JP2016118315A - Chemical heat storage reactor and heat transport system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical heat storage reactor capable of enlarging apparent heat storage density by reducing size and weight without using a heating medium in a heat storage container and a heat exchanger for a heating medium, and to provide a heat transport system capable of achieving efficient heat transport in which transport cost is suppressed by utilizing the chemical heat storage reactor.SOLUTION: A chemical heat storage reactor includes: a chemical heat storage material for storing heat by a forward reaction and radiating heat by a reverse reaction; a fluid flow passage for allowing a fluid for exchanging heat by coming into contact with the chemical heat storage material to pass; and a heat storage container for storing the chemical heat storage material and the fluid flow passage inside. In a heat storage step, heat is stored by generating a forward reaction by introducing a heat supply fluid supplied from heat supply equipment into the fluid flow passage and allowing it to come into contact with the chemical heat storage material, in a heat radiation step, heat is radiated by generating a reverse reaction by introducing a heat receiving fluid into the fluid flow passage and allowing it to come into contact with the chemical heat storage material, and the heat receiving fluid is heated by the heat quantity radiated by the chemical heat storage material and led out to heat demand equipment.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a chemical heat storage reactor for storing heat energy such as exhaust heat released to the environment in a chemical heat storage material, and storing the chemical heat storage material for use in storage or transfer to a place where heat energy is required, and the same. The present invention relates to a heat transport system using

  In recent years, issues such as depletion of fossil fuels, departure from dependence on nuclear power, or destruction of the natural environment and global warming have been taken up, and interest in technologies that effectively use thermal energy released to the environment has increased. Yes. In particular, high-temperature thermal energy released from garbage incineration facilities, power plants, steelworks, various factories, etc. is released into the environment as a large amount of waste heat without being used. Various heat storage technologies have been studied for the purpose of recovering and effectively using the thermal energy released to these environments.

  In general, heat storage technology is classified into two types: direct heat storage using thermal energy such as sensible heat and latent heat of materials, and indirect heat storage using chemical energy. Sensible heat storage in direct heat storage is a method of storing thermal energy in the form of an increase in the temperature of a substance, and is a preferable method from the viewpoint of economy such as ease of handling the heat storage material and simplicity of the apparatus. However, there is a problem that the heat storage density of the substance is small, and heat loss is large in long-distance transfer and long-term heat storage. In addition, latent heat storage in direct heat storage is a method of storing thermal energy in the form of phase changes such as substance dissolution, solidification, evaporation, condensation, sublimation, etc., and has a higher heat storage density than sensible heat storage, and heat storage and heat dissipation. The temperature of is constant. However, even in latent heat storage, there is a problem that heat loss is large in long-distance transfer and long-term heat storage.

  On the other hand, chemical heat storage in indirect heat storage is a method of storing heat energy in the form of chemical reactions such as heat of adsorption / desorption of substances, heat of fusion, heat of dilution, etc., and the heat storage density is much larger than sensible heat storage and latent heat storage. Become. Moreover, if the substance before and after the chemical reaction is stable, there is almost no heat dissipation loss, and no heat loss occurs during long-distance transfer or long-term heat storage. Furthermore, chemical heat storage also has a chemical heat pump function that can release thermal energy at a temperature different from the heat storage temperature, and in some cases higher than the heat storage temperature. Therefore, a suitable heat transport system is established by converting heat energy into chemical substances using a heat storage container containing a chemical heat storage material and storing the heat storage container for a long period of time or stably transferring it to a remote place. To do.

  In general, the transfer of heat energy from a heat supply source that releases heat energy to the heat storage material in the heat storage container, and the transfer of heat energy from the heat storage material in the heat storage container to the heat demand source, respectively, Uses a heat medium flow path that circulates. Specifically, the heat storage container has a heat storage material, a heat exchanger, and a filled heat medium therein. On the other hand, the heat supply source and the heat demand source have heat medium flow paths filled with a heat exchanger and a heat medium, respectively.

  Therefore, in the stage of storing heat in the heat storage material, the heat medium pipe of the heat storage container is connected to the heat medium flow path of the heat supply source, and the heat medium of the heat supply source is circulated between the heat medium in the heat storage container. Stores heat in the heat storage material. The heat storage container after heat storage is separated from the heat supply source and transferred to the heat demand source. Next, in the heat dissipation stage from the heat storage material, the heat medium pipe of the heat storage container is connected to the heat medium flow path of the heat demand source, and the heat energy radiated from the heat storage material is heated by circulating the heat medium mutually. Supply to demand sources. The heat storage container after heat radiation is separated from the heat demand source and transferred again to the heat supply source.

  In such a heat transport system, a heat storage container transferred between a heat supply source and a heat demand source accommodates a heat storage material, a heat exchanger, and a heat medium therein. Furthermore, when the heat storage material is a chemical heat storage material and reaction water or the like is involved in the chemical reaction of heat storage and heat dissipation, an evaporation condenser may be accommodated inside the heat storage container. Accordingly, the volume other than the heat storage material in the heat storage container is increased, the heat storage container is enlarged, and the apparent heat storage density per capacity is reduced. In addition, the weight other than the heat storage material in the heat storage container becomes heavy, the heat storage container becomes heavier, and the apparent heat storage density per weight decreases. As described above, when the heat storage container is increased in size and weight and the apparent heat storage density is reduced, there is a problem that the transportation cost in the heat transportation system is increased.

  Therefore, attempts have been made to increase the apparent heat storage density by reducing the size and weight of the heat storage container. For example, a chemical heat pump container according to Patent Document 1 below uses a chemical heat storage reactor. In the present invention, the chemical heat storage reactor containing the heat storage material and the evaporative condenser are combined in a compact size and can be transported by a vehicle. In addition, the heat transport system and the heat transport method according to Patent Document 2 described below do not use a chemical heat storage material, but when the heat storage container is transferred, the heat medium is taken out from the heat storage container to reduce the weight, and is transferred at a low cost. Is.

JP 2008-25853 A JP 2008-45771 A

  By the way, the chemical heat pump container according to Patent Document 1 is a compact heat storage container that is made compact. However, in addition to the chemical heat storage reactor, the evaporative condenser filled with the solution is transferred at the same time, and the weight reduction is not considered and there is a limit to downsizing, and the apparent heat storage density per weight is increased. Difficult to do. On the other hand, the heat transport system according to Patent Document 2 takes out and transfers the heat medium accommodated in the heat storage container from the storage container in the heat storage container. However, although the storage container becomes empty and the heat storage container becomes lighter, the empty storage container still occupies a large volume, and it is difficult to increase the apparent heat storage density per capacity.

  In view of the above, the present invention can increase the apparent heat storage density by reducing the size and weight without using the heat medium in the heat storage container and the heat exchanger for the heat medium. The object is to provide a chemical heat storage reactor. Another object of the present invention is to provide a heat transport system that uses this chemical heat storage reactor and can realize efficient heat transport with reduced transport costs.

  In solving the above-mentioned problems, the present inventors, as a result of intensive research, have found that between a chemical heat storage reactor and a heat supply source (hereinafter referred to as “heat supply equipment”) or a heat demand source (hereinafter referred to as “heat demand equipment”). Heat exchange between the chemical heat storage material and the heat supply fluid supplied directly from the heat supply equipment or the heat receiving fluid supplied directly from the heat demand equipment The present invention has been completed by studying a chemical heat storage reactor capable of performing the above.

That is, the chemical heat storage reactor according to the present invention, according to the description of claim 1,
A chemical heat storage material (12, 22) that stores heat by a normal reaction and dissipates heat by a reverse reaction, and a fluid channel (13, 23), and a heat storage container (11, 21) for accommodating the chemical heat storage material and the fluid flow path therein,
In the heat storage stage to the chemical heat storage material, the heat supply fluid (32) supplied from the heat supply facility (30) is introduced into the fluid flow path and brought into contact with the chemical heat storage material. Create a positive reaction and store heat,
In the heat release stage from the chemical heat storage material, the heat receiving fluid (42) is introduced into the fluid flow path and brought into contact with the chemical heat storage material, thereby causing a reverse reaction of the chemical heat storage material to dissipate heat, and The heat receiving fluid is heated by the amount of heat dissipated by the chemical heat storage material and led to the heat demand facility (40).

According to the description of claim 2, the present invention provides the chemical heat storage reactor according to claim 1,
The heat storage container introduces the heat receiving fluid from the fluid flow path to the heat demanding facility, and an inlet for introducing the heat supply fluid (32) supplied from the heat supply facility into the fluid flow path. It has at least one opening (11a, 11b, 21a, 21b) as a lead-out port for this purpose.

According to the description of claim 3, the present invention provides the chemical heat storage reactor according to claim 2,
The opening includes a lid member (24a, 24b) for thermally blocking the amount of heat stored in the chemical heat storage material so as not to dissipate to the outside.

Moreover, according to the description of claim 4, the present invention provides the chemical heat storage reactor according to any one of claims 1 to 3,
The chemical heat storage material is a chemical heat storage material that stores heat as a dehydration reaction as a positive reaction and dissipates heat as a reverse reaction of a hydration reaction,
The heat supply fluid is a fluid having a temperature higher than the dehydration reaction temperature of the chemical heat storage material and causes contact with the chemical heat storage material to cause a dehydration reaction.
The heat receiving fluid is a fluid containing water vapor or moisture, and the amount of reaction water necessary for the hydration reaction of the chemical heat storage material or in contact with the chemical heat storage material in a state containing excess water As well as
The chemical heat storage material heats the heat-receiving fluid and / or the excess water by the amount of heat radiated by a hydration reaction, and leads to the heat demand facility.

Moreover, according to the description of claim 5, the heat transport system according to the present invention is
The chemical heat storage reactor (10, 20) according to any one of claims 1 to 4, a heat supply facility (30), and a heat demand facility (40),
The amount of heat supplied from the heat supply facility is supplied to the chemical heat storage reactor to store heat by a positive reaction of the chemical heat storage material,
Store or transfer the chemical heat storage reactor after heat storage away from the heat supply equipment,
Heat stored in the chemical heat storage reactor after storage or transfer is dissipated by the reverse reaction of the chemical heat storage material and used in the heat demand facility,
The chemical heat storage reactor after heat radiation is transferred to the heat supply facility separated from the heat demand facility, and heat is stored again.

According to a sixth aspect of the present invention, in the heat transport system according to the fifth aspect,
The heat supply facility includes a heat supply chamber (31) sealed from an external environment for supplying the amount of released heat to the chemical heat storage reactor,
The heat demand facility includes a heat receiving chamber (41) sealed from an external environment for supplying the heat demand facility with the amount of heat radiated from the chemical heat storage reactor.

According to a seventh aspect of the present invention, in the heat transport system according to the sixth aspect,
Each of the heat supply chamber and the heat receiving chamber includes an opening / closing door (31a, 41a) for sealing the inside from the outside environment and accommodating the transferred chemical heat storage reactor from the outside environment to the inside. Features.

According to the description of claim 8, the present invention provides the heat transport system according to claim 6,
The heat supply chamber and the heat receiving chamber include a transfer passage (51) sealed from an external environment for transferring the chemical heat storage reactor between them,
Each of the heat supply chamber and the heat receiving chamber includes an open / close door (31a, 41a) for delivering the chemical heat storage reactor to and from the transfer passage.

According to the description of claim 9, the present invention provides the heat transport system according to claim 7 or 8,
The heat supply chamber and the heat receiving chamber, and / or the transfer passage are provided with a decompression mechanism (34, 44, 52, 34a, 44a, 52a, VP) for maintaining the interior in a decompressed state. Features.

According to the description of claim 10, the present invention provides the heat transport system according to claim 6,
The heat supply chamber includes a heat supply preparation chamber (83) sealed from the external environment,
The heat receiving chamber includes a heat receiving preparation chamber (85) sealed from the outside environment,
Each of the heat supply chamber and the heat receiving chamber includes an open / close door (31a, 41a) for transferring the chemical heat storage reactor between the heat supply preparing chamber or the heat receiving preparation chamber,
Each of the heat supply preparation chamber and the heat reception preparation chamber includes other open / close doors (83a, 85a) for accommodating the chemical heat storage reactor from the outside environment.

According to the description of claim 11, the present invention provides the heat transport system according to claim 6,
The heat supply chamber includes a heat supply preparation chamber (63) sealed from the external environment,
The heat receiving chamber includes a heat receiving preparation chamber (65) sealed from the outside environment,
The heat supply preparation chamber and the heat reception preparation chamber comprise a transfer forward path (61) and a transfer return path (62) sealed from an external environment for transferring the chemical heat storage reactor between each other,
Each of the heat supply chamber and the heat receiving chamber includes an open / close door (31a, 41a) for transferring the chemical heat storage reactor between the heat supply preparing chamber or the heat receiving preparation chamber,
Each of the heat supply preparation chamber and the heat reception preparation chamber includes an open / close door (63a, 63b, 65a, 65b) for delivering the chemical heat storage reactor between the transfer forward path and the transfer return path, respectively. It is characterized by doing.

According to the description of claim 12, the present invention provides the heat transport system according to claim 10 or 11,
The heat supply chamber and the heat reception chamber, the heat supply preparation chamber and the heat reception preparation chamber, and / or the transfer forward path and the transfer return path are decompression mechanisms (64, 66) for maintaining the interior in a decompressed state. , 84, 86, 64a, 66a, 84a, 86a, VP).

  According to the structure of the said Claim 1, a chemical thermal storage reactor has a thermal storage container, and accommodates the chemical thermal storage material and the fluid flow path in the inside. A chemical heat storage material is composed of a substance that stores heat by a normal reaction and dissipates heat by a reverse reaction, and can directly exchange heat with a fluid (heat supply fluid or heat reception fluid) that passes through a fluid flow path. it can. That is, in the heat storage stage, the chemical heat storage material comes into contact with the heat supply fluid supplied from the heat supply facility to cause a positive reaction, and can store heat directly without using a heat medium. On the other hand, in the heat dissipation stage, the chemical heat storage material comes into contact with the heat receiving fluid to cause a reverse reaction, and heat can be directly radiated without using a heat medium. In this heat radiation stage, the heat receiving fluid can be directly heated by the amount of heat radiated by the chemical heat storage material and supplied to the heat demand facility.

  Therefore, according to the structure of the said Claim 1, since a heat exchanger for heat media and heat media is not used, a chemical heat storage reactor can be reduced in size and weight. This makes it possible to increase the apparent heat storage density of the chemical heat storage reactor.

  Further, according to the configuration described in claim 2, the heat storage container of the chemical heat storage reactor has an opening serving as an inlet for introducing the heat supply fluid supplied from the heat supply facility into the fluid flow path. doing. The heat storage container has an opening serving as a lead-out port for leading the heat-receiving fluid from the fluid flow path to the heat demand facility. These inlets and outlets may be composed of one opening or may be composed of another opening. Therefore, also in the configuration of the second aspect, the same effect as that of the first aspect can be achieved more specifically.

  Moreover, according to the structure of the said Claim 3, the opening part which a thermal storage container has may comprise a cover member. This lid member is for thermally shutting off the heat storage container from the external environment. This prevents the amount of heat stored in the chemical heat storage material in the chemical heat storage reactor being transferred from being dissipated to the outside. Therefore, also in the structure of the said Claim 3, while being able to achieve the effect similar to Claim 2, more efficient heat transport can be performed.

  Moreover, according to the structure of the said Claim 4, a chemical heat storage material may be a chemical heat storage material which heat-stores dehydration reaction as a normal reaction and radiates heat | fever using a hydration reaction as a reverse reaction. In this chemical heat storage material, the heat supply fluid is a fluid having a temperature higher than the dehydration reaction temperature of the chemical heat storage material. Thereby, the chemical heat storage material in contact with the heat supply fluid generates a dehydration reaction and stores heat. On the other hand, the heat receiving fluid may be water vapor or a fluid containing moisture. This heat receiving fluid contains the amount of reaction water necessary for the hydration reaction of the chemical heat storage material, or may contain a water content that is excessive than the amount of reaction water. Thus, the chemical heat storage material in contact with the heat receiving fluid obtains reaction water, causes a hydration reaction, and dissipates heat. At this time, the heat receiving fluid is heated by the amount of heat released by the hydration reaction. In addition, excess moisture contained in the heat receiving fluid is heated. The heat receiving fluid heated in this way is led to a heat demand facility and used. Therefore, also in the structure of the said Claim 4, the effect similar to Claims 1-3 can be achieved still more concretely.

  Moreover, according to the structure of the said Claim 5, a heat transport system has the chemical thermal storage reactor as described in any one of Claims 1-4, heat supply equipment, and heat demand equipment. ing. In this heat transport system, first, a chemical heat storage reactor is connected to a heat supply facility, and the amount of heat supplied from the heat supply facility is supplied to the chemical heat storage reactor to store heat by a positive reaction of the chemical heat storage material. Next, the chemical heat storage reactor after heat storage is separated from the heat supply equipment and stored or transferred to a separated position. Thereafter, the chemical heat storage reactor after storage or transfer is connected to the heat demand facility, and the heat stored in the chemical heat storage reactor is dissipated by the reverse reaction of the chemical heat storage material and used in the heat demand facility. Next, the chemical heat storage reactor after heat radiation is disconnected from the heat demand facility, transferred to a heat supply facility at a remote location, and reheated.

  Therefore, in this heat transport system, it is possible to realize efficient heat transport by reducing the transport cost by using a chemical heat storage reactor that is reduced in size and weight and has an increased apparent heat storage density.

  Moreover, according to the structure of the said Claim 6, the heat supply equipment may be provided with the heat supply chamber sealed from the external environment. The heat supply chamber supplies the amount of heat released by the heat supply facility to the chemical heat storage reactor. On the other hand, the heat demand facility includes a heat receiving chamber sealed from the outside environment. The heat receiving chamber supplies the heat demand facility with the amount of heat radiated from the chemical heat storage reactor. This improves the heat exchange efficiency in the heat exchange between the chemical heat storage reactor and the heat supply facility or the heat demand facility. Therefore, also in the configuration according to the sixth aspect, the same effect as that of the fifth aspect can be further achieved.

  Moreover, according to the structure of the said Claim 7, both the heat supply chamber and the heat receiving chamber may comprise the opening-and-closing door for sealing an inside from an external environment. This open / close door is used to accommodate the transferred chemical heat storage reactor from the outside environment. This reduces the amount of heat dissipated to the external environment in heat exchange between the chemical heat storage reactor and the heat supply facility or heat demand facility. Therefore, also in the structure of the said Claim 7, the effect similar to Claim 6 can be achieved further.

  Moreover, according to the structure of the said Claim 8, a heat supply chamber and a heat receiving chamber may be provided with the transfer path sealed from the external environment. This transfer passage is for transferring the chemical heat storage reactor between the heat supply chamber and the heat receiving chamber. This prevents the amount of heat stored in the chemical heat storage material in the chemical heat storage reactor being transferred from being dissipated to the outside. Therefore, also in the configuration according to the eighth aspect, the same function and effect as that of the sixth aspect can be further achieved.

  Moreover, according to the structure of the said Claim 9, the heat supply chamber, the heat receiving chamber, and the transfer passage may each be equipped with the pressure-reduction mechanism for maintaining an inside in a pressure-reduced state. Alternatively, only the heat supply chamber and the heat receiving chamber may include a pressure reducing mechanism. Alternatively, only the transfer passage may include a pressure reducing mechanism. The heat exchange efficiency of the chemical heat storage material is improved by the action of the decompression mechanism. Therefore, also in the configuration according to the ninth aspect, the same effect as that of the seventh or eighth aspect can be further achieved.

  Moreover, according to the structure of the said Claim 10, the heat supply chamber may be equipped with the heat supply preparation chamber sealed from the external environment. On the other hand, the heat receiving chamber may include a heat receiving preparation chamber sealed from the external environment. Each of the heat supply chamber and the heat reception chamber includes an open / close door for delivering the chemical heat storage reactor to / from the heat supply preparation chamber or the heat reception preparation chamber. Furthermore, each of the heat supply preparation chamber and the heat reception preparation chamber includes another open / close door for accommodating the chemical heat storage reactor from the outside environment. This reduces the amount of heat dissipated to the external environment in heat exchange between the chemical heat storage reactor and the heat supply facility or heat demand facility. Therefore, also in the structure of the said Claim 10, the effect similar to Claim 6 can be achieved further.

  Moreover, according to the structure of the said 11th aspect, the heat supply chamber may be equipped with the heat supply preparation chamber sealed from the external environment. On the other hand, the heat receiving chamber may include a heat receiving preparation chamber sealed from the external environment. Moreover, the heat supply preparation chamber and the heat reception preparation chamber may include a transfer forward path and a transfer return path sealed from the external environment. The transfer forward path and the transfer return path are for transferring the chemical heat storage reactor between the heat supply preparation chamber and the heat reception preparation chamber. Each of the heat supply chamber and the heat receiving chamber includes an open / close door for delivering the chemical heat storage reactor between the heat supply preparing chamber and the heat receiving preparing chamber. Furthermore, each of the heat supply preparation chamber and the heat reception preparation chamber is provided with an open / close door for delivering the chemical heat storage reactor between the transfer forward path and the transfer return path. This prevents the amount of heat stored in the chemical heat storage material in the chemical heat storage reactor being transferred from being dissipated to the outside. Therefore, also in the structure of the said 11th aspect, the effect similar to Claim 6 can be achieved further.

  Further, according to the configuration of claim 12, the heat supply chamber, the heat reception chamber, the heat supply preparation chamber, the heat reception preparation chamber, the transfer forward path, and the transfer return path are each decompressed to maintain a reduced pressure inside. A mechanism may be provided. Alternatively, only the heat supply chamber and the heat receiving chamber may include a pressure reducing mechanism. Alternatively, only the heat supply preparation chamber and the heat reception preparation chamber may include a pressure reducing mechanism. Alternatively, only the transfer forward path and the transfer return path may include a pressure reducing mechanism. The heat exchange efficiency of the chemical heat storage material is improved by the action of the decompression mechanism. Therefore, also in the structure of the said Claim 12, the effect similar to Claim 10 or 11 can be achieved further.

It is the schematic which shows the structure of the chemical thermal storage reactor which concerns on this invention. (A) is the cross-sectional view seen from the upper surface direction, (B) is the longitudinal cross-sectional view seen from the front direction. It is the longitudinal cross-sectional view seen from the front direction which shows the state with which the chemical thermal storage reactor of FIG. It is a composition schematic diagram of the heat transportation system in a 1st embodiment. It is a composition schematic diagram of the heat transportation system in a 2nd embodiment. It is a block schematic diagram of the heat transport system in 3rd Embodiment. It is a block schematic diagram of the heat transport system in 4th Embodiment.

  In the present invention, the heat supply facility includes a facility, an apparatus, a facility, or the like that releases heat to the chemical heat storage reactor to supply heat. In addition, the heat demand facility includes a facility, an apparatus, a facility, or the like that receives a supply of heat from a chemical heat storage reactor and performs heat demand.

  In the present invention, the chemical heat storage material is not particularly limited, and includes all substances that store heat energy in the form of a chemical reaction such as heat of adsorption / desorption, heat of fusion, and heat of dilution. In the present invention, as a temporary name in the chemical reaction, the endothermic reaction of the chemical heat storage material is called a normal reaction, and the exothermic reaction of the chemical heat storage material is called a reverse reaction. In the present invention, among these substances, in particular, endothermic and exothermic reactions are caused by dehydration reaction (referred to as “forward reaction” in the present invention) and hydration reaction (referred to as “reverse reaction” in the present invention). It is preferred to use the resulting material.

Examples of these are calcium hydroxide-based heat storage material (reaction of CaO and Ca (OH) ₂ ), barium hydroxide-based heat storage material (reaction of BaO and Ba (OH) ₂ ), magnesium hydroxide-based heat storage material (MgO Reaction of alkaline earth metal oxides and hydroxides such as Mg (OH) ₂ ), nickel hydroxide heat storage materials (reaction of NiO and Ni (OH) ₂ ), cobalt hydroxide (II ) Heat storage material (reaction of CoO and Co (OH) ₂ ), cobalt hydroxide (III) heat storage material (reaction of Co ₂ O ₃ and Co (OH) ₃ ), copper hydroxide (II) heat storage material ( Reaction of transition metal oxides and hydroxides such as reaction of CuO and Cu (OH) ₂ , and typical metals such as aluminum hydroxide heat storage material (reaction of Al ₂ O ₃ and Al (OH) ₃ ) And the reaction of the oxide and hydroxide. Any one of these reactions may be employed, or a combination of two or more may be employed.

Among these reactions, the calcium hydroxide heat storage material (reaction of CaO and Ca (OH) ₂ ) can stably perform repeated operations of heat storage and heat dissipation in a high temperature range exceeding 400 ° C. It is suitable as a chemical heat storage material in the invention. On the other hand, since the magnesium-based heat storage material (reaction of MgO and Mg (OH) ₂ ) can store and release heat at a lower temperature than the calcium-based heat storage material, this heat storage material is also suitable as the chemical heat storage material in the present invention. It is.

  Moreover, in this invention, it does not specifically limit about the composition of a chemical heat storage material, It may consist only of said each chemical heat storage material, or the composite_body | complex of a chemical heat storage material and another component may be sufficient. Here, as other components, for example, clay minerals such as sepiolite, palygorskite and bentonite, layered double hydroxides such as hydrotalcite and hydrocalumite, heat transfer material having a hydroxyl group or oxide film on the surface, clay , Carbon, copper (Cu), and the like, and a cage-like substance having voids that can hold a chemical heat storage material therein, and combinations of the above substances.

  Further, in the present invention, the structure and shape of the chemical heat storage material are not particularly limited, and a powder obtained by press molding the powder containing each chemical heat storage material, a powder containing the chemical heat storage material, or It may be a porous sintered body obtained by heating the molded body and partially sintering the particles.

  In addition, in the present invention, a substance that is indirectly in contact with a chemical heat storage material via a heat exchanger to transfer heat, a so-called heat medium is not used. That is, in the present invention, substances such as various silicone oils, saturated hydrocarbon oils such as liquid paraffin, aromatic hydrocarbon oils such as halogenated biphenyl, and aqueous glycol solutions are not used as the heat medium. Moreover, the heat exchanger used for these heat media is not used. As a result, the volume and weight of the heat medium and the heat exchanger for the heat medium in the heat storage container can be reduced, and the chemical heat storage reactor can be reduced in size and weight.

  Hereinafter, each embodiment of a chemical heat storage reactor and a heat transport system using the same according to the present invention will be described with reference to the drawings. In addition, this invention is not limited to each embodiment shown below.

  FIG. 1 is a schematic diagram showing the configuration of a chemical heat storage reactor according to the present invention. FIG. 1A is a cross-sectional view of the chemical heat storage reactor as viewed from the top surface, and FIG. 1B is a vertical cross-sectional view of the chemical heat storage reactor as viewed from the front. In FIG. 1, the chemical heat storage reactor 10 includes a heat storage container 11, a chemical heat storage material 12, and a fluid flow path 13. The material and shape of the heat storage container 11 are not particularly limited, but in the present embodiment, as shown in FIG. 1, it is a rectangular body having an outer wall made of a heat insulating material. Further, on the top and bottom surfaces of the heat storage container 11, an opening 11a for introducing and deriving a fluid 13a (heat supply fluid / heat reception fluid) for exchanging heat in contact with the chemical heat storage material 12 accommodated therein. , 11b. The openings 11a and 11b may be in a released state, or may be covered with a mesh or a perforated plate through which the fluid 13a (heat supply fluid / heat reception fluid) can pass.

  Although the structure and shape of the chemical heat storage material 12 are not particularly limited, in the present embodiment, as shown in FIG. 1, a molded body obtained by press-molding a powder containing the chemical heat storage material is heated to form particles. A plurality of porous plate-like sintered bodies that are partially sintered are employed.

In the present embodiment, a calcium hydroxide heat storage material is employed as the chemical heat storage material 12 in order to effectively use high-temperature waste heat (heat supply fluid) exceeding 400 ° C. released by the heat supply equipment. In the calcium hydroxide-based heat storage material, calcium hydroxide (Ca (OH) ₂ ) changes to calcium oxide (CaO) by a dehydration reaction when supplied with the heat quantity Q of the heat supply fluid. This reaction is an endothermic reaction, and the following formula (1),
Ca (OH) ₂ → CaO + H ₂ O: ΔH = −63.6 kJ / mol (1)
As shown in Figure 3, it appears as a heat storage effect.

On the other hand, when calcium oxide (CaO) is supplied with water, it becomes calcium hydroxide (Ca (OH) ₂ ) by a hydration reaction. This reaction is an exothermic reaction, and the following formula (2),
CaO + H ₂ O → Ca (OH) ₂ : ΔH = + 63.6 kJ / mol (2)
As shown in FIG.

  Thus, in this embodiment, by adopting a calcium hydroxide heat storage material, high-temperature waste heat can be efficiently stored and used reversibly.

  Here, when adopting a calcium hydroxide heat storage material, water is involved as a dehydration reaction and a hydration reaction (see the above formulas (1) and (2)). In the present embodiment, a water vapor sorption / desorption method is adopted in which the structure of the apparatus is relatively simple and water can be supplied to or removed from the chemical heat storage material 12 uniformly. In this method, water generated in the dehydration reaction is removed from the chemical heat storage material 12 as water vapor. On the other hand, reaction water required for the hydration reaction is supplied to the chemical heat storage material 12 as water vapor. In the present embodiment, water vapor containing the reaction water is supplied as a heat receiving fluid (described later).

  In the fluid flow path 13, the fluid 13 a (heat supply fluid / heat reception fluid) introduced from the upper surface opening 11 a of the heat storage container 11 contacts the chemical heat storage material 12 accommodated in the heat storage container 11 to exchange heat. The heat exchange fluid 13b (heat supply fluid / heat reception fluid) is led out from the bottom opening 11b of the heat storage container 11. In FIG. 1B, the flow of the fluids 13a and 13b (heat supply fluid / heat reception fluid) is indicated by arrows. In FIG. 1, a plurality of fluid flow paths 13 are alternately arranged with a plurality of chemical heat storage materials 12 to ensure a large contact area between the chemical heat storage materials 12 and the fluid 13a (heat supply fluid / heat reception fluid). Yes. Further, in the present embodiment, as shown in FIG. 1, a heat receiving heat radiating plate 13c for improving the efficiency of heat exchange between the chemical heat storage material 12 and the fluid 13a (heat supply fluid / heat receiving fluid) is provided as a fluid flow path. 13 along the line.

  Next, FIG. 2 is a front sectional view showing a state in which the chemical heat storage reactor of FIG. 1 includes a lid. In FIG. 2, the chemical heat storage reactor 20 includes two lids 24 a and 24 b that seal the inside of the heat storage container 21 from the external environment at two openings 21 a and 21 b provided on the top and bottom surfaces of the heat storage container 21. Yes. These lids 24 a and 24 b are made of a heat insulating material in the same manner as the outer wall of the heat storage container 21. These lids 24a and 24b are released in the heat storage process to the chemical heat storage reactor 20, and are closed in the transfer process of the stored chemical heat storage reactor 20. Since the chemical heat storage reactor 20 includes the lids 24a and 24b, heat transport with less heat loss is possible even in an external environment other than the sealed transfer passage.

  On the other hand, the structure and structure of other parts of the chemical heat storage reactor 20 are the same as those of the chemical heat storage reactor 10 shown in FIG. 1, and include a heat storage container 21, a chemical heat storage material 22, and a fluid flow path 23. . The heat storage container 21 is a rectangular body having an outer wall made of a heat insulating material. Moreover, the structure and shape of the chemical heat storage material 22, the fluid flow path 23, and the heat receiving heat sink 23c are the same as those of the chemical heat storage reactor 10 shown in FIG.

First embodiment:
This 1st Embodiment is related with the heat transport system using the chemical thermal storage reactor 10 shown in FIG. FIG. 3 is a schematic configuration diagram of the heat transport system in the first embodiment. In FIG. 3, the heat transport system 50 generates waste heat (heat quantity Q of the heat supply fluid 32) at a high temperature exceeding 400 ° C. (in this first embodiment, 426 ° C.) released by the heat supply facility 30. Heat is stored in the chemical heat storage reactor 10, the chemical heat storage reactor 10 is transferred to the heat demand facility 40, and the stored heat quantity Q is radiated and supplied to the heat demand facility 40. In the first embodiment, assuming that the distance between the heat supply facility 30 and the heat demand facility 40 is relatively short, a transfer passage 51 (described later) is adopted for transferring the chemical heat storage reactor 10.

  In FIG. 3, the heat supply facility 30 includes a heat supply chamber 31 for supplying the chemical heat storage reactor 10 with the amount of heat Q released from the heat supply facility 30 and storing the heat. On the other hand, the heat demand facility 40 includes a heat receiving chamber 41 for supplying the heat demand facility 40 with the amount of heat Q released from the chemical heat storage reactor 10. The heat supply chamber 31 and the heat receiving chamber 41 are sealed from the external environment, and the chemical heat storage reactor 10 is detachably installed therein. In addition, the heat receiving chamber 41 generates steam to supply a heat receiving fluid 42 (described later) containing reaction water for causing a hydration reaction of the chemical heat storage material 12 accommodated in the chemical heat storage reactor 10 in a steam state. A device 43 is provided.

  In FIG. 3, a transfer passage 51 is provided between the heat supply chamber 31 and the heat receiving chamber 41 to communicate these. The transfer passage 51 is independent of the heat supply chamber 31 and the heat receiving chamber 41 and is sealed from the external environment. The chemical heat storage reactor 10 is transferred between the heat supply chamber 31 and the heat receiving chamber 41 through the inside of the transfer passage 51. An opening / closing door 31 a for carrying in and out the chemical heat storage reactor 10 is provided between the heat supply chamber 31 and the transfer passage 51. On the other hand, between the heat receiving chamber 41 and the transfer passage 51, an open / close door 41a for carrying in and out the chemical heat storage reactor 10 is provided. The open / close mechanisms of the open / close doors 31a and 41a may adopt a drive type or a manual type. In addition, the transfer passage 51 includes a vacuum pipe 52 and a vacuum pump VP (not shown) for reducing the inside of the transfer passage 51. Note that the vacuum pipe 52 is provided with a vacuum valve 52a that blocks between the transfer passage 51 and the vacuum pump VP.

  In such a configuration, in the heat transport system according to the first embodiment, the step of carrying the chemical heat storage reactor 10 into the heat supply chamber 31 from the transfer passage 51 (step 1), the amount of heat generated from the heat supply facility 30. A step of storing Q in the chemical heat storage reactor 10 carried into the heat supply chamber 31 (step 2), a step of transporting the chemical heat storage reactor 10 after heat storage from the heat supply chamber 31 to the transfer passage 51 (step 3), The step of transferring the chemical heat storage reactor 10 after heat storage through the transfer passage 51 (step 4), the step of carrying the chemical heat storage reactor 10 after transfer from the transfer passage 51 into the heat receiving chamber 41 (step 5), A process of dissipating the amount of heat Q from the chemical heat storage reactor 10 and supplying it to the heat demand facility 40 (step 6), and a process of transporting the chemical heat storage reactor 10 after heat dissipation from the heat receiving chamber 41 to the transfer passage 51 (step Flop 7), and repeats the cycle of the process of the process of transferring (Step 8) The chemical heat reactor 10 after the heat radiation by the transfer passage 51. In addition, FIG. 3 has shown the state in which the heat storage process of step 2 is advancing. Hereinafter, these steps will be described with reference to FIG.

≪Initial state≫
In the initial state, the chemical heat storage reactor 10 before heat storage (after heat dissipation) is located on the heat supply chamber 31 side inside the transfer passage 51. The open / close door 31a of the heat supply chamber 31 and the open / close door 41a of the heat receiving chamber 41 are closed. The vacuum valve 52a of the vacuum pipe 52 is closed, and the inside of the transfer passage 51 is in a reduced pressure state. The supply of the heat supply fluid 32 to the heat supply chamber 31 and the supply of the heat reception fluid 42 to the heat reception chamber 41 are stopped. In this state, the cycle consisting of steps 1 to 8 is repeated.

≪Step 1≫
Step 1 is a process of carrying the initial chemical heat storage reactor 10 into the heat supply chamber 31 from the transfer passage 51. First, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 10 in the transfer passage 51 is carried into the heat supply chamber 31. The method for bringing the chemical heat storage reactor 10 into the heat supply chamber 31 from the transfer passage 51 is not particularly limited, and a drive-type carry-in mechanism or manual carry-in may be adopted. Good. After carrying in the chemical heat storage reactor 10, the door 31a is closed. In this state, the chemical heat storage reactor 10 before heat storage is installed at a fixed position in the heat supply chamber 31.

≪Step 2≫
Step 2 is a step of storing heat quantity Q generated from the heat supply facility 30 in the chemical heat storage reactor 10 carried into the heat supply chamber 31. In this heat storage process, the chemical heat storage reactor 10 is carried into the heat supply chamber 31 and installed at a fixed position, and the open / close door 31a of the heat supply chamber 31 is closed. Further, the chemical heat storage reactor 10 does not have a lid on the openings 11a and 11b, and the openings 11a and 11b are in a released state.

  In this state, the heat supply fluid 32 is supplied from the heat supply facility 30 toward the heat supply chamber 31. In the first embodiment, the heat supply fluid 32 supplied to the heat supply chamber 31 is 426 ° C. high-temperature air that does not contain carbon dioxide and has a heat quantity Q. The heat supply fluid 32 is introduced into the fluid flow path 13 from the opening 11 a of the heat storage container 11. The heat supply fluid 32 passing through the fluid flow path 13 efficiently contacts the chemical heat storage material 12 and the surfaces of the heat receiving and radiating plate 13c to exchange heat. By this heat exchange, a dehydration reaction of the chemical heat storage material 12 occurs, and the heat quantity Q of the heat supply fluid 32 is stored in the chemical heat storage material 12.

At this time, the heat supply fluid 32 introduced into the fluid flow path 13 gives the heat quantity Q to the chemical heat storage material 12 to become low-temperature air, and the opening 11b of the heat storage container 11 with water vapor generated by the dehydration reaction. Is derived from Here, it is preferable to provide an exhaust facility (not shown) for removing water vapor generated by the dehydration reaction from the inside of the heat supply chamber 31. Thus, when the chemical heat storage material 12 of the chemical heat storage reactor 10 completes the dehydration reaction, the calcium hydroxide (Ca (OH) ₂ ) of the chemical heat storage material 12 is changed to calcium oxide (CaO). 2 ends.

≪Step 3≫
Step 3 is a process of carrying out the chemical heat storage reactor 10 after heat storage from the heat supply chamber 31 to the transfer passage 51. First, after the heat storage process (step 2) is completed, the supply of the heat supply fluid 32 from the heat supply facility 30 to the heat supply chamber 31 is stopped. Next, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 10 in the heat supply chamber 31 is carried out to the transfer passage 51. The method for carrying out the chemical heat storage reactor 10 from the heat supply chamber 31 to the transfer passage 51 is not particularly limited, and a drive-type carry-out mechanism or manual carry-out may be adopted. Good. After unloading the chemical heat storage reactor 10, the open / close door 31a is closed. In this state, the chemical heat storage reactor 10 after heat storage is located on the heat supply chamber 31 side inside the transfer passage 51.

≪Step 4≫
Step 4 is a process of transferring the chemical heat storage reactor 10 after heat storage through the transfer passage 51. First, the vacuum pump VP provided in the transfer passage 51 is operated, the vacuum valve 52a of the vacuum pipe 52 is opened, and the inside of the transfer passage 51 is decompressed. In the first embodiment, the openings 11a and 11b of the chemical heat storage reactor 10 are open and have no lid, but by operating the vacuum pump VP to reduce the pressure inside the transfer passage 51. In addition, the air inside the chemical heat storage reactor 10 and the water vapor generated by the dehydration reaction are efficiently eliminated, and the amount of heat Q stored from the chemical heat storage reactor 10 being transferred can be prevented from being dissipated.

  The vacuum valve 52a is closed and the vacuum pump VP is stopped when the inside of the transfer passage 51 reaches the set pressure reduction level. Next, the chemical heat storage reactor 10 is transferred from the heat supply chamber 31 side to the heat receiving chamber 41 side inside the transfer passage 51. The method for transferring the chemical heat storage reactor 10 inside the transfer passage 51 is not particularly limited, and a drive-type transfer mechanism may be adopted or manual transfer may be adopted. In the state after the transfer, the chemical heat storage reactor 10 after the heat storage is located inside the transfer passage 51 on the heat receiving chamber 41 side.

≪Step 5≫
Step 5 is a step of carrying the transferred chemical heat storage reactor 10 into the heat receiving chamber 41 from the transfer passage 51. First, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 10 in the transfer passage 51 is carried into the heat receiving chamber 41. The method for carrying the chemical heat storage reactor 10 from the transfer passage 51 into the heat receiving chamber 41 is the same as in Step 1 above. After carrying in the chemical heat storage reactor 10, the open / close door 41a is closed. In this state, the chemical heat storage reactor 10 after heat storage is installed at a fixed position in the heat receiving chamber 41.

≪Step 6≫
Step 6 is a process of dissipating the heat quantity Q from the chemical heat storage reactor 10 after heat storage and supplying it to the heat demand facility 40. In this heat radiation process, the chemical heat storage reactor 10 carried into the heat receiving chamber 41 is installed at a fixed position of the heat receiving chamber 41, and the open / close door 41a of the heat receiving chamber 41 is closed. Further, the chemical heat storage reactor 10 does not have a lid on the openings 11a and 11b, and the openings 11a and 11b are in a released state.

  In this state, the heat receiving fluid 42 is supplied from the water vapor generating device 43 toward the heat receiving chamber 41. In the first embodiment, the heat receiving fluid 42 is low-temperature water vapor that is lower than the heat generation temperature of the chemical heat storage material 12. The heat receiving fluid 42 is introduced into the fluid flow path 13 from the opening 11 a of the heat storage container 11. The heat receiving fluid 42 passing through the fluid flow path 13 efficiently contacts the surface of the chemical heat storage material 12 to cause a hydration reaction. Due to this hydration reaction, heat is released from the chemical heat storage material 12, and the amount of heat Q stored in the chemical heat storage material 12 is released.

  Here, the heat receiving fluid 42 released from the water vapor generating device 43 contains excess water exceeding the amount of reaction water necessary for the hydration reaction of the chemical heat storage material 12. Accordingly, the heat receiving fluid 42 introduced into the fluid flow path 13 gives the chemical heat storage material 12 with an amount of water necessary for the hydration reaction, and is derived from the opening 11b of the heat storage container 11 as water vapor corresponding to excess water. The

At this time, the water vapor corresponding to the excess water efficiently contacts the heat radiating chemical heat storage material 12 and the heat receiving heat radiating plate 13c, absorbs the amount of heat Q radiated by the hydration reaction of the chemical heat storage material 12, and has a high temperature. It becomes the heat receiving fluid 42a. This high-temperature heat receiving fluid 42 a is led out from the opening 11 b of the heat storage container 11 and supplied to the heat demand facility 40 for use. Thus, when the chemical heat storage material 12 of the chemical heat storage reactor 10 completes the hydration reaction, the calcium oxide (CaO) of the chemical heat storage material 12 changes to calcium hydroxide (Ca (OH) ₂ ). Step 6 ends.

≪Step 7≫
Step 7 is a step of carrying out the chemical heat storage reactor 10 after heat radiation from the heat receiving chamber 41 to the transfer passage 51. First, after the heat radiation step (step 6) is completed, the supply of the heat receiving fluid 42 from the water vapor generating device 43 to the heat receiving chamber 41 is stopped. Next, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 10 in the heat receiving chamber 41 is carried out to the transfer passage 51. The method for carrying out the chemical heat storage reactor 10 from the heat receiving chamber 41 to the transfer passage 51 is the same as in Step 3 above. After carrying out the chemical heat storage reactor 10, the open / close door 41a is closed. In this state, the chemical heat storage reactor 10 after heat radiation is located on the heat receiving chamber 41 side inside the transfer passage 51.

≪Step 8≫
Step 8 is a process of transferring the chemical heat storage reactor 10 after heat dissipation through the transfer passage 51. In step 8, the same operation as in step 4 is performed. Also in this step 8, it is preferable to operate the vacuum pump VP to reduce the pressure inside the transfer passage 51. By operating the vacuum pump VP to bring the inside of the transfer passage 51 into a reduced pressure state, water vapor (a part of the heat receiving fluid 42) inside the chemical heat storage reactor 10 can be efficiently removed. In the state after the transfer, the chemical heat storage reactor 10 after the heat release is located on the heat supply chamber 31 side inside the transfer passage 51 and corresponds to the initial state.

  In this way, by repeating the cycle consisting of the above steps 1 to 8, it is possible to realize efficient heat transport while suppressing transportation costs.

Second embodiment:
Next, a second embodiment of the heat transport system according to the present invention will be described. This 2nd Embodiment utilizes the chemical thermal storage reactor 10 shown in FIG. 1 similarly to the said 1st Embodiment. FIG. 4 is a schematic configuration diagram of a heat transport system according to the second embodiment. In FIG. 4, as in the first embodiment, the heat transport system 60 supplies the chemical heat storage reactor 10 with high-temperature waste heat (heat quantity Q of the heat supply fluid) exceeding 400 ° C. released by the heat supply facility 30. Heat is stored, the chemical heat storage reactor 10 is transferred to the heat demand facility 40, and the stored heat quantity Q is radiated and supplied to the heat demand facility 40. In the second embodiment, similarly to the first embodiment, assuming that the distance between the heat supply facility 30 and the heat demand facility 40 is relatively short, the transfer forward path 61 is transferred to the transfer of the chemical heat storage reactor 10. In addition, a transfer return path 62 (described later) is employed.

  In FIG. 4, the heat supply facility 30 includes a heat supply chamber 31 for supplying the chemical heat storage reactor 10 with the amount of heat Q released from the heat supply facility 30 and storing the heat. On the other hand, the heat demand facility 40 includes a heat receiving chamber 41 for supplying the heat demand facility 40 with the amount of heat Q released from the chemical heat storage reactor 10. The heat supply chamber 31 and the heat receiving chamber 41 are sealed from the external environment, and the chemical heat storage reactor 10 is detachably installed therein. Further, the heat receiving chamber 41 includes a water vapor generating device 43 that supplies a heat receiving fluid 42 including reaction water for causing a hydration reaction of the chemical heat storage material 12 accommodated in the chemical heat storage reactor 10 in a steam state. ing.

  In FIG. 4, the heat supply chamber 31 includes a heat supply preparation chamber 63 as a preparation chamber for carrying the chemical heat storage reactor 10 into the heat supply chamber 31. On the other hand, the heat receiving chamber 41 includes a heat receiving preparation chamber 65 as a preparation chamber for carrying the chemical heat storage reactor 10 into the heat receiving chamber 41. The heat supply preparation chamber 63 and the heat reception preparation chamber 65 are independent from the heat supply chamber 31 and the heat reception chamber 41, respectively, and are sealed from the external environment.

  In FIG. 4, between the heat supply preparation chamber 63 and the heat reception preparation chamber 65, a transfer forward path 61 and a transfer return path 62 are provided as two transfer paths that communicate with each other. The transfer forward path 61 and the transfer return path 62 are independent from the heat supply preparation chamber 63 and the heat reception preparation chamber 65, respectively, and are sealed from the external environment. The chemical heat storage reactor 10 after heat storage is transferred from the heat supply preparation chamber 63 toward the heat reception preparation chamber 65 through the inside of the transfer forward path 61. On the other hand, the chemical heat storage reactor 10 after heat radiation is transferred from the heat receiving preparation chamber 65 toward the heat supply preparation chamber 63 through the inside of the transfer return path 62.

  Between the heat supply chamber 31 and the heat supply preparation chamber 63, an open / close door 31a for carrying the chemical heat storage reactor 10 in and out is provided. Further, an open / close door 63 a for carrying in and out the chemical heat storage reactor 10 is provided between the heat supply preparation chamber 63 and the transfer forward path 61. In addition, an open / close door 63 b for carrying in and out the chemical heat storage reactor 10 is provided between the heat supply preparation chamber 63 and the transfer return path 62. The open / close mechanisms of the open / close doors 31a, 63a, 63b may adopt a drive type or a manual type. The heat supply preparation chamber 63 is provided with a vacuum pipe 64 and a vacuum pump VP (not shown) for reducing the pressure inside the heat supply preparation chamber 63. The vacuum pipe 64 is provided with a vacuum valve 64a that shuts off the heat supply preparation chamber 63 and the vacuum pump VP.

  On the other hand, an open / close door 41 a for carrying in and out the chemical heat storage reactor 10 is provided between the heat receiving chamber 41 and the heat receiving preparation chamber 65. In addition, an open / close door 65 a for carrying the chemical heat storage reactor 10 in and out is provided between the heat reception preparation chamber 65 and the transfer forward path 61. In addition, an open / close door 65 b for carrying in and out the chemical heat storage reactor 10 is provided between the heat reception preparation chamber 65 and the transfer return path 62. The open / close mechanisms of the open / close doors 41a, 65a, 65b may adopt a drive type or a manual type. The heat reception preparation chamber 65 includes a vacuum pipe 66 and a vacuum pump VP (not shown) for reducing the pressure inside the heat reception preparation chamber 65. The vacuum pipe 66 is provided with a vacuum valve 66a that shuts off the heat receiving preparation chamber 65 and the vacuum pump VP.

  In such a configuration, in the heat transport system according to the second embodiment, a step of carrying the chemical heat storage reactor 10 from the transfer return path 62 into the heat supply preparation chamber 63 (step 11), and the chemical heat storage reactor 10 being heated. A step of carrying in the heat supply chamber 31 from the supply preparation chamber 63 (step 12), a step of storing heat quantity Q generated from the heat supply facility 30 in the chemical heat storage reactor 10 carried into the heat supply chamber 31 (step 13), Step of carrying out chemical heat storage reactor 10 after heat storage from heat supply chamber 31 to heat supply preparation chamber 63 (step 14), step of carrying out chemical heat storage reactor 10 after heat storage from heat supply preparation chamber 63 to transfer forward path 61 (Step 15), the step of transferring the chemical heat storage reactor 10 after heat storage through the transfer forward path 61 (Step 16), the chemical heat storage reactor 10 after transfer from the transfer forward path 61 to the heat receiving preparation chamber 65 The step of carrying in (step 17), the step of carrying in the chemical heat storage reactor 10 after heat storage into the heat receiving chamber 41 from the heat receiving preparation chamber 65 (step 18), and releasing the amount of heat Q from the chemical heat storage reactor 10 after heat storage. Supplying the heat demanding equipment 40 to the heat demanding facility 40 (step 19), carrying out the chemical heat storage reactor 10 after heat dissipation from the heat receiving chamber 41 to the heat receiving preparation chamber 65 (step 20), and chemical heat storing reactor 10 after heat dissipation. Is repeated from the heat receiving preparation chamber 65 to the transfer return path 62 (step 21) and the process of transferring the heat release chemical heat storage reactor 10 by the transfer return path 62 (step 22). FIG. 4 shows a state in which the heat storage process of step 13 and the heat dissipation process of step 19 are simultaneously proceeding. Hereinafter, these steps will be described with reference to FIG.

≪Initial state≫
In the initial state, a plurality of chemical heat storage reactors 10 before heat storage (after heat radiation) exist in the transfer return path 62. Further, a plurality of chemical heat storage reactors 10 after heat storage exist in the transfer forward path 61. On the other hand, the heat supply chamber 31, the heat supply preparation chamber 63, the heat reception chamber 41, and the heat reception preparation chamber 65 are vacant. The open / close door 31a of the heat supply chamber 31 and the open / close doors 63a and 63b of the heat supply preparation chamber 63 are closed. The open / close door 41a of the heat receiving chamber 41 and the open / close doors 65a and 65b of the heat receiving preparation chamber 65 are closed. The vacuum valves 64a and 66a of the vacuum pipes 64 and 66 are closed, and the insides of the heat supply preparation chamber 63, the transfer forward path 61, the transfer return path 62, and the heat reception preparation chamber 65 are in a reduced pressure state. The supply of the heat supply fluid 32 to the heat supply chamber 31 and the supply of the heat reception fluid 42 to the heat reception chamber 41 are stopped. In this state, the cycle consisting of steps 11 to 22 is repeated.

<< Step 11 >>
Step 11 is a process of carrying the initial chemical heat storage reactor 10 from the transfer return path 62 into the heat supply preparation chamber 63. First, the open / close door 63 b of the heat supply preparation chamber 63 is opened, and the chemical heat storage reactor 10 at the head in the transfer return path 62 is carried into the heat supply preparation chamber 63. The method for carrying the chemical heat storage reactor 10 from the transfer return path 62 to the heat supply preparation chamber 63 is not particularly limited, and a drive-type carry-in mechanism may be adopted or manual carry-in may be adopted. Also good. After carrying in the chemical heat storage reactor 10, the open / close door 63b is closed. In this state, the chemical heat storage reactor 10 before heat storage is located in the heat supply preparation chamber 63.

<< Step 12 >>
Step 12 is a process of carrying the chemical heat storage reactor 10 from the heat supply preparation chamber 63 into the heat supply chamber 31. First, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 10 in the heat supply preparation chamber 63 is carried into the heat supply chamber 31. The method for carrying the chemical heat storage reactor 10 from the heat supply preparation chamber 63 to the heat supply chamber 31 is not particularly limited, and a drive-type carry-in mechanism may be adopted or manual carry-in is adopted. May be. After carrying in the chemical heat storage reactor 10, the door 31a is closed. In this state, the chemical heat storage reactor 10 before heat storage is installed at a fixed position in the heat supply chamber 31.

<< Step 13 >>
Step 13 is a step of storing heat quantity Q generated from the heat supply facility 30 in the chemical heat storage reactor 10 carried into the heat supply chamber 31. In this heat storage process, the chemical heat storage reactor 10 is carried into the heat supply chamber 31 and installed at a fixed position, and the open / close door 31a of the heat supply chamber 31 is closed. Further, the chemical heat storage reactor 10 does not have a lid on the openings 11a and 11b, and the openings 11a and 11b are in a released state.

  In this state, the heat supply fluid 32 is supplied from the heat supply facility 30 toward the heat supply chamber 31. The heat supply fluid 32 supplied to the heat supply chamber 31 is 426 ° C. high-temperature air that does not contain carbon dioxide and has a heat quantity Q, as in the first embodiment. The heat supply fluid 32 is introduced into the fluid flow path 13 from the opening 11 a of the heat storage container 11. The heat supply fluid 32 passing through the fluid flow path 13 efficiently contacts the chemical heat storage material 12 and the surfaces of the heat receiving and radiating plate 13c to exchange heat. By this heat exchange, a dehydration reaction of the chemical heat storage material 12 occurs, and the heat quantity Q of the heat supply fluid 32 is stored in the chemical heat storage material 12.

At this time, the heat supply fluid 32 introduced into the fluid flow path 13 gives the heat quantity Q to the chemical heat storage material 12 to become low-temperature air, and the opening 11b of the heat storage container 11 with water vapor generated by the dehydration reaction. Is derived from Here, it is preferable to provide an exhaust facility (not shown) for removing water vapor generated by the dehydration reaction from the inside of the heat supply chamber 31. Thus, when the chemical heat storage material 12 of the chemical heat storage reactor 10 completes the dehydration reaction, the calcium hydroxide (Ca (OH) ₂ ) of the chemical heat storage material 12 is changed to calcium oxide (CaO). 13 ends.

<< Step 14 >>
Step 14 is a step of carrying out the chemical heat storage reactor 10 after heat storage from the heat supply chamber 31 to the heat supply preparation chamber 63. First, after the heat storage process (step 13) is completed, the supply of the heat supply fluid 32 from the heat supply facility 30 to the heat supply chamber 31 is stopped. Next, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 10 in the heat supply chamber 31 is carried out to the heat supply preparation chamber 63. At this time, the open / close doors 63a and 63b of the heat supply preparation chamber 63 are closed. The method for carrying out the chemical heat storage reactor 10 from the heat supply chamber 31 to the heat supply preparation chamber 63 is not particularly limited, and a drive-type carry-out mechanism may be adopted or manual carry-out is adopted. May be. After unloading the chemical heat storage reactor 10, the open / close door 31a is closed.

  Next, the vacuum pump VP provided in the heat supply preparation chamber 63 is operated, the vacuum valve 64a of the vacuum pipe 64 is opened, and the inside of the heat supply preparation chamber 63 is decompressed. In the second embodiment, the openings 11a and 11b of the chemical heat storage reactor 10 are open and do not have a lid, but the vacuum pump VP is operated to bring the inside of the heat supply preparation chamber 63 into a reduced pressure state. By this, the air inside the chemical heat storage reactor 10 and the water vapor generated by the dehydration reaction are efficiently eliminated, and it is possible to prevent the heat quantity Q stored from the chemical heat storage reactor 10 from being dissipated in the subsequent transfer step. .

  When the inside of the heat supply preparation chamber 63 reaches a set pressure reduction level, the vacuum valve 64a is closed and the vacuum pump VP is stopped. In this state, the chemical heat storage reactor 10 after heat storage is located inside the heat supply preparation chamber 63 in a reduced pressure state.

<< Step 15 >>
Step 15 is a step of carrying out the chemical heat storage reactor 10 after heat storage from the heat supply preparation chamber 63 to the transfer forward path 61. First, the open / close door 63 a of the heat supply preparation chamber 63 is opened, and the chemical heat storage reactor 10 in the heat supply preparation chamber 63 is carried out to the transfer forward path 61. The method for carrying out the chemical heat storage reactor 10 from the heat supply preparation chamber 63 to the transfer forward path 61 is not particularly limited, and a drive-type carry-out mechanism may be adopted or manual carry-out may be adopted. Also good. After unloading the chemical heat storage reactor 10, the open / close door 63a is closed. Note that the inside of the transfer forward path 61 is also in a reduced pressure state, and the amount of heat Q stored from the chemical heat storage reactor 10 can be prevented from being dissipated. In this state, the chemical heat storage reactor 10 after heat storage is located on the heat supply preparation chamber 63 side inside the transfer forward path 61.

<< Step 16 >>
Step 16 is a process of transferring the chemical heat storage reactor 10 after heat storage through the transfer forward path 61. In this state, a plurality of chemical heat storage reactors 10 after heat storage exist in the transfer forward path 61. In step 16, the plurality of chemical heat storage reactors 10 are sequentially transferred from the heat supply preparation chamber 63 side to the heat reception preparation chamber 65 side in the transfer forward path 61. The method for transferring the chemical heat storage reactor 10 inside the transfer forward path 61 is not particularly limited, and a drive type transfer mechanism may be adopted or manual transfer may be adopted. In the state after the transfer, the transfer is stopped when the first chemical heat storage reactor 10 among the plurality of chemical heat storage reactors 10 reaches the heat receiving preparation chamber 65.

<< Step 17 >>
Step 17 is a process of carrying the transferred chemical heat storage reactor 10 from the transfer forward path 61 into the heat receiving preparation chamber 65. First, the open / close door 65 a of the heat reception preparation chamber 65 is opened, and the chemical heat storage reactor 10 at the head in the transfer forward path 61 is carried into the heat reception preparation chamber 65. The method for carrying the chemical heat storage reactor 10 from the transfer forward path 61 into the heat receiving preparation chamber 65 is the same as in Step 11 above. After carrying in the chemical heat storage reactor 10, the open / close door 65a is closed. In this state, the chemical heat storage reactor 10 after heat storage is located in the heat receiving preparation chamber 65.

<< Step 18 >>
Step 18 is a step of carrying the chemical heat storage reactor 10 after heat storage into the heat receiving chamber 41 from the heat receiving preparation chamber 65. First, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 10 in the heat receiving preparation chamber 65 is carried into the heat receiving chamber 41. The method for carrying the chemical heat storage reactor 10 from the heat receiving preparation chamber 65 to the heat receiving chamber 41 is the same as in Step 12 above. After carrying in the chemical heat storage reactor 10, the open / close door 41a is closed. In this state, the chemical heat storage reactor 10 after heat storage is installed at a fixed position in the heat receiving chamber 41.

≪Step 19≫
Step 19 is a process of dissipating the heat quantity Q from the chemical heat storage reactor 10 after heat storage and supplying it to the heat demand facility 40. In this heat radiation process, the chemical heat storage reactor 10 carried into the heat receiving chamber 41 is installed at a fixed position of the heat receiving chamber 41, and the open / close door 41a of the heat receiving chamber 41 is closed. Further, the chemical heat storage reactor 10 does not have a lid on the openings 11a and 11b, and the openings 11a and 11b are in a released state.

  In this state, the heat receiving fluid 42 is supplied from the water vapor generating device 43 toward the heat receiving chamber 41. In the second embodiment, similar to the first embodiment, the heat receiving fluid 42 is low-temperature water vapor that is lower than the heat generation temperature of the chemical heat storage material 12. The heat receiving fluid 42 is introduced into the fluid flow path 13 from the opening 11 a of the heat storage container 11. The heat receiving fluid 42 passing through the fluid flow path 13 efficiently contacts the surface of the chemical heat storage material 12 to cause a hydration reaction. Due to this hydration reaction, heat is released from the chemical heat storage material 12, and the amount of heat Q stored in the chemical heat storage material 12 is released.

  Here, the heat receiving fluid 42 released from the water vapor generating device 43 contains excess water exceeding the amount of reaction water necessary for the hydration reaction of the chemical heat storage material 12. Accordingly, the heat receiving fluid 42 introduced into the fluid flow path 13 gives the chemical heat storage material 12 with an amount of water necessary for the hydration reaction, and is derived from the opening 11b of the heat storage container 11 as water vapor corresponding to excess water. The

At this time, the water vapor corresponding to the excess water efficiently contacts the heat radiating chemical heat storage material 12 and the heat receiving heat radiating plate 13c, absorbs the amount of heat Q radiated by the hydration reaction of the chemical heat storage material 12, and has a high temperature. It becomes the heat receiving fluid 42a. This high-temperature heat receiving fluid 42 a is led out from the opening 11 b of the heat storage container 11 and supplied to the heat demand facility 40 for use. Thus, when the chemical heat storage material 12 of the chemical heat storage reactor 10 completes the hydration reaction, the calcium oxide (CaO) of the chemical heat storage material 12 changes to calcium hydroxide (Ca (OH) ₂ ). Step 19 ends.

<< Step 20 >>
Step 20 is a step of carrying out the chemical heat storage reactor 10 after heat radiation from the heat receiving chamber 41 to the heat receiving preparation chamber 65. First, after the heat radiation step (step 19) is completed, the supply of the heat receiving fluid 42 from the water vapor generating device 43 to the heat receiving chamber 41 is stopped. Next, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 10 in the heat receiving chamber 41 is carried out to the heat receiving preparation chamber 65. At this time, the open / close doors 65a and 65b of the heat receiving preparation chamber 65 are closed. The method for carrying out the chemical heat storage reactor 10 from the heat receiving chamber 41 to the heat receiving preparation chamber 65 is the same as in step 14 above. After carrying out the chemical heat storage reactor 10, the open / close door 41a is closed.

  Next, the vacuum pump VP provided in the heat reception preparation chamber 65 is operated, and the vacuum valve 66a of the vacuum pipe 66 is opened to decompress the inside of the heat reception preparation chamber 65. In the second embodiment, the openings 11a and 11b of the chemical heat storage reactor 10 are open and do not have a lid, but the vacuum pump VP is operated to bring the heat receiving preparation chamber 65 into a reduced pressure state. Thus, water vapor (a part of the heat receiving fluid 42) inside the chemical heat storage reactor 10 can be efficiently removed.

  The vacuum valve 66a is closed and the vacuum pump VP is stopped when the inside of the heat receiving preparation chamber 65 reaches the set pressure reduction level. In this state, the chemical heat storage reactor 10 after heat storage is located inside the heat receiving preparation chamber 65 in a reduced pressure state.

<< Step 21 >>
Step 21 is a process of carrying out the chemical heat storage reactor 10 after heat radiation from the heat reception preparation chamber 65 to the transfer return path 62. First, the open / close door 65 b of the heat reception preparation chamber 65 is opened, and the chemical heat storage reactor 10 in the heat reception preparation chamber 65 is carried out to the transfer return path 62. The method for carrying out the chemical heat storage reactor 10 from the heat receiving preparation chamber 65 to the transfer return path 62 is the same as in step 15 above. After carrying out the chemical heat storage reactor 10, the open / close door 65b is closed. The inside of the transfer return path 62 is also in a reduced pressure state. In this state, the chemical heat storage reactor 10 after heat radiation is located on the heat receiving preparation chamber 65 side inside the transfer return path 62.

<< Step 22 >>
Step 22 is a process of transferring the chemical heat storage reactor 10 after heat dissipation by the transfer return path 62. In this state, a plurality of chemical heat storage reactors 10 after heat dissipation are present in the transfer return path 62. In this step 22, the plurality of chemical heat storage reactors 10 are sequentially transferred from the heat receiving preparation chamber 65 side to the heat supply preparation chamber 63 side in the transfer return path 62. The method for transferring the chemical heat storage reactor 10 inside the transfer return path 62 is the same as in step 16 above. In the state after the transfer, the transfer is stopped when the first chemical heat storage reactor 10 among the plurality of chemical heat storage reactors 10 reaches the heat supply preparation chamber 63. This corresponds to the initial state in the state after the transfer.

  In this way, by repeating the cycle consisting of the above steps 11 to 22, it is possible to realize efficient heat transport while suppressing transportation costs. In the second embodiment, the plurality of chemical heat storage reactors 10 can be sequentially transferred in the transfer forward path 61 and the transfer return path 62, and the efficiency of heat transport is improved. In addition, in this cycle, the efficiency of heat transport is further improved by simultaneously performing Steps 11 to 16 related to heat storage and Steps 17 to 22 related to heat dissipation in parallel.

Third embodiment:
Next, a third embodiment of the heat transport system according to the present invention will be described. The third embodiment uses a chemical heat storage reactor 20 shown in FIG. FIG. 5 is a schematic configuration diagram of a heat transport system according to the third embodiment. In FIG. 5, as in the first embodiment, the heat transport system 70 supplies high-temperature waste heat (heat quantity Q of the heat supply fluid) exceeding 400 ° C. released by the heat supply facility 30 to the chemical heat storage reactor 20. Heat is stored, the chemical heat storage reactor 20 is transferred to the heat demand facility 40, and the stored heat quantity Q is radiated and supplied to the heat demand facility 40. In the third embodiment, unlike the first embodiment, assuming that the distance between the heat supply facility 30 and the heat demand facility 40 is relatively long, the first embodiment is used for transferring the chemical heat storage reactor 20. It does not adopt a transfer passage like a form.

  In FIG. 5, the heat supply facility 30 includes a heat supply chamber 31 for supplying the chemical heat storage reactor 20 with the amount of heat Q released from the heat supply facility 30 and storing the heat. The heat supply chamber 31 is provided with an open / close door 31 a for carrying in and out the chemical heat storage reactor 20. The open / close mechanism of the open / close door 31a may adopt a drive type or a manual type. The heat supply chamber 31 includes a vacuum pipe 34 and a vacuum pump VP (not shown) for reducing the pressure inside the heat supply chamber 31. The vacuum pipe 34 is provided with a vacuum valve 34a that shuts off the heat supply chamber 31 and the vacuum pump VP.

  On the other hand, the heat demand facility 40 includes a heat receiving chamber 41 for supplying the heat demand facility 40 with the amount of heat Q released from the chemical heat storage reactor 20. The heat receiving chamber 41 is provided with an open / close door 41 a for carrying in and out the chemical heat storage reactor 20. The opening / closing mechanism of the opening / closing door 41a may adopt a drive type or a manual type. Further, the heat receiving chamber 41 includes a water vapor generating device 43 that supplies a heat receiving fluid 42 containing reaction water for causing a hydration reaction of the chemical heat storage material 22 accommodated in the chemical heat storage reactor 20 in a steam state. ing. The heat receiving chamber 41 includes a vacuum pipe 44 and a vacuum pump VP (not shown) for reducing the inside of the heat receiving chamber 41. The vacuum pipe 44 is provided with a vacuum valve 44a that shuts off the heat receiving chamber 41 and the vacuum pump VP.

  Further, as shown in FIG. 5, in the third embodiment, unlike the first embodiment, no transfer passage is provided between the heat supply chamber 31 and the heat receiving chamber 41. Therefore, in the third embodiment, the stored chemical heat storage reactor 20 is transferred through the external environment. Therefore, as described above, the openings 21a and 21b of the chemical heat storage reactor 20 are provided with the lids 24a and 24b for sealing the inside of the chemical heat storage reactor 20 from the external environment to prevent heat dissipation. (See FIG. 2).

  In such a configuration, in the heat transport system according to the third embodiment, the step of carrying the chemical heat storage reactor 20 into the heat supply chamber 31 from the external environment (step 31), the amount of heat Q generated from the heat supply facility 30 Is stored in the chemical heat storage reactor 20 carried into the heat supply chamber 31 (step 32), the chemical heat storage reactor 20 after heat storage is transferred from the heat supply chamber 31 to the external environment (step 33), and after heat storage The step of transferring the chemical heat storage reactor 20 to the heat demand facility 40 (step 34), the step of carrying the transferred chemical heat storage reactor 20 into the heat receiving chamber 41 from the external environment (step 35), and the chemical heat storage after heat storage A step of releasing the heat quantity Q from the reactor 20 and supplying it to the heat demand facility 40 (step 36), and a step of carrying out the chemical heat storage reactor 20 after the heat release from the heat receiving chamber 41 to the external environment (step). 7), and repeats the cycle of the steps of the process (step 38) for transferring the chemical heat reactor 20 after radiating up heat supply facilities 30. FIG. 5 shows a state in which the heat storage process of step 32 and the heat dissipation process of step 36 are proceeding simultaneously. Hereinafter, these steps will be described with reference to FIG.

≪Initial state≫
In the initial state, a plurality of chemical heat storage reactors 20 before heat storage (after heat radiation) exist in the external environment of the heat supply chamber 31 and the heat receiving chamber 41. The lids 24a and 24b of the chemical heat storage reactor 20 existing in the external environment are both sealed and the inside is in a reduced pressure state. The open / close door 31a of the heat supply chamber 31 and the open / close door 41a of the heat receiving chamber 41 are closed. The vacuum valves 34a and 44a of the vacuum pipes 34 and 44 are closed, and the insides of the heat supply chamber 31 and the heat receiving chamber 41 are in a reduced pressure state. The supply of the heat supply fluid 32 to the heat supply chamber 31 and the supply of the heat reception fluid 42 to the heat reception chamber 41 are stopped. In this state, the cycle consisting of steps 31 to 38 is repeated.

<< Step 31 >>
Step 31 is a process of carrying the initial chemical heat storage reactor 20 into the heat supply chamber 31 from the external environment. First, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 20 in the external environment is carried into the heat supply chamber 31. In addition, it does not specifically limit regarding the method of carrying in the chemical thermal storage reactor 20 from the external environment to the heat supply chamber 31, A drive-type carrying-in mechanism may be employ | adopted or manual carrying-in may be employ | adopted. . After carrying in the chemical heat storage reactor 20, the door 31a is closed. In this state, the chemical heat storage reactor 20 before heat storage is installed at a fixed position in the heat supply chamber 31.

<< Step 32 >>
Step 32 is a step of storing heat quantity Q generated from the heat supply facility 30 in the chemical heat storage reactor 20 carried into the heat supply chamber 31. In this heat storage process, the chemical heat storage reactor 20 is carried into the heat supply chamber 31 and installed at a fixed position, and the open / close door 31a of the heat supply chamber 31 is closed. Further, the lids 24a and 24b of the chemical heat storage reactor 20 are both sealed.

  In step 32, first, the vacuum pump VP provided in the heat supply chamber 31 is operated, the vacuum valve 34a of the vacuum pipe 34 is opened, and the inside of the heat supply chamber 31 is decompressed. When the inside of the heat supply chamber 31 reaches the set pressure reduction level, the vacuum valve 34a is closed and the vacuum pump VP is stopped. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are opened. The opening / closing mechanism of the lids 24a, 24b of the chemical heat storage reactor 20 is not particularly limited, and may be an automatic opening / closing operation or a manual opening / closing operation.

  In this state, the heat supply fluid 32 is supplied from the heat supply facility 30 toward the heat supply chamber 31. The heat supply fluid 32 supplied to the heat supply chamber 31 is 426 ° C. high-temperature air that does not contain carbon dioxide and has a heat quantity Q, as in the first embodiment. The heat supply fluid 32 is introduced into the fluid flow path 23 from the opening 21 a of the heat storage container 21. The heat supply fluid 32 passing through the fluid flow path 23 efficiently contacts the chemical heat storage material 22 and the surfaces of the heat receiving and radiating plate 23c to exchange heat. By this heat exchange, a dehydration reaction of the chemical heat storage material 22 occurs, and the heat quantity Q of the heat supply fluid 32 is stored in the chemical heat storage material 22.

At this time, the heat supply fluid 32 introduced into the fluid flow path 23 gives the amount of heat Q to the chemical heat storage material 22 to become low-temperature air, and the opening 21b of the heat storage container 21 with water vapor generated by the dehydration reaction. Is derived from Here, it is preferable to provide an exhaust facility (not shown) for removing water vapor generated by the dehydration reaction from the inside of the heat supply chamber 31. In this way, when the chemical heat storage material 22 of the chemical heat storage reactor 20 completes the dehydration reaction, the calcium hydroxide (Ca (OH) ₂ ) of the chemical heat storage material 22 changes to calcium oxide (CaO). 32 ends.

<< Step 33 >>
Step 33 is a process of carrying out the chemical heat storage reactor 20 after heat storage from the heat supply chamber 31 to the external environment. First, after the heat storage process (step 32) is completed, the supply of the heat supply fluid 32 from the heat supply facility 30 to the heat supply chamber 31 is stopped. Next, the vacuum pump VP provided in the heat supply chamber 31 is operated, and the vacuum valve 34 a of the vacuum pipe 34 is opened to decompress the inside of the heat supply chamber 31. This is to eliminate air remaining in the heat supply chamber 31 and water vapor generated by the dehydration reaction. By this depressurization operation, air inside the chemical heat storage reactor 20 and water vapor generated by the dehydration reaction are efficiently eliminated. Next, the vacuum valve 34a is closed and the vacuum pump VP is stopped at the stage where the inside of the heat supply chamber 31 reaches the set pressure reduction degree. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are closed, and the inside of the heat storage container 21 is sealed in a reduced pressure state.

  Next, the open / close door 31a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 20 in the heat supply chamber 31 is carried out to the external environment. The method for carrying out the chemical heat storage reactor 20 from the heat supply chamber 31 to the external environment is not particularly limited, and a drive-type carry-out mechanism or manual carry-out may be adopted. . After unloading the chemical heat storage reactor 20, the open / close door 31a is closed. In this state, the chemical heat storage reactor 20 after heat storage exists in the external environment with the inside sealed by the lids 24a and 24b.

<< Step 34 >>
Step 34 is a process of transferring the chemical heat storage reactor 20 after heat storage to the heat demand facility 40. The means for transferring the chemical heat storage reactor 20 from the heat supply facility 30 to the heat receiving facility 40 is not particularly limited, and may be transferred by a vehicle or the like. In addition, the stored chemical heat storage reactor 20 may be stored in a storage and transferred to the heat demand facility 40 as necessary. Further, the inside of the chemical heat storage reactor 20 is maintained in a reduced pressure state by the lids 24a and 24b, and it is possible to prevent the heat quantity Q stored from the chemical heat storage reactor 20 being transferred or stored from being dissipated. .

<< Step 35 >>
Step 35 is a step of carrying the transferred chemical heat storage reactor 20 into the heat receiving chamber 41 from the external environment. First, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 20 in the external environment is carried into the heat receiving chamber 41. The method for carrying the chemical heat storage reactor 20 from the external environment into the heat supply chamber 31 is the same as in step 31 above. After carrying in the chemical heat storage reactor 20, the open / close door 41a is closed. In this state, the chemical heat storage reactor 20 before heat storage is installed at a fixed position in the heat receiving chamber 41.

<< Step 36 >>
Step 36 is a process of dissipating the heat quantity Q from the chemical heat storage reactor 20 after heat storage and supplying it to the heat demand facility 40. In this heat radiation process, the chemical heat storage reactor 20 is carried into the heat receiving chamber 41 and installed at a fixed position, and the open / close door 41a of the heat receiving chamber 41 is closed. Further, the lids 24a and 24b of the chemical heat storage reactor 20 are both sealed.

  In step 36, first, the vacuum pump VP provided in the heat receiving chamber 41 is operated, and the vacuum valve 44a of the vacuum pipe 44 is opened to decompress the inside of the heat receiving chamber 41. When the inside of the heat receiving chamber 41 reaches the set pressure reduction level, the vacuum valve 44a is closed and the vacuum pump VP is stopped. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are opened.

  In this state, the heat receiving fluid 42 is supplied from the water vapor generating device 43 toward the heat receiving chamber 41. In the third embodiment, similarly to the first embodiment, the heat receiving fluid 42 is low-temperature water vapor that is lower than the heat generation temperature of the chemical heat storage material 22. The heat receiving fluid 42 is introduced into the fluid flow path 23 from the opening 21 a of the heat storage container 21. The heat receiving fluid 42 passing through the fluid flow path 23 efficiently contacts the surface of the chemical heat storage material 22 to cause a hydration reaction. Heat release from the chemical heat storage material 22 is caused by this hydration reaction, and the amount of heat Q stored in the chemical heat storage material 22 is released.

  Here, the heat receiving fluid 42 released from the water vapor generating device 43 contains excessive moisture exceeding the amount of reaction water necessary for the hydration reaction of the chemical heat storage material 22. Therefore, the heat receiving fluid 42 introduced into the fluid flow path 23 supplies the chemical heat storage material 22 with an amount of water necessary for the hydration reaction, and is derived from the opening 21b of the heat storage container 21 as water vapor corresponding to excess water. The

At this time, the water vapor corresponding to the excess water efficiently contacts the heat radiating chemical heat storage material 22 and the heat receiving heat radiating plate 23c, absorbs the amount of heat Q radiated by the hydration reaction of the chemical heat storage material 22, and has a high temperature. It becomes the heat receiving fluid 42a. This high-temperature heat receiving fluid 42 a is led out from the opening 21 b of the heat storage container 21 and supplied to the heat demand facility 40 for use. Thus, when the chemical heat storage material 22 of the chemical heat storage reactor 20 completes the hydration reaction, the calcium oxide (CaO) of the chemical heat storage material 22 changes to calcium hydroxide (Ca (OH) ₂ ). Step 36 ends.

≪Step 37≫
Step 37 is a step of carrying out the chemical heat storage reactor 20 after heat radiation from the heat receiving chamber 41 to the external environment. First, after the heat radiation step (step 36) is completed, the supply of the heat receiving fluid 42 from the water vapor generating device 43 to the heat receiving chamber 41 is stopped. Next, the vacuum pump VP provided in the heat receiving chamber 41 is operated, and the vacuum valve 44 a of the vacuum pipe 44 is opened to decompress the inside of the heat receiving chamber 41. This is to eliminate the heat receiving fluid 42 a remaining inside the heat receiving chamber 41. By this depressurization operation, water vapor (a part of the heat receiving fluid 42) inside the chemical heat storage reactor 20 can be efficiently removed. Next, the vacuum valve 44a is closed and the vacuum pump VP is stopped at the stage where the inside of the heat receiving chamber 41 reaches the set pressure reduction degree. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are closed, and the inside of the heat storage container 21 is sealed in a reduced pressure state.

  Next, the open / close door 41a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 20 in the heat receiving chamber 41 is carried out to the external environment. The method for carrying out the chemical heat storage reactor 20 from the heat receiving chamber 41 to the external environment is the same as in step 33 above. After unloading the chemical heat storage reactor 20, the open / close door 41a is closed. In this state, the chemical heat storage reactor 20 after heat dissipation exists in the external environment in a state where the inside is sealed by the lids 24a and 24b.

≪Step 38≫
Step 38 is a process of transferring the chemical heat storage reactor 20 after heat radiation to the heat supply facility 30. In step 38, the same operation as in step 34 is performed. Also in this step 38, the inside of the chemical heat storage reactor 20 is maintained in a reduced pressure state by the lids 24a and 24b. In the state after the transfer, the chemical heat storage reactor 20 corresponds to the initial state.

  In this way, by repeating the cycle consisting of the above steps 31 to 38, it is possible to reduce the transportation cost and realize efficient heat transportation. In the third embodiment, the plurality of chemical heat storage reactors 20 can be sequentially transferred to the external environment, and the efficiency of heat transport is improved. In this cycle, the steps 31 to 34 for heat storage and the steps 35 to 38 for heat dissipation proceed simultaneously in parallel, thereby further improving the efficiency of heat transport.

Fourth embodiment:
Next, a fourth embodiment of the heat transport system according to the present invention will be described. The fourth embodiment uses the chemical heat storage reactor 20 shown in FIG. 2 as in the third embodiment. FIG. 6 is a schematic configuration diagram of a heat transport system according to the fourth embodiment. In FIG. 6, as in the first embodiment, the heat transport system 80 supplies high-temperature waste heat (heat quantity Q of the heat supply fluid) exceeding 400 ° C. released by the heat supply facility 30 to the chemical heat storage reactor 20. Heat is stored, the chemical heat storage reactor 20 is transferred to the heat demand facility 40, and the stored heat quantity Q is radiated and supplied to the heat demand facility 40. In the fourth embodiment, as in the third embodiment, assuming that the distance between the heat supply facility 30 and the heat demand facility 40 is relatively long, the first heat transfer reactor 20 is transferred to the first chemical heat storage reactor 20. The transfer passage as in the embodiment is not adopted.

  In FIG. 6, the heat supply facility 30 includes a heat supply chamber 31 for supplying the chemical heat storage reactor 20 with the amount of heat Q released from the heat supply facility 30 to store the heat. On the other hand, the heat demand facility 40 includes a heat receiving chamber 41 for supplying the heat demand facility 40 with the amount of heat Q released from the chemical heat storage reactor 20. The heat supply chamber 31 and the heat receiving chamber 41 are sealed from the external environment, and the chemical heat storage reactor 20 is detachably installed therein. Further, the heat receiving chamber 41 includes a water vapor generating device 43 that supplies a heat receiving fluid 42 containing reaction water for causing a hydration reaction of the chemical heat storage material 22 accommodated in the chemical heat storage reactor 20 in a steam state. ing.

  In FIG. 6, the heat supply chamber 31 includes a heat supply preparation chamber 83 as a preparation chamber for carrying the chemical heat storage reactor 20 into the heat supply chamber 31. On the other hand, the heat receiving chamber 41 includes a heat receiving preparation chamber 85 as a preparation chamber for carrying the chemical heat storage reactor 20 into the heat receiving chamber 41. The heat supply preparation chamber 83 and the heat reception preparation chamber 85 are independent of the heat supply chamber 31 and the heat reception chamber 41, respectively, and are sealed from the external environment.

  Between the heat supply chamber 31 and the heat supply preparation chamber 83, an open / close door 31a for carrying in and out the chemical heat storage reactor 20 is provided. In addition, an open / close door 83 a for carrying in and out the chemical heat storage reactor 20 is provided between the heat supply preparation chamber 83 and the external environment. The open / close mechanisms of the open / close doors 31a and 83a may adopt a drive type or a manual type. The heat supply preparation chamber 83 includes a vacuum pipe 84 and a vacuum pump VP (not shown) for reducing the pressure inside the heat supply preparation chamber 83. The vacuum pipe 84 is provided with a vacuum valve 84a that shuts off the heat supply preparation chamber 83 and the vacuum pump VP.

  On the other hand, between the heat receiving chamber 41 and the heat receiving preparation chamber 85, an open / close door 41a for carrying in and out the chemical heat storage reactor 20 is provided. An open / close door 85a for carrying in and out the chemical heat storage reactor 20 is provided between the heat reception preparation chamber 85 and the external environment. The open / close mechanisms of the open / close doors 41a and 85a may adopt a drive type or a manual type. The heat acceptance preparation chamber 85 includes a vacuum pipe 86 and a vacuum pump VP (not shown) for reducing the pressure inside the heat reception preparation chamber 85. The vacuum pipe 86 is provided with a vacuum valve 86a that shuts off the heat receiving preparation chamber 85 and the vacuum pump VP.

  In such a configuration, in the heat transport system according to the fourth embodiment, the step of carrying the chemical heat storage reactor 20 into the heat supply preparation chamber 83 from the external environment (step 41), and supplying the chemical heat storage reactor 20 with heat. Step (step 42) for carrying in the heat supply chamber 31 from the preparation chamber 83, Step (step 43) for storing the heat quantity Q generated from the heat supply facility 30 in the chemical heat storage reactor 20 carried into the heat supply chamber 31 (step 43), A step of carrying out the subsequent chemical heat storage reactor 20 from the heat supply chamber 31 to the heat supply preparation chamber 83 (step 44), and a step of carrying out the chemical heat storage reactor 20 after heat storage from the heat supply preparation chamber 83 to the external environment (step). 45), a step of transferring the chemical heat storage reactor 20 after heat storage to the heat demand facility 40 (step 46), and a work for bringing the chemical heat storage reactor 20 after transfer into the heat receiving preparation chamber 85 from the external environment. (Step 47), the step of carrying the chemical heat storage reactor 20 after heat storage into the heat receiving chamber 41 from the heat receiving preparation chamber 85 (step 48), the heat quantity Q being radiated from the chemical heat storage reactor 20 after heat storage, and the heat demand. A process of supplying to the equipment 40 (step 49), a process of carrying out the chemical heat storage reactor 20 after heat dissipation from the heat receiving chamber 41 to the heat receiving preparation chamber 85 (step 50), and heat receiving the chemical heat storage reactor 20 after heat dissipation. A cycle consisting of a step of carrying out the preparation chamber 85 to the external environment (step 51) and a step of transferring the chemical heat storage reactor 20 after heat radiation to the heat supply facility 30 (step 52) is repeated. FIG. 6 shows a state in which the heat storage process in step 43 and the heat dissipation process in step 49 are simultaneously proceeding. Hereinafter, these steps will be described with reference to FIG.

≪Initial state≫
In the initial state, a plurality of chemical heat storage reactors 20 exist in the external environment before heat storage (after heat dissipation) and after heat storage. The lids 24a and 24b of the chemical heat storage reactor 20 existing in the external environment are both sealed and the inside is in a reduced pressure state. On the other hand, the heat supply chamber 31, the heat supply preparation chamber 83, the heat reception chamber 41, and the heat reception preparation chamber 85 are vacant. The open / close door 31a of the heat supply chamber 31 and the open / close door 83a of the heat supply preparation chamber 83 are closed. The open / close door 41a of the heat receiving chamber 41 and the open / close door 85a of the heat receiving preparation chamber 85 are closed. The vacuum valves 84a and 86a of the vacuum pipes 84 and 86 are closed, and the insides of the heat supply preparation chamber 83 and the heat reception preparation chamber 85 are in a reduced pressure state. The supply of the heat supply fluid 32 to the heat supply chamber 31 and the supply of the heat reception fluid 42 to the heat reception chamber 41 are stopped. In this state, the cycle consisting of steps 41 to 52 is repeated.

<< Step 41 >>
Step 41 is a process of carrying the chemical heat storage reactor 20 into the heat supply preparation chamber 83 from the external environment. First, the open / close door 83 a of the heat supply preparation chamber 83 is opened, and the chemical heat storage reactor 20 in the external environment is carried into the heat supply preparation chamber 83. The method for bringing the chemical heat storage reactor 20 into the heat supply preparation chamber 83 from the external environment is not particularly limited, and a drive-type carry-in mechanism or manual carry-in may be adopted. Good. After carrying in the chemical heat storage reactor 20, the open / close door 83a is closed. In this state, the chemical heat storage reactor 20 before heat storage is located in the heat supply preparation chamber 83.

<< Step 42 >>
Step 42 is a process of carrying the chemical heat storage reactor 20 from the heat supply preparation chamber 83 into the heat supply chamber 31. The chemical heat storage reactor 20 is carried into the heat supply preparation chamber 83, and the open / close door 31a of the heat supply chamber 31 and the open / close door 83a of the heat supply preparation chamber 83 are closed. Further, the lids 24a and 24b of the chemical heat storage reactor 20 are both sealed.

  In step 42, first, the vacuum pump VP provided in the heat supply preparation chamber 83 is operated, the vacuum valve 84a of the vacuum pipe 84 is opened, and the inside of the heat supply preparation chamber 83 is decompressed. The vacuum valve 84a is closed and the vacuum pump VP is stopped when the inside of the heat supply preparation chamber 83 reaches the set pressure reduction level. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are opened. The opening / closing mechanism of the lids 24a, 24b of the chemical heat storage reactor 20 is not particularly limited, and may be an automatic opening / closing operation or a manual opening / closing operation.

  Next, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 20 in the heat supply preparation chamber 83 is carried into the heat supply chamber 31. The method for carrying the chemical heat storage reactor 20 from the heat supply preparation chamber 83 to the heat supply chamber 31 is not particularly limited, and a drive-type carry-in mechanism may be adopted or manual carry-in is adopted. May be. After carrying in the chemical heat storage reactor 20, the door 31a is closed. In this state, the chemical heat storage reactor 20 before heat storage is installed at a fixed position in the heat supply chamber 31.

<< Step 43 >>
Step 43 is a step of storing heat quantity Q generated from the heat supply facility 30 in the chemical heat storage reactor 20 carried into the heat supply chamber 31. In this heat storage process, the chemical heat storage reactor 20 is carried into the heat supply chamber 31 and installed at a fixed position, and the open / close door 31a of the heat supply chamber 31 is closed. Moreover, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are in an open state.

  In this state, the heat supply fluid 32 is supplied from the heat supply facility 30 toward the heat supply chamber 31. The heat supply fluid 32 supplied to the heat supply chamber 31 is 426 ° C. high-temperature air that does not contain carbon dioxide and has a heat quantity Q, as in the first embodiment. The heat supply fluid 32 is introduced into the fluid flow path 23 from the opening 21 a of the heat storage container 21. The heat supply fluid 32 passing through the fluid flow path 23 efficiently contacts the chemical heat storage material 22 and the surfaces of the heat receiving and radiating plate 23c to exchange heat. By this heat exchange, a dehydration reaction of the chemical heat storage material 22 occurs, and the heat quantity Q of the heat supply fluid 32 is stored in the chemical heat storage material 22.

At this time, the heat supply fluid 32 introduced into the fluid flow path 23 gives the amount of heat Q to the chemical heat storage material 22 to become low-temperature air, and the opening 21b of the heat storage container 21 with water vapor generated by the dehydration reaction. Is derived from Here, it is preferable to provide an exhaust facility (not shown) for removing water vapor generated by the dehydration reaction from the inside of the heat supply chamber 31. In this way, when the chemical heat storage material 22 of the chemical heat storage reactor 20 completes the dehydration reaction, the calcium hydroxide (Ca (OH) ₂ ) of the chemical heat storage material 22 changes to calcium oxide (CaO). 43 ends.

≪Step 44≫
Step 44 is a step of carrying out the chemical heat storage reactor 20 after heat storage from the heat supply chamber 31 to the heat supply preparation chamber 83. First, after the heat storage process (step 43) is completed, the supply of the heat supply fluid 32 from the heat supply facility 30 to the heat supply chamber 31 is stopped. Next, the open / close door 31 a of the heat supply chamber 31 is opened, and the chemical heat storage reactor 20 in the heat supply chamber 31 is carried out to the heat supply preparation chamber 83. At this time, the open / close door 83a of the heat supply preparation chamber 83 is closed. The method for carrying out the chemical heat storage reactor 20 from the heat supply chamber 31 to the heat supply preparation chamber 83 is not particularly limited, and a drive-type carry-out mechanism may be adopted or manual carry-out is adopted. May be. After unloading the chemical heat storage reactor 20, the open / close door 31a is closed.

≪Step 45≫
Step 45 is a step of carrying out the chemical heat storage reactor 20 after heat storage from the heat supply preparation chamber 83 to the external environment. The chemical heat storage reactor 20 is carried into the heat supply preparation chamber 83, and the open / close door 31a of the heat supply chamber 31 and the open / close door 83a of the heat supply preparation chamber 83 are closed. Moreover, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are in an open state.

  In step 45, first, the vacuum pump VP provided in the heat supply preparation chamber 83 is operated, the vacuum valve 84a of the vacuum pipe 84 is opened, and the inside of the heat supply preparation chamber 83 is decompressed. By this depressurization operation, the air inside the chemical heat storage reactor 20 and the water vapor generated by the dehydration reaction are efficiently eliminated, and the heat quantity Q stored from the chemical heat storage reactor 20 is prevented from being dissipated in the subsequent transfer process. Can do. The vacuum valve 84a is closed and the vacuum pump VP is stopped when the inside of the heat supply preparation chamber 83 reaches the set pressure reduction level. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are closed, and the inside of the heat storage container 21 is sealed in a reduced pressure state.

  Next, the open / close door 83a of the heat supply preparation chamber 83 is opened, and the chemical heat storage reactor 20 in the heat supply preparation chamber 83 is carried out to the external environment. In addition, it does not specifically limit regarding the method of carrying out the chemical thermal storage reactor 20 from the heat supply preparation chamber 83 to an external environment, A drive-type carrying-out mechanism may be employ | adopted or manual carrying-out may be employ | adopted. Good. After unloading the chemical heat storage reactor 20, the open / close door 83a is closed. In this state, the chemical heat storage reactor 20 after heat storage exists in the external environment with the inside sealed by the lids 24a and 24b.

<< Step 46 >>
Step 46 is a process of transferring the chemical heat storage reactor 20 after heat storage to the heat demand facility 40. The means for transferring the chemical heat storage reactor 20 from the heat supply facility 30 to the heat receiving facility 40 is not particularly limited, and may be transferred by a vehicle or the like. In addition, the stored chemical heat storage reactor 20 may be stored in a storage and transferred to the heat demand facility 40 as necessary. Further, the inside of the chemical heat storage reactor 20 is maintained in a reduced pressure state by the lids 24a and 24b, and it is possible to prevent the heat quantity Q stored from the chemical heat storage reactor 20 being transferred or stored from being dissipated. .

<< Step 47 >>
Step 47 is a step of carrying the transferred chemical heat storage reactor 20 into the heat receiving preparation chamber 85 from the external environment. First, the open / close door 85 a of the heat reception preparation chamber 85 is opened, and the chemical heat storage reactor 20 in the external environment is carried into the heat reception preparation chamber 85. The method for bringing the chemical heat storage reactor 20 into the heat receiving preparation chamber 85 from the external environment is the same as in step 41 described above. After carrying in the chemical heat storage reactor 20, the open / close door 85a is closed. In this state, the chemical heat storage reactor 20 after heat storage is located in the heat receiving preparation chamber 85.

≪Step 48≫
Step 48 is a step of carrying the chemical heat storage reactor 20 after heat storage into the heat receiving chamber 41 from the heat receiving preparation chamber 85. The chemical heat storage reactor 20 is carried into the heat reception preparation chamber 85, and the opening / closing door 41a of the heat reception chamber 41 and the opening / closing door 85a of the heat reception preparation chamber 85 are closed. Further, the lids 24a and 24b of the chemical heat storage reactor 20 are both sealed.

  In step 48, first, the vacuum pump VP provided in the heat receiving preparation chamber 85 is operated, and the vacuum valve 86a of the vacuum pipe 86 is opened to decompress the inside of the heat receiving preparation chamber 85. The vacuum valve 86a is closed and the vacuum pump VP is stopped when the inside of the heat receiving preparation chamber 85 reaches the set pressure reduction level. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are opened. The open / close mechanism of the lids 24a, 24b of the chemical heat storage reactor 20 is the same as in step 42 above.

  Next, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 20 in the heat receiving preparation chamber 85 is carried into the heat receiving chamber 41. The method for bringing the chemical heat storage reactor 20 into the heat receiving chamber 41 from the heat receiving preparation chamber 85 is the same as in step 42 described above. After carrying in the chemical heat storage reactor 20, the open / close door 41a is closed. In this state, the chemical heat storage reactor 20 after heat storage is installed at a fixed position in the heat receiving chamber 41.

<< Step 49 >>
Step 49 is a process of dissipating the heat quantity Q from the chemical heat storage reactor 20 after heat storage and supplying it to the heat demand facility 40. In this heat radiation process, the chemical heat storage reactor 20 carried into the heat receiving chamber 41 is installed at a fixed position of the heat receiving chamber 41, and the open / close door 41a of the heat receiving chamber 41 is closed. Moreover, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are in an open state.

  In this state, the heat receiving fluid 42 is supplied from the water vapor generating device 43 toward the heat receiving chamber 41. In the fourth embodiment, as in the first embodiment, the heat receiving fluid 42 is low-temperature water vapor that is lower than the heat generation temperature of the chemical heat storage material 22. The heat receiving fluid 42 is introduced into the fluid flow path 23 from the opening 21 a of the heat storage container 21. The heat receiving fluid 42 passing through the fluid flow path 23 efficiently contacts the surface of the chemical heat storage material 22 to cause a hydration reaction. Heat release from the chemical heat storage material 22 is caused by this hydration reaction, and the amount of heat Q stored in the chemical heat storage material 22 is released.

  Here, the heat receiving fluid 42 released from the water vapor generating device 43 contains excessive moisture exceeding the amount of reaction water necessary for the hydration reaction of the chemical heat storage material 22. Therefore, the heat receiving fluid 42 introduced into the fluid flow path 23 supplies the chemical heat storage material 22 with an amount of water necessary for the hydration reaction, and is derived from the opening 21b of the heat storage container 21 as water vapor corresponding to excess water. The

At this time, the water vapor corresponding to the excess water efficiently contacts the heat radiating chemical heat storage material 22 and the heat receiving heat radiating plate 23c, absorbs the amount of heat Q radiated by the hydration reaction of the chemical heat storage material 22, and has a high temperature. It becomes the heat receiving fluid 42a. This high-temperature heat receiving fluid 42 a is led out from the opening 21 b of the heat storage container 21 and supplied to the heat demand facility 40 for use. Thus, when the chemical heat storage material 22 of the chemical heat storage reactor 20 completes the hydration reaction, the calcium oxide (CaO) of the chemical heat storage material 22 changes to calcium hydroxide (Ca (OH) ₂ ). Step 49 ends.

≪Step 50≫
Step 50 is a step of carrying out the chemical heat storage reactor 20 after heat radiation from the heat receiving chamber 41 to the heat receiving preparation chamber 85. First, after the heat radiation step (step 49) is completed, the supply of the heat receiving fluid 42 from the water vapor generating device 43 to the heat receiving chamber 41 is stopped. Next, the open / close door 41 a of the heat receiving chamber 41 is opened, and the chemical heat storage reactor 20 in the heat receiving chamber 41 is carried out to the heat receiving preparation chamber 85. At this time, the open / close door 85a of the heat receiving preparation chamber 85 is closed. The method for carrying out the chemical heat storage reactor 20 from the heat receiving chamber 41 to the heat receiving preparation chamber 85 is the same as in step 44 described above. After unloading the chemical heat storage reactor 20, the open / close door 41a is closed.

≪Step 51≫
Step 51 is a step of carrying out the chemical heat storage reactor 20 after heat release from the heat acceptance preparation chamber 85 to the external environment. The chemical heat storage reactor 20 is carried into the heat reception preparation chamber 85, and the opening / closing door 41a of the heat reception chamber 41 and the opening / closing door 85a of the heat reception preparation chamber 85 are closed. Moreover, the lids 24a and 24b of the chemical heat storage reactor 20 are opened, and the openings 21a and 21b of the heat storage container 21 are in an open state.

  In step 51, first, the vacuum pump VP provided in the heat receiving preparation chamber 85 is operated, and the vacuum valve 86a of the vacuum pipe 86 is opened to decompress the inside of the heat receiving preparation chamber 85. By this depressurization operation, water vapor (a part of the heat receiving fluid 42) inside the chemical heat storage reactor 20 can be efficiently removed. The vacuum valve 86a is closed and the vacuum pump VP is stopped when the inside of the heat receiving preparation chamber 85 reaches the set pressure reduction level. Next, the lids 24a and 24b of the chemical heat storage reactor 20 are closed, and the inside of the heat storage container 21 is sealed in a reduced pressure state.

  Next, the open / close door 85a of the heat reception preparation chamber 85 is opened, and the chemical heat storage reactor 20 in the heat reception preparation chamber 85 is carried out to the external environment. The method for carrying out the chemical heat storage reactor 20 from the heat receiving preparation chamber 85 to the external environment is the same as in step 45 described above. After unloading the chemical heat storage reactor 20, the open / close door 85a is closed. In this state, the chemical heat storage reactor 20 after heat dissipation exists in the external environment in a state where the inside is sealed by the lids 24a and 24b.

<< Step 52 >>
Step 52 is a process of transferring the chemical heat storage reactor 20 after heat dissipation to the heat supply facility 30. In step 52, the same operation as in step 46 is performed. Also in this step 52, the inside of the chemical heat storage reactor 20 is maintained in a reduced pressure state by the lids 24a and 24b. In the state after the transfer, the chemical heat storage reactor 20 corresponds to the initial state.

  In this way, by repeating the cycle consisting of the above steps 41 to 52, it is possible to reduce the transportation cost and realize efficient heat transportation. In the fourth embodiment, the plurality of chemical heat storage reactors 20 can be sequentially transferred to the external environment, and the efficiency of heat transport is improved. In this cycle, the steps 41 to 46 related to heat storage and the steps 47 to 52 related to heat dissipation proceed simultaneously in parallel, thereby further improving the efficiency of heat transport.

  As described above, in the present invention, the chemical heat storage reactor that can increase the apparent heat storage density by reducing the size and weight without using the heat medium in the heat storage container and the heat exchanger for the heat medium. Can be provided. Further, by using this chemical heat storage reactor, it is possible to provide a heat transport system capable of reducing the transport cost and realizing efficient heat transport.

In carrying out the present invention, the following various modifications are not limited to the above embodiments.
(1) In each of the above embodiments, the temperature of waste heat released by the heat supply equipment is a high temperature exceeding 400 ° C., and a calcium hydroxide system is used as a chemical heat storage material in order to use this high-temperature waste heat. Although heat storage material is adopted, it is not limited to this, and by appropriately selecting the type of chemical heat storage material according to the temperature of the amount of heat released by the heat supply facility, the heat amount in various temperature ranges can be obtained. The present invention can also be applied to this.
(2) In each of the above embodiments, the supply and stop of the heat supply fluid in the heat supply chamber and the heat reception fluid in the heat reception chamber are repeated in each step. However, the present invention is not limited to this. And you may make it advance each step in the state which always flowed the heat receiving fluid.
(3) In each of the above embodiments, the reduced pressure state is configured using a vacuum pump. However, the present invention is not limited to this, and the reduced pressure state may be configured by any means. For example, the depressurized state in the heat receiving chamber is such that the supply of water vapor (heat receiving fluid) is stopped immediately before the chemical heat storage material completes heat dissipation, and the chemical heat storage material absorbs water vapor remaining in the heat reception chamber. You may make it the pressure reduction state inside.
(4) In the first embodiment, the pressure reducing mechanism (vacuum piping) is provided only in the transfer passage. However, the present invention is not limited to this, and the pressure reducing mechanism (vacuum) is also provided in the heat supply chamber and the heat receiving chamber. Piping) may be provided. Thereby, the decompression state of each step can be managed more highly.
(5) In the second embodiment, the pressure reducing mechanism (vacuum piping) is provided only in the heat supply preparation chamber and the heat reception preparation chamber. However, the present invention is not limited to this. Alternatively, a pressure reducing mechanism (vacuum piping) may be provided in the heat supply chamber and the heat receiving chamber. Thereby, the decompression state of each step can be managed more highly.
(6) In the fourth embodiment, the pressure reducing mechanism (vacuum piping) is provided only in the heat supply preparation chamber and the heat reception preparation chamber. However, the present invention is not limited to this, and the heat supply chamber and the heat reception chamber are not limited thereto. A decompression mechanism (vacuum piping) may also be provided in the chamber. Thereby, the decompression state of each step can be managed more highly.
(7) In said each embodiment, a pressure reduction state is comprised inside the chemical thermal storage reactor after thermal storage. One reason for this is that if water vapor generated by the dehydration reaction remains in the chemical heat storage reactor after heat storage, there is a possibility that a part of the hydration reaction may occur during transfer. As a method for preventing this, in each of the above embodiments, a vacuum pump is used. However, the present invention is not limited to this. For example, by any means such as replacement with dry air, water vapor is generated from the inside of the chemical heat storage reactor. You may make it exclude.
(8) In each of the above embodiments, a chemical heat storage reactor having two openings on the upper surface and the bottom surface is adopted, and heat storage and heat dissipation are performed in the heat supply chamber and the heat receiving chamber. However, the heat storage container may be sealed and connected to the heat supply fluid or the heat receiving fluid by connection piping without adopting the heat supply chamber and the heat receiving chamber. In this case, it is possible to carry out heat transport without dissipating the amount of heat stored in the chemical heat storage reactor by transferring the heat storage container in a state where the connection pipe of the heat storage container is sealed.

10, 20 ... Chemical heat storage reactor,
11, 21 ... thermal storage container, 11a, 11b, 21a, 21b ... opening,
12, 22 ... Chemical heat storage material,
13, 23 ... Fluid flow path, 13a, 13b ... Fluid, 13c, 23c ... Heat receiving heat sink,
24a, 24b ... lid,
30 ... heat supply equipment, 40 ... heat demand equipment,
31 ... heat supply chamber, 41 ... heat receiving chamber,
31a, 41a, 63a, 63b, 65a, 65b, 83a, 85a ... opening / closing door,
32 ... Heat supply fluid, 42, 42a ... Heat receiving fluid,
34, 44, 52, 64, 66, 84, 86 ... vacuum piping,
34a, 44a, 52a, 64a, 66a, 84a, 86a ... vacuum valve,
43 ... water vapor generator,
50, 60, 70, 80 ... heat transport system,
51 ... Transfer passage, 61 ... Transport forward, 62 ... Transfer return,
Q ... calorie, VP ... vacuum pump.

Claims (12)

A chemical heat storage material that stores heat by a normal reaction and dissipates heat by a reverse reaction, a fluid flow path that allows fluid to exchange heat in contact with the chemical heat storage material, and the chemical heat storage material and the fluid flow path inside. A heat storage container for housing,
In the heat storage stage to the chemical heat storage material, by introducing a heat supply fluid supplied from a heat supply facility into the fluid flow path and bringing it into contact with the chemical heat storage material, a positive reaction of the chemical heat storage material is caused. Heat storage,
In the heat release stage from the chemical heat storage material, a heat receiving fluid is introduced into the fluid flow path and brought into contact with the chemical heat storage material, thereby causing a reverse reaction of the chemical heat storage material to dissipate heat and the chemical heat storage material. A chemical heat storage reactor in which the heat receiving fluid is heated by the amount of heat radiated by the heat and led to the heat demand facility.   The heat storage container includes an inlet for introducing a heat supply fluid supplied from the heat supply facility into the fluid flow path, and a guide for deriving the heat receiving fluid from the fluid flow path to the heat demand facility. The chemical heat storage reactor according to claim 1, wherein the outlet has at least one opening.   The said opening part comprises the cover member for interrupting | blocking thermally so that the calorie | heat amount stored in the said chemical thermal storage material may not be dissipated outside, The chemical thermal storage reactor of Claim 2 characterized by the above-mentioned. The chemical heat storage material is a chemical heat storage material that stores heat as a dehydration reaction as a positive reaction and dissipates heat as a reverse reaction of a hydration reaction,
The heat supply fluid is a fluid having a temperature higher than the dehydration reaction temperature of the chemical heat storage material and causes contact with the chemical heat storage material to cause a dehydration reaction.
The heat receiving fluid is a fluid containing water vapor or moisture, and the amount of reaction water necessary for the hydration reaction of the chemical heat storage material or in contact with the chemical heat storage material in a state containing excess water As well as
The chemical heat storage material heats the heat-receiving fluid and / or the excess water according to the amount of heat radiated by a hydration reaction, and leads to the heat demand facility. The described chemical heat storage reactor. The chemical heat storage reactor according to any one of claims 1 to 4, a heat supply facility, and a heat demand facility,
The amount of heat supplied from the heat supply facility is supplied to the chemical heat storage reactor to store heat by a positive reaction of the chemical heat storage material,
Store or transfer the chemical heat storage reactor after heat storage away from the heat supply equipment,
Heat stored in the chemical heat storage reactor after storage or transfer is dissipated by the reverse reaction of the chemical heat storage material and used in the heat demand facility,
A heat transport system in which the chemical heat storage reactor after heat radiation is transferred to the heat supply facility separated from the heat demand facility to store heat again. The heat supply facility includes a heat supply chamber sealed from an external environment for supplying the amount of heat released to the chemical heat storage reactor,
The said heat demand equipment is equipped with the heat receiving chamber sealed from the external environment for supplying the heat quantity radiated | emitted from the said chemical thermal storage reactor to the said heat demand equipment. Heat transport system.   The heat supply chamber and the heat receiving chamber each include an opening / closing door for sealing the interior from the outside environment and accommodating the transferred chemical heat storage reactor from the outside environment to the inside. 6. The heat transport system according to 6. The heat supply chamber and the heat receiving chamber include a transfer passage sealed from an external environment for transferring the chemical heat storage reactor between them,
The heat transport system according to claim 6, wherein each of the heat supply chamber and the heat receiving chamber includes an open / close door for delivering the chemical heat storage reactor to and from the transfer passage.   The heat transport system according to claim 7 or 8, wherein the heat supply chamber, the heat receiving chamber, and / or the transfer passage includes a pressure reducing mechanism for maintaining the inside in a reduced pressure state. The heat supply chamber includes a heat supply preparation chamber sealed from the external environment,
The heat receiving chamber includes a heat receiving preparation chamber sealed from an external environment,
Each of the heat supply chamber and the heat receiving chamber includes an opening / closing door for delivering the chemical heat storage reactor between the heat supply preparing chamber or the heat receiving preparation chamber,
The heat transport according to claim 6, wherein each of the heat supply preparation chamber and the heat reception preparation chamber includes another open / close door for accommodating the chemical heat storage reactor from the outside environment. system. The heat supply chamber includes a heat supply preparation chamber sealed from the external environment,
The heat receiving chamber includes a heat receiving preparation chamber sealed from an external environment,
The heat supply preparation chamber and the heat reception preparation chamber comprise a transfer forward path and a transfer return path sealed from an external environment for transferring the chemical heat storage reactor between each other,
Each of the heat supply chamber and the heat receiving chamber includes an opening / closing door for delivering the chemical heat storage reactor between the heat supply preparing chamber or the heat receiving preparation chamber,
The heat supply preparation chamber and the heat reception preparation chamber each include an open / close door for delivering the chemical heat storage reactor between the transfer forward path and the transfer return path. Heat transfer system as described in.   The heat supply chamber and the heat reception chamber, the heat supply preparation chamber and the heat reception preparation chamber, and / or the transfer forward path and the transfer return path have a pressure reducing mechanism for maintaining the inside in a reduced pressure state. The heat transport system according to claim 10 or 11, characterized in that.