JP2021116990A - Heat storage body and chemical heat storage reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for suppressing damage of a restraining member due to expansion of a heat storage material in a chemical heat storage reactor. SOLUTION: The heat storage material is formed on at least one of a heat storage material that generates steam by reaction with reaction water, a tubular restraint member arranged outside the heat storage material, and the heat storage material and the restraint member. It is provided with a flow path forming portion for forming a flow path for flowing the reaction water supplied to the heat storage material between the heat storage material and the restraining member. [Selection diagram] Fig. 4

Description

The present invention relates to a heat storage body and a chemical heat storage reactor.

Conventionally, a chemical heat storage reactor including a heat storage body capable of repeating heat dissipation and heat storage by a chemical reaction with water is known. For example, in Patent Document 1, the lower heat storage body that generates steam by reacting with water and the upper heat storage body that is arranged above the lower heat storage body and generates heat by the reaction with the steam generated by the lower heat storage body. A chemical heat storage reactor comprising a body is disclosed.

Japanese Unexamined Patent Publication No. 2019-184119

The lower heat storage body described in Patent Document 1 includes a heat storage molded body made of a heat storage material and a tubular member that covers the heat storage molded body, and the tubular member is provided with reaction water that reacts with the heat storage material inside the tubular member. A filter unit is arranged to flow into the water. However, since this filter portion is arranged in a part of the tubular member, the reaction water flowing into the inside of the tubular member through the filter portion first reacts with the heat storage material in the vicinity of the filter portion. Further, the reaction of the heat storage material located away from the filter unit with the reaction water is slower than that of the heat storage material near the filter unit. Therefore, the expansion of the heat storage material due to the reaction with water becomes non-uniform, and the restraining member may be damaged.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a technique for suppressing damage to a restraining member due to expansion of a heat storage material in a chemical heat storage reactor.

The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following forms.

(1) According to one embodiment of the present invention, a heat storage body is provided. This heat storage body is formed on at least one of a heat storage material that generates steam by reaction with reaction water, a tubular restraint member arranged outside the heat storage material, and the heat storage material and the restraint member. A flow path forming portion for forming a flow path for flowing the reaction water supplied to the heat storage material is provided between the heat storage material and the restraint member.

According to this configuration, a flow path for passing the reaction water is formed by the flow path forming portion between the heat storage material and the restraining member. As a result, the reaction water can be distributed over a wide range of the heat storage material, so that the hydration reaction of the heat storage material can proceed over a wide range of the heat storage material at the same timing. Therefore, since the expansion of the heat storage material due to the hydration reaction becomes uniform, it is possible to suppress damage to the restraining member due to non-uniform expansion.

(2) In the heat storage body of the above form, the flow path forming portion is a groove portion formed on the inner surface of the restraining member, and the groove portion extends along the axial direction of the restraining member and is restrained. A plurality of members may be arranged side by side along the circumferential direction. According to this configuration, for example, the reaction water supplied to the heat storage body from the axial direction of the restraint member can flow to the side opposite to the side to which the reaction water of the heat storage material is supplied by flowing through the groove portion. As a result, the reaction water can be distributed over a wide range in the axial direction of the heat storage material, so that the expansion of the heat storage material due to the hydration reaction becomes uniform, and damage to the restraining member due to non-uniform expansion can be suppressed. ..

(3) In the heat storage body of the above-described form, the flow path forming portion is a groove portion formed on the outer surface of the heat storage material, and the groove portion extends along the axial direction of the heat storage material to store the heat. A plurality of materials may be arranged side by side along the circumferential direction of the material. According to this configuration, the reaction water supplied to the heat storage body from the axial direction of the heat storage material can flow to the side opposite to the side to which the reaction water of the heat storage material is supplied by flowing through the groove portion. As a result, the reaction water can be distributed over a wide range in the axial direction of the heat storage material, so that the expansion of the heat storage material due to the hydration reaction becomes uniform, and damage to the restraining member due to non-uniform expansion can be suppressed. ..

(4) In the heat storage body of the above-described form, the flow path forming portion is a groove portion formed on the inner surface of the restraining member, and the groove portion extends along the circumferential direction of the restraining member and is restrained. A plurality of members may be arranged side by side along the axial direction. According to this configuration, for example, the reaction water supplied to the heat storage body from the radial direction of the restraint member can flow to the side opposite to the side to which the reaction water of the heat storage material is supplied by flowing through the groove portion. As a result, the reaction water can be distributed over a wide range in the circumferential direction of the heat storage material, so that the expansion of the heat storage material due to the hydration reaction becomes uniform, and damage to the restraining member due to non-uniform expansion can be suppressed. ..

(5) In the heat storage body of the above form, the flow path forming portion is a groove portion formed on the outer surface of the heat storage material, and the groove portion extends along the circumferential direction of the heat storage material to store the heat. A plurality of materials may be arranged side by side along the axial direction of the material. According to this configuration, for example, the reaction water supplied to the heat storage body from the radial direction of the heat storage material can flow to the side opposite to the side to which the reaction water of the heat storage material is supplied by flowing through the groove portion. As a result, the reaction water can be distributed over a wide range in the circumferential direction of the heat storage material, so that the expansion of the heat storage material due to the hydration reaction becomes uniform, and damage to the restraining member due to non-uniform expansion can be suppressed. ..

(6) According to another embodiment of the present invention, a chemical heat storage reactor is provided. This chemical heat storage reactor includes a heat storage body for heat generation that generates heat by the reaction of the above-mentioned heat storage body and the steam generated by the heat storage body, and a reaction vessel that houses the heat storage body and the heat storage body for heat generation. .. According to this configuration, in the heat storage body, the reaction water can be distributed over a wide range of the heat storage material by the flow path formed by the flow path forming portion, so that the expansion of the heat storage material due to the hydration reaction becomes uniform, which is not possible. Damage to the restraint member due to uniform expansion can be suppressed.

The present invention can be realized in various aspects. For example, a method for manufacturing a heat storage body, a method for manufacturing a chemical heat storage reactor, a computer program for causing a computer to manufacture a heat storage body, and a computer program are distributed. It can be realized in the form of a server device for storing a computer program, a non-temporary storage medium for storing a computer program, or the like.

It is a schematic diagram of the chemical heat storage apparatus of 1st Embodiment. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 2 is a cross-sectional view taken along the line BB of FIG. It is a perspective view of the heat storage body for steam generation provided in the chemical heat storage reactor. It is a schematic diagram of the heat storage material provided in the heat storage body for steam generation. It is a schematic diagram of the heat storage material restraint cover provided in the heat storage body for steam generation. It is the first figure explaining the operation of a chemical heat storage reactor. It is a 2nd figure explaining the operation of a chemical heat storage reactor. It is a figure explaining the action of the heat storage body for steam generation. It is a schematic diagram of the heat storage material provided in the heat storage body for steam generation of the second embodiment. It is a figure explaining the action of the heat storage body for steam generation. It is a schematic diagram of the heat storage body for steam generation of the 3rd Embodiment. It is the first figure explaining the operation of a chemical heat storage reactor. It is a 2nd figure explaining the operation of a chemical heat storage reactor. It is a perspective view of the heat storage body for steam generation of 4th Embodiment. It is a schematic diagram of the heat storage material restraint cover provided in the heat storage body for steam generation. It is the first figure explaining the action of the heat storage body for steam generation. It is a 2nd figure explaining the action of the heat storage body for steam generation. It is a schematic diagram of the heat storage material provided in the heat storage body for steam generation of the fifth embodiment. It is the first figure explaining the action of the heat storage body for steam generation. It is a 2nd figure explaining the action of the heat storage body for steam generation.

<First Embodiment>
FIG. 1 is a schematic view of the chemical heat storage device 100 of the first embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, which is a cross-sectional view of the chemical heat storage reactor 101 included in the chemical heat storage device 100, for example, in the horizontal direction. FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2, which is a cross-sectional view of the chemical heat storage reactor 101, for example, in the vertical direction. The chemical heat storage device 100 can repeatedly release and store thermal energy by a chemical reaction in the chemical heat storage reactor 101. As shown in FIG. 1, the chemical heat storage device 100 includes a chemical heat storage reactor 101 and a tank 6. The chemical heat storage reactor 101 includes a heat storage body 1 for steam generation, a heat storage body 90 for heat generation, and a reaction vessel 7 (see FIGS. 2 and 3). The reaction vessel 7 is formed with a storage space 8 for accommodating the heat storage body 1 for steam generation and the heat storage body 90 for heat generation. The tank 6 stores the reaction water and steam water supplied to the chemical heat storage reactor 101. A connection flow path 5a and a manifold 5b are arranged between the chemical heat storage reactor 101 and the tank 6. The connection flow path 5a connects the manifold 5b and the tank 6, and sends the reaction water and steam water stored in the tank 6 to the manifold 5b. The manifold 5b disperses the reaction water and steam water supplied to the chemical heat storage reactor 101 by the tank 6 so as to be supplied to a predetermined position of the chemical heat storage reactor 101. The x-axis directions shown in FIGS. 1 to 3, 7 and 8 are the directions in which the steam generation heat storage body 1 or the heat generation heat storage body 90 is arranged in the reaction vessel 7, and the y-axis direction is The heat storage body 1 for steam generation and the heat storage body 90 for heat generation are arranged in the reaction vessel 7 and are perpendicular to the x-axis direction. The z-axis direction is a direction perpendicular to the x-axis direction and the y-axis direction.

FIG. 4 is a perspective view of the steam generation heat storage body 1 included in the chemical heat storage reactor 101. The steam generation heat storage body 1 includes a heat storage material 10, a heat storage material restraint cover 20, and a groove portion 22. In the present embodiment, the chemical heat storage reactor 101 includes three steam generation heat storage bodies 1. The steam generation heat storage body 1 generates heat for generating steam by using the reaction water supplied by the tank 6. The heat storage body 1 for steam generation corresponds to the "heat storage body" in the claims. The heat storage material restraint cover 20 corresponds to the “restraint member” in the claims. In FIG. 4, the heat storage material 10 is hatched so that the shape of the groove portion 22 can be easily recognized.

FIG. 5 is a schematic view of the heat storage material 10 included in the steam generation heat storage body 1. FIG. 5A is a perspective view of the heat storage material 10, and FIG. 5B is a heat storage material from a direction along the central axis C10 of the heat storage material 10 substantially coaxial with the central axis C1 of the steam generation heat storage body 1. It is a schematic view which looked at the material 10, and FIG. 5C is a cross-sectional view including the central axis C10 of the heat storage material 10. The heat storage material 10 is, for example, a molded body of calcium oxide, which is one of the oxides of an alkaline earth metal. The heat storage material 10 is formed so as to have a predetermined shape by kneading granules of calcium oxide with a binder such as clay mineral and firing them. In the present embodiment, the heat storage material 10 is formed in a columnar shape. The heat storage material 10 generates heat by the hydration reaction represented by the formula (1) and stores heat by the dehydration reaction represented by the formula (2), and the heat storage and the heat storage can be reversibly repeated.
CaO + H ₂ O → Ca (OH) ₂ + Q1 ・ ・ ・ (1)
Ca (OH) ₂ + Q2 → CaO + H ₂ O ・ ・ ・ (2)
Q1 of the formula (1) shows the calorific value in the hydration reaction, and Q2 of the formula (2) shows the heat storage amount in the dehydration reaction.

FIG. 6 is a schematic view of the heat storage material restraint cover 20 included in the steam generation heat storage body 1. FIG. 6A is a view of the heat storage material restraint cover 20 viewed from the direction along the central axis C20 of the heat storage material restraint cover 20 substantially coaxial with the central axis C1 of the heat storage body 1 for steam generation. b) is a cross-sectional view including the central axis C20 of the heat storage material restraint cover 20. FIG. 6A shows a cross-sectional view of the heat storage material 10 (two-dot chain line 10 shown in FIG. 6A) inserted inside the heat storage material restraint cover 20 for convenience of explanation.

The heat storage material restraint cover 20 is a cylindrical member arranged outside the heat storage material 10. The heat storage material restraint cover 20 is formed so as to cover the outer surface 10a of the heat storage material 10. The heat storage material restraint cover 20 is formed with a through hole 21 into which the heat storage material 10 is inserted along the central axis C20. A plurality of groove portions 22 are arranged on the inner side surface 20a of the heat storage material restraint cover 20 forming the through hole 21. The plurality of groove portions 22 extend along the direction of the central axis C20 of the heat storage material restraint cover 20 and are arranged side by side along the circumferential direction of the heat storage material restraint cover 20. In the present embodiment, the groove portion 22 is arranged on the inner side surface 20a of the heat storage material restraint cover 20 up to both ends of the heat storage material restraint cover 20 as shown in FIG. 6B. As shown in FIG. 6A, when the heat storage material 10 is arranged in the through hole 21, the flow path 22a through which the reaction water can flow is formed by the outer surface 10a of the heat storage material 10 and the groove portion 22 of the heat storage material restraint cover 20. Formed inside. The plurality of groove portions 22 correspond to "flow path forming portions" in the claims. The heat storage material restraint cover 20 corresponds to the “restraint member” in the claims. In the present embodiment, the heat storage material restraint cover 20 is formed in a cylindrical shape, but it may have a cylindrical shape or another shape having a rectangular cross section.

The heat storage body 90 for heat generation includes a heat storage material 91 and a heat storage material restraint cover 92 (see FIGS. 2 and 3). In the present embodiment, the chemical heat storage reactor 101 includes eight heat storage bodies 90 for heat generation. The heat storage body 90 generates heat by using the steam generated by the heat generated by the steam generation heat storage body 1.

The heat storage material 91 is a molded body of calcium oxide, which is one of the oxides of an alkaline earth metal, like the heat storage material 10 of the heat storage body 1 for steam generation. The heat storage material 91 is formed into a columnar shape by kneading granules of calcium oxide with a binder such as clay mineral and firing them.

The heat storage material restraint cover 92 is a cylindrical member arranged outside the heat storage material 91, and has a through hole 93 into which the heat storage material 91 is inserted along the central axis C90 of the heat storage body 90 for heat generation (FIG. FIG. 2). In the present embodiment, the heat storage material restraint cover 92 is formed with holes 94 at predetermined positions, which restrict the passage of the particles constituting the heat storage material 91, while allowing the passage of steam.

In the present embodiment, the accommodation space 8 of the chemical heat storage reactor 101 has a central axis C1 of each of the three heat storage bodies 1 for steam generation and a central axis C90 of each of the eight heat storage bodies 90 for heat generation. , Are arranged along the z-axis direction (see FIG. 2). That is, the steam generation heat storage body 1 and the heat generation heat storage body 90 have a central axis C1 of each of the three steam generation heat storage bodies 1 and a central axis C90 of each of the eight heat generation heat storage bodies 90. , Are arranged substantially parallel to the z-axis. At this time, the three steam generation heat storage bodies 1 are arranged so as to be arranged along the x-axis direction. Four heat storage bodies 90 for heat generation, which are arranged so as to be arranged along the x-axis direction, are arranged on each of the plus side and the minus side in the y-axis direction of the three steam generation heat storage bodies 1. (See Fig. 2).

In the chemical heat storage reactor 101, as described above, by arranging the three cylindrical heat storage bodies 1 for steam generation and the eight cylindrical heat storage bodies 90 for heat generation, they are placed between the adjacent heat storage bodies. , A gap is formed. In the present embodiment, as shown in FIG. 2, the gap between the steam generation heat storage body 1 and the heat generation heat storage body 90 is set as the first gap Sp1, and the steam generation heat storage body 1 or the heat generation heat storage body 90. The gap between the reaction vessel 7 and the reaction vessel 7 is referred to as a second gap Sp2.

In the present embodiment, a plurality of through holes 5c and 5d are formed on the wall of the reaction vessel 7 on the manifold 5b side (see FIG. 3). Water supplied to the accommodation space 8 flows through each of the through holes 5c and 5d. The manifold 5b distributes the water flow so that the reaction water supplied by the tank 6 flows through the through hole 5c and the steam water flows through the through hole 5d.

In the present embodiment, as shown in FIG. 3, the accommodation space 8 is partitioned by a plurality of partition members 9a, 9b, 9c. The partition member 9a is connected to the inner wall of the reaction vessel 7 and the end portion of the steam generation heat storage body 1 on the positive side in the z-axis direction. The accommodation space 8a partitioned by the partition member 9a communicates with the through hole 5c and the flow path 22a of the steam generation heat storage body 1. The partition member 9b is connected to the inner wall of the reaction vessel 7 and the end portion of the heat storage body 1 for steam generation on the negative side in the z-axis direction. The accommodation space 8b partitioned by the partition member 9b communicates with the flow path 22a of the steam generation heat storage body 1. The partition member 9c is connected to the inner wall of the reaction vessel 7 and the end portion of the heat storage body 90 for heat generation on the positive side in the z-axis direction. The partition member 9c forms a flow path 8c that communicates with the through hole 5d and the first gap Sp1 together with the partition member 9a.

FIG. 7 is a first diagram illustrating the operation of the chemical heat storage reactor 101. FIG. 8 is a second diagram illustrating the operation of the chemical heat storage reactor 101. Next, the heat dissipation action of the chemical heat storage device 100 will be described. When the chemical heat storage device 100 dissipates heat, reaction water and steam water are supplied from the tank 6 to the chemical heat storage reactor 101 via the connection flow path 5a and the manifold 5b. The reaction water flows into the accommodation space 8a of the chemical heat storage reactor 101 through the through hole 5c. The steam water flows into the first gap Sp1 through the through hole 5d and the flow path 8c.

The reaction water flows into the plurality of flow paths 22a of the steam generation heat storage body 1 through the accommodation space 8a (solid arrow W1 shown in FIG. 8). The reaction water flowing through the flow path 22a undergoes a hydration reaction with the heat storage material 10 of the steam generation heat storage body 1. When the reaction water and the heat storage material 10 undergo a hydration reaction, the heat storage material 10 generates heat. Since the reaction water that has passed through the steam generation heat storage body 1 without undergoing a hydration reaction with the heat storage material 10 stays in the accommodation space 8b, the reaction water is suppressed from reacting with the heat storage material 91 of the heat storage material 90. NS.

The heat generated in the heat storage material 10 heats the steam water (solid line arrow W2 shown in FIG. 8) flowing through the first gap Sp1 through the heat storage material restraint cover 20 (dotted line arrow H1 shown in FIGS. 7 and 8). ). When the steam generated from the steam water by the heat of the heat storage material 10 flows on the negative side of the heat storage body 90 in the z-axis direction (dotted arrow V1 shown in FIG. 8), it directly flows into the inside of the heat storage material restraint cover 92. do. Further, when the steam that did not directly flow into the inside of the heat storage material restraint cover 92 when flowing on the negative side of the heat storage body 90 in the z-axis direction flows through the second gap Sp2 (dotted arrow V2 shown in FIG. 8). ), It flows into the inside of the heat storage material restraint cover 92 through the hole 94 formed in the heat storage material restraint cover 92. The steam flowing into the heat storage material restraint cover 92 undergoes a hydration reaction with the heat storage material 91 to generate heat in the heat storage material 91. The heat generated in the heat storage material 91 is released to the outside of the chemical heat storage reactor 101 via the reaction vessel 7.

FIG. 9 is a diagram illustrating the operation of the steam generation heat storage body 1. FIG. 9 shows a cross-sectional view including the central axis C1 of the steam generation heat storage body 1. Here, the action of the steam generation heat storage body 1 when the chemical heat storage device 100 dissipates heat will be described.

In the steam generation heat storage body 1, as shown in FIG. 9, when the reaction water flows into the flow path 22a from one end E11 side of the steam generation heat storage body 1 (solid arrow W1 shown in FIG. 9), the central axis. It flows along C1 towards the other end E12. The heat storage material 10 generates heat by hydrating with the reaction water W11 flowing through the flow path 22a. The heat generated by the heat storage material 10 is released to the outside of the heat storage material restraint cover 20 (dotted line arrow H1 shown in FIG. 9), and steam water flowing outside the heat storage material restraint cover 20 is turned into steam. In the steam generation heat storage body 1, the reaction water W11 flowing into the flow path 22a from one end E11 side flows through the flow path 22a formed along the central axis C1. It can reach the other end, E12. That is, since the reaction water is distributed throughout the heat storage material 10, the hydration reaction proceeds as a whole in the heat storage material 10, and heat is generated from the entire heat storage material 10. In this way, in the steam generation heat storage body 1, the reaction water flowing through one end of the steam generation heat storage body 1 flows into the flow path 22a, so that the reaction water can be distributed throughout the heat storage material 10. can.

Generally, when a heat storage material that generates heat by a hydration reaction is reacted with steam, the steam tends to diffuse uniformly inside the heat storage material, so that the hydration reaction with steam is the same for the entire heat storage material. It is easy to proceed at the right timing, and the heat storage material is easy to expand uniformly. On the other hand, when the heat storage material is hydrated with the reaction water, the reaction water is less likely to diffuse inside the heat storage material than steam, so that the heat storage material expands from the portion that has reacted with the reaction water. In a heat storage body in which the heat storage material is covered with a heat storage material restraint cover, if a reaction water inflow port is provided in a part of the heat storage material restraint cover, the heat storage material expands from the heat storage material near the inflow port. Further, as described above, since the reaction water is difficult to diffuse, it is difficult for the reaction water to reach a portion away from the inflow port. Therefore, the hydration reaction of the heat storage material at a position away from the inflow port is slower than the hydration reaction of the heat storage material near the inflow port, so that the expansion due to the hydration reaction of the heat storage material is non-uniform. There is a risk that the heat storage material restraint cover will be damaged.

According to the steam generation heat storage body 1 of the present embodiment described above, there is a flow path 22a through which reaction water flows between the outer surface 10a of the heat storage material 10 and the inner side surface 20a of the heat storage material restraint cover 20. It is formed by the groove portion 22. As a result, as shown in FIG. 9, the reaction water can be distributed throughout the heat storage material 10, so that the hydration reaction of the heat storage material 10 can proceed at the same timing throughout the heat storage material 10. .. Therefore, since the expansion of the heat storage material 10 due to the hydration reaction becomes uniform, damage to the heat storage material restraint cover 20 due to non-uniform expansion can be suppressed.

Further, according to the steam generation heat storage body 1 of the present embodiment, a plurality of groove portions 22 are arranged on the inner side surface 20a of the heat storage material restraint cover 20. The plurality of groove portions 22 extend along the direction of the central axis C20 of the heat storage material restraint cover 20 and are arranged side by side along the circumferential direction of the heat storage material restraint cover 20. As a result, in the steam generation heat storage body 1, the reaction water W11 flowing into the flow path 22a from one end E11 side flows through the flow path 22a formed along the central axis C1. It can be distributed throughout the heat storage material 10. Therefore, the expansion of the heat storage material 10 due to the hydration reaction becomes uniform, and damage to the heat storage material restraint cover 20 due to non-uniform expansion can be suppressed.

Further, according to the chemical heat storage reactor 101 of the present embodiment, the steam for the heat storage material 91 of the heat storage body 90 for generating heat to generate heat is generated by the reaction water of the heat storage body 1 for steam generation and the heat storage material 10. Produced by hydration reaction. At this time, as shown in FIG. 8, the reaction water flows only in the accommodation space 8a, the flow path 22a of the steam generation heat storage body 1, and the accommodation space 8b inside the reaction vessel 7, so that the reaction water flows. It is possible to suppress direct contact with the heat storage material 91 of the heat storage body 90 for heat generation. As a result, it is possible to prevent the heat storage material 91 from non-uniformly expanding due to contact between the heat storage material 91 and the reaction water, and to prevent the heat storage material restraint cover 92 from being damaged.

<Second Embodiment>
FIG. 10 is a schematic view of a heat storage material included in the steam generation heat storage body 2 of the second embodiment. FIG. 11 is a diagram illustrating the operation of the steam generation heat storage body 2. The steam generation heat storage body 2 of the second embodiment is different from the steam generation heat storage body of the first embodiment (FIG. 4) in the direction in which the member in which the groove is arranged and the flow path are formed.

The steam generation heat storage body 2 of the present embodiment includes a heat storage material 30 and a heat storage material restraint cover 40. The steam generation heat storage body 2 generates heat by using the reaction water supplied by the tank 6. The heat storage body 2 for steam generation corresponds to the "heat storage body" in the claims. The heat storage material restraint cover 40 corresponds to the "restraint member" in the claims.

The heat storage material 30 is, for example, a molded body of calcium oxide, which is one of the oxides of alkaline earth metals. The heat storage material 30 is formed so as to have a predetermined shape by kneading granules of calcium oxide with a binder such as clay mineral and firing them. In the present embodiment, the heat storage material 30 is formed in a cylindrical shape. A plurality of groove portions 32 are arranged on the outer surface 30a of the heat storage material 30. The plurality of groove portions 32 are extended along the direction of the central axis C30 of the heat storage material 30 substantially coaxial with the central axis C2 of the steam generation heat storage body 2, and are arranged side by side along the circumferential direction of the heat storage material 30. There is. In the present embodiment, the groove portion 32 is formed on the outer surface 30a of the heat storage material 30 up to both ends of the heat storage material 30 as shown in FIG. 10B. As shown in FIG. 10A, when the heat storage material restraint cover 40 is arranged outside the heat storage material 30, the reaction water can flow through the groove 32 of the heat storage material 30 and the inner side surface 40a of the heat storage material restraint cover 40. The flow path 32a is formed inside the heat storage material restraint cover 40. The plurality of groove portions 32 correspond to "flow path forming portions" in the claims.

The heat storage material restraint cover 40 is a cylindrical member arranged outside the cylindrical heat storage material 30. The heat storage material restraint cover 40 is formed so as to cover the outer surface 30a of the heat storage material 30. The heat storage material restraint cover 40 is formed with a through hole into which the heat storage material 30 is inserted along a central axis substantially coaxial with the central axis C2 of the heat storage body 2 for steam generation. In the present embodiment, the heat storage material restraint cover 40 is formed in a cylindrical shape, but may have a cylindrical shape or another shape having a rectangular cross section according to the shape of the heat storage material 30.

FIG. 11 is a diagram for explaining the operation of the steam generation heat storage body 2, and is a cross-sectional view including the central axis C2 of the steam generation heat storage body 2. In the steam generation heat storage body 2, as shown in FIG. 11, when the reaction water flows into the flow path 32a from one end E21 side of the steam generation heat storage body 2 (solid arrow W1 shown in FIG. 11), the central axis. It flows along C2 towards the other end E22. The heat storage material 30 generates heat by undergoing a hydration reaction with the reaction water W11 flowing through the flow path 32a. The heat generated by the heat storage material 30 is released to the outside of the heat storage material restraint cover 40 (dotted line arrow H1 shown in FIG. 11), and steam water flowing outside the heat storage material restraint cover 40 is turned into steam. In the steam generation heat storage body 2, the reaction water W11 flowing into the flow path 32a from one end E21 side flows through the flow path 32a formed along the central axis C2, so that the steam generation heat storage body 2 It can reach the other end, E22. That is, since the reaction water is distributed throughout the heat storage material 30, the hydration reaction proceeds in the heat storage material 30 as a whole, and heat is generated from the entire heat storage material 30. In this way, in the steam generation heat storage body 2, the reaction water flowing through one end of the steam generation heat storage body 2 flows into the flow path 32a, so that the reaction water can be distributed throughout the heat storage material 30. can.

According to the steam generation heat storage body 2 of the present embodiment described above, a flow path 32a through which reaction water flows is formed between the groove portion 32 of the heat storage material 30 and the heat storage material restraint cover 40. As a result, the reaction water can flow to the end of the heat storage material 30, so that the hydration reaction of the heat storage material 30 can be carried out in a wide range. Therefore, damage to the heat storage material restraint cover 40 due to non-uniform expansion can be suppressed.

Further, according to the steam generation heat storage body 2 of the present embodiment, a plurality of groove portions 32 are arranged on the outer surface 30a of the heat storage material 30. The plurality of groove portions 32 extend along the direction of the central axis C30 of the heat storage material 30, and are arranged side by side along the circumferential direction of the heat storage material 30. As a result, the reaction water supplied to the heat storage material 30 from the axial direction of the heat storage material restraint cover 40 flows through the flow path 32a formed between the groove 32 and the heat storage material restraint cover 40, so that the reaction water is supplied. It is supplied to the side opposite to the side (see FIG. 11). Therefore, since the reaction water can be distributed throughout the heat storage material 30, the expansion of the heat storage material 30 due to the hydration reaction becomes uniform, and damage to the heat storage material restraint cover 40 due to non-uniform expansion can be suppressed. ..

<Third Embodiment>
FIG. 12 is a schematic view of the steam generation heat storage body 3 of the third embodiment. FIG. 13 is a first diagram illustrating the operation of the chemical heat storage reactor 101 in the present embodiment. FIG. 14 is a second diagram illustrating the operation of the chemical heat storage reactor 101 in the present embodiment. The steam generation heat storage body 3 of the third embodiment has a different configuration of the heat storage material restraint cover as compared with the steam generation heat storage body (FIG. 10) of the second embodiment.

The heat storage body 3 for steam generation of the present embodiment includes a heat storage material 30 and a heat storage material restraint cover 50. The steam generation heat storage body 3 generates heat by using the reaction water supplied by the tank 6. The heat storage body 3 for steam generation corresponds to the "heat storage body" in the claims.

The heat storage material restraint cover 50 is a cylindrical member arranged outside the heat storage material 30. As shown in FIG. 12A, the heat storage material restraint cover 50 is formed so as to cover the outer surface 30a of the heat storage material 30. The heat storage material restraint cover 50 is formed with a through hole 51 into which the heat storage material 30 is inserted along a central axis substantially coaxial with the central axis C3 of the heat storage body 3 for steam generation. The heat storage material restraint cover 50 is formed with holes 52 at predetermined positions that restrict the passage of the particles constituting the heat storage material 30 while allowing the passage of the reaction water (see FIG. 12B). .. That is, the heat storage material restraint cover 50 is formed of a hole forming portion P53 in which the hole 52 is formed and a wall portion P54 in which the hole 52 is not formed and the passage of reaction water or steam is not allowed. In the present embodiment, the heat storage material restraint cover 50 is formed in a cylindrical shape, but may have a cylindrical shape or another shape having a rectangular cross section according to the shape of the heat storage material 30.

In the chemical heat storage reactor 101 of the present embodiment, as shown in FIG. 13, in the gap between the steam generation heat storage body 3 and the heat generation heat storage body 90, the hole forming portion P53 of the steam generation heat storage body 3 The gap formed is referred to as a first gap Sp31, and the gap formed by the wall portion P54 of the steam generation heat storage body 3 is referred to as a second gap Sp32. Further, the gap between the steam generation heat storage body 3 or the heat generation heat storage body 90 and the reaction vessel 7 is referred to as a third gap Sp33.

In the present embodiment, as shown in FIG. 14, the accommodation space 8 is partitioned by a plurality of partition members 9d, 9e, 9f, and 9g. The partition member 9d is connected to the positive side of the wall portion P54 of the steam generation heat storage body 3 in the z-axis direction and the inner wall of the reaction vessel 7, and the partition member 9e is connected to the wall portion P54 of the steam generation heat storage body 3. Is connected to the negative side in the z-axis direction and the inner wall of the reaction vessel 7. The partition member 9f is connected to the positive side in the z-axis direction of the portion of the heat storage body 90 where the hole 94 is not formed and the inner wall of the reaction vessel 7. The partition member 9g is connected to the negative side in the z-axis direction of the portion of the heat storage body 90 where the hole 94 is not formed and which forms the first gap Sp31, and the inner wall of the reaction vessel 7. .. As a result, as shown in FIG. 14, the reaction water flowing through the through hole 5c of the reaction vessel 7 flows through the first gap Sp31, but does not flow into the second gap Sp32, so that the reaction water does not flow into the second gap Sp32, so that the reaction water flows into the heat storage body 90 for heat generation. The reaction with the heat storage material 91 is suppressed.

Next, the heat dissipation action of the chemical heat storage device 100 will be described. When the chemical heat storage device 100 dissipates heat, reaction water and steam water are supplied from the tank 6 to the chemical heat storage reactor 101 via the connection flow path 5a and the manifold 5b.

The reaction water supplied by the tank 6 flows into the flow path 8d of the chemical heat storage reactor 101 through the through hole 5c. When the chemical heat storage device 100 first dissipates heat, the reaction water passes through the flow path 8d and mainly flows into a plurality of flow paths 32a included in the steam generation heat storage body 3 (solid arrow W1 shown in FIG. 14). .. The reaction water flowing through the flow path 32a undergoes a hydration reaction with the heat storage material 30. As a result, the heat storage material 10 generates heat. The reaction water that did not flow into the flow path 32a in the flow path 8d flows through the first gap Sp31 (solid arrow W11 shown in FIG. 14), and passes through the hole 52 of the steam generation heat storage body 3 to be a heat storage material. It is also possible to flow into the inside of the restraint cover 50 and react with the heat storage material 30 (solid arrow W12 shown in FIG. 14). Since the reaction water that has flowed to the side opposite to the manifold 5b of the steam generation heat storage body 3 without hydration reaction with the heat storage material 30 stays in the flow path 8e, the reaction water and the heat storage material 91 of the heat storage body 90 are retained. The reaction with is suppressed.

The steam water supplied by the tank 6 flows through the through hole 5d and through the second gap Sp32. The steam water flowing through the second gap Sp32 (solid arrow W2 shown in FIG. 14) is heated by the heat released from the steam generation heat storage body 3 (dotted arrow H1 shown in FIGS. 13 and 14) to become steam. (Dotted arrows V1 and V2 shown in FIG. 14). The steam generated in the second gap Sp32 is restrained by the heat storage material from the negative end of the heat storage body 90 in the z-axis direction or through the hole 94 formed in the heat storage material restraint cover 92. It flows into the inside of the cover 92. The steam flowing into the heat storage material restraint cover 92 undergoes a hydration reaction with the heat storage material 91 to generate heat in the heat storage material 91. The heat generated in the heat storage material 91 is released to the outside of the chemical heat storage reactor 101 via the reaction vessel 7.

When the chemical heat storage device 100 first dissipates heat, when the heat storage material 30 and the reaction water undergo a hydration reaction, the heat storage material 30 expands, so that the flow path 32a may disappear. In this case, when the chemical heat storage device 100 dissipates heat for the second time, the reaction water mainly flows through the first gap Sp31 and passes through the hole 52 of the steam generation heat storage body 3, and the heat storage material restraint cover 50. It flows into the inside of the heat storage material 30 and reacts with the heat storage material 30. Since the first gap Sp31 is formed from the end of the reaction vessel 7 on the manifold 5b side to the opposite end, the reaction water can be supplied to the side opposite to the manifold 5b of the heat storage material 30. can.

According to the steam generation heat storage body 3 of the present embodiment described above, a flow path 32a for flowing reaction water is formed between the groove portion 32 arranged in the heat storage material 30 and the heat storage material restraint cover 50. Will be done. As a result, the reaction water can flow to the end of the heat storage material 30, so that the hydration reaction of the heat storage material 30 can be carried out in a wide range. Therefore, damage to the heat storage material restraint cover 50 due to non-uniform expansion can be suppressed.

Further, according to the steam generation heat storage body 3 of the present embodiment, when the chemical heat storage device 100 dissipates heat for the second time, the heat storage material 30 has no flow path 32a due to expansion due to the first hydration reaction. Then, the reaction water is supplied through the first gap Sp31 and the hole 52. As a result, the heat storage material 30 of the heat storage body 3 for steam generation can undergo a hydration reaction with the reaction water in the entire area even in the second and subsequent heat dissipation, and the hydration reaction in the heat storage material 30 as compared with the second embodiment. The speed can be improved.

<Fourth Embodiment>
FIG. 15 is a perspective view of the steam generation heat storage body 4 of the fourth embodiment. FIG. 16 is a schematic view of a heat storage material restraint cover 60 included in the steam generation heat storage body 4 of the present embodiment. The steam generation heat storage body 4 of the fourth embodiment is different from the steam generation heat storage body of the first embodiment (FIG. 4) in the direction in which the flow path is formed.

The steam generation heat storage body 4 of the present embodiment includes a heat storage material 10 and a heat storage material restraint cover 60. The steam generation heat storage body 4 generates heat by using the reaction water supplied by the tank 6. The heat storage body 4 for steam generation corresponds to the "heat storage body" in the claims. In the steam generation heat storage body 4, the heat storage body 4 is inserted into the through hole 61 formed in the heat storage material 10.

FIG. 16A is a perspective view of the heat storage material restraint cover 60, and FIG. 16B is a view of the heat storage material restraint cover 60 viewed from a direction along the central axis C60 of the heat storage material restraint cover 60. 16 (c) is a cross-sectional view including the central axis C60 of the heat storage material restraint cover 60. FIG. 16C shows a cross-sectional view of the heat storage material 10 (two-dot chain line 10 shown in FIG. 16C) inserted inside the heat storage material restraint cover 60 for convenience of explanation.

The heat storage material restraint cover 60 is a cylindrical member arranged outside the heat storage material 10. The heat storage material restraint cover 60 is formed so as to cover the outer surface 10a (see FIG. 16C) of the heat storage material 10. A through hole 61 is formed in the heat storage material restraint cover 60 along the central axis C60. A plurality of groove portions 62 are arranged on the inner side surface 60a of the heat storage material restraint cover 60 forming the through hole 61. The plurality of groove portions 62 extend along the circumferential direction of the heat storage material restraint cover 60, and are arranged side by side along the direction of the central axis C60 of the heat storage material restraint cover 60. In the present embodiment, the groove portion 62 is formed in an annular shape on the inner side surface 60a of the heat storage material restraint cover 60. As shown in FIG. 16C, when the heat storage material 10 is arranged in the through hole 61, the flow path 62a through which the reaction water can flow is formed by the outer surface 10a of the heat storage material 10 and the groove portion 62 of the heat storage material restraint cover 60. Formed inside. The plurality of groove portions 62 correspond to "flow path forming portions" in the claims. The heat storage material restraint cover 60 corresponds to the “restraint member” in the claims.

In the present embodiment, a hole 63 is formed in a predetermined portion of the heat storage material restraint cover 60. The holes 63 restrict the passage of the granules constituting the heat storage material 10 while allowing the passage of the reaction water. That is, as shown in FIG. 16B, the heat storage material restraint cover 60 is formed by a hole forming portion P63 in which the hole 63 is formed and a wall portion P64 that does not allow the passage of reaction water or steam. .. The ratio of the hole forming portion P63 and the wall portion P64 in the heat storage material restraint cover 60 varies depending on the position arranged in the accommodation space 8, and can be arbitrarily set. Specifically, the hole forming portion P63 is arranged corresponding to the region where the reaction water flows, and the wall portion P64 is arranged corresponding to the region where the heat storage body 90 for heat generation generated by steam is arranged. In the present embodiment, the heat storage material restraint cover 60 is formed in a cylindrical shape, but it may have a cylindrical shape or another shape having a rectangular cross section.

FIG. 17 is a first diagram illustrating the operation of the steam generation heat storage body 4. FIG. 18 is a second diagram illustrating the operation of the steam generation heat storage body 4. FIG. 17 shows a cross-sectional view including the central axis C4 of the heat storage body 4 for steam generation, and FIG. 18 shows a cross-sectional view perpendicular to the central axis C4 of the heat storage body 4 for steam generation. .. Here, the action of the steam generation heat storage body 4 when the chemical heat storage device 100 dissipates heat will be described.

The reaction water (solid arrow W0 in FIGS. 17 and 18) flowing outside the hole forming portion P63 of the heat storage body 4 for steam generation flows into the inside of the heat storage material restraint cover 60 through the hole 63 of the hole forming portion P63. (Solid arrow W1 in FIGS. 17 and 18). The reaction water that has flowed into the inside of the heat storage material restraint cover 60 flows through the flow path 62a formed by the outer surface 10a of the heat storage material 10 and the groove portion 62 (dotted line arrow W12 in FIG. 17 and solid line arrow W12 in FIG. 18). .. That is, the reaction water flows inside the heat storage material restraint cover 60 along the groove portion 62. The reaction water flowing through the flow path 62a hydrates with the heat storage material 10 while flowing in the heat storage material restraint cover 60 toward a position opposite to the position where the reaction water flows into the inside of the heat storage material restraint cover 60. react. When the amount of reaction water flowing into the inside of the heat storage material restraint cover 60 is relatively large, a part of the reaction water reaches a position opposite to the position where the reaction water has flowed into the inside of the heat storage material restraint cover 60. Therefore, the reaction water is distributed throughout the heat storage material 10. As a result, in the heat storage material 10, the hydration reaction proceeds at the same timing as a whole. The heat generated by the progress of the hydration reaction is released to the outside of the heat storage material restraint cover 60 via the wall portion P64 (dotted arrow H1 in FIGS. 17 and 18).

According to the steam generation heat storage body 4 of the present embodiment described above, there is a flow path 62a through which reaction water flows between the outer surface 10a of the heat storage material 10 and the inner surface 60a of the heat storage material restraint cover 60. It is formed by a groove 62. As a result, the reaction water can be distributed throughout the heat storage material 10, so that the hydration reaction of the heat storage material 10 can proceed at the same timing throughout the heat storage material 10. Therefore, since the expansion of the heat storage material 10 due to the hydration reaction becomes uniform, damage to the heat storage material restraint cover 60 due to non-uniform expansion can be suppressed.

Further, according to the steam generation heat storage body 4 of the present embodiment, the plurality of groove portions 62 are extended along the circumferential direction of the heat storage material restraint cover 60, and are along the direction of the central axis C60 of the heat storage material restraint cover 60. They are arranged side by side. As a result, the reaction water flowing along the central axis C4 on the outside of the heat storage material restraint cover 60 flows through the groove 62 on the inside of the heat storage material restraint cover 60, and flows to the side opposite to the side to which the reaction water is supplied. be able to. Therefore, since the reaction water can be distributed throughout the heat storage material 10, the expansion of the heat storage material 10 due to the hydration reaction becomes uniform, and damage to the heat storage material restraint cover 60 due to non-uniform expansion can be suppressed. ..

<Fifth Embodiment>
FIG. 19 is a schematic view of the heat storage material 70 included in the steam generation heat storage body 5 of the fifth embodiment. FIG. 20 is a first diagram illustrating the operation of the steam generation heat storage body 5. FIG. 21 is a second diagram illustrating the operation of the steam generation heat storage body 5. FIG. 20 shows a cross-sectional view including the central axis C5 of the heat storage body 5 for steam generation, and FIG. 21 shows a cross-sectional view perpendicular to the central axis C5 of the heat storage body 5 for steam generation. .. The steam generation heat storage body 5 of the fifth embodiment is different from the steam generation heat storage body 2 of the second embodiment (FIG. 10) in the direction in which the flow path is formed.

The heat storage body 5 for steam generation of the present embodiment includes a heat storage material 70 and a heat storage material restraint cover 40. The steam generation heat storage body 5 generates heat by using the reaction water supplied by the tank 6. The heat storage body 5 for steam generation corresponds to the "heat storage body" in the claims.

The heat storage material 70 is, for example, a molded body of calcium oxide, which is one of the oxides of alkaline earth metals. The heat storage material 70 is formed so as to have a predetermined shape by kneading granules of calcium oxide with a binder such as clay mineral and firing them. In the present embodiment, the heat storage material 70 is formed in a substantially cylindrical shape. A plurality of groove portions 72 are arranged on the outer surface 70a of the heat storage material 70. The plurality of groove portions 72 extend along the circumferential direction of the heat storage material 70, and are arranged side by side along the central axis C70 of the heat storage material 70. In the present embodiment, the groove portion 72 is formed in an annular shape on the outer surface 70a of the heat storage material 70. The plurality of groove portions 72 correspond to "flow path forming portions" in the claims.

The heat storage material restraint cover 40 is a cylindrical member arranged outside the heat storage material 70. The heat storage material restraint cover 40 is formed with a through hole into which the heat storage material 70 is inserted along the central axis. The heat storage material restraint cover 40 is formed with holes 42 at predetermined positions that restrict the passage of the particles constituting the heat storage material 70 while allowing the passage of the reaction water (see FIG. 20). That is, the heat storage material restraint cover 40 is formed of a hole forming portion P43 in which the hole 42 is formed and a wall portion P44 in which the hole 42 is not formed and the passage of reaction water or steam is not allowed. When the heat storage material 70 is inserted into the through hole of the heat storage material restraint cover 40, the flow path 72a through which the reaction water can flow is formed by the inner side surface 40a and the groove 72 forming the through hole of the heat storage material restraint cover 40. It is formed inside 40 (see FIG. 19B).

Next, the action of the steam generation heat storage body 5 will be described. The reaction water (solid arrow W0 in FIGS. 20 and 21) flowing outside the hole forming portion P43 of the heat storage body 5 for steam generation flows into the inside of the heat storage material restraint cover 40 through the hole 42 of the hole forming portion P43. (Solid arrow W1 in FIGS. 20 and 21). The reaction water that has flowed into the inside of the heat storage material restraint cover 40 flows through the flow path 72a formed by the groove 72 of the heat storage material 70 and the inner side surface 40a of the heat storage material restraint cover 40 (dotted arrow W12 in FIG. 20 and FIG. 21 solid line arrow W12). Since the reaction water flowing through the flow path 72a can reach a position opposite to the position where the reaction water has flowed into the inside of the heat storage material restraint cover 40, the reaction water will spread throughout the heat storage material 70. .. As a result, in the heat storage material 70, the hydration reaction proceeds at the same timing as a whole, and heat is generated. The heat generated by the progress of the hydration reaction is released to the outside of the heat storage material restraint cover 40 via the wall portion P44 (dotted arrow H1 in FIGS. 20 and 21).

According to the steam generation heat storage body 5 of the present embodiment described above, a flow path 72a through which reaction water flows is formed by a groove 72 between the heat storage material 70 and the inner side surface 40a of the heat storage material restraint cover 40. Has been done. As a result, the reaction water can be distributed to the entire heat storage material 70, so that the hydration reaction of the heat storage material 70 can be performed at the same timing in the entire heat storage material 70. Therefore, damage to the heat storage material restraint cover 40 due to non-uniform expansion can be suppressed.

Further, according to the steam generation heat storage body 5 of the present embodiment, a plurality of groove portions 72 are formed on the outer surface 70a of the heat storage material 70. The plurality of groove portions 72 extend along the circumferential direction of the heat storage material 70, and are arranged side by side along the direction of the central axis C70 of the heat storage material 70. As a result, the reaction water supplied to the heat storage material 70 from the radial direction of the heat storage material 70 flows through the groove 72 and is supplied to the side opposite to the side to which the reaction water is supplied. Therefore, since the reaction water can be distributed throughout the heat storage material 70, the expansion of the heat storage material 70 due to the hydration reaction becomes uniform, and damage to the heat storage material restraint cover 40 due to non-uniform expansion can be suppressed. ..

<Modified example of this embodiment>
The present invention is not limited to the above-described embodiment, and can be implemented in various aspects without departing from the gist thereof. For example, the following modifications are also possible.

[Modification 1]
In the above-described embodiment, the grooves are extended along the circumferential direction or the axial direction of the heat storage body, and a plurality of grooves are arranged side by side along the axial direction or the circumferential direction of the heat storage body. However, the direction in which the grooves are extended and the direction in which the grooves are arranged side by side are not limited to this. For example, it may be formed in a spiral shape on the inner surface of the heat storage material restraint cover or the outer surface of the heat storage material.

[Modification 2]
In the above-described embodiment, a plurality of grooves are arranged. However, the number of grooves may be one.

[Modification 3]
The "flow path forming portion" described in the above-described embodiment is, for example, in one steam generation heat storage body, on one heat storage material restraint cover, the groove portion 22 of the first embodiment and the groove portion 62 of the fourth embodiment. And may be formed. Further, in one steam generation heat storage body, the groove portion 22 of the first embodiment may be formed on the heat storage material restraint cover, and the groove portion 72 of the fifth embodiment may be formed on the heat storage material. As a result, in the heat storage body for steam generation, the reaction water can be easily distributed in both the axial direction and the circumferential direction of the heat storage material, so that the expansion of the heat storage material becomes more uniform, and the heat storage material restraint cover due to the non-uniform expansion Damage can be further suppressed.

[Modification example 4]
In the first embodiment and the second embodiment, it is assumed that the groove portion is formed on the inner surface of the heat storage material restraint cover or the outer surface of the heat storage material to both ends of the heat storage material restraint cover or the heat storage material. However, the groove may be formed in a part of the groove, not to both ends. Further, in the third embodiment and the fourth embodiment, the groove portion is formed on the inner surface of the heat storage material restraint cover or the outer surface of the heat storage material so as to form an annular shape. However, the groove is not limited to an annular shape. It may be formed in an arc shape.

Although the present embodiment has been described above based on the embodiments and modifications, the embodiments of the above-described embodiments are for facilitating the understanding of the present embodiment and do not limit the present embodiment. This aspect may be modified or improved without departing from its spirit and claims, and this aspect includes its equivalents. In addition, if the technical feature is not described as essential in the present specification, it may be deleted as appropriate.

1, 2, 3, 4, 5 ... Heat storage body for steam generation 5a ... Connection flow path 5b ... Manifold 5c, 5d ... Through hole 6 ... Tank 7 ... Reaction vessel 8, ... Storage space 9, 9a, 9b, 9c, 9d , 9e, 9f, 9g ... Partition members 10, 30, 70, 91 ... Heat storage material 10a, 30a, 70a ... Outer surface 20, 40, 50, 60, 92 ... Heat storage material restraint cover 20a, 40a, 60a ... Inner surface 21 , 51, 61 ... Through holes 22, 32, 62, 72 ... Grooves 22a, 32a, 62a, 72a ... Flow paths 23, 42, 52, 63, 94 ... Holes 90 ... Heat storage reactor 100 ... Chemical heat storage device 101 ... Chemical heat storage reactor P43, P53, P63 ... Hole forming part P44, P54, P64 ... Wall part Sp1, Sp31 ... First gap Sp2, Sp32 ... Second gap Sp33 ... Third gap

Claims (6)

It is a heat storage body
A heat storage material that produces steam by reacting with reaction water,
A tubular restraint member arranged on the outside of the heat storage material and
A flow path forming portion formed on at least one of the heat storage material and the restraint member and forming a flow path for flowing reaction water supplied to the heat storage material between the heat storage material and the restraint member. Prepare, prepare
Heat storage body. The heat storage body according to claim 1.
The flow path forming portion is a groove portion formed on the inner surface of the restraining member.
The groove portions extend along the axial direction of the restraint member, and a plurality of the groove portions are arranged side by side along the circumferential direction of the restraint member.
Heat storage body. The heat storage body according to claim 1 or 2.
The flow path forming portion is a groove portion formed on the outer surface of the heat storage material.
The groove portions extend along the axial direction of the heat storage material, and a plurality of the groove portions are arranged side by side along the circumferential direction of the heat storage material.
Heat storage body. The heat storage body according to any one of claims 1 to 3.
The flow path forming portion is a groove portion formed on the inner surface of the restraining member.
The groove portions extend along the circumferential direction of the restraint member, and a plurality of the groove portions are arranged side by side along the axial direction of the restraint member.
Heat storage body. The heat storage body according to any one of claims 1 to 4.
The flow path forming portion is a groove portion formed on the outer surface of the heat storage material.
The groove portions extend along the circumferential direction of the heat storage material, and a plurality of the groove portions are arranged side by side along the axial direction of the heat storage material.
Heat storage body. It is a chemical heat storage reactor
The heat storage body according to any one of claims 1 to 5,
A heat storage body for heat generation that generates heat by reacting with the steam generated by the heat storage body,
A reaction vessel for accommodating the heat storage body and the heat storage body for heat generation is provided.
Chemical heat storage reactor.

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