JP2014153029A - Regeneration structure of heat accumulator and chemical heat storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a regeneration structure of a heat accumulator capable of utilizing a low temperature heat source when regenerating the heat accumulator, and provide a chemical heat storage system.SOLUTION: A heat accumulator 20 and an adsorber 40 in a desorption state are connected to each other via a connection passage 14. The adsorber 40 adsorbs steam discharged from the heat accumulator 20, and thus the pressure in a steam flow passage chamber 46 of a steam flow passage chamber 26 of the heat accumulator 20 is reduced relative to the ambient pressure. This lowers a regeneration temperature (desorption equilibrium temperature) of the heat accumulator 20, allowing utilization of a low temperature heat source.

Description

  The present invention relates to a regeneration structure for a heat storage device that stores heat by a chemical reaction, and a chemical heat storage system.

  The chemical heat storage reaction container (heat accumulator) described in Patent Document 1 includes a steam channel serving as a steam channel, and a pair of heat storage material molded bodies disposed on both sides of the steam channel.

JP 2012-217713 A

  However, in the conventional configuration, the regeneration temperature when the chemical heat storage reaction vessel is regenerated depends on the vapor pressure on the discharge side for releasing water vapor from the vapor flow path. For this reason, in the conventional configuration, the regeneration temperature when the regenerator is regenerated is high, and the low temperature heat source cannot be used when regenerating the regenerator.

  An object of the present invention is to make it possible to use a low-temperature heat source when regenerating a regenerator.

  The regeneration structure of the regenerator according to claim 1 of the present invention connects the regenerator and the adsorber when regenerating the adsorber that adsorbs a reaction medium and the regenerator that stores heat by a chemical reaction, And a connection path through which a reaction medium discharged from the heat accumulator and adsorbed by the adsorber flows.

  According to the above configuration, when the heat accumulator that stores heat by the chemical reaction is regenerated, the reaction medium discharged from the heat accumulator flows through the connection path to the adsorber and is adsorbed by the adsorber. Further, the adsorber adsorbs the reaction medium, so that the inside of the connection path and the inside of the heat accumulator are depressurized with respect to the atmospheric pressure.

  Thus, by reducing the pressure inside the heat accumulator with respect to the atmospheric pressure, the regeneration temperature of the heat accumulator (reaction equilibrium temperature of the reaction medium) becomes lower than when the inside of the heat accumulator is at atmospheric pressure. In other words, when regenerating the regenerator, a low-temperature heat source can be used as compared with the case where the inside of the regenerator is not depressurized with respect to the atmospheric pressure.

  The regenerator structure according to claim 2 of the present invention is the regenerator structure according to claim 1, wherein a plurality of the adsorbers are provided, and one adsorber and the heat accumulator are connected to each other. A switching member that switches between a state connected by a path and a state where the other adsorber and the heat accumulator are connected by the connection path is provided.

  According to the above configuration, the adsorber that is not connected to the heat accumulator by the connecting path is regenerated. Thereby, the reaction medium discharged from the heat accumulator can be adsorbed using the regenerated adsorber.

  The regenerator structure according to claim 3 of the present invention is the regenerator structure according to claim 2, wherein the adsorber that is not connected to the heat accumulator by the connection path is regenerated. To do.

  According to the above configuration, the switching member switches between a state where one adsorber and the heat accumulator are connected by the connecting path and a state where the other adsorber and the heat accumulator are connected by the connecting path. Thereby, a large-capacity heat accumulator can be regenerated using a plurality of small-capacity adsorbers.

  The regeneration structure for a heat accumulator according to claim 4 of the present invention is the regeneration structure for a heat accumulator according to claim 3, wherein the adsorber adsorbed by the reaction medium discharged from the heat accumulator is regenerated. The heat exchange medium used to regenerate the heat accumulator is supplied.

  According to the above configuration, when the regenerator is regenerated, the heat exchange medium used to regenerate the regenerator is supplied to the adsorber that adsorbs the reaction medium discharged from the regenerator.

  Thus, the adsorber can be regenerated by effectively using the heat of the heat exchange medium used to regenerate the heat accumulator.

  According to a fifth aspect of the present invention, there is provided a chemical heat storage system according to the fourth aspect of the present invention, and the heat that is supplied from the heat accumulator to the adsorber and discharged from the adsorber in the regeneration structure of the heat accumulator. And a supply device for supplying a reaction medium to the regenerated heat accumulator while being supplied with an exchange medium.

  According to the above configuration, the heat exchange medium supplied from the heat accumulator to the adsorber and discharged from the adsorber is supplied to the supply device. Then, the supply device supplies the reaction medium to the regenerated heat storage device.

  Thus, the heat of the heat exchange medium supplied from the heat accumulator to the adsorber and discharged from the adsorber can be used effectively.

  The chemical heat storage system according to claim 6 of the present invention is the chemical heat storage system according to claim 5, wherein the adsorber adsorbed by the reaction medium discharged from the heat storage is regenerated from the adsorber. A medium processor for condensing the reaction medium to be discharged, and supplying the reaction medium discharged from the adsorber supplied with a heat exchange medium in the regeneration structure of the heat accumulator to the medium processor; The heat generated by condensing the reaction medium is supplied to the feeder.

  According to the above configuration, the reaction medium discharged from the adsorber supplied with the heat exchange medium is supplied to the medium processing device. Furthermore, heat (condensation latent heat) generated by condensing and processing the reaction medium in the medium processor is supplied to the feeder.

  Thus, the heat generated by condensing and processing the reaction medium in the medium processor can be used effectively.

  According to the present invention, low temperature exhaust heat can be used when regenerating the heat accumulator.

It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 1st Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 1st Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 1st Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 1st Embodiment. (A) (B) It is sectional drawing which showed the thermal accumulator used for the reproduction | regeneration structure which concerns on 1st Embodiment. (A) (B) It is sectional drawing which showed the adsorption machine used for the reproduction | regeneration structure which concerns on 1st Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 2nd Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 2nd Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 2nd Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 3rd Embodiment. It is the block diagram which showed the chemical thermal storage system provided with the reproduction | regeneration structure which concerns on 3rd Embodiment. It is the perspective view which showed the heat storage unit used for the reproduction | regeneration structure which concerns on 4th Embodiment. It is the disassembled perspective view which showed the heat storage unit used for the reproduction | regeneration structure which concerns on 4th Embodiment. It is the disassembled perspective view which showed the heat storage unit used for the reproduction | regeneration structure which concerns on 4th Embodiment. (A) (B) It is the perspective view which showed the end plate of the thermal accumulator used for the reproduction | regeneration structure which concerns on 4th Embodiment, a heat | fever fluidization part, a thermal storage material reaction part, etc. FIG. It is the disassembled perspective view which showed the inside of the reaction container of the heat storage unit used for the reproduction | regeneration structure which concerns on 4th Embodiment. It is the top view which showed the heat | fever fluidization part of the thermal accumulator used for the reproduction | regeneration structure which concerns on 4th Embodiment. (A) (B) The exploded perspective view which showed the reaction medium diffusion layer used for the heat storage material reaction part of the heat storage device used for the reproduction | regeneration structure which concerns on 4th Embodiment, and the member which comprises the reaction medium diffusion layer were shown. It is a perspective view. (A) (B) It is the perspective view and top view which showed the reaction medium diffusion layer used for the thermal storage material reaction part of the thermal storage device used for the reproduction | regeneration structure which concerns on 4th Embodiment. (A) (B) It is the disassembled perspective view and perspective view which showed the thermal storage material layer used for the thermal storage material reaction part of the thermal storage device used for the reproduction | regeneration structure which concerns on 4th Embodiment.

<First Embodiment>
An example of a regenerator regeneration structure and a chemical heat storage system according to the first embodiment of the present invention will be described with reference to FIGS. In addition, about the heat storage device 20, the adsorption device 40, the condenser 60, and the evaporator 70 which are shown to each figure, in order to understand the structure of each member easily, it describes by the equivalent magnitude | size. For this reason, in each figure, the ratio of the magnitude | size between each member is not considered.

  In addition, the chemical heat storage system 10 is a system that recovers waste heat from a factory, a vehicle, etc., stores it chemically in the heat accumulator 20, and supplies (dissipates heat) the heat stored in the heat accumulator 20 to a heating target. It is said that. The recovery of waste heat is performed by heat exchange between the waste heat transport medium (heat exchange medium) and the heat storage material molded bodies 30 </ b> A and 30 </ b> B constituting the heat storage unit 20. Moreover, the heat radiated from the heat accumulator 20 is transported to a heating target by a heat transport medium (heat exchange medium). The heat storage 20 may be radiated at a location where the heat is stored, or may be moved from the location where the heat is stored.

(overall structure)
As shown in FIG. 1, the chemical heat storage system 10 according to the first embodiment includes an evaporator 70 as an example of a supply device in which water (H ₂ O) is evaporated, and water vapor (an example of a reaction medium). A condenser 60 as an example of a medium processing device in which condensation is performed, a heat storage device 20 that is a chemical heat storage reactor in which a hydration reaction or separation reaction of the heat storage material molded bodies 30A and 30B is performed, an adsorbent molded body 44A, And an adsorber 40 that is a physical adsorption reactor in which 44B is adsorbed or desorbed.

〔Evaporator〕
The evaporator 70 is connected to a water tank 72 that can store water by a connection path 74. A pump (not shown) is provided at an intermediate portion of the connecting pipe 74. The evaporator 70 evaporates the water stored in the water tank 72 to generate water vapor, and supplies the generated water vapor to the heat accumulator 20 via a communication path 56 described later.

  Specifically, the evaporator 70 is formed with an evaporation chamber 76 that generates water vapor to be supplied to the regenerator 20. Further, the evaporation chamber 76 is formed with a supply port 76A through which water stored in the water tank 72 is supplied via a connection path 74, and a discharge port 76B for discharging internal water vapor. .

  Further, the evaporator 70 is formed with a pair of heat medium channels 77 and 78 with the evaporation chamber 76 interposed therebetween, and the heat medium channels 77 and 78 have inlets 77A and 78A into which the heat medium flows, Outflow ports 77B and 78B from which the heat medium flows out are formed.

  Then, by causing a heat medium (heat exchange medium) to flow in from the inlets 77 </ b> A and 78 </ b> A of the heat medium channels 77 and 78, water vapor is generated from water in the evaporation chamber 76.

〔Condenser〕
The condenser 60 condenses the water vapor discharged from the adsorber 40 to generate water.

  Specifically, the condenser 60 is formed with a condensing chamber 64 for condensing water vapor discharged from the adsorber 40. Further, the condensation chamber 64 is provided with a supply port 64 </ b> A to which water vapor discharged from the adsorber 40 is supplied via a connection path 62 that connects the adsorber 40 and the condenser 60, and water vapor is condensed. A discharge port 64B for discharging the generated water is formed.

  Further, the discharge port 64B and the water tank 72 described above are connected by a connection path 66, and the water discharged from the discharge port 64B flows through the connection path 66 and is stored in the water tank 72. Yes.

  In addition, the condenser 60 is formed with a pair of refrigerant flow paths 67 and 68 with the condensation chamber 64 interposed therebetween. In the refrigerant flow paths 67 and 68, the inlets 67A and 68A into which the heat medium flows, and the heat medium are formed. Outflow ports 67B and 68B that flow out are formed. Then, water is generated from water vapor in the condensing chamber 64 by allowing a heat medium to flow in from the inlets 67A and 68A of the refrigerant flow paths 67 and 68.

[Regenerator]
As shown in FIGS. 5A and 5B, the heat accumulator 20 includes a reaction vessel 22. Further, the reaction vessel 22 is formed with a pair of wall portions 22A that constitute the outer wall of the reaction vessel 22 and face each other. And in reaction container 22, a pair of heat storage material molded object 30A, 30B arrange | positioned at the wall part 22A side, and filter 28A, 28B which covers heat storage material molded object 30A, 30B are arrange | positioned. A steam channel chamber 26 is formed so as to be sandwiched between the heat storage material molded bodies 30A and 30B via the filters 28A and 28B.

  Further, the steam channel chamber 26 is formed by bending a plate material, and divides the steam channel chamber 26 into a plurality when viewed from the flow direction of water vapor (hereinafter referred to as “X direction”), and also hydration reaction The fin 32 on which the expansion force of the heat storage material molded bodies 30 </ b> A and 30 </ b> B is generated is disposed. Further, a pair of heat medium passages 24 and 25 are provided outside the pair of wall portions 22A so as to be adjacent to the reaction vessel 22 on the side of the heat storage material molded bodies 30A and 30B.

  Thus, the heat accumulator 20 includes the reaction vessel 22, the heat storage material molded bodies 30A and 30B, the filters 28A and 28B, the fins 32, and the heat medium flow paths 24 and 25.

  In the following description, the direction in which the steam channel chamber 26 and the heat storage material molded bodies 30A and 30B are arranged in the reaction vessel 22 will be referred to as the Y direction (arrangement direction), and orthogonal to the X direction and the Y direction. The direction to do is described as the Z direction (channel width direction).

  Here, the left-right direction in FIGS. 5A and 5B is the Y direction, and in the reaction vessel 22, the heat storage material molded body 30 </ b> B, the filter 28 </ b> B, and the steam channel chamber 26 from the right side to the left side. The filter 28A and the heat storage material molded body 30A are arranged in this order.

[Reaction vessel]
The reaction container 22 is a rectangular parallelepiped container, and as shown in FIG. 5A, an opening 23 and a steam channel chamber 26 are formed in the center portion in the Y direction of the ceiling wall portion 22C of the reaction container 22. It is formed so as to face each other. The opening 23 is attached with an end of a connection path 14 to be described later.

[Steam channel chamber / fin]
As described above, the steam channel chamber 26 is sandwiched between the heat storage material molded bodies 30A and 30B. The steam channel chamber 26 has a steam channel as viewed from the X direction as shown in FIG. Fins 32 that divide the chamber 26 into a plurality of flow path chambers are disposed. The fin 32 is formed by pressing a stainless steel plate, and has a rectangular wave shape in which a cross section orthogonal to the X direction repeats unevenness.

[filter]
As shown in FIGS. 5A and 5B, the filters 28A and 28B cover the outer surfaces of the heat storage material molded bodies 30A and 30B other than the portion facing the wall portion 22A in the heat storage material molded bodies 30A and 30B. ing. The filters 28A and 28B are metal fiber sintered bodies, which are sintered non-woven fabrics composed of metal fibers having an outer diameter of a micron unit, and the heat storage material forming the heat storage material molded bodies 30A and 30B. The filtration accuracy is smaller than the average particle size of the material. Thereby, in the filters 28A and 28B, while water vapor passes, a heat storage material larger than the average particle diameter is not allowed to pass.

  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.

[Heat storage material molded body]
As an example, a molded body of calcium oxide (CaO: an example of a thermal storage material), which is one of alkaline earth metal oxides, is used for the thermal storage material molded bodies 30A and 30B. 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 material molded bodies 30 </ b> A and 30 </ b> B react with water vapor (with hydration) to dissipate heat (heat generation), and heat release (with dehydration) causes heat storage (heat absorption) to regenerate. In the heat accumulator 20, heat dissipation and heat storage can be reversibly repeated by the reactions shown below.

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

  As an example, the heat storage capacity per kg of the heat storage material molded bodies 30A and 30B is 1.86 [MJ / kg].

  In this embodiment, the particle size of the heat storage material constituting the heat storage material molded bodies 30A and 30B is the average particle size when the heat storage material is powder, and the average particle size before granulation when the heat storage material is granular. The particle size. This is because it is estimated that when the grains collapse, it returns to the state of the previous process.

[Heat medium flow path]
As shown in FIGS. 5A and 5B, the heat medium flow path 24 is disposed adjacent to the reaction vessel 22 on the heat storage material molded body 30A side, and the heat medium flow path 25 is formed of the heat storage material molded body. It is arranged adjacent to the reaction vessel 22 on the 30B side.

  As an example, the heat medium passages 24 and 25 are made of rectangular cylindrical stainless steel, one of which is opened. The inflow ports 24A and 25A into which the heat medium flows and the outflow ports 24B through which the heat medium flows out, 25B. The inflow of the heat medium from the inflow ports 24A, 25A into the heat medium flow paths 24, 25 is indicated by an arrow A, and the outflow of the heat medium from the heat medium flow paths 24, 25 to the outflow ports 24B, 25B. Is indicated by an arrow B. Arrows A and B are both along the X direction.

  The heat medium is a medium for heating the heat storage material molded bodies 30A and 30B at the time of heat storage (dehydration) and transporting heat from the heat storage material molded bodies 30A and 30B to the object to be heated at the time of heat dissipation (hydration).

[Adsorber]
The adsorber 40 (adsorbent molded bodies 44A, 44B) is adapted to adsorb water vapor discharged from the heat accumulator 20. The adsorption temperature (regeneration temperature) of the adsorber 40 is set lower than the temperature of the water vapor discharged from the heat accumulator 20.

  The adsorber 40 includes a reaction vessel 42 as shown in FIGS. 6 (A) and 6 (B). Furthermore, the reaction vessel 42 has a pair of wall portions 42A that constitute the reaction vessel 42 and face each other. In the reaction vessel 42, adsorbent molded bodies 44A and 44B arranged on the wall 42A side, and filters 45A and 45B covering the adsorbent molded bodies 44A and 44B are arranged. A steam channel chamber 46 is formed so as to be sandwiched between the adsorbent molded bodies 44A and 44B via the filters 45A and 45B.

  Further, the steam channel chamber 46 is formed by bending a plate material, and fins 48 are arranged to divide the steam channel chamber 46 into a plurality when viewed from the direction of water vapor flow (hereinafter referred to as “U direction”). ing. Further, a pair of heat medium flow paths 50 and 52 are provided so as to be adjacent to the reaction vessel 42 on the adsorbent molded bodies 44A and 44B side.

  As described above, the adsorber 40 includes the reaction vessel 42, adsorbent molded bodies 44 </ b> A and 44 </ b> B, filters 45 </ b> A and 45 </ b> B, fins 48, and heat medium channels 50 and 52.

  Further, in the following description of the adsorber 40, the direction in which the vapor channel chamber 46 and the adsorbent molded bodies 44A and 44B are arranged in the reaction vessel 42 will be referred to as the V direction (arrangement direction), and the vapor flow direction and arrangement will be described. The direction orthogonal to the direction is referred to as the W direction (flow channel width direction).

  Here, the left-right direction in FIGS. 6A and 6B is the V direction, and in the reaction vessel 42, the adsorbent molded body 44B, the filter 45B, and the steam flow path chamber 46 from the right side to the left side. The filter 45A and the adsorbent molded body 44A are arranged in this order.

[Reaction vessel]
The reaction vessel 42 is a rectangular parallelepiped vessel. As shown in FIG. 6A, an opening 43 and a vapor channel chamber 46 are formed in the central portion in the V direction of the ceiling wall portion 42C of the reaction vessel 42. It is formed so as to face each other. The opening 43 is attached with an end of a connection path 14 to be described later.

[Steam channel and fins]
As described above, the steam channel chamber 46 is sandwiched between the adsorbent molded bodies 44A and 44B, and the steam channel chamber 46 has a steam channel as viewed from the U direction as shown in FIG. 6B. Fins 48 that divide the chamber 46 into a plurality of portions are disposed. The fin 48 is formed by pressing a stainless steel plate and has a rectangular wave shape in which a cross section orthogonal to the U direction repeats unevenness.

[filter]
As shown in FIGS. 6A and 6B, the filters 45A and 45B cover the outer surfaces of the adsorbent molded bodies 44A and 44B other than the portion facing the wall portion 42A in the adsorbent molded bodies 44A and 44B. ing. The filters 45A and 45B have a filtration accuracy smaller than the average particle diameter of the adsorbents constituting the adsorbent molded bodies 44A and 44B. Thereby, while water vapor | steam passes, the adsorbent larger than an average particle diameter is not allowed to pass through.

[Adsorbent molded body]
As an example of the adsorbent shaped bodies 44A and 44B, a porous adsorbent shaped body containing at least one of zeolite, activated carbon, and mesoporous silica is used. In other words, an adsorbent that causes a physical adsorption reaction is used for the adsorbent compacts 44A and 44B.

  Here, the adsorbent molded bodies 44A and 44B adsorb water vapor to dissipate heat (generate heat) to be in an adsorbed state, and the water vapor is desorbed and accumulated to be desorbed and regenerated.

  Further, the amount of water vapor (water) that can be adsorbed by the adsorbent forming bodies 44A and 44B is smaller than the amount of water vapor that can be hydrated by the heat storage material molded bodies 30A and 30B of the heat accumulator 20, for example, 1 / It is about 20.

[Heat medium flow path]
As shown in FIGS. 6A and 6B, the heat medium flow path 50 is disposed adjacent to the outside of the reaction vessel 42 on the adsorbent molded body 44A side, and the heat medium flow path 52 is formed of the adsorbent molded body. It is disposed adjacent to the outside of the reaction vessel 42 on the body 44B side.

  The heat medium passages 50 and 52 are made of, for example, rectangular cylindrical stainless steel, and have inlets 50A and 52A through which the heat medium flows and outlets 50B and 52B through which the heat medium flows out. ing. The inflow of the heat medium from the inlets 50A and 52A into the heat medium flow paths 50 and 52 is indicated by an arrow C, and the heat medium flows from the heat medium flow paths 50 and 52 to the outlets 50B and 52B. Is indicated by an arrow D. Arrows C and D are both along the U direction.

  The heat medium is a medium for heating the adsorbent molded bodies 44A and 44B during desorption and discharging heat from the adsorbent molded bodies 44A and 44B during adsorption.

[Other parts]
Next, the structure which connects between each member is demonstrated.

  As shown in FIG. 1, the chemical heat storage system 10 includes a connection path 14 that connects the opening 23 of the heat storage 20 and the opening 43 of the adsorber 40.

  An opening / closing valve 15 that opens or closes the inside of the connection path 14 is provided at an intermediate portion of the connection path 14. Further, the connecting path 14 on the side of the regenerator 20 with respect to the opening / closing valve 15 is provided with a branching portion 16 that can branch from the connecting path 14, and the connecting path 14 on the side of the adsorber 40 with respect to the opening / closing valve 15 A branching portion 18 that can branch from the connecting path 14 is provided.

  Furthermore, a connection path 56 that connects the discharge port 76B of the evaporator 70 and the branch portion 16 is provided, and a connection path 62 that connects the supply port 64A of the condenser 60 and the branch portion 18 is provided.

  With this configuration, when the on-off valve 15 is closed, the evaporator 70 can supply water vapor to the heat accumulator 20 via the connection path 56, and the adsorber 40 can be connected via the connection path 62. The water vapor can be discharged to the condenser 60.

(Function)
Next, the operation of the chemical heat storage system 10 will be described.

[Heat storage process]
First, a heat storage process in which the heat storage device 20 stores heat and regenerates by removing water vapor from the heat storage device 20 (heat storage material molded bodies 30A and 30B) will be described. In this heat storage process, the heat accumulator 20 is controlled to a temperature equal to or higher than the separation equilibrium pressure, and the adsorber 40 is controlled to a temperature equal to or lower than the adsorption equilibrium pressure.

  Specifically, when heat is stored in the heat storage material molded bodies 30A and 30B of the heat storage device 20, as shown in FIG. 2, the open / close valve 15 is opened, and the adsorber in a desorption state in which water vapor is desorbed in advance. 40 and the heat accumulator 20 are connected via the connection path 14.

  Further, by flowing a heat medium heated by a heat source (not shown) into the heat medium flow paths 24 and 25 of the heat accumulator 20, the heat accumulating material molded bodies 30A and 30B are heated, and the heat accumulator 20 has a separation equilibrium pressure. It is controlled to the above temperature. Thereby, water vapor | steam detaches | leaves from heat storage material molded object 30A, 30B, and heat storage material molded object 30A, 30B stores heat.

  Further, the water vapor separated from the heat storage material molded bodies 30 </ b> A and 30 </ b> B passes through the filters 28 </ b> A and 28 </ b> B, passes through the steam flow path chamber 26, further flows through the connection path 14, and flows into the steam flow path chamber 46 of the adsorber 40.

  On the other hand, the adsorber 40 is controlled to a temperature equal to or lower than the adsorption equilibrium pressure by flowing a low-temperature heat medium (low-temperature heat medium) through the heat medium flow paths 50 and 52 of the adsorber 40.

  The water vapor that has flowed into the vapor channel chamber 46 of the adsorber 40 passes through the filters 45A and 45B and comes into contact with the adsorbent molded bodies 44A and 44B and is adsorbed by the adsorbent molded bodies 44A and 44B. The adsorbent molded bodies 44A and 44B adsorb water vapor to dissipate heat (heat generation), and this heat is discharged by a low-temperature heat medium (low-temperature heat medium) flowing in the heat medium flow paths 50 and 52.

[Intermediate process]
When the adsorbent molded bodies 44A and 44B adsorb water vapor to the limit of the adsorption capacity and the adsorber 40 enters the adsorption state, the circulation of the heat medium in the heat medium flow paths 24 and 25 of the heat accumulator 20 is stopped. Further, the on-off valve 15 is closed. Note that whether or not the adsorber 40 is in the adsorbed state can be determined by measuring the temperature of the heat medium discharged from the heat medium flow paths 50 and 52, for example.

  As described above, the amount of water vapor (water) that can be adsorbed by the adsorbent forming bodies 44A and 44B is reduced relative to the amount of water vapor that can be hydrated by the heat storage material molded bodies 30A and 30B of the heat accumulator 20. Yes. For this reason, the amount of heat stored in the regenerator 20 does not reach the amount of heat that the regenerator 20 can store in the first heat storage step.

[Desorption process]
Next, a desorption process in which the adsorber 40 in the adsorbed state is desorbed (regenerated) will be described.

  With the on-off valve 15 closed, an intermediate temperature heating medium (medium temperature medium) is caused to flow through the heating medium flow paths 50 and 52 of the adsorber 40 as shown in FIG. The adsorbent molded bodies 44A and 44B are heated by the heat medium, whereby water vapor is desorbed from the adsorbent molded bodies 44A and 44B.

  Further, water vapor desorbed from the adsorbent molded bodies 44 </ b> A and 44 </ b> B is discharged from the opening 43 through the vapor flow channel chamber 46. As a result, the adsorption capacity reaches the adsorption capacity and the adsorber 40 in the adsorption state is regenerated to enter the desorption state. In addition, that the adsorber 40 regenerates is a state in which the adsorbable water vapor is desorbed from the adsorbent molded bodies 44A and 44B. That is, the adsorber 40 is in a state where the water vapor having the limit of the adsorption capacity is desorbed.

  Further, the water vapor discharged from the opening 43 is supplied to the condensing chamber 64 of the condenser 60 through the connection port 62 through the supply port 64A.

  Here, a heat medium is passed through the refrigerant flow paths 67 and 68 of the condenser 60. By the heat exchange of the heat medium, the water vapor supplied to the condensation chamber 64 via the supply port 64A is condensed to produce water. The generated water is discharged from the discharge port 64B and stored in the water tank 72 via the connecting pipe 66.

  When the adsorber 40 is in a desorbed state (regenerated), the on-off valve 15 is opened and the heat storage process described above is performed again. And by alternately performing a heat storage process and a desorption process, water vapor | steam detaches | leaves intermittently from the heat accumulator 20, and the heat accumulator 20 accumulates and reproduces | regenerates. Regeneration of the heat accumulator 20 is a state in which water vapor is sufficiently separated from the heat storage material molded bodies 30A and 30B.

  As described above, the adsorber 40, the communication path 14, and the condenser 60 constitute at least a part of the regeneration structure 38 of the heat accumulator 20 according to this embodiment.

[Heat dissipation process]
Next, a heat radiation process for radiating heat from the regenerator 20 (heat storage material molded bodies 30A and 30B) that has accumulated (regenerated) heat will be described.

  With the on-off valve 15 closed, as shown in FIG. 4, the heat medium is caused to flow through the heat medium flow paths 77 and 78 of the evaporator 70.

  On the other hand, water stored in the water tank 72 flows through the connection path 74 by operating a pump (not shown), is supplied to the evaporation chamber 76 of the evaporator 70 through the supply port 76A, and flows through the heat medium channels 77 and 78. It becomes water vapor by the heat of the heat medium. Further, the water vapor in the evaporation chamber 76 is discharged from the discharge port 76 </ b> B, flows through the connection path 56, passes through the branch portion 16 and the opening portion 23, and is supplied to the steam flow path chamber 26 of the heat accumulator 20.

  The steam supplied to the steam channel chamber 26 passes through the filters 28A and 28B and comes into contact with the heat storage material molded bodies 30A and 30B, and the heat storage material molded bodies 30A and 30B react (hydrate) with the water vapor to release heat. . This heat is transported to the object to be heated by the heat medium flowing in the heat medium flow paths 24 and 25.

[Summary]
As described above, in the heat storage process, the heat storage 20 and the adsorber 40 in the desorbed state are connected via the connection path 14. Thereby, since the adsorbent molded bodies 44A and 44B of the adsorber 40 adsorb the water vapor discharged from the heat accumulator 20, the vapor passage chamber 26 of the heat accumulator 20, the inside of the connection path 14, and the vapor of the adsorber 40 The flow path chamber 46 is depressurized with respect to the atmospheric pressure.

  As described above, the steam flow path chamber 26, the inside of the connection path 14, and the steam flow path chamber 46 are depressurized with respect to the atmospheric pressure, so that the regeneration temperature (detachment equilibrium temperature) of the heat accumulator 20 is the atmospheric pressure. It becomes lower than the case. In other words, when the heat accumulator is regenerated, for example, the steam passage chamber 26, the inside of the connection passage 14, and the steam passage chamber 46 are discharged from the factory, for example, as compared with the case where the pressure is not reduced with respect to the atmospheric pressure. Low temperature exhaust heat (waste heat) can be made available.

  In addition, as described above, by providing a desorption process in which the adsorber 40 in the adsorbed state is desorbed, the adsorber 40 regenerated in the desorption process is repeatedly used to adsorb the water vapor discharged from the regenerator 20 again. can do.

  Further, as described above, by alternately performing the heat storage process and the desorption process, the heat storage 20 can be regenerated by intermittently removing the water vapor from the heat storage 20.

  In addition, since the heat accumulator 20 is configured to dissipate and store heat by hydration reaction and dehydration reaction of the molded body of the chemical heat storage material, for example, compared with a configuration that performs physical adsorption by the adsorbent 44, heat dissipation by desorption, and heat storage. , Heat dissipation at a high temperature (for example, 400 ° C.) becomes possible. That is, the heat storage 20 is made to dissipate heat with a high temperature difference with respect to heat input during heat dissipation (a heat source of about 70 ° C. for generating water vapor) as compared with a configuration in which heat dissipation by physical adsorption of the adsorbent 44 is performed. Can do.

Second Embodiment
Next, an example of a regenerator regeneration structure and a chemical heat storage system according to a second embodiment of the present invention will be described with reference to FIGS. In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted. Moreover, the different part from 1st Embodiment is mainly demonstrated and description of another part is abbreviate | omitted.

(Constitution)
As shown in FIG. 7, the chemical heat storage system 80 according to the second embodiment includes two adsorbers 40. In the following description, for convenience of explanation, one adsorber 40 is referred to as a first adsorber 40 (left side in FIG. 7), and the other adsorber 40 is referred to as a second adsorber 140 (right side in FIG. 7). . Further, a code obtained by adding 100 to the code of the first adsorber 40 is used for the second adsorber 140. For example, the sign of the vapor flow path of the first adsorber 40 is 46, while the sign of the vapor flow path of the second adsorber 140 is described as 146. The chemical heat storage system 80 is not provided with an evaporator. The heat accumulator 20 radiates heat by connecting the heat accumulator 20 and the heat accumulator provided separately from the chemical heat accumulator system 80.

  First, the structure etc. which connect between each member are demonstrated.

  The chemical heat storage system 80 includes a connection path 82 that connects the opening 23 of the heat storage 20 and the opening 43 of the first adsorber 40.

  Furthermore, the connection path 84 which connects the outflow ports 24B and 25B of the heat accumulator 20 and the inflow ports 150A and 152A of the second adsorber 140 is provided. The connecting path 84 is branched on the heat storage 20 side and the second adsorber 140 side, and the branched ends are attached to the outlets 24B and 25B and the inlets 150A and 152A.

  In addition, a connection path 86 that connects the opening 143 of the second adsorber 140 and the supply port 64A of the condenser 60 is provided.

  Furthermore, the chemical heat storage system 80 of the present embodiment is provided with a switching device 88 as an example of a switching member that switches (switches) the first adsorber 40 and the second adsorber 140. The switching device 88 grips and moves the first adsorber 40 and the second adsorber 140, and moves the first adsorber 140 to the position where the second adsorber 140 is disposed. The one adsorber 40 is moved to the position where it has been arranged.

  Specifically, the opening 23 of the heat accumulator 20 and the opening 43 of the first adsorber 40 are connected via a connection path 82, and the outlets 24 </ b> B and 25 </ b> B of the heat accumulator 20 and the second adsorber 140 are further connected. The first state (see FIG. 7) is a state in which the inflow ports 150A and 152A are connected via the connection path 84. On the other hand, the opening 23 of the heat accumulator 20 and the opening 143 of the second adsorber 140 are connected via a connection path 82, and the outlets 24 </ b> B and 25 </ b> B of the heat accumulator 20 and the inlet of the first adsorber 40. The state in which 50A and 52A are connected via the connecting path 84 is referred to as a second state (see FIG. 9). The switching device 88 switches the first adsorber 40 and the second adsorber 140 from the first state to the second state and from the second state to the first state. The conditions for switching between the first adsorber 40 and the second adsorber 140 will be described later.

(Function)
Next, the operation of the chemical heat storage system 80 will be described.

[Heat storage process]
First, a heat storage process in which the heat storage device 20 stores heat and regenerates by removing water vapor from the heat storage device 20 (heat storage material molded bodies 30A and 30B) will be described.

  When the heat storage material molded bodies 30 </ b> A and 30 </ b> B of the heat storage device 20 store heat, the desorbed first adsorber 40 and the heat storage device 20 from which water vapor has been desorbed in advance are connected via the connection path 82 as shown in FIG. 8. Are connected. Furthermore, the second adsorber 140 and the heat accumulator 20 in an adsorbed state in which water vapor is adsorbed in advance are connected via a connecting path 84 (first state).

  And the heat medium heated by the heat source (illustration omitted) is poured in the heat medium flow paths 24 and 25 of the heat accumulator 20. For example, when a heating medium of 400 [° C.] is introduced from the inlets 24A and 25A, a heating medium of 370 [° C.] flows out of the outlets 24B and 25B. Thereby, water vapor | steam detaches | leaves from the thermal storage material molded object 30A, 30B because the thermal storage material molded object 30A, 30B is heated. Then, the heat storage material molded bodies 30A and 30B store heat.

  Further, the water vapor separated from the heat storage material molded bodies 30 </ b> A and 30 </ b> B passes through the filters 28 </ b> A and 28 </ b> B, passes through the steam flow path chamber 26, and further flows through the connection path 82 to the steam flow path chamber 46 of the first adsorber 40. Flows in.

  The water vapor flowing into the steam channel chamber 46 passes through the filters 45A and 45B and comes into contact with the adsorbent molded bodies 44A and 44B, and the adsorbent molded bodies 44A and 44B adsorb the water vapor. The adsorbent molded bodies 44A and 44B adsorb water vapor so that the adsorbent molded bodies 44A and 44B dissipate heat (heat generation). And this heat is discharged | emitted by the low-temperature heat medium (low-temperature heat medium) which flows through the inside of the heat-medium flow paths 50 and 52. For example, when a heating medium of 30 [° C.] is introduced from the inlets 50A and 52A, the heating medium of 50 [° C.] flows out from the outlets 50B and 52B.

  Then, the heat accumulator 20 stores heat until the adsorbent molded bodies 44A and 44B sufficiently adsorb water vapor and the adsorber 40 enters an adsorbed state.

[Desorption process]
Next, the desorption process performed in parallel with the heat storage process mentioned above is demonstrated. The desorption step is a step of bringing the second adsorber 140 in the adsorption state into a desorption state.

  As described above, in the heat storage process, a high-temperature heat medium (high temperature medium) heated by a heat source (not shown) is caused to flow in the heat medium flow paths 24 and 25 of the heat accumulator 20. For example, when a heating medium of 400 [° C.] is introduced from the inlets 24A and 25A, a heating medium of 370 [° C.] flows out of the outlets 24B and 25B.

  The heat medium flowing out from the outlets 24 </ b> B and 25 </ b> B of the heat accumulator 20 flows through the connection path 84 and further flows through the heat medium flow paths 150 and 152 of the second adsorber 140. For example, the heat medium having a temperature of 370 [° C.] flowing out from the outlets 24B and 25B becomes 200 [° C.] by flowing through the connecting path 84, and the heat medium having the temperature of 200 [° C.] is caused to flow from the inlets 150A and 152A. And 100 [° C.] heat medium flows out from the outlets 150B and 152B.

  The adsorbent molded bodies 144A and 144B are heated by this heat medium, whereby water vapor is desorbed from the adsorbent molded bodies 144A and 144B, and the second adsorber 140 is desorbed and regenerated.

  Further, the water vapor desorbed from the adsorbent molded bodies 44 </ b> A and 44 </ b> B is discharged from the opening 143 through the vapor flow path 146. Further, the water vapor discharged from the opening 143 flows through the connection path 86 and is supplied to the condensation chamber 64 of the condenser 60 through the supply port 64A.

  Here, a heat medium is passed through the refrigerant flow paths 67 and 68 of the condenser 60. For example, when a heating medium of 30 [° C.] is introduced from the inlets 67A and 68A, a heating medium of 40 [° C.] flows out from the outlets 67B and 68B.

  Thereby, the water vapor supplied to the condensing chamber 64 through the supply port 64A is condensed, and water is generated. The generated water is discharged from the discharge port 64B. Thus, the second adsorber 140 in the adsorbed state is in the desorbed state.

[Adsorber switching process]
Next, a switching process for switching (switching) the first adsorber 40 and the second adsorber 140 will be described. In the switching step, the flow of the fluid flowing through each connection path is stopped using a valve (not shown) or the like.

  When the first adsorber 40 is in an adsorption state in the heat storage process and the second adsorber 140 is in the desorption state in the desorption process, the switching device 88 includes the first adsorber 40 and the second adsorber as shown in FIG. 140 is replaced (second state).

  Specifically, the switching device 88 grips and moves the first adsorber 40 and the second adsorber 140, and moves the first adsorber 40 to the position where the second adsorber 140 has been arranged. The container 140 is moved to the position where the first adsorber 40 was disposed. As a result, the first state described above is switched to the second state.

  And in this 2nd state, the heat storage process and desorption process which were mentioned above are performed again. If it does so, the 2nd adsorption device 140 will be in an adsorption state from a desorption state, and the 1st adsorption device 40 will be in a desorption state from an adsorption state. As described above, the switching device 88 switches the first adsorber 40 and the second adsorber 140 from the second state to the first state. And a heat storage process and a desorption process are performed again. By repeating this, water vapor is removed from the large-capacity heat accumulator 20, and the heat accumulator 20 accumulates and regenerates.

  As described above, the first adsorber 40, the second adsorber 140, the condenser 60, the connection path 82, the connection path 84, and the connection path 86 are at least the regeneration structure 92 of the regenerator 20 according to the present embodiment. Part of it.

  Further, as described above, the first adsorption device 40 and the second adsorption device 140 are alternately connected to the heat storage device 20 by using the regeneration structure 92 of the heat storage device 20, and the first adsorption is not connected to the heat storage device 20. By regenerating the vessel 40 or the second adsorber 140, water vapor can be released from the heat accumulator 20 continuously or at short intervals. Even when the heat accumulator 20 has a large capacity and the first adsorber 40 and the second adsorber 14 have a small capacity, the first adsorber 40 and the second adsorber 140 are alternately connected to the heat accumulator 20. Thus, the heat accumulator 20 can be regenerated by removing water vapor from the heat accumulator 20 continuously or at short intervals.

  Further, by supplying the heat medium flowing out from the heat accumulator 20 to the second adsorber 140, the heat of the heat exchange medium used to regenerate the heat accumulator 20 can be effectively used.

  Other operations and effects are the same as in the first embodiment.

<Third Embodiment>
Next, an example of a regenerator regeneration structure and a chemical heat storage system according to a third embodiment of the present invention will be described with reference to FIGS. In addition, about the same member as 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted. Moreover, only a different part from 2nd Embodiment is demonstrated and description of another part is abbreviate | omitted.

(Constitution)
As shown in FIG. 10, the chemical heat storage system 100 according to the third embodiment includes an evaporator 70 described in the first embodiment and not illustrated in the second embodiment. Furthermore, a connecting path 102 that connects the outlets 150B and 152B of the second adsorber 140 (right side in FIG. 10) and the inlets 77A and 78A of the evaporator 70 is provided. The connection path 102 is branched on the second adsorber 140 side and the evaporator 70 side, and the branched ends are attached to the outlets 150B and 152B and the inlets 77A and 78A.

  Further, a connecting path 104 that connects the discharge port 64B of the condenser 60 and the supply port 76A of the evaporator 70 is provided. Note that a pump (not shown) is provided at an intermediate portion of the connecting path 104.

  Further, two heat accumulators 20 are provided. In the following description, for convenience of explanation, one heat accumulator 20 is referred to as a first heat accumulator 20 (left side in FIG. 10), and the other heat accumulator 120 is referred to as a second heat accumulator 120 (right side in FIG. 10). . A sign obtained by adding 100 to the sign of the first heat accumulator 20 is used for the second heat accumulator 120. For example, the sign of the steam flow path of the first heat accumulator 20 is 26, while the sign of the steam flow path of the second heat accumulator 120 is described as 126.

  Moreover, the connection path 106 which connects the discharge port 76B of the evaporator 70 and the opening part 123 of the 2nd heat storage device 120 is provided.

(Function)
Next, the operation of the chemical heat storage system 100 will be described.

[Heat storage process]
First, a heat storage process in which the heat storage unit 20 (heat storage material molded bodies 30A and 30B) stores heat and regenerates by the release of water vapor from the first heat storage unit 20 (heat storage material molded bodies 30A and 30B) will be described.

  When the heat storage material molded bodies 30A and 30B of the first heat storage device 20 store heat in the chemical heat storage system 100, as shown in FIG. 11, the desorbed adsorber 40 and the first heat storage device in which water vapor is desorbed in advance. 20 are connected to each other through a connecting path 82. Furthermore, the second heat accumulator 120 and the evaporator 70 regenerated in advance are connected via the connection path 106.

  As explained in the second embodiment, the heat accumulator 20 (heat storage material molded bodies 30A, 30B) stores heat by the release of water vapor from the first heat storage device 20 (heat storage material molded bodies 30A, 30B).

[Desorption process]
Next, the desorption process performed in parallel with the heat storage process mentioned above is demonstrated. The desorption step is a step of bringing the second adsorber 140 in the adsorption state into a desorption state.

  As described in the second embodiment, the water vapor discharged from the opening 143 of the second adsorber 140 flows through the connection path 86 and is supplied to the condensation chamber 64 of the condenser 60 through the supply port 64A.

  Here, a heat medium is passed through the refrigerant flow paths 67 and 68 of the condenser 60. Thereby, the water vapor supplied to the condensing chamber 64 through the supply port 64A is condensed, and water is generated. The generated water is discharged from the discharge port 64B.

  For example, by supplying 150 [° C.] water vapor to the condensing chamber 64 through the supply port 64A, the water vapor is condensed and 40 [° C.] water is discharged from the discharge port 64B.

[Heat dissipation process]
Next, the heat dissipation process performed in parallel with the heat storage process and the desorption process described above will be described. The heat radiating step is a step of radiating heat from the second heat accumulator 120 (heat storage material molded bodies 130A and 130B) that has been preheated (regenerated).

  In the desorption process, water discharged from the discharge port 64B of the condenser 60 flows through the connecting path 104 by operating a pump (not shown), and is supplied to the evaporation chamber 76 of the evaporator 70 through the supply port 76A. .

  Here, in the above-described adsorption step, the heat medium flowing out from the outlets 150B and 152B of the second adsorber 140 flows through the connection path 102 and passes through the inlets 77A and 78A, and the heat medium flow paths 77 and 78 of the evaporator 70. Flow into. Further, the heat medium that has flowed into the heat medium flow paths 77 and 78 flows out of the outlets 77B and 78B.

  As a result, the water supplied to the evaporation chamber 76 is evaporated by the heat of the heat medium flowing through the heat medium flow paths 77 and 78 to generate water vapor. Further, the water vapor in the evaporation chamber 76 is discharged from the discharge port 76 </ b> B, flows through the connecting path 106, and is supplied to the steam flow path 126 of the second heat accumulator 120 through the opening 123.

  The steam supplied to the steam channel 126 passes through the filters 128A and 128B and comes into contact with the heat storage material molded bodies 130A and 130B, and the heat storage material molded bodies 30A and 30B react with the water vapor to radiate heat. This heat is transported to the object to be heated by the heat medium flowing in the heat medium flow paths 124 and 125.

  As described above, by supplying the water condensed and generated by the condenser 60 to the evaporator 70, the latent heat of condensation generated by condensing the water can be effectively used.

  Moreover, the heat of the heat medium flowing out from the second adsorber 140 can be effectively utilized by causing the heat medium flowing out from the second adsorber 140 to flow into the evaporator 70.

  And by the effective use of the heat of this heat medium, high temperature water vapor is generated in the evaporator 70, and further, the high temperature water vapor is supplied to the heat accumulator 120, so that the heat radiation temperature of the heat accumulator 120 becomes high.

  Other operations and effects are the same as those of the second embodiment.

<Fourth embodiment>
Next, an example of a regenerator regeneration structure and a chemical heat storage system according to a fourth embodiment of the present invention will be described with reference to FIGS. In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted. Moreover, only a different part from 1st Embodiment is demonstrated and description of another part is abbreviate | omitted. In addition, arrow UP shown in the figure shows the upper direction of the perpendicular direction.

  As shown in FIG. 12, the heat accumulator 220 according to the fourth embodiment includes a reaction vessel 222, a heat storage material reaction unit 230 that is arranged in the reaction vessel 222 and generates heat or stores heat, and a heat flow in which a heat medium flows. Part 250.

[Reaction vessel]
The reaction vessel 222 is formed of a stainless steel plate or the like, and has a cylindrical main body portion 222A extending in the vertical direction, a disk-shaped upper lid member 222B that closes the upper end of the main body portion 222A, and a disk shape that closes the lower end of the main body portion 222A. And a lower lid member 222C.

  Thereby, the inside of the reaction vessel 222 is isolated from the outside of the reaction vessel 222. The inside of the reaction vessel 222 is a reaction medium flow part 226 through which water vapor (an example of a reaction medium) flows.

[Heat storage material reaction section: overall configuration]
The heat storage material reaction part 230 is enclosed inside the reaction vessel 222 so as to be surrounded by the reaction medium flow part 226, and as shown in FIG. 16, between the pair of heat storage material layers 232 and the pair of heat storage material layers 232. And a reaction medium diffusion layer 236 disposed between the pair of heat storage material constraining layers 234.

  The heat storage material layer 232, the heat storage material constraining layer 234, and the reaction medium diffusion layer 236 have the same rectangular shape when viewed from the vertical direction, and are in a non-joined state (not fixed by welding or the like) along the vertical direction. ) (So-called laminated structure).

[Heat storage material reaction part: Heat storage material layer]
As shown in FIGS. 20A and 20B, the heat storage material layer 232 includes a heat storage material unit 242 composed of a plurality (16 in this embodiment) of heat storage material molded bodies 240 and a heat storage material unit 242. And a frame member 244 to be attached.

  In addition, the frame member 244 to which the four heat storage material units 242 are attached has a cross-shaped partition that partitions the outer frame 244A having a rectangular frame shape when viewed from the vertical direction and a space in which the adjacent heat storage material units 242 are disposed. Frame 244B.

[Heat storage material reaction part: Heat storage material constrained layer]
As shown in FIG. 16, the heat storage material constraining layer 234 is an etching filter that is sandwiched between the reaction medium diffusion layer 236 and the heat storage material layer 232 and has a large number of through holes of φ200 [μm].

  And the thermal storage material constrained layer 234 has a filtration accuracy smaller than the average particle diameter of the thermal storage material constituting the thermal storage material molded body 240 (see FIG. 20). Thereby, in the heat storage material constrained layer 234, water vapor is allowed to pass through a flow path smaller than the average particle diameter of the heat storage material constituting the heat storage material molded body 240, while passage of the heat storage material larger than the average particle diameter is allowed. It comes to restrict.

[Heat storage material reaction part: Reaction medium diffusion layer]
As shown in FIG. 16, the reaction medium diffusion layer 236 is sandwiched between a pair of heat storage material constraining layers 234, communicates with the reaction medium flow portion 226 (see FIG. 12), and is supplied to the heat storage material layer 232. Water vapor or water vapor discharged from the heat storage material layer 232 flows.

  As shown in FIG. 18A, the reaction medium diffusion layer 236 includes a frame member 246 and four flow path members 248 that are attached to the frame member 246 and have a rectangular shape when viewed from the vertical direction. Yes.

  The frame member 246 includes a pair of external frames 246A that are rectangular in shape when viewed from the vertical direction and are spaced apart in the vertical direction, and a cross-shaped partition frame 246B that partitions adjacent flow path members 248. The partition frame 246B has a rectangular cross section, and a pair of outer frames 246A are fixed to the upper and lower surfaces of the end of the cross-shaped partition frame 246B when viewed from the vertical direction. Thereby, a rectangular attachment space 246C to which the four flow path members 248 are attached is formed.

  The flow path member 248 is formed from a corrugated plate (see FIG. 18B) having a rectangular wave-shaped cross section in which unevenness is repeated, and the flow path direction in which the uneven portion extends is a frame member 246 as viewed from the vertical direction. (See FIG. 19B). The flow path of the flow path member 248 is opened toward the corner of the frame member 246. Thus, an upper flow path 248A in which water vapor flowing along the flow path direction is opened upward and a lower flow path 248B in which water vapor is opened downward are formed (see FIG. 19A).

  Then, as shown in FIGS. 19A and 19B, the reaction medium diffusion layer 236 allows the water vapor in the reaction medium flowing portion 226 to flow out or inflow from the end faces in the four directions of the reaction medium diffusion layer 236. .

[Heat flow part]
As shown in FIG. 16, the pair of heat flow parts 250 are provided so as to sandwich the heat storage material reaction part 230 from above and below. In other words, the heat fluidizing part 250 is superimposed on the heat storage material reaction part 230 and is arranged next to the heat storage material reaction part 230.

  As shown in FIG. 17, the thermal fluid portion 250 includes a rectangular main body portion 252 as viewed from the vertical direction, and a pair of protrusion portions 254 that protrude from the main body portion 252 so that the distal end sides are separated from each other as viewed from the vertical direction. 256.

  The pair of protrusions 254 and 256 are formed with through holes 254A and 256A that penetrate the protrusions 254 and 256 in the vertical direction. On the other hand, a corrugated flow path 252A through which the heat medium flows is formed inside the main body 252. One end of the flow path 252A is opened to the peripheral surface of the through hole 254A, and the other end of the flow path 252A is the through hole. It is open to the circumferential surface of 256A. In the flow path 252A, a heat source disposed outside the reaction vessel 222 is communicated with a heat utilization object through a heat medium flow path 270 described later.

  Further, as shown in FIG. 16, a pair of end plates 260 are provided so as to sandwich the pair of heat flow portions 250 from the vertical direction.

〔end plate〕
As shown in FIG. 15A, the end plate 260 includes a rectangular main body 262 as viewed from the vertical direction and four protrusions 264 that protrude from the four corners of the main body 262. Each projecting portion 264 is formed with a through-hole 264A penetrating in the vertical direction.

  15A and 15B, the heat storage material reaction unit 230 is sandwiched between the pair of heat flow units 250 so that the pair of end plates 260 sandwich the pair of heat flow units 250. It has become.

  In this state, the bolts 266 are passed through the respective through holes 264A formed in the protrusions 264 of the end plate 260 disposed above, and the end plates of the respective bolts 266 are disposed below. Each of the through holes 264A formed in the protruding portion 264 of 260 is penetrated. Further, by tightening a nut at the tip of the bolt 266, a vertical restraining force is generated in the pair of heat flow parts 250 and the heat storage material reaction part 230 sandwiched between the pair of end plates 260.

[Heat medium flow path]
As shown in FIG. 14, the heat medium flow path 270 has a pipe shape, and is provided with two extending in the vertical direction so as to penetrate the upper lid member 222 </ b> B constituting the reaction vessel 222. One heat medium flow path 270A is used to allow the heat medium to flow into the reaction container 222 from the outside of the reaction container 222, and the other heat medium flow path 270B reacts the heat medium from the inside of the reaction container 222. Used to flow out of the container 222.

  As shown in FIG. 13, a through hole (not shown) is formed in the peripheral surface of the heat medium flow path 270A. As shown in FIG. 13, the heat medium flow path 270A has a pair of heat flow portions. It is inserted into a through hole 256 </ b> A formed in 250. Similarly, a through hole (not shown) is formed in the peripheral surface of the heat medium flow path 270B, and the heat medium flow path 270B is inserted into the through holes 254A formed in the pair of heat flow portions 250. ing. As a result, the heat medium flow path 270 and the flow path 252A (see FIG. 17) formed in the heat fluid portion 250 are communicated with each other.

[Other parts]
As shown in FIG. 12 and FIG. 13, the heat storage material reaction unit 230 and the heat fluidizing unit 250 which are restrained by using the end plate 260 and in which the heat medium channels 270A and 270B are inserted into the through holes 254A and 256A are moved from below. Four columnar supporting members 272 (two in FIG. 12 and only three in FIG. 13) to be supported are provided. With this configuration, a heat insulating effect can be obtained below the heat fluid portion 250 disposed on the lower side.

  In addition, about an effect | action and an effect, it is the same as that of 1st Embodiment.

  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. For example, in the second and third embodiments, two adsorbers are provided, and the two adsorbers alternately adsorb or desorb, whereby water vapor is continuously desorbed from the heat accumulator. Water vapor may be continuously released from the heat accumulator using one or more adsorbers. When three or more adsorbers are used, one adsorber is connected to the heat accumulator via the connection path 82, and one of the other adsorbers is connected to the heat accumulator via the connection path 84. The adsorbers that are connected to each other and not connected to the heat accumulator via the connecting path 82 or the connecting path 84 may be rested. Further, all of the other plurality of adsorbers may be connected to the heat accumulator via the branched connection path 84.

  Moreover, although the said Example demonstrated taking as an example the structure provided with a condenser and an evaporator in the regeneration structure of a heat storage device, it is not necessary to use a condenser and an evaporator for the regeneration structure of a heat storage device.

  In addition, the regeneration structure of the heat storage device in the first and second embodiments may be configured as an independent device without forming a part of the chemical heat storage system having the heat dissipation function of the heat storage device 20. Such a regeneration structure of the regenerator independent of the chemical heat storage system is used for regenerating the regenerator 20, for example, in a mode in which only the regenerated regenerator 20 is transported to the heating site to be heated.

  Further, in the above embodiment, although not particularly described, as a heat storage material, using an ammonia reaction system in alkali metal chloride, alkaline earth metal chloride, alkali metal bromide, alkaline earth metal bromide, as a reaction medium, Ammonia may be used. In this configuration, the internal pressure of the container is in a pressurized state.

  In the second and third embodiments, the switching device 88 switches the positions of the adsorber 40 and the adsorber 140 so that water vapor is continuously detached from the heat accumulator 20. By switching the path 84, the water vapor may be continuously removed from the heat accumulator 20.

  Moreover, in the said 2nd, 3rd embodiment, although the thermal storage process and the desorption process were performed in parallel, it does not need to be performed especially in parallel.

  Moreover, although the heating medium was not specifically described in the above embodiment, a high-temperature heating medium or an inorganic mixed heating medium may be used as the heating medium during high-temperature operation.

  Although not specifically described in the fourth embodiment, a through hole may be formed in the main body 222A, and the through hole may be used as the opening of the upper flow path 248A and the lower flow path 248B.

DESCRIPTION OF SYMBOLS 10 Chemical thermal storage system 14 Connection path 20 Thermal storage unit 38 Regenerative structure 40 of thermal storage unit Adsorber 60 Condenser (an example of a medium processing apparatus)
62 Connection 70 Evaporator (an example of a feeder)
82 connection path 88 switching device (an example of a switching member)
92 Regenerator Regeneration Structure 100 Chemical Heat Storage System 120 Heat Storage 140 Adsorber 220 Heat Storage

Claims (6)

An adsorber that adsorbs the reaction medium;
When regenerating a heat accumulator that stores heat by a chemical reaction, the heat accumulator and the adsorber are connected, a connection path through which a reaction medium discharged from the heat accumulator and adsorbed by the adsorber flows,
Regenerative structure of a regenerator. A plurality of the adsorbers are provided,
2. A switching member that switches between a state in which one adsorber and the heat accumulator are connected by the connection path and a state in which the other adsorber and the heat accumulator are connected by the connection path. The regeneration structure of the heat accumulator described in 1.   The regeneration structure for a heat accumulator according to claim 2, wherein the adsorber that is not connected to the heat accumulator is regenerated by the connection path.   The regeneration structure of the regenerator according to claim 3, wherein when regenerating the adsorber on which the reaction medium discharged from the regenerator is adsorbed, a heat exchange medium used to regenerate the regenerator is supplied. A regeneration structure for a heat accumulator according to claim 4,
In the regeneration structure of the heat accumulator, a heat exchange medium supplied from the heat accumulator to the adsorber and discharged from the adsorber is supplied, and a supply device for supplying a reaction medium to the regenerated heat accumulator;
A chemical heat storage system. A medium processor for condensing the reaction medium discharged from the adsorber when regenerating the adsorber adsorbed by the reaction medium discharged from the heat accumulator;
Supplying the reaction medium discharged from the adsorber supplied with a heat exchange medium in the regeneration structure of the heat storage unit to the medium processing unit;
The chemical heat storage system according to claim 5, wherein heat generated by condensing the reaction medium in the medium processing device is supplied to the supply device.

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