JP2016216593A - Reaction material, heat exchanger and chemical heat pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the reduction of the reaction rate in a reaction material in which heat storage and heat release are repeated.SOLUTION: Provided is a reaction material for a heat exchanger, being gypsum powder with a grain size of 1 μm or lower.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a reaction material, a heat exchanger, and a chemical heat pump.

  In recent years, a heat recovery system such as a chemical heat pump that effectively uses surplus exhaust heat has attracted attention from the viewpoint of energy saving and the like.

  The chemical heat pump is a system for storing and releasing heat by utilizing a heat generation and heat absorption phenomenon associated with a reversible chemical reaction between a reaction medium and a heat storage material (hereinafter referred to as “reaction material”). Chemical heat pumps generally have a reactor with a heat exchanger filled with a reactant that reacts reversibly with the reaction medium, an evaporator that evaporates the liquid reaction medium, and condenses the gaseous reaction medium. A condenser is connected via an opening / closing mechanism.

  As a reaction material used for a chemical heat pump, for example, calcium oxide (CaO), magnesium oxide (MgO), and the like are known (for example, see Patent Document 1 or 2).

  However, when the heat storage / heat radiation operation is repeated in the chemical heat pump, there is a problem that the reaction rate of the above-described reaction materials such as calcium oxide and magnesium oxide decreases.

Here, type III anhydrous gypsum which is calcium sulfate (CaSO ₄ ) can be used as the reaction material. In this case, at the time of heat release, the type III anhydrous gypsum causes an exothermic reaction with the reaction medium to become half-water gypsum, and at the time of heat storage, the half-water gypsum causes an endothermic reaction with the reaction medium to become the type III anhydrous gypsum.

  When using type III anhydrous gypsum as the reaction material in this way, the crystal structure changes to more stable type II anhydrous gypsum during repeated heat storage and heat dissipation, and the reaction rate decreases. was there.

  This invention is made | formed in view of the above, Comprising: It aims at suppressing the reaction rate fall of the reaction material in which heat storage and heat dissipation are repeated.

  According to one aspect of the present invention, the reaction material for a heat exchanger is a gypsum powder having a particle size of 1 μm or less.

  According to the embodiment of the present invention, it is possible to suppress a decrease in the reaction rate of a reaction material in which heat storage and heat dissipation are repeated.

It is the schematic which illustrates the whole structure of the chemical heat pump in embodiment. It is a figure for demonstrating the heat storage operation | movement of a chemical heat pump. It is a figure for demonstrating the thermal radiation operation | movement of a chemical heat pump. It is a perspective view which illustrates the composition of the heat exchanger in an embodiment. It is a bottom view which illustrates the composition of the heat exchanger in an embodiment. It is a figure which illustrates other composition of a heat exchanger in an embodiment. It is a figure which illustrates the relationship between a gypsum powder particle size and the type II anhydrous gypsum ratio after a thermal radiation / thermal storage test.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description may be omitted.

<Configuration and operation of chemical heat pump>
FIG. 1 is a schematic view illustrating the overall configuration of a chemical heat pump 10 according to an embodiment.

  As shown in FIG. 1, the chemical heat pump 10 includes a reactor 100, a condenser 200, and an evaporator 300.

  The reactor 100 has a heat exchanger 110 inside the casing. The heat exchanger 110 stores a reaction material that reversibly generates heat and endotherm with the reaction medium, and the heat medium is introduced from the heat medium inlet 111. The heat medium introduced into the heat exchanger 110 is discharged from the heat medium discharge port 112 through the flow path inside the heat exchanger 110. The heat medium is oil such as silicon oil.

  The heat exchanger 110 accommodates a reaction material that reacts exothermically and endothermically with the reaction medium, releases heat to the heat medium when the reaction material reacts exothermically with the reaction medium, and the reaction material undergoes endothermic reaction with the reaction medium. Stores heat from the heat medium.

In this embodiment, gypsum (calcium sulfate (CaSO ₄ )) that reversibly absorbs heat and generates heat with water (H ₂ O) as a reaction medium is accommodated in the heat exchanger 110 as a reaction material. When the reaction material is gypsum, an endothermic / exothermic reaction represented by the following formula (1) occurs using water as a reaction medium.

CaSO ₄ + 0.5H ₂ O (gas) ⇔ CaSO ₄ · 0.5H ₂ O + 32.89kJ… (1)
When the rightward reaction of Formula (1) occurs, the reaction material dissipates heat to the heat medium in the heat exchanger 110, and the heat medium whose temperature has risen is discharged from the heat exchanger 110. In addition, when a leftward reaction of Formula (1) occurs, the reaction material stores the heat of the heat medium in the heat exchanger 110, and the heat medium whose temperature has decreased is discharged from the heat exchanger 110.

  The condenser 200 is an example of a reaction medium recovery unit, and has a low-temperature heat source 210 inside. The condenser 200 is connected to the reactor 100 via the first connection pipe 11 and the first valve 21, and collects water vapor generated by an endothermic reaction during heat storage from the reactor 100.

  During the heat storage operation in the chemical heat pump 10, the leftward endothermic reaction of Formula (1) proceeds in the heat exchanger 110, and water vapor is generated from the hydrate of the reaction material. During such a heat storage operation, as shown in FIG. 2, the first valve 21 is opened, and the condenser 200 collects water vapor from the reactor 100 through the first connection pipe 11. The water vapor collected in the condenser 200 is cooled and liquefied by the low-temperature heat source 210.

  The low-temperature heat source 210 includes a pipe through which a low-temperature fluid such as water flows and a plurality of fins provided around the pipe, and cools and liquefies the steam recovered from the reactor 100.

  Further, the condenser 200 is connected to the evaporator 300 via the third connection pipe 13 and the third valve 23, and is liquefied through the third connection pipe 13 when the third valve 23 is appropriately opened. Water is supplied to the evaporator 300.

  The evaporator 300 is an example of a reaction medium supply device, and has a high-temperature heat source 310 inside. The evaporator 300 is connected to the reactor 100 via the second connection pipe 12 and the second valve 22, and supplies water vapor as a reaction medium to the reactor 100.

  In the evaporator 300, the water stored inside is heated by the high temperature heat source 310 to become water vapor. At the time of heat release operation in the chemical heat pump, as shown in FIG. 3, the second valve 22 is opened, and the water vapor generated in the evaporator 300 is supplied to the reactor 100 through the second connection pipe 12. When water vapor is supplied into the reactor 100, the rightward exothermic reaction of Formula (1) proceeds in the heat exchanger 110, and the reaction material dissipates heat to the heat medium.

  The high-temperature heat source 310 includes a pipe through which a high-temperature fluid such as water flows and a plurality of fins provided around the pipe, and heats water stored in the evaporator 300 to generate water vapor.

  The chemical heat pump 10 has the above-described configuration. The reaction material accommodated in the heat exchanger 110 performs an endothermic reaction with the reaction medium, stores the heat of the heat medium, and performs an exothermic reaction to generate a heat medium. Operates to dissipate heat.

  Note that the reactor 100 may be provided with a plurality of heat exchangers 110. Further, the condenser 200 and the evaporator 300 are not limited to the above configuration as long as the reaction medium can be supplied to and recovered from the reactor 100.

<Configuration of heat exchanger>
FIG. 4 is a perspective view illustrating the configuration of the heat exchanger 110 in the embodiment. FIG. 5 is a bottom view illustrating the configuration of the heat exchanger 110 in the embodiment.

  4 and 5, the heat exchanger 110 includes a heat medium introduction port 111, a heat medium discharge port 112, an introduction tank 113, a discharge tank 114, a plate fin 115, a corrugated fin 116, and a covering material 117. .

  The heat exchanger 110 includes a stacked body 120 in which plate fins 115 and corrugated fins 116 are alternately stacked between an introduction tank 113 and a discharge tank 114 provided to face each other. In the laminated body 120, a reaction material is filled in a gap between the plate fin 115 and the corrugated fin 116, and both surfaces are covered with a covering material 117.

  The introduction tank 113, the discharge tank 114, the plate fin 115, and the corrugated fin 116 are made of a metal material such as an aluminum alloy, for example.

  The introduction tank 113 and the discharge tank 114 each have a hollow box shape. Each plate fin 115 has a heat medium flow path formed therein, and one end of the flow path communicates with the internal space of the introduction tank 113, and the other end of the flow path communicates with the internal space of the discharge tank 114. Is provided. The heat medium guided from the heat medium introduction port 111 to the introduction tank 113 flows through the flow path in each plate fin 115 and is discharged from the heat medium discharge port 112 provided in the discharge tank 114.

  Each corrugated fin 116 has a continuous wave shape in which a plate-like member is bent, and is provided between the plate fins 115. Each corrugated fin 116 is sandwiched vertically 2 in FIG. 4 so that heat generated by the reaction material filled between the plate fins 115 can be transferred to the heat medium flowing through the flow path in the plate fin 115. Two plate fins 115 are provided so as to contact both.

The gap between the plate fin 115 and the corrugated fin 116 is filled with gypsum (calcium sulfate (CaSO ₄ )) powder as a reaction material.

Here, gypsum is classified into anhydrous gypsum (CaSO ₄ ), hemihydrate gypsum (CaSO ₄ .0.5H ₂ O), and dihydrate gypsum (CaSO ₄ .2H ₂ O). Anhydrous gypsum is classified into type I, type II, and type III depending on the crystal system. When gypsum is used as a reaction material, when the type III anhydrous gypsum hydrates and undergoes phase transition to hemihydrate gypsum, the rightward exothermic reaction of formula (1) occurs, and the hemihydrate gypsum dehydrates to form type III anhydrous gypsum. When the phase transition occurs, the leftward endothermic reaction of formula (1) occurs.

  Openings between the plate fins 115 and the corrugated fins 116 in the laminate 120 are covered with a covering material 117 so that the filled gypsum powder does not leak and scatter. The covering material 117 is, for example, a sheet formed of a porous material having a large number of micropores, and is provided on both surfaces (the front surface and the back surface in FIG. 4) of the laminate 120, respectively.

  The water vapor as the reaction medium reaches the gypsum powder filled between the plate fins 115 and the corrugated fins 116 through the fine holes of the covering material 117 and causes an exothermic reaction with the gypsum powder. Further, the water vapor generated by the endothermic reaction of the gypsum powder is released to the outside of the heat exchanger 110 through the fine holes of the covering material 117.

  Note that the covering material 117 may be provided so as to cover the entire laminated body 120, or may be provided on a part of the laminated body 120. In addition, the laminate 120 may not be provided with the covering material 117. In the absence of the covering material 117, the operation of the reactor 100 under operating conditions in which a rapid change in water vapor pressure does not occur prevents the gypsum powder from scattering.

  The heat exchanger 110 is installed in the reactor 100 so that the surfaces of the laminate 120 on which the coating material 117 is provided are the upper surface and the lower surface (the vertical direction in FIG. 5 is the vertical direction). May be. In this case, the lower surface of the laminate 120 is covered with a flat member made of, for example, a metal material instead of the covering material 117 formed of a porous material, and the upper surface is removed by removing the covering material 117 on the upper surface. You may open it.

  FIG. 6 is a diagram illustrating another configuration of the heat exchanger in the embodiment. A heat exchanger 130 shown in FIG. 6 includes a heat medium pipe 131 and a housing 134, and gypsum powder as a reaction material is filled in the housing 134.

  The heat medium pipe 131 includes a pipe 132 through which the heat medium flows and a plurality of fins 133 having a rectangular plate shape. The tube 132 constitutes a flow path through which the heat medium flows. The fins are arranged at intervals from each other along the flow path of the heat medium. Each fin has a tube 132 inserted into a through-hole formed in the center, and is fixed around the tube 132. The tube 132 and the fin 133 are made of a metal material such as an aluminum alloy, for example.

  The housing 134 has a rectangular box shape and is provided so as to surround the plurality of fins 133 of the heat medium pipe 131. The interior of the housing 134 is filled with gypsum powder as a reaction material. The gypsum powder is filled around the tube 132 and between the fins 133. The housing 134 is made of a porous material having a large number of micropores, and can pass water vapor, which is a reaction medium of gypsum powder filled therein.

  Water vapor as a reaction medium reaches the gypsum powder filled through the fine holes of the housing 134 and causes an exothermic reaction with the gypsum powder. In addition, water vapor generated by the endothermic reaction of the gypsum powder is released to the outside of the heat exchanger 130 through the fine holes of the housing 134.

  Note that the heat medium pipe 131 and the housing 134 are not limited to the above configuration as long as heat can be transferred between the gypsum powder as a reaction material and the heat medium. The flow path configuration by the tube 132, the number and shape of the fins 133 may be different from the configuration illustrated in FIG. The housing 134 may have a shape other than the rectangular box shape as long as it can hold gypsum powder as a reaction material filled around the heat medium tube 131.

  Further, the housing 134 may be formed of at least a part other than a porous material. Further, the housing 134 may be formed so as to surround the fins 133 using, for example, a metal material. In this case, for example, at least one opening is formed on the upper surface of the housing 134, and water vapor as a reaction medium enters and exits the housing 134 from the opening and can react with the gypsum powder.

  The heat exchanger provided in the reactor 100 has, for example, the above-described configuration, and heat is exchanged with the heat medium flowing through the flow path when the filled reaction material generates and absorbs heat and reacts with the reaction medium. I do.

<Reaction material>
Next, the reaction material used in this embodiment will be described. The heat exchanger according to the present embodiment is filled with gypsum powder as described above. In the following, examples of gypsum powder will be described.

<Example>
As will be described below, the gypsum powders of Examples 1 to 5 and Comparative Examples 1 to 5 having different particle sizes were prepared, and the ratio of the type III anhydrous gypsum changed to the type II anhydrous gypsum after the heat dissipation / heat storage test was measured. .

Example 1
1000 parts by mass of cyclohexanone was added to 1000 parts by mass of type III hemihydrate gypsum (Yoshino gypsum: cherry seal gypsum class A) having a particle size of 10 μm to 30 μm and stirred for about 10 minutes to form a slurry. Next, the above-described type III hemihydrate gypsum slurry was pulverized for 10 minutes in a wet bead mill using ZrO ₂ beads having a diameter of 2 mm, and the gypsum powder of Example 1 was obtained. When the average particle size was measured with a concentrated particle size analyzer FPAR-1000 (manufactured by Otsuka Electronics Co., Ltd.), the average particle size of the gypsum powder of Example 1 was 1 μm.

(Example 2)
A slurry of III hemihydrate gypsum produced in the same manner as in Example 1 was pulverized for 30 minutes by a wet bead mill using ZrO ₂ beads having a diameter of 2 mm, to obtain gypsum powder of Example 2. When the average particle size was measured in the same manner as in Example 1, the average particle size of the gypsum powder of Example 2 was 0.43 μm.

Example 3
A slurry of III hemihydrate gypsum produced in the same manner as in Example 1 was pulverized for 2 hours in a wet bead mill using ZrO ₂ beads having a diameter of 2 mm to obtain gypsum powder of Example 3. When the average particle size was measured in the same manner as in Example 1, the average particle size of the gypsum powder of Example 3 was 0.37 μm.

Example 4
A slurry of III hemihydrate gypsum produced in the same manner as in Example 1 was pulverized for 6 hours in a wet bead mill using ZrO ₂ beads having a diameter of 2 mm, to obtain gypsum powder of Example 4. When the average particle size was measured in the same manner as in Example 1, the average particle size of the gypsum powder of Example 4 was 0.3 μm.

(Example 5)
The slurry of III hemihydrate gypsum prepared in the same manner as in Example 1 was pulverized for 6 hours with a wet bead mill using ZrO ₂ beads with a diameter of 2 mm, and further pulverized with ZrO ₂ beads with a diameter of 0.5 mm for 6 hours. The gypsum powder of Example 5 was obtained. When the average particle size was measured in the same manner as in Example 1, the average particle size of the gypsum powder of Example 5 was 0.25 μm.

(Comparative Example 1)
To 1000 parts by weight of type III hemihydrate gypsum (Yoshino gypsum: cherry seal gypsum class A) having a particle size of 10 μm to 30 μm, knead for about 1 minute by adding 740 parts by weight of water, and pour into the mold for about 30 minutes. Allowed to cure. The cured gypsum block was removed from the mold, left in a room temperature environment for 1 to 7 days, and then dried at 150 ° C. for 5 hours to obtain a type III anhydrous gypsum. A block type III anhydrous gypsum coarsely pulverized with a solid pulverizer VM-16 (manufactured by Orient Crusher Co., Ltd.) was classified with a sieve, and the gypsum powder of Comparative Example 1 having a particle size range of 1000 μm to 1400 μm was classified. Obtained.

(Comparative Example 2)
Classification was performed using a sieve having a different opening from that of Comparative Example 1 to obtain a gypsum powder of Comparative Example 2 having a particle size range of 355 μm to 500 μm.

(Comparative Example 3)
Classification was performed using a sieve having a different opening from those of Comparative Examples 1 and 2 to obtain a gypsum powder of Comparative Example 3 having a particle size range of 250 μm to 355 μm.

(Comparative Example 4)
Classification was performed using a sieve having a different opening from those of Comparative Examples 1 to 3, and the gypsum powder of Comparative Example 4 having a particle size range of 45 μm to 75 μm was obtained.

(Comparative Example 5)
A type III hemihydrate gypsum (manufactured by Yoshino Gypsum: Sakura Seal Gypsum Class A) having a particle size of 10 μm to 30 μm was used as the gypsum powder of Comparative Example 5.

[Heat dissipation and heat storage test]
A copper dish is welded to the flow path of the heat medium provided in the reactor 100 of the chemical heat pump 10 shown in FIG. 1, and the gypsum powder of Examples 1 to 5 is placed on the copper dish to perform the following heat dissipation operation. And the heat storage operation was repeated alternately.

  In the heat dissipation operation, water vapor was supplied from the evaporator 300 to the reactor 100 to cause an exothermic reaction in the gypsum powder on the copper dish and dissipate heat to the heat medium. In the heat storage operation, a high-temperature heat medium was introduced into the flow path where the copper dish was welded, and an endothermic reaction was caused in the gypsum powder on the copper dish to store the heat of the heat medium.

  Using the gypsum powder of Examples 1 to 5, the heat radiation operation and the heat storage operation were alternately performed 390 times for 10 minutes. After the above heat dissipation / heat storage test, the ratio of type II anhydrous gypsum in the gypsum powder on the copper dish was measured using an X-ray diffractometer (manufactured by PANalytical Co., Ltd .: X'PertPRO). The measurement results are shown in Table 1.

表１には、以下に示す比較例１〜５の試験結果と比較するために、３９０回の放熱・蓄熱試験結果におけるII型無水石膏割合を、放熱・蓄熱の回数を６０回に換算（３９０回放熱・蓄熱試験のII型無水石膏割合×６０／３９０）した値も併せて示した。

In Table 1, in order to compare with the test results of Comparative Examples 1 to 5 shown below, the ratio of type II anhydrous gypsum in the heat dissipation / heat storage test results of 390 times is converted to 60 times of the heat dissipation / heat storage frequency (390 The value of the type II anhydrous gypsum ratio of the heat release and heat storage test × 60/390) is also shown.

  Moreover, the heat dissipation / thermal storage test similar to Examples 1-5 was done using the gypsum powder of Comparative Examples 1-5. The heat radiation operation and the heat storage operation were performed 60 times alternately for 10 minutes each. Table 2 shows the results of measuring the proportion of type II anhydrous gypsum after the heat dissipation / heat storage test of the gypsum powder of Comparative Examples 1 to 5 in the same manner as in Examples 1 to 5.

表１及び表２に示されるように、石膏粉末の粒径が小さいほど、放熱・蓄熱試験においてIII型無水石膏がII型無水石膏に変化する割合が減少していることが分かる。

As shown in Tables 1 and 2, it can be seen that the smaller the particle size of the gypsum powder, the lower the rate of change of type III anhydrous gypsum to type II anhydrous gypsum in the heat dissipation / heat storage test.

  In the gypsum powder of Comparative Examples 1 to 5, the ratio of type II anhydrous gypsum after 60 heat dissipation / storage tests is about 65% or more. Repeated heat dissipation and heat storage using such a gypsum powder as a reaction material will change type III anhydrous gypsum to type II anhydrous gypsum, reducing the reaction rate, and sufficient heat exchange with the heat medium Can be difficult.

  On the other hand, in the gypsum powder of Examples 1 to 5 having a particle size of 1 μm or less, the ratio of type II anhydrous gypsum after heat dissipation / heat storage test converted to 60 times is 11.5% or less, and from type III anhydrous gypsum Change to type II anhydrous gypsum has decreased. Moreover, in the gypsum powder of Examples 2 to 5 having a particle size of 0.5 μm or less, the ratio of type II anhydrous gypsum after 390 heat dissipation / storage tests was 35% or less, and the change to type II anhydrous gypsum was more. Reduced.

  Therefore, by using gypsum powder with a small particle size as the reaction material, even if the heat dissipation operation and the heat storage operation are repeatedly performed, the decrease in the reaction rate is suppressed, and heat exchange with the heat medium can be performed repeatedly. become.

  FIG. 7 is a graph showing the ratio of type II anhydrous gypsum after 60 heat radiation and heat storage tests in the gypsum powders of Examples 1 to 5 and Comparative Examples 1 to 5. In addition, about Examples 1-5, the value which converted the type II anhydrous gypsum ratio after 390 times of heat dissipation / thermal storage tests into the type II anhydrous ratio after 60 times of heat dissipation / thermal storage tests is shown.

  The solid line in the graph shown in FIG. 7 is a curve when the coefficient β in the following formula (2) is 0.1.

Ｐ：II型無水石膏割合［％］
φ：石膏粉末の粒径［μm］
図７のグラフに示されるように、石膏粉末の粒径が小さいほど、放熱動作及び蓄熱動作を繰り返し実行したときのIII型無水石膏からII型無水石膏への変化が低減することが分かる。

P: Type II anhydrous gypsum ratio [%]
φ: Gypsum powder particle size [μm]
As shown in the graph of FIG. 7, it can be seen that the smaller the particle size of the gypsum powder, the smaller the change from type III anhydrous gypsum to type II anhydrous gypsum when the heat radiation operation and the heat storage operation are repeatedly performed.

  For example, by using a gypsum powder having an average particle size of 1 μm or less as a reaction material, the ratio of type II anhydrous gypsum after 60 heat radiations and heat storages can be suppressed to about 10%. Further, by using a gypsum powder having an average particle size of 0.5 μm or less as a reaction material, the ratio of type II anhydrous gypsum after 60 heat radiations and heat storages can be suppressed to about 5%.

  By using such a small particle size gypsum powder as the reaction material of the heat exchanger, it becomes possible to maintain the reaction rate of the reaction material even if the heat radiation operation and the heat storage operation are repeated, and heat exchange with the heat medium Can be repeated.

  As described above, according to the reaction material according to the present embodiment, the change from type III anhydrous gypsum to type II anhydrous gypsum is reduced, and the decrease in the reaction rate when heat storage and heat release are repeatedly performed is suppressed. The Therefore, by using such a reaction material for the heat exchanger, it becomes possible to repeatedly perform heat exchange between the heat medium and the heat exchanger. Moreover, according to the chemical heat pump having such a heat exchanger, the heat storage and heat dissipation performance is maintained for a long time.

  As mentioned above, although the reaction material, heat exchanger, and chemical heat pump which concern on embodiment were demonstrated, this invention is not limited to the said embodiment, A various deformation | transformation and improvement are possible within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Chemical heat pump 100 Reactor 110,130 Heat exchanger 115 Plate fin 116 Corrugated fin 117 Coating material 120 Laminated body 131 Heat medium pipe 133 Fin 134 Housing 200 Condenser (Reaction medium recovery machine)
300 Evaporator (reaction medium feeder)

Japanese Patent No. 5302706 Japanese Patent No. 3453937

Claims (6)

A reaction material for a heat exchanger, wherein the reaction material is a gypsum powder having a particle size of 1 μm or less. The reaction material according to claim 1, wherein the gypsum powder has a particle size of 0.5 μm or less. A heat exchanger comprising the reaction material according to claim 1. It has a laminate in which plate fins and corrugated fins having flow paths through which a heat medium flows are alternately laminated,
The heat exchanger according to claim 3, wherein the reaction material is filled in a gap between the plate fin and the corrugated fin. A heat medium pipe through which the heat medium flows in a pipe provided with a plurality of fins around it, and
A housing surrounding the plurality of fins,
The heat exchanger according to claim 3, wherein the reaction material is filled in the housing. A reactor comprising the heat exchanger according to claim 4 or 5, and
A reaction medium feeder for supplying a reaction medium that reversibly reacts with the reaction material to the reactor;
A chemical heat pump, comprising: a reaction medium recovery unit that recovers the reaction medium from the reactor.

Images