| 摘要 |
PURPOSE:To prevent destruction caused by the volume expansion or thermal impact of heat storage material by a method wherein the heat storage material is sealed in a baggy heat storage container and a plate of porous material which has elasticity in the vertical direction to its plane and is not subjected to buckling in the parallel direction to the plane at least under no load condition is immersed in the heat storage material. CONSTITUTION:A heat storage element 10 is constituted in such a manner that heat storage material 3 (for example, polyethyleneglycol, etc.) is put into the inside of a baggy flexible container 1 (for example, made of nylon, vinyl, etc.) and a porous material 2 (made of glass fiber non-woven cloth, etc.) is immersed in the material 3. The material 2 is hardly subjected to buckling when a load is applied in the parallel direction (Y-Y' direction) to its plane and has uniform elasticity when a force is applied in the vertical direction (X-X' direction) to the plane. When polyvinyl alcohol is used as the binder material, the impregnating ability of this glass fiber non-woven cloth is made remarkably larger. The destruction of the heat storage container caused by the stress generated by the volume expansion or thermal impact of the heat storage material is avoided by the elasticity of the porous material. |
