JPH1123171A - Arranging method for heat storage material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for arranging heat storage materials such that heat exchange between the heat storage material and a heat exchanging medium can be carried out uniformly over the entire heat storage tank. SOLUTION: Three heat storage materials 1,... are bundled and a plurality of heat storage material groups 10,... are formed. Assuming the gap between the heat storage materials 1,... belonging to a same heat storage material group 10 is (a) and the gap between a heat storage material A belonging to some heat storage material group 10 and a heat storage material B belonging to an adjacent heat storage material group 10 and contiguous to the heat storage material A is (b), the heat storage material groups 10,... are arranged in a heat storage tank to satisfy a formula; b/a>=1.05. According to the arrangement, a curved main flow of a heat exchanging medium is formed in the gap (b) and a curved branch of the heat exchanging medium is formed in the gap (a). Since the flow of the heat exchanging medium can be made uniform and smooth in the heat storage tank, the heat exchanging medium can be brought into efficient contact with each heat storage materials 1,....

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for arranging a heat storage material used for heat storage or cold storage in a heat storage tank.

[0002]

2. Description of the Related Art In recent years, a heat source such as a refrigerator or a heat pump is operated at night or the like by using late-night electric power or the like to store electricity in a heat storage tank for the purpose of saving electricity rates and energy saving. And so on. A plurality of heat storage materials are loaded inside the heat storage tank.

As a method of arranging a heat storage material in a heat storage tank,
For example, Japanese Patent Application Laid-Open No. 8-152284 discloses a method of forming a mat by integrally connecting dozens of heat storage materials and arranging a plurality of the mats in a cool storage tank (heat storage tank). ing. Japanese Patent Application Laid-Open No. 8-152285 discloses a method of forming a block having a substantially rectangular cross section by bundling dozens of heat storage materials, and arranging a plurality of the blocks in a cool storage tank. I have.

[0004]

However, in the above-described conventional method of arranging the heat storage material, the heat storage material is arranged in the cool storage tank by forming a mat or a block.
The heat transfer medium easily flows around the mat or the block.
For this reason, the flow of the heat transfer medium is biased in the heat storage tank, and the contact state of the heat transfer medium with each heat storage material becomes uneven. In addition, a so-called water stop area (retention area) where a heat transfer medium hardly flows in the heat storage tank is likely to occur. That is, since the flow of the heat transfer medium in the heat storage tank cannot be made uniform and smooth, the heat transfer medium cannot be efficiently brought into contact with each heat storage material. Therefore, the above-described conventional method of arranging the heat storage material has a problem in that heat exchange between the heat storage material and the heat transfer medium is not performed uniformly over the entire heat storage tank, so that the heat storage efficiency is low.

[0005] For this reason, there is a need for a method of arranging a heat storage material that allows heat exchange between the heat storage material and the heat transfer medium to be performed uniformly over the entire heat storage tank. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and has as its object to arrange a heat storage material capable of uniformly performing heat exchange between the heat storage material and the heat transfer medium over the entire heat storage tank. Is to provide.

[0006]

According to a first aspect of the present invention, there is provided a method for arranging a heat storage material, wherein a plurality of heat storage materials are bundled by a bundle member to form a plurality of heat storage material groups. The heat storage material group is disposed in the heat storage tank so that a gap is formed between the adjacent heat storage material groups by the binding member.

According to the first aspect of the present invention, since a gap is formed between the heat storage material groups adjacent to each other, the heat transfer medium flows through the gap. For this reason, the flow of the heat transfer medium in the heat storage tank can be made uniform and smooth, and a so-called water blocking area is less likely to be generated, so that the heat transfer medium can be efficiently brought into contact with each heat storage material. Thereby, the heat exchange between the heat storage material and the heat transfer medium can be performed uniformly over the entire heat storage tank, so that the heat storage efficiency is improved. Also,
Since the heat storage material group is formed, even when the heat storage medium is loaded in the heat storage tank, the heat storage material can be easily arranged and withdrawn in the heat storage tank, and the heat storage material can be overturned and misaligned. Can be prevented.

According to a second aspect of the present invention, there is provided a method for arranging a heat storage material, wherein the plurality of heat storage material groups are formed by bundling a plurality of cylindrical heat storage materials loaded with a heat storage agent. Is formed, and the main flow in which the heat transfer medium flows in a curved manner in the gap between the heat storage material groups adjacent to each other is formed, while the heat transfer medium is curved in the gap between the heat storage materials belonging to the same heat storage material group. The heat storage material group is arranged in a heat storage tank so that a flowing tributary is formed.

According to the second aspect of the present invention, the main flow in which the heat transfer medium flows in a curved manner is formed in the gap between the adjacent heat storage material groups, while the gap between the heat storage materials belonging to the same heat storage material group is formed. A tributary flow is formed in which the heat transfer medium flows in a curved manner.
For this reason, the flow of the heat transfer medium in the heat storage tank can be made uniform and smooth, and a so-called water blocking area is less likely to be generated, so that the heat transfer medium can be efficiently brought into contact with each heat storage material. Thereby, the heat exchange between the heat storage material and the heat transfer medium can be performed uniformly over the entire heat storage tank, so that the heat storage efficiency is improved. Further, since the heat storage material group is formed, even in a state where the heat storage medium is loaded in the heat storage tank, the heat storage material can be easily arranged in the heat storage tank and withdrawn, and the heat storage material can be turned over and over. Shift can be prevented.

According to a third aspect of the present invention, there is provided a method for disposing a heat storage material, wherein a plurality of heat storage material groups each formed by bundling a plurality of tubular heat storage materials loaded with a heat storage agent. And the width of the gap between the heat storage materials belonging to the same heat storage material group is defined as a, and the heat storage material A belonging to a certain heat storage material group and the heat storage material belonging to the heat storage material group adjacent to this heat storage material group When the width of the gap between the heat storage material B adjacent to A is b, the heat storage material group is arranged in the heat storage tank so as to satisfy the inequality (1) b / a ≧ 1.05 (1) It is characterized by doing.

According to the third aspect of the present invention, the heat transfer medium includes a gap between the heat storage materials belonging to the same heat storage material group, and
A heat storage material A belonging to a certain heat storage material group, and a heat storage material B belonging to a heat storage material group adjacent to the heat storage material group and adjacent to the heat storage material A
And both flow through the gap. For this reason, the flow of the heat transfer medium in the heat storage tank can be made uniform and smooth, and a so-called water blocking area is less likely to be generated, so that the heat transfer medium can be efficiently brought into contact with each heat storage material. Thereby, the heat exchange between the heat storage material and the heat transfer medium can be performed uniformly over the entire heat storage tank, so that the heat storage efficiency is improved. Further, since the heat storage material group is formed, even in a state where the heat storage medium is loaded in the heat storage tank, the heat storage material can be easily arranged in the heat storage tank and withdrawn, and the heat storage material can be turned over and over. Shift can be prevented.

According to a fourth aspect of the present invention, there is provided a method for arranging a heat storage medium, wherein the heat transfer medium has a flow direction of heat storage medium. The heat storage material group is arranged in a heat storage tank so as to be in a non-axial direction of the material.

According to the fourth aspect of the present invention, the heat transfer medium flows while contacting each heat storage material. For this reason, the heat transfer medium can be brought into more efficient contact with each heat storage material. Thereby, the heat exchange between the heat storage material and the heat transfer medium can be performed more uniformly over the entire heat storage tank.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

The shape of the heat storage material may be any shape as long as the method for arranging the heat storage material according to the present invention can be applied.
There is no particular limitation. The shape of the heat storage material can be, for example, various shapes such as a cylindrical shape, a rectangular tube type, and a capsule type. Of these, the cylindrical type is particularly preferable because it can be easily and inexpensively manufactured and is easy to handle, and the flow of the heat transfer medium can be made more uniform and smooth. In the following description, a case where the shape of the heat storage material is cylindrical will be described as an example.

As shown in FIG. 2, the heat storage material 1 suitable for applying the method of arranging the heat storage material according to the present embodiment is a substantially cylindrical container 3 which is vertically elongated in a state of being placed in a heat storage tank. When,
And a heat storage agent (not shown) loaded inside the container 3.

The heat storage agent is not particularly limited as long as it has a heat storage property, but more preferably has a latent heat storage property due to a phase change between a solid phase and a liquid phase. Specific examples of the heat storage agent include paraffins such as n-paraffin, paraffin wax, isoparaffin, polyethylene wax, and high-density polyethylene such as tetradecane, pentadecane, and hexadecane; caprylic acid, capric acid, lauric acid, and myristine. Fatty acids such as acid, stearic acid and palmitic acid; fatty acid esters such as butyl stearate; higher alcohols such as decanol, dodecyl alcohol, pentaerythritol, pentaglycerin and neopentyl glycol; calcium chloride hexahydrate, sodium sulfate 10 Water salt, disodium phosphate dodecahydrate, zinc nitrate hexahydrate, sodium thiosulfate pentahydrate, sodium acetate trihydrate, barium hydroxide octahydrate, magnesium nitrate hexahydrate, ammonium aluminum sulfate dodecahydrate, chloride Ma Neshiumu such hexahydrate, hydrates of inorganic; and the like. Among the above-mentioned compounds, paraffins have various advantages such as that a high latent heat of fusion is obtained with a clear freezing point, and that the freezing point, that is, the phase change temperature can be arbitrarily set. Is particularly preferred.

The form of use of the heat storage agent is not particularly limited. For example, the compounds exemplified above may be used as they are, or may be gelled using a gelling agent (coagulant). You may use it in the state that it was. For example, when the heat storage agent is used in a gelled state, even if the container 3 is damaged by some factor, it is possible to prevent the heat storage agent from leaking.

The material of the container 3 may be selected according to, for example, the type of the heat storage agent, and is not particularly limited.
Synthetic resins and metals are more preferred. For example, when the heat storage agent is an inorganic hydrate, polyethylene is preferable. When the heat storage agent is paraffin or the like, polyvinyl chloride or polyethylene terephthalate (PET) is used. ) Are preferred.

The above-mentioned container 3 has a cylindrical container body 3a.
And an upper lid 3b and a lower lid 3c. The container body 3a and the lower lid 3c are completely sealed by, for example, an adhesive. Alternatively, the container body 3a and the lower lid 3c may be formed by integral molding. On the other hand, the container body 3a and the upper lid 3b are not completely sealed in order to prevent the container 3 from being damaged by a change in internal pressure due to a change in volume due to thermal expansion and contraction of the heat storage agent.
In addition, an air hole (not shown) of an appropriate size is provided at a predetermined position of the upper lid portion 3b, for example, at a top surface portion, while the container body 3a is provided.
And the upper lid 3b can be completely sealed. Alternatively, when a heat storage agent is loaded in the container 3 so that a predetermined space sufficient to alleviate the above-mentioned volume change remains inside, the vent hole may not be provided in the upper lid 3b or the like. .

In short, the container 3 has a structure capable of alleviating a change in internal pressure due to a change in volume of the heat storage agent. The container 3 is loaded with an amount of heat storage agent that forms a predetermined space inside. That is, the heat storage agent is not filled into the container 3 but is injected into the container 3 so that a predetermined space remains so as to be able to cope with a change in volume.

The size of the heat storage material 1, that is, the size of the container 3, may be appropriately set according to the use, the size of the heat storage tank, and the like, and is not particularly limited. For example, if the diameter of the container 3 is large, the unit price of the heat storage material 1 is high, but the number of the heat storage materials to be arranged in the heat storage tank is small, so that the overall cost is low. That is, if the diameter of the container 3 is large, the cost per unit weight of the heat storage materials 1 in the heat storage tank can be reduced. On the other hand, as the diameter of the container 3 increases, the heat transfer to the central portion of the heat storage material 1 decreases.
Therefore, the diameter of the container 3 is more preferably set in the range of 2 cm to 10 cm so that the overall cost can be kept low without lowering the heat transfer to the central part of the heat storage material 1. .

The length (height) of the container 3 depends on the purpose and
What is necessary is just to set suitably according to the liquid depth of the heat transfer medium in a heat storage tank. Specifically, the container 3 only needs to have a length (height) such that the heat transfer medium does not flow into the inside through, for example, the ventilation hole. For example, when the liquid depth of the heat transfer medium is 1 m, the length (height) of the container 3 is 1. considering the distance from the liquid surface to the vent hole, downsizing of the heat storage tank, cost, and the like. 1m
It is more preferable to set the distance within a range of from 1.3 m to 1.3 m.

Further, the thickness of the container 3 may be set in consideration of the thermal conductivity of the material constituting the container 3, desired mechanical strength, durability and the like, and is not particularly limited. . As the thickness of the container 3 decreases, the heat conductivity improves. On the other hand, a certain thickness is required to maintain mechanical strength and durability. Therefore, in consideration of these facts, when the container 3 is made of a synthetic resin, it is more preferable that the thickness of the container 3 is set in a range of 0.3 mm to 3 mm.

If necessary, a weight (not shown) may be attached to the bottom of the container 3 so that the heat storage material 1 can stand on its own while immersed in the heat transfer medium. . As the above-mentioned weight, specifically, for example, sand (specific gravity: 2 to 2.5), stone (specific gravity: 2 to 2.5), lead (specific gravity: 11.4), iron (specific gravity: 7. 8) and the like, but are not particularly limited. The specific gravity of the weight may be greater than the specific gravity of the heat transfer medium and the specific gravity of the heat storage agent.

The upper cover 3b and / or the lower cover 3
c (hereinafter, referred to as lids 3b, 3b) also has a function as a so-called spacer. That is, the heat storage material 1
When a plurality of are bundled, by the lids 3b and 3c,
Between the heat storage materials 1.1 adjacent to each other, that is, the container body 3a
A gap having a predetermined width is formed between 3a. The protruding amounts (widths) of the lids 3b and 3c from the surface of the container body 3a may be set according to the diameter and length of the container 3, and are not particularly limited.
mm is preferred. By appropriately setting the magnitude of the protrusion amount (width), the width of the gap to be formed between the heat storage materials 1 and 1 belonging to the same heat storage material group can be arbitrarily and easily set.

In the method for arranging heat storage materials according to the present invention, a plurality of heat storage materials are formed by bundling a plurality of heat storage materials 1... In the following description, a case where three heat storage materials 1 are bundled by three, that is, a case where each heat storage material group is constituted by three heat storage materials 1.1.1 will be described as an example.

As shown in FIGS. 3A and 3B, the heat storage material group 10 according to the present embodiment includes three heat storage materials 1.
1 is formed by bundling with a bundling member 2.
The heat storage material group 10 includes, as shown in FIG.
The upper lid 3b may be bundled by the bundling member 2, and as shown in FIG.
Of the container main body 3a may be bundled by the bundle member 2. The heat storage materials 1 may be bundled by one bundling member 2 or may be bundled by two or more bundling members 2. Further, both the upper cover 3b and the container body 3a of the heat storage materials 1 may be bundled by the bundling members 2. Of course, the heat storage materials 1... The lower lid 3 c may be bound by the binding member 2. In the following description, the case of bundling the upper lid portion 3b of the heat storage materials 1... Will be referred to as bundling, and the case of bundling the container body 3a of the heat storage materials 1.

The bundling member 2 has a predetermined mechanical strength such as tensile strength and abrasion resistance, and is made of a material which is inert (has resistance) to the heat transfer medium. Examples of the material include a synthetic resin, a natural rubber, a synthetic rubber, and a metal, but are not particularly limited. The shape of the bundling member 2 includes, for example, a tape shape, a string shape, and a ring shape, but is not particularly limited. That is, when the shape of the bundling member 2 is, for example, a tape shape or a string shape, the bundling member 2 is configured to bind the heat storage materials 1... If the shape is a ring (for example,
In the rubber band), the heat storage material 1 ...
Are inserted and then the heat storage materials 1 are bundled by removing and compressing the stress. In short, the bundling member 2 is in such a degree that the heat storage material 1 does not easily fall off.
What is necessary is just a structure which can bundle these heat storage materials 1 ....

The thickness (thickness) of the bundling member 2 depends on the material of the bundling member 2, the size and number of the heat storage materials 1,..., And the width of the gap to be formed between the heat storage material groups 10 adjacent to each other. What is necessary is just to set according to etc., Although it does not specifically limit, 0.05 mm or more is suitable. By appropriately setting the thickness (thickness) of the bundling member 2, a gap formed between the heat storage material groups 10 adjacent to each other can be easily set to an arbitrary width.

In the arrangement method according to the present embodiment, the bundling members 2 of the heat storage material groups 10
The heat storage materials 1 of the other heat storage material group 10 may be disposed so that the two heat storage material groups 10 are in contact with each other.

Next, when two heat storage material groups 10 having the above configuration are arranged adjacent to each other, the heat storage material 1.
The gap between the two will be described. In the method of arranging the heat storage materials according to the present embodiment, the “gap between the heat storage materials 1” refers to the “gap between the container bodies 3a”.

As shown in FIG. 4A, heat storage material groups 10 and 10 are bundled in a bundling manner, or as shown in FIG. 4B, heat storage material groups 10 and 10 are bundled in a bundling manner. To
Consider a case in which the heat storage materials 1 belonging to one heat storage material group 10 are arranged so as to be adjacent to each other and in the middle of the heat storage materials 1.1 belonging to the other heat storage material group 10. In this case, the arrangement of the heat storage materials 1 to be closest packed is prevented by the bundling member 2. That is, the bundling member 2 also has a function as a so-called spacer. Therefore, when the heat storage materials 10 are arranged so as to be adjacent to each other, the state in which the heat storage materials 1 are closest packed is avoided by the bundling member 2.

Therefore, the width of the gap between the heat storage materials 1.1 belonging to the same heat storage material group 10 is defined as a, and the heat storage material 1 (heat storage material A) belonging to one heat storage material group (a certain heat storage material group) 10 is used. ) And the width of the gap between the heat storage material 1 (heat storage material B) that belongs to the other heat storage material group 10 and is adjacent to the heat storage material 1 (heat storage material A) is b, the inequality b> a (where a ≠ 0) holds.

Here, the diameter (outer diameter) of the container body 3a of the heat storage material 1 is x, the diameters (outer diameter) of the lids 3b and 3c are y, and the thickness (thickness) of the bundle member 2 is z. . In addition, heat storage material group 1
Reference numerals 0 and 10 denote that the bundling members 2 and 2 are arranged so as to contact each other.

As shown in FIG. 5, in the heat storage material groups 10 bundled in a bundling manner, the width a is represented by a = y-x. Further, the width b is represented by b = {(y / 2) ² + (y + 2z) ² } ^1/2 −x from Pythagoras's theorem. Accordingly, the ratio b / a of the width of the gap is b / a = [{(y / 2) ² + (y + 2z) ² } ^1/2 −
x] / (y−x).

On the other hand, as shown in FIG. 6, in the heat storage material groups 10 and 10 bundled in a bundling manner, the width b is b = {(y / 2) ² + (x + 2z) ² } ^1/2 − It is represented by x. Therefore, the ratio b / a of the width of the gap is b / a = [{(y / 2) ² + (x + 2z) ² } ^1/2 −
x] / (y−x).

Specifically, for example, in the heat storage material groups 10 and 10 bundled in a bundling manner, the diameter x of the container body 3a
Is 60 mm, the diameter y of the lids 3b and 3c is 64 mm, and the thickness z of the bundle member 2 is 0.04 mm, the width a
Is a = 64−60 = 4 (mm), and the width b is b = {(64/2) ² + (60 + 2 × 0.04) ² ｝ ^{1 /} 2−60 ≒ 8.07 (mm) The ratio b / a of the width of the gap is b / a = 8.07 / 4 ≒ 2.02.

When a plurality of heat storage material groups 10 bundled in a bundling manner are erected (arranged) in the heat storage tank, a pattern as shown in FIG. 7 is obtained. When a plurality of heat storage material groups 10 bundled in a bundling manner are erected (arranged) in the heat storage tank, a pattern as shown in FIG. 8 is obtained. In these patterns, a heat storage tank (not shown) contains heat storage material groups 10.
Are packed so as to be as dense as possible, but the bundling member 2 avoids a state in which the heat storage materials 10, that is, the heat storage materials 1 are packed in the closest packing. Therefore, the heat storage material 1
-A gap having a predetermined width (a or b) is secured between one.

In the arrangement method according to the present invention, the heat storage material groups 10 are arranged in the heat storage tank such that a gap is formed by the bundling members 2 between the heat storage material groups 10 adjacent to each other. That is, by adopting the arrangement method according to the present invention, at least two types of gaps having different widths are formed between the heat storage materials 1.

Therefore, when the heat transfer medium is caused to flow into the heat storage tank in which the heat storage material groups 10 are arranged by employing the arrangement method according to the present invention, as shown in FIG. The main flow 22b, in which the heat transfer medium 22 flows in a curved manner, is formed in the gap having a width b between the heat storage materials 10 and 10, while the main flow 22b is formed in the gap having the width a between the heat storage materials 1.1 belonging to the same heat storage material group 10. The tributaries 22a through which the heat medium 22 flows in a curved manner are formed. The heat storage material groups 10, that is, the heat storage materials 1 are arranged in the heat storage tank so as to be vertically long. Therefore, the flow direction of the heat transfer medium 22 is the non-axial direction of the heat storage materials 1.
2 flows while contacting each heat storage material 1.
Therefore, the heat transfer medium 22 can be brought into more efficient contact with each of the heat storage materials 1..., And the heat exchange between the heat storage materials 1 and the heat transfer medium 22 is performed more uniformly over the entire heat storage tank. be able to. In FIG. 1, the flow of the heat transfer medium 22 is schematically illustrated. Therefore, the heat transfer medium 22 flows in a main stream or a tributary even in a gap where the main stream 22b and the tributaries 22a are not described.

The heat transfer medium 22 specifically includes, for example, water, brine, ethylene glycol, etc., provided that the heat transfer medium 22 is inert to the materials constituting the heat storage tank and the heat storage materials 1. Well, it is not particularly limited.
The heat transfer medium 22 may be appropriately selected depending on the use and the like.

The size and shape of the heat storage tank are not particularly limited, and can be set variously according to the application. Further, for example, when there is an existing water tank such as a water tank for water heat storage or a septic tank, the existing water tank can be diverted as the heat storage tank. As the material of the heat storage tank,
Specifically, for example, FRP (fiber reinforced plast)
ic), steel, concrete and the like, but are not particularly limited. The heat storage tank can be manufactured using various materials depending on the application. Then, in order to make the heat transfer medium 22 flow more evenly in the heat storage tank, the flow path connecting the inlet and the outlet of the heat transfer medium 22 is the longest, specifically, for example, Preferably, the heat storage tank is provided with an inlet and an outlet so that the inlet and the outlet are formed substantially diagonally. The heat storage tank may be provided with a thermometer for measuring the temperature of the heat transfer medium 22 flowing in the heat storage tank.

The heat transfer medium 22 exchanges heat with the heat storage materials 1 by contacting the heat storage materials 1 while flowing as the main flow 22b and the tributaries 22a. In the method of arranging the heat storage material according to the present invention, the main flow 22b and the tributaries 22a are formed in the flow of the heat transfer medium 22 as described above. Therefore, the flow of the heat transfer medium 22 can be spread throughout the heat storage tank by the main streams 22b, and the heat transfer medium 22 can be brought into sufficient contact with the individual heat storage materials 1 by the tributaries 22a. . That is, the flow of the heat transfer medium 22 in the heat storage tank can be made uniform and smooth, so that a so-called water-stop region is less likely to be generated. Can be. Thereby, the heat exchange between the heat storage materials 1 and the heat transfer medium 22 can be performed uniformly over the entire heat storage tank, so that the heat storage efficiency is improved. In order to perform heat exchange between the heat storage media 1 and the heat transfer medium 22 more efficiently, the flow direction of the heat transfer media 22 is set to a direction substantially orthogonal to the axial direction of the heat storage media 1. More preferably, there is.

The ratio of the flow rate of each of the main stream 22b and the branch stream 22a in the flow of the heat transfer medium 22 is determined by the width a of the gap.
By appropriately setting the ratio between the width b and the width b, the ratio can be set to an arbitrary value. That is, the ratio between the width a and the width b of the gap is determined by appropriately setting the amount of protrusion (width) of the lids 3b and 3c from the surface of the container body 3a and the thickness (thickness) of the bundle member 2. By doing so, it can be set to any value. Specifically, for example, as shown in FIG. 9, if the bundling member 2 is made thicker, the width b becomes larger, so that the ratio b / a of the gap width becomes larger. In the arrangement method according to the present invention, it is preferable that the gap width ratio b / a is set to satisfy the inequality (1) b / a ≧ 1.05 (1). If the gap width ratio b / a does not satisfy the inequality (1), there is almost no difference between the flow rates of the individual main stream 22b and the tributary stream 22a, and the flow of the heat transfer medium 22 spreads throughout the heat storage tank. It is not preferable because it cannot be spread.

The upper limit of the ratio b / a of the gap width is preferably less than 10 (10> b / a). Gap width ratio b
If / a is 10 or more, the number of heat storage materials 1... Loaded per unit volume in the heat storage tank, that is, the loading ratio (so-called packing factor) becomes small. Therefore,
The total amount of heat stored in the heat storage tank decreases. Further, since the flow of the heat transfer medium 22 is substantially only the main flow 22b, the heat storage efficiency is reduced.

In the arrangement method according to the present invention, the flow rates of the individual main streams 22b can be made different from each other. Specifically, for example, as shown in FIG. 10, the heat storage materials 1. 1 bundled in a bundling manner are placed between the heat storage materials 1. 1 belonging to a certain heat storage material group 10.
The heat storage materials 1 belonging to different heat storage material groups 10 can be arranged so that the distances from the heat storage materials are different from each other. In this case, of the gap between the thermal storage material 1-1 belonging to different heat storage material group 10 - 10 to each other, the width b ₁ of the closer side of the gap may be satisfied the inequality (1). Thus, the main stream 2 flows and the flow rate of the main stream 22b flowing in the gap of the width b _1, farther side of the gap (width _{b 2, b 2> b 1} )
2b can be different from each other.

As shown in FIG. 11, the heat storage material groups 10...
When the heat storage material 1-1 belonging to 10 were placed in contact, the width b ₁ of the closer side of the gap, becomes equal to the width a. In this case, since the inequality (1) is not satisfied, the flow of the heat transfer medium 22 cannot be spread throughout the heat storage tank. Therefore, the arrangement method is unsuitable as the arrangement method according to the present invention.

In the above description, each heat storage material group 1
Although the case where 0 is composed of three heat storage materials 1.1.1 has been described as an example, the number of heat storage materials constituting the heat storage material group may be two or more, and is particularly limited. is not. In the present invention, various arrangement methods can be applied to the heat storage material group according to the number of heat storage materials constituting the heat storage material group.

For example, in a case where four heat storage materials 1 are bundled in a bundling manner so as to have a substantially rhombic cross section, a heat storage material group 10 is formed, as shown in FIG. In the middle of the heat storage material 1.1 belonging to the heat storage material group 10, another heat storage material group 10 is provided.
May be arranged so that the heat storage material 1 belonging to In this case, the ratio of the amount of heat that can be actually extracted by heat exchange (radiation) between the heat storage materials 1 and the heat transfer medium 22 to the theoretical amount of heat, that is, the heat storage efficiency is 0.8 or more. The heat storage efficiency becomes closer to 1 as the heat exchange is performed uniformly over the entire heat storage tank.

Further, for example, four heat storage materials 1 are bundled in a bundle so as to have a substantially square cross section to form a heat storage material group 10.
Is formed, as shown in FIG. 12 (b), the heat storage material 1 belonging to another heat storage material group 10 exists between the heat storage materials 1.1 belonging to a certain heat storage material group 10. It should just be arranged. Alternatively, the heat storage material groups 10 can be arranged such that the heat storage materials 1.1 belonging to different heat storage material groups 10 face each other as shown in FIG.
In this case, the width b is represented by b = (y−x) + 2z. Accordingly, the ratio b / a of the width of the gap is represented by b / a = {(y−x) + 2z} / (y−x).

Further, for example, when five heat storage materials 1 are bundled in a bundling manner to form a heat storage material group 10, FIG.
As shown in FIG. 3, the heat storage materials 1.
The heat storage material 1 belonging to another heat storage material group 10 may be arranged in the middle of 1. For example, when six heat storage materials 1 are bundled in a bundling manner so as to form a substantially equilateral triangle in cross section, a heat storage material group 10 is similarly formed.
May be arranged as shown in FIG. In this case, the heat storage efficiency is
0.87.

Further, for example, seven heat storage materials 1... Are bundled in a bundle so as to have a substantially regular hexagonal cross section to form a heat storage material group 10.
Are formed, they may be similarly arranged as shown in FIG. Further, for example, nine heat storage materials 1...
When 0 is formed, as shown in FIG. 16, the heat storage materials 1.1 belonging to different heat storage material groups 10 may be arranged so as to face each other.

As shown in FIG. 17, when the heat storage materials 1 are arranged in the heat storage tank by adopting the conventional arrangement method, that is, when the heat storage materials 1 are arranged so as to be closest packed. Has a heat storage efficiency of 0.77. therefore,
The arrangement method according to the present invention is superior in heat storage efficiency as compared with the conventional arrangement method.

As described above, the method of arranging the heat storage materials according to the present invention is such that a plurality of heat storage materials 1 are bundled by the bundling member 2 to form a plurality of heat storage material groups 10, and the heat storage materials adjacent to each other are formed. This is a method in which the heat storage material groups 10 are arranged in a heat storage tank such that a gap is formed between the groups 10 by the bundling members 2. According to the method, the heat transfer medium 22 flows through the gap.

Further, as described above, the method of arranging the heat storage material according to the present invention can be applied to the heat storage material groups 10 and 10 adjacent to each other.
The main flow 22b in which the heat transfer medium 22 flows in a curved manner is formed in the gap between the heat storage materials 1 belonging to the same heat storage material group 10.
A tributary 2 in which the heat transfer medium 22 flows in a curved manner in the gap between the two
This is a method in which the heat storage material groups 10 are arranged in a heat storage tank so that 2a is formed.

Further, as described above, according to the method for arranging heat storage materials, the width of the gap between the heat storage materials 1.1 belonging to the same heat storage material group The gap between the heat storage material 1 (heat storage material A) belonging to the heat storage material group 10 and the heat storage material 1 (heat storage material B) belonging to the heat storage material group 10 adjacent to the heat storage material group 10 and adjacent to the heat storage material 1 (heat storage material A). When the width is b, the heat storage material groups 10 are arranged in a heat storage tank so as to satisfy the inequality (1). According to the method, the heat transfer medium 22 flows through both the gap having the width a and the gap having the width b.

For this reason, the flow of the heat transfer medium 22 in the heat storage tank can be made uniform and smooth, so that a so-called water blocking area is less likely to be generated. Good contact can be achieved. Thereby, the heat exchange between the heat storage materials 1 and the heat transfer medium 22 can be performed uniformly over the entire heat storage tank, so that the heat storage efficiency is improved. Further, since the heat storage material groups 10 are formed, even when the heat transfer medium 22 is loaded in the heat storage tank,
It is possible to easily arrange and withdraw the heat storage materials 1 in the heat storage tank, and to prevent the heat storage materials 1 from falling and being displaced.

Further, in the method of arranging the heat storage material according to the present invention, as described above, the flow direction of the heat
Is a method in which the heat storage material groups 10 are arranged in a heat storage tank so as to be in the non-axial direction of. Therefore, the heat transfer medium 22
Flows while contacting each heat storage material 1. Therefore, the heat transfer medium 22 can be brought into more efficient contact with each of the heat storage materials 1..., And the heat exchange between the heat storage materials 1 and the heat transfer medium 22 is performed more uniformly over the entire heat storage tank. be able to.

In the above description, an example was given in which the lids 3b and 3c of the container 3 of the heat storage material 1 also functioned as so-called spacers for forming a gap having a width a. The method for forming the gap having the width a is not particularly limited. For example, heat storage material group 1
In the case where 0 is composed of three heat storage materials 1.1.1, as shown in FIG. 18, a cross section of a substantially equilateral triangle is formed between the heat storage materials 1.1.1 (the central portion). A gap having a width a may be formed by sandwiching the spacer 5. By appropriately setting the size of the spacer 5, the size of the width a can be easily set to an arbitrary width. The gap having the width a may be formed by the spacer 5, or may be formed by both the spacer 5 and the lids 3b and 3c. However, the width ratio b / a of the gap is set so as to satisfy the inequality (1).

Further, the lid 3 in the container 3 for the heat storage material 1
Instead of giving the function as a spacer to the b · 3c, for example, as shown in FIG.
May have a constricted shape. That is, instead of forming the container body 3a in a cylindrical shape, a gap having a width a may be formed by forming the container body 3a into a shape having a constriction. Even when the heat storage material 1 is formed in the above-mentioned shape, the heat storage material 1 is bundled by the bundling member 2 so that the heat storage material group 10 suitable for the method of arranging the heat storage material according to the present invention.
Can be formed.

[0062]

The present invention will be described in more detail with reference to the following Examples and Comparative Examples, but the present invention is not limited thereto.

Example 1 Diameter (outer diameter) of container body 3a
1 kg of paraffin as a heat storage agent (phase change temperature: 8.5 ° C.) in a container 3 in which x is 60 mm (inner diameter 58 mm), the diameter y of the lids 3 b and 3 c is 64 mm, and the length (total length) is 550 mm. And 300 g of iron is attached to the bottom of the container 3 as a weight, so that the heat storage material 1
Was created multiple times. A plurality of heat storage material groups 10 were formed by bundling the heat storage materials 1 in a three-by-three manner with a tape-shaped bundling member 2 having a thickness z of 0.04 mm.

The heat storage material groups 10 were loaded in a heat storage tank. That is, as shown in FIG.
A heat storage material 1.1 belonging to a certain heat storage material group 10 is placed in a water tank (heat storage tank) 21 m, 600 mm wide and 550 mm or more in depth.
Are arranged such that the heat storage material 1 belonging to another heat storage material group 10 exists (that is, by the arrangement method shown in FIG. 6). In the dead space between the inner wall of the water tank 21 and the heat storage material group 10 where the heat storage material group 10 cannot be provided, the heat storage materials 1 are appropriately arranged. As a result, a total of 85 heat storage materials 1 were loaded into the water tank 21. When the heat storage material groups 10 were arranged, no overturning or displacement occurred. Therefore, the heat storage material groups 10 could be easily arranged.

The heat storage materials 1.1 belonging to the same heat storage material group 10
The width a of the gap between them is 4 mm, and the width b of the gap between the adjacent heat storage material groups 10 is approximately 8.07 mm. Therefore, the width ratio b / a of the gap is approximately 2.02.

FIG. 20 (a)
As shown in (b), two entrances 21a and 21b are formed substantially diagonally. That is, one entrance 21a
Is formed in the lower part of the water tank 21 and the other entrance 21
b is formed on the upper part of the water tank 21 at a position substantially diagonally viewed from the entrance 21a. Further, a thermometer for measuring the temperature of water (heat transfer medium 22) drained from the entrance 21a is installed at the entrance 21a.

As shown in FIG. 20 (b), 7 ° C. water as a heat transfer medium 22 is placed in a water tank 21 in which the heat storage material groups 10 are loaded so that the water depth becomes 500 mm. Filled. Therefore, the heat storage materials 1 are in a state in which the upper part protrudes upward by 50 mm from the water surface.

Thereafter, 7
° C water at a flow rate of 200 L / hr for 6 hours, thereby exchanging heat between the heat storage materials 1 and the water (cool storage).
Was done. Since the water is drained from the entrance 21b at a flow rate of 200 L / hr, the water depth is maintained at 500 mm.

Thereafter, the water tank 21 is moved from the entrance 21b to
By continuously passing water at 2 ° C. at a flow rate of 200 L / hr, heat exchange (cooling) is performed between the heat storage materials 1 and the water, and the temperature (water temperature) of the water discharged from the entrance 21 a )
Was measured. The time until the water is substantially no longer cooled, that is, the time from the start of the passage of water at 12 ° C. to the time when the water temperature reaches 10 ° C. (hereinafter referred to as the required time) Measured. As a result, the required time is 3
70 minutes.

The above required time indicates a time during which the water can be substantially cooled. Therefore, the longer the required time, the more efficiently water comes into contact with each heat storage material 1.
It can be evaluated that heat exchange between... And water is performed uniformly over the entire water tank 21. That is, it can be evaluated that the longer the required time, the better the heat storage efficiency.

Example 2 A plurality of heat storage materials 1 were obtained by performing the same operation as in Example 1 except that the diameter y of the lids 3b and 3c used in Example 1 was changed from 64 mm to 62 mm. Created. And the thickness z is 0.08 mm
The heat storage materials 1... 9 by the tape-shaped bundling member 2 of
A plurality of heat storage material groups 10 were formed by bundling them so that their cross sections became substantially square.

The heat storage material groups 10... Were loaded into the water tank 21 used in Example 1. That is, in the water tank 21,
Heat storage materials 1.1 belonging to different heat storage material groups 10
The heat storage material groups 10 are arranged so that they face each other (that is, by the arrangement method shown in FIG. 16). Thus, nine heat storage material groups 10, that is, 81 heat storage materials 1 were loaded in the water tank 21.

Heat storage materials 1.1 belonging to the same heat storage material group 10
The width a of the gap between them is 2 mm, and the width b of the gap between the heat storage material groups 10 adjacent to each other is 2.16 mm. Therefore, the ratio b / a of the gap width is 1.08.

The required time was measured by performing the same operation as in Example 1. As a result, the required time is
355 minutes.

[Example 3] By performing the same operation as in Example 1, a plurality of heat storage materials 1 were produced. The heat storage material 1 is made of rubber band (bundling member 2) having a thickness z of 0.9 mm.
.. Were bundled in a bundle in such a manner that the cross-section became substantially rhombic, whereby a plurality of heat storage material groups 10 were formed.

The heat storage material groups 10... Were loaded in the water tank 21 used in Example 1. That is, in the water tank 21,
In order that the heat storage material 1 belonging to another heat storage material group 10 exists between the heat storage materials 1.1 belonging to a certain heat storage material group 10 (that is, by the arrangement method shown in FIG. Material groups 10 were arranged. Thereby, 20 heat storage material groups 10, that is, 80 heat storage materials 1 were loaded in the water tank 21.

Heat storage materials 1.1 belonging to the same heat storage material group 10
The width a of the gap between them is 4 mm, and the width b of the gap between the heat storage material groups 10 adjacent to each other is about 9.59 mm. Therefore, the ratio b / a of the width of the gap is about 2.40.

Then, the same operation as in Example 1 was performed to measure the required time. As a result, the required time is
360 minutes.

[Comparative Example 1] A plurality of heat storage materials 1 were prepared by performing the same operation as in Example 1. Then, the heat storage materials 1 were loaded into the water tank 21 used in Example 1 without bundling. That is, as shown in FIG.
1, heat storage materials 1... Are arranged so as to be closest packed.
As a result, 85 heat storage materials 1 were loaded into the water tank 21. The width of the gap between the heat storage materials 1 is 4 mm. still,
When the heat storage materials 1 are arranged, the heat storage materials 1 are not bundled, and therefore, as shown in FIG. In addition, the heat storage materials 1... Therefore, it took time to arrange the heat storage materials 1 in the water tank 21.

Then, the same operation as in Example 1 was performed to measure the required time. As a result, the required time is
290 minutes.

The required time obtained in Comparative Example 1 is shorter than the required time obtained in Examples 1 to 3 by one hour or more. Therefore, when the heat storage materials 1 are loaded without employing the arrangement method according to the present invention, water cannot efficiently contact each of the heat storage materials 1. It can be evaluated that the heat exchange is not performed uniformly over the entire water tank 21. That is, it can be evaluated that the heat storage efficiency is inferior.

[Comparative Example 2] The thickness z of the tape-shaped bundling member 2 used in Example 2 was changed from 0.08 mm to 0.04 mm.
A plurality of heat storage material groups 10 were formed by performing the same operation as in the example except that the temperature was changed to mm. Then, by performing the same operation as in the second embodiment,
9 heat storage material groups 10..., That is, 81 heat storage materials 1
... was loaded.

Heat storage materials 1.1 belonging to the same heat storage material group 10
The width a of the gap between them is 2 mm, and the width b of the gap between the heat storage material groups 10 adjacent to each other is 2.08 mm. Therefore, the ratio b / a of the width of the gap is 1.04,
The inequality (1) is not satisfied.

The required time was measured by performing the same operation as in Example 1. As a result, the required time is
295 minutes.

The required time obtained in Comparative Example 2 is one hour shorter than the required time obtained in Example 2 above.
Therefore, when the gap width ratio b / a does not satisfy the inequality (1), it is difficult to form a main stream 22b in which water flows in a curved manner, so that the heat storage efficiency is lower than in the second embodiment. It can be evaluated as inferior. However, Comparative Example 2
Is a comparative example with respect to Example 2, and the ratio of the width of the gap b /
This is a comparison between the case where a satisfies the inequality (1) and the case where a is not satisfied, and is not a comparative example for the arrangement method according to the present invention.

[0086]

According to the method for arranging heat storage materials according to the first aspect of the present invention, a plurality of heat storage materials are formed by bundling a plurality of heat storage materials with a bundling member as described above. This is a method of arranging the heat storage material group in a heat storage tank such that a gap is formed between the material groups by the binding member.

In the method for arranging heat storage materials according to the second aspect of the present invention, as described above, a plurality of heat storage material groups each formed by bundling a plurality of cylindrical heat storage materials loaded with a heat storage agent are formed. The main flow in which the heat transfer medium flows in a curved manner in the gap between the heat storage material groups adjacent to each other is formed, while the branch flow in which the heat transfer medium flows in the gap between the heat storage materials belonging to the same heat storage material group is formed. This is a method of disposing the heat storage material group in a heat storage tank so as to be formed.

According to the method of arranging the heat storage material according to the third aspect of the present invention, as described above, a plurality of heat storage material groups formed by bundling a plurality of cylindrical heat storage materials loaded with the heat storage agent are formed. The width of the gap between the heat storage materials belonging to the same heat storage material group is defined as a, and the heat storage material A belonging to a certain heat storage material group and the heat storage material group belonging to the heat storage material group adjacent to the heat storage material group and adjacent to the heat storage material A Assuming that the width of the gap with the heat storage material B to be performed is b, a method of arranging the heat storage material group in the heat storage tank so as to satisfy the inequality (1) b / a ≧ 1.05 (1) is there.

Therefore, the flow of the heat transfer medium in the heat storage tank can be made uniform and smooth, and a so-called water-stop region is unlikely to be generated. Can be. Thereby, the heat exchange between the heat storage material and the heat transfer medium can be performed uniformly over the entire heat storage tank, so that there is an effect that the heat storage efficiency is improved.

According to a fourth aspect of the present invention, as described above, the heat storage material group is placed in the heat storage tank such that the flow direction of the heat transfer medium is in the non-axial direction of the heat storage material. It is a method to arrange.

Thus, the heat transfer medium can be brought into more efficient contact with each heat storage material, so that heat exchange between the heat storage material and the heat transfer medium can be performed more uniformly over the entire heat storage tank. This has the effect.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a state in which a heat transfer medium flows through a gap between a plurality of heat storage material groups arranged by an arrangement method according to an embodiment of the present invention while forming a main stream and a branch stream.

FIG. 2 is a schematic front view showing an example of a heat storage material constituting the heat storage material group.

FIG. 3A is a schematic perspective view showing a main part of a heat storage material group bundled in a bundling manner, and FIG. 3B is a schematic view showing a main part of the heat storage material group bundled in a bundling manner. It is a perspective view of.

FIG. 4A is a schematic plan view illustrating an example of a method of arranging heat storage material groups bundled in a bundling manner, and FIG. 4B is a schematic plan view of a method of arranging heat storage material groups bunched in a bundling manner. It is a schematic plan view showing an example.

FIG. 5 is a schematic plan view showing the width of a gap between heat storage materials formed when heat storage material groups bundled in a bundling manner are arranged.

FIG. 6 is a schematic plan view showing the width of a gap between heat storage materials formed when heat storage material groups bundled in a bundling manner are arranged.

FIG. 7 is a schematic plan view showing a state where a plurality of heat storage material groups bundled in a bundling manner are arranged.

FIG. 8 is a schematic plan view showing a state in which a plurality of heat storage material groups bundled in a bundling manner are arranged.

FIG. 9 is a schematic plan view showing a state where another heat storage material group bundled in a bundling manner is arranged.

FIG. 10 is a schematic plan view showing the width of a gap between heat storage materials formed when heat storage material groups bundled in a bundling manner are arranged.

FIG. 11 is a comparative example and shows the width of the gap between the heat storage materials formed when the heat storage material groups bundled in a binding manner by an arrangement method different from the arrangement method according to the present invention are arranged. It is a schematic plan view.

FIG. 12A is a schematic plan view showing a state in which still another heat storage material group bundled in a bundling manner is arranged;
(B) is a schematic plan view showing a state in which another heat storage material group bundled in a bundling manner is arranged, and (c) is another state in which the heat storage material group in (b) is arranged. It is a schematic plan view shown.

FIG. 13 is a schematic plan view showing a state where still another heat storage material group bundled in a bundling manner is arranged.

FIG. 14 is a schematic plan view showing a state in which still another heat storage material group bundled in a bundling manner is arranged.

FIG. 15 is a schematic plan view showing a state in which still another heat storage material group bundled in a bundling manner is arranged.

FIG. 16 is a schematic plan view showing a state where still another heat storage material group bundled in a bundling manner is arranged.

FIG. 17 is a schematic plan view showing a state in which still another heat storage material group bundled in a bundling manner is arranged.

FIG. 18 is a schematic plan view showing a state in which still another heat storage material group bundled in a manner of bundling using a spacer is arranged.

FIG. 19 is a schematic perspective view showing another example of the heat storage material constituting the heat storage material group.

FIG. 20A is a schematic plan view of a water tank used in Examples and Comparative Examples, and FIG. 20B is a schematic cross-sectional view of the water tank.

FIG. 21 is a schematic plan view showing a state where a heat storage material is arranged in the water tank by a conventional arrangement method.

FIG. 22 is a schematic front view showing a state where the heat storage material shifts when the heat storage material is arranged by the conventional arrangement method.

[Explanation of symbols]

 Reference Signs List 1 heat storage material 2 bundling member 3 container 3a container main body 3b upper lid 3c lower lid 10 heat storage material group 21 water tank (heat storage tank) 22 heat transfer medium 22a tributary stream 22b main stream a · b width

Claims (4)

[Claims] The heat storage material group is formed by bundling a plurality of heat storage materials by a bundling member to form a plurality of heat storage material groups, and forming a gap between the adjacent heat storage material groups by the bundling member. Is disposed in a heat storage tank. 2. A plurality of heat storage material groups each formed by bundling a plurality of cylindrical heat storage materials loaded with a heat storage agent, and a heat transfer medium is curved in a gap between adjacent heat storage material groups. Arranging the heat storage material group in the heat storage tank such that a flowing main stream is formed, while a tributary in which the heat transfer medium flows in a curved manner is formed in a gap between the heat storage materials belonging to the same heat storage material group. A method for arranging a heat storage material, characterized in that 3. A plurality of heat storage material groups each formed by bundling a plurality of cylindrical heat storage materials loaded with a heat storage agent, and a width of a gap between the heat storage materials belonging to the same heat storage material group is defined as a. When the width of the gap between the heat storage material A belonging to a certain heat storage material group and the heat storage material B belonging to the heat storage material group adjacent to the heat storage material group and adjacent to the heat storage material A is represented by inequality (1) B / a ≧ 1.05 (1) A method for arranging the heat storage material, wherein the heat storage material group is arranged in a heat storage tank so as to satisfy the following condition. 4. The heat storage material according to claim 1, wherein the heat storage material group is arranged in the heat storage tank such that the flow direction of the heat transfer medium is in the non-axial direction of the heat storage material. Placement method.