JP2000346486A - Heat utilizing system utilizing hydrogen storage alloy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling capability by raising a pressure difference in containers for storing and discharging hydrogen. SOLUTION: When a hydrogen driver α supplies heated water to a first container S1 for sealing a high-temperature alloy to raise its internal pressure, and supplies radiant water to a third container S3 for sealing a low-temperature alloy after a given time E for assuring the difference is elapsed to lower the internal pressure; hydrogen is rapidly moved from the high to the low- temperature alloys. When a first cold heat output unit supplies radiant water to a second container S2 for sealing an intermediate-temperature alloy to lower its internal pressure and supplies cold heat output water to the container S3 for sealing the alloy after a predetermined time B for assuring the difference is elapsed to raise the internal pressure, hydrogen is rapidly moved from the low- to the intermediate-temperature alloys. A second cold heat output unit supplies radiant water to a first alloy S1 for sealing a high-temperature alloy to lower the pressure and supplies cold heat output water to the second, third containers for sealing the intermediate and low temperature alloys after a given time C assuring the difference is elapsed to raise the pressure. As a result, cooling capability is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heat utilization using a hydrogen storage alloy which obtains a cold output by utilizing an endothermic effect generated at the time of hydrogen release by causing the hydrogen storage alloy to repeatedly store and release hydrogen. About the system.

[0002]

2. Description of the Related Art A heat utilization system for obtaining a cold output by using a hydrogen storage alloy first releases the internal pressure of hydrogen into a container for enclosing a high-temperature alloy that is a hydrogen storage alloy having a high hydrogen equilibrium temperature at the same equilibrium hydrogen pressure. Supply the heating medium to keep the pressure higher than the pressure, and put the internal pressure lower than the hydrogen release pressure in the container that encloses the low-temperature alloy, which is a hydrogen storage alloy that has the same equilibrium hydrogen pressure and a low hydrogen equilibrium temperature compared to the high-temperature alloy. A heat-dissipating heat medium for keeping the temperature low is supplied, and a hydrogen driving step of driving hydrogen from a high-temperature alloy to a low-temperature alloy is performed. Next, a heat radiating heat medium for keeping the internal pressure lower than the hydrogen release pressure is supplied to the container enclosing the high-temperature alloy, and a cold heat output for maintaining the internal pressure higher than the hydrogen release pressure is supplied to the container enclosing the low-temperature alloy. A heat output medium is supplied to perform a cold output process of transferring hydrogen from the low-temperature alloy to the high-temperature alloy. Then, the cycle of the above-described hydrogen drive process and the cold heat output process is repeated to obtain cold heat from the heat medium for cold heat output.

[0003]

In the above cycle,
During the hydrogen driving process, the time when the supply of the heat medium for heating was started to the container enclosing the high-temperature alloy and the time when the supply of the heat medium for heat radiation was started to the container enclosing the low-temperature alloy were simultaneous. However, before the hydrogen drive process, since it was a cold heat output process, immediately after starting to supply the heating medium for heat and the heat medium for heat dissipation, the internal pressure of the container enclosing the high-temperature alloy was low,
Conversely, the internal pressure of the container in which the low-temperature alloy is sealed is high.
After the high and low states are exchanged, the high-temperature alloy releases hydrogen and the low-temperature alloy shifts to the state of storing hydrogen. It takes time. In particular, the high-temperature alloy on the hydrogen release side has a tendency to decrease in temperature with the release of hydrogen, while the low-temperature alloy on the hydrogen storage side has a tendency to generate heat with the storage of hydrogen. Even if is replaced, the movement of hydrogen will start slowly,
Time is required for hydrogen transfer.

[0004] Further, in the conventional cold heat output process, the time when the supply of the heat radiating heat medium to the container enclosing the high temperature alloy is started and the time when the supply of the heat medium for the cold heat output is started to the container enclosing the low temperature alloy. And at the same time. However, since the hydrogen drive process (or the preceding cold output process) was performed before the cold output process, immediately after the supply of the heat release heat medium and the cold output heat medium was started, the internal pressure of the container in which the high-temperature alloy was sealed was immediately increased. Is high, and conversely, the internal pressure of the container for enclosing the low-temperature alloy is low. After the high and low states are exchanged, the low-temperature alloy releases hydrogen and the high-temperature alloy shifts to the state of storing hydrogen.However, it takes time for the high and low states to be exchanged, so during the cooling output process, It takes time. In particular, the high-temperature alloy on the hydrogen storage side has a tendency to generate heat with the storage of hydrogen, while the low-temperature alloy on the hydrogen release side has a tendency to decrease in temperature with the release of hydrogen. , The movement of hydrogen is started slowly, and it takes a long time for the cooling output. As described above, in the hydrogen drive process and the cold heat output process, since the pressure difference between the container for enclosing the high-temperature alloy and the container for enclosing the low-temperature alloy is not large, it is difficult to rapidly achieve hydrogen transfer. It takes time for hydrogen driving and cooling output, and as a result, the cooling capacity is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for transferring hydrogen between containers.
Heat utilization using a hydrogen-absorbing alloy that can increase the pressure difference between the container that stores hydrogen and the container that releases hydrogen to increase the amount of hydrogen transfer within a certain period of time and improve the cooling capacity In providing the system.

[0006]

[Means for Solving the Problems] A heat utilization system utilizing a hydrogen storage alloy utilizes heat absorption at the time of release of hydrogen from the hydrogen storage alloy. A plurality of containers each containing a plurality of types of hydrogen storage alloys having different hydrogen equilibrium temperatures, a hydrogen passage communicating with each of these containers, and changing a heating medium temperature in contact with each of the containers, between the containers. A heat medium changing means for moving hydrogen, wherein the heat medium changing means changes the internal pressure to a hydrogen release pressure in a container for enclosing a high-temperature alloy that is a hydrogen storage alloy having a high hydrogen equilibrium temperature at the same equilibrium hydrogen pressure. Supply the heating medium for heating to a higher temperature, and in the container for enclosing the low-temperature alloy, which is a hydrogen storage alloy having a low hydrogen equilibrium temperature at the same equilibrium hydrogen pressure and the same equilibrium hydrogen pressure as that of the high-temperature alloy, set the internal pressure to be lower than the hydrogen release pressure Release to keep low A heat transfer medium for supplying a heat transfer medium to drive the hydrogen from the high-temperature alloy to the low-temperature alloy to perform a hydrogen driving process, and keeping the internal pressure lower than the hydrogen release pressure in a container for enclosing the high-temperature alloy. And supplying a heating medium for cooling output for keeping the internal pressure higher than the hydrogen release pressure to the container enclosing the low-temperature alloy, and performing a cooling output step of moving hydrogen from the low-temperature alloy to the high-temperature alloy. In the hydrogen driving step, a heating medium for heating is supplied to a container enclosing the high-temperature alloy, and after the internal pressure of the container rises above the internal pressure of the container enclosing the low-temperature alloy, the low-temperature It is characterized by being provided so as to supply a heat radiating heat medium to a container for enclosing the alloy.

A heat utilization system utilizing a hydrogen storage alloy utilizes heat absorption at the time of release of hydrogen from the hydrogen storage alloy, and a plurality of heat exchange systems having different hydrogen equilibrium temperatures at the same equilibrium hydrogen pressure. A plurality of containers each containing a different type of hydrogen storage alloy, a hydrogen passage communicating these containers, and changing the temperature of the heating medium that touches each of the containers to transfer hydrogen between the containers. Heating medium changing means, wherein the heating medium changing means comprises a heating device for enclosing a high-temperature alloy, which is a hydrogen storage alloy having a high hydrogen equilibrium temperature at the same equilibrium hydrogen pressure, for keeping the internal pressure higher than the hydrogen releasing pressure. A heat medium for supplying a heat medium for use, and a container for enclosing a low-temperature alloy that is a hydrogen storage alloy having a low hydrogen equilibrium temperature at the same equilibrium hydrogen pressure as the high-temperature alloy, for keeping the internal pressure lower than the hydrogen release pressure. Supply heat medium Performing a hydrogen driving step of driving hydrogen from the high-temperature alloy to the low-temperature alloy, and supplying a heat-dissipating heat medium for keeping the internal pressure lower than the hydrogen release pressure to the container enclosing the high-temperature alloy, and A container for enclosing the low-temperature alloy is provided so as to supply a heating medium for cooling output for keeping the internal pressure higher than the hydrogen release pressure, and to perform a cooling output step of moving hydrogen from the low-temperature alloy to the high-temperature alloy, In this cold heat output step, a heat radiating medium is supplied to the container enclosing the high-temperature alloy, and after the internal pressure of the container falls below the internal pressure of the container enclosing the low-temperature alloy, the container for enclosing the low-temperature alloy is supplied to the container. It is characterized by being provided so as to supply a heat medium for cold heat output.

[0008]

In the hydrogen driving step, first, a heating medium for heating is supplied to a container for enclosing the high-temperature alloy. As a result, the internal pressure of the container that encloses the high-temperature alloy, which was lower than the internal pressure of the container that encloses the low-temperature alloy, becomes higher than the internal pressure of the container that encloses the low-temperature alloy. As described above, after the internal pressure of the container in which the high-temperature alloy is sealed rises higher than the internal pressure of the container in which the low-temperature alloy is sealed, the heat dissipation heat medium is supplied to the container in which the low-temperature alloy is sealed. At this time,
Since the pressure difference between the container that already releases hydrogen and the container that stores hydrogen is large, even if the high-temperature alloy releases hydrogen and absorbs heat, and the low-temperature alloy absorbs hydrogen and generates heat, The pressure difference is kept large, and as a result, hydrogen transfer can be performed more rapidly than in the past. In other words, in the hydrogen driving process, the amount of hydrogen movement within a certain period of time becomes larger than that of the conventional case, and as a result, the cooling capacity can be improved.

[0009] In the cooling / heating step, first, a heat radiating heat medium is supplied to a container in which the high-temperature alloy is sealed. As a result, the internal pressure of the container that encloses the high-temperature alloy, which was higher than the internal pressure of the container that encloses the low-temperature alloy, becomes lower than the internal pressure of the container that encloses the low-temperature alloy. As described above, after the internal pressure of the container for enclosing the high-temperature alloy falls below the internal pressure of the container for enclosing the low-temperature alloy, the heating medium for cooling output is supplied to the container for enclosing the low-temperature alloy. At this time, since the pressure difference between the container that already releases hydrogen and the container that stores hydrogen is large, the high-temperature alloy absorbs hydrogen and generates heat, and the low-temperature alloy releases hydrogen and absorbs heat. However, the pressure difference is kept large, and as a result, hydrogen transfer can be performed more rapidly than in the past. That is, in the cooling output process, the amount of hydrogen transfer within a certain period of time is larger than that in the conventional case, and as a result, the cooling capacity can be improved.

[0010]

Next, embodiments of the present invention will be described based on examples and modifications. [Configuration of Embodiment] In this embodiment, a heat utilization system using a hydrogen storage alloy is applied to cooling for indoor air conditioning. The cooling apparatus 1 will be described with reference to FIGS.
Note that the cooling device 1 of the present embodiment uses a two-stage cycle as an example of a multi-stage cycle.

The schematic configuration of the cooling device 1 will be described with reference to FIG. The cooling device 1 includes a heat exchange unit 2 using a hydrogen storage alloy, a combustion device 3 for producing heating water (corresponding to a heating medium for heating, water in this embodiment) for heating the hydrogen storage alloy, and a hydrogen storage device. A facility water cooling means 4 for cooling facility water by cooling the facility water (corresponding to a heat medium for heat dissipation, water in the present embodiment) for cooling the alloy; and a cold heat cooled by heat absorption generated by the hydrogen releasing action of the hydrogen storage alloy. An indoor air conditioner 5 for air-conditioning the room with output water (corresponding to a heat medium for cooling output, in this embodiment, water), and a control device 6 for controlling each mounted electric functional component.

The heat exchange unit 2, the combustion device 3, the facility water cooling means 4, and the control device 6 are installed outdoors as an outdoor unit 7, and an indoor air conditioner 5 is disposed indoors. The cooling device 1 according to the present embodiment is a so-called multi-air conditioner in which a plurality of indoor air conditioners 5 can be connected to one outdoor unit 7.

(Description of Heat Exchange Unit 2) The heat exchange unit 2 includes a heat exchanger 8 for exchanging heat between the hydrogen storage alloy and a plurality of heat media, and a distributor 9 for supplying and discharging a plurality of heat media. It is composed of The heat exchanger 8 and the distributor 9 constitute a heat medium changing means for changing the type of heat medium touching the first, second, and third vessels S1, S2, S3 (described later). The heat exchanger 8 shown in this embodiment has a cylindrical shape having a cylindrical hole 8a on the rotation center side, and a columnar distributor 9 arranged in a horizontal direction is provided with the cylindrical hole 8a.
It is rotatably inserted into the inside and is provided so as to rotate around the distributor 9 (FIG. 2 shows a view in which the distributor 9 is arranged in a vertical direction for convenience).

The heat exchanger 8 has a structure as shown in FIGS.
A large number of flat ring disks R are stacked, and one ring disk R has a flat alloy storage chamber 10 for storing a hydrogen storage alloy therein (see the hatching in FIG. 5A). A plurality of first to third containers S1 to S3, which will be described later, are radially arranged, and a heat medium passage 1 is provided between the alloy container (a container constituting the alloy storage chamber 10) and the alloy container in the stacking direction.
1 {reference in hatching in FIG. 5 (b)}.

One ring disk R is formed by opposing and joining a pair of plates 12 and 13 (see FIG. 3) formed by press-forming a metal having no hydrogen permeability, such as stainless steel or copper. Each of the plates 12 and 13 has a recess for forming the alloy storage chamber 10 formed on one surface and a recess for forming the heat medium passage 11 formed on the other surface. As shown in FIG. 3, the heat exchanger 8 is formed by stacking a number of ring disks R each including a pair of plates 12 and 13 and connecting pipes S5 and end portions for securing a hydrogen passage S4 at the outer end of the alloy container. In addition to the closing lid S6, a cylindrical pipe S7 for distributing and slidingly contacting the distributor is mounted on the inner periphery of the cylindrical hole 8a and joined by a joining method such as vacuum brazing or welding. The supply and discharge of the heat medium to and from each of the heat medium passages 11 in the heat exchanger 8 is performed through a fixed side supply / discharge hole A1 (described later) formed in the outer peripheral surface of the distributor 9 in the cylindrical pipe S7. A rotation-side supply / discharge hole A2 (to be described later) is formed.

The number of alloy containers formed on one ring disk R is 3 × n (n = positive integer) in the case of a two-stage cycle.
In this embodiment, an example is shown in which six alloy containers are formed on one ring disk R. In the case of a three-stage cycle, 4 × n. The plurality of alloy containers formed on one ring disk R are arranged so as to be wound around the center of the disk. Thereby, the filling efficiency of the hydrogen storage alloy in the space occupied by the heat exchange unit 2 increases, and as a result, the heat exchange unit 2 can be downsized.

The alloy container formed by laminating a number of ring disks R includes a first container S 1 containing a high-temperature alloy HM,
The second container S2, which communicates with the first container S1 via the hydrogen passage S4 and in which the intermediate temperature alloy MM is sealed,
2 is divided into a third container S3 in which the low-temperature alloy LM is sealed.

The hydrogen storage alloys have different hydrogen equilibrium pressures.
The high-temperature alloy HM enclosed in the first container S1 is a powder of a high-temperature hydrogen-absorbing alloy having the highest hydrogen equilibrium temperature at the same equilibrium hydrogen pressure, and is enclosed in the second container S2. Medium temperature alloy MM is a powder of medium temperature hydrogen storage alloy,
The low-temperature alloy LM enclosed in the third container S3 is a powder of a low-temperature hydrogen storage alloy having the lowest hydrogen equilibrium temperature at the same equilibrium hydrogen pressure. This relationship will be described with reference to the PT refrigeration cycle diagram of FIG. 6. The characteristics of the hydrogen storage alloy are relatively high on the high temperature side (left side in the drawing), high temperature alloy HM, and low on the low temperature side. , Intermediate between them is the medium temperature alloy MM
It is. The powdery alloys HM, MM, and LM are filled in the first to third containers S1 to S3, evacuated, activated, filled with hydrogen at a high pressure, and then filled with an alloy. The opening 14 is sealed and sealed with a metal lid (not shown).

The cylindrical heat exchanger 8 is provided to rotate around a distributor 9 having a cylindrical shape. The heat exchanger 8 is continuously and rotationally driven by a rotational drive unit (for example, a unit that directly or indirectly rotates the heat exchanger 8 by an electric motor via a gear or a belt).

The structure of the distributor 9 is shown in FIGS. The distributor 9 switches and supplies the heat medium that contacts the first to third containers S1 to S3. The rotation of the cylindrical heat exchanger 8 around the distributor 9 allows the heat medium to be interposed between the alloy containers. The heat medium supplied to each heat medium passage 11 (during the stacking direction) is switched, and the first to third containers S1 to S3 connected by the hydrogen passage S4 are connected to the hydrogen drive unit α → first cold / heat output unit β. → 2nd
The process proceeds to the cooling output section γ (see FIG. 9).

The hydrogen driving unit α is a part for moving the hydrogen in the first container S1 and a part of the hydrogen remaining in the second container S2 into the third container S3. The first cooling / heating section β is a portion for moving the hydrogen that has moved into the third container S3 to the second container S2. The second cooling / heating portion γ is a portion for moving the hydrogen in the second container S2 and a part of the hydrogen remaining in the third container S3 to the first container S1. The hydrogen drive unit α, the first cooling output unit β, and the second cooling output unit γ are approximately 12
They are provided at 0 ° intervals, and are defined by the communication range of each fixed-side supply / discharge hole A1 (described later) formed on the outer peripheral surface of the distributor 9.

The hydrogen driving section α is a first heating zone α to which heated water (for example, about 80 ° C.) that comes into contact with the first container S 1 is supplied.
1. A second heating auxiliary zone α2 in which pressurized water (for example, about 56 ° C.) is brought into contact with the second vessel S2, and a third heat radiation water (for example, about 28 ° C.) in contact with the third vessel S3
A heat radiation area α3 is provided. The first cooling / heating output part β is provided in the first container S
A first hydrogen transfer restriction region β1 to which pressurized water (for example, about 58 ° C.) contacting with 1 is supplied; a second heat radiation area β2 for which radiating water (for example, about 28 ° C.) to contact with the second container S2;
A third cooling output zone β3 is provided to which cooling output water (for example, about 13 ° C.) that comes into contact with the third container S3 is supplied. The second cooling / heat output section γ is provided with a first radiating region γ1 to which facility water (for example, about 28 ° C.) which comes into contact with the first vessel S1 is supplied.
The second cold output area γ2 to which the cold output water (for example, about 13 ° C.) that comes into contact with the second vessel 2 is supplied, and the third cold output output area to which the cold output water (for example, about 13 ° C.) that comes into contact with the third container S3 is supplied. γ3.

When the heat exchanger 8 is rotated by the rotation driving means, the group of the first containers S1 is moved to the first heating zone α1.
→ The first hydrogen transfer restriction area β1 → the first heat radiation area γ1 is repeated, and the group of the second vessels S2 repeats the second heating auxiliary area α2 → the second heat radiation area β2 → the second cooling power output area γ2, and the third vessel S3
Repeats the third heat radiation area α3 → the third cooling power output area β3 → the third cooling power output auxiliary area γ3.

Next, delivery of the heat medium between the distributor 9 and the heat exchanger 8 will be described. As shown in FIG. 7, the distributor 9 includes a first block 9a for supplying and discharging a heat medium to and from a heat medium passage 11 formed between the first containers S1, and a space between each of the second containers S2. A second block 9b for supplying and discharging the heat medium to and from the formed heat medium passage 11, and a third block 9c for supplying and discharging the heat medium to and from the heat medium passage 11 formed between each of the third containers S3. And the first block 9a
And the flow of the heat medium is arranged between
A first joint 9d that is twisted and changed by 20 °, and a second joint 9e that is arranged between the second block 9b and the third block 9c and that twists and changes the flow of the heat medium by 120 °.
It is composed of

The distributor 9 of this embodiment is similar to the distributor 9 shown in FIG.
As shown in FIG. 8B, a series connection supply type for supplying a heat medium in series to the first to third containers S1 to S3 is shown. As shown in FIG. A parallel connection supply type for supplying a heat medium in parallel to S1 to S3 may be adopted. Each of the first to third blocks 9a to 9c is
A fixed-side supply / discharge hole A1 for supply / discharge of a heat medium is formed corresponding to each of the hydrogen drive unit α, the first cooling / heating output unit β, and the second cooling / heating output unit γ. .

Each of the fixed side supply / discharge holes A1 will be specifically described with reference to FIG. The first block 9a includes a fixed-side supply / discharge hole A1 for supplying / discharging heated water to / from the heating medium passage 11 between the first containers S1 shifted to the first heating region α1, a first hydrogen transfer restriction region β.
1, a fixed-side supply / discharge hole A1 for supplying / discharging pressurized water to / from the heat medium passage 11 between the first containers S1 transferred to the first container S1, and heat radiation to the heat medium passage 11 between the first containers S1 transferred to the first heat radiation region γ1. A fixed-side supply / discharge hole A1 for supplying / discharging water is formed. Second
Block 9b includes a second heating auxiliary region α2
A fixed-side supply / discharge hole A1 for supplying / discharging pressurized water to / from the heat medium passage 11 between the containers S2, and a supply / discharge of heat radiation water to / from the heat medium passage 11 between the second containers S2 shifted to the second heat radiation region β2. A fixed-side supply / discharge hole A1 for supplying / discharging the cold-heat output water is formed in the heat medium passage 11 between the second container S2 shifted to the second cold-heat output area γ2. Third block 9c
The fixed-side supply / discharge hole A1 for supplying / discharging the facility water to / from the heat medium passage 11 between the third containers S3 shifted to the third heat radiation area α3.
A fixed-side supply / discharge hole A1 for supplying / discharging the cold-heat output water to / from the heat medium passage 11 between the third containers S3 shifted to the third cold-heat output area β3, and the third vessel shifted to the third cold-heat output auxiliary area γ3. S
A fixed side supply / discharge hole A1 for supplying / discharging the cooling / heating output water is formed in the heat medium passage 11 between the three. Each of the fixed side supply / discharge holes A1 is arranged such that the supply side and the discharge side are shifted in the axial direction.

As described above, the cylindrical pipe S7 for the sliding contact of the distributor is joined to the inner peripheral surface of the heat exchanger 8, and the cylindrical pipe S7 is connected to the fixed side supply / discharge of the distributor 9. A plurality of rotation side supply / discharge holes A2 for supplying / discharging the heat medium through the holes A1 are formed. The heat exchanger 8 of this embodiment is formed by laminating a number of ring disks R each having six alloy containers formed in the circumferential direction in the axial direction.
The group of containers S1 is circumferentially arranged around the first block 9a.
And a group of second containers S2 adjacent to each other in the stacking direction
Six groups of the third containers S3, which are arranged in the circumferential direction around the second block 9b and are adjacent to each other in the stacking direction, form the third block 9c.
Are arranged in the circumferential direction. Therefore, the cylindrical pipe S7 is provided with a total of twelve rotation-side supply / discharge holes A2 for the six groups of the first container S1 on the supply side and the discharge side. A total of 12 rotary supply / discharge holes A2 are formed on the supply side and the discharge side for the group, and a total of 12 rotary supply / discharge holes on the supply side and the discharge side are formed for the six groups of the third container S3. A side supply / discharge hole A2 is formed.
Each of the rotation side supply / discharge holes A2 is arranged such that the supply side and the discharge side are shifted in the axial direction (the laminating direction of the alloy containers).

As described above, the heat medium passage 11 is formed between the adjacent alloy containers in the stacking direction, and the first, second, and third containers S1, S2, S2 are formed in the alloy container.
3 A through hole A3 penetrating in the stacking direction within each range
Are provided, and each heat medium passage 11 communicates with the adjacent heat medium passage 11 via the through hole A3. The heat exchanger 8 of this embodiment has a rotation side supply / discharge hole A of a cylindrical pipe S7.
A parallel connection supply type in which the heat medium supplied into the heat exchanger 8 from the supply side of No. 2 is distributed and supplied to each heat medium passage 11 is adopted. For this reason, both through holes A3 for supplying the heat medium and through holes A3 for discharging the heat medium are formed in each alloy container. The heat exchanger 8 has a through hole A3 for supplying a heat medium and a through hole A3 for discharging a heat medium in each alloy container.
(See FIG. 10 (a)), the partition of the boundary between the first container S1 group and the second container S2 group, and the second container S2 group and the third container S3. This is used in combination with a partition ring disk R2 (see FIG. 10B) having no through hole A3 in each alloy container.

The flow of the heat medium supplied into the heat exchanger 8 will be described with reference to FIG. The heat medium supplied into the heat exchanger 8 from the supply side (upper side in FIG. 11) of the rotation-side supply / discharge hole A2 exchanges heat through the heat medium supply through-holes A3 connecting the heat medium passages 11. It flows in the axial direction of the vessel (downward in FIG. 11), and is distributed and supplied to the respective heat medium passages 11 through the through holes A3 for supplying the heat medium. The heat medium that has passed through each heat medium passage 11 is collected in a heat medium discharge through hole A3 that communicates with each heat medium passage 11, and the heat exchanger passes through the heat medium discharge through hole A3. 8 (FIG. 11)
Flows downward). And the through hole A for discharging the heat medium
As a result, the heat medium flowing downward in FIG. 11 is discharged from the discharge side (lower side in FIG. 11) of the rotation side supply / discharge hole A2 to the fixed side supply / discharge hole A1 (discharge side) of the distributor 9. That is, in each of the containers S1, S2, and S3 of the heat exchanger 8, the heat medium flows in the axial direction by the through holes A3 provided through in the stacking direction of the alloy containers. The supply side and the discharge side of the provided rotation side supply / discharge hole A2 can be arranged so as to be shifted in the axial direction.

The transfer of the heat medium between the distributor 9 and the heat exchanger 8 will be further described. Immediately after the start of the change of the heat medium, during the initial stage in which the steady reaction of hydrogen release and occlusion between the alloys progresses, the differential pressure between the hydrogen release side and the hydrogen storage side due to the cycle is greater than the steady reaction differential pressure of the process. It is provided so that it can be secured large. In other words, in the hydrogen drive unit α, the heating water as the heating medium for heating is supplied to the first container S1 in which the high-temperature alloy HM is sealed, and the internal pressure of the first container S1 is changed to that of the third container S3 in which the low-temperature alloy LM is sealed. After the internal pressure rises, the third container S3 in which the low-temperature alloy LM is sealed is provided so as to supply radiating water as a radiating heat medium. In the first cooling / heating section β, radiating water as a radiating heat medium is supplied to the second container S2 in which the high-temperature side hydrogen storage alloy (medium temperature alloy MM) is sealed, and the internal pressure of the second container S2 is low. Container S for enclosing the hydrogen storage alloy (low temperature alloy LM) on the side
After the internal pressure has dropped below 3, the third container S3 in which the low-temperature-side hydrogen storage alloy (low-temperature alloy LM) is sealed is supplied so as to supply cold output water as a heat medium for cold output.
Further, in the second cooling / heating output section γ, radiating water as a radiating heat medium is supplied to the first container S1 in which the high-temperature side hydrogen storage alloy (high-temperature alloy HM) is sealed, and the internal pressure of the first container S1 is low. Side hydrogen storage alloy (medium temperature alloy MM and low temperature alloy L
M) after the internal pressures of the second container S2 and the third container S3 in which the hydrogen storage alloy (medium-temperature alloy MM and the low-temperature alloy LM) on the low-temperature side are filled. It is provided so as to supply cold output water, which is a heat medium for cold output.

The above will be described individually. In the hydrogen driving unit α, the first container S1 for releasing hydrogen is heated to increase the internal pressure while the third container S3 for storing hydrogen is cooled to reduce the internal pressure, and the internal pressure of the first and third containers S1, S3 is reduced. It is provided to increase the pressure difference. In this embodiment, the third container S
3 utilizes the fact that the cooling output water is sufficiently cooled by touching the cooling output water in the second cooling output section γ in the previous process. That is, since the third container S3 has already been cooled with the cold output water, the hydrogen drive unit α first supplies pressurized water to the second container S2,
After a lapse of a predetermined time F, heated water is supplied to the first container S1, and after a lapse of the predetermined time E, facility water is supplied to the third container S3.
During the predetermined time F, after the supply of the pressurized water to the second container S2 is started, the temperature of the medium temperature alloy MM in the second container S2 reaches the high temperature alloy HM in the first container S1 in the hydrogen driving unit α. The predetermined time E is a time period before the supply of the heated water to the first container S1 and the low-temperature alloy LM in the third container S3 is changed to the high-pressure alloy HM. This is the time until the temperature rises by absorbing the released hydrogen and causing an exothermic reaction, and the temperature rises before reaching the temperature of the facility water.

As described above, in the hydrogen driving section α, the low-temperature alloy LM in the third container S3 is kept in a sufficiently cooled temperature state by touching the cold output water in the second cold output section γ in the previous process. And the hydrogen storage pressure is lower than in the state where the facility water is supplied. Even if the first container S1 is heated by the heated water in such a state and the high-temperature alloy HM releases hydrogen, the pressure difference is larger than the state where the facility water is supplied to the third container S3, and the high-temperature alloy HM is released. This is convenient for transferring hydrogen from the alloy to the low-temperature alloy LM. In other words, when the high-temperature alloy HM releases hydrogen and the low-temperature alloy LM starts absorbing hydrogen and causing an exothermic reaction,
The pressure difference is kept large, and hydrogen transfer is performed efficiently.

In the first cooling / heat output section β, the third container S3 for releasing hydrogen is kept warm by cooling the second container S2 for storing hydrogen to reduce the internal pressure while keeping the internal pressure low. 2. It is provided to increase the pressure difference between the third container and the third container. Specifically, first, facility water is supplied to the second container S2, pressurized water is supplied to the first container S1 after a predetermined time A has elapsed, and cold / hot water is supplied to the third container S3 after a predetermined time B has elapsed. I do. During the predetermined time A, the supply of facility water to the second vessel S2 is started, and the second vessel S2 is cooled by the pressurized water in the hydrogen drive unit α of the previous process because it has reached a high temperature. Is the time it takes to reach the hydrogen storage pressure. If the timing of supplying the pressurized water to the first container S1 is too long than the predetermined time A, a problem occurs in that the high-temperature alloy HM stores the hydrogen released by the low-temperature alloy LM. During the predetermined time B, after the supply of facility water to the second container S2 is started, the medium temperature alloy MM in the second container S2 starts to absorb hydrogen, the low temperature alloy LM releases hydrogen, and the third container S3 is released. Is a temperature (for example, a temperature lower than 7 ° C.) at which the cooling water is cooled by the endothermic effect of the low-temperature alloy LM because the temperature has been higher than the output temperature by the facility water in the hydrogen driving unit α of the previous process, and ).

In the first cold heat output section β, first, the facility water is supplied to the second container S2 to cool the intermediate temperature alloy MM first, thereby lowering the hydrogen storage pressure. Low temperature alloy LM in such a state
Is a temperature state cooled by the facility water in the hydrogen drive unit α in the previous process, the hydrogen release pressure is higher than the state in which the cooling output water is supplied, and the low temperature alloy LM to the medium temperature alloy MM
It is convenient for hydrogen transfer to That is, when the low-temperature alloy LM releases hydrogen by supplying the cold heat output water to the third container S3 and the medium-temperature alloy MM begins to absorb hydrogen and cause an exothermic reaction, the pressure difference is kept large and the efficiency is improved. Good hydrogen transfer.

In the second cooling / heat output section γ, the first container S1 for storing hydrogen is cooled to reduce the internal pressure, and the second container S2 for releasing hydrogen is heated to prevent the internal pressure from dropping. The first and second vessels S1 and S2 are provided so as to increase the pressure difference between them. Specifically, first, the first container S1
The cooling water is supplied to the second container S2 after a predetermined time C has elapsed, and the third container S is supplied after the predetermined time D has elapsed.
Supply cooling output water to 3 as well. It should be noted that, for a predetermined time C, after the supply of facility water to the first container S1 is started, the first container S1
The first high-temperature alloy HM begins to absorb hydrogen, the middle-temperature alloy MM releases hydrogen, and the surface temperature of the second container S2 decreases, and a temperature (for example, a temperature lower than 7 ° C.) enabling a cold output (for example, 7 ° C.) ). Since the third container S3 has already reached the cold output temperature in the first cold output section β in the previous process, the predetermined time D is equal to the first container S1.
Then, the supply of facility water is started and the inside of the first container S1 becomes the third container S1.
It is the time to reach the same pressure as in 3.

In the second cooling output section γ, first, facility water is supplied to the first container S1 to cool the high-temperature alloy HM first, thereby lowering the hydrogen storage pressure. Medium temperature alloy MM in such a state
Is a temperature state cooled by the facility water in the first cooling output section β in the previous process, the hydrogen release pressure is higher than the state in which the cooling output water is supplied, and the hydrogen transfer from the medium temperature alloy MM to the high temperature alloy HM is performed. It is convenient. That is, the second
When the cold output water is supplied to the vessel S2, the medium temperature alloy MM releases hydrogen, and the high temperature alloy HM begins to absorb hydrogen and start an exothermic reaction, the pressure difference is kept large, and hydrogen transfer is performed efficiently. .

In the hydrogen driving section α, a heat medium for maintaining the internal pressure higher than the hydrogen release pressure is first supplied to the vessel for enclosing the hydrogen storage alloy involved in the release of hydrogen, and then the hydrogen storage section involved in the hydrogen storage is supplied. A heat medium for keeping the internal pressure lower than the hydrogen release pressure is supplied to the container in which the occlusion alloy is sealed while shifting the heat medium, and in each of the first cold output unit β and the second cold output unit γ,
Supply a heat medium that keeps the internal pressure lower than the hydrogen storage pressure to the container that encloses the hydrogen storage alloy involved in hydrogen storage, and then
In this embodiment, as shown in FIG. 1, each hydrogen drive unit α is used as a means for supplying a heat medium for maintaining the internal pressure higher than the hydrogen release pressure to a container for enclosing a hydrogen storage alloy involved in the release of hydrogen. In the first and second cooling and heat output units β and γ, the supply position for the container that initially supplies the heat medium and the supply position for supply with a time difference are indicated. The angle is determined by the time difference.
Each phase angle corresponds to the predetermined time A to F shown above.

(Explanation of Combustion Apparatus 3) The combustion apparatus 3 of this embodiment uses a gas combustion apparatus that generates heat by burning gas as a fuel and heats heated water by the generated heat. A gas burner 16 for burning gas, a gas supply circuit 19 including a gas amount adjusting valve 17 for supplying gas to the gas burner 16 and a gas opening / closing valve 18;
It comprises a combustion fan 20 for supplying combustion air to the heat exchanger, a heat exchanger 21 for exchanging heat between gas combustion heat and heating water, and the like. Then, the heating water is heated to, for example, about 80 ° C. by the heat obtained by the gas combustion of the gas burner 16, and the heated heating water is passed through the heating water circulation path 22 having the heating water circulation pump P1 to the first heating zone α1. Is to be supplied to

As shown in FIG. 1, the pressurized water supply passage 15 for supplying pressurized water to the second auxiliary heating zone α2 and the first hydrogen transfer restriction zone β1 is branched from the heated water circulation passage 22, and has an orifice 15A. And the temperature of the pressurized water in the first hydrogen transfer restriction zone β1 is set to, for example, about 58 ° C. (the first vessel S1
(The temperature at which the high-temperature alloy HM does not occlude and release hydrogen), and the temperature of the pressurized water in the second auxiliary heating zone α2 is, for example, about 56 ° C. (by setting the inside of the second vessel S2 to a pressure higher than the hydrogen release pressure). Temperature at which the intermediate temperature alloy MM releases hydrogen).

(Explanation of the indoor air conditioner 5)
As described above, the indoor heat exchanger 23 is provided inside the indoor heat exchanger 23, and the cold output water supplied to the indoor heat exchanger 23 and the indoor air are forcibly exchanged heat and the air after the heat exchange is performed. Indoor fan 24 for blowing air into the room. The indoor heat exchanger 23 is connected to a cold output water circulation path 25 for circulating the cold output water supplied from the third cold output area β3 and the second cold output area γ2. A cooling output water pump P2 for circulating the cooling output water is provided in the apparatus 7).

(Explanation of the facility water cooling means 4) The facility water cooling means 4 is a water cooling open type cooling tower, and the facility water cooled by the facility water cooling means 4 is a facility water circulation pump P
The third heat radiation area α3,
The second heat radiation area β2 and the first heat radiation area γ1 are supplied. The facility water cooling means 4 includes a third heat dissipation area α3, a second heat dissipation area β2,
The facility water that has passed through the heat dissipation area γ1 flows downward from above,
While exchanging heat with the outside air during the flow to radiate heat, it also partially evaporates during the flow, deprives the radiating water flowing during evaporation of heat of vaporization, and cools the flowing radiating water. . The radiating water cooling means 4 includes a radiating fan (not shown), and is provided so as to promote evaporation and cooling of the radiating water by an air flow generated by the radiating fan. In this embodiment, a water-cooled open-type cooling tower is shown as the facility water cooling means 4, but a water-cooled hermetic or air-cooled hermetic type in which the facility water (heat medium for heat radiation) exchanges heat without contacting air. Means may be used.

Here, the above-mentioned heated water circulation path 22, cold output water circulation path 25 and facility water circulation path 26 are provided with cisterns T1, T2 and T3, respectively, and the water levels in the cisterns T1, T2 and T3 are at predetermined water levels. When it falls below, the water supply valves T4, T5, T6 provided respectively.
Is opened to supply tap water supplied from the water supply pipe 27 into the cisterns T1, T2 and T3.
A drain pan P is disposed below the heat exchange unit 2, and drain water generated in the heat exchange unit 2 is drained by a drain pipe 2.
8 is provided to drain water. The water overflowing from the facility water cooling means 4 is also drained from the drain pipe 28.

(Explanation of the control device 6) The control device 6 is provided with an operation instruction from a controller provided in the indoor air conditioner 5,
In accordance with the input signals of the plurality of sensors provided, the above-mentioned electric heating water circulation pump P1, the cooling / heating output water pump P2, the facility water circulation pump P3, the water supply valves T4, T5, T6, and the heat dissipation fan of the facility water cooling means 4, etc. In addition to controlling the functional components and the electrical functional components of the combustion device 3 (ignition device, gas control valve 17, gas on-off valve 18, combustion fan 20, etc., not shown), the indoor air conditioner 5 is instructed to operate the indoor fan 24. Is to give.

(Explanation of the operation of the cooling operation) The cooling device 1 described above
The operation of the cooling operation according to the above will be described with reference to the PT refrigeration cycle diagram of FIG. When the cooling operation is instructed by the controller of the indoor air conditioner 5, the control device 6 activates the combustion device 3, the rotation driving means, the radiating fan and the heating water circulation pump P1, the cooling / heating output water pump P2, and the radiating water circulation pump P3. Then, the indoor fan 24 of the indoor air conditioner 5 for which cooling is instructed is turned on.

The heat exchanger 8 is continuously rotated by the rotation driving means. This allows many alloy containers to
It moves in the order of the hydrogen drive unit α → the first cooling / heating output unit β → the second cooling / heating output unit γ. That is, each of the first containers S1 has the first heating zone α.
1 → first hydrogen transfer restricted area β1 → first heat radiation area γ1 and each second vessel S2 moves in the order of second heating auxiliary area α2 → second heat radiation area β2 → second cooling / heat output area γ2. Then, each third container S3 moves in the order of the third heat radiation area α3 → the third cold power output area β3 → the third cold power output auxiliary area γ3.

When the operation proceeds to the hydrogen driving section α, the first container S1
Touches the heated water, the second container S2 touches the pressurized water, and the third container S3 touches the facility water. The first container S1 contains heated water (80
C.), the internal pressure of the first vessel S1 increases, and the high-temperature alloy HM releases hydrogen. When the second container S2 comes into contact with the pressurized water (56 ° C.), the internal pressure of the second container S2 increases, and the intermediate temperature alloy MM releases hydrogen. When the third container S3 comes into contact with facility water (28 ° C.), the internal pressure of the third container S3 decreases, and the low-temperature alloy LM stores hydrogen.

As described above, the first container S1 is provided in the first heating zone α.
1 touches the heating water and the second container S2 is in the second heating auxiliary area α2
The third container S3 touches the pressurized water and the third container S3 touches the radiant water in the third radiating area α3, so that the inside of the first container S1 is 80 ° C.
0 MPa, the inside of the second container S2 is 56 ° C .: 1.0 MPa, the inside of the third container S3 is 28 ° C .: 0.9 MPa, and the high temperature alloy HM in the first container S1 releases hydrogen (FIG. 6). The medium temperature alloy MM in the second container S2 also releases a small amount of hydrogen (FIG. 6 '), and the low temperature alloy LM in the third container S3 absorbs the hydrogen released from the high temperature, medium temperature alloy HM and MM (FIG. 6). . Then, after passing through the hydrogen driving unit α, it moves to the first cooling / heating output unit β.

When the operation proceeds to the first cooling output section β, the first container S1 contacts the pressurized water, the second container S2 contacts the facility water, and the third container S3 contacts the cooling output water. When the first container S1 comes into contact with the pressurized water (58 ° C.), the internal pressure of the first container S1 is set to a pressure at which the high-temperature alloy HM does not store and release hydrogen. When the second container S2 comes into contact with facility water (28 ° C.), the internal pressure of the second container S2 decreases, the medium temperature alloy MM absorbs hydrogen, and the low temperature alloy LM of the third container S3 releases hydrogen. Since the low-temperature alloy LM releases hydrogen, heat is absorbed in the third container S3, and the cold output water touching the third container S3 is cooled to, for example, 7 ° C. The low-temperature alloy LM
Is provided so that the internal pressure of the third container S3 becomes higher than the internal pressure of the second container S2 when the cold output water is about 13 ° C.

Thus, the first container S1 touches the pressurized water in the first hydrogen transfer restriction region β1, the second container S2 touches the facility water in the second heat radiation region β2, and the third container S3 Area β
By contacting the cold output water of No. 3, the inside of the first container S1 was 58 ° C .: 0.5 MPa, and the inside of the second container S2 was 28 ° C .: 0.5 MPa.
4 MPa, the temperature in the third container S3 is 13 ° C .: 0.5 MPa, the low-temperature alloy LM in the third container S3 releases hydrogen (FIG. 6), and the medium-temperature alloy MM in the second container S2 absorbs hydrogen (FIG. 6). Of). When the low-temperature alloy LM in the third container S3 releases hydrogen, heat is taken from the cold output water in contact with the third container S3 by an endothermic action to lower the temperature of the cold output water. The first container S1 touches the pressurized water and the high-temperature alloy HM does not occlude or release hydrogen. Then, after passing through the first cold output unit β, it moves to the second cold output unit γ.

When the operation proceeds to the second cooling / heating section γ, the first container S 1 comes into contact with facility water, and the second container S 2 and the third container S 3
Touches the cold output water. The first container S1 contains facility water (28
C.), the internal pressure of the first container S1 decreases, and the high-temperature alloy HM stores hydrogen. Since the middle temperature alloy MM and the low temperature alloy LM release hydrogen, heat is absorbed in the second container S2 and the third container S3, and the cold output water that has touched the second container S2 and the third container S3 is cooled to, for example, 7 ° C. It is. The medium temperature alloy MM is also provided such that the internal pressure of the second container S2 becomes higher than the internal pressure of the first container S1 when the cooling output water is about 13 ° C.

As described above, the first container S1 has the first heat radiation area γ.
By contacting the facility water with 1, the inside of the first container S1 becomes 28
° C: 0.1 MPa, 13 ° C in the second container S2: 0.2M
Pa, the inside of the third container S3 becomes 13 ° C .: 0.5 MPa,
The medium temperature alloy MM in the second container S2 releases hydrogen (FIG. 6).
At the same time, the low-temperature alloy LM in the third container S3 also releases hydrogen (FIG. 6 '), and the high-temperature alloy HM in the first container S1 stores hydrogen (FIG. 6). Medium temperature alloy M in second container S2
When M and the low-temperature alloy LM in the third container S3 release hydrogen, heat is taken from the cold output water contacting the second container S2 and the third container S3 by an endothermic action to lower the temperature of the cold output water. Then, after passing through the second cooling / heating output section γ, the gas moves to the hydrogen driving section α.

Incidentally, the third cooling / heating output area β3, the second cooling / heating output area γ2, and the third cooling / heating output auxiliary area γ of the heat exchange unit 2 are provided.
The low-temperature cold output water deprived of heat in step 3 is supplied to the indoor heat exchanger 23 of the indoor air conditioner 5 through the cold output water circulation path 25, and exchanges heat with the air blown into the room, and Cool.

[Effects of the Embodiment] As shown in the above embodiment, the hydrogen driving unit α first supplies heated water to the first container S1 in which the high-temperature alloy HM is sealed. As a result, the internal pressure of the first container S1, which was lower than the internal pressure of the third container S3 for enclosing the low-temperature alloy LM, becomes higher than the internal pressure of the third container S3. Thus, after the internal pressure of the first container S1 rises above the internal pressure of the third container S3, the facility water is supplied to the third container S3. At this time, since the pressure difference between the inside of the first container S1 that already releases hydrogen and the inside of the third container S3 that stores hydrogen is large, the high temperature alloy HM in the first container S1 releases hydrogen. And heat is absorbed, and the low-temperature alloy LM in the third container S3 is absorbed.
Even if it absorbs hydrogen and generates heat, the pressure difference is kept large,
As a result, hydrogen transfer can be performed more rapidly than in the past.

In the first cooling / heating section β, first, facility water is supplied to the second container S2 in which the intermediate temperature alloy MM is sealed.
As a result, the internal pressure of the second container S2, which was higher than the internal pressure of the third container S3 for enclosing the low-temperature alloy LM, is increased.
Becomes lower than the internal pressure. Thus, after the internal pressure of the second container S2 drops below the internal pressure of the third container S3, the third container S2
Supply cooling output water to 3. At this time, since the pressure difference between the inside of the third container S3 that already releases hydrogen and the inside of the second container S2 that stores hydrogen is large, the third container S3
The low-temperature alloy LM in the inside releases hydrogen and absorbs heat, and the second container S
Even if the middle temperature alloy MM in 2 absorbs hydrogen and generates heat, the pressure difference is kept large, and as a result, hydrogen transfer can be performed more rapidly than in the past.

Further, in the second cooling / heating output section γ, first, facility water is supplied to the first container S1 in which the high-temperature alloy HM is sealed. As a result, the internal pressure of the first container S1, which was higher than the internal pressure of the second and third containers S2, S3 for enclosing the intermediate temperature alloy MM and the low temperature alloy LM, becomes lower than the internal pressure of the second, third containers S2, S3. As described above, after the internal pressure of the first container S1 falls below the internal pressure of the second and third containers S2 and S3, the cold and hot water is supplied to the second and third containers S2 and S3. At this time, the pressure difference between the inside of the second and third containers S2 and S3, which already release hydrogen, and the inside of the first container S1, which stores hydrogen, is large. Even if the middle-temperature alloy MM and the low-temperature alloy LM in S3 release hydrogen and absorb heat, and the high-temperature alloy HM in the first container S1 absorbs hydrogen and generates heat, the pressure difference is kept large. Hydrogen transfer can be performed more rapidly than in (1).

As described above, in each of the hydrogen driving section α, the first cooling / heating output section β, and the second cooling / heating output section γ, the hydrogen transfer is started in a state where the pressure difference is secured.
The amount of hydrogen transfer within a certain period of time (within the period during which hydrogen transfer is performed) is larger than in the conventional case, and the cooling capacity of the cooling device 1 is improved.

The above effects will be specifically described with reference to FIGS. The graph of FIG. 12 shows that the first cooling output unit β and the second cooling output unit γ
The solid line X1 shows the temperature change of the cold output water when the facility water is first supplied to the hydrogen storage side container, and the cold output water when the heat medium is supplied to the hydrogen storage side and the hydrogen release side simultaneously. Is indicated by a broken line X2. As shown by the solid line X1, by keeping the inside of the vessel in which the hydrogen storage alloy for storing hydrogen is previously sealed lower than the hydrogen storage pressure, when the cold output water is subsequently supplied to the vessel on the hydrogen release side, the hydrogen is released. The discharge takes place rapidly and the temperature of the cold output water drops sharply.
As described above, since the amount of hydrogen transfer within a certain period of time (within the period of performing hydrogen transfer) is larger than that of the conventional method, FIG.
As shown in the figure, compared to the cooling output Y1 at the same time,
By supplying facility water to the container on the hydrogen storage side a predetermined time earlier, the cooling power output increases to Y2. That is, higher cooling efficiency can be obtained at the same time.

[Modification] In the above embodiment, in the hydrogen driving section α, the inside of the container (second container S2) is maintained at a pressure higher than the hydrogen release pressure by the pressurized water, and the hydrogen storage alloy (medium temperature alloy) Although the example in which the hydrogen is released from the MM) is described, the release of the hydrogen from the hydrogen storage alloy (medium-temperature alloy MM) of the container to which the pressurized water is exposed may be performed in the hydrogen driving unit α. In the above embodiment, the second cooling / heating output section γ
In the above, an example was shown in which the inside of the container (third container S3) was kept at a pressure higher than the hydrogen release pressure by the cold output water to release hydrogen from the hydrogen storage alloy (low-temperature alloy LM) of the container. The release of hydrogen from the hydrogen storage alloy (low-temperature alloy LM) of the container that is in contact with the cold output water at the cold output unit γ may be prohibited.

In the above embodiment, the parallel connection supply type in which the heat medium passage 11 in which the heat medium turns and returns inside at the outer peripheral side of the heat exchanger 8 is shown.
As shown in (a), a parallel connection supply type employing a heat medium passage 11 in which the heat medium does not turn may be employed.
Further, a series connection supply type as shown in FIGS. 14B and 14C or a hybrid type of a parallel connection supply and a series connection supply as shown in FIG. 14D may be adopted.

In the above embodiment, a cooling-only device has been described as an example, but it may be applied to a cooling and heating device. As a specific example, the heating water heated by the combustion device 3 may be guided to the indoor heat exchanger 23 of the indoor air conditioner 5 to perform indoor heating. Further, the heating water heated by the combustion device 3 may be connected to a floor heating mat, a bathroom dryer, or the like, and the heating water may be supplied to perform floor heating, bathroom heating, or the like.

In the above embodiment, the pair of plates 12
Although an example is shown in which a plurality of alloy containers are formed in the ring disk R to which the joints 13 are joined, as shown in FIG. 15, a pair of plates may be provided so as to form one alloy container. In other words, one alloy container is composed of a pair of plates, and they are combined in the circumferential direction to form a ring disk. A plurality of the ring disk-shaped alloy containers are laminated in the axial direction to form a cylindrical heat exchanger. The container 8 may be configured. Further, in the above-described embodiment, an example in which the outer peripheral shape of the heat exchanger 8 is provided in a cylinder is shown. However, for example, the outer peripheral shape is provided in a hexagonal cylindrical shape, and a rotation side supply / discharge hole A2 is formed in the center side. A cylindrical hole 8a may be provided.

In the above embodiment, an example has been described in which the heat exchanger 8 is continuously rotated by the rotation driving means. However, the heat exchanger 8 may be intermittently rotated. In the above embodiment, an example is shown in which the rotation axis (distributor 9) of the heat exchanger 8 is arranged horizontally, but it may be arranged vertically or obliquely. Further, the first container S1, the second container S2, and the third container S3
May be changed. In the above embodiment, an example in which a two-stage cycle is used as an example of the heat exchange unit 2 has been described, but a one-stage cycle or a three-stage cycle or more may be used.

In the above embodiment, a multi air conditioner in which a plurality of indoor air conditioners 5 can be connected to one outdoor unit 7 has been described, but an air conditioner in which one indoor air conditioner 5 is connected to one outdoor unit 7 is shown. The present invention may be applied. In the above-described embodiment, an example in which the room is cooled with the heat medium for cooling output (cooling output water in the embodiment) obtained by the heat exchange unit 2 has been described. The present invention may be used as another cooling device, for example, for use in a refrigeration operation. In the above embodiment, an example in which one heat exchange unit 2 (a unit constituted by one distributor 9 and one heat exchanger 8) is used, but a plurality of heat exchange units 2 are used.
To increase the cooling capacity, and may be used for a cooling device requiring a large cooling capacity such as a building air-conditioning system.

In the above embodiment, a gas combustion apparatus for burning gas is used as a heating means for heating a heating medium for heating (heating water in the embodiment). Other combustion devices may be used, heating means for heating the heating medium for heating by exhaust heat of the internal combustion engine, steam by a boiler, heating means using an electric heater,
Other heating means may be used. When utilizing the exhaust heat of the internal combustion engine, it can also be used for vehicles. In the above embodiment, tap water was used as an example of each heating medium.
Another liquid heat medium such as antifreeze or oil may be used, or a gas heat medium such as air may be used.

In the above embodiment, the cooling device that obtains a cold output by the endothermic action when the hydrogen storage alloy releases hydrogen has been described as an example. However, the heat output by the heat dissipation action when the hydrogen storage alloy absorbs hydrogen is described. The present invention may be applied to a heating device (for example, a heating device or the like) that obtains. In the above embodiment, the example in which the heat exchanger 8 rotates and the heat medium is changed has been described.
The heat medium may be provided so as to be switched to the fixed heat exchanger 8. In the above embodiment, the heat exchanger 8 in which the plurality of containers are stacked in the axial direction is shown, but any heat exchanger that exchanges heat between the internal hydrogen storage alloy and the heat medium may be used.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a phase difference between a fixed-side supply / discharge hole and a rotation-side supply / discharge hole (Example).

FIG. 2 is a schematic configuration diagram of a cooling device (Example).

FIG. 3 is a sectional view of a heat exchanger (Example).

FIG. 4 is a plan view of a ring disk (Example).

FIG. 5 is an explanatory view of an alloy storage chamber and a heat medium passage (Example).

FIG. 6 is a PT refrigeration cycle diagram (Example).

FIG. 7 is an explanatory view showing a flow of a heat medium by a distributor (Example).

FIG. 8 is an explanatory diagram of a parallel connection supply and a series connection supply in the distributor (Example).

FIG. 9 is an operation explanatory view of the heat exchange unit (embodiment).

FIG. 10 is a plan view of a ring disk (Example).

FIG. 11 is an explanatory diagram showing a flow of a heat medium in the heat exchanger (Example).

FIG. 12 is a graph showing a change in temperature of cold output water (Example).

FIG. 13 is a graph comparing cooling output (Example).

FIG. 14 is an explanatory diagram showing a flow of a heat medium in a heat exchanger (modification).

FIG. 15 is a plan view of a ring disk (modification).

[Explanation of symbols]

 HM High-temperature alloy (high-temperature hydrogen storage alloy) MM Medium-temperature alloy (medium-temperature hydrogen storage alloy) LM Low-temperature alloy (low-temperature hydrogen storage alloy) S1 First container S2 Second container S3 Third container S4 Hydrogen passage 1 Cooling device 8 Heat exchanger 9 Distributor

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shigeru Kadake 8-4 Koamicho, Nihonbashi, Chuo-ku, Tokyo F-term in Japan Heavy Chemical Industry Co., Ltd. 3L093 NN05 PP07 PP09 PP13 PP19 QQ03 RR01 RR03

Claims (2)

[Claims] 1. A heat utilization system using a hydrogen storage alloy utilizing the heat absorption of a hydrogen storage alloy when hydrogen is released, wherein a plurality of types of hydrogen storage alloys having the same equilibrium hydrogen pressure and different hydrogen equilibrium temperatures are respectively accommodated. A plurality of containers, a hydrogen passage communicating these containers, and a heat medium changing unit that changes the temperature of the heat medium that touches each of the containers to move hydrogen between the containers. The heat medium changing means supplies a heat medium for heating for maintaining the internal pressure higher than the hydrogen release pressure to a container for enclosing a high-temperature alloy that is a hydrogen storage alloy having the same equilibrium hydrogen pressure and a high hydrogen equilibrium temperature, and A vessel for enclosing a low-temperature alloy, which is a hydrogen storage alloy having a low hydrogen equilibrium temperature at the same equilibrium hydrogen pressure as compared to the high-temperature alloy, is supplied with a heat-dissipating heat medium for keeping the internal pressure lower than the hydrogen releasing pressure. From the alloy A container for causing a low-temperature alloy to perform a hydrogen driving process for driving hydrogen, supplying a heat-radiating heat medium for keeping an internal pressure lower than a hydrogen release pressure to a container for enclosing the high-temperature alloy, and enclosing the low-temperature alloy. In order to supply a heating medium for cooling output for keeping the internal pressure higher than the hydrogen release pressure, a cooling output step of moving hydrogen from the low-temperature alloy to the high-temperature alloy is performed.In the hydrogen driving step, A heating medium for heating is supplied to the container enclosing the high-temperature alloy, and after the internal pressure of the container rises above the internal pressure of the container enclosing the low-temperature alloy, a heat-radiating medium is supplied to the container enclosing the low-temperature alloy. A heat utilization system using a hydrogen storage alloy, wherein the heat utilization system is provided. 2. A heat utilization system using a hydrogen storage alloy utilizing heat absorption at the time of releasing hydrogen of the hydrogen storage alloy, wherein a plurality of types of hydrogen storage alloys having different hydrogen equilibrium temperatures at the same equilibrium hydrogen pressure are respectively accommodated. A plurality of containers, a hydrogen passage communicating these containers, and a heat medium changing unit that changes the temperature of the heat medium that touches each of the containers to move hydrogen between the containers. The heat medium changing means supplies a heat medium for heating for maintaining the internal pressure higher than the hydrogen release pressure to a container for enclosing a high-temperature alloy that is a hydrogen storage alloy having the same equilibrium hydrogen pressure and a high hydrogen equilibrium temperature, and A vessel for enclosing a low-temperature alloy, which is a hydrogen storage alloy having a low hydrogen equilibrium temperature at the same equilibrium hydrogen pressure as compared to the high-temperature alloy, is supplied with a heat-dissipating heat medium for keeping the internal pressure lower than the hydrogen releasing pressure. From the alloy A container for causing a low-temperature alloy to perform a hydrogen driving process for driving hydrogen, supplying a heat-radiating heat medium for keeping an internal pressure lower than a hydrogen release pressure to a container for enclosing the high-temperature alloy, and enclosing the low-temperature alloy. In order to maintain the internal pressure higher than the hydrogen release pressure, to supply a heating medium for cooling output, it is provided to perform a cooling output step of moving hydrogen from the low-temperature alloy to the high-temperature alloy, and in this cooling output step, The heat medium for heat dissipation is supplied to the container enclosing the high-temperature alloy, and after the internal pressure of the container falls below the internal pressure of the container enclosing the low-temperature alloy, the heat medium for cooling output is supplied to the container enclosing the low-temperature alloy. A heat utilization system using a hydrogen storage alloy, which is provided so as to be supplied.