JP2002031426A - Heat storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that connectional efficiency is low in heat storage device. SOLUTION: A heat transfer body 4 is arranged in the adsorbing material 1 of an adsorbent vessel 5 at least in the circumference of a coil-type heat exchanger 3, whereby adsorption heat, generated by the adsorbent 1, can be transferred efficiently to the coil type heat exchanger 3 and the heat storage device having a high efficiency is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage device using an adsorbent which can perform cooling, heating and hot water supply.

[0002]

2. Description of the Related Art A conventional heat storage device of this type has a configuration as shown in FIG. That is, an adsorbent container 45 accommodating the adsorbent 41, a water storage container 48 for exchanging water between the adsorbent container 45, and a closed system connecting the adsorbent container 45 and the water storage container 48. And a valve 50 provided in the middle of the pipe 49.

[0003] In an adsorbent container 45, an adsorbent 41 and a heat exchanger 43 are provided. The adsorbent 41 generates heat of adsorption when adsorbing water used as a working medium, and zeolite is typically used. The heat exchanger 43 exchanges the heat of adsorption with the outside to heat the outside, or heats the water and supplies it to the outside as warm water.

Hereinafter, the operation of the heat storage device will be described. When the valve 50 is opened, the water stored in the water storage container 48 becomes steam and moves to the adsorbent container 45 side through the pipe 49. That is, since the inside of the system is kept in a vacuum,
When the valve 50 is opened, a difference in vapor pressure occurs between the adsorbent container 45 and the water storage container 48. Due to this difference in vapor pressure, the water stored in the water storage container 48 is vaporized and becomes steam, and moves to the adsorbent container 45 side through the pipe 49. At this time, the adsorbent 41 accommodated in the adsorbent container 45 adsorbs this water vapor. Therefore, the adsorbent 41 generates heat of adsorption and generates heat. At this time, if water is circulated in the copper or aluminum pipe used as the heat exchanger 43, for example, the heat of adsorption is exchanged with the circulating water, and the water becomes hot water. is there. Therefore, the space in which the heat exchanger 43 is provided is heated by dissipating the heat energy of the hot water. Alternatively, if the configuration is such that the hot water is taken out to the outside, it can be used as a water heater.

At this time, the adsorbent 41 in the adsorbent container 41 is
Is for continuously adsorbing the water vapor supplied from the water storage container 48 as described above. As a result, the water in the water storage container 48 is continuously vaporized. Therefore, the water storage container 48 keeps supplying a heat amount corresponding to 539 cal / g of heat of vaporization required when the water is vaporized to the water 46 as the working medium. If, for example, water is circulated in the heat exchanger 47 provided in the water storage container 48, the water is cooled by heat exchange with the heat of vaporization. Therefore, the space where the heat exchanger 47 is arranged is cooled.

When the adsorbent 41 has reached a saturated state, the adsorption of water vapor is terminated at this point. In this state, the difference in vapor pressure between the adsorbent container 45 and the water storage container 48 disappears, and the adsorbent 41 stops generating heat.

Therefore, in order to use this device again as a cooling / heating device, it is necessary to remove the water vapor adsorbed by the adsorbent 41. That is, the heat medium is circulated through the heat exchanger 43, and the heat energy of the heat medium is transmitted to the adsorbent 41 by heat exchange, or the heater 42 is energized to heat the adsorbent 41. There is a method.
At this time, since the system is maintained in a vacuum, even if the heating energy is small, the water adsorbed by the adsorbent 41 is easily desorbed and becomes water vapor. This water vapor is supplied to the pipe 4
9. From the adsorbent container 41 through the valve 50 to the water storage container 4
Go to 8. At this time, the heat exchanger 47 in the water storage container 48
If the water is circulated, the temperature of the water rises due to the heat of condensation released when the water is turned into water. Therefore, at this time, the space where the heat exchanger 47 is disposed is heated. Thus, the water that has released the condensation heat is stored in the water storage container 48.

[0008]

However, the conventional heat storage device has a problem that its efficiency is low. That is, since the heat conductivity of the adsorbent is low, it is difficult to efficiently transmit the heat of adsorption generated by the adsorbent to the heat exchanger.

[0009]

According to the present invention, the adsorbent container has a heat conductor disposed around the heat exchanger so that the heat of adsorption generated by the adsorbent can be efficiently transmitted to the heat exchanger. The heat storage device is highly efficient.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, the adsorbent container is provided with a heat conductor around the heat exchanger so that the heat of adsorption generated by the adsorbent is efficiently transferred to the heat exchanger. It is a heat storage device that can transmit and has high efficiency.

According to a second aspect of the present invention, the heat conductors are arranged in layers so as to sandwich the adsorbent.
The heat of adsorption generated by the adsorbent can be efficiently transmitted to the heat exchanger, and the heat storage device has high efficiency.

According to a third aspect of the present invention, the heat conductor is made of a porous material, so that the packing density of the adsorbent can be increased, and the surface area of the adsorbent can be increased. It is a highly efficient heat storage device that can be transmitted to the exchanger.

According to a fourth aspect of the present invention, the heat conductor is a woven fabric of metal fibers, the packing density of the adsorbent can be increased, and the surface area of the adsorbent can be increased, so that the heat of adsorption generated by the adsorbent can be efficiently reduced. A highly efficient heat storage device that can be transmitted to the heat exchanger.

According to a fifth aspect of the present invention, since the coiled heat exchanger disposed in the water storage container has a water retaining material around the water retaining material, the water retaining material can absorb water and increase the surface area of the water.
The water evaporates efficiently and the reaction can proceed efficiently,
The heat storage device is highly efficient.

The invention described in claim 6 is a highly efficient heat storage device in which the water retention material is made of a porous body and the surface area of the water is increased, so that the water can be efficiently evaporated and the reaction can proceed efficiently, and the reaction can be efficiently performed.

According to a seventh aspect of the present invention, the water retention material is a fiber woven fabric, and the surface area of the water is increased, so that the water can evaporate efficiently and the reaction can proceed efficiently, thereby providing a highly efficient heat storage device.

The invention described in claim 8 is a heat storage device in which the water retention material includes a heat conductor, heat transfer to water is performed more efficiently, and the efficiency is high.

According to the ninth aspect of the present invention, heat transfer to water is performed more efficiently by using the heat conductor as metal fibers,
The heat storage device is highly efficient.

According to a tenth aspect of the present invention, an anhydrous salt of a hydrated salt type latent heat storage material is used as an adsorbent, the heat storage density is very large, and the temperature required for desorbing the adsorbed moisture is also compared. It is a low-temperature, compact or energy-saving device.

According to the present invention, the anhydrous salt of the hydrated salt type latent heat storage material is calcium chloride, sodium sulfate, lithium bromide or lithium chloride, and has a very large heat storage density and desorbs adsorbed moisture. The temperature required for this is relatively low, making the device compact or energy-saving and easy to handle.

[0021]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is an explanatory diagram illustrating the configuration of the heat storage device of the present embodiment. The heat storage device of the present embodiment includes an adsorbent container 5
Between the storage container 8 and the adsorbent container 5 and the storage container 8,
It is constituted by a pipe 9 connected as a closed system via a valve 10.

In this embodiment, the adsorbent container 5 is made of rust-proof metal, but there is no material limitation as long as appropriate strength and corrosion are considered. In addition, the adsorbent container 5
If the outside is covered with a heat insulating material such as glass wool to prevent the internal heat from leaking out easily, a more preferable structure is obtained. The adsorbent container 5 includes an adsorbent 1 using zeolite or silica gel or an anhydrous salt of a hydrated latent heat storage material such as calcium chloride, sodium sulfate, lithium bromide, and lithium chloride, and an electric heater. A heat exchanger 2 is provided, and a coiled heat exchanger 3 made of a metal pipe such as aluminum or copper, which allows water to flow from the outside.

The adsorbent 1 may be any substance other than those described above, as long as it generates an exothermic reaction when water is added and the reaction is reversible. In particular, the anhydrous salt of the hydrated-type latent heat storage material has a very high heat storage density, requires a relatively low temperature for desorbing adsorbed moisture, and has a small environmental load. Very suitable for. If it is a solid, the surface area increases if it is made into a powder, and the reaction occurs efficiently. Therefore, in this embodiment, calcium chloride anhydrate in powder form is used.

Although the heater 2 uses an electric heater in this embodiment, a gas heater or an electromagnetic induction heating device may be used. The installation location may be outside or inside the adsorbent container 5. In this embodiment, an electric heater is used as the heater 2 and is installed outside the absorbent container 5.

The storage container 8 exchanges water, which is a working medium, with the adsorbent container 5, and in this embodiment, rust-proof metal is used. However, as in the case of the adsorbent container 5, there is no material limitation as long as appropriate strength and corrosion are considered. Further, if the outside of the storage container 8 is covered with a heat insulating material such as glass wool to prevent the internal heat from leaking to the outside, a more preferable structure is obtained. The storage container 8 contains water 6 serving as a working medium inside.
And a coiled tube heat exchanger 7 that allows water to flow inside. The coiled heat exchanger 3 and the coiled heat exchanger 7 use metal pipes having high heat conductivity, such as copper or aluminum. However, there is no material limitation as long as appropriate thermal conductivity, strength and corrosion are considered. In addition, the use of a flexible tube having a large surface area, such as a flexible tube, or the attachment of fins improves the heat exchange efficiency.

In this embodiment, a heat conductor 4 is disposed around the coiled heat exchanger 3. The thermal conductor 4 is not particularly limited as long as it has a high thermal conductivity. In particular, a porous metal such as steel wool or nickel foam, a stainless steel fiber, an aluminum fiber, or the like can be used. Metal fibers are suitable as the heat conductor 4. That is, a metal porous body or a metal fiber such as a stainless fiber or an aluminum fiber can be impregnated with the adsorbent 1, and as a result,
The packing density of the adsorbent 1 can be increased.
Therefore, the surface area on which the adsorbent 1 is distributed can be increased,
In addition, a passage for water vapor can be secured. As a result, the adsorbent 1 can uniformly generate heat in the adsorbent container 5. Therefore, the heat generated by the adsorbent 1 is efficiently transmitted to the coiled heat exchanger 3.

At this time, the arrangement of the heat conductor 4 may be a shape as shown in FIG. FIG. 2 is an explanatory diagram showing an arrangement of the heat conductor 4 of the present embodiment. In the present embodiment, the heat conductor 4 is arranged such that the adsorbent 1
And the heat conductor 4 are alternately stacked in layers. For this reason, the heat generated by the adsorbent 1 is transmitted to the coil heat exchanger 3 very efficiently.

In this embodiment, the adsorbents 1 and the heat conductors 4 are alternately stacked in the vertical direction as shown in FIG. 2, but for example, as shown in FIG.
There is no problem even if it is arranged alternately in the horizontal direction.

In this embodiment, steel wool is used as the heat conductor 4. This steel wool is wound around a metal pipe such as aluminum, and this metal pipe is bent to form the coiled heat exchanger 3. It is also good.

The adsorbent container 5 and the storage container 8 are connected by a metal pipe 9 so as to maintain a closed system. The pipe 9 is provided with an openable / closable valve 10. In addition, it is also possible to install a vacuum degree detecting means and a temperature detecting means in the piping 9.

Hereinafter, the operation of this embodiment will be described.
The heat storage device of the present embodiment operates as a device that can efficiently perform cooling, heating, or hot water supply.

First, the adsorption process, that is, the process in which the adsorbent 1 adsorbs water will be described. When the valve 10 is opened, the adsorbent 1 starts adsorption. That is, the valve 10
A difference in vapor pressure occurs between the normal temperature water storage container 8 and the adsorbent container 5 in which the heat storage is completed in the closed state. That is, the vapor pressure of the storage container 8 is higher than the vapor pressure of the adsorbent container 5. For this reason, the water 6 in the storage container 8 evaporates into steam, flows through the pipe 9 and flows into the adsorbent container 5. This water vapor is adsorbed by the adsorbent 1.

At this time, in the storage container 8, since the water 6 is vaporized, the heat of vaporization is deprived, so that the temperature of the water 6 in the liquid phase portion decreases. In the adsorbent container 5, the adsorbent 1 generates heat of adsorption by adsorbing water in the form of water vapor. At this time, in the present embodiment, water is externally passed through the coiled heat exchanger 7 in the storage container 8. That is, the storage container 8
The heat of vaporization of the water is guaranteed by this external water flow. In other words, the coiled tube heat exchanger 7 exchanges the heat of vaporization with external water flow. At the same time, the coiled heat exchanger 3 placed in the adsorbent container 5
Water flows from inside to outside. Therefore, the heat of adsorption generated by the adsorbent 1 is exchanged by the coiled heat exchanger 3 with the water flowing inside.

For this reason, the temperature of the adsorbent 1 is maintained at a normal temperature, and the adsorption process is continued. At this time, in this embodiment, the heat conductor 4 is arranged in the adsorbent container 5.
For this reason, the heat of adsorption of the adsorbent 1 is efficiently transmitted to the coiled heat exchanger 3 through the heat conductor 4. Therefore, in the coiled tube heat exchanger 3, the heat of adsorption can be exchanged with the water flowing inside very efficiently. In particular, if the porous material or the fabric of the fiber is impregnated with the adsorbent 1, the packing density of the adsorbent 1 can be increased, the surface area of the adsorbent 1 can be increased, and a passage for water vapor can be secured. Therefore, the generation of heat of adsorption due to the adsorption of water vapor by the adsorbent 1 is performed very efficiently. Further, heat generated by the reaction can also be efficiently exchanged.

Thus, in the adsorption step, cooling, heating or hot water supply can be performed by the coiled heat exchanger 3 in the water storage container 8 and the coiled heat exchanger 7 in the heat storage material container 5, respectively.

Next, a desorption process for regenerating the adsorbent 1 will be described. With the valve 10 open, the heater 2
Is applied to heat the adsorbent 1, the water adsorbed by the adsorbent 1 is desorbed. The desorbed water becomes steam and moves through the pipe 9 to enter the upper portion of the storage container 8. At this time, since the entire system is in a vacuum state, the desorbed water can be easily vaporized at a low temperature. At this time, as described above, the storage vessel 8 is provided with the coiled heat exchanger 7 in which water is circulated. Therefore, the heat energy of the steam is supplied to the water flowing through the coiled heat exchanger 7. For this reason, the water vapor in the storage container 8 radiates heat of condensation to become water, and is stored as a liquid phase at the bottom of the storage container 8. Then, with water completely separated from the adsorbent 1, the valve 10 is closed to complete the heat storage.

(Experimental Example 1) The result of an experiment for verifying the effect of the present embodiment will be described below.

The experimental apparatus used in this experiment is as follows.
Kind. Reference numeral 1 denotes an adsorbent container 5 that contains 150 g of anhydrous calcium chloride as an adsorbent, and a storage container 8 that contains 150 g of water. 2 is an adsorbent container 5 in which 30 g of steel wool is arranged around a coiled heat exchanger 3 and 150 g of anhydrous calcium chloride used as an adsorbent is impregnated in the steel wool; Is used as the storage container 8 containing 150 g. 3 is 15g steel wool and 150g
g of calcium chloride anhydrous salt in a layered form, and a storage container 8 containing 150 g of water are used.

The state of heat generation in the adsorbent container 5 is measured using the three types of experimental devices. That is, the valve 10 closed before the experiment is opened, and the water evaporated from the storage container 8 is adsorbed on the adsorbent 1 in the adsorbent container 5. At this time, at the same time as the valve 10 is opened, water is allowed to flow from the outside to the coiled heat exchanger 3 in the adsorbent container 5 and the coiled heat exchanger 7 in the storage container 8. In this state, the respective inlet and outlet temperatures are measured. From the difference between the inlet temperature and the outlet temperature of the coiled tube heat exchanger 3, the amount of heat exchanged by the coiled tube heat exchanger 3 and flowing to the outside is calculated. The experiment is terminated when the difference between the inlet temperature and the outlet temperature disappears.

After the experiment, the mass of the anhydrous calcium chloride salt used as the adsorbent 1 was measured. Naturally, the anhydrous salt of calcium chloride is calcium chloride in which water is adsorbed by the adsorbed water vapor. Therefore, the increase in mass is the amount of adsorbed water. The calorific value is calculated from the increased amount of water. In this experiment, the ratio of this calorific value to the amount of heat exchanged by the coiled heat exchanger 3 and flowing out is shown as a heat exchange rate.

The results of this experiment are shown in (Table 1).

[0042]

[Table 1]

As can be understood from Table 1, the packing density of steel wool impregnated with anhydrous calcium chloride is lower than that of calcium chloride alone, but the reaction is stopped due to the passage of steam. Proceed without doing
The calorific value increases. Further, the heat generated by the calcium chloride can be transmitted to the coiled-tube heat exchanger A11 through the steel wool, which is a heat conductor, so that the heat exchange rate can be increased.

When calcium chloride and steel wool are stacked in layers, the packing density of calcium chloride can be further increased.

(Experimental Example 2) Subsequently, the adsorbent 1 in the desorption process
We are conducting an experiment to confirm the state of regeneration. In the present experiment, the experimental apparatus 1 contains 247 g of calcium chloride tetrahydrate as the adsorbent 1 in the adsorbent container 5.
Further, 30 g of steel wool was placed around the coiled heat exchanger 3 of the adsorbent container 5, and the steel wool impregnated with 247 g of calcium chloride tetrahydrate was used in the experimental apparatus 2.
And In addition, the experimental apparatus 3 uses a container in which the adsorbent container 5 is filled with 15 g of steel wool and 247 g of calcium chloride tetrahydrate in a layered manner. An electric heater is provided outside each adsorbent container 5.

After the valve 10 is opened using the above experimental apparatus, the adsorbent container 5 is heated for 2 hours by the electric heater so that the external surface temperature of the adsorbent container 5 becomes 150 ° C. Thereafter, energization of the electric heater is stopped, and the valve 10 is closed. After the adsorbent container 5 was sufficiently cooled in this way, the mass of calcium chloride in the adsorbent container 5 was measured. The regeneration rate was calculated from the mass of each calcium chloride, with the regeneration rate when calcium chloride anhydrous salt was taken as 100%. The results of this experiment are shown in (Table 2).

[0047]

[Table 2]

As can be seen from Table 2, steel wool impregnated with calcium chloride tetrahydrate is:
Heat from the heater is efficiently transmitted to the whole through the steel wool, the reaction proceeds without stopping, and water can be efficiently desorbed.

The same effect can be obtained by stacking calcium chloride and steel wool in layers.

As described above, according to this embodiment, the adsorbent 1
, A storage container 8 for storing a working medium to be adsorbed on the adsorbent 1, and a heat exchanger 7 for conducting heat energy generated in the adsorbent container 5 to the outside.
And a pipe 9 for connecting the adsorbent container 5 and the storage container 8 as a closed system, wherein heat that conducts heat from the adsorbent 1 to the heat exchanger 7 is provided in the adsorbent container 5. As a heat storage device in which the conductor 4 is arranged, a chemical heat storage device capable of efficiently performing heating, cooling, and hot water supply can be realized.

(Embodiment 2) Next, a second embodiment of the present invention will be described. FIG. 3 is an explanatory diagram illustrating the configuration of the present embodiment. In the present embodiment, a water retention material 11 is arranged around the coiled heat exchanger 7 in the storage container 8. Water retention material 11
Is not particularly limited as long as it can absorb water, such as cloth and silk. Use of fibrous materials such as cloth fibers, silk fibers, and nylon fibers is more preferable because the water retention efficiency increases and the surface area of water increases. Also,
When metal fibers such as stainless steel, aluminum, steel, and nickel are used, the heat conductivity increases, so that the heat exchange efficiency in the coiled tube heat exchanger 7 increases. Furthermore, weaving a fabric fiber and a metal fiber is optimal because the water retention efficiency and the heat exchange rate can be increased simultaneously.

Hereinafter, the operation of this embodiment will be described.
An adsorption process, that is, a process in which the adsorbent 1 adsorbs water will be described. Adsorption is started by opening valve 10. When the valve 10 is opened, the water 6 in the storage container 8 starts vaporizing as described in the first embodiment. At this time, in this embodiment, since the water 6 is absorbed by the water retaining material 11, the surface area is very large. Therefore, water 6
Vaporization proceeds very efficiently. The water 6 that has been vaporized into steam flows into the adsorbent container 5 via the pipe 9, where it is adsorbed by the adsorbent 1. As the water in the storage container 8 evaporates, the temperature of the liquid phase water 6 in the storage container 8 decreases, and the adsorbent 1 adsorbs the water in the adsorbent container 5 so that the adsorbent 1 Temperature rises. Thus,
The pressure difference between the adsorbent container 5 and the storage container 8 is eliminated, and the adsorption process is stopped in this state. In order to continue this adsorption process, water is passed from the outside to the coiled heat exchanger 7 in the storage container 8 as in the configuration of the first embodiment. At the same time, water is also passed from outside to the coiled heat exchanger 3 in the adsorbent container 5.

For this reason, as described in the first embodiment, the adsorption process can be continued, heating can be performed in the area where the coiled heat exchanger 3 is disposed, and the coiled heat exchanger 7 is disposed. The area can be cooled. When the water circulated through the coiled heat exchanger 3 is taken out, hot water can be supplied.

At this time, if the water retaining material 11 is arranged around the coiled heat exchanger 7 in the storage container 8, the heat of vaporization when the water 6 evaporates is directly transferred to the coiled heat exchanger 7. Since the heat is transmitted, the heat exchange efficiency is greatly improved. Therefore, heat exchange is performed very efficiently, and the reaction does not stop. In particular, if the water retention material contains a heat conductor, the heat exchange efficiency is further improved.

(Experimental Example 3) The result of an experiment performed to verify the effect of the present embodiment will be described below. The following three types of devices were used in this experiment.

First, 30 g of steel wool is arranged around the coiled heat exchanger 3, and the steel wool is impregnated with 150 g of calcium chloride anhydrous salt.
And a storage container 8 containing 150 g of water. Second, 30 g of steel wool is arranged around the coiled heat exchanger 3, and an adsorbent container 5 in which the steel wool is impregnated with 150 g of calcium chloride anhydrous salt, and a cloth is placed on the surface of the coiled heat exchanger 7. 8 g of fibers are arranged, and a storage container 8 containing 150 g of water is used. Third, 30 g of steel wool is arranged around the coiled heat exchanger 3, and the adsorbent container 5 in which the steel wool is impregnated with 150 g of calcium chloride anhydrous salt, and the surface of the coiled heat exchanger 7, 15 g of cloth fibers woven with aluminum fibers are arranged, and the storage container 8 absorbing 150 g of water is used.

For each of the above experimental devices, the valve 10 closed before the experiment was opened, and the coiled heat exchanger 3 in the adsorbent container 5 and the coiled heat exchanger 7 in the storage container 8 were opened.
Water from outside. At this time, the inlet temperature and the outlet temperature are measured, and the amount of heat exchanged by the coiled heat exchanger 7 is calculated from the difference between the inlet temperature and the outlet temperature of the coiled heat exchanger 7. I have. The experiment is terminated when the difference between the inlet temperature and the outlet temperature disappears.
After the experiment, the mass of water in the storage container 8 was measured,
The calorific value of vaporization is calculated from the reduced amount of water. The ratio of the amount of heat of vaporization to the amount of heat exchanged by the coiled heat exchanger 7 and taken in from the outside is shown as a heat exchange rate. The results of this experiment are shown in (Table 3).

[0058]

[Table 3]

As clearly shown in Table 3, by arranging the water retention material 11 around the coiled heat exchanger 7, the heat exchange rate can be greatly improved.

As described above, according to the present embodiment, the coiled tube heat exchanger 7 disposed in the storage vessel 8 has the water retaining material 11 around it so that heating, cooling, and hot water supply can be efficiently performed. A heat storage device can be realized.

[0061]

According to the first aspect of the present invention, an adsorbent container for accommodating an adsorbent, a storage container for storing a working medium to be adsorbed by the adsorbent, and heat energy generated in the adsorbent container are externally supplied. A heat exchanger that conducts heat to the heat exchanger, and a pipe that connects the adsorbent container and the storage container as a closed system, and conducts heat from the adsorbent to the heat exchanger in the adsorbent container. As a configuration in which a heat conductor is arranged, heat of adsorption generated by an adsorbent can be efficiently transmitted to a heat exchanger, and a highly efficient heat storage device is realized.

According to a second aspect of the present invention, the heat conductor comprises:
With the arrangement in which the adsorbents are stacked in layers so as to sandwich the adsorbents, the heat of adsorption generated by the adsorbents can be efficiently transmitted to the heat exchanger, and a highly efficient heat storage device is realized.

According to a third aspect of the present invention, the heat conductor is made of a porous material, and the heat of adsorption generated by the adsorbent can be efficiently transmitted to the heat exchanger, thereby realizing a highly efficient heat storage device. It is.

According to a fourth aspect of the present invention, the heat conductor comprises:
As a configuration made of a metal fiber fabric, the heat of adsorption generated by the adsorbent can be efficiently transmitted to the heat exchanger, thereby realizing a highly efficient heat storage device.

According to a fifth aspect of the present invention, the coiled heat exchanger disposed in the storage container has a structure in which a water retention material is provided around the heat exchanger, so that water can efficiently evaporate and the reaction can proceed efficiently. This realizes a high heat storage device.

According to the sixth aspect of the present invention, since the water retention material is formed of a porous body, the surface area of the water increases, so that the water can evaporate efficiently and the reaction can proceed efficiently, and the highly efficient heat storage It implements the device.

According to a seventh aspect of the present invention, as the water retention material is formed of a woven fabric, the water can be efficiently evaporated and the reaction can proceed efficiently, thereby realizing a highly efficient heat storage device. .

According to the eighth aspect of the present invention, since the water retaining material includes a heat conductor, heat transfer to water is performed more efficiently, and a highly efficient heat storage device is realized.

According to a ninth aspect of the present invention, the thermal conductor comprises:
As a configuration using metal fibers, heat transfer to water is performed more efficiently, and a highly efficient heat storage device is realized.

According to a tenth aspect of the present invention, an anhydrous salt of a hydrated type latent heat storage material is used as the adsorbent.
The heat storage density is very large, the temperature required for desorbing the adsorbed moisture is relatively low, and a compact or energy-saving device is realized.

According to the eleventh aspect of the present invention, the anhydrous salt of the hydrated salt type latent heat storage material is selected from calcium chloride, sodium sulfate, lithium bromide or lithium chloride, and has a very large heat storage density and is adsorbed. The temperature required for desorbing moisture is relatively low, and a compact or energy-saving device that is easy to handle is realized.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a heat storage device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing another embodiment.

FIG. 3 is an explanatory diagram showing a configuration of a heat storage device according to a second embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a configuration of a conventional heat storage device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adsorbent 2 Heater 3 Serpentine heat exchanger 4 Heat conductor 5 Adsorbent container 6 Water 7 Serpentine heat exchanger 8 Storage container 9 Piping 10 Valve 11 Water retention material

Claims (11)

[Claims] 1. An adsorbent container for storing an adsorbent, a storage container for storing a working medium to be adsorbed on the adsorbent, a heat exchanger for conducting heat energy generated in the adsorbent container to the outside, A heat storage device, comprising: a pipe connecting the adsorbent container and the storage container as a closed system; and a heat conductor that conducts heat from the adsorbent in the heat exchanger in the adsorbent container. 2. The heat storage device according to claim 1, wherein the heat conductors are arranged in layers so as to sandwich the adsorbent. 3. The heat storage device according to claim 1, wherein the heat conductor is a porous body. 4. The heat storage device according to claim 1, wherein the heat conductor is a metal fiber fabric. 5. The heat storage device according to claim 1, wherein the coiled-tube heat exchanger disposed in the storage container has a water retaining material around the heat exchanger. 6. The heat storage device according to claim 5, wherein the water retention material is a porous body. 7. The heat storage device according to claim 5, wherein the water retention material is a woven fabric of fibers. 8. The heat storage device according to claim 5, wherein the water retention material includes a heat conductor. 9. The heat storage device according to claim 8, wherein the heat conductor is a metal fiber. 10. The heat storage device according to claim 1, wherein an anhydrous salt of a hydrated salt type latent heat storage material is used as the adsorbent. 11. The heat storage device according to claim 10, wherein the anhydrous salt of the hydrated salt type latent heat storage material is selected from calcium chloride or sodium sulfate, lithium bromide or lithium chloride.