JP2018059684A - Chemical heat storage reactor and chemical heat storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve improvement in bond strength between a lamination unit and piping in a chemical heat storage system.SOLUTION: A reactor 20 includes: a lamination unit 24 in which a plurality of laminates 51 are laminated constituted by including a heat storage material compact 40, a frame part 44 for storing a heat storage material inside and having a first space and a second space in which a heating medium flows, a heat exchange part 42 which is bonded with the frame part 44, which is formed to be thinner than the frame part 44 and in which the heating medium flows, a reaction medium dissipation layer 36 which is arranged on one side of the heat storage material compact 40 and in which a reaction medium flows, and a filter 34 arranged between the heat storage material compact 40 and the reaction medium dissipation layer 36; and a reaction vessel 22 for storing the lamination unit 24. As the first space and the second space in which the heating medium flows are provided at the frame part 44, piping communicating with the first space and the second space can be connected to a side part of the frame part 44 which is formed to be thicker than the heat exchange part 42. Thus, bond strength can be improved compared to the case in which the piping is connected to the side part of the heat exchange part 42.SELECTED DRAWING: Figure 7

Description

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

In the configuration described in Patent Document 1, a heat storage material layer containing a heat storage material, a filter, a reaction medium diffusion layer, and a heat exchange unit are stacked inside the frame to form a stack of chemical heat storage reactors. A laminated unit in which a plurality of laminated bodies are laminated and integrated is accommodated in a container.
A pipe for supplying a heat medium from the outside to the heat exchanging unit is disposed on the side of the laminated unit, and the pipe is joined to a side surface of the heat exchanging unit via a branching pipe.

JP 2014-126293 A

  By the way, since the heat exchanging part is formed thinner than the frame part, it is difficult to connect the pipe to the side part of the frame part, and the joining area between the side part of the frame part and the pipe can be increased. However, it was difficult to improve the bonding strength between the frame portion and the pipe, that is, the bonding strength between the laminated unit and the pipe.

  The subject of this invention is aiming at the improvement of the joint strength of a lamination | stacking unit and piping in a chemical thermal storage reactor and a chemical thermal storage system.

  The chemical heat storage reactor according to claim 1, wherein the chemical heat storage reactor is combined with a reaction medium to generate heat or desorb the reaction medium to store heat, a frame part that houses the heat storage material inside, and a thinner part than the frame part. A flat plate heat exchanging unit that supplies heat to the heat storage material and recovers heat from the heat storage material by a heat medium that is formed and flows inside, and reaction medium diffusion that is arranged on one side of the heat storage material and through which the reaction medium flows A laminate unit in which a plurality of laminates including a layer, a filter disposed between the heat storage material and the reaction medium diffusion layer and formed with a plurality of holes are laminated, and the laminate unit inside The frame portion is disposed opposite to the first space, the first space communicating with the upstream side of the heat exchange portion, and the heat medium flowing therethrough. The second space communicated with the downstream side of the heat exchange unit Having.

  In the chemical heat storage reactor according to claim 1, the frame portion is provided with a first space communicating with the upstream side of the heat exchange unit so that the heat medium flows, and with the downstream side of the heat exchange unit so that the heat medium flows. The communicating second space is provided at a position facing the first space.

  For this reason, it is possible to connect a pipe to the side part of the frame part, and to flow a heat medium from the pipe to the first space of the frame part, the inside of the heat exchange part, and the second space of the frame part. Heat exchange can be performed between the heat storage material, the heat exchange unit, and the frame unit. In addition, it is possible to connect a pipe to the flat portion of the heat exchange part, and to flow a heat medium from the pipe to the inside of the heat exchange part, the first space of the frame part, and the second space of the frame part. Heat exchange can be performed between the heat storage material, the heat exchange unit, and the frame unit.

  Here, when the pipe for allowing the heat medium to enter and exit is joined to the side part of the frame part, the joining area can be increased compared to the case of joining the side part of the flat plate part thinner than the frame part. The bonding strength with the side portion can be higher than the bonding strength between the pipe and the side portion of the heat exchange portion.

  In addition, when the pipe is joined to the flat portion of the heat exchange part, the joint area between the pipe and the heat exchange part can be secured as compared with the case where the pipe is joined to the side part of the heat exchange part. The bonding strength between the exchange portion and the flat portion can be made higher than the bonding strength between the pipe and the side portion of the heat exchange portion.

  The invention according to claim 2 is the chemical heat storage reactor according to claim 1, wherein the heat storage material, the filter, and the reaction medium diffusion layer are laminated inside the frame portion, The heat exchange part is disposed and joined between the frame part and the other frame part, and the first space of the one and the other frame part and the upstream side of the heat exchange part are connected to each other. The second space of the one and the other frame part and the downstream side of the heat exchange part communicate with each other.

  In the chemical heat storage reactor according to claim 2, a heat exchange part is arranged and joined between one frame part and the other frame part, and the first space of one and the other frame part and Since the upstream side of the heat exchanging part communicates and the second space of one and the other frame part communicates with the downstream side of the heat exchanging part, the plurality of heat exchanging parts and the frame part are joined to each other. Since the inside of the plurality of heat exchange units and the inside of the plurality of frame units (the first space and the second space) communicate with each other, the pipe through which the heat medium flows is connected to any one of the frame units or the heat exchange unit. If it is connected, the heat medium can be made to go in and out of each frame part and the heat exchange part. For this reason, it is not necessary to connect piping for every frame part or for every heat exchange part, the number of parts of piping can be reduced, and a chemical heat storage reactor which is small in size and lightweight can be realized. In addition, by reducing the number of parts, the sensible heat loss can be reduced and the heat utilization efficiency can be improved. Furthermore, since all the heat exchanging parts and the frame part are joined to each other, compared to the case where the heat exchanging part and the frame part are simply in contact with each other, the contact thermal resistance that hinders the transfer of heat between members is reduced. It can be lost.

  According to a third aspect of the present invention, in the chemical heat storage reactor according to the second aspect, the heat exchanging portions are joined to both sides in the stacking direction of all the frame portions.

  In the chemical heat storage reactor according to claim 3, since the heat exchange parts are joined to both sides in the stacking direction of the frame part that houses the heat storage material, the heat storage material is disposed between the two heat exchange parts. Become. Therefore, the heat storage material can perform heat exchange at the heat exchange portions on both sides in the stacking direction, and heat exchange efficiency can be improved.

  The invention according to claim 4 is the chemical heat storage reactor according to claim 2 or claim 3, wherein the heat exchange part and the frame part are made of metal, and the heat exchange part and the frame part are , Brazing, or welding.

  In the chemical heat storage reactor according to claim 4, since the heat exchange part and the frame part are made of metal, and the heat exchange part and the frame part are joined by brazing or welding, strength and weight reduction are achieved. A laminated unit with improved heat exchange efficiency can be realized.

  The chemical heat storage system according to claim 5 is the chemical heat storage reactor according to any one of claims 1 to 4, the supply of the reaction medium to the reaction medium diffusion layer of the chemical heat storage reactor, and the reaction. An evaporative condenser for receiving the reaction medium from the medium diffusion layer.

  Since the chemical heat storage system of Claim 5 is equipped with the chemical heat storage reactor of any one of Claims 1-4, it becomes a chemical heat storage system with high joint strength of piping and a heat exchange part, High durability can be obtained.

  According to the chemical heat storage reactor and the chemical heat storage system of the present invention, it is possible to improve the bonding strength between the laminated unit and the pipe.

(A) and (B) are the block diagrams which showed the chemical thermal storage system which concerns on 1st Embodiment. It is the perspective view which showed the lamination | stacking unit with which the reactor which concerns on 1st Embodiment was equipped. It is a disassembled perspective view which shows a laminated body. (A) is the perspective view which showed the heat flow part, (B) is the disassembled perspective view which showed the heat flow part, (C) is the perspective view which showed the lower surface side of the frame part. (A) is the top view which showed the main-body part of the flat plate part, (B) is the 5 (B) -5 (B) sectional view taken on the plane part shown to FIG. 5 (A). (A) is the perspective view which showed the reaction medium diffusion layer, (B) is the 6 (B) -6 (B) sectional view taken on the line of the reaction medium diffusion layer shown to 6 (A). It is a longitudinal cross-sectional view which shows the lamination | stacking unit with which the reactor which concerns on 1st Embodiment was equipped. (A) is the disassembled perspective view which showed the heat fluid part which concerns on 2nd Embodiment, (B) is the top view which showed the main-body part of the flat plate part of the heat fluid part which concerns on 2nd Embodiment, ( (C) is the perspective view which showed the heat | fever fluid part which concerns on 2nd Embodiment. (A) is the disassembled perspective view which showed the heat fluid part which concerns on 3rd Embodiment, (B) is the top view which showed the main-body part of the flat plate part of the heat fluid part which concerns on 3rd Embodiment, ( (C) is the perspective view which showed the state which laminated | stacked the heat-fluid part which concerns on 3rd Embodiment. It is the perspective view which showed the lamination | stacking unit which concerns on 3rd Embodiment. (A)-(C) are perspective views which show the assembly procedure of the lamination | stacking unit which concerns on 3rd Embodiment. It is the disassembled perspective view which showed the heat flow part which concerns on 3rd Embodiment.

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

(overall structure)
As shown in FIGS. 1A and 1B, the chemical heat storage system 10 according to the present embodiment includes an evaporator that evaporates water and a condenser that condenses water vapor (an example of a reaction medium) W. The evaporative condenser 12, the reactor 20 as an example of a chemical heat storage reactor, and the communication path 14 that connects the evaporative condenser 12 and the reactor 20 are configured.

(Evaporation condenser)
The evaporative condenser 12 evaporates the stored water and supplies it to the reactor 20 (generates water vapor W), a condensing unit that condenses the water vapor W received from the reactor 20, and the water vapor W is condensed. Each function as a storage part for storing water is provided.

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

(Communication passage)
The communication path 14 includes an opening / closing valve 19 for switching between communication and non-communication between the evaporative condenser 12 (container 16) and the reactor 20 (reaction container 22 described later). The container 16, the reaction container 22, the communication path 14, and the on-off valve 19 are configured such that their connection portions are hermetically sealed, and these internal spaces are pre-evacuated in advance.

(Reactor)
The reactor 20 includes a reaction vessel 22, and a laminated unit 24 shown in FIG. 2 is accommodated in the reaction vessel 22.

(Reaction vessel)
As shown in FIG. 1, the reaction vessel 22 has a rectangular parallelepiped shape, and includes a box-shaped main body portion 22A whose upper side is opened and a lid member 22B. The inside of the reaction vessel 22 is a reaction medium flow section 26 through which water vapor (an example of a reaction medium) flows, and the inside is evacuated as described above.

(Overall structure of laminated unit)
As shown in FIG. 2, the laminated unit 24 includes a plurality of laminated bodies 51 (three in this embodiment) laminated in the vertical direction of the apparatus. In addition, rectangular sandwiching plates 98 are disposed on both sides of the stacking unit 24 in the stacking direction, and the stacking unit 24 is wound around a restraining member 58 that is a metal band so that each member is separated, It is restrained so that a gap is formed between the members and each member is not displaced.

  As shown in FIG. 3, the multilayer body 51 includes a heat fluid portion 50, a filter 34 that is laminated on the heat fluid portion 50 from above, and a reaction medium diffusion layer 36 that is laminated on the filter 34 from above. It consists of

  The filter 34, the reaction medium diffusion layer 36, and the heat flow unit 50 have the same rectangular shape (square in the present embodiment) when viewed from the vertical direction of the device, and are aligned in the vertical direction of the device in the present embodiment. They are laminated in a non-joined state (state that is not fixed by welding or the like) (so-called laminated structure).

(Heat flow part)
As shown in FIG. 4, the heat-fluid portion 50 is made of a metal heat exchange portion 42 formed in a metal flat plate shape, and is joined to the heat exchange portion 42 by brazing or welding so as to be integrated. The frame portion 44 is included.

  The heat exchanging portion 42 has a substantially box shape with an upper opening, a rectangular main body portion 52 as viewed from the vertical direction of the apparatus, and a lid member 54 that covers the opening portion of the main body portion 52 and seals the inside of the main body portion 52. It is comprised including. Note that the heat medium flows through the inside of the main body 52 closed by the lid member 54.

  As shown in FIGS. 5A and 5B, a plurality of radiating fins 62 are welded to the bottom of the main body 52 at intervals in the apparatus width direction (arrow W direction). The radiating fins 62 are substantially U-shaped with the upper side (the lid member side) opened.

  As shown in FIG. 4, the lid member 54 has a slit-like first opening 76 formed on one side in the apparatus depth direction (arrow D direction), and a slit-like second opening 78 on the other side. Is formed. In addition, the main-body part 52 and the cover member 54 are joined by brazing or welding.

  The frame 44 is formed with a first recess 45 extending in the apparatus width direction and opening downward on the lower surface on one side in the apparatus depth direction (arrow D direction). A second recess 46 that extends in the apparatus width direction and opens downward is formed on the lower surface of the other direction. The first recess 45 and the second recess 46 closed by the lid member 54 correspond to the first space and the second space of the present invention.

  The frame portion 44 has a first communication port 47 communicating with the first recess 45 on one side surface in the apparatus depth direction, and a second communication communicating with the second recess 46 on the other side surface in the apparatus depth direction. A mouth 48 is formed. The frame portion 44 is joined to the upper surface of the lid member 54 by brazing or welding with the first concave portion 45 and the second concave portion 46 facing downward.

  The frame part 44 is formed thicker than the heat exchange part 42, and the thickness dimension t1 of the frame part 44 is larger than the thickness dimension t2 of the heat exchange part 42. Further, the side portion of the frame portion 44 is formed to have higher rigidity than the side portion of the lid member 54.

  As shown in FIGS. 2 and 7, a first square pipe 64 extending in the vertical direction is disposed on one side of the stacking unit 24 in the apparatus depth direction, and the other side of the stacking unit 24 in the apparatus depth direction. A second square pipe 66 extending in the up-down direction is disposed on the side portion.

  The 1st square pipe 64 and the 2nd square pipe 66 are joined to the side part of the frame part 44 by brazing or welding. The first square pipe 64 has a first hole 64 </ b> A that communicates with the first communication port 47 of the frame portion 44, and the second square pipe 66 has a second hole that communicates with the second communication port 48 of the frame portion 44. A hole 66A is formed.

  The lower end of the first square pipe 64 and the lower end of the second square pipe 66 are closed, the upper end of the first square pipe 64 is connected to the pipe 70A, and the upper end of the second square pipe 66 is connected to the pipe 70B. ing.

  Thereby, when the heat fluidizing part 50 of this embodiment supplies a heat medium from the heat source 104 (or heat utilization object 106), for example, as shown by the arrow A in FIG. 64, the first hole 64A, the first communication port 47, the first recess 45, the first opening 76, the inside of the main body 52, the second opening 78, the second recess 46, the second communication port 48, the first It flows through the two holes 66A and the second square pipe 66 and is returned to the heat source 104 (the heat utilization object 106). In the heat fluidizing section 50, the heat exchanging section 42 through which the heat medium flows functions as a heat exchanger, and the frame section 44 through which the heat medium flows also functions as a heat exchanger.

(Configuration of heat storage material layer of heat storage material reaction part)
As shown in FIGS. 3 and 4, the heat storage molded body 40 is disposed inside the frame portion 44. As an example of the heat storage molded body 40, a molded body of calcium oxide (CaO: an example of a heat storage material) which is one of oxides of alkaline earth metals is used. This molded body is formed into a substantially rectangular block shape by, for example, kneading calcium oxide powder with a binder (for example, clay mineral) and firing.

  Here, the heat storage molded body 40 expands with hydration and dissipates heat (heat generation), and stores heat (heat absorption) with dehydration, and can reversibly repeat heat dissipation and heat storage by the following reaction. It is configured.

CaO + H2O Ｃａ Ca (OH) 2
When the heat storage amount and the heat generation amount Q are shown together in this equation,
CaO + H2O → Ca (OH) 2 + Q
Ca (OH) 2 + Q → CaO + H2O
It becomes.

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

  In this embodiment, the particle size of the heat storage material constituting the heat storage molded body 40 is the average particle size when the heat storage material is powder, and the average particle size of the powder before granulation when granular. To do. This is because it is estimated that when the grains collapse, it returns to the state of the previous process.

(Heat storage material reaction part, filter)
The filter 34 is sandwiched between the heat-fluid portion 50 and the reaction medium diffusion layer 36, and as an example, an etching made of a metal material in which a large number of through holes (not shown) of φ200 [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. Thus, the filter 34 allows water vapor to pass through the flow path smaller than the average particle diameter of the heat storage material constituting the heat storage molded body 40, while restricting passage of the heat storage material larger than the average particle diameter. It has become.

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

(Reaction medium diffusion layer of heat storage material reaction part)
As shown in FIG. 6A, 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. Yes. The flow path members 38 extend in the apparatus width direction in which water vapor flows and are arranged at intervals in the apparatus depth direction (see FIG. 6B).

  As shown in FIG. 6B, each flow path member 38 is disposed on the lower side with respect to the top plate 37, and the filter 34 (see FIG. 3) side is opened as viewed from the device width direction (arrow W direction). It is made 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 or water vapor discharged from the heat storage molded body 40 flows along the apparatus width direction between the flow path member 38 and between the adjacent flow path members 38. It has become.

(Other parts)
As shown in FIG. 1, a switching member 108 that switches between a heat source 104 and a heat utilization target object 106 is provided outside the reaction vessel 22 as a communication destination of the heat flow unit 50. The switching member 108, the first square pipe 64, and the second square pipe 66 are connected via pipes 70A and 70B.

  Thereby, the heat medium from the heat source 104 is caused to flow into the heat fluid portion 50 via the switching member 108, the pipe 70A, and the first square pipe 64, and the heat medium after passing through the heat fluid portion 50 is The heat can be returned to the heat source 104 through the second square pipe 66 and the pipe 70B.

  Further, by switching the switching member 108, the heat medium from the heat utilization target object 106 is caused to flow into the heat fluid portion 50 via the switching member 108, the pipe 70 </ b> A, and the first square pipe 64, and the heat fluid portion 50. The heat medium after passing through can be returned to the heat utilization object 106 through the second square pipe 66 and the pipe 70B.

(Operation and effect of chemical heat storage system)
Next, the operation 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 (dissipated) from the heat storage molded body 40, as shown in FIG. The communication destination is switched to the heat utilization target object 106. Further, the on-off valve 19 is opened, and in this state, an intermediate temperature medium is caused to flow through the heat medium flow path 17 of the evaporation condenser 12 to evaporate the water in the liquid phase part 16B. The generated water vapor W moves in the direction of the arrow D in the communication path 14 and is supplied into the reaction vessel 22.

  Subsequently, in the reaction vessel 22, the supplied water vapor W flows through the reaction medium flow portion 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, the heat storage molded body 40 generates heat (heat radiation) while causing a hydration reaction. This heat is transported to the heat utilization object 106 by the heat medium flowing inside the heat fluidizing part 50.

  As shown by the arrow A in FIG. 7, the heat medium flows through the inside of the frame portion 44 and the heat exchanging portion 42, so that heat can be received from the lower surface and the side surface of the heat storage molded body 40, and 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 in the chemical heat storage system 10, as shown in FIG. 1A, the communication member of each passage of the pipes 70 </ b> A, 70 </ b> B is switched to the heat source 104 by the switching member 108. . 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.

  Even in this case, as shown by the arrow A in FIG. 7, the heat medium flows inside the frame portion 44 and the heat exchanging portion 42 inside the heat fluidizing portion 50, so that the bottom surface of the heat storage molded body 40 and Heat can be transmitted to the side surface, and the heat of the heat medium can be efficiently transmitted 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 heat fluidizing portion 50, and this heat is stored in the heat storage molded body 40. 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 portion 26, flows through the communication path 14 in the direction of arrow E, and flows into the evaporative condenser 12 as shown in FIG. Then, in the vapor phase portion 16 </ b> A 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 16 </ b> B of the container 16.

  In the laminated unit 24 of the present embodiment, the first square pipe 64 and the second square pipe 66 that allow the heat medium to enter and exit the heat fluidizing part 50 are formed thicker than the heat exchanging part 42, and The first square pipe 64 and the second square pipe 66 are joined to the side part of the frame part 44 having a rigidity higher than that of the side part, and compared with the contact area with the side part of the heat exchange part 42. Since the contact area with the side portion of the frame portion 44 is increased, the joining area between the first square pipe 64 and the second square pipe 66 and the side portion of the frame portion 44 can be increased. The joining strength between the square pipe 64 and the second square pipe 66 and the side portion of the frame portion 44 is the joining strength when the first square pipe 64 and the second square pipe 66 are joined to the side portion of the heat exchanging portion 42. Can be higher than.

  In addition, since the first square pipe 64 and the second square pipe 66 are joined to the side part of the frame part 44 having higher rigidity than the side part of the heat exchange part 42, the first square pipe 64 and the second square pipe 66 are joined. The deformation of the heat fluid portion 50 around the joint portion between the heat fluid portion 50 and the heat fluid portion 50 is suppressed, and the formation of a gap between the heat fluid portion 50 and the other member due to the deformation of the heat fluid portion 50 is suppressed, Leakage of the heat storage material can be suppressed.

  Further, in the laminated unit 24 of the present embodiment, the first square pipe 64 and the second square pipe 66 are directly joined to the side part of the frame part 44 of the heat fluid part 50 by welding. Compared to the case where the single square pipe 64 and the second square pipe 66 and the heat flow portion 50 are connected by a branch pipe, the number of work steps is reduced, the number of parts is reduced, and the number of parts is reduced. The weight is reduced. Furthermore, since the size of the laminated unit 24 assembled with the first square pipe 64 and the second square pipe 66 can be reduced by reducing the number of parts, the reaction vessel 22 can be reduced in size. Therefore, by reducing the reaction vessel 22 and reducing the internal volume of the reaction vessel 22, the heat storage density, which is the heat storage amount of the heat storage material occupying the internal volume of the reaction vessel 22, can be increased. Further, the cost can be reduced by reducing the number of parts.

  Further, by reducing the number of parts of the laminated unit 24, the sensible heat loss can be reduced and the heat utilization efficiency can be improved. Thereby, the reaction time in which the heat storage material and the reaction medium react can be shortened, and the high-performance reactor 20 can be realized.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a different part from 1st Embodiment is mainly demonstrated.

  The reactor 20 of the present embodiment is a modification of the stack unit 24 of the first embodiment, and the configuration of the heat flow unit 50 of the uppermost stacked body 51 is different. As shown in FIG. 8, a heat exchanging portion 42 that is a heat exchanger is laminated and joined to the upper side of the uppermost heat fluidizing portion 50.

  As for the frame part 44 of the uppermost heat-fluid part 50, the 1st recessed part 45 and the 2nd recessed part 46 are opened to the up-down direction. The frame portion 44 of the uppermost heat flow portion 50 includes a frame side 44A where the first recess 45 and the second recess 46 are formed, and a frame side where the first recess 45 and the second recess 46 are not formed. 44B. The frame side 44B is formed thinner than the frame side 44A.

  Inside the frame portion 44, a heat storage molded body 40 having the same thickness as that of the thin frame side 44B is disposed, and between the heat storage molded body 40 and the upper heat exchanging portion 42 and between the frame side 44B and the upper side heat. A space (gap) is formed between the exchange unit 42, and in this embodiment, the filter 34 and the reaction medium diffusion layer 36 are disposed in this space.

In addition, the main body 52 of the uppermost heat exchanging section 42 is formed with an opening 52 </ b> A that communicates with the first recess 45 and the second recess 46.
Since the reactor 20 of the present embodiment includes the uppermost layered body 51 as described above, the heat medium can also flow through the uppermost heat exchanging unit 42.

  Thus, in the uppermost laminate 51 of the reactor 20 of the present embodiment, the heat exchange part 42 as the heat exchange part is also arranged on the upper side of the heat storage molded body 40, and the heat accumulation molded body 40 is laminated in the stacking direction. Since the heat exchange parts 42 are arranged on both sides, the heat storage molded body 40 exchanges heat with the heat exchange parts 42 on both sides, so the heat exchange part 42 is arranged on the upper side of the heat storage molded body 40. Compared with the case where it is not, heat exchange efficiency can be improved.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. In addition, about the same member as embodiment mentioned above, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a different part from embodiment mentioned above is mainly demonstrated.

  As shown in FIGS. 9 and 10, in the laminated unit 24 of the present embodiment, a plurality of heat-fluid portions are formed by vertically laminating the same configuration as the uppermost laminated body 51 of the second embodiment. 50 are joined to each other by brazing or welding.

  In addition, circular openings 52A are formed in the main body portion 52 of each heat flow portion 50 on both sides in the apparatus depth direction. The lower side of the frame side 44A of the frame portion 44 of the present embodiment is open, and a through hole 68 is formed in the upper portion. Moreover, the through-hole 79 is formed in the cover member 54 of the heat exchange part 42 of this embodiment on both sides of the apparatus depth direction.

  In the laminated unit 24 of the present embodiment, the first square pipe 64 and the second square pipe 66 used in the laminated unit 24 of the above-described embodiment are omitted, and the lid member of the uppermost heat exchange unit 42 is omitted. A pipe 70 </ b> A and a pipe 70 </ b> B are joined to the upper surface of the lid member 54 by brazing or welding so as to communicate with the through hole 79 formed in 54.

  As shown in FIG. 10, in the laminated unit 24 of the present embodiment, as indicated by an arrow A, a heat medium flows inside the heat exchanging portion 42 and the frame side 44 </ b> A, and heat exchange is performed with the heat storage molded body 40. Is done.

  In the laminated unit 24 of the present embodiment, the first square pipe 64 and the second square pipe 66 are omitted to reduce the number of parts, and the amount of the reduced number of parts is reduced. Furthermore, since the size of the laminated unit 24 can be further reduced by reducing the number of parts, the reaction vessel 22 can be further reduced in size (the width can be reduced). Therefore, the heat storage density can be further increased by downsizing the reaction vessel 22 and reducing the internal volume of the reaction vessel 22. Further, the cost can be reduced by reducing the number of parts.

  Further, by reducing the number of parts of the laminated unit 24, the sensible heat loss can be reduced and the heat utilization efficiency can be improved. Thereby, the reaction time in which a heat storage material and a reaction medium react can be shortened, and the further high-performance reactor 20 can be realized.

  In the laminated unit 24 of the present embodiment, the pipe 70 </ b> A and the pipe 70 </ b> B are not joined to the side part of the heat exchanging part 42 formed thinner than the frame part 44, but on the flat part of the lid member 54 of the heat exchanging part 42. Since it joins, the joining area of piping 70A and piping 70B and the heat exchange part 42 can be ensured, and the joint strength of piping 70A and piping 70B and the heat exchange part 42 can be raised. Note that the stacked unit 24 shown in FIG. 10 is schematically described for easy understanding of the configuration, and the actual thickness of the heat exchanging portion 42 is, for example, about 2 mm. It is difficult to ensure a large joining area when piping or the like is joined to the side of the exchange part 42.

  However, since it is possible to take a large joining area in the flat portion of the lid member 54 as compared with the side portion of the heat exchanging portion 42, the outer peripheral portions of the pipe 70 </ b> A and the pipe 70 </ b> B are connected to the flat portion of the lid member 54. The joint area can be secured by brazing or welding. Further, as shown in FIG. 10B, a flange 70Af (70Bf) extending outward in the radial direction is formed at the end of the pipe 70A (and the pipe 70B), thereby joining the lid member 54. It is possible to further increase the bonding strength.

In addition, according to FIG. 11, the assembly procedure of the lamination | stacking unit 24 of this embodiment is demonstrated easily.
First, as shown in FIGS. 11 (A) and 11 (B), the heat-fluidized portion 50 not assembled with the frame side 44B on one side is laminated, and the frame portion is opened from the side opening as shown in FIG. 11 (A). The divided heat storage molded body 40 is inserted into 44, and then, as shown in FIG. 11C, the filter 34 and the reaction medium diffusion layer 36 are inserted over the heat storage molded body 40 from the opening.
Finally, the frame side 44B is inserted into the opening, and the frame side 44B is joined to the heat exchange part 42 and the frame side 44A.

  In the lamination unit 24 of this embodiment, since each heat fluid part 50 is mutually joined by brazing or welding, compared with the case where the heat fluid part 50 is merely laminated | stacked, the shift | offset | difference of heat fluid parts 50 is mutually. Is not generated, and the occurrence of a gap between the heat fluidized portion 50 and the heat fluidized portion 50 is also suppressed, so that leakage of the heat storage material can be suppressed.

  Moreover, in the lamination | stacking unit 24 of this embodiment, the thermal storage molded object 40 can be pinched and restrained with the heat exchange part 42 from the both sides of the lamination direction with the filter 34 and the reaction medium diffusion layer 36, and the thermal storage molded object 40 The deformation due to the expansion force can be suppressed.

  Furthermore, in the laminated unit 24 of the present embodiment, the heat storage molded body is formed in the space portion between the heat exchanging portion 42 and the heat exchanging portion 42 by previously joining and integrating the plurality of heat flowing portions 50. 40, the filter 34, and the reaction medium diffusion layer 36 can be easily inserted, the assembly efficiency of the heat storage molded body 40, the filter 34, and the reaction medium diffusion layer 36 can be improved, and man-hours can be reduced. Reduction.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG. In addition, about the same member as embodiment mentioned above, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a different part from embodiment mentioned above is mainly demonstrated.

  FIG. 12 shows a modified example of the frame portion 44 of the heat flow portion 50. The frame portion 44 is configured by a frame side 44A, a frame side 44B, and four L-shaped frame sides 44C. . Thus, the frame part 44 may be composed of a plurality of members. The frame portion 44 has a hollow structure with two frame sides 44C and 44A on one side in the apparatus depth direction (arrow D direction), and two frame sides on the other side in the apparatus depth direction (arrow D direction). 44C and the frame side 44A have a hollow structure. The insides of the two frame sides 44C and 44A on one side communicate with the heat exchange part 42 through a hole (not shown), and the insides of the two frame sides 44C and 44A on the other side are It communicates with the heat exchanging section 42 through another hole (not shown). Moreover, all the heat exchange parts 42 and the frame part 44 are connected by the hole which is not shown in figure. In the uppermost frame 44, a hole 60A communicating with the pipe 70A is formed at one corner, and a hole 60B communicating with the pipe 70B is formed at a corner in a diagonal direction with respect to the hole 60A. Thereby, the heat medium introduced from the pipe 70 </ b> A can be discharged from the pipe 70 </ b> B after passing through each heat flow portion 50.

[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. This will be apparent to those skilled in the art.

20 reactor (an example of a chemical heat storage reactor)
22 reaction vessel (container)
24 Laminated unit 34 Filter 36 Reaction medium diffusion layer 40 Heat storage material molded body (heat storage material)
42 heat exchange part 44 frame part 45 1st recessed part (1st space)
46 Second recess (second space)
51 Laminate W Water Vapor (Reaction Medium)

Claims (5)

The heat storage material that generates heat or accumulates heat when the reaction medium is desorbed by being combined with the reaction medium, the frame portion that houses the heat storage material inside, and the heat storage material that is formed thinner than the frame portion and flows into the heat storage material A flat plate heat exchanging section that performs heat supply and heat recovery from the heat storage material, a reaction medium diffusion layer that is disposed on one side of the heat storage material and through which a reaction medium flows, the heat storage material, and the reaction medium diffusion layer A multi-layered unit in which a plurality of laminated bodies including a filter disposed between and a plurality of holes are formed, and
A container for accommodating the laminated unit therein,
The frame portion is arranged to face the first space through which the heat medium flows and communicates with the upstream side of the heat exchanging portion, and the heat medium flows through the first space and the downstream side of the heat exchanging portion. A chemical heat storage reactor having a second space in communication. Inside the frame portion, the heat storage material, the filter, and the reaction medium diffusion layer are laminated,
Between the one frame part and the other frame part, the heat exchange part is arranged and joined,
On the other hand, the first space of the other frame part communicates with the upstream side of the heat exchange part,
2. The chemical heat storage reactor according to claim 1, wherein the second space of the one and the other frame portion communicates with the downstream side of the heat exchange portion.   The chemical heat storage reactor according to claim 2, wherein the heat exchange parts are joined to both sides of all the frame parts in the stacking direction.   The chemical heat storage reactor according to claim 2, wherein the heat exchange part and the frame part are made of metal, and the heat exchange part and the frame part are joined by brazing or welding. The chemical heat storage reactor according to any one of claims 1 to 4,
The frame part, or a pipe that is joined to the flat part of the heat exchange part, and flows the heat medium into the frame part and the heat exchange part,
An evaporative condenser for supplying the reaction medium to the reaction medium diffusion layer of the chemical heat storage reactor and receiving the reaction medium from the reaction medium diffusion layer;
Having a chemical heat storage system.