JP2000186869A - Heat utilization system utilizing hydrogen-storage alloy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat utilization system utilizing hydrogen-storage alloy which does not incur the fragility breakage caused by hydrogen, even if stainless material excellent in pressure resistance is used as an alloy container to accommodate hydrogen-occluding alloy. SOLUTION: A heat exchanger 8 is one where ring discs R in each of which a plurality of alloy storage rooms 10 are made radially by a pair of plates 12 and 13 are stacked, and copper layers are made at the inner surface of the alloy storage room (the first to third containers S1-S3) that hydrogen touches. This copper layer is one being made by surplus brazing material, though copper is used excessively as brazing material for joining a pair of plates 12 and 13 with each other, depositing within the alloy container at brazing. Since the copper layer does not suffer brittle fracture due to hydrogen, so the life of the heat exchanger 8 can be elongated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrogen storage alloy which repeatedly absorbs and desorbs hydrogen to obtain a cold output by utilizing an endothermic effect generated at the time of releasing hydrogen, or to radiate heat at the time of storing hydrogen. The present invention relates to a heat utilization system using a hydrogen storage alloy that obtains a thermal output using an action.

[0002]

2. Description of the Related Art A heat utilization system using a hydrogen storage alloy is provided with a heat exchanger for exchanging heat between the hydrogen storage alloy and a heat medium. This heat exchanger includes an alloy container that stores a hydrogen storage alloy. This alloy container requires pressure resistance,
Stainless steel is generally used.

[0003]

Since the inside of the alloy container is exposed to hydrogen, if the heat utilization system using the hydrogen storage alloy is used for a long period of time, the stainless steel constituting the alloy container is brittlely broken by hydrogen. May occur, which hinders a longer life.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a brittle fracture due to hydrogen even when a stainless steel material having excellent pressure resistance is used as an alloy container for storing a hydrogen storage alloy. It is an object of the present invention to provide a heat utilization system using a hydrogen storage alloy that does not cause the heat.

[0005]

[Means for Solving the Problems] A heat utilization system using a hydrogen storage alloy utilizes the heat absorption of the hydrogen storage alloy when releasing hydrogen or the heat radiation when storing hydrogen. Further, a copper layer is provided on the inner surface of the stainless steel alloy container for storing the hydrogen storage alloy.

According to a second aspect of the present invention, in the heat utilization system using the hydrogen storage alloy according to the first aspect, the copper layer comprises:
It is characterized by being provided by a copper vapor deposition technique.

According to a third aspect of the present invention, in the heat utilization system using the hydrogen storage alloy according to the second aspect, the alloy container is provided by joining a pair of plates, and the pair of plates is formed of a brazing material made of copper. Being joined, the copper layer uses excess brazing material for the joining, and the excess brazing copper is deposited on the inner surface of the alloy container during brazing. .

According to a fourth aspect of the present invention, in the heat utilization system utilizing a hydrogen storage alloy according to the second aspect, the alloy container uses a clad material in which a copper foil is joined to a stainless steel plate, and the copper foil is formed of a high-temperature copper foil. The alloy is melted below and deposited on the inner surface of the alloy container.

According to a fifth aspect of the present invention, in the heat utilization system using the hydrogen storage alloy according to the fourth aspect, the alloy container is provided by joining a pair of plates made of the clad material. At the time of joining, the copper foil is diverted as a brazing material.

[0010]

[Operation and Effect of the Invention] The copper layer provided on the inner surface of the alloy container is not brittlely broken by hydrogen. Therefore, the stainless material constituting the alloy container is protected by covering the inner surface with the copper layer, so that it will not be brittlely damaged by hydrogen even when used for a long time. For this reason, the durability of the alloy container can be increased,
The life of a heat utilization system using a hydrogen storage alloy can be extended.

Since the copper layer is provided on the inner surface of the alloy container by the vapor deposition technique, the copper layer can be reliably formed on all the inner surfaces of the alloy container.

According to the third aspect of the present invention, a copper layer can be deposited on the inner surface of the alloy container by using a brazing material for joining a pair of plates constituting the alloy container.

According to the fourth and fifth aspects of the present invention, since the clad material in which the copper foil is bonded to the stainless steel plate is used, the man-hour for manufacturing the alloy container can be reduced, and the assembling work can be easily performed. Can be.

[0014]

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.
The cooling device 1 of the present embodiment uses a two-stage cycle as an example of the heat exchange unit 2 using a hydrogen storage alloy.

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.

(Explanation 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 shown in the present embodiment has a cylindrical shape and is provided so as to rotate around a columnar distributor 9 arranged in a horizontal direction (for convenience, in FIG. 9, the distributor is used). 9 shows a diagram arranged vertically.)

The heat exchanger 8 is formed by stacking a number of flat ring disks R as shown in FIG. 1 and FIG. 2, and one ring disk R contains a hydrogen storage alloy inside. Flat alloy storage chamber 10 to be stored (refer to hatching in FIG. 3A, first to third containers S1 to S3 described later)
複数 are radially arranged to form a heat medium passage 11 {see the hatching in FIG. 3B} between the alloy container (a container constituting the alloy storage chamber 10) and the alloy container in the stacking direction. is there.

One ring disk R is formed by opposing and joining a pair of plates 12 and 13 (see FIG. 1) obtained by press-forming a stainless steel plate. A recess for forming the alloy containing chamber 10 is formed on one surface, and a recess for forming the heat medium passage 11 is formed on the other surface. And the heat exchanger 8
As shown in FIG. 1, a large number of ring disks R composed of a pair of plates 12 and 13 are stacked, and a connecting pipe S5 and an end closing lid S6 for securing a hydrogen passage S4 are attached to the outer end of the alloy container. At the same time, a cylindrical pipe S7 for a sliding contact seal of the distributor is assembled on the inner periphery and joined by a joining method such as vacuum brazing or welding. The cylindrical pipe S
7 has a fixed-side supply / drain hole A formed in the outer peripheral surface of the distributor 9.
1 (to be described later), each heat medium passage 11 in the heat exchanger 8
A rotation-side supply / discharge hole A2 (described later) for supplying and discharging a heat medium to and from the heat transfer medium is formed.

Here, the ring disk R (a pair of plates 12 and 13), the connecting pipe S5, the end closing lid S6, and the cylindrical pipe S7 constituting the heat exchanger 8 are all provided by stainless steel. A copper layer of several μm to several tens μm is provided on the inner surface of the alloy container (in the alloy accommodating chamber 10) that is in contact with hydrogen, the inner surfaces of the connection pipe S5 and the end closing lid S6. This copper layer is provided by a vapor deposition technique, and in this embodiment, a pair of plates 12, 1 and 1 is provided.
In addition to using copper as a brazing material for joining the joints 3, an excessive amount of brazing material is used for joining, so that the excess amount of copper is used to braze the inner surface of the alloy container (in the alloy storage chamber 10).
It is formed by vapor deposition on the inner surfaces of the connecting pipe S5 and the end closing lid S6.

The copper may be plated in advance by electroplating on the joining surface of the pair of plates 12 and 13 before brazing, or copper foil may be sandwiched between the joining surfaces of the pair of plates 12 and 13. And brazing may be performed by forming a pair of plates 12 and 13 with a clad material in which a copper foil is joined to a stainless steel plate. In these cases, the number of work steps can be reduced by increasing the copper plating thickness or copper foil thickness and diverting part of the plated copper or copper foil as a brazing material when joining the pair of plates 12 and 13. .

The number of alloy containers formed on one ring disk R is 2 × when the heat exchange unit 2 is a one-stage cycle.
n (n = positive integer), and 3 × for a two-stage cycle
n, and 4 × n for a three-stage cycle. In this embodiment, an example is shown in which a two-stage cycle is adopted and six alloy containers are formed on one ring disk R. 1
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 heat exchange unit 2 of this embodiment uses a two-stage cycle as described above, and an alloy container formed by stacking a number of ring disks R is filled with a high-temperature alloy HM. The first container S1 communicates with the first container S1 through a hydrogen passage S4, and the second container S2 in which the intermediate temperature alloy MM is sealed. The second container S2 communicates with the second container S2 through a hydrogen passage S4. The third container S3 in which the alloy LM is sealed is classified.

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. 10. The characteristics of the hydrogen storage alloy are relatively high on the high temperature side (left side in the drawing), high temperature alloy HM, low temperature side is low temperature alloy LM, Middle temperature alloy MM is between the two.
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 so as 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. 8).

The hydrogen driving unit α is a unit for forcibly moving the hydrogen in the first container S1 into the third container S3, and the first cooling / heating unit β is a unit for transferring the hydrogen transferred into the third container S3 to the second container S3. S2
The second cooling output unit γ is the second container S2
This is a part for moving the hydrogen transferred into the first container S1. The hydrogen drive unit α, the first cooling output unit β, and the second cooling output unit γ are provided at approximately 120 ° intervals, and each fixed-side supply / discharge hole A 1 formed on the outer peripheral surface of the distributor 9. (Described later).

The hydrogen driving section α is provided with a heating zone α 1 to which heated water (for example, about 80 ° C.) that comes into contact with the first container S 1 is supplied.
A second pressure increasing region α2 to which pressurized water (for example, about 56 ° C.) contacting the second container S2 is supplied, and a third heat releasing region α3 for supplying radiating water (for example, approximately 28 ° C.) to contact the third container S3.
Is provided. The first cooling / heat output section β is supplied with a first pressurized region β1 in which pressurized water (for example, about 58 ° C.) is brought into contact with the first container S1, and a facility water (for example, about 28 ° C.) in contact with the second container S2. The second heat radiation area β2 is supplied, and the third heat supply water (for example, about 13 ° C.) contacting the third container S3 is supplied.
It has a cooling output area β3. The second cooling output section γ is provided with a first radiating zone γ1 to which radiating water (for example, about 28 ° C.) that comes into contact with the first container S1 and a cold output water (for example, about 13 ° C.) that comes into contact with the second container S2. The second cooling power output area γ to be supplied
2 is provided. The temperature of the heat medium in contact with the third container S3 in the second cold / hot output section γ is not questionable, and this portion is referred to as an unquestionable area γ3.

Then, when the heat exchanger 8 is rotated by the rotation driving means, the group of the first containers S1 is heated to the heating zone α1 →
The first step-up region β1 → the first heat radiation region γ1 is repeated, and the group of the second containers S2 repeats the second step-up region α2 → the second heat radiation region β2 → the second cooling / heat output region γ2, and the third container S3 is the third container S3. The third heat radiation area α3 → the third cooling / heat output area β3 → the non-interest area γ3 is repeated.

Next, delivery of the heat medium between the distributor 9 and the heat exchanger 8 will be described. As shown in FIG. 6, 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

As shown in FIGS. 6 and 7 (b), the distributor 9 of this embodiment has first to third containers S1 to S3.
FIG. 7 (a) shows a series connection supply type for supplying a heat medium in series to the first to third containers S1 to S1.
3, a parallel connection supply type for supplying a heat medium in parallel may be adopted. Such a change of the series connection and the parallel connection can be easily made by changing the first to third blocks 9a to 9c. When the temperature change of the heat medium is cumulative by setting the series connection and the parallel connection. (Serial connection) and uniform (parallel connection) can be selected, and it becomes possible to supply the heat medium of the optimum temperature to the first to third vessels S1 to S3 of the heat exchanger 8.

Each of the first to third blocks 9a to 9c is disposed in correspondence with the hydrogen driving section α, the first cooling output section β, and the second cooling output section γ. Is formed with a fixed supply / discharge hole A1 for supply / discharge. Each fixed side supply / discharge hole A1 will be specifically described with reference to FIG.

In the first block 9a, 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 heating zone α1, and shifted to the first boosting zone β1. A fixed-side supply / discharge hole A1 for supplying / discharging pressurized water to / from the heat medium passage 11 between the first containers S1, and a first heat transfer region .gamma.1
A fixed-side supply / discharge hole A1 for supplying / discharging facility water is formed in the heat medium passage 11 between the containers S1. Second block 9b
The fixed side supply / discharge hole A1 for supplying / discharging the pressurized water to / from the heat medium passage 11 between the second containers S2 shifted to the second pressure increasing region α2.
A fixed-side supply / discharge hole A1 for supplying / discharging facility 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 A for supplying / discharging the cold output water to / from the heat medium passage 11 between the second containers S2 shifted to the second cold output range γ2.
1 is formed. In the third block 9c, a fixed-side supply / discharge hole A1 for supplying / discharging facility water to / from the heat medium passage 11 between the third containers S3, which has shifted to the third heat radiation area α3, and a third cold heat output area β3. A fixed-side supply / discharge hole A1 for supplying / discharging cold-heat output water to / from the heat medium passage 11 between the third containers S3,
The fixed-side supply / discharge hole A for supplying / discharging unrequired water not involved in hydrogen transfer to the heat medium passage 11 between the third containers S3 shifted to the third position.
1 is formed. 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.

A pipe for supplying and discharging the heat medium to and from the heat exchanger 8 is connected to an end of the distributor 9. In this embodiment, as shown in FIG. 6, a pipe for a high-temperature heat medium (heated water, pressurized water) is connected to one end (left side in FIG. 6) of the distributor 9, and the other end ( A pipe for a low-temperature heat medium (radiation water, cold heat output water, unquestioned water) is connected to (right side in FIG. 6). in this way,
By setting the piping connected to the distributor 9 to a high-temperature system at one end of the distributor 9 and a low-temperature system to the other end, heat exchange occurs between the high-temperature heat medium and the low-temperature heat medium, and heat loss occurs. Defects can be suppressed. In this embodiment, an example in which pipes for supplying and discharging the heat medium are connected to both ends of the distributor 9 is shown. May be reduced.

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. Since the heat exchanger 8 of the present embodiment is formed by laminating a number of ring disks R each having six alloy containers formed in the circumferential direction, the first container S1 adjacent in the laminating direction is formed.
Are arranged in the circumferential direction around the first block 9a, and the group of second containers S2 adjacent in the stacking direction is arranged in the circumferential direction around the second block 9b. Six groups of adjacent third containers S3 are circumferentially arranged around the third block 9c. For this reason, the cylindrical pipe S7 is provided with a total of 12 rotary side supply / discharge holes A2 on the supply side and the discharge side for the six groups of the first container S1,
A total of 12 rotation-side supply / discharge holes A2 are formed for the six groups of the second container S2 on the supply side and the discharge side.
For the six groups of containers S3, a total of 12 rotary side supply / discharge holes A2 are formed on the supply side and the discharge side. 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 adjacent alloy containers in the stacking direction, and the first, second, and third alloy containers S1, S2 are formed in the alloy containers.
, S3 are provided with through-holes A3 penetrating in the stacking direction in the respective ranges.
3 and communicate with the adjacent heat medium passage 11. In the heat exchanger 8 of this embodiment, the heat medium supplied from the supply side of the rotation side supply / discharge hole A2 of the cylindrical pipe S7 into the heat exchanger 8 is distributed and supplied to each heat medium passage 11. The supply type is adopted. For this reason, each alloy container has a through hole A3 for supplying the heat medium and a through hole A3 for discharging the heat medium.
Both are formed. The heat exchanger 8 includes a ring disk R1 (see FIG. 4A) in which both a through hole A3 for supplying a heat medium and a through hole A3 for discharging a heat medium are formed in each alloy container, and a first container. A ring disk R2 without a through hole A3 used for partitioning the boundary between the group of S1 and the group of the second container S2 and the boundary between the group of the second container S2 and the group of the third container S3 (see FIG. 4 and b).

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. 5) of the rotation-side supply / discharge hole A2 exchanges heat through the heat medium supply through-hole A3 which communicates with each heat medium passage 11. 5 flows in the axial direction of the vessel (downward in FIG. 5), and passes through each of the heat medium passages 1 through the through holes A3 for supplying the heat medium.
1 and distributed. 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. In the axial direction (downward in FIG. 5). Then, the heat medium flowing downward in FIG. 5 is supplied to the rotary side supply / discharge holes A2 by the heat medium discharge through holes A3.
From the discharge side (the lower side in FIG. 5) of the distributor 9
It is discharged to 1 (discharge side). 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.

(Explanation of other components in heat exchange unit 2) Reference numeral 15 shown in FIG.
The pressurized water is circulated by a pressurized water circulation pump P1 'provided in the pressurized water circulation path for circulating pressurized water to the second pressurized region α2. The pressurized water uses water whose temperature has risen due to heat transfer from the first vessel S1 whose temperature has risen in the heating zone α1, and the temperature of the pressurized water in the first booster zone β1 during the operation of the heat exchange unit 2. Is about 58.degree. C., for example, and the temperature of the pressurized water in the second pressure increasing region .alpha.2 is about 56.degree.

(Explanation of Combustion Apparatus 3) The combustion apparatus 3 of this embodiment uses a gas combustion apparatus that burns gas as a fuel to generate heat, 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 supplied to the heating zone α1 through the heating water circulation path 22 provided with the heating water circulation pump P1. Is what you do. The heated water circulation pump P1 of this embodiment is the same as the pressurized water circulation pump P1 '
Is a tandem pump driven by a dual-purpose motor. For this reason, when the heating water is supplied from the combustion device 3 to the heat exchange unit 2, the pressurized water is also provided so as to circulate.

(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 (corresponding to an output pump) 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 facility-type water-cooled or air-cooled facility in which facility water (heat medium for heat dissipation) exchanges heat without contacting air. Cooling 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 heated water circulation pump P1 (pressurized water circulation pump P1 '), cooling / heat output water pump P2, facility water circulation pump P3, water supply valves T4, T5, T6, facility water cooling means 4 and the electric functional components of the combustion device 3 (ignition device, gas control valve 17, gas on-off valve 1 not shown)
8, the combustion fan 20, etc.), and also gives an instruction to the indoor air conditioner 5 to operate the indoor fan 24.

(Explanation of the operation of the cooling operation) The cooling device 1 described above
The operation of the cooling operation by 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 controller 6
The combustion device 3, the rotation driving means, the radiating fan and the heated water circulation pump P1 (the boosted water circulation pump P1 '), the cooling / heating output water pump P2, and the facility water circulation pump P3 are operated, and the indoor fan of the indoor air conditioner 5 instructed to perform cooling. 24
Turn 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 a heating zone α1 →
It moves in the order of the first step-up region β1 → the first heat radiation region γ1,
The containers S2 move in the order of the second pressure increasing region α2 → the second heat radiation region β2 → the second cooling power output region γ2, and each of the third containers S3 moves in the order of the third heat radiation region α3 → the third cooling / heat output region β3 → the interrogation region γ3. Move in order.

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 rises to a pressure at which the intermediate temperature alloy MM does not absorb 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 touches the heated water in the heating zone α1, the second container S2 touches the pressurized water in the second boosting zone α2, and the third container S3 sets the radiating water in the third radiating zone α3. The first container S1 at 80 ° C .: 1.0MP
a, 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. 10). The low-temperature alloy LM in the container S3 stores hydrogen (FIG. 10).
The second container S2 is heated by the pressurized water and has a high internal pressure, and the medium temperature alloy MM does not occlude hydrogen. And
After passing through the hydrogen drive 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 rises to a pressure at which the high-temperature alloy HM does not absorb 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. When the cold output water is about 13 ° C., the internal pressure of the third container S3 is lower than that of the second container S3.
It is provided to be higher than the internal pressure of 2.

As described above, the first container S1 is placed in the first pressure increasing region β.
1 touches the pressurized water, the second container S2 touches the facility water in the second heat radiation zone β2, and the third container S3 touches the cold heat output water in the third cold heat output zone β3. ° C:
0.5MPa, 28 ° C in the second container S2: 0.4MP
a, 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. 10), and the medium-temperature alloy MM in the second container S2 absorbs hydrogen (FIG. 10). 10). 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 is heated by the pressurized water and has a high internal pressure, and the high-temperature alloy HM does not occlude hydrogen. And
After passing through the first cooling / heating output section β, it moves to the second cooling / heating output section γ.

When the operation shifts to the second cooling output section γ, the first container S1 comes into contact with the facility water, the second container S2 comes into contact with the cold output water, and the third container S3 comes into contact with the unaffected water. When the first container S1 comes into contact with facility water (28 ° C.), the internal pressure of the first container S1 decreases, the high-temperature alloy HM absorbs hydrogen, and the second container S1 absorbs hydrogen.
2 Medium temperature alloy MM releases hydrogen. Since the middle temperature alloy MM releases hydrogen, heat is absorbed in the second container S2, and the second
The cold output water touching the container S2 is cooled to, for example, 7 ° C. The medium-temperature alloy MM is provided so that the internal pressure of the second container S2 is 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 unquestioned, and the second container S2
The middle temperature alloy MM releases hydrogen (FIG. 10), and the high temperature alloy HM of the first container S1 stores hydrogen (FIG. 10). When the medium temperature alloy MM in the second container S2 releases hydrogen, heat is taken from the cold output water that comes into contact with the second container S2 by an endothermic action to lower the temperature of the cold output water. The third
The temperature of the container S3 is irrelevant and the low temperature alloy L of the third container S3
M does not occlude hydrogen. And the second cooling / heating output section γ
, Then moves to the hydrogen drive unit α.

The low-temperature cold output water deprived of heat in the third cold output area β3 and the second cold output area γ2 of the heat exchange unit 2 passes through the cold output water circulation path 25 to the indoor air conditioner 5 in the room. The air is supplied to the heat exchanger 23 and exchanges heat with air blown into the room to cool the room.

[Effects of Embodiment] As shown in the above embodiment, the inner surface of the alloy container (the alloy storage chamber 10
Inner), a copper layer of several μm to several tens μm is formed on the inner surfaces of the connecting pipe S5 and the end closing lid S6. The copper layer is not brittlely broken by hydrogen. Accordingly, the stainless steel material forming the alloy container, the connecting pipe S5 and the end closure lid S6 is protected by covering the inner surface with a copper layer, so that it will not be brittlely damaged by hydrogen even if used for a long time. . For this reason, the durability of the heat exchanger 8 that contacts the hydrogen can be increased, and the durability of the cooling device 1 can be improved.

[Modification] In the above embodiment, an example in which a copper material is vapor-deposited to form a copper layer has been described. However, a stainless steel material (a clad material in which a copper foil is bonded, The plates 12 and 13 may be joined with a brazing material having a melting point lower than that of copper using a copper-plated stainless steel material or the like. As described above, the copper layer may be formed in the alloy container using a technique other than the vapor deposition.

In the above embodiment, the pair of plates 12
13 shows an example in which a plurality of alloy storage chambers 10 are formed. However, as shown in FIG.
3, one alloy storage chamber 10 is formed, a plurality of the alloy storage chambers 10 are arranged around the rotation shaft and provided in a flat disk shape, and alloy containers are stacked in the axial direction to form a cylindrical heat exchanger. 8 may be manufactured. In addition, the pair of plates 12 and 13 forming each of the alloy accommodating chambers 10 are only in contact in the circumferential direction and are not welded. By providing the heat exchanger 8 in this manner, during manufacture of the heat exchanger 8, a disc error is absorbed between a pair of circumferentially adjacent plates 12 and 13, and as a result, the cylindrical heat exchanger 8 can be easily manufactured. Can be manufactured.

In the above embodiment, the cylindrical heat exchanger 8 having a circular outer periphery is shown. However, a hexagonal prism-shaped heat exchanger 8 having a hexagonal outer periphery is provided, and the rotating side is provided at the center side. A cylindrical pipe S7 having a supply / discharge hole A2 may be provided.

In the above-described embodiment, an example is shown in which the parallel connection supply type in which the heat medium passage 11 in which the heat medium turns and returns inward on the outer peripheral side of the heat exchanger 8 is employed.
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. 12B and 12C or a hybrid type of parallel connection and series connection as shown in FIG. 12D may be adopted. In the above example,
Although the example in which the present invention is applied to the heat exchanger 8 in which the flat ring disks R are stacked is shown, the present invention is also applicable to a fin-type heat exchanger in which alloy containers are radially arranged along the rotation axis. good.

In the above embodiment, the cooling-only device has been described as an example, but the invention may be applied to a cooling-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 example in which the heat exchanger 8 is continuously rotated by the rotation driving means has been described, but 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 modified so that the heat exchange unit is also effective for switching the heat medium that contacts each alloy container.

In the above embodiment, an example is shown in which the heating medium (in the embodiment, pressurized water) whose temperature has been raised by cooling the first container S1 whose temperature has been raised in the heating zone α1 has been used as the heating medium for raising the pressure. However, heating means (for example, temperature rise by a combustion device,
A heat medium whose temperature has been increased by an electric heater, a temperature increase using exhaust heat, or the like may be used. 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. However, the heat exchange unit 2 may be used in a one-stage cycle, or may be used as a three-stage cycle or more.

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. However, 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 device 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 an endothermic action when the hydrogen storage alloy releases hydrogen is described as an example, but a heating apparatus that obtains a thermal output by a heat dissipation action when the hydrogen storage alloy absorbs hydrogen is described. The present invention may be applied to a device (for example, a heating device).

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a heat exchanger (Example).

FIG. 2 is a plan view of a ring disk (Example).

FIG. 3 is an explanatory view of an alloy storage chamber and a heat medium passage (Example).

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

FIG. 5 is an explanatory diagram showing a flow of a heat medium in a heat exchanger (Example).

FIG. 6 is an explanatory view showing a flow of a heat medium by a distributor (Example).

FIG. 7 is an explanatory diagram of a parallel connection supply and a series connection supply in the distributor (Example).

FIG. 8 is an operation explanatory view of the heat exchange unit (embodiment).

FIG. 9 is a schematic configuration diagram of a cooling device (Example).

FIG. 10 is a PT refrigeration cycle diagram (Example).

FIG. 11 is a plan view of a ring disk (modification).

FIG. 12 is an explanatory diagram showing a flow of a heat medium in a heat exchanger (modification).

[Explanation of symbols]

 HM High temperature alloy (hydrogen storage alloy) MM Medium temperature alloy (hydrogen storage alloy) LM Low temperature alloy (hydrogen storage alloy) S1 First container (alloy container) S2 Second container (alloy container) S3 Third container (alloy container) 8 Heat Exchanger 12, 13 A pair of plates

Claims (5)

[Claims] 1. A heat utilization system using a hydrogen storage alloy utilizing heat absorption when releasing hydrogen from a hydrogen storage alloy or heat release when storing hydrogen, wherein a stainless steel alloy containing the hydrogen storage alloy is used. A heat utilization system using a hydrogen storage alloy, wherein a copper layer is provided on an inner surface of the container. 2. The heat utilization system using a hydrogen storage alloy according to claim 1, wherein the copper layer is provided by a copper vapor deposition technique. 3. The heat utilization system using a hydrogen storage alloy according to claim 2, wherein the alloy container is provided by joining a pair of plates, and the pair of plates are joined by using a copper material as a brazing material. The copper layer uses an excess amount of the brazing material for the joining, and a hydrogen-absorbing alloy characterized in that excess brazing material copper is provided by vapor deposition on the inner surface of the alloy container during brazing. Heat utilization system used. 4. The heat utilization system using a hydrogen storage alloy according to claim 2, wherein the alloy container uses a clad material in which a copper foil is joined to a stainless steel plate, and the copper foil is melted at a high temperature. A heat utilization system using a hydrogen storage alloy, which is deposited on an inner surface of the alloy container. 5. The heat utilization system using a hydrogen storage alloy according to claim 4, wherein the alloy container is provided by joining a pair of plates made of the clad material, and when joining the pair of plates, A heat utilization system using a hydrogen storage alloy, wherein the copper foil is diverted as a brazing material.