環ポンプを有して水素放出
側の上記水素吸蔵熱交換器及び上記吸熱側熱交換器の間
で熱流体を循環させる吸熱配管部と、循環ポンプを有し
て水素吸収側の上記水素吸蔵熱交換器及び上記放熱側熱
交換器の間で熱流体を循環させる放熱配管部と、上記吸
熱配管部または放熱配管部に設けられて上記水素吸蔵熱
交換器を迂回して上記熱流体を循環させる水素吸蔵熱交
換器バイパス手段とを備え、上記水素吸蔵熱交換器バイ
パス手段は、上記両水素吸蔵熱交換器間における水素流
通方向の切換による熱輸送能低下期間に上記循環ポンプ
により上記水素吸蔵熱交換器を介することなく上記吸熱
側熱交換器及び上記吸熱配管部に、又は、上記放熱側熱
交換器及び放熱配管部内に上記熱流体を循環させること
を特徴としている。[Means for Solving the Problems] A hydrogen storage heat pump according to the present invention includes a pair of hydrogen storage heat exchangers having a hydrogen storage alloy, and a hydrogen pressure pipe line for reciprocating hydrogen between the two hydrogen storage heat exchangers. A heat-absorbing heat exchanger and a heat-dissipating heat exchanger, and a heat-absorbing pipe section that has a circulation pump and circulates a heat fluid between the hydrogen-absorbing heat exchanger and the heat-absorbing heat exchanger on the hydrogen releasing side. A heat-dissipating pipe section having a circulation pump for circulating a heat fluid between the hydrogen-absorbing heat exchanger on the hydrogen-absorbing side and the heat-dissipating-side heat exchanger; and the hydrogen provided on the heat-absorbing pipe section or the heat-dissipating pipe section. Hydrogen storage heat exchanger bypass means for bypassing the storage heat exchanger and circulating the heat fluid, wherein the hydrogen storage heat exchanger bypass means is provided by switching a hydrogen flow direction between the two hydrogen storage heat exchangers. Above during the period of reduced heat transport capacity The heat fluid is circulated by the circulation pump to the heat-absorbing heat exchanger and the heat-absorbing pipe without passing through the hydrogen-absorbing heat exchanger, or to the heat-radiating heat exchanger and the heat-radiating pipe. .
また、本発明の水素吸蔵ヒートポンプは好適な態様に
おいて、上記吸熱配管部または放熱配管部に冷熱または
温熱を蓄積する蓄熱器を有し、上記水素吸蔵熱交換器バ
イパス手段は、上記両水素吸蔵熱交換器間における水素
流通方向の切換による熱輸送能低下期間に上記循環ポン
プにより上記水素吸蔵熱交換器を介することなく上記吸
熱側熱交換器、上記蓄熱器及び上記吸熱配管部に、又
は、上記放熱側熱交換器、上記蓄熱器及び放熱配管部内
に上記熱流体を循環させることを特徴としている。In a preferred embodiment, the hydrogen storage heat pump of the present invention has a heat storage unit for accumulating cold or warm heat in the heat absorption pipe portion or the heat radiation pipe portion, and the hydrogen storage heat exchanger bypass means includes the both hydrogen storage heat pumps. The heat absorption side heat exchanger, the heat storage device and the heat absorption pipe portion without the circulation pump passing through the hydrogen storage heat exchanger during the heat transfer capability reduction period due to the switching of the hydrogen flow direction between the exchangers, or The heat fluid is circulated in the heat radiation side heat exchanger, the heat storage device, and the heat radiation pipe portion.
［作用］ 本発明の水素吸蔵ヒートポンプにおいて、水素圧送管
路部は水素流通経路の切換により一対の水素吸蔵熱交換
器の間で水素を往復させる。水素を吸収する水素吸蔵熱
交換器は放熱し、水素を放出する水素吸蔵熱交換器は吸
熱する。吸熱側熱交換器は吸熱対象から吸熱し、吸熱配
管部は吸熱側熱交換器から水素放出側の水素吸蔵熱交換
器に熱輸送する。放熱配管部は水素吸収側の水素吸蔵熱
交換器から放熱側熱交換器に熱輸送し、放熱側熱交換器
は放熱対象に放熱する。[Operation] In the hydrogen storage heat pump of the present invention, the hydrogen pumping pipeline reciprocates hydrogen between the pair of hydrogen storage heat exchangers by switching the hydrogen flow path. The hydrogen storage heat exchanger that absorbs hydrogen radiates heat, and the hydrogen storage heat exchanger that releases hydrogen absorbs heat. The heat-absorbing heat exchanger absorbs heat from the heat-absorbing object, and the heat-absorbing piping transfers heat from the heat-absorbing heat exchanger to the hydrogen-absorbing heat exchanger on the hydrogen releasing side. The heat radiating pipe portion transfers heat from the hydrogen storage heat exchanger on the hydrogen absorbing side to the heat radiating heat exchanger, and the heat radiating heat exchanger radiates heat to the heat radiating object.
特に、本発明では、水素吸蔵熱交換器と熱利用側の熱
交換器との間で循環ポンプにより熱流体を循環させると
ともに、両水素吸蔵熱交換器間における水素流通方向の
切換期間に水素吸蔵熱交換器をバイパスするように熱流
体を循環させることにより、配管部やその内部の熱流体
の熱を熱利用側の熱交換器に輸送する。In particular, in the present invention, the heat fluid is circulated by the circulation pump between the hydrogen storage heat exchanger and the heat utilization side heat exchanger, and the hydrogen storage direction is switched between the two hydrogen storage heat exchangers during the switching period of the hydrogen flow direction. By circulating the heat fluid so as to bypass the heat exchanger, the heat of the heat fluid in the pipe section and the inside thereof is transported to the heat exchanger on the heat utilization side.
更に、好適な態様では、蓄熱器を熱利用側の配管部に
介設するので、この蓄熱器の熱も上記切換期間に熱利用
側の熱交換器に輸送される。Further, in a preferred aspect, since the heat storage device is provided in the pipe portion on the heat use side, the heat of the heat storage device is also transferred to the heat use side heat exchanger during the switching period.
このようにすれば、ある程度の運転時間経過後には、
熱流体を含む吸熱側熱交換器及び吸熱配管部はある平均
温度範囲内に冷却され、放熱側熱交換器及び放熱配管部
はある平均温度範囲内に加熱されているために、両水素
吸蔵熱交換器間の水素流通方向の切換時に配管部及びそ
の内部の熱流体の顕熱、更に好適には配管部に介設され
た蓄熱器が有する熱により熱交換器の加熱または冷却を
持続する。そして、水素流通方向を切換えて一定時間が
経過し、水素を吸収する水素吸蔵熱交換器が十分高温と
なり、水素を放出する水素吸蔵熱交換器が十分低温とな
ると、上記水素吸蔵熱交換器バイパス手段はバイパスを
解除し、それにより、両水素吸蔵熱交換器から吸熱側熱
交換器及び放熱側熱交換器に個別に熱輸送が再開され
る。In this way, after a certain amount of driving time,
Since the heat-absorbing heat exchanger and heat-absorbing pipe section containing the heat fluid are cooled within a certain average temperature range, and the heat-radiating heat exchanger and the heat radiating pipe section are heated within a certain average temperature range, both hydrogen storage heat Heating or cooling of the heat exchanger is maintained by the sensible heat of the pipe portion and the heat fluid therein, more preferably the heat of the regenerator provided in the pipe portion, when switching the hydrogen flow direction between the exchangers. When a certain period of time elapses after switching the hydrogen flow direction, the temperature of the hydrogen storage heat exchanger that absorbs hydrogen becomes sufficiently high, and the temperature of the hydrogen storage heat exchanger that releases hydrogen becomes sufficiently low. The means releases the bypass, whereby heat transfer is resumed separately from both hydrogen storage heat exchangers to the endothermic heat exchanger and the radiating heat exchanger.
［実施例］ （実施例１） 本発明の水素吸蔵ヒートポンプの一実施例を、第１図
により説明する。Example (Example 1) An example of the hydrogen storage heat pump of the present invention will be described with reference to FIG.
この装置は、水素吸蔵合金が充填される一対の水素吸
蔵熱交換器１、２を有しており、水素吸蔵熱交換器１、
２はそれぞれ水素吸蔵合金（MmNi5）の粉末が充填され
水素ガスが出入可能な通気孔付きの密閉容器（図示せ
ず）を有する。この密閉容器の周囲にはブライン（本発
明でいう熱流体）が流れるパイプ（図示せず）が巻着さ
れており、また、水素吸蔵熱交換器１、２は、圧縮機３
及び水素配管により水素往復可能に連結されている。This device has a pair of hydrogen storage heat exchangers 1 and 2 filled with a hydrogen storage alloy.
Reference numeral 2 denotes a sealed container (not shown) having a vent hole through which a hydrogen storage alloy (MmNi 5 ) powder is filled and through which hydrogen gas can enter and exit. A pipe (not shown) through which brine (thermal fluid in the present invention) flows is wound around the closed container, and the hydrogen storage heat exchangers 1 and 2 are
And a hydrogen pipe so as to be able to reciprocate hydrogen.
すなわち、圧縮機３の吸入口と水素吸蔵熱交換器１、
２とは二方弁31、32を介して個別に管路接続されてい
る。また、圧縮機30の吐出口と水素吸蔵熱交換器１、２
とは二方弁33、34を介して個別に管路接続されている。
圧縮機３、二方弁31〜34、及びそれらを連結する水素配
管は本発明でいう水素圧送管路部を構成している。That is, the inlet of the compressor 3 and the hydrogen storage heat exchanger 1,
2 is individually connected to the pipeline via two-way valves 31 and 32. Further, the discharge port of the compressor 30 and the hydrogen storage heat exchangers 1 and 2
Are individually connected to the pipeline via two-way valves 33 and 34.
The compressor 3, the two-way valves 31 to 34, and the hydrogen pipe connecting them constitute a hydrogen pumping pipe section referred to in the present invention.
上記した水素吸蔵熱交換器１に巻着されたパイプの一
端は配管1a及び二方弁61、62を介して吸熱側熱交換器４
及び放熱側熱交換器５のブライン流入口に連結され、上
記パイプの他端は配管1b及び二方弁63、64を介してブラ
イン循環ポンプ７、８の吐出口に接続されている。One end of the pipe wound around the hydrogen storage heat exchanger 1 is connected to the heat absorption side heat exchanger 4 via the pipe 1a and the two-way valves 61 and 62.
The other end of the pipe is connected to the discharge ports of the brine circulation pumps 7 and 8 via the pipe 1b and the two-way valves 63 and 64.
同様に、水素吸蔵熱交換器２に巻着されたパイプの一
端は配管2a及び二方弁65、66を介して吸熱側熱交換器４
及び放熱側熱交換器５のブライン流入口に連結され、上
記パイプの他端は配管2b及び二方弁67、68を介してブラ
イン循環ポンプ７、８の吐出口に接続されている。Similarly, one end of the pipe wound around the hydrogen storage heat exchanger 2 is connected to the heat absorption side heat exchanger 4 via the pipe 2a and the two-way valves 65 and 66.
The other end of the pipe is connected to the discharge ports of the brine circulation pumps 7 and 8 via the pipe 2b and the two-way valves 67 and 68.
ブライン循環ポンプ７の吸入口は、蓄熱器9aを介して
吸熱側熱交換器４のブライン流出口に連結され、ブライ
ン循環ポンプ８の吸入口は、蓄熱器9bを介して放熱側熱
交換器５のブライン流出口に連結されている。The suction port of the brine circulation pump 7 is connected to the brine outlet of the heat absorption side heat exchanger 4 via the heat storage device 9a, and the suction port of the brine circulation pump 8 is connected to the heat radiation side heat exchanger 5 via the heat storage device 9b. Connected to the brine outlet.
ここで、二方弁61、63、65、67及びそれらと吸熱側熱
交換器４との間のブライン配管は本発明でいう吸熱配管
部を構成し、同様に、二方弁62、64、66、68及びそれら
と放熱側熱交換器５との間のブライン配管は本発明でい
う放熱配管部を構成している。なお、ここでは冷房モー
ドであって吸熱側熱交換器４が室内側、放熱側熱交換器
５が室外側とするが、暖房時には二方弁61〜68の切換に
より容易に室内側の吸熱側熱交換器４を放熱側熱交換器
として、室外側の放熱側熱交換器５を吸熱側熱交換器と
して作動させ得ることはもちろんである。Here, the two-way valves 61, 63, 65, 67 and the brine pipe between them and the heat-absorbing heat exchanger 4 constitute a heat-absorbing pipe section according to the present invention, and similarly, the two-way valves 62, 64, The 66 and 68 and the brine pipe between them and the heat-radiation-side heat exchanger 5 constitute a heat-radiation pipe portion in the present invention. Here, in the cooling mode, the heat absorbing side heat exchanger 4 is located indoors and the heat radiating side heat exchanger 5 is located outdoors. However, during heating, the heat absorbing side of the indoor side is easily switched by switching the two-way valves 61 to 68. Needless to say, the heat exchanger 4 can be operated as a heat radiation side heat exchanger, and the heat radiation side heat exchanger 5 on the outdoor side can be operated as a heat absorption side heat exchanger.
また、ブライン配管1a、1bは水素吸蔵熱交換器１をバ
イパスするべくバイパス弁6aを通じて連結されており、
ブライン配管2a、2bは水素吸蔵熱交換器２をバイパスす
るべくバイパス弁6bを通じて連結されている。更にブラ
イン配管1bにはバイパス弁6aの下流側かつ水素吸熱交換
器１の上流側において二方弁6cが設けられ、同様に、ブ
ライン配管2bにはバイパス弁6bの下流側かつ水素吸熱交
換器２の上流側において二方弁6cが設けられている。Further, the brine pipes 1a and 1b are connected through a bypass valve 6a to bypass the hydrogen storage heat exchanger 1,
The brine pipes 2a and 2b are connected through a bypass valve 6b to bypass the hydrogen storage heat exchanger 2. Further, a two-way valve 6c is provided in the brine pipe 1b on the downstream side of the bypass valve 6a and on the upstream side of the hydrogen heat exchanger 1. Similarly, the brine pipe 2b is provided on the downstream side of the bypass valve 6b and in the hydrogen heat exchanger 2. A two-way valve 6c is provided on the upstream side of.
これらバイパス弁6a、6b及び二方弁6c、6dは本発明で
いう分離手段を構成している。The bypass valves 6a, 6b and the two-way valves 6c, 6d constitute a separating means according to the present invention.
更に、水素吸蔵熱交換器１の水素出入口付近に温度セ
ンサ11が設けられ、同様に、水素吸蔵熱交換器２の水素
出入口付近に温度センサ12が設けられている。そして、
これら温度センサ11、12の出力信号V11、V12は第２図及
び第３図の回路に送られ、二方弁61〜68及びバイパス弁
6a、6bが切換えられる。Further, a temperature sensor 11 is provided near the hydrogen inlet / outlet of the hydrogen storage heat exchanger 1, and a temperature sensor 12 is similarly provided near the hydrogen inlet / outlet of the hydrogen storage heat exchanger 2. And
The output signals V11 and V12 of these temperature sensors 11 and 12 are sent to the circuits of FIG. 2 and FIG. 3, and the two-way valves 61 to 68 and the bypass valves
6a and 6b are switched.
なお、上記蓄熱器9a、9bはブラインを貯溜するタンク
からなる。The regenerators 9a and 9b include tanks for storing brine.
次に、この装置の動作を説明する。 Next, the operation of this device will be described.
まず水素往復について説明する。最後に水素吸蔵熱交
換器１に水素が貯溜されており、二方弁31、34は開、二
方弁32、33は閉状態にある。かかる状態において圧縮機
３の運転により水素吸蔵熱交換器１から水素吸蔵熱交換
器２に水素ガスが圧送されると、水素を放出する水素吸
蔵熱交換器１はブラインから吸熱し、水素を吸収する水
素吸蔵熱交換器２はブラインに放熱する。First, hydrogen reciprocation will be described. Finally, hydrogen is stored in the hydrogen storage heat exchanger 1, and the two-way valves 31, 34 are open and the two-way valves 32, 33 are closed. In this state, when hydrogen gas is pumped from the hydrogen storage heat exchanger 1 to the hydrogen storage heat exchanger 2 by the operation of the compressor 3, the hydrogen storage heat exchanger 1 that releases hydrogen absorbs heat from the brine and absorbs hydrogen. The hydrogen storage heat exchanger 2 radiates heat to the brine.
水素吸蔵熱交換器１が所定時間、水素ガスを放出した
後、圧縮機３を停止し、二方弁31、32を開、二方弁33、
34を閉状態に切換えれば、大量に水素を吸蔵する水素吸
蔵熱交換器２中の水素ガス圧力が高いので、水素吸蔵熱
交換器２から水素吸蔵熱交換器１に水素ガスが流れ、そ
の結果、水素吸蔵熱交換器２はブラインから吸熱し、水
素を吸収する水素吸蔵熱交換器１はブラインに放熱す
る。After the hydrogen storage heat exchanger 1 releases hydrogen gas for a predetermined time, the compressor 3 is stopped, the two-way valves 31 and 32 are opened, and the two-way valves 33 and
When the valve 34 is switched to the closed state, the hydrogen gas pressure in the hydrogen storage heat exchanger 2 for storing a large amount of hydrogen is high, so that hydrogen gas flows from the hydrogen storage heat exchanger 2 to the hydrogen storage heat exchanger 1, As a result, the hydrogen storage heat exchanger 2 absorbs heat from the brine, and the hydrogen storage heat exchanger 1 that absorbs hydrogen dissipates heat to the brine.
水素吸蔵熱交換器１、２の圧力差が一定レベル以下に
なれば、さらに二方弁31、34を閉、二方弁32、33を開状
態に切換えて圧縮機３を運転する。その結果、水素吸蔵
熱交換器２から水素吸蔵熱交換器１に水素ガスを継続し
て圧送され、水素を放出する水素吸蔵熱交換器２はブラ
インから吸熱し、水素を吸収する水素吸蔵熱交換器１は
ブラインに放熱する。When the pressure difference between the hydrogen storage heat exchangers 1 and 2 falls below a certain level, the compressor 3 is operated by further closing the two-way valves 31 and 34 and switching the two-way valves 32 and 33 to the open state. As a result, the hydrogen storage heat exchanger 2 continuously pumping hydrogen gas from the hydrogen storage heat exchanger 2 to the hydrogen storage heat exchanger 1 and releasing hydrogen absorbs heat from the brine and absorbs hydrogen. The vessel 1 radiates heat to the brine.
水素吸蔵熱交換器２が所定時間、水素ガスを放出した
後、圧縮機３を停止し、再度二方弁31、32を開、二方弁
33、34を閉状態に切換えれば、大量に水素を吸蔵する水
素吸蔵熱交換器１中の水素ガス圧力が高いので、水素吸
蔵熱交換器１から水素吸蔵熱交換器２に水素ガスが流
れ、その結果、水素吸蔵熱交換器１はブラインから吸熱
し、水素を吸収する水素吸蔵熱交換器２はブラインに放
熱する。After the hydrogen storage heat exchanger 2 releases hydrogen gas for a predetermined time, the compressor 3 is stopped, and the two-way valves 31 and 32 are opened again, and the two-way valve is opened.
If the switches 33 and 34 are switched to the closed state, the hydrogen gas pressure in the hydrogen storage heat exchanger 1 for storing a large amount of hydrogen is high, so that hydrogen gas flows from the hydrogen storage heat exchanger 1 to the hydrogen storage heat exchanger 2. As a result, the hydrogen storage heat exchanger 1 absorbs heat from the brine, and the hydrogen storage heat exchanger 2 that absorbs hydrogen releases the heat to the brine.
このようにして水素ガスの一往復（１サイクル）が完
了するが、以下このサイクルを繰返すことにより、水素
吸蔵熱交換器１から出るブラインは一定周期で加熱、冷
却される。One reciprocation (one cycle) of the hydrogen gas is completed in this way, but by repeating this cycle, the brine discharged from the hydrogen storage heat exchanger 1 is heated and cooled at a constant cycle.
なお、このサイクル運転における二方弁31〜34の切換
及び圧縮機３の継続運転は全てタイマにより一定時間毎
に定周期制御すればよいので、それ以上の説明は省略す
る。Note that the switching of the two-way valves 31 to 34 and the continuous operation of the compressor 3 in this cycle operation may all be controlled by a timer at regular intervals, so that further description is omitted.
水素配管系の熱容量などのために、水素吸蔵熱交換器
１、２の温度は例えば第４図（ａ）のようになる。Due to the heat capacity of the hydrogen piping system, the temperatures of the hydrogen storage heat exchangers 1 and 2 are as shown in FIG. 4 (a), for example.
次に、吸熱側熱交換器４に常に冷却ブラインを循環さ
せる吸熱配管部、及び、放熱側熱交換器５に常に加熱ブ
ラインを循環させる放熱配管部の作動について説明す
る。Next, the operation of the heat-absorbing pipe section that constantly circulates the cooling brine through the heat-absorbing heat exchanger 4 and the heat-radiating pipe section that constantly circulates the heated brine through the heat-radiating heat exchanger 5 will be described.
温度センサ11、12の出力信号V11、V12は第２図に示す
コンパレータ100に送られ、コンパレータ100はV11がV12
より大きい場合（すなわち、水素吸蔵熱交換器１が水素
吸蔵熱交換器２より高温の場合）にローレベル、V12がV
11より大きい場合（すなわち、水素吸蔵熱交換器２が水
素吸蔵熱交換器１より高温の場合）にハイレベルとな
る。したがって、トランジスタ101〜104はV12がより大
きい場合にオンし、逆にインバータ105の出力反転によ
りトランジスタ106〜109はV11がより大きい場合にオン
する。The output signals V11 and V12 of the temperature sensors 11 and 12 are sent to a comparator 100 shown in FIG.
If it is larger than (ie, the hydrogen storage heat exchanger 1 is higher in temperature than the hydrogen storage heat exchanger 2), the low level
When it is larger than 11, that is, when the temperature of the hydrogen storage heat exchanger 2 is higher than that of the hydrogen storage heat exchanger 1, the level becomes high. Therefore, the transistors 101 to 104 are turned on when V12 is larger, and conversely, the transistors 106 to 109 are turned on when V11 is larger due to the inversion of the output of the inverter 105.
その結果、水素吸蔵熱交換器２の温度が水素吸蔵熱交
換器１の温度より高い場合（V12＞V11）に、ソレノイド
バルブである二方弁61、63、66、68が開き、二方弁62、
64、65、67が閉じる。よって、ブライン循環ポンプ７は
水素吸蔵熱交換器１、吸熱側熱交換器４、蓄熱器9aに低
温ブラインを循環させ、ブライン循環ポンプ８は水素吸
蔵熱交換器２、放熱側熱交換器５、蓄熱器9bに高温ブラ
インを循環させる。As a result, when the temperature of the hydrogen storage heat exchanger 2 is higher than the temperature of the hydrogen storage heat exchanger 1 (V12> V11), the two-way valves 61, 63, 66, and 68, which are solenoid valves, open, and the two-way valve 62,
64, 65 and 67 close. Therefore, the brine circulation pump 7 circulates the low-temperature brine through the hydrogen storage heat exchanger 1, the heat absorption side heat exchanger 4, and the heat storage 9a, and the brine circulation pump 8 performs the hydrogen storage heat exchanger 2, the heat radiation side heat exchanger 5, High temperature brine is circulated through the regenerator 9b.
また、水素吸蔵熱交換器２の温度が水素吸蔵熱交換器
１の温度より低い場合（V11＞V12）に、二方弁61、63、
66、68が閉じ、二方弁62、64、65、67が開く。よって、
ブライン循環ポンプ７は水素吸蔵熱交換器２、吸熱側熱
交換器４、蓄熱器9aに低温ブラインを循環させ、ブライ
ン循環ポンプ８は水素吸蔵熱交換器１、放熱側熱交換器
５、蓄熱器9bに高温ブラインを循環させる。When the temperature of the hydrogen storage heat exchanger 2 is lower than the temperature of the hydrogen storage heat exchanger 1 (V11> V12), the two-way valves 61, 63,
66 and 68 are closed, and the two-way valves 62, 64, 65 and 67 are opened. Therefore,
The brine circulation pump 7 circulates low-temperature brine through the hydrogen storage heat exchanger 2, the heat absorption side heat exchanger 4, and the regenerator 9a, and the brine circulation pump 8 performs hydrogen storage heat exchanger 1, the heat radiation side heat exchanger 5, and the heat storage unit. Circulate hot brine through 9b.
これらの結果として、吸熱側熱交換器４には常時、低
温ブラインが供給され、放熱側熱交換器５には常時、高
温ブラインが供給される。As a result, the heat-absorption-side heat exchanger 4 is always supplied with low-temperature brine, and the heat-radiation-side heat exchanger 5 is always supplied with high-temperature brine.
蓄熱器9aは、上記した動作切換時間帯において低温ブ
ラインから吸熱し、切換時刻から離れた時間帯において
低温ブラインに放熱する。同様に、蓄熱器9bは、上記し
た動作切換時間帯において高温ブラインに放熱し、切換
時刻から離れた時間帯において高温ブラインから吸熱す
る。以上の結果として、ブライン温度の変動が抑止され
るので、吸熱側熱交換器（室内機）４の冷却能力（すな
わち、低温ブラインの温度）の変動は低減される。The heat storage unit 9a absorbs heat from the low-temperature brine during the operation switching time period and releases heat to the low-temperature brine during the time period apart from the switching time. Similarly, the heat storage unit 9b radiates heat to the high-temperature brine during the operation switching time period and absorbs heat from the high-temperature brine during the time period apart from the switching time. As a result, the fluctuation of the brine temperature is suppressed, and the fluctuation of the cooling capacity (that is, the temperature of the low-temperature brine) of the endothermic heat exchanger (indoor unit) 4 is reduced.
次に、バイパス弁6a、6b及び二方弁6c、6dの切換動作
を第３図の制御回路で説明する。Next, the switching operation of the bypass valves 6a and 6b and the two-way valves 6c and 6d will be described with reference to the control circuit of FIG.
コンパレータ100（第２図参照）から出力される二値
信号はモノマルチバイブレータ110に入力され、インバ
ータ105（第２図参照）から出力される二値信号はモノ
マルチバイブレータ111に入力される。その結果、モノ
マルチバイブレータ110はV12がV11より大きくなった時
点から一定期間ハイレベルとなり、モノマルチバイブレ
ータ111はV11がV12より大きくなった時点から一定期間
ハイレベルとなる。モノマルチバイブレータ110、111は
オア回路112を介してドライバトランジスタ113、114を
駆動する。すなわち、モノマルチバイブレータ110、111
がハイレベルとなると（すなわち、V11がV12より高温に
なった時点及びV12がV11より高温になった時点からそれ
ぞれ一定期間だけ）、ドライバトランジスタ113、114
は、それぞれソレノイドバルブであるバイパス弁6a、6b
を開き、ドライバトランジスタ115、116はソレノイドバ
ルブである二方弁6c、6dを閉じる。The binary signal output from the comparator 100 (see FIG. 2) is input to a monomultivibrator 110, and the binary signal output from the inverter 105 (see FIG. 2) is input to a monomultivibrator 111. As a result, the mono-multi vibrator 110 is at a high level for a certain period from the time when V12 becomes larger than V11, and the mono-multivibrator 111 is at a high level for a certain period after V11 becomes larger than V12. The mono multivibrators 110 and 111 drive the driver transistors 113 and 114 via the OR circuit 112. That is, mono-multi vibrators 110 and 111
Becomes high level (that is, for a certain period from the time when V11 becomes higher than V12 and the time when V12 becomes higher than V11, respectively), the driver transistors 113, 114
Are bypass valves 6a and 6b, which are solenoid valves, respectively.
And the driver transistors 115 and 116 close the two-way valves 6c and 6d, which are solenoid valves.
その結果、水素流通方向を切換えた直後（水素吸蔵熱
交換器１、２の温度がほぼ同程度である期間）の一定期
間、ブラインはバイパス弁6a、6bを通過するので、水素
吸蔵熱交換器１、２にはブラインが流れず、その結果、
水素吸蔵熱交換器１、２により吸熱熱交換器４が加熱さ
れ、放熱熱交換器５が冷却されることがない。As a result, the brine passes through the bypass valves 6a and 6b for a certain period immediately after switching the hydrogen flow direction (period when the temperatures of the hydrogen storage heat exchangers 1 and 2 are almost the same). No brine flows to 1 and 2, and as a result,
The heat absorption heat exchanger 4 is heated by the hydrogen storage heat exchangers 1 and 2, and the heat radiation heat exchanger 5 is not cooled.
第４図（ｂ）にバイパス弁6a、6bを設けない場合にお
ける低温ブラインの温度変動例を示し、第４図（ｃ）に
本実施例にかかる（バイパス弁6a、6bを設けた場合の）
低温ブラインの温度変動例を示す。FIG. 4B shows an example of the temperature fluctuation of the low-temperature brine when the bypass valves 6a and 6b are not provided, and FIG. 4C shows the present embodiment (when the bypass valves 6a and 6b are provided).
5 shows an example of temperature fluctuation of a low-temperature brine.
なお、上記実施例では、水素吸蔵熱交換器１、２の温
度逆転によりバイパス弁6a、6b及び二方弁6c、6dを制御
したが、その前にバイパス弁6a、6b及び二方弁6c、6dを
制御してもよい。In the above embodiment, the bypass valves 6a, 6b and the two-way valves 6c, 6d are controlled by the temperature reversal of the hydrogen storage heat exchangers 1, 2, but before that, the bypass valves 6a, 6b and the two-way valve 6c, 6d may be controlled.
例えば、二方弁31〜34及び圧縮機３をタイマにより定
周期運転する場合、水素吸蔵熱交換器１、２の温度がほ
ぼ同程度である期間すなわちバイパス弁6a、6bを開き、
二方弁6c、6dを閉じるべき期間は予め分かっているの
で、バイパス弁6a、6b及び二方弁6c、6dを二方弁31〜34
及び圧縮機３と同期してタイマ制御すればよい。For example, when the two-way valves 31 to 34 and the compressor 3 are operated at a fixed period by a timer, the period in which the temperatures of the hydrogen storage heat exchangers 1 and 2 are substantially the same, that is, the bypass valves 6a and 6b are opened,
Since the period for closing the two-way valves 6c and 6d is known in advance, the bypass valves 6a and 6b and the two-way valves 6c and 6d are connected to the two-way valves 31 to 34.
In addition, the timer control may be performed in synchronization with the compressor 3.
なお、上記実施例において水素輸送を圧縮機３による
機械駆動に代えて熱駆動により実施できることは従前通
りである。It is to be noted that, in the above embodiment, the hydrogen transport can be performed by thermal drive instead of mechanical drive by the compressor 3 as before.
［発明の効果］ 上記説明したように、本発明の水素吸蔵ヒートポンプ
では、両水素吸蔵熱交換器間における水素流通方向の切
換による熱輸送ボトム期間に水素吸蔵熱交換器をバイパ
スさせて熱利用側の熱交換器に配管部またはその内部の
熱流体の顕熱を循環ポンプによる熱流体の循環により輸
送する構成を採用している。[Effects of the Invention] As described above, in the hydrogen storage heat pump of the present invention, the hydrogen storage heat exchanger is bypassed during the heat transport bottom period due to the switching of the hydrogen flow direction between the two hydrogen storage heat exchangers. The heat exchanger has a configuration in which the sensible heat of the heat fluid in the pipe portion or the inside thereof is transported by circulation of the heat fluid by the circulation pump.
したがって、水素流通方向の切換による水素吸蔵熱交
換器と吸熱側熱交換器及び放熱側熱交換器の少なくとも
一方との間における熱輸送能低下期間に、平均温度範囲
内に冷却された吸熱側熱交換器及び吸熱配管部（熱流体
を含む）が高温の水素吸蔵熱交換器を冷却することを防
止することができる。又、平均温度範囲内に加熱された
放熱側熱交換器及び放熱配管部（熱流体を含む）が低温
の水素吸蔵熱交換器を加熱することを防止することがで
きる。Therefore, during the heat transfer capability reduction period between the hydrogen storage heat exchanger and at least one of the heat absorption side heat exchanger and the heat radiation side heat exchanger due to the switching of the hydrogen flow direction, the heat absorption side heat cooled within the average temperature range. It is possible to prevent the exchanger and the heat absorbing pipe section (including the heat fluid) from cooling the high-temperature hydrogen storage heat exchanger. Further, it is possible to prevent the heat-dissipating-side heat exchanger and the heat-dissipating piping (including the heat fluid) heated within the average temperature range from heating the low-temperature hydrogen storage heat exchanger.
それにより、水素吸蔵熱交換器から吸熱側熱交換器及
び放熱側熱交換器の少なくとも一方への熱輸送能力が減
少することを防止できまた、簡単な装置構成により熱輸
送能力の変動を抑止することができる。Thereby, it is possible to prevent a decrease in the heat transport ability from the hydrogen storage heat exchanger to at least one of the heat absorption side heat exchanger and the heat radiation side heat exchanger, and to suppress a change in the heat transport ability with a simple device configuration. be able to.
第１図は本発明の第１実施例を示すブロック図、第２図
は弁制御回路図、第３図はバイパス弁制御回路図、第４
図は吸熱量変化を示す波形図である。 １、２……水素吸蔵熱交換器 ３……圧縮機（水素圧送管路部の一部） ４……吸熱側熱交換器 ５……放熱側熱交換器 6a、6b……バイパス弁（水素吸蔵熱交換器バイパス手
段） 6c、6d……二方弁（水素吸蔵熱交換器バイパス手段） ７、８……ポンプ1 is a block diagram showing a first embodiment of the present invention, FIG. 2 is a valve control circuit diagram, FIG. 3 is a bypass valve control circuit diagram, and FIG.
The figure is a waveform diagram showing a change in heat absorption. 1, 2 ... Hydrogen storage heat exchanger 3 ... Compressor (part of hydrogen pumping pipeline) 4 ... Heat absorption side heat exchanger 5 ... Heat radiation side heat exchanger 6a, 6b ... Bypass valve (hydrogen 6c, 6d ... two-way valve (hydrogen storage heat exchanger bypass means) 7, 8 ... pump
───────────────────────────────────────────────────── フロントページの続き (72)発明者 前田 洋規 愛知県刈谷市豊田町２丁目１番地 株式 会社豊田自動織機製作所内 (56)参考文献 特開 昭63−15051（ＪＰ，Ａ) 特開 平２−110263（ＪＰ，Ａ) 特開 昭64−10070（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F25B 17/12 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroki Maeda 2-1-1 Toyota-cho, Kariya-shi, Aichi Prefecture Inside Toyota Industries Corporation (56) References JP-A-63-15051 (JP, A) Hei 2-110263 (JP, A) JP-A-64-10070 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) F25B 17/12
Claims (2)
換器と、 該両水素吸蔵熱交換器間で水素を往復させる水素圧送管
路部と、 吸熱側熱交換器及び放熱側熱交換器と、 循環ポンプを有して水素放出側の上記水素吸蔵熱交換器
及び上記吸熱側熱交換器の間で熱流体を循環させる吸熱
配管部と、 循環ポンプを有して水素吸収側の上記水素吸蔵熱交換器
及び上記放熱側熱交換器の間で熱流体を循環させる放熱
配管部と、 上記吸熱配管部または放熱配管部に設けられて上記水素
吸蔵熱交換器を迂回して上記熱流体を循環させる水素吸
蔵熱交換器バイパス手段とを備え、 上記水素吸蔵熱交換器バイパス手段は、 上記両水素吸蔵熱交換器間における水素流通方向の切換
による熱輸送能低下期間に上記循環ポンプにより上記水
素吸蔵熱交換器を介することなく上記吸熱側熱交換器及
び上記吸熱配管部に、又は、上記放熱側熱交換器及び放
熱配管部内に上記熱流体を循環させることを特徴とする
水素吸蔵ヒートポンプ。1. A pair of hydrogen storage heat exchangers having a hydrogen storage alloy, a hydrogen pumping line for reciprocating hydrogen between the two hydrogen storage heat exchangers, a heat absorption side heat exchanger and a heat radiation side heat exchanger. A heat absorbing pipe section having a circulation pump for circulating a heat fluid between the hydrogen storage heat exchanger on the hydrogen release side and the heat absorption side heat exchanger; and a hydrogen absorption side hydrogen section having a circulation pump. A heat-dissipating pipe section for circulating a heat fluid between the storage heat exchanger and the heat-dissipation-side heat exchanger; and a heat-absorbing heat exchanger provided on the heat-absorbing pipe section or the heat-dissipating pipe section to bypass the hydrogen-absorbing heat exchanger. A hydrogen storage heat exchanger bypass means for circulating the hydrogen storage heat exchanger, wherein the hydrogen storage heat exchanger bypass means is provided with the hydrogen storage heat exchanger by the circulation pump during a period in which the heat transfer capability is reduced by switching the hydrogen flow direction between the two hydrogen storage heat exchangers. Via storage heat exchanger A hydrogen storage heat pump, wherein the heat fluid is circulated through the heat absorption side heat exchanger and the heat absorption pipe section or through the heat radiation side heat exchanger and the heat dissipation pipe section without the heat fluid.
いて、 上記吸熱配管部または放熱配管部に冷熱または温熱を蓄
積する蓄熱器を有し、上記水素吸蔵熱交換器バイパス手
段は、上記両水素吸蔵熱交換器間における水素流通方向
の切換による熱輸送能低下期間に上記循環ポンプにより
上記水素吸蔵熱交換器を介することなく上記吸熱側熱交
換器、上記蓄熱器及び上記吸熱配管部に、又は、上記放
熱側熱交換器、上記蓄熱器及び放熱配管部内に上記熱流
体を循環させることを特徴とする水素吸蔵ヒートポン
プ。2. The hydrogen storage heat pump according to claim 1, further comprising: a heat storage unit for storing cold or warm heat in the heat absorption pipe portion or the heat radiation pipe portion, wherein the hydrogen storage heat exchanger bypass means includes a hydrogen storage heat exchanger. The heat-absorbing heat exchanger, the heat-storing device and the heat-absorbing pipe section without passing through the hydrogen-absorbing heat exchanger by the circulating pump during the heat-transfer-capability reduction period due to the switching of the hydrogen flow direction between the heat exchangers, or A hydrogen storage heat pump, wherein the heat fluid is circulated in the heat radiation side heat exchanger, the heat storage device, and the heat radiation pipe portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26069990A JP2876764B2 (en) | 1990-09-28 | 1990-09-28 | Hydrogen storage heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26069990A JP2876764B2 (en) | 1990-09-28 | 1990-09-28 | Hydrogen storage heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04139363A JPH04139363A (en) | 1992-05-13 |
| JP2876764B2 true JP2876764B2 (en) | 1999-03-31 |
Family
ID=17351548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26069990A Expired - Fee Related JP2876764B2 (en) | 1990-09-28 | 1990-09-28 | Hydrogen storage heat pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2876764B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101773789B1 (en) | 2010-12-13 | 2017-09-01 | 듀쿨, 엘티디. | Method and apparatus for conditioning air |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040050758A (en) * | 2002-12-09 | 2004-06-17 | 엘지전자 주식회사 | heating and cooling device for hydrogen storage alloys and method thereof |
| KR100946235B1 (en) * | 2008-02-01 | 2010-03-09 | 김병관 | Heating and cooling equipment using hydrogen storage alloy |
| CN113654141B (en) * | 2021-08-06 | 2023-03-24 | 青岛海尔空调器有限总公司 | Method and device for controlling electrochemical refrigeration system and electrochemical refrigeration system |
| CN119268173B (en) * | 2024-10-14 | 2025-09-23 | 中国科学院工程热物理研究所 | A solid-state hydrogen storage thermal management system and method combining heat pump and cold and heat storage |
-
1990
- 1990-09-28 JP JP26069990A patent/JP2876764B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101773789B1 (en) | 2010-12-13 | 2017-09-01 | 듀쿨, 엘티디. | Method and apparatus for conditioning air |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04139363A (en) | 1992-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |