JPS61235485A - Heat storing material - Google Patents

Abstract

PURPOSE:To obtain a heat storing material which is excellent in corrosion resistance, heat transfer efficiency, etc., and suitable for use as a component of a heat storing wall, etc., used in a building, by coating a latent heat storing agent with an organic coating into a small granule to obtain a heat storing granule and scattering the heat storing granule in a matrix such as concrete. CONSTITUTION:A latent heat storing agent 4 such as paraffin or calcium chloride hexahydrate is coated with an org. coating 5 (e.g.: gelatin coating or cellulose coating) to microencapsulate it, thereby obtaining a heat storing granule 3. The heat storing granule 3 is mixed with cement, etc., followed by addition of water. The mixture is set into a block, etc., in a molding tool to obtain a heat storing material 1 in which a number of heat storing granules 3 are scattered in a matrix 2 such as concrete. Since in the present heat storing material the heat storing agent 4 which is a heat storing element of the heat storing material 1 is coated with an org. coating 5 to have a small granular shape, there is caused neither supercooling nor phase separation, which contributes to efficient utilization of natural energy.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat storage body used as a component of heat storage walls, heat storage floors, heat storage roofs, etc. of buildings that utilize natural energy such as solar heat.

(Prior Art) Various studies and developments have been made on energy saving measures that utilize natural energy, and in the building-related field, one example is the so-called pansive solar house that utilizes solar heat.

The walls, floor, roof, etc. of a solar house are made of heat storage materials such as heat storage bricks and heat storage blocks.

The heat storage body includes a sensible heat type that uses sensible heat and a latent heat type that uses latent heat. The latent heat type is superior to the sensible heat type in terms of thermal efficiency.
As for the conventional one of this kind.

For example, a latent heat storage agent is filled in a sealed heat storage container such as an acrylic pipe or a copper vibrator, and a heat exchange medium such as water flows around the container, and heat is supplied through this heat exchange medium. There are things that have been done.

(Problems to be Solved by the Invention) However, in such a heat storage body, 1) it is easily corroded, 2) the heat transfer efficiency is poor, and 2) the phenomenon of supercooling of the heat storage agent occurs. There are problems such as phase separation of the heat storage agent, and it has been desired to solve these problems. Various countermeasures have been taken, such as selection of a thickening agent (gelling agent), but even these measures have not fundamentally solved the above problem.

(Means for Solving the Problems) The heat storage body according to the present invention includes a large number of heat storage granules scattered within a base material such as concrete, and the heat storage granules are coated with a latent heat storage agent with an organic film. It is formed into fine particles.

(Function) By forming the heat storage agent, which is the heat storage element of the heat storage body, into fine particles coated with an organic film, corrosion resistance and heat transfer efficiency are improved, and supercooling and phase separation phenomena are eliminated.

(Example) Hereinafter, nine embodiments of the present invention will be described based on the drawings.

A heat storage body according to the present invention is shown in FIG.
It has a block shape in which a large number of heat storage particles 3 are scattered inside.

As the base material 2, concrete, phenol resin, etc. are used.

As shown in FIG. 2, the heat storage granules 3 are of a latent heat type in which a latent heat type heat storage agent 4 is coated with an organic film 5 and formed into minute particles.

The latent heat storage material 4 may be paraffin, for example.

Calcium chloride hexahydrate (CaCj!□・6HzO), etc. are used.

As the material for the organic film 5, resins such as acrylate and polypropylene, gelatin, cellulose, etc. are used, and compatibility with the latent heat storage agent 4 is taken into consideration.
For example, when the base material 2 is concrete, a material with excellent alkali resistance is used, and when the base material 2 is phenol resin, a material with excellent acid resistance is used.

Further, the heat storage granules 3 are obtained by coating a latent heat type heat storage agent 4 with an organic film 5 using a conventionally known technique.

It is obtained by microencapsulation, and the particle size is set to about 50μ to 2fi.

Thus, the heat storage body 1 is produced after mixing, for example, cement, which is the material of the base material 2, and heat storage granules 3.

By adding water and solidifying it in a predetermined mold, it is formed into a block shape and used as a component for heat storage walls, heat storage floors, heat storage roofs, etc.

(Effects of the Invention) As detailed above, according to the present invention, since the heat storage agent, which is the heat storage element of the heat storage body, is covered with an organic film,
Corrosion resistance and heat transfer efficiency are improved, and since the particles are fine, supercooling and phase separation phenomena do not occur. Therefore, natural energy can be used extremely efficiently and savings can be achieved. It is effective in terms of energy saving.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing a heat storage body, and FIG. 2 is a sectional view showing the structure of heat storage granules of the heat storage body. 2... Base material 3... Heat storage granule material 4... Latent heat type heat storage material 5... Organic coating Figure 1

Claims (1)

[Claims] 1) A heat storage body comprising a large number of heat storage granules scattered within a base material such as concrete, and the heat storage granules being formed into minute particles by being coated with a latent heat type heat storage agent with an organic coating. .