JPH06294593A - Heat exchanger - Google Patents

Abstract

PURPOSE:To hasten startup of a heat exchanger by providing a clearance between a heat accumulating body and a housing. CONSTITUTION:In a heat accumulating body 15, since an organic system accumulating material which reversibly phase-transfers between solid and liquid is supported by resin, heat is not lost. As the result, a wall for partitioning the heat accumulating body 15 from a heating medium is not required in a passage 18 of the heating medium, so that heat exchanging velocity is increased. Even if the volume of the heat accumulating body 15 is expanded as the temperature of the heat accumulating body 15 is raisesd by heat exchanging, the passage 18 of the heating medium is not blocked because there is the clearance between the heat accumulating body 15 and a housing 10, thereby heat exchanging is performed while holding the contact area of the heating medium and the heat accumulating body 15. Moreover, in the radiation of heat, the heat accumulating body 15 is contracted so as to make use of a clearance 24 as a passage of the heating medium, and the contact area of the heating medium and the heat accumulating body 15 is increased, thereby the efficiency of heat exchanging is further improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger having a heat exchange element composed of a heat storage body utilizing latent heat associated with a phase transition.

[0002]

2. Description of the Related Art A heat storage material capable of storing a large amount of heat is used in a heating device of an automobile.
It is disclosed in Japanese Patent No. 4516. An outline of this device is shown in FIG. 6. An engine (3), a heat exchanger (1) for storing exhaust heat from the engine (3) with a heat storage material, and the heat of the heat exchanger (1) is blown into the vehicle. The air blower (6) and the heat medium pipe (2) connecting them. FIG. 7 shows the structure inside the heat exchanger (1). The exhaust heat of the running engine is stored in the heat storage body (8) inside the heat exchanger (1), and the stored heat is used to store the heat inside the vehicle. The purpose is to shorten the idling time when rapid heating and restarting the engine (3). As shown in FIG. 8, the heat storage body (8) is composed of a heat storage material (13) capable of storing a large amount of heat and a container (14). That is, the heat storage body (8) is a heat storage material (1
It utilizes the latent heat associated with the phase transition between the solid phase and the liquid phase in 3), and the heat storage material (13) is a container made of resin or the like to prevent the liquid from flowing out when it becomes liquid due to the phase transition ( 14). The container (14) of the heat storage body (8) is fixed to the housing (10) of the heat exchanger (1) by a fixing plate (9), and a heat medium which is an exhaust heat medium of the engine (3) is introduced into the inlet (1).
Heat is exchanged between the heat medium and the heat storage material (13) of the heat storage body (8) while entering from 1) and exiting from the outlet (12).

However, in the heat exchanger (1) provided with the above-mentioned heat storage body (8), the heat medium and the heat storage material (13) perform heat exchange by separating the container (14) having heat transfer resistance from each other. There is a drawback that the heat exchange rises slowly.

Therefore, if a heat accumulating body is made of a resin carrying an organic heat accumulating material, and a through hole is provided in which the heat medium directly contacts the heat accumulating body, and the heat accumulating body is housed in a housing to perform heat exchange, the temperature is changed. Due to the volume expansion of the heat storage body due to the rise, the through hole is blocked by the reaction received from the housing, and the heat exchange efficiency is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a heat exchanger having a rapid heat exchange start-up.

[0006]

The heat exchanger of the present invention comprises an ethylene-α-olefin copolymer A and an ethylene-α-olefin copolymer A.
A heat storage body (15) having an organic heat storage material, which is carried on the α-olefin copolymer A and undergoes a reversible phase transition between solid and liquid, as a constituent material, and a heat medium which is in direct contact with the heat storage body (15). A heat exchanger comprising a heat exchange element (17) having a flow path (18) and a housing (10) accommodating the heat exchange element (17), the heat storage body (15) and the housing (10). ) Are provided with a gap (24).

[0007]

In the heat storage body (15) of the present invention, since an organic heat storage material that undergoes a reversible phase transition between solid and liquid is carried on the resin, there is no flow-out, and as a result, the heat medium flow path (18) is provided. Heat storage (1
5) The wall that separates the heat medium from the heat medium is no longer necessary,
Since it is in direct contact with 5), the heat exchange rate is increased. Even if the heat storage body (15) expands in volume as the temperature of the heat storage body (15) rises due to heat exchange, since there is a gap (24) between the heat storage body (15) and the housing (10), the housing ( Heat storage body (15) without receiving reaction from 10)
The heat exchange is performed by keeping the contact area between the heat medium and the heat storage body (15) without closing the flow path (18) of the heat medium provided in the. In addition, when the heat storage body (15) contracts during heat dissipation and the gap (24) is used as a flow path for the heat medium, the contact area between the heat medium and the heat storage body (15) increases, and the efficiency of heat exchange increases. Further improve.

The present invention will be described below with reference to the drawings showing examples. FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention as seen through.

As shown in FIG. 1, the heat exchanger (23) contains a heat exchange element (17) in a cylindrical housing (10).
At the front and rear end faces of the housing (10), a heat medium inlet (1
1) and an outlet (12) are provided. The heat storage body (15) of the heat exchange element (17) is shaped like a cylinder, and a circular end surface of the heat storage element (15) is formed with a flow path (18) communicating between both end surfaces. . A gap (24) is formed between the cylindrical side surface of the heat storage body (15) and the housing (10).

The heat storage body (15) used in the present invention
Is composed of an ethylene-α-olefin copolymer A and an organic heat storage material supported by the ethylene-α-olefin copolymer A.

The above ethylene-α-olefin copolymer A
For example, a copolymer of ethylene and α-olefin containing about several mol% of α-olefin is used. Examples of the α-olefin include propylene,
Butene-1, pentene, hexene-1, 4-methylpentene-1, octene-1, etc. are mentioned. The ethylene-α-olefin copolymer A has, for example, a density of 0.
When a resin of less than 925 g / cm ³ is used as a carrier for the organic heat storage material, the elution of the organic heat storage material from the heat storage body (15) is prevented. Density is more preferably 0.910 g / cm ³ or less in terms of dissolution of the ethylene -α- olefin copolymer A, is optimal in particular 0.890 g / cm ³ or less.

The heat storage body (15) is made of ethylene-based resin as a resin in order to improve the strength of the heat storage body (15).
Along with α-olefin copolymer A, medium density polyethylene, high density polyethylene, and ethylene-α having a density higher than the above ethylene-α-olefin copolymer A.
-Using at least one ethylene polymer of the olefin copolymer B, the shape retention of the heat storage material (15) can be enhanced. In particular, when the density of the ethylene-α-olefin copolymer A is 0.900 g / cm ³ or less, the shape cannot be maintained at high temperature, so that the ethylene-α-olefin copolymer has strength and shape retention. The addition of B is effective. The ethylene-α-olefin copolymer B has a density higher than that of the ethylene-α-olefin copolymer A, specifically, 0.910 g / cm ³
The above is preferable, and 0.930 g / cm ³ or more is particularly preferable. The medium-density polyethylene and the high-density polyethylene are defined by JIS-K-6760, and the medium-density polyethylene and the high-density polyethylene have a heat storage body (1
It is effective for improving the strength of 5).

The above-mentioned organic heat storage material is a substance having a property of reversibly undergoing phase transition between solid and liquid, and this organic heat storage material has a lower melting point than ethylene-α-olefin copolymer A, Those having compatibility with the α-olefin copolymer A are desirable, and when medium density polyethylene and high density polyethylene are used, those having compatibility with medium density polyethylene and high density polyethylene are also desirable. The organic heat storage material is not particularly limited,
Specific examples thereof include hydrocarbons such as paraffin, paraffin wax, isoparaffin, and polyethylene wax, fatty acids, and fatty acid esters (hereinafter referred to as fatty acids). These may use only 1 type and may use 2 or more types together. When the heat medium, which is a medium for heat exchange, contains water, hydrocarbons are preferable because they deteriorate fatty acids. The organic heat storage material is 20 cal / g from the viewpoint of maintaining heat storage efficiency.
A crystalline substance having the above heat of fusion is desirable.

When the heat storage material (15) is composed of the ethylene-α-olefin copolymer A and the ethylene polymer for improving the strength, the total amount of the resin containing the ethylene polymer and the organic heat storage material are blended. The ratio is, for example, 10 to 70% by weight for resin and 30 to 90 for organic heat storage material.
Weight percent is suitable. If the ratio of the resin is less than the above range, the organic heat storage material may be eluted into the heat medium flow path (18). If the ratio of the organic heat storage material is less than the above range, the heat storage amount decreases and the heat exchange amount Leads to a decrease. Furthermore, ethylene-α-olefin copolymer A, the above ethylene polymer,
The mixing ratio of the organic heat storage material is, for example, ethylene-α.
-Olefin copolymer A is 5 to 60% by weight, the ethylene polymer is 0 to 65% by weight, and the organic heat storage material is 30 to 9%.
0% by weight, but 10 to 70% by weight is suitable for the total amount of resin. If the ratio of the ethylene-α-olefin copolymer A is less than the above range, the organic heat storage material may be eluted into the flow path (18) of the heat medium, and the ratio of the ethylene-α-olefin copolymer A is above. If it exceeds the range, the heat storage amount tends to decrease.

The above ethylene-α-olefin copolymer A
In order to support the organic heat storage material on, for example, a temperature of the melting point of the ethylene-α-olefin copolymer A or higher, or when polyethylene is used, polyethylene, the polyethylene-α-olefin copolymer A It can be realized by kneading with a kneader or the like at a temperature equal to or higher than the melting point and molding the molten mixture. The heat storage body (15) can be manufactured by a usual plastic molding method such as extrusion molding or injection molding. In addition to the resin and the organic heat storage material, various inorganic fillers, flame retardants, antioxidants and the like may be added to and dispersed in the heat storage body (15), if necessary.

In the present invention, the heat exchange element (17) is composed of a cylindrical heat storage body (15) and a heat medium passage (18) communicating between both end faces of the heat storage body (15). There is. A heat medium and a heat storage body (1
5) Direct contact with heat exchange speed. The heat medium flow path (18) can be formed by a single-step molding of the heat storage body (15) having the heat medium flow path (18), or the block-shaped heat storage body (15) can be turned by a lathe. It may be formed by post-processing such as a drilling machine.

The heat storage body (15) and the housing (10)
The gap (24) provided between the heat storage bodies (15) absorbs the volume expansion of the heat storage body (15) when the heat storage body (15) expands in volume due to a temperature rise due to heat exchange. Heat medium flow path (18) provided in heat storage body (15) by volume expansion
The heat exchange is performed by holding the contact area between the heat medium and the heat storage body (15) without being blocked by the reaction given to the housing (10) due to the expansion. Further, since the volume of the heat storage body (15) contracts during heat dissipation, the gap (24) may be used as a flow path for the heat medium. When this gap (24) is used as the flow path (18) for the heat medium, the heat medium and the heat storage body (15)
The contact area can be increased and the efficiency of heat exchange can be improved. It is preferable that the gap (24) has a volume equal to or larger than the volume expansion of the heat storage body (15) at the highest temperature used.
The gap (24) does not mean only the space, but is not limited as long as it absorbs the expansion of the heat storage body (15). Therefore, the gap (24) may be a layer filled with a compressible polynomial material such as soft foam urethane or glass fiber, or the heat storage body (15) may be fixed to the housing (10) with fins. The space by

Examples of the heat medium include water, ethylene glycol, propylene glycol, various liquids such as aqueous solutions thereof, and various gases such as air.

[0019]

[Examples] Examples and comparative examples in which the change of the flow path (18) of the present invention was confirmed by measuring the amount of heat exchange will be described below. The characteristics of the resins used in Examples and Comparative Examples are shown in Table 1, the characteristics of the organic heat storage material are shown in Table 2, and the composition is shown in Table 3.

Example 1 As an ethylene-α-olefin copolymer A having a density of 0.925 g / cm ³ or less, Tufmer P0680 (manufactured by Mitsui Petrochemical Co., Ltd.) having a density of 0.87 g / cm ³ and high density polyethylene , S6 with a density of 0.957 g / cm ³
006M (manufactured by Showa Denko KK), HNP-9 which is a crystalline alkyl hydrocarbon as an organic heat storage material.
(Manufactured by Nippon Seiro Co., Ltd.) was used. The density is JIS
-Measured based on K-6760.

20 parts by weight of Toughmer P0680 (hereinafter referred to as "part"), 10 parts of S6006M, and 7 parts of HNP-9.
It was compounded at a ratio of 0 part to obtain a molding material. This molding material is supplied to a twin-screw kneading extruder, and the kneaded melt is cooled while being heated to 150 ° C. to have a diameter of 100 mm and a length of 150 m.
A columnar heat storage body (15) shown in FIG. 1 and FIG.

The heat accumulator (15) obtained above was provided with 91 through holes each having a radius of 6 mm as a flow path (18) for a heat medium to obtain a heat exchange element (17). This heat exchange element (17) was placed in an aluminum cylindrical housing (10) having an inner diameter of 105 mm and a length of 200 mm, and a gap (24) between the side surface of the cylindrical heat storage body (15) and the housing (10). As a soft foam urethane layer was provided. This cylindrical housing (10) is configured by providing a heat medium inlet (11) and an outlet (12) on the front and rear end faces of a heat exchange element (17). On the outside of the housing (10), glass wool (19) is wound by 10 mm as a heat insulating material. This was made into the heat exchanger (23).

Example 2 As an ethylene-α-olefin copolymer A having a density of 0.925 g / cm ³ or less, E having a density of 0.89 g / cm ³
UL130 (Sumitomo Chemical Co., Ltd.), HNP which is a crystalline alkyl hydrocarbon as an organic heat storage material
-9 was used.

A molding material was prepared by mixing 30 parts of EUL130 and 70 parts of HNP-9. This molding material is supplied to a twin-screw kneading extruder, and the kneaded melt is cooled while being heated to 150 ° C. to have a diameter of 100 mm and a length of 150.
A columnar heat storage body (15) having a size of mm was obtained.

This heat storage body (15) was processed in the same manner as in Example 1 to obtain a heat exchange element (17), and this heat exchange element (1)
7) is placed in a cylindrical housing (10) similar to that of the first embodiment, the heat storage body (15) is fixed to the housing (10) with fins, and a gap between the heat storage body (15) and the housing (10) is obtained. A void was provided as (24). On the outside of the housing (10), glass wool (1
9) is wound 10 mm. The heat exchanger (2
3).

Comparative Example 1 An ethylene-α-olefin copolymer having a density of 0.9
F15 (manufactured by Tosoh Corporation) of 25 g / cm ³ and HNP-9, which is a crystalline alkyl hydrocarbon, was used as an organic heat storage material.

A molding material was prepared by mixing 30 parts of F15 and 70 parts of HNP-9. This molding material was supplied to a twin-screw kneading extruder, and the kneaded melt was cooled while being heated to 150 ° C. to obtain a columnar heat storage body (15) having a diameter of 100 mm and a length of 150 mm.

This heat storage body (15) was processed in the same manner as in Example 1 to obtain a heat exchange element (17). This heat exchange element (1
7) was placed in an aluminum cylindrical housing (10) having an inner diameter of 100 mm and a length of 200 mm. This cylindrical housing (10) is the same as the first embodiment except that the side surface of the cylindrical heat storage body (15) is in direct contact with the housing (10).
An inlet (11) and an outlet (12) for the heat medium were provided on the outside, and glass wool (19) was wound 10 mm on the outside as a heat insulating material. This was used as a heat exchanger.

Comparative Example 2 Toughmer P0680 as an ethylene-α-olefin copolymer A having a density of 0.925 g / cm ³ or less, S6006M as a high-density polyethylene, and an organic heat storage material,
HNP-9, which is a crystalline alkyl hydrocarbon, was used.

20 parts of Toughmer P0680, S60
A molding material was prepared by mixing 10 parts of 06M and 70 parts of HNP-9. This molding material was supplied to a twin-screw kneading extruder, and the kneaded melt was cooled while being heated to 150 ° C. to obtain a columnar heat storage body (15) having a diameter of 100 mm and a length of 150 mm.

This heat storage body (15) was processed in the same manner as in Example 1 to obtain a heat exchange element (17). This heat exchange element (1
7) was put into the same cylindrical housing (10) as in Comparative Example 1. This was used as a heat exchanger.

Comparative Example 3 As shown in FIG. 3, HNP-9 as a heat storage material (20) was filled in a polypropylene container (21) having a thickness of 1 mm,
It was used as a heat exchange element. The polypropylene container (2
1) is 10 mm x 95 mm x 150 mm, 10 m each
Two m x 85 mm x 150 mm, 10 mm x 70 mm
2 x 150mm, 10mm x 40mm x 150mm
Two of them were prepared and fixed to a cylindrical housing (10) with an indicator plate. The space (22) between the cylindrical housings (10) was used as the flow path for the heat medium. This housing (10)
The outside of the is 10m of glass wool (19) as a heat insulating material.
It has been wound m. This was used as a heat exchanger.

Comparative Example 4 As shown in FIG. 4, barium hydroxide (Ba (OH) ₂ .8H ₂ O) was filled as a heat storage material (20) into a polypropylene container (21) having a thickness of 1 mm to form a flat heat storage material. The body was made. The polypropylene container (21) is 10 mm
1 x 95 mm x 150 mm, 10 mm x 85 mm x
Two pieces of 150 mm were prepared and two pieces of 10 mm × 65 mm × 150 mm were prepared and fixed to a cylindrical housing (10) with an indicator plate. The space (22) between the cylindrical housings (10) was used as the flow path for the heat medium. This housing (10)
On the outside of the table, 10 glass wool (19) is used as a heat insulating material.
It is wound by mm. This was used as a heat exchanger.

The obtained Examples 1 and 2 and Comparative Example 2,
The amount of heat released was measured when water was used as the heat medium in the heat exchangers (23) of Nos. 3 and 4. 5 liter / m of water at 90 ° C in the heat exchanger
After flowing at a rate of in for 2 hours, water at 20 ° C. was caused to flow at a rate of 5 liter / min to take out heat. The heat radiation amount was calculated by the following formula. Heat dissipation amount = (temperature of heat medium at outlet−temperature of heat medium at inlet) × flow rate of heat medium As shown in FIG. 5, in the example, the rising speed of heat exchange was high.

The elution of the heat storage material (15) was confirmed. The dissolution rates of the obtained Examples 1 and 2 and Comparative Examples 1 and 2 were determined under the following conditions. A heat medium at 90 ° C. was stored in the heat exchanger at a rate of 5 liter / min for 2 hours. Next, a heating medium at 20 ° C. is caused to flow at a rate of 5 liters / min for 30 minutes,
A cold heat cycle for radiating heat for 50 minutes was performed. Water, ethylene glycol, and propylene glycol were used as the heat medium. After the test, the heat exchange element (17) was taken out, the heat medium was removed, and the elution rate was calculated from the reduced weight of the heat exchange element (17). Elution rate (%) = (weight reduction amount of heat exchange element / weight of initial heat exchange element) × 100 As shown in Table 4, only Comparative Example 1 was eluted.

[0036]

[Table 1]

[0037]

[Table 2]

[0038]

[Table 3]

[0039]

[Table 4]

[0040]

According to the present invention, the heat storage medium (15) and the heat storage medium (15) are not required to have a wall for partitioning the heat storage medium (15) in the flow path (18) of the heat medium, and the heat medium and the heat storage body (15) are in direct contact, and Even if the heat storage body (15) expands in volume due to a rise in temperature, the heat medium and the heat storage body (1
Since the flow path (18) provided in 5) is not closed, the flow rate of the heat medium does not decrease, so that a heat exchanger having a fast heat exchange start-up can be obtained. For example, it is useful for a heat exchanger that stores heat using the exhaust heat from the engine.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention seen through.

FIG. 2 is a sectional view of a heat exchanger according to an embodiment of the present invention.

FIG. 3 is a sectional view of a conventional heat exchanger.

FIG. 4 is a cross-sectional view of a conventional heat exchanger.

FIG. 5 shows the measurement results of the heat radiation amount of the heat exchange elements according to the example and the comparative example of the present invention.

FIG. 6 is a block diagram showing an entire conventional vehicle heating system.

FIG. 7 is an explanatory diagram of a conventional heat storage device.

FIG. 8 is an explanatory diagram of a conventional heat storage body.

[Explanation of symbols]

 10 Housing 11 Inlet 12 Outlet 15 Heat Storage Element 17 Heat Exchange Element 18 Flow Path 19 Glass Wool 20 Heat Storage Material 21 Container 22 Space 23 Heat Exchanger 24 Gap

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 8, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

The present invention will be described below with reference to the drawings showing examples. FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention as seen through. The shape of the heat exchanger
The shape is not limited to this .

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

The heat storage body (15) is made of ethylene-based resin as a resin in order to improve the strength of the heat storage body (15).
Along with α-olefin copolymer A, medium density polyethylene, high density polyethylene, and ethylene-α having a density higher than the above ethylene-α-olefin copolymer A.
-Using at least one ethylene polymer of the olefin copolymer B, the shape retention of the heat storage material (15) can be enhanced. In particular, when the density of the ethylene-α-olefin copolymer A is 0.900 g / cm ³ or less, the shape cannot be maintained at high temperature, so that the ethylene-α-olefin copolymer has strength and shape retention. The addition of B is effective. The ethylene-α-olefin copolymer B has a density higher than that of the ethylene-α-olefin copolymer A, specifically, 0.910 g / cm ³
The above is preferable, and 0.930 g / cm ³ or more is particularly preferable. The medium-density polyethylene and the high-density polyethylene are specified by JIS-K-6760, and in the low-density polyethylene of the high pressure method,
The strength of the heat storage body (15) cannot be improved .

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

The above-mentioned organic heat storage material is a substance having a property of reversibly undergoing phase transition between solid and liquid, and it is desirable that the material has compatibility with the ethylene-α-olefin copolymer A,
When medium density polyethylene and high density polyethylene are used, those having compatibility with medium density polyethylene and high density polyethylene are desirable. This organic heat storage material
Is an ethylene-α-olefin copolymer A as a resin
Ethylene-α-olefin copolymerization when only used
When using a plurality of resins having a melting point lower than that of body A
Is ethylene-α-olefin copolymer A, ethylene-
α-olefin copolymer B, medium density polyethylene, and
Lower melting point than at least one of high density polyethylene
Is desirable . The organic heat storage material is not particularly limited, but specific examples thereof include hydrocarbons such as paraffin, paraffin wax, isoparaffin, and polyethylene wax, fatty acids, and fatty acid esters (hereinafter referred to as fatty acids). . These may use only 1 type and may use 2 or more types together. In addition,
When the heat medium that is a medium for exchanging heat contains water, hydrocarbons are preferable because they deteriorate fatty acids. The organic heat storage material is preferably a crystalline substance having a heat of fusion of 20 cal / g or more from the viewpoint of maintaining heat storage efficiency.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

The heat storage body (15) and the housing (10)
The gap (24) provided between the heat storage bodies (15) absorbs the volume expansion of the heat storage body (15) when the heat storage body (15) expands in volume due to a temperature rise due to heat exchange. Heat medium flow path (18) provided in heat storage body (15) by volume expansion
The heat exchange is performed by holding the contact area between the heat medium and the heat storage body (15) without being blocked by the reaction given to the housing (10) due to the expansion. Further, since the volume of the heat storage body (15) contracts during heat dissipation, the gap (24) may be used as a flow path for the heat medium. When this gap (24) is used as the flow path (18) for the heat medium, the heat medium and the heat storage body (15)
The contact area can be increased and the efficiency of heat exchange can be improved. It is preferable that the gap (24) has a volume equal to or larger than the volume expansion of the heat storage body (15) at the highest temperature used.
The gap (24) does not mean only the space, but is not limited as long as it absorbs the expansion of the heat storage body (15). Therefore, the gap (24) may be a layer filled with a compressive porous material such as soft foam urethane or glass fiber, or the heat storage body (15) may be fixed to the housing (10) with fins. The space by

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

Comparative Example 3 As shown in FIG. 3, HNP-9 as a heat storage material (20) was filled in a polypropylene container (21) having a thickness of 1 mm,
It was used as a heat exchange element. The polypropylene container (2
1) is 10 mm x 95 mm x 150 mm, 10 m each
Two m x 85 mm x 150 mm, 10 mm x 70 mm
2 x 150mm, 10mm x 40mm x 150mm
2 were prepared and fixed to a cylindrical housing (10) with a support plate. The space (22) between the cylindrical housings (10) was used as the flow path for the heat medium. This housing (10)
The outside of the is 10m of glass wool (19) as a heat insulating material.
It has been wound m. This was used as a heat exchanger.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

Comparative Example 4 As shown in FIG. 4, barium hydroxide (Ba (OH) ₂ .8H ₂ O) was filled as a heat storage material (20) into a polypropylene container (21) having a thickness of 1 mm to form a flat heat storage material. The body was made. The polypropylene container (21) is 10 mm
1 x 95 mm x 150 mm, 10 mm x 85 mm x
Two pieces of 150 mm were prepared and two pieces of 10 mm × 65 mm × 150 mm were prepared and fixed to a cylindrical housing (10) with a support plate. The space (22) between the cylindrical housings (10) was used as the flow path for the heat medium. This housing (10)
On the outside of the table, 10 glass wool (19) is used as a heat insulating material.
It is wound by mm. This was used as a heat exchanger.

Claims (4)

[Claims] 1. An ethylene-α-olefin copolymer A
And a heat storage material (15) having an organic heat storage material, which is supported on the ethylene-α-olefin copolymer A and undergoes a reversible phase transition between solid and liquid, as a constituent material, and this heat storage material (15) A heat exchange element (1) including a heat medium flow path (18) in direct contact
7) and a housing (10) for accommodating the heat exchange element (17), the heat storage body (1)
A heat exchanger characterized in that a gap (24) is provided between 5) and the housing (10). 2. The heat exchanger according to claim 1, wherein the ethylene-α-olefin copolymer has a density of less than 0.925 g / cm ³ . 3. The heat storage body (15) further comprises medium density polyethylene, high density polyethylene, and ethylene.
The heat exchanger according to claim 1 or 2, wherein at least one ethylene polymer among ethylene-α-olefin copolymers B having a density higher than that of α-olefin copolymer A is used as a constituent material. 4. The heat exchanger according to claim 1, wherein the organic heat storage material is at least one selected from crystalline alkyl hydrocarbons, crystalline fatty acids, and crystalline fatty acid esters. .