JP2000320921A - Heat utilization system utilizing hydrogen occlusion alloy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat utilization system utilizing hydrogen occlusion alloy capable of reducing pressure loss of a heat medium flow by making smooth the heat medium flow in a heat medium passage where it touches a container for flowing the heat medium, and reducing pressure loss of the heat medium flow by securing an opening area of a gateway of the heat medium passage which touches each container and preventing a heat exchanger from being large-sized. SOLUTION: First, second, and third containers S1, S2, and S3 for encapsulating high temperature, middle temperature, and low temperature alloys HM, MM, and LM are constructed with a double tube of a straight outer, inner tubes Ko, Ki, and a heat medium passage 11 is formed inside the inner tube Ki. These members are disposed in parallel to a rotary shaft, and first and second gateways M1', M2' are disposed at axial opposite ends. Hereby, a heat medium smoothly flows in the heat medium passage 11 whereby opening areas of the first and second gateways M1', M2' can be made proper to prevent a surrounding diameter of a heat exchanger from being large sized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for causing a hydrogen storage alloy to repeatedly absorb and release hydrogen, and to reduce the cold output by utilizing an endothermic effect generated when releasing hydrogen or a radiating effect generated when storing hydrogen. The present invention relates to a heat utilization system using the obtained hydrogen storage alloy.

[0002]

BACKGROUND OF THE INVENTION As a heat utilization system utilizing a hydrogen storage alloy, the present inventor applied for a plurality of types of hydrogen storage alloys having the same equilibrium hydrogen pressure and different hydrogen equilibrium temperatures as filed in Japanese Patent Application No. 9-24889. And a method of changing the type of heat medium that touches each container by rotating and moving a plurality of containers connected by a hydrogen passage. This patent application Hei 9-
In the technology filed in Japanese Patent No. 24889, a configuration in which the heat medium flows in a direction perpendicular to the rotation axis is employed. This means
Subsequently, Japanese Patent Application Nos. 10-204079 and 1 filed.
The same applies to 0-359467 and the like, which discloses an embodiment in which the heat medium is flowed in a direction perpendicular to the rotation axis.

[0003]

However, in the case of employing a configuration in which the heat medium is caused to flow in a direction perpendicular to the rotation axis, (a)
When supplying and discharging the heat medium from the outer peripheral side of the rotating container,
(B) When the heat medium is supplied / discharged from the inner peripheral side of the rotating container, and (c) The inner peripheral side (or outer peripheral side) of the rotating container.
From the outside and from the outer periphery (or the inner periphery).

In the above case, in order to equalize the flow area of the heat medium passage through which the heat medium flows by touching the container, the heat medium must be bent so as to be wound around a rotation axis, and the resistance of the heat medium flow increases due to the bending. As a result, a pressure loss occurs, which is a factor of lowering efficiency. Further, when the entrance is provided on the outer peripheral side, it is necessary to provide a pipe for supplying and discharging the heat medium around the rotating body composed of the rotating container, and there is a problem that the diameter of the heat exchanger becomes large due to the assembly of the pipe. . Conversely, when the entrance is provided on the inner peripheral side, the opening area of the entrance is reduced, and a pressure loss occurs due to an increase in the resistance of the flow of the heat medium, which is a factor of deteriorating efficiency. Therefore, when the opening area of the entrance on the inner peripheral side is increased, the diameter of the heat medium distributing means disposed on the inner peripheral side of the rotating body increases, and there is a problem that the diameter of the heat exchanger increases.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to smooth the flow of a heat medium in a heat medium passage through which a heat medium flows by touching a container, thereby reducing the heat medium flow. A hydrogen storage alloy that can reduce pressure loss, optimally secure the opening area of the entrance and exit of the heat medium passage that touches each vessel, reduce the pressure loss of the heat medium flow, and prevent the heat exchanger from increasing in diameter. In providing a heat utilization system utilizing

[0006]

[Means for Solving the Problems] A heat utilization system using a hydrogen storage alloy utilizes heat absorption at the time of release of hydrogen or heat release at the time of hydrogen storage of the hydrogen storage alloy. A plurality of types of hydrogen storage alloys having the same equilibrium hydrogen pressure and different hydrogen equilibrium temperatures are respectively sealed, and a plurality of containers communicated with a hydrogen passage, and the plurality of containers are rotationally moved to heat the respective containers. Heat medium changing means for changing the type of medium, and each of the heat medium passages for flowing the heat medium by touching each of the containers is provided in a straight line parallel to a rotation axis together with the plurality of containers, An inlet / outlet for supplying / discharging the heat medium to / from the heat medium passage is provided at an end of the heat medium passage along the rotation axis.

According to a second aspect of the present invention, in the heat utilization system using the hydrogen storage alloy according to the first aspect, a plurality of cells each including a plurality of containers connected by the hydrogen passage are used around the rotating shaft, and A high-temperature heat medium is supplied to and discharged from the heat medium passage rotating on the center side of the shaft.

[0008]

[Operation and Effect of the Invention] [Operation and Effect of Claim 1] The container for enclosing the hydrogen storage alloy and the heat medium passage for flowing the heat medium by touching the container are formed in a straight line parallel to the rotation axis. Since the heat medium is provided, the flow of the heat medium flows smoothly in the heat medium passage through which the heat medium flows by touching the container. Therefore, the pressure loss of the heat medium flow flowing in the heat medium passage can be reduced, and the efficiency of the heat utilization system using the hydrogen storage alloy can be improved.

[0009] Further, since the inlet / outlet for supplying / discharging the heat medium to / from the heat medium passage is provided at the end of the heat medium passage along the rotation axis, the opening area of the inlet / outlet is made appropriate (for example, the diameter is increased).
Even if the pressure loss of the heat medium flow at the entrance and exit is reduced, since the entrance and exit are in the axial direction of the container and the heat medium passage, it is possible to prevent the heat exchanger from increasing in diameter.

According to the second aspect of the present invention, the high-temperature heat medium is radiated to the surroundings during rotation by supplying / discharging the high-temperature heat medium to / from the heat medium passage rotating around the center of the rotating shaft. The heat loss caused by the heat can be suppressed.

[0011]

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.

A 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 mediums, and heat exchangers 8 disposed at both ends of the heat exchanger 8, respectively. 1 and a second distribution collector 9, 10.
The first and second distribution collectors 9 and 10 constitute heat medium changing means for changing the type of heat medium that touches the first, second and third containers S1, S2 and S3 (described later). Note that the heat exchanger 8 shown in the present embodiment is driven to rotate about the rotation axis to change the type of the heat medium that contacts the first, second, and third containers S1, S2, and S3. FIG. 8 shows a diagram in which the rotation axis is arranged in the vertical direction for convenience.

The heat exchanger 8 shown in this embodiment is constituted by using six cells S as shown in FIG. 1 as shown in FIG. Each of the cells S is the same, and employs a structure in which three double tube cell parts SP are joined. One cell part SP is a combination of an outer tube Ko having a large diameter and an inner tube Ki having a small diameter. Both the outer tube Ko and the inner tube Ki are made of a metal having no hydrogen permeability, such as stainless steel or copper. The outer tube Ko and the inner tube Ki constitute first to third containers S1 to S3 for enclosing the hydrogen storage alloy, and the heat medium passage 11 is formed inside the inner tube Ki. The outer pipe Ko and the inner pipe Ki are both straight pipes,
The third to third containers S1 to S3 and the heat medium passage 11 are provided in a straight line extending in one direction, and are arranged in parallel to the rotation axis.

The outer tube Ko in which the hydrogen storage alloy is sealed
As shown in FIG. 3, the heat of the heat medium transmitted to the inner pipe Ki is efficiently transmitted to the hydrogen storage alloy between the inner pipe Ki and the inner pipe Ki, and the heat generated in the hydrogen storage alloy is efficiently transmitted to the inner pipe Ki. Heat transfer fins F for transmission are arranged. The heat transfer fins F are corrugated fins formed by bending a thin plate of a metal such as copper or aluminum having excellent thermal conductivity in a wave-like manner. The ridges and troughs are arranged along the pipe length, and the heat transfer fins F are disposed between the outer pipe Ko and the inner pipe Ki. Are arranged in a wound state. Thereby, the heat transfer fin F in the double pipe
The ratio of arrangement increases. Further, at least the entire inner peripheral end of the heat transfer fin F is brazed to the inner tube Ki, and the heat transfer between the heat transfer fin F and the inner tube Ki, that is, the hydrogen storage alloy touching the heat transfer fin F and the inner tube The heat transfer with the heat medium flowing in Ki is improved. Note that the heat transfer fins F in this embodiment are provided so that the inner fin pitch and the outer fin pitch are substantially the same in a state of being disposed in the double pipe.

On the other hand, hydrogen sealing caps Kc are joined to both ends of the cell part SP. This cap K
In c, small holes Ka for performing hydrogen transfer between the cap Kc of the adjacent cell part SP and filling with hydrogen are provided. As shown in FIG. 1, a hydrogen passage S4 for transferring hydrogen between containers or a closing lid Kb is attached to the small hole Ka. These outer tube Ko, inner tube Ki, heat transfer fin F, cap Kc
After being assembled, the hydrogen passage S4 is joined by a joining method such as vacuum brazing or welding.

As shown in FIGS. 2 and 4, each cell S has a cell part SP arranged in a substantially rectangular shape when viewed from the axial direction. As a result, the cells S are arranged around the rotation axis of the heat exchanger. Each cell part SP is arranged so as to be wound. Thereby, the space indicated by the heat exchanger is reduced, and as a result, the outdoor unit 7 in which the heat exchange unit 2 is disposed can be downsized.

Of the three cell parts SP constituting the cell S, the first cell part SP is a first container S1 in which a high-temperature alloy HM is sealed, and the second cell part SP is a hydrogen passage S4 in the first container S1. Through the medium temperature alloy MM
Is the second container S2 in which the third cell part S
P is a third container S3 which communicates with the second container S2 via a hydrogen passage S4 and in which a low-temperature alloy LM is sealed.

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 shown in FIG. 9. As for the characteristics of the hydrogen storage alloy, the high temperature alloy HM is on the relatively high temperature side (left side in the drawing), and the low temperature alloy LM is 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 small hole Ka is sealed and sealed with a closing cover Kb.

One end of each of the six cells S is the first distribution collector 9.
Of the second distribution collector 1
0, and the first and second rotating disks 9 are inserted into the second rotating disk 10a.
a, it is provided so as to rotate together with 10a. 6
As shown in FIG. 4, the two cells S and the first and second turntables 9a and 10a are connected to a first fixed plate 9b of the first distribution collector 9.
And the second fixed platen 10b of the second distribution collector 10 are rotatably provided. These rotating bodies are directly or indirectly driven to rotate by an electric motor 13 fixed to a support frame 12, and in this embodiment, a gear 9c formed around a first turntable 9a and an electric motor 13 It is continuously rotated by the electric motor 13 by meshing with the gear 13a.

The structures of the first and second distribution collectors 9 and 10 are shown in FIGS. 1, 4 and 5. FIG. FIG. 5 shows the first and second heat medium grooves M1, M2 formed in the first and second fixed plates 9b, 10b.
FIG. 2 is a perspective view of 2 seen from one direction. The first and second distribution collectors 9 and 10 switch and supply the heat medium that contacts the first to third containers S1 to S3.
By rotating with respect to the fixed platen 9b, the plurality of first heat medium grooves M1 formed in the first fixed platen 9b and the first rotating plate 9a
Of the inner tube Ki of each cell part SP that communicates through
The connection state with the entrance M1 'is switched. Similarly, when the second rotating disk 10a rotates with respect to the second fixed disk 10b, the second rotating disk 10a penetrates through the plurality of second heat medium grooves M2 formed in the second fixed disk 10b and the second rotating disk 10a. The connection state of the inner pipe Ki of each communicating cell part SP with the second entrance / exit M2 'is switched. By these switching, the heat medium that contacts the first to third containers S1 to S3 is switched, and the first to third containers S1 to S3 of each cell S are switched from the hydrogen driving unit α to the first cooling and heating output unit β to the second. The process proceeds to the cooling output section γ (see FIG. 6).

As shown in FIG. 1, the first and second entrances M1 'and M2' are provided on the outer surfaces of the first and second fixed plates 9b and 10b.
A pipe connecting member H communicating with M2 'for supplying and discharging the heat medium is provided, and the first and second entrances M1', M2 are connected by pipes connected to the outer surfaces of the first and second fixed plates 9b, 10b.
The heat medium is supplied and exhausted to the '.

Here, the plurality of first containers S1 rotate on the center side of the rotating shaft, the plurality of third containers S3 rotate on the outer peripheral side of the rotating shaft, and the plurality of second containers S2.
Rotates between the first and third vessels S1 and S3, and is provided so that high-temperature heating water (corresponding to a high-temperature heating medium) is supplied and discharged to the center side of the rotating shaft. (See FIG. 5).

On the other hand, the first and second ports M1 'and M2' provided on the first and second rotating discs 9a and 10a correspond to the ports of the heat medium passage 11, respectively. The first and second ports M1 'and M2' are provided with appropriate opening areas so that pressure loss of the heat medium flow does not occur at M1 'and M2'.

The circumferences of the first and second heat medium grooves M1 and M2 of the first and second fixed plates 9b and 10b are shown in FIG.
As shown in FIG.
The sealing material contact surfaces of the second rotating disks 9a and 10a are mirror-finished. Further, as shown in FIG. 4, a first rotating plate 9a, six cells S, and a first fixed plate 9b sandwiching the second rotating plate 10a.
The second fixed plate 10b is appropriately fastened in the axial direction by one bolt B and nut N to prevent the first and second distribution collectors 9 and 10 from leaking the heat medium.

Next, the hydrogen driving section α, the first cooling output section β, and the second cooling output section γ will be described with reference to the schematic diagram of FIG.
The hydrogen driving part 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 and heating unit β is the third container S3
This is a part for moving the hydrogen that has moved into the second container S2. The second cooling / heating unit γ converts the hydrogen in the second container S2 and a part of the hydrogen remaining in the third container S3 into the first container S1.
The part to be moved to 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 as described above, the first and second fixed plates 9 are provided.
b, 10b, the first and second heat medium grooves M1, M2
Are defined by the range of communication.

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 58 ° C.) is brought into contact with the second container S2, and a third heat radiation water (for example, about 28 ° C.) in contact with the third container S3 is supplied.
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.

Then, by the operation of the electric motor, the first,
The second rotating disks 9a, 10a are the first and second fixed disks 9b, 10b.
b, each first container S1 is placed in the first
Heating zone α1 → First hydrogen transfer restriction zone β1 → First heat dissipation zone γ1
Is repeated, and each second container S2 repeats the second auxiliary heating zone α2 → the second heat radiation zone β2 → the second cooling output zone γ2,
The container S3 is in the third heat radiation area α3 → third cooling / heat output area β3 → third
The cooling output auxiliary area γ3 is repeated.

(Explanation of Combustion Apparatus 3) The combustion apparatus 3 of the present embodiment uses a gas combustion apparatus that burns a gas serving 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 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

The pressurized water supply passage 15 for supplying pressurized water to the second auxiliary heating zone α2 and the first hydrogen transfer restricted zone β1 is branched from the heated water circulation passage 22 as shown in FIG. 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
At which the high-temperature alloy HM does not occlude or release hydrogen) and raise the temperature of the pressurized water in the second auxiliary heating zone α2 to, for example, about 58 ° 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, the electric motor 13 and the electrical functional components of the combustion device 3 (ignition device, gas amount control valve 17, gas on-off valve 18, combustion fan 20, etc., not shown), the indoor fan 24 An operation instruction is given.

(Explanation of 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 (58 ° 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, 58 ° C .: 1.0 MPa in the second container S 2, 28 ° C .: 0.9 MPa in the third container S 3, and the high-temperature alloy HM in the first container S 1 releases hydrogen (FIG. 9). The medium temperature alloy MM of the second container S2 also releases a small amount of hydrogen (FIG. 9 '), and the low temperature alloy LM of the third container S3 absorbs the hydrogen released from the high temperature, medium temperature alloy HM and MM (FIG. 9). . 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 is 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 becomes 13 ° C .: 0.5 MPa, the low-temperature alloy LM in the third container S3 releases hydrogen (FIG. 9), and the medium-temperature alloy MM in the second container S2 absorbs hydrogen (FIG. 9). 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 output section γ, the first container S1 comes into contact with facility water, and the second container S2 and the third container S3
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.
1 and touch the facility water, and the second container S2
The third container S3 touches the cold output water in the third cold output auxiliary area γ3 to contact the first container S1.
Inside: 28 ° C: 0.1 MPa, Inside of the second container S2: 13 ° C:
0.2 MPa, 13 ° C. in the third container S 3: 0.5 MPa
The middle temperature alloy MM in the second container S2 releases hydrogen (FIG. 9), and the low temperature alloy LM in the third container S3 also releases hydrogen ('in FIG. 9), and the high temperature alloy HM in the first container S1. Absorbs hydrogen (of FIG. 9). When the medium-temperature alloy MM in the second container S2 and the low-temperature alloy LM in the third container S3 release hydrogen, the heat is absorbed from the cold output water that touches the second container S2 and the third container S3 by the endothermic effect, and the temperature of the cold output water is increased. Lower. 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 zone β3, the second cooling / heating output zone γ2, and the third cooling / heating output auxiliary zone 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, each cell part SP constituting the cell S is a double tube constituted by a straight outer tube Ko and an inner tube Ki. The tube Ko and the inner tube Ki constitute first to third containers S1 to S3 for enclosing the hydrogen storage alloy, and the heat medium passage 11 is formed inside the inner tube Ki. That is, the first to third containers S1 to S3 and the heat medium passage 11 are provided in a straight line extending in one direction. This linearly extending first
Since the third container S1 to S3 and the heat medium passage 11 are arranged in parallel to the rotation axis, the flow of the heat medium in the heat medium passage 11 flows smoothly. For this reason, the pressure loss of the heat medium flow in the heat medium passage 11 can be reduced, and as a result, the cycle efficiency can be improved, and the efficiency of the cooling device 1 can also be improved.

The first and second ports M1 'and M2' for supplying and discharging the heat medium to and from the heat medium path 11 are provided at both ends of the heat medium path 11 along the rotating shaft, so that the first and second ports are provided. Even if the opening areas of M1 'and M2' are optimized to reduce the pressure loss of the heat medium flow at the first and second entrances M1 'and M2', the first and second entrances M1 'and M2' remain at the first. Since it is in the axial direction of the third container S1 to S3 and the heat medium passage 11, it is possible to prevent the heat exchanger 8 from increasing in diameter. Further, by supplying / discharging high-temperature heating water (high-temperature system) to / from the heat medium passage 11 rotating on the center side of the rotation shaft, heat loss caused by the heat medium of the high-temperature system radiating heat to the surroundings during rotation is suppressed. In addition, if there is any damage, there is no problem that the high-temperature heating water is directly scattered to the surroundings, and the safety is excellent.

On the other hand, since the pressure loss of the heat medium flow in the heat medium passage 11 can be reduced, the heating water circulation pump P 1
In addition, the load of the cooling / heating output water pump P2 and the facility water circulation pump P3 can be reduced. Thus, the heating water circulation pump P1,
By reducing the load of the cooling / heating output water pump P2 and the facility water circulating pump P3, each heat medium drive pump can be reduced in size, and as a result, the outdoor unit 7 equipped with these can be reduced in size and weight.

[Modification] In the above-described embodiment, the container for accommodating the hydrogen storage alloy and the cell part SP constituting the heat medium passage 11 are formed using straight pipes. The cell part SP may have another cross-sectional shape. Further, when the cell part SP is constituted by a plurality of straight pipes as in this embodiment, an example in which one heat medium passage 11 penetrates the inside of the container in the above embodiment has been described. Alternatively, two or more heat medium passages 11 may be penetrated. Furthermore, a configuration is adopted in which a container for storing the hydrogen storage alloy is arranged on the outside and the heat medium flows inside the container. On the contrary, a container for storing the hydrogen storage alloy is arranged on the inside and the heat medium flows outside the container. A configuration may be adopted.

[Modification] In the above embodiment, an example is shown in which the heat medium flows in one direction by arranging the cell part SP formed of a double tube in a straight line. An inlet and an outlet to the passage 11 may be provided on the same side. In this case, one heat exchange unit 2 requires only a pair of a rotating plate and a fixed plate. A specific example will be described with reference to FIGS. As shown in FIG. 10, the inner tube Ki of the cell part SP is provided with a U-turn at one end, and the inlet M1a 'and the outlet M1b' of the inner tube Ki are provided on the same side. Then, the second distribution collector 10 is eliminated, and as shown in FIG. 11, the first distribution collector 9 has heat medium grooves M1a, M1b corresponding to the inlet M1a 'and the outlet M1b' of the inner tube Ki. Is provided. In FIG. 11, the hatched side in the heat medium groove M1 indicates the heat medium groove M1a on the inflow side, and the white side indicates the heat medium groove M1b on the outflow side. Reference numeral M3 in FIG. 10 denotes a communication groove from the heat medium groove M1b to the heat medium groove M1a on the side opposite to the cell part SP of the first fixed plate 9b. In this case, the first fixed plate 9b is connected to the inner fixed plate 9b1 on the inner side (cell part SP side) and the outer fixed plate 9b1
P side), the outer fixed plate 9b2
It is preferable to form a communication groove M3 outside b1 and to close it from the outside with an outside fixed plate 9b2. In the above modified example, it is possible to flow the heat medium in series as shown in FIG.

In the above embodiment, the cooling-only device has been described as an example. However, the device 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, in the hydrogen driving section α, the inside of the container (second container S 2) is kept at a pressure higher than the hydrogen release pressure by the pressurized water, and the hydrogen storage alloy (medium-temperature alloy MM) of the container is used for hydrogen. The example of releasing
In the hydrogen drive unit α, the release of hydrogen from the hydrogen storage alloy (medium temperature alloy MM) of the container to which the pressurized water is in contact may be prohibited. In the above embodiment, in the second cooling output section γ, the inside of the container (third container S3) is maintained at a higher pressure than the hydrogen release pressure by the cold output water, so that the hydrogen storage alloy (low-temperature alloy LM) of the container changes the hydrogen. Although the example in which the hydrogen is released is shown, the release of hydrogen from the hydrogen storage alloy (low-temperature alloy LM) in the container in contact with the cold output water may be prohibited in the second cold output section γ.

In the above embodiment, the example in which the heat exchanger 8 is continuously rotated by the rotation driving means has been described. However, the heat exchanger 8 may be rotated intermittently. In the above embodiment, the rotation axes of the heat exchanger 8 (the first and second distribution collectors 9, 1
Although the example where 0) is arranged horizontally is shown, it may be arranged vertically or obliquely. The first container S1 and the second container S1
The arrangement order of the container S2 and the third container S3 may be modified.
In the above embodiment, as an example of the heat exchange unit 2, 2
An example using a stage cycle has been described.
It may be longer than the stage cycle.

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-described embodiment, an example in which one heat exchange unit 2 (a unit configured by one first and second distribution collectors 9 and 10 and one heat exchanger 8) is used. The cooling capacity is increased by mounting the heat exchange unit 2,
It 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 heat medium (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 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.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view of the heat exchanger (Example).

FIG. 3 is a cross-sectional view of a cell (Example).

FIG. 4 is an exploded perspective view of the heat exchange unit (Example).

FIG. 5 is a diagram showing first and second heat medium grooves (Example).

FIG. 6 is an operation explanatory view showing a relationship between a heat medium and hydrogen transfer (Example).

FIG. 7 is an explanatory view showing a flow of a heat medium to each container (Example).

FIG. 8 is a schematic configuration diagram of a cooling device (Example).

FIG. 9 is a PT refrigeration cycle diagram (Example).

FIG. 10 is a sectional view of a main part of a first distribution collector (modification).

FIG. 11 is a view showing first and second heat medium grooves (modification).

FIG. 12 is an explanatory diagram showing a flow of a heat medium to each container (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 M1 'first entrance M2' second entrance 11 Heat medium passage

Claims (2)

[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 plurality of hydrogen equilibrium temperatures having the same equilibrium hydrogen pressure and different hydrogen equilibrium temperatures are used. A plurality of containers each enclosing a hydrogen storage alloy of a type, and a plurality of containers connected by a hydrogen passage; anda heat medium changing unit that rotates and moves the plurality of containers and changes a type of a heat medium that touches each of the containers. The respective heat medium passages for flowing the heat medium by touching the respective containers are provided in a straight line parallel to the rotation axis together with the plurality of containers, and an inlet / outlet for supplying / discharging the heat medium to / from the heat medium passage is provided by the A heat utilization system using a hydrogen storage alloy, provided at an end of the heat medium passage along a rotation axis. 2. The heat utilization system using a hydrogen storage alloy according to claim 1, wherein a plurality of cells each comprising a plurality of containers connected by the hydrogen passage are used around the rotation shaft, and a center side of the rotation shaft is provided. A heat utilization system using a hydrogen storage alloy, wherein a high-temperature heat medium is supplied to and discharged from the rotating heat medium passage.