JP2015183883A - chemical heat storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical heat storage device capable of improving heating performance and cooling performance.SOLUTION: A chemical heat storage device 1 comprises a reactor 11 having chemical heat storage material stored therein; an evaporator 2 for heat exchanging with conditioned air 6; and heat exchanging means 4 for performing a heat exchanging between a heat carrier 61 heated by heat generated by hydration reaction of the chemical heat storage material and carrier steam 221 in a carrier flow passage 3. The chemical heat storage material radiates heat through the hydration reaction and stores heat through dehydration reaction. The evaporator 2 is communicated with the reactor 11 to generate the carrier steam 221 having reaction medium 22 evaporated. The chemical heat storage device 1 supplies overheated steam 222 got through heating of the carrier steam 221 by the heat exchanging means 4 to the reactor 11.

Description

  The present invention relates to a chemical heat storage device including a reactor incorporating a chemical heat storage material and an evaporator for supplying a reaction medium to the reactor.

  In recent years, vehicles such as automobiles have adopted an idling stop function for stopping an engine when the vehicle is stopped, such as waiting for a signal, in order to reduce the environmental load. In a state where the engine is stopped by the idling stop function, a heat pump using engine power for operating the vehicle air conditioner does not operate, so a heat storage evaporator equipped with a heat storage material or the like is used. Hybrid cars and electric cars are equipped with heat pumps that use electric compressors. However, the heat storage evaporator has a small heat storage capacity, and the electric heat pump consumes a large amount of power, so it is not suitable for long-time use or high-power use. Not suitable for. Therefore, at present, idling stops in large vehicles are limited to a short time, and for example, the practical application of the chemical heat storage device disclosed in Patent Document 1 is awaited.

  The chemical heat storage device of Patent Document 1 includes a reactor containing a chemical heat storage material that dissipates heat by a hydration reaction and stores heat by a dehydration reaction, and an evaporator that supplies steam to the reactor for hydration reaction of the chemical heat storage material. And a condensing part for condensing water vapor generated by the dehydration reaction. A reaction medium is stored in the evaporator, and the reaction medium is vaporized and supplied to the reactor. The heat generated by the hydration reaction of the chemical heat storage material incorporated in the reactor is used as a heating heat source. Further, the evaporator is used as a cooling heat source for cooling because cooling heat is generated by the latent heat of vaporization of the reaction medium.

JP2013-112310A

However, the chemical heat storage device disclosed in Patent Document 1 has the following problems.
In the chemical heat storage device of Patent Document 1, the hydration reaction of the chemical heat storage material built in the reactor proceeds inward from the surface of the chemical heat storage material. Therefore, as the hydration reaction of the chemical heat storage material proceeds, the pressure loss when the medium vapor penetrates inside the chemical heat storage material increases. Thereby, it becomes difficult for medium vapor | steam to osmose | permeate a chemical heat storage material, and the reactivity of a chemical heat storage material falls as the hydration reaction in a chemical heat storage material advances. Thus, when the reactivity of a chemical heat storage material falls, the hydration reaction amount of the medium vapor | steam in a chemical heat storage material will reduce, and the supply amount of the medium vapor | steam to a reactor will fall. Therefore, the generation amount of the medium vapor in the evaporator is reduced, and sufficient cooling heat cannot be obtained in the evaporator, so that the cooling performance is lowered. Moreover, also in a reactor, heating performance falls with the fall of the reactivity of a chemical heat storage material.

  The present invention has been made in view of such a background, and an object of the present invention is to provide a chemical heat storage device that can improve heating performance and cooling performance.

One aspect of the present invention is a reactor that contains a chemical heat storage material that dissipates heat by a hydration reaction and stores heat by a dehydration reaction;
An evaporator that communicates with the reactor by a medium flow path, generates a medium vapor obtained by evaporating the reaction medium, and exchanges heat with conditioned air;
A heating medium heated by heat generated by the hydration reaction of the chemical heat storage material, and heat exchange means for exchanging heat between the medium vapor in the medium flow path,
The chemical heat storage device is configured to supply high-temperature and high-pressure superheated steam obtained by heating the medium vapor by the heat exchange means to the reactor.

  In the chemical heat storage device, the medium vapor expands by being heated by the heat exchange means, and becomes high-temperature and high-pressure superheated vapor. Therefore, the superheated steam can easily penetrate into the chemical heat storage material built in the reactor as compared with the medium steam, and can promote the hydration reaction in the chemical heat storage material. Moreover, with the promotion of the hydration reaction in the chemical heat storage material, the amount of hydration reaction of the medium vapor in the chemical heat storage material increases. Therefore, generation of the medium vapor in the evaporator is promoted. Thereby, the heat dissipation of the cold heat in the evaporator can be increased. Moreover, the hydration reaction of the said chemical heat storage material is accelerated | stimulated, and the thermal radiation amount of the heat | fever in the said reactor can be increased. Therefore, the heating performance and cooling performance of the chemical heat storage device can be improved.

  In addition, the medium vapor is heated using the heat generated in the reactor to generate the superheated vapor. Therefore, it is not necessary to newly provide a heat source for heating the medium vapor. Therefore, the heating performance and the cooling performance of the chemical heat storage device can be easily improved without complicating the structure of the chemical heat storage device and increasing the cost.

  As described above, according to the chemical heat storage device, the heating performance and the cooling performance can be improved.

Explanatory drawing which shows the structure of the chemical heat storage apparatus in Example 1. FIG. Explanatory drawing which shows the structure of the chemical heat storage apparatus in Example 2. FIG. Explanatory drawing which shows the structure of the chemical heat storage apparatus in Example 3. FIG. Explanatory drawing which shows the structure of the chemical heat storage apparatus in Example 4. FIG. Explanatory drawing which shows the structure of the chemical heat storage apparatus in Example 5. FIG. Explanatory drawing which shows the structure of the chemical heat storage apparatus in Example 6. FIG.

  In the chemical heat storage device, the medium flow path is disposed at an upstream on-off valve disposed at a position closer to the evaporator than the heat exchange means, and at a position closer to the reactor than the heat exchange means. A downstream open / close valve, and the upstream open / close valve is opened and the medium vapor is introduced into the medium flow path with the downstream open / close valve closed, and then the upstream open / close valve is closed. The medium vapor is converted into the superheated steam by exchanging heat between the medium vapor introduced between the upstream side open / close valve and the downstream side open / close valve and the thermal medium, and the superheated steam is converted into the superheated steam. It is preferably configured to be fed to the reactor. In this case, the superheated steam can be made to have a higher pressure by heating the medium vapor in a space closed by the upstream on-off valve and the downstream on-off valve in the medium flow path. . Thereby, the hydration reaction in the chemical heat storage material built in the reactor can be further promoted.

  The medium flow path is preferably provided with a downstream storage container that is disposed at a position closer to the reactor than the heat exchanging means and stores the superheated steam. In this case, the superheated steam can be stably supplied to the reactor by storing the superheated steam in the downstream storage container.

  Moreover, it is preferable that the said heat exchange means is provided in the position of the said evaporator side rather than the said heat exchange means, and is provided with the upstream storage container for storing the said medium vapor | steam. In this case, it is possible to prevent the superheated steam from flowing back to the reactor side.

  The medium flow path includes a main flow path connected to the evaporator and a branch flow path branched into a plurality from the main flow path, and each of the medium flow paths is connected to the evaporator by the branch flow path. It is preferable that a plurality of the reactors are provided, and each branch flow path is provided with a branch on / off valve that opens and closes the branch flow path. In this case, at the initial stage of the reaction when the chemical heat storage material has high hydration reactivity and the medium vapor is stably generated, the medium vapor can be supplied to the reactor through the bypass channel. it can. Thereby, in the initial stage of the reaction, the pressure loss when the medium vapor is supplied to the reactor can be reduced, and the medium vapor can be efficiently supplied to the reactor. On the other hand, in the late stage of the reaction, as described above, the medium vapor is circulated through the medium flow path, and the medium vapor is heated by the heat exchange means to generate the superheated vapor. Thereby, the hydration reactivity of the said chemical heat storage material can be improved, and the heating performance and the cooling performance in the said chemical heat storage apparatus can be improved.

Example 1
The Example concerning the said chemical heat storage apparatus is demonstrated with reference to FIG.
As shown in FIG. 1, the chemical heat storage device 1 is heated by heat generated by a hydration reaction of a reactor 11 containing a chemical heat storage material, an evaporator 2 that exchanges heat with conditioned air 6, and the chemical heat storage material. The heat exchange means 4 that exchanges heat between the heated heat medium 61 and the medium vapor 221 that flows through the medium flow path 3 is provided. A chemical heat storage material dissipates heat by a hydration reaction and stores heat by a dehydration reaction. The evaporator 2 communicates with the reactor 11 by the medium flow path 3 to generate medium vapor 221 in which the reaction medium 22 is evaporated. The chemical heat storage device 1 is configured to supply a high-temperature and high-pressure superheated steam 222 obtained by heating the medium vapor 221 by the heat exchange means 4 to the reactor 11.

This will be described in more detail below.
The chemical heat storage device 1 shown in this example includes a reactor 11 containing a chemical heat storage material and an evaporator 2 for supplying a medium vapor 221 to the reactor 11. The reactor 11 is used as a heat source for heating in the air conditioning for vehicles, and the evaporator 2 is used as a cooling heat source for cooling in the air conditioning for vehicles.

The reactor 11 has a chemical heat storage material and a container containing the chemical heat storage material. The chemical heat storage material stores heat with a dehydration reaction and dissipates heat with a hydration reaction.
The chemical heat storage material is formed of, for example, calcium hydroxide (Ca (OH) 2). In the reactor 11, heat storage and heat release are reversibly repeated as described below.
Ca (OH) 2 Ｃａ CaO + H2O
In addition to calcium hydroxide, a chemical heat storage material that can reversibly store heat and release heat can be used.

Further, the reactor 11 is provided with a heating channel (not shown) for heating the chemical heat storage material and a heat medium flow channel 5 for releasing the heat radiated by the chemical heat storage material to the outside.
For example, an exhaust line that circulates engine exhaust gas is connected to the heating flow path, and the chemical heat storage material is heated by the high-temperature exhaust gas supplied from the exhaust line. In addition to exhaust gas, it is possible to use an electric heater or the like that operates by receiving supply of electric power from surplus generated during deceleration, etc., from a motor generator, alternator or power generation type retarder mounted on the vehicle. .

  As shown in FIG. 1, the heat medium passage 5 connects the reactor 11 and the heat exchange means 4 and is formed so as to be able to circulate the heat medium 61 heated by the chemical heat storage material. The heating medium 61 of this example is conditioned air 6 used for heating a vehicle air conditioner, and is blown into the reactor 11 by a blower fan (not shown). The thermal medium 61 absorbs the heat generated by the hydration reaction of the chemical heat storage device 1 and then is sent to the heat exchange means 4.

  The reactor 11 and the evaporator 2 are communicated with each other by a medium flow path 3 through which the medium vapor 221 for hydration reaction with the chemical heat storage material or the medium vapor 221 generated by the dehydration reaction of the chemical heat storage material is circulated. The reactor 11, the evaporator 2, and the medium flow path 3 are hermetically connected to each other at their connecting portions, and these internal spaces are evacuated. Thereby, the reaction medium 22 in the evaporation condensing chamber 21 of the evaporator 2 is easily evaporated.

In the medium flow path 3, a heat exchanging means 4 for exchanging heat between the heat medium 61 and the medium vapor 221, and an upstream side open / close valve 311 provided on the evaporator 2 side of the heat exchanging means 4 And an upstream on-off valve 312 provided on the reactor 11 side of the heat exchange means 4.
The heat exchanging means 4 is connected to the reactor 11 by the heat medium flow path 5 that circulates the heating medium 61 and is disposed in the medium flow path 3 that circulates the medium vapor 221. As the heat exchange means 4, for example, a heat exchanger having a piping part that circulates the heating medium 61 and heat transfer fins extended from the piping part can be used.
The upstream side open / close valve 311 and the upstream side open / close valve 312 are configured to be able to open and close the medium flow path 3 independently. As the upstream opening / closing valve 311 and the upstream opening / closing valve 312, an electromagnetic valve or the like that can be opened and closed by electronic control can be used.

  For the evaporator 2 connected to the reactor 11 via the medium flow path 3, an evaporation condenser having an evaporation condensation chamber 21 for generating the medium vapor 221 and condensing the medium vapor 221 is used. A reaction medium 22 is stored in the evaporative condensation chamber 21, and is configured to generate medium vapor 221 due to a vapor pressure difference with the reactor 11 when the chemical heat storage material is hydrated. The evaporator 2 is provided with a blower (not shown) for cooling the evaporation condensing chamber 21. By using this blower, the medium vapor 221 flowing into the evaporating and condensing chamber 21 is cooled to be condensed into the reaction medium 22.

Next, the operation of the chemical heat storage device 1 will be described.
When the vehicle stops and the engine stops, the chemical heat storage device 1 operates. At this time, the chemical heat storage material is in a dehydrated heat storage state.
At the initial stage of the reaction when the hydration reaction is highly reactive in the chemical heat storage material, the upstream side open / close valve 311 and the upstream side open / close valve 312 are opened. The medium vapor 221 flowing in the medium flow path 3 is heated and expanded by the heat exchange means 4 and supplied to the reactor 11 as superheated vapor 222.

  Then, in the late stage of the reaction when the hydration reaction in the chemical heat storage material progresses and the reactivity decreases, the upstream side on-off valve 311 is opened and the upstream side on-off valve 312 is closed, and the medium vapor 221 is introduced into the medium flow path 3. To do. Then, the upstream side open / close valve 311 is closed, and between the medium vapor 221 introduced between the upstream side open / close valve 311 and the upstream side open / close valve 312 and the thermal medium 61 heated by the heat radiation of the chemical heat storage material. Heat exchange is performed to heat the medium vapor 221. Thereby, the superheated steam 222 can be made into a high pressure. The superheated steam 222 is supplied to the reactor 11 by opening the upstream opening / closing valve 312.

Next, the effect of this example is demonstrated.
In the chemical heat storage device 1, the medium vapor 221 expands by being heated by the heat exchange means 4 and becomes high-pressure superheated vapor 222. Therefore, the superheated steam 222 is easier to penetrate into the chemical heat storage material built in the reactor 11 than the medium steam 221 and can promote the hydration reaction in the chemical heat storage material. Moreover, with the promotion of the hydration reaction in the chemical heat storage material, the amount of hydration reaction of the medium vapor 221 in the chemical heat storage material increases. Accordingly, the generation of the medium vapor 221 in the evaporator 2 is promoted. Thereby, the thermal radiation amount of the cold heat in the evaporator 2 can be increased. Further, by promoting the hydration reaction of the chemical heat storage material, it is possible to increase the amount of heat released from the reactor 11. Therefore, the heating performance and the cooling performance in the chemical heat storage device 1 can be improved.

  Moreover, the medium vapor | steam 221 is heated using the warm heat generated in the reactor 11, and the superheated vapor | steam 222 is produced | generated. Therefore, it is not necessary to newly provide a heat source for heating the medium vapor 221. Therefore, the heating performance and the cooling performance of the chemical heat storage device 1 can be easily improved without complicating the structure of the chemical heat storage device 1 and increasing the cost.

  Further, in the medium flow path 3, an upstream on-off valve 311 disposed at a position closer to the evaporator 2 than the heat exchange means 4, and an upstream side disposed at a position closer to the reactor 11 than the heat exchange means 4. An on-off valve 312 is provided, and after the upstream on-off valve 311 is opened and the upstream on-off valve 312 is closed, the medium vapor 221 is introduced into the medium flow path 3, and then the upstream on-off valve 311 is closed, By exchanging heat between the medium vapor 221 introduced between the upstream side open / close valve 311 and the upstream side open / close valve 312 and the heating medium 61, the medium vapor 221 becomes the superheated steam 222, and the superheated steam 222 becomes the reactor 11. It is configured to supply to. Therefore, by heating the medium vapor 221 in the space closed by the upstream on-off valve 311 and the upstream on-off valve 312 in the medium flow path 3, the superheated steam 222 can be set to a higher pressure. Thereby, the hydration reaction in the chemical heat storage material incorporated in the reactor 11 can be further promoted.

  As described above, according to the chemical heat storage device 1 of this example, the heating performance and the cooling performance can be improved.

(Example 2)
This example shows the example which changed the structure of the chemical heat storage apparatus in Example 1, as shown in FIG.
The medium flow path 3 of the chemical heat storage device 1 of this example includes a downstream storage container 321 arranged at a position closer to the reactor 11 than the heat exchange means 4. The downstream storage container 321 can store the superheated steam 222 in its internal space.
Other configurations are the same as those of the first embodiment. Of the reference numerals used in this example or the drawings relating to this example, the same reference numerals as those used in the first embodiment represent the same components as in the first embodiment unless otherwise specified.

According to the chemical heat storage device 1 of this example, the superheated steam 222 can be stably supplied to the reactor 11 by storing the superheated steam 222 in the downstream storage container 321.
Also in this example, the same effects as those of the first embodiment can be obtained.

(Example 3)
This example shows the example which changed the structure of the chemical thermal storage apparatus in Example 1, as shown in FIG.
The medium flow path 3 of the chemical heat storage device 1 of this example includes an upstream storage container 322 arranged at a position closer to the evaporator 2 than the heat exchange means 4. The upstream storage container 322 can store the medium vapor 221 in the internal space.
Other configurations are the same as those of the first embodiment. Of the reference numerals used in this example or the drawings relating to this example, the same reference numerals as those used in the first embodiment represent the same components as in the first embodiment unless otherwise specified.

According to the chemical heat storage device 1 of this example, it is possible to prevent the superheated steam 222 from flowing back to the reactor 11 side.
Also in this example, the same effects as those of the first embodiment can be obtained.

Example 4
This example shows the example which changed the structure of the chemical thermal storage apparatus in Example 1, as shown in FIG.
The chemical heat storage device 1 of this example is branched from the medium flow path 3, the part closer to the reactor 11 than the heat exchange means 4 in the medium flow path 3, and the evaporator 2 than the heat exchange means 4 in the medium flow path 3. A bypass channel 33 that communicates with the site on the side is provided. The reactor side end 331 of the bypass flow path 33 is connected to the medium flow path 3 between the reactor 11 and the upstream side open / close valve 312. The evaporator-side end 332 of the bypass flow path 33 is connected to a bypass open / close valve 333 formed of a three-way valve provided in the medium flow path 3. The bypass opening / closing valve 333 also serves as the upstream opening / closing valve 311. By opening the medium flow path 3 and closing the bypass flow path 33, the medium vapor 221 is transferred to the medium flow path 3 provided with the heat exchange means 4. Can be distributed. Moreover, the medium flow path 221 can be circulated to the bypass flow path 33 by closing the medium flow path 3 and opening the bypass flow path 33 by the bypass opening / closing valve 333.
Other configurations are the same as those of the first embodiment. Of the reference numerals used in this example or the drawings relating to this example, the same reference numerals as those used in the first embodiment represent the same components as in the first embodiment unless otherwise specified.

According to the chemical heat storage device 1 of this example, the hydration reactivity in the chemical heat storage material is high, and the medium vapor 221 is sent to the reactor 11 through the bypass channel 33 in the initial reaction where the medium vapor 221 is stably generated. Can be supplied with. Thereby, at the initial stage of the reaction, the pressure loss when the medium vapor 221 is supplied to the reactor 11 can be reduced, and the medium vapor 221 can be efficiently supplied to the reactor 11. On the other hand, in the late stage of the reaction, as described above, the medium vapor 221 is circulated to the medium flow path 3, the medium vapor 221 is heated by the heat exchange means 4, and superheated vapor 222 is generated. Thereby, the hydration reactivity of a chemical thermal storage material can be improved, and the heating performance and the cooling performance in the chemical thermal storage apparatus 1 can be improved.
Also in this example, the same effects as those of the first embodiment can be obtained.

(Example 5)
This example shows the example which changed the structure of the chemical thermal storage apparatus in Example 1, as shown in FIG.
The chemical heat storage device 1 of this example includes two reactors 1, a first reactor 111 and a second reactor 112. The first reactor 111 and the second reactor 112 are connected to the first heat exchange means 41 and the second heat exchange means 42 as the heat exchange means 4 by the first heat medium flow path 502 and the second heat medium flow path 503. Are connected to each. The medium flow path 3 has a main flow path 344 connected to the evaporator 2, and a first branch flow path 342 and a second branch flow path 343 branched from the main flow path 344. The first reactor 111 and the second reactor 112 are connected to the first branch channel 342 and the second branch channel 343, respectively. That is, the first reactor 111 and the second reactor 112 are connected to the evaporator 2 via the main flow path 344, the first branch flow path 342, and the second branch flow path 343.

A branch opening / closing valve 341 composed of a three-way valve is provided at a branch point between the first branch channel 342 and the second branch channel 343 in the medium channel 3. The superheated steam 222 can be supplied to the first reactor 111 by opening the first branch flow path 342 and closing the second branch flow path 343 by the branch opening / closing valve 341. Further, the superheated steam 222 can be supplied to the second reactor 112 by closing the first branch flow path 342 and opening the second branch flow path 343 by the branch opening / closing valve 341. That is, according to the branch opening / closing valve 341, the first branch channel 342 and the second branch channel 343 are provided in the same manner as when the first branch channel 342 and the second branch channel 343 are each provided with a stop valve. Can be opened and closed in turn.
Other configurations are the same as those of the first embodiment. Of the reference numerals used in this example or the drawings relating to this example, the same reference numerals as those used in the first embodiment represent the same components as in the first embodiment unless otherwise specified.

According to the chemical heat storage device 1 of this example, the amount of medium vapor 221 generated in the evaporator 2 can be increased by alternately hydrating the chemical heat storage materials built in the plurality of reactors 11. Therefore, the heating performance in the plurality of reactors 11 and the cooling performance in the evaporator 2 can be improved.
Also in this example, the same effects as those of the first embodiment can be obtained.

(Example 6)
This example shows the example which changed the structure of the chemical thermal storage apparatus in Example 1, as shown in FIG.
The heat exchanging means 4 of the chemical heat storage device 1 of the present example is configured to be able to circulate a heating medium 61 heated by the reactor 11 and a cooling medium 63 that transmits the cooling heat for cooling the medium flow path 3. Yes. Between the reactor 11 and the heat exchanging means 4, a heat medium flow path 501 for circulating the hot medium 61 or the cold medium 63 is provided.

  The heat medium flow path 501 includes a reactor side flow path 51 connected to the reactor 11, and a first heat flow path 52 for directly introducing the heat medium 61 from the reactor side flow path 51 directly into the vehicle interior. The second heat flow channel 53 for supplying the heat medium 61 from the reactor side flow channel 51 to the heat exchange means 4 is provided. The reactor side flow path 51, the 1st thermal flow path 52, and the 2nd thermal flow path 53 are connected by the reactor side on-off valve 56 which consists of a three-way valve. The heat medium passage 501 includes an outside air introduction passage 54 for introducing outside air as the cooling medium 63, and a heat exchange means side passage 55 connected to the heat exchange means 4. The second heat flow channel 53, the outside air introduction flow channel 54, and the heat exchange means side flow path 55 are connected by a heat exchange means side opening / closing valve 57 comprising a three-way valve.

When supplying the heat medium 61 to the heat exchanging means 4, the first heat flow channel 52 is closed by the reactor side opening / closing valve 56, and the reactor side flow channel 51 and the second heat flow channel 53 are communicated. . Further, the heat exchange means side opening / closing valve 57 closes the outside air introduction flow path 54 so that the second thermal flow path 53 and the heat exchange means side flow path 55 are communicated.
Further, when supplying the cooling medium 63 to the heat exchanging means 4, the reactor-side opening / closing valve 56 closes the second thermal channel 53, and the reactor-side channel 51 and the first thermal channel 52 are connected. Communicate. Further, the second heat flow passage 53 is closed by the heat exchange means side opening / closing valve 57, and the outside air introduction flow path 54 and the heat exchange means side flow passage 55 are communicated.
Other configurations are the same as those of the first embodiment. Of the reference numerals used in this example or the drawings relating to this example, the same reference numerals as those used in the first embodiment represent the same components as in the first embodiment unless otherwise specified.

According to the chemical heat storage device 1 of this example, the pressure in the medium flow path 3 can be reduced by circulating the cooling medium 63 in the heat exchange means 4 and cooling the medium vapor 221 in the medium flow path 3. . As a result, the medium vapor 221 can be easily introduced into the medium flow path 3.
Also in this example, the same effects as those of the first embodiment can be obtained.

  In the said Example 1-the said Example 6, the evaporator 2 which forms the evaporator 2 and a condenser integrally is used. In addition to this, the evaporator 2 and the condenser may be provided separately from each other.

DESCRIPTION OF SYMBOLS 1 Chemical heat storage apparatus 11 Reactor 2 Evaporator 22 Reaction medium 221 Medium vapor | steam 222 Superheated steam 3 Medium flow path 4 Heat exchange means 6 Air-conditioned air 61 Heating medium

Claims (7)

A reactor (11) containing a chemical heat storage material that dissipates heat by a hydration reaction and stores heat by a dehydration reaction;
The evaporator (2) communicated with the reactor (11) by the medium flow path (3), generates a medium vapor (221) by evaporating the reaction medium (22), and exchanges heat with the conditioned air (6). When,
Heat exchange means for exchanging heat between the heating medium (61) heated by the heat generated by the hydration reaction of the chemical heat storage material and the medium vapor (221) in the medium flow path (3) ( 4) and
A high-temperature and high-pressure superheated steam (222) obtained by heating the medium vapor (221) by the heat exchange means (4) is supplied to the reactor (11). Chemical heat storage device (1).   In the medium flow path (3), an upstream on-off valve (311) disposed at a position closer to the evaporator (2) than the heat exchange means (4), and more than the heat exchange means (4) An upstream on-off valve (312) disposed at a position on the reactor (11) side, the upstream on-off valve (311) being opened and the upstream on-off valve (312) being closed After the medium vapor (221) is introduced into the medium flow path (3), the upstream side open / close valve (311) is closed, and the upstream side open / close valve (311), the upstream side open / close valve (312), By exchanging heat between the medium vapor (221) and the heating medium (61) introduced during the period, the medium vapor (221) becomes the superheated steam (222), and the superheated steam (222) It is configured to supply to the reactor (11). Chemical heat storage device according to claim 1, (1).   A downstream storage container (321) for storing the superheated steam (222) disposed in the medium channel (3) at a position closer to the reactor (11) than the heat exchange means (4). The chemical heat storage device (1) according to claim 1 or 2, characterized by comprising:   The heat exchanging means (4) is disposed at a position closer to the evaporator (2) than the heat exchanging means (4), and has an upstream storage container (322) for storing the medium vapor (221). The chemical heat storage device (1) according to any one of claims 1 to 3, wherein the chemical heat storage device (1) is provided.   Branch from the medium flow path (3), the heat exchange means (4) in the medium flow path (3) on the side of the reactor (11) and the heat exchange in the medium flow path (3) A bypass flow path (33) communicating with the part closer to the evaporator (2) than the means (4) and a bypass open / close valve (333) for opening and closing the bypass flow path (33) are provided. The chemical heat storage device (1) according to any one of claims 1 to 4.   The medium flow path (3) includes a main flow path (344) connected to the evaporator (2) and branch flow paths (342, 343) branched from the main flow path (344). A plurality of the reactors (11) connected to the evaporator (2) are provided by the branch flow paths (342, 343), and each branch flow path (342, 343) has the branch flow. The chemical heat storage device (1) according to any one of claims 1 to 5, further comprising a branch on-off valve (341) for opening and closing the passages (342, 343).   The heat exchanging means (4) is configured to be able to circulate the hot medium (61) and a cold medium (63) that transmits cold heat for cooling the medium flow path (3). The chemistry according to any one of claims 1 to 6, characterized in that the heat medium (61) and the cold medium (63) and the medium vapor (221) are configured to exchange heat. Thermal storage device (1).

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