JP2007285627A - Solidification/fusion promotion method of thermal storage material and thermal storage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermal storage capsule in a simple structure having high thermal transfer/storage performance and a thermal storage device having it. <P>SOLUTION: A thermal storage container 1 in which the thermal storage material 3 is enclosed is provided in a thermal storage tank 19 so as to enable heat exchange with a thermal medium flowing in and out from the thermal storage tank 19. The thermal storage material 3 solidifies to be a solid phase when its temperature is falling and fuses to be a liquid phase when its temperature is rising. A plurality of float bodies 5 floating on the thermal storage material 3 in the liquid phase in the thermal storage container 1 are provided and connected with each other by a connection body 4 having a high thermal conductivity. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for promoting solidification and melting of a heat storage material and a heat storage device for effectively using the latent heat generated with the phase change of the heat storage material.

  In recent years, in the industrial and private sectors, the consumption of electric energy has been steadily increasing due to the widespread use of cooling equipment, and there is a tendency for daytime power consumption to increase. In this way, when there is a disparity in power consumption between daytime and nighttime, it is necessary to invest in the power equipment according to the power consumption during the daytime. Recently, heat storage devices that store electricity using electric power at night, take out cold heat from the heat storage device in the daytime, and supply it for cooling are becoming widespread. These devices can reduce power consumption against peak cooling loads during the daytime, while using off-peak power during nighttime to achieve power load leveling, cooling energy conservation, and economic operation. I can plan.

As an example of a heat storage air conditioning system, in an air conditioning facility, a latent heat storage material (hereinafter referred to as “heat storage material”) is sealed in a bag container in a heat storage tank, and the refrigerator is driven using surplus power at night. Therefore, the heat storage material in the container is cooled and solidified by the heat medium supplied from the refrigerator to the heat storage tank, the cold heat is stored in the heat storage material, and the cold heat stored in the heat storage material is exchanged with cold water in the daytime. There is a heat storage container type heat storage system in which the air is cooled and heated with the cold water.

In a container enclosing a heat storage material, the heat storage material is solidified or melted by heat exchange on the heat transfer inner surface of the container. Although the heat transfer resistance between the heat medium as the heat transfer fluid around the container and the container is relatively small, the heat transfer resistance of the heat storage material solidified in the container is large, so the heat transfer resistance of the heat storage material is the entire heat storage system It has become a dominant factor that lowers the heat transfer performance. Therefore, the heat storage container requires a long heat storage time for the heat storage material to solidify and store heat, and it is difficult to follow a sudden load fluctuation on the load side during heat dissipation of the heat storage material.

Therefore, Patent Document _1, in the thermal storage vessel, the heat storage vessel, characterized in that charged in addition to water a high thermal conductivity metal wire mesh or wire as the heat storage material is disclosed. Since the metal wire mesh with high thermal conductivity is enclosed in the container together with the heat storage material, the heat transferred to the container by the heat medium is immediately transferred to the heat storage material, and the heat transfer resistance of the heat storage material in the container is reduced. The heat storage material can be solidified in a short time.

Patent Document 2 encloses a heat storage material and a foil-like metal such as aluminum, copper, or iron having a higher thermal conductivity than the heat storage material as a heat conduction promoting substance piece together with the heat storage material. Has been disclosed. By enclosing the heat conduction promoting substance piece in the heat storage container, even if the heat storage material is solidified, the heat transfer resistance in the heat storage container can be reduced, and efficient heat exchange is possible.

On the other hand, the heat storage container is required to prevent overcooling. Many of various heat storage materials are prone to the phenomenon of “supercooling” in which solid does not precipitate (= not solidify) even when the temperature falls below the melting point during cold storage heat. In particular, as the volume of the container enclosing the heat storage material is smaller, “supercooling” is more likely to occur. In order to store cold heat by precipitation and growth of solids in the heat storage material, the greater the “supercooling degree” that is the temperature difference between the temperature at which solids actually start to form (= solidification start temperature) and the melting point, the more Since it is necessary to perform cooling with a low-temperature heat medium, the efficiency of the refrigerator that cools the heat medium is lowered.

  Measures to avoid such a supercooled state include adding a nucleation substance that is likely to be a nucleus of crystal formation of the heat storage material, and applying impact force, vibration, stirring force, etc. to the heat storage material with an electromagnetic field or ultrasonic wave. It is known to grant.

  For example, Patent Document 3 discloses a heat storage container that encloses a heat storage material inside a container and stores heat exchanged with a heat medium that flows around the outside of the container. It is disclosed that the heat storage container can be made to flow, rotate, etc. by the flow of the heat medium by facilitating uniform dispersion in the medium, or by forming a container shape that flows, rotates, and vibrates by the flow of the heat medium. ing. In this way, the heat storage material inside the container is disturbed to reduce the degree of supercooling of the heat storage material in the container.

Patent Document 4 discloses that an inclusion compound (clathrate) such as Freon is enclosed as a heat storage material in a container, and a stirring device is provided in the container. Since the clathrate is stirred and mixed by the stirring device, heat transfer with the heat medium around the container is promoted, and the generation and decomposition of the clathrate are performed quickly. Examples of the agitating device include a propeller, a saddle blade, a turbine blade, a spiral blade, and the like that rotate and drive a blade by a motor.
JP 06-281371 A JP-A-11-270975 JP 2001-317887 A ACT 02-122982

  However, in Patent Document 1, a heat storage material and a wire mesh or a metallic wire are used for heat conduction promotion in the heat storage container, and in Patent Document 2, a foil-shaped metal is encapsulated, but a wire mesh, a metal wire, The foil-like metal is precipitated because the specific gravity is larger than that of the heat storage material, and it is difficult to uniformly disperse it in the heat storage material for a long period of time. As a result, the expected effect cannot be obtained.

  Next, in Patent Document 3, a container containing a heat storage material is floated and dispersed in a heat medium, and the container is made to flow, rotate, and vibrate by the flow of the heat medium, and the heat storage material in the container is stirred to supercool. However, the movement of the container due to the flow of the heat medium is not necessarily transmitted to the heat storage material in the container, and it is not effectively performed to prevent overcooling by stirring. In addition, the method of applying vibration by electromagnetic force or ultrasonic waves has the problem that extra energy and apparatus are required and the cost increases.

  In Patent Document 4, heat transfer is promoted by providing a stirrer in the container, but a mechanism for rotationally driving the stirrer blades is required, which complicates the apparatus and increases costs. There's a problem.

  In view of such circumstances, the present invention provides a heat storage material solidification and melting acceleration method and a heat storage device that can be manufactured at a low cost with a simple structure, have high heat transfer / heat storage performance, and can quickly release supercooling of the heat storage material. The purpose is to provide.

  In the first method relating to the acceleration of solidification and melting of the heat storage material of the present invention, the heat storage container in which the heat storage material that is solidified when the temperature is lowered and becomes a solid phase and melts and becomes a liquid phase when the temperature is increased is enclosed with respect to the heat storage tank. The heat storage tank is arranged to exchange heat with the heat medium flowing in and out.

  In the method for promoting solidification and melting of the heat storage material, in the present invention, in the heat storage container, a plurality of floating bodies floating on the heat storage material in the liquid phase are arranged, and the floating bodies are connected by a highly heat conductive connection body. It is characterized by that.

  In the present invention having such a configuration, since the coupling body is a good heat conductive material, the heat storage material is promoted by increasing the heat transfer rate by promoting the heat conduction of the heat storage material in the heat storage container during heat storage or heat dissipation. Solidification and melting can be promoted, and heat storage and heat dissipation are performed efficiently. Examples of the good heat conductive material forming the coupling body include metals such as aluminum and copper.

  When the heat storage material is in the liquid phase, the floating body and the connected body float in the heat storage material as the heat storage container vibrates or swings due to the flow of the heat medium around the heat storage container. It vibrates or swings in the material to stir the liquid phase heat storage material to prevent overcooling, and further prevents composition separation when the heat storage material consists of a plurality of compositions. If the floating body and the connected body have the same natural frequency as the flow rate fluctuation frequency of the heat medium and the rotation speed of the compressor of the refrigerator that cools the heat medium, and the amplitude is increased by resonance, the stirring effect is further improved. .

  Further, when the heat storage material is in the solid phase, the floating body and the coupling body function as a core material inside the solid phase heat storage material. When the heat storage material melts, there is this core material, so the solidified heat storage body is stable in the heat storage container, preventing the solidified heat storage material from being offset in the heat storage container during the melting, uniform To melt.

  In the present invention, the connection body may have branches or fins, or may be formed of a spiral body. By doing so, the heat transfer area with the heat storage material increases and further heat conduction is promoted. In the case of a spiral body, an elastic body is preferable. Since the floating body vibrates and moves due to the elastic force, the stirring is performed well.

As a result of measuring heat storage and heat dissipation of a heat storage container using a linking body with a hydrated heat storage material enclosed in a container and a rubber floating body and a thin aluminum wire with branches, a floating body and a coupling body are provided. Compared to the case without heat storage, the heat storage rate and the heat release rate exceeded about 10%, and it was confirmed that the heat transfer acceleration effect was high.

It is preferable that the floating body can be deformed to follow the expansion and contraction of the heat storage material. In this case, the floating body is preferably a hollow body having a sealed hollow space.

When the floating body can be deformed to follow the expansion and contraction of the heat storage material, volume expansion or contraction when the heat storage material changes from the liquid phase to the solid phase is absorbed by the contraction or expansion of the floating body. In this case, if the floating body is hollow, this correspondence is even better. By doing in this way, since the pressure rise or fall in the heat storage container due to the volume expansion or contraction of the heat storage material can be suppressed, it is not necessary to increase the thickness of the heat storage container, and the heat transfer performance can be improved. When the floating body is not hollow, it is preferable to use a material having elasticity such as rubber so as to absorb the volume change by following the expansion and contraction when the heat storage material changes phase. The inside of the floating body may be air, and when the volume of the floating body is about several to 10% with respect to the volume of the heat storage material in total, the heat storage performance as the entire heat storage container becomes extremely good.

  When the heat storage container for implementing the method for promoting solidification and melting of the heat storage material of the present invention is used in a heat storage device, heat exchange is performed with the heat medium in the heat storage tank into which the heat medium flows in and out. In the heat storage tank.

  When the heat storage container used in the method for promoting solidification and melting of the heat storage material of the present invention has a cylindrical shape and is arranged in the heat storage tank so that its axial direction is the vertical direction, the floating body and the connecting body are In order to float in the heat storage material in the vertical direction, it is better to make the floating body heavier as it is lower, or to be smaller and reduce buoyancy. Or you may attach a weight to the lowermost part of a floating body and a connection body.

  When the heat storage container used in the method for promoting solidification and melting of the heat storage material of the present invention is cylindrical and is arranged in the heat storage tank so that the axial direction thereof is the horizontal direction, the floating body and the coupling body are heat storage. Float in a horizontal position in the material. Further, when the connecting body is formed in a spiral shape, the floating body and the connecting body are likely to swing due to the flow of the heat medium around the heat storage container, and the heat storage material is well stirred.

  A heat storage device that implements the first method for promoting the solidification and melting of such a heat storage material is a heat storage container in which a heat storage material that is solidified when it cools down and becomes a solid phase and melts when it is heated and becomes a liquid phase is enclosed. In the heat storage device arranged in the heat storage tank so as to exchange heat with the heat medium flowing in and out of the heat storage tank, a plurality of floating bodies floating on the heat storage material in the liquid phase in the heat storage container have good heat. It is characterized by being connected by a conductive connector.

  Further, the second method of promoting the solidification and melting of the heat storage material is to store the heat storage material in the heat storage tank without using the heat storage container, and a heat medium distributed to the heat exchanger disposed in the heat storage tank. A plurality of floating bodies floating on the heat storage material in the liquid phase are arranged in the heat storage tank that cools and stores the heat storage material in the heat storage tank by heat exchange, and the floating bodies are connected with good heat conductivity. It is connected.

  And the heat storage apparatus for implementing this 2nd method is the heat storage in the liquid phase in the heat storage tank which stores the heat exchanger with which a heat medium distribute | circulates, and a heat storage material, and stores heat by heat exchange with a heat medium. It is characterized in that a plurality of floating bodies floating on the material are arranged and the floating bodies are connected to each other by a highly heat conductive connecting body.

  As described above, in the present invention, when a heat storage container is used, the heat storage material that solidifies when the temperature falls and becomes a solid phase and melts when the temperature rises to become a liquid phase is enclosed in the heat storage container. Has been arranged by connecting a plurality of floating bodies floating in the heat storage material in the liquid phase with a highly heat conductive connecting body, so the connecting body that is a heat conductive material is a heat storage container during heat storage and heat dissipation The heat conduction of the inner heat storage material is promoted, the heat transfer rate is increased, the solidification and melting of the heat storage material can be promoted, and heat storage and heat dissipation are efficiently performed.

  Furthermore, when the heat storage material is in the liquid phase, the floating body and the coupling body are floating in the heat storage material, and the heat storage container vibrates or swings due to the flow of the heat medium around the heat storage container. Therefore, the liquid phase heat storage material is agitated to prevent overcooling.

  In addition, even when the heat storage material is accommodated in the heat storage tank without using the heat storage container, the structure of the plurality of floating bodies connected by the connection body promotes the heat conduction of the heat storage material and has the same effect as described above. Bring. The same is true in that the liquid phase heat storage material can be stirred to prevent overcooling.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5 of the accompanying drawings.

<First embodiment>
In FIG. 1, a heat storage container 1 applied to the method for promoting solidification and melting of a heat storage material of the present invention includes a heat storage material 3 enclosed in a container body 2 made of, for example, a metal heat-conductive material. A plurality of floating bodies 5 connected by the connecting body 4 are suspended in the heat storage material 3.

  As shown in the drawing, the container body 2 has a vertically long cylindrical body, and the heat storage material 3 is accommodated in an internal space in a sealed state.

  The heat storage material 3 is a known latent heat storage material, which solidifies to a solid phase when the temperature is lowered and melts to a liquid phase when the temperature is raised.

  In this embodiment, the floating body 5 is made hollow with an elastic material such as rubber, and the outer shape is, for example, spherical or cylindrical. The material of the floating body 5 is not limited, but is preferably an elastic material so that the internal heat storage material 3 can cope with volume expansion / contraction due to phase change or temperature change. This is because the volume expansion / contraction of the heat storage material 3 can be absorbed to prevent an increase in pressure in the container body 2.

  The coupling body 4 is made as a metal wire or string material such as aluminum or copper, and in the present embodiment, a plurality of fins 4A are provided as a preferred form. The fins 4A increase the contact area between the connector 4 and the heat storage material 3, that is, the heat transfer area.

  The floating body 5 and the connecting body 4 float in the heat storage material 3 when the heat storage material 3 is in a liquid phase, and the heat storage container 1 vibrates due to the flow of the heat medium around the heat storage container 1 in the heat storage tank described later. As the liquid phase heat storage material 3 vibrates or swings, the liquid phase heat storage material 3 is agitated to prevent overcooling and to prevent composition separation of the heat storage material. Further, the temperature distribution of the heat storage material 3 in the container body 2 is made uniform.

  The floating body 5 and the connecting body 4 function as a core material inside the solidified heat storage material when the heat storage material 3 is solidified, and when the heat storage material melts, the presence of this core material causes the solidified heat storage material to be It comes to be stably located in the heat storage container 1, and it prevents that the solidification heat storage material in the middle of melting | disconnects in the heat storage container 1, and melt | dissolves uniformly.

  In the present invention, when the heat storage container 1 has a cylindrical shape and is disposed in the heat storage device so that its axial direction is horizontal, the floating body 5 and the connecting body 4 are horizontal as shown in FIG. It is better to float in the same direction. Further, when the connecting body 4 is formed in a spiral shape, particularly a coil spring-like elastic spiral body, when the heat medium around the heat storage container 1 flows, the connecting body 4 is connected to the floating body 5 due to the shape of the connecting body 4 and elastic elastic deformation. The body 4 is easy to swing.

  The heat storage container described above is used, for example, in the heat storage type air conditioner shown in FIG.

  The heat storage type air conditioning equipment of FIG. 3 is composed of a refrigerator A, an air conditioning load device B, and a heat storage device C as a cold heat source device.

  The refrigerator A includes a condenser 11, an expansion valve 12, a compressor 13, a heat exchanger 14 typified by a double pipe heat exchanger or a plate heat exchanger, and a pipe connecting them.

  The air conditioning load B includes an air conditioner 15, a pump 16 for circulating water or an antifreeze liquid for supplying cold air to the air conditioner 15, and a pipe connecting them.

  Cold water or antifreeze liquid 17 is used as the heat medium of the heat storage device C. The heat storage device C includes a pump 18 that circulates cold water or antifreeze liquid, a heat storage material enclosed therein, and a floating body and a well-conductive connection body. The heat storage tank 19 in which the heat storage container 1 provided with the above is loaded and the piping connecting them are configured. The heat storage tank 19 is filled with a heat medium of cold water or antifreeze liquid 17.

  In the heat storage device of this embodiment, first, when storing heat, the cold water or antifreeze liquid pump 18 of the refrigerator A and the heat storage device C is operated, and the cold water or antifreeze liquid 17 cooled by the refrigerator A is placed in the heat storage tank 19. The heat is stored in the heat storage container 1 by circulation. At the time of cold heat recovery, the cold water or antifreeze liquid circulation pump 18 is stopped, the water or antifreeze liquid circulation pump 16 is operated, the cold heat stored in the heat storage container 1 is taken out, and the cold heat is supplied to the air conditioner 15.

  When the stored cold energy is exhausted, the cold energy obtained by the refrigerator A can be used by operating the cold water or antifreeze circulating pump 18 of the refrigerator A and the heat storage device C. As the air conditioning load B, in addition to the above-described configuration, the heat extracted from the heat storage tank may be exchanged with a heat medium by a heat exchanger, or the heat pump using the cold heat extracted from the heat storage tank as a low-temperature heat source. A mechanism or a heat pipe mechanism may be applied.

<Second embodiment>
In this embodiment, the heat storage material is accommodated in the heat storage tank without using the heat storage container, the heat storage material in the heat storage tank is not distributed, and the refrigerant circulated through the heat exchanger is sent to the air conditioning load (indoor air conditioner). There is a feature in the point.

  FIG. 4 is a diagram for explaining the configuration of the regenerative air conditioning equipment according to the second embodiment of the present invention. In the heat storage type air conditioner of the present embodiment, each component constituting each of the cold heat source device A, the air conditioning load device B, and the heat storage device C is connected by a refrigerant pipe, and a refrigerant as a heat medium is provided in the middle of the refrigerant pipe. The refrigeration cycle circuit is configured by connecting the switching valves 21, 22, and 23 for switching the flow paths.

  The cold heat source apparatus A includes a compressor 24 that pressurizes the refrigerant, and an outdoor heat exchanger 25 that performs heat exchange between the outside air and the refrigerant in the refrigeration cycle.

  In addition, the air conditioning load device B is installed indoors and heat exchanges between the indoor air and the refrigerant in the refrigeration cycle, and the refrigerant flowing into the indoor heat exchangers 26A and 26B. Are provided with decompression devices 27A and 27B. In the present embodiment, the air conditioning load device B is configured by arranging two indoor heat exchangers in parallel. However, the present invention is not limited to this, and there may be one indoor heat exchanger or three or more indoor heat exchangers. It may be.

  Furthermore, the heat storage device C includes a heat storage tank 28 for storing the heat storage material, a heat storage material 29 stored in the heat storage tank 28, a heat storage heat exchanger 30 for exchanging heat between the heat storage agent 29 and the refrigerant of the refrigeration cycle, A pressure reducing device 31 is provided for reducing the pressure of the refrigerant sent to the heat storage heat exchanger 30. The heat storage tank 28 is connected to a pump 32 that circulates the heat storage material 29. The heat storage material 29 is a known latent heat storage material, and solidifies to become a solid phase when the temperature falls, and melts to a liquid phase when the temperature rises.

  In the heat storage device C, a heat exchanger 30 formed of a heat transfer tube is introduced into a heat storage tank 28 in which a heat storage material 29 is accommodated, as shown in detail in FIG. The heat exchanger 30 is formed by meandering a heat transfer tube as shown in the figure, and is disposed in the heat storage material 29. In the vicinity of the heat exchanger 30, a plurality of floating bodies 5 connected by a connecting body 4 having fins 4A are suspended. This is similar to the heat storage container 1 of FIG. 1, but differs in that the floating body and the connecting body are not accommodated in the container body and are disposed directly in the vicinity of the heat exchanger 30. ing. Further, the heat storage tank 28 is provided with an inflow pipe 32A through which the liquid phase heat storage material is introduced by the pump 32 shown in FIG. With this inflow pipe 32A and the discharge pipe 32B, when melting the solid-phase heat storage material solidified during the heat storage-use cooling operation, the liquid-phase heat storage material is discharged from the bottom, and is circulated by flowing from above the liquid-phase liquid surface. I have to.

The operation method of the regenerative air conditioning system according to the second embodiment of the present invention configured as described above will be described separately for a heat storage operation method for storing heat and a heat storage-based cooling operation method using heat storage.
-Thermal storage operation method During the thermal storage operation, the on-off valves 21 and 22 are closed and the on-off valve 23 is open.

  The refrigerant compressed by the compressor 24 is cooled and condensed by heat exchange with air in the outdoor heat exchanger 25. The cooled refrigerant is decompressed by the decompression device 31 and evaporated by the heat storage heat exchanger 30. At this time, the heat storage material 29 is cooled to store the cold energy. The evaporated refrigerant returns to the compressor 24 and repeats this cycle.

  The liquid-phase heat storage material is cooled and solidified on the surface of the heat storage heat exchanger 30, and the solid-phase heat storage material adheres. Further, the solid-phase heat storage material faces away from the surface of the heat storage heat exchanger 30. 29A grows in a lump shape (see FIG. 5). The floating body 5 and the connection body 4 are included in the inside of the massive body when the massive body of the solid phase heat storage material 29A grows.

In this heat storage operation, since the plurality of floating bodies 5 floating on the heat storage material in the liquid phase are arranged by being connected by the connection body 4 having good heat conductivity, the connection body 4 that is a good heat conductivity material is provided. The heat conduction of the heat storage material 29 in the heat storage tank 28 is promoted, the heat transfer rate is increased, the solidification of the heat storage material 29 can be promoted, and heat storage is performed efficiently.
-Heat storage cooling operation method During the heat storage cooling operation, the on-off valves 21 and 23 are closed, the on-off valve 22 is open, and the pressure reducing device 31 is fully open. The refrigerant compressed by the compressor 24 is cooled and condensed by heat exchange with air in the outdoor heat exchanger 25. The decompression device 31 is in a fully open state, and the refrigerant flows through the heat storage heat exchanger 30 without being decompressed. The refrigerant flowing through the heat storage heat exchanger 30 is further cooled by the heat storage material 29 and is in a supercooled state. The supercooled refrigerant is decompressed by the decompression devices 27A and 27B of the air conditioning load device B and evaporated by the indoor heat exchangers 26A and 26B. At this time, the air is cooled and air conditioning is performed. The evaporated refrigerant returns to the compressor 24 and repeats this cycle. The solid-phase heat storage material 29A dissipates cold by heat exchange with the refrigerant, and melts from the heat exchange surface of the heat storage heat exchanger 30 to become a liquid phase.

  In this heat storage-based cooling operation, the floating body 5 and the well-conductive connecting body 4 are included in the solid-phase heat storage material 29A, so that the connecting body 4 that is a good heat-conductive material adheres to the heat exchanger 30. The heat conduction of the solid solid phase heat storage material 29A is increased, the heat transfer rate is increased, the melting of the heat storage material is promoted, and the heat is efficiently dissipated.

  This regenerative cooling operation is completed when the regenerative air conditioning system determines that there is no remaining heat storage in the heat storage tank 28. Subsequent cooling air-conditioning is performed by opening the on-off valve 21 and closing the decompression device 31 so that the refrigerant bypasses the heat storage tank 28.

  When the circulation of the liquid phase heat storage material shown in FIG. 5 is performed to promote the melting of the heat storage material, the heat exchange surface of the heat exchanger 30 for heat storage and the fin 4A surface of the fin 4A of the well heat conductive connector 4 are solidified. The phase heat storage material 29A is first melted to form a gap with the fins 4A, and the liquid phase heat storage material 29 is transmitted through the gap and circulates in the heat storage tank 28, thereby facilitating the melting of the heat storage material 29 and efficiently radiating heat. Is done.

  In addition, when the floating body 5 and the good heat conductive connecting body 4 float in the liquid-phase heat storage material as the melting progresses further, the floating body and the connecting body vibrate or swing due to the circulation flow. Furthermore, melting of the heat storage material can be promoted, and heat can be radiated efficiently.

It is sectional drawing which shows the thermal storage container applied to the apparatus of 1st embodiment of this invention. It is sectional drawing which shows the modification of a thermal storage container. 1 is a schematic configuration diagram of a regenerative air conditioning facility as a first embodiment of the present invention. It is a general | schematic block diagram of the thermal storage type air conditioner as 2nd embodiment of this invention. 4 is a diagram showing the details of the heat storage tank of the apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal storage container 3 Thermal storage material 4 Connection body 4A Fin 5 Floating body 19 Thermal storage tank 28 Thermal storage tank 29 Thermal storage material 30 Heat exchanger

Claims (8)

  In the heat storage tank, heat exchange is performed between the heat storage container in which the heat storage material that solidifies when the temperature falls and becomes a solid phase when melted and becomes a liquid phase is exchanged with the heat medium flowing into and out of the heat storage tank. Arrangement of a plurality of floating bodies floating on the heat storage material in the liquid phase in the heat storage container, and the floating bodies are connected to each other by a highly heat-conductive connection body. Method.   The method for accelerating solidification and melting of a heat storage material according to claim 1, wherein the connector has branches or fins.   The method for promoting solidification and melting of a heat storage material according to claim 1, wherein the coupling body is a spiral elastic body.   The method for promoting solidification and melting of a heat storage material according to claim 1, wherein the floating body can be deformed to follow expansion and contraction of the heat storage material.   The method for promoting solidification and melting of a heat storage material according to claim 1 or 4, wherein the floating body is a hollow body having a sealed hollow space.   A plurality of floating in the heat storage material in the liquid phase in the heat storage tank for storing heat by cooling the heat storage material in the heat storage tank by heat exchange with the heat medium distributed in the heat exchanger disposed in the heat storage tank A method for accelerating solidification and melting of a heat storage material, characterized in that the floating bodies are arranged and the floating bodies are connected to each other with a good heat conductive connecting body.   In the heat storage tank, heat exchange is performed between the heat storage container in which the heat storage material that solidifies when the temperature falls and becomes a solid phase when melted and becomes a liquid phase is exchanged with the heat medium flowing into and out of the heat storage tank. In the heat storage device arranged, a plurality of floating bodies floating on the heat storage material in the liquid phase in the heat storage container are connected by a highly heat conductive connecting body.   A plurality of floating bodies floating in the heat storage material in the liquid phase are arranged in the heat storage tank that stores the heat exchanger through which the heat medium is circulated and the heat storage material and stores heat by heat exchange with the heat medium. A heat storage device characterized by being connected by a good heat conductive connector.

Images