JP6798115B2 - Chemical heat storage reactor and chemical heat storage system - Google Patents

Description

The present invention relates to a chemical heat storage reactor and a chemical heat storage system that store heat by a chemical reaction.

In the configuration described in Patent Document 1, a laminated body of a chemical heat storage reactor is formed by laminating a heat storage material layer, a filter, a reaction medium diffusion layer, and a heat exchange portion, and a plurality of the laminated bodies are laminated. The laminated unit is housed in the container.
On the outside of the side surface of the laminating unit, a heat medium flow path such as a pipe for supplying a heat medium from the outside is provided to the heat exchange portion. Further, the heat storage material layer, the filter, the reaction medium diffusion layer, and the heat storage material layer, the filter, and the reaction medium diffusion layer are restrained members arranged outside the lamination unit so that the filter, the reaction medium diffusion layer, and the heat exchange portion are not deformed by the expansion force in the lamination direction generated by the heat storage material. And the heat exchange part is restrained.

Japanese Unexamined Patent Publication No. 2014-126293

By the way, if a heat medium flow path such as a pipe for supplying a heat medium from the outside is provided on the outside of the side surface of the laminated unit, the heat medium flow path such as a pipe protrudes from the side surface of the laminated unit. Therefore, in order to prevent the heat medium flow path from hitting the inner surface of the container, it is necessary to increase the size of the container, and the internal volume of the container becomes large. As the internal volume of the container increases, the heat storage density, which is the amount of heat storage of the heat storage material in the internal volume of the container, decreases.
Further, since it is necessary to attach the heat medium flow path and the restraining member to the laminated body, the number of parts is large and the weight is increased.

An object of the present invention is to increase the heat storage density and reduce the weight in a chemical heat storage reactor and a chemical heat storage system.

The chemical heat storage reactor according to claim 1 is one of a heat storage material layer and the heat storage material layer in which a heat storage material that expands by combining with a reaction medium and generates heat or desorbs the reaction medium to store heat is arranged inside. A reaction medium diffusion layer arranged on the side through which the reaction medium flows, a filter arranged between the heat storage material layer and the reaction medium diffusion layer and having a plurality of pores formed therein, and the filter of the heat storage material layer. Is laminated on the opposite side and includes a first heat exchange portion having a space for a heat medium to flow inside, and the laminated body on the opposite side of the first heat exchange portion. The heat storage material layer, the reaction medium diffusion layer, and the filter are sandwiched between the heat storage material layer and the first heat exchange unit, and a space through which the heat medium flows is provided, and the heat storage is provided by the heat medium. A laminated unit including a second heat exchange unit that supplies heat to the material and recovers heat from the heat storage material, and a container that houses the laminated unit are laminated. The heat storage material layer, the reaction medium diffusion layer, and the filter are penetrated to connect the first heat exchange unit and the second heat exchange unit, and the inside of the first heat exchange unit is inside. The space is communicated with the internal space of the second heat exchange unit, and the heat from the outside of the laminate with respect to the internal space of the first heat exchange unit and the internal space of the second heat exchange unit. A first restraint member provided with a heat medium flow path for allowing a medium to enter and exit is provided, and the first restraint member penetrates the heat storage material layer, the reaction medium diffusion layer, and the central portion of the filter, and the first restraint member. The central portion of the first heat exchange portion and the central portion of the second heat exchange portion are connected .

In the laminated unit of claim 1, a heat storage material layer, a reaction medium diffusion layer, and a filter are arranged between the first heat exchange section and the second heat exchange section. When the heat storage material of the heat storage material layer expands, the expansion force of the heat storage material is transmitted in the stacking direction. However, since the first heat exchange section and the second heat exchange section located on both sides of the heat storage material in the stacking direction are connected by the first restraint member, the tensile strength of the first restraint member in the stacking direction is utilized. Therefore, it is suppressed that the first heat exchange section and the second heat exchange section are separated in the stacking direction, that is, the distance between the first heat exchange section and the second heat exchange section is widened. To. Further, deformation of the filter, the reaction medium diffusion layer, etc. arranged between the first heat exchange part and the second heat exchange part is also caused by the first heat exchange part and the first heat exchange part arranged on both sides in the stacking direction. It is suppressed by the heat exchange section of 2.

Further, in the laminated unit of claim 1, since the first restraint member is not arranged outside the side surface of the laminated unit and penetrates the heat storage material layer, the reaction medium diffusion layer, and the filter, the side surface of the laminated unit. The space between the container and the inner surface of the container can be narrowed, and the container accommodating the laminating unit can be made smaller to reduce the internal volume of the container. As a result, the heat storage density, which is the amount of heat stored in the heat storage material in the internal volume of the container, can be increased.

Further, in the laminated unit of claim 1, the first restraining member functions as a heat medium flow path for supplying a heat medium from the outside to the first heat exchange part and the second heat exchange part, and a heat storage material. Since it has a function as a restraining member for restraining the layer, the filter, and the reaction medium diffusion layer by the heat exchange portion, it is compared with the case where the heat medium flow path and the restraining member are composed of separate parts. The number of parts is reduced, and the weight can be reduced.

The heat storage material of the heat storage layer tends to have a large expansion force at the center when viewed from the stacking direction. In the chemical heat storage reactor according to claim 1 , the first restraint member penetrates the heat storage material layer, the reaction medium diffusion layer, and the central portion of the filter, and the central portion of the first heat exchange portion and the second. Since it is connected to the central part of the heat exchange part and is arranged corresponding to the part of the heat storage material layer where the expansion force of the heat storage material is large, it is possible to effectively suppress the deformation of the member adjacent to the heat storage material. it can.

According to a second aspect of the invention, the chemical heat reactor according to claim 1, wherein extends toward the stacking direction of the laminate unit is disposed along the outer surface of the laminate unit, said first heat exchanger , The second heat exchange section, the heat storage material layer, the reaction medium diffusion layer, and a second restraining member that restrains movement in a direction intersecting the stacking direction of the filter.

The chemical heat storage reactor according to claim 2 includes a second restraint member in addition to the first restraint member with a heat medium flow path, so that deformation of the heat storage material due to expansion force can be further suppressed. Since the second restraint member is provided as an auxiliary, for example, it can be formed of a thin strip-shaped member, and the dimension of projecting outward from the side surface of the laminated unit can be suppressed to a small size.

In the invention according to claim 3, in the chemical heat storage reactor according to claim 2, the first restraint member and the second restraint member are joined to each other.

In the chemical heat storage reactor according to claim 3, since the first restraint member and the second restraint member are joined, the heat storage material is compared with the case where the first restraint member and the second restraint member are not joined. Deformation due to expansion force can be further suppressed.

The chemical heat storage system according to claim 4 comprises the chemical heat storage reactor according to any one of claims 1 to 3 and the supply of a reaction medium to the reaction medium diffusion layer of the chemical heat storage reactor and the reaction. It has an evaporative condenser, which performs at least one of receiving the reaction medium from the medium diffusion layer.

Since the chemical heat storage system according to claim 4 includes the chemical heat storage reactor according to any one of claims 1 to 3 , high heat storage density and weight reduction are possible.

According to the chemical heat storage reactor and the chemical heat storage system of the present invention, high heat storage density and weight reduction are possible.

(A) and (B) are block diagrams showing the chemical heat storage system according to the first embodiment. It is a perspective view which showed the reactor which concerns on 1st Embodiment. It is a perspective view which showed the laminated unit provided in the reactor which concerns on 1st Embodiment. It is an exploded perspective view which showed the laminated body provided in the reactor which concerns on 1st Embodiment. (A) is a perspective view showing a reaction medium diffusion layer provided in the reactor according to the first embodiment, and (B) is a side view showing a reaction medium diffusion layer. It is a perspective view which showed the heat flow part provided in the reactor which concerns on 1st Embodiment. (A) is a plan view showing the main body of the heat flow part shown in FIG. 6, and (B) is a cross-sectional view of the main body (7B-7B line sectional view of FIG. 7 (A)). C) is a cross-sectional view showing a main body portion according to a modified example. (A) is a perspective view showing a state in which a heat flow part and a heat flow part are joined by a first restraint member, (B) is a plan view thereof, and (C) is a side view thereof. It is a vertical sectional view which shows the state which the heat flow part and the heat flow part are joined by the 1st restraint member. (A) to (E) are explanatory views showing an assembly procedure of a heat storage material layer and a reaction medium diffusion layer. It is a perspective view which shows the laminated unit which concerns on 2nd Embodiment. (A) is a perspective view showing a state in which a heat flow part and a heat flow part according to a comparative example are joined by a first restraint member, and (B) is a plan view thereof. (A) is a plan view showing the heat flow part according to the third embodiment , (B) is a plan view showing the main body part of the heat flow part, and (C) is a perspective view showing the heat flow part. is there. It is a perspective view which shows the state which the heat flow part and the heat flow part which concerns on 4th Embodiment are joined by the 1st restraint member. (A) is a plan view showing a heat flow section of the fourth embodiment, (B) is a plan view showing the inside of the main body portion of the heat flow section of the fourth implementation form.

[First Embodiment]
The chemical heat storage system 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 10. The arrow H shown in the figure indicates the device vertical direction (vertical direction, stacking direction), the arrow W indicates the device width direction (horizontal direction), and the arrow D indicates the device depth direction (horizontal direction).

(overall structure)
As shown in FIGS. 1A and 1B, in the chemical heat storage system 10 according to the present embodiment, an evaporator for evaporating water and a reactor for condensing water vapor (an example of a reaction medium) W are integrated. It is configured to include an evaporation condenser 12, a reactor 20 as an example of a chemical heat storage reactor, and a communication passage 14 connecting the evaporation condenser 12 and the reactor 20.

(Evaporation condenser)
In the evaporation condenser 12, the evaporated part that evaporates the stored water and supplies it to the reactor 20 (generates water vapor W), the condensing part that condenses the water vapor W received from the reactor 20, and the water vapor W are condensed. It has each function as a storage unit for storing water.

Further, the evaporation condenser 12 includes a container 16 in which water is stored, and one of the heat medium flow paths 17 used for condensing water vapor W or evaporating water in the container 16. The part is arranged. Further, the heat medium flow path 17 is arranged so as to perform heat exchange in a portion of the container 16 including at least the gas phase portion 16A. Then, a low temperature medium flows through the heat medium flow path 17 during condensation and a medium temperature medium flows through the heat medium flow path 17 during evaporation.

(Continuous passage)
The communication passage 14 includes an on-off valve 19 for switching between communication and non-communication between the evaporation condenser 12 (container 16) and the reactor 20 (reaction container 22 described later). The connection portions of the container 16, the reaction container 22, the communication passage 14, and the on-off valve 19 are airtightly configured, and the internal spaces thereof are evacuated in advance.

(Reactor)
As shown in FIG. 2, the reactor 20 includes a reaction vessel 22, and the lamination unit 24 shown in FIG. 3 is housed inside the reaction vessel 22.

(Reaction vessel)
As shown in FIG. 2, the reaction vessel 22 has a rectangular parallelepiped shape and includes a box-shaped main body portion 22A whose upper side is open, and a lid member 22B. The inside of the reaction vessel 22 is a reaction medium flow portion 26 through which water vapor (an example of a reaction medium) flows, and the inside is evacuated as described above.

(Overall configuration of heat storage material reaction part in the laminated unit)
As shown in FIG. 3, the stacking unit 24 includes a laminated body 51 including a heat storage material reaction unit 30 that generates heat or stores heat and a heat flow unit 50 that is laminated under the heat storage material reaction unit 30. A plurality of (three in the present embodiment) are laminated in the vertical direction of the device, and the heat flow portion 50 is also laminated on the upper side of the uppermost laminated body 51.

As shown in FIG. 4, the heat storage material reaction unit 30 includes a heat storage material layer 32, a filter 34 laminated on the heat storage material layer 32 from above, and a reaction medium diffusion layer 36 laminated on the filter 34 from above. It has.

The heat storage material layer 32, the filter 34, and the reaction medium diffusion layer 36 have the same rectangular shape (square in the present embodiment) when viewed from the vertical direction of the device, and are arranged in the vertical direction of the device in the present embodiment. It is laminated in a non-bonded state (a state where it is not fixed by welding or the like) (so-called laminated structure).

(Structure of heat storage material layer in heat storage material reaction part)
The heat storage material layer 32 includes a plurality of heat storage molded bodies 40 formed in a block shape, and a frame member 44 as an example of a frame-shaped restraint frame formed of a metal material and in which the heat storage molded body 40 is arranged inside. It has.

As an example, a molded body of calcium oxide (CaO: an example of a heat storage material), which is one of the oxides of an alkaline earth metal, is used as the heat storage molded body 40. This molded product is formed into a substantially rectangular block shape, for example, by kneading calcium oxide powder with a binder (for example, clay mineral or the like) and firing it.

Here, the heat storage molded body 40 expands and dissipates heat (heat generation) with hydration, and stores heat (endothermic) with dehydration, and can reversibly repeat heat dissipation and heat storage by the reaction shown below. It is composed.

CaO + H2O ⇔ Ca (OH) 2
When the heat storage amount and the calorific value Q are shown together in this equation,
CaO + H2O → Ca (OH) 2 + Q
Ca (OH) 2 + Q → CaO + H2O
Will be.

As an example, the heat storage capacity per 1 kg of the heat storage molded body 40 is 1.86 [MJ / kg].

Further, in the present embodiment, the particle size of the heat storage material constituting the heat storage molded body 40 is the average particle size of the heat storage material when it is powder, and the average particle size of the powder before granulation when the heat storage material is granular. To do. This is because it is presumed that when the grains collapse, they return to the state of the previous process.

The frame member 44 has a rectangular frame shape when viewed from the vertical direction of the device, and includes a U-shaped first member 44A and a second member 44B connecting both ends of the first member 44A. There is. The second member 44B is detachably attached to the first member 44A with a bolt 45.

In the present embodiment, 24 heat storage molded bodies 40 are densely arranged inside the frame member 44 except for the central portion of the frame member 44. A first restraint member 92, which will be described later, is arranged in the central portion of the frame member 44 where the heat storage molded body 40 is not arranged. As a result, the movement of the heat storage molded body 40 in the horizontal direction (orthogonal direction orthogonal to the plate thickness direction) is constrained by the frame member 44 and the first restraining member 92. And. The vertical dimension (thickness dimension) of the frame member 44 is determined so that the density when the heat storage molded body 40 expands due to the hydration reaction becomes a predetermined set density of the heat storage molded body 40. ing.

(Heat storage material reaction part, filter)
The filter 34 is sandwiched between the reaction medium diffusion layer 36 and the heat storage material layer 32, and as an example, an etching made of a metal material in which a large number of microthrough holes (not shown) having a diameter of 200 [μm] are formed on the entire surface of the filter. It is a filter.

The filter 34 has a filtration accuracy smaller than the average particle size of the heat storage material constituting the heat storage molded body 40. As a result, the filter 34 allows water vapor to pass through a flow path smaller than the average particle size of the heat storage material constituting the heat storage molded body 40, while restricting the passage of the heat storage material larger than the average particle size. It has become.

The filtration accuracy is the particle size at which the filtration efficiency is 50 to 98%, and the filtration efficiency is the removal efficiency for particles having a certain particle size.

The filter 34 has a rectangular hole 35 formed in the center for penetrating the first restraint member 92, which will be described later, and the two filter pieces 34A are formed in the device width direction (arrow W direction) from the center portion in the device width direction. It can be divided into two.

(Reaction medium diffusion layer of heat storage material reaction part)
As shown in FIG. 5A, the reaction medium diffusion layer 36 includes a rectangular top plate 37 made of a metal material and a plurality of flow path members 38 made of a metal material fixed to the top plate 37. There is. The flow path members 38 extend in the width direction of the device through which water vapor flows, and are arranged at intervals in the depth direction of the device (see FIG. 5B).

As shown in FIG. 5B, each flow path member 38 is arranged below the top plate 37, and the filter 34 (see FIG. 4) side is open when viewed from the device width direction (arrow W direction). It is said to be U-shaped. The upper wall 38B is welded to the lower surface of the top plate 37.

As a result, water vapor supplied to the heat storage molded body 40 of the heat storage material layer 32 or discharged from the heat storage molded body 40 of the heat storage material layer 32 between the inside of the flow path member 38 and the adjacent flow path members 38. Water vapor flows along the width direction of the device.

The reaction medium diffusion layer 36 has a rectangular hole 39 formed in the center for penetrating the first restraint member 92 described later, and the two reaction medium diffusion layer pieces 36A are centered in the device depth direction (arrow D direction). It can be divided into two parts in the depth direction of the device.

(Heat flow part)
As shown in FIGS. 6 and 7 (A) and 7 (B), the heat flow portion 50 has a substantially box shape with an upper opening, and has a rectangular main body 52 and a main body when viewed from the vertical direction of the device. It is configured to include a lid member 54 that covers the opening of 52 and seals the inside of the main body 52.

As shown in FIGS. 7A and 7B, the inside of the main body 52 is formed in the center in the device width direction (arrow W direction) and is passed through a partition wall 56 extending in the device depth direction (arrow D direction). It is divided into a first heat medium passing chamber 58 on one side and a second heat medium passing chamber 60 on the other side.

At the bottom of the main body 52, that is, the bottom of the first heat medium passing chamber 58 and the bottom of the second heat medium passing chamber 60, a plurality of heat radiation fins 62 arranged in parallel with the partition wall 56 are provided in the device width direction. Welded at intervals. The heat radiating fin 62 has a substantially U-shape with the upper side (lid member side) open when viewed from the device width direction.

Further, at the bottom of the main body 52, a first partition wall 64 is formed between the heat radiation fin 62 closest to the partition wall 56 and the partition wall 56 in parallel with the partition wall 56. Further, a second partition wall 66 connecting the central portion in the longitudinal direction of the partition wall 56 and the central portion in the longitudinal direction of the first partition wall 64 is formed at the bottom of the main body portion 52.

Here, in the first heat medium passing chamber 58, between the partition wall 56 and the first partition wall 64, and the side of the second partition wall 66 in the direction of arrow D is the first flow path 68, and the partition wall 56 and the first partition wall 56 and the first partition wall 56. The second flow path 70 is located between the first partition wall 64 and the second partition wall 66 in the direction opposite to the arrow D direction.

On the other hand, in the second heat medium passing chamber 60, between the partition wall 56 and the first partition wall 64, and the side of the second partition wall 66 in the direction of arrow D is a third flow path 72, and the partition wall 56 and the first partition wall 56 and the first partition wall 56. The fourth flow path 74 is located between the partition wall 64 and the second partition wall 66 in the direction opposite to the arrow D direction.

The bottom of the main body 52 communicates with the first opening 76 on the main body side that communicates with the end of the first flow path 68 on the center side of the main body and the end of the second flow path 70 on the center side of the main body. At the second opening 78 on the main body side, the third opening 80 on the main body side communicating with the end on the center side of the main body of the third flow path 72, and the end on the center side of the main body of the fourth flow path 74. A fourth opening 82 on the main body side to communicate with is formed.

As shown in FIG. 6, in the center of the lid member 54, the lid member side first opening 84 and the main body side first opening 76 are located at positions facing the main body side first opening 76 (not shown in FIG. 6). At a position facing the opening 78 (not shown in FIG. 6) of No. 2 at a position facing the second opening 86 on the lid member side and the third opening 80 on the main body side (not shown in FIG. 6). A third opening 88 on the lid member side and a fourth opening 90 on the lid member side are formed at positions facing the fourth opening 82 on the main body side (not shown in FIG. 6).

The heat flow portion 50 is made of a metal material and has a flexural rigidity higher than that of the filter 34 and the reaction medium diffusion layer 36 so as not to be deformed by the pressure from the heat storage molded body 40.

(1st restraint member)
As shown in FIGS. 3, 8 and 9, these plurality of heat flow portions 50 are connected by a prismatic first restraining member 92 whose central portion is formed of a metal material. Further, in the uppermost heat flow portion 50, the first restraint member 92 is attached to the central portion of the lid member 54. As shown in FIG. 9, the first restraint member 92 is joined to the main body portion 52 and the lid member 54 by welding (or brazing) 55. That is, the plurality of heat flow portions 50 and the first restraint member 92 are integrated, and the distance between the heat flow portion 50 and the heat flow portion 50 is kept constant. Then, the heat storage material reaction unit 30 (heat storage material layer 32, filter 34, reaction medium diffusion layer 36) is arranged between the heat flow unit 50 and the heat flow unit 50 maintained at regular intervals.

As shown in FIGS. 6, 8 and 9, the first restraint member 92 formed in a prismatic shape communicates with the first opening 76 on the main body side and the first opening 84 on the lid member side. The first heat medium flow path 94, the second heat medium flow path 96 communicating with the second opening 78 on the main body side and the second opening 86 on the lid member side, the third opening 80 on the main body side and the lid member side. The third heat medium flow path 98 communicating with the third opening 88, the fourth heat medium flow path 100 communicating with the fourth opening 82 on the main body side and the fourth opening 90 on the lid member side are shafts. It is formed along the direction (vertical direction of the device).

(Second restraint member)
As shown in FIG. 3, four second restraint members 102 formed in a vertically arranged endless belt shape are wound around the laminated unit 24 so as to surround the laminated unit 24. The second restraint member 102 is made of a thin metal plate such as stainless steel.
Two of the four second restraint members 102 have the device vertical direction (arrow H direction) and the device depth direction (arrow D direction) as circumferential directions, and the other two have the device vertical direction (arrow H). The direction) and the device width direction (arrow W direction) are the circumferential directions, and each of the second restraint members 102 is in contact with the upper surface, the lower surface, and the side surface of the laminating unit 24.

(Other members)
As shown in FIG. 1, the outside of the reaction vessel 22 is provided with a switching member 108 for switching whether the communication destination of the heat flow unit 50 is the heat source 104 or the heat utilization object 106.
As shown in FIGS. 1 and 2, the first restraining member 92 joined to the upper part of the heat flow portion 50 at the uppermost portion of the laminating unit 24 penetrates the lid member 22B of the reaction vessel 22, and the lid member 22B It protrudes upward. The first restraint member 92 and the switching member 108 projecting upward from the lid member 22B are connected to each other via a plurality of pipes.

Here, the heat medium from the heat source 104 is allowed to flow into the heat flow section 50 via the switching member 108, the second heat medium flow path 96 of the first restraint member 92, and the third heat medium flow path 98. The heat medium after passing through the heat flow section 50 can be returned to the heat source 104 via the first heat medium flow path 94 of the first restraint member 92 and the fourth heat medium flow path 100.

Further, by switching the switching member 108, the heat medium from the heat utilization object 106 is heated through the switching member 108, the second heat medium flow path 96 of the first restraint member 92, and the third heat medium flow path 98. The heat medium that has flowed into the flow section 50 and has passed through the heat flow section 50 is heat-utilized through the first heat medium flow path 94 of the first restraint member 92 and the fourth heat medium flow path 100. It can be returned to the object 106.

(Assembly procedure of laminated unit)
The outline of the assembly procedure of the laminated unit 24 will be described below.
(1) First, the first restraint member 92 is joined to the heat flow portion 50 by welding 55, and as shown in FIG. 8, a plurality of heat flow portions 50 are connected and integrated by the first restraint member 92.
(2) Next, as shown in FIGS. 10A to 10C, the heat storage material layer 32 is assembled on the heat flow section 50. First, as shown in FIG. 10 (A), the U-shaped second member 44B is arranged on the heat flow portion 50, and the block-shaped heat storage molded body 40 is arranged in order, and in FIG. 10 (B). As shown, the heat storage molded body 40 is spread inside the second member 44B. After that, the second member 44B is arranged so as to close the lateral opening portion of the first member 44A, and as shown in FIG. 10C, the second member 44B is fixed to the first member 44A with bolts 45. In this way, the heat storage material layer 32 is assembled on the heat flow portion 50. Since the first restraint member 92 penetrates the central portion of the heat storage material layer 32, the heat storage material layer 32 does not shift in the horizontal direction with respect to the heat flow portion 50.
(3) Next, as shown in FIG. 10D, two filter pieces 34A are arranged facing each other on the heat storage material layer 32. After the one filter piece 34A and the other filter piece 34A are brought into contact with each other facing each other, the outer peripheral edge of the contact portion between the one filter piece 34A and the other filter piece 34A is welded or brazed in a dot shape. By doing so, it is possible to suppress the separation of one filter piece 34A and the other filter piece 34A.
(4) Next, as shown in FIG. 10 (E), two reaction medium diffusion layer pieces 36A are arranged facing each other on the filter 34. After the one reaction medium diffusion layer piece 36A and the other reaction medium diffusion layer piece 36A are brought into contact with each other facing each other, the one reaction medium diffusion layer piece 36A and the other reaction medium diffusion layer piece 36A are brought into contact with each other. By welding or brazing the outer peripheral edge of the portion in a dot shape, the separation of one reaction medium diffusion layer piece 36A and the other reaction medium diffusion layer piece 36A can be suppressed.
As a result, the heat storage material reaction unit 30 including the heat storage material layer 32, the filter 34, and the reaction medium diffusion layer 36 is assembled between the heat flow unit 50 and the heat flow unit 50.
(4) After that, as shown in FIG. 3, four second restraint members 102 are wound around the laminated unit 24.

(Action and effect of chemical heat storage system)
Next, the action and effect of the chemical heat storage system 10 will be described.
When the heat stored in the reactor 20 in the chemical heat storage system 10 is generated (heated) from the heat storage material layer 32, as shown in FIG. 1 (B), each passage of the first restraint member 92 is provided by the switching member 108. The communication destination is switched to the heat utilization target 106. Further, the on-off valve 19 is opened, and in this state, a medium temperature medium is passed through the heat medium flow path 17 of the evaporation condenser 12 to evaporate the water in the liquid phase portion 16B. Then, the generated steam W moves in the communication passage 14 in the direction of arrow D and is supplied into the reaction vessel 22.

Subsequently, in the reaction vessel 22, the supplied water vapor W passes through the reaction medium flow unit 26 and flows through the reaction medium diffusion layer 36. Then, when the water vapor W passes through the filter 34 and comes into contact with the heat storage molded body 40 of the heat storage material layer 32, the heat storage molded body 40 of the heat storage material layer 32 generates heat (heat is dissipated) while causing a hydration reaction. This heat is transferred to the heat utilization object 106 by the heat medium flowing inside the heat flow unit 50.

As shown in FIGS. 7 and 9, inside the heat flow unit 50, the heat medium flows in the direction of arrow A inside the first heat medium passing chamber 58 and inside the second heat medium passing chamber 60. Since the heat radiation fins 62 are provided inside the heat flow unit 50 and the heat medium passes between the heat radiation fins 62, the heat of the heat storage molded body 40 can be efficiently transferred to the heat medium.

On the other hand, when heat is stored in the heat storage molded body 40 of the heat storage material layer 32 in the chemical heat storage system 10, as shown in FIG. 1A, the switching member 108 communicates with each passage of the first restraint member 92. Is switched to the heat source 104. Further, the on-off valve 19 is opened, and in this state, the heat medium heated by the heat source 104 flows inside the heat flow unit 50.

Also in this case, inside the heat flow unit 50, the heat medium heated by the heat source 104 flows in the direction of arrow A inside the first heat medium passing chamber 58 and inside the second heat medium passing chamber 60, and heat is generated. The heat of the medium can be efficiently transferred to the heat storage molded body 40.

Then, the heat storage molded body 40 undergoes a dehydration reaction due to the heat of the heat medium flowing through the first heat medium passing chamber 58 and the second heat medium passing chamber 60 of the heat flow unit 50, and this heat is stored in the heat storage molded body 40. ..

Further, the water vapor W separated from the heat storage molded body 40 flows from the filter 34 into the reaction medium diffusion layer 36. The water vapor W that has flowed into the reaction medium diffusion layer 36 passes through the reaction medium flow unit 26, flows through the communication passage 14 in the direction of arrow E, and flows into the evaporation condenser 12 as shown in FIG. 1 (A).

Then, in the gas phase portion 16A of the evaporation condenser 12, the water vapor W is cooled by the refrigerant flowing through the heat medium flow path 17, and the condensed water is stored in the liquid phase portion 16B of the container 16.

In the laminated unit 24 of the present embodiment, the heat storage material layer 32, the filter 34, and the reaction medium diffusion layer 36 are sandwiched between the heat flow unit 50 and the heat flow unit 50 connected by the first restraint member 92. There is. As a result, when the heat storage molded body 40 comes into contact with the water vapor W and expands, the heat flow portion 50 utilizes the high flexural rigidity of the heat flow portion 50 and the tensile strength of the first restraint member 92 in the stacking direction. It suppresses deformation of each member laminated between the heat flow unit 50 and the interval in the stacking direction, and reduces the heat exchange efficiency between the heat storage material reaction unit 30 and the heat flow unit 50. Can be suppressed.

Further, since the first restraint member 92 penetrates the central portion of the heat storage material layer 32, the filter 34, and the reaction medium diffusion layer 36 arranged between the heat flow portion 50 and the heat flow portion 50, It is possible to suppress the deviation of the heat storage material layer 32, the filter 34, and the reaction medium diffusion layer 36 in the horizontal direction, that is, in the device width direction (arrow W direction) and in the device depth direction (arrow D direction). Therefore, even if the heat storage material is powdered, leakage of the heat storage material due to the horizontal displacement of the heat storage material layer 32 is suppressed.

If the heat storage material leaks from the heat storage material layer 32 and the density of the heat storage material and the amount of the heat storage material decrease, there is a risk that the heat exchange efficiency between the heat storage material reaction unit 30 and the heat flow unit 50 will decrease. is there. However, by suppressing the displacement of the heat storage material layer 32 and suppressing the leakage of the heat storage material as in the present embodiment, the heat exchange efficiency between the heat storage material reaction unit 30 and the heat flow unit 50 is lowered. Can be suppressed.

Here, in the heat storage molded body 40 arranged inside the heat storage material layer 32, the expansion force when expanded increases in the central portion when viewed from the lamination direction, but the center of the lamination unit 24 on which the large expansion force acts. Since the first restraint member 92 is arranged in the portion, deformation due to the expansion force can be efficiently suppressed.

In the laminated unit 24, the second restraining member 102 is wound so as to surround the laminated unit 24, and the deformation of the outer peripheral side (position away from the central portion) due to the expansion force is auxiliary suppressed. .. The second restraint member 102 may or may not be provided as needed.

In the laminated unit 24 of the present embodiment, the first restraint member 92 is not arranged outside the side surface of the laminated unit 24, but penetrates the central portion of the laminated unit 24 and is wound outward. Since the 2 restraint member 102 is formed of a thin metal plate, the distance between the side surface of the laminating unit 24 and the inner surface of the reaction vessel 22 can be narrowed, and the reaction vessel 22 can be made smaller to increase the internal volume of the reaction vessel 22. It can be made smaller. As a result, the heat storage density, which is the amount of heat stored in the heat storage material in the internal volume of the reaction vessel 22, can be increased.

Further, in the laminated unit 24 of the present embodiment, the first restraint member 92 functions as a heat medium flow path for supplying a heat medium to the heat flow unit 50 from the outside, and the heat storage material layer 32, the filter 34, and the like. Since it has a function as a restraining member for restraining the reaction medium diffusion layer 36 by the heat flow portion 50, it is not necessary to create the heat medium flow path and the restraining member as separate members, and the number of parts can be increased. It can be reduced to reduce the weight. Further, by reducing the number of parts of the laminated unit 24, the heat capacity of the laminated unit 24 can be reduced, the reaction time for the reaction between the heat storage material and the reaction medium can be shortened, and the high-performance reactor 20 can be used. Can be realized.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. The same members and the like as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the parts different from those in the first embodiment will be mainly described.

As shown in FIG. 11, in the laminated unit 24 of the present embodiment, two second restraining members 110 having both ends joined to the side surface of the first restraining member 92 by welding 112 are wound so as to surround the laminated unit 24. It is being turned. The second restraint member 110 of this embodiment is also made of a thin metal plate such as stainless steel.

Here, one of the two second restraint members 110 has the vertical direction (arrow H direction) and the device depth direction (arrow D direction) as the circumferential direction, and the other one has the vertical direction (arrow). The H direction) and the device width direction (arrow W direction) are the circumferential directions, and each of the second restraint members 110 is in contact with the upper surface, the lower surface, and the side surface of the laminating unit 24.

Further, since both ends of the second restraint member 110 of the present embodiment are joined to the side surface of the first restraint member 92 by welding 112, the effect of suppressing deformation can be enhanced as compared with the case where the second restraint member 110 is not joined. ..

[ Comparison example ]
Next, a comparative example will be described with reference to FIG. The same members and the like as those in the above-described embodiment are designated by the same reference numerals, the description thereof will be omitted, and the parts different from the above-described embodiment will be mainly described.

In the first embodiment, the first restraint member 92 is joined to the central portion of the heat flow portion 50. For example, as shown in FIG. 12, when the shape of the heat flow portion 50 is rectangular, the heat flow (the ratio Comparative Examples 2) a plurality in the longitudinal direction of the part 50 may be joined to the first constraining member 92. The heat flow section 50 of the comparative example is a set of two heat flow sections 50 of the first embodiment, which were square, and are integrated so as to form a rectangular shape.
Although not shown, the heat storage material layer 32, the filter 34, and the reaction medium diffusion layer 36 are formed in a rectangular shape according to the shape of the heat flow portion 50.

In the heat flow portion 50, when the portion where the expansion force of the heat storage material is large is distributed in a certain direction or becomes a plurality of portions, a plurality of first restraint members 92 are joined to the heat flow portion 50 to suppress deformation. Is preferable.

[ Third Embodiment ]
Next, a third embodiment of the present invention will be described with reference to FIG. The same members and the like as those in the above-described embodiment are designated by the same reference numerals, the description thereof will be omitted, and the parts different from the above-described embodiment will be mainly described.

As shown in FIG. 13, the heat flow portion 50 of the present embodiment includes a first opening 76 on the main body side, a third opening 80 on the main body side, a first opening 84 on the lid member side, and a lid member side. The first heat medium flow path 116 communicating with the third opening 88, the second opening 78 on the main body side, the fourth opening 82 on the main body side, the second opening 86 on the lid member side, and the lid member side. The second heat medium flow path 118 communicating with the fourth opening 90 is joined to the first restraint member 114 formed along the axial direction (vertical direction of the device).

In the present embodiment, the heat medium flows into the heat flow section 50 from the first heat medium flow path 116, and the heat medium is discharged from the second heat medium flow path 118, as shown in FIG. 12 (B). As shown, a heat medium can flow in the direction of arrow B inside the heat flow unit 50.
The other actions and effects are the same as those in the first embodiment.

[ Fourth Embodiment ]
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 14 and 15. The same members and the like as those in the above-described embodiment are designated by the same reference numerals, the description thereof will be omitted, and the parts different from the above-described embodiment will be mainly described.

The shape of the heat flow portion 50 of the first embodiment is rectangular, but as shown in FIGS. 14 and 15, the heat flow portion 120 of this embodiment is circular. Further, the first restraint member 92 of the first embodiment has a prismatic shape, but as shown in FIG. 14, the first restraint member 122 of the present embodiment has a columnar shape.

The heat flow portion 120 of the present embodiment has a main body portion 124 having an opening at the top and a circular shape when viewed from the vertical direction of the device, and a lid member 126 that covers the opening of the main body portion 124 and seals the inside of the main body portion 124. It is configured to include.

As shown in FIG. 15B, a partition wall 128 is formed in the center of the bottom portion of the main body portion 124, and a semicircular first opening 130 on the main body side is formed on the arrow W direction side of the partition wall 128. , The second opening 132 on the main body side is formed on the side of the partition wall 128 opposite to the arrow W direction.

Further, at the bottom of the main body 124, a passage 134 is formed on the arrow W direction side of the partition wall 128 along the virtual center line FCL extending in the device width direction through the center portion, and the arrow W direction side of the partition wall 128 is formed. A passage 136 is formed on the opposite side to the above.

Further, at the bottom of the main body 124, the central portion of the main body 124 has a radius of curvature on the side opposite to the arrow D direction side and the arrow D direction side of the passage 134 and the passage 136 with the virtual center line FCL as a boundary. A plurality of arcuate fins 138 at the center are formed.

As shown in FIG. 15A, the lid member 126 is formed with the lid-side first opening 140 at a position facing the main body-side first opening 130 of the main body 124, and the main body-side first opening 140 is formed. A second opening 142 on the lid side is formed at a position facing the opening 132 of 2.

As shown in FIGS. 14 and 15 (A), the first restraint member 122 of the present embodiment has a first heat medium communicating with the first opening 130 on the main body side and the first opening 140 on the lid side. A second heat medium flow path 146 that communicates with the flow path 144 and the second opening 132 on the main body side and the second opening 142 on the lid side is formed along the axial direction.

Although not shown, a circular heat storage material layer 32, a filter 34, and a reaction medium diffusion layer 36 are arranged between the heat flow unit 120 and the heat flow unit 120.

In the present embodiment, the heat medium flows into the heat flow section 120 from the first heat medium flow path 144 of the first restraint member 122, and the heat medium is discharged from the second heat medium flow path 146. As shown in FIG. 15B, inside the heat flow section 120, the heat medium flows through the passage 134 in the direction of arrow C, then flows between the fins 138 and 138, and finally, the passage 136 is indicated by an arrow. It is designed to flow in the C direction.
The other actions and effects are the same as those in the first embodiment.

[Other Embodiments]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments can be taken within the scope of the present invention. That is clear to those skilled in the art.

In the main body 52 of the heat flow section 50 of the above embodiment, as shown in FIG. 7B, a plurality of heat radiating fins are formed on the bottom of the first heat medium passing chamber 58 and the bottom of the second heat medium passing chamber 60. Although the 62 was welded, the heat radiation fins 62 were integrally formed with respect to the bottom of the first heat medium passing chamber 58 and the bottom of the second heat medium passing chamber 60, as shown in FIG. 7C. It may be (for example, by cutting the main body 52).

20 Reactor (Example of chemical heat storage reactor)
22 Reaction vessel 24 Laminating unit 32 Heat storage material layer 34 Filter 36 Reaction medium diffusion layer 40 Heat storage material molded body (heat storage material)
44 Frame member (restraint frame)
50 Heat flow section (first heat exchange section, second heat exchange section)
51 Laminated body 92 First restraint member 94 First heat medium flow path (heat medium flow path)
96 Second heat medium flow path (heat medium flow path)
98 Third heat medium flow path (heat medium flow path)
100 4th heat medium flow path (heat medium flow path)
102 Second restraint member 114 First restraint member 116 First heat medium flow path (heat medium flow path)
118 2nd heat medium flow path (heat medium flow path)
120 Heat flow unit 122 1st restraint member 144 1st heat medium flow path 146 2nd heat medium flow path W Water vapor (reaction medium)

Claims (4)

A heat storage material layer in which a heat storage material that expands by combining with a reaction medium and generates heat or desorbs and stores heat is arranged inside, and a reaction medium diffusion in which a reaction medium flows on one side of the heat storage material layer. A layer, a filter arranged between the heat storage material layer and the reaction medium diffusion layer and having a plurality of pores formed therein, and a heat storage material layer laminated on the opposite side to the filter, and a heat medium is provided inside. A laminated body including a first heat exchange section having a flowing space, and the first heat exchange section arranged on the side opposite to the first heat exchange section with respect to the laminated body. The heat storage material layer, the reaction medium diffusion layer, and the filter are sandwiched between them, and a space through which the heat medium flows is provided, and the heat medium supplies heat to the heat storage material and heat from the heat storage material. A laminated unit including a second heat exchange unit that performs at least one of recovery, and
A container for accommodating the laminated unit inside and
The first heat exchange section and the second heat exchange section are connected through the laminated heat storage material layer, the reaction medium diffusion layer, and the filter, and the first heat exchange section is inside. From the outside of the laminate with respect to the internal space of the first heat exchange section and the internal space of the second heat exchange section while communicating the internal space of the first heat exchange section with the internal space of the second heat exchange section. A first restraint member provided with a heat medium flow path for allowing the heat medium to enter and exit,
Equipped with a,
The first restraining member penetrates the heat storage material layer, the reaction medium diffusion layer, and the central portion of the filter, and the central portion of the first heat exchange portion and the central portion of the second heat exchange portion. A chemical heat storage reactor that connects with . The first heat exchange section, the second heat exchange section, the heat storage material layer, the reaction medium diffusion layer, and the first heat exchange section, the second heat exchange section, the heat storage material layer, and the reaction medium diffusion layer, which extend in the stacking direction of the laminated unit and are arranged along the outer surface of the laminated unit. The chemical heat storage reactor according to claim 1, further comprising a second restraining member that restrains movement in a direction intersecting the stacking direction of the filter. The chemical heat storage reactor according to claim 2, wherein the first restraint member and the second restraint member are joined. The chemical heat storage reactor according to any one of claims 1 to 3 and
An evaporation condenser that supplies the reaction medium to the reaction medium diffusion layer of the chemical heat storage reactor and receives the reaction medium from the reaction medium diffusion layer at least one of them.
Has a chemical heat storage system.