| 摘要 |
PURPOSE:To improve heat dissipating speed by increasing heat conductivity and improve the utilizing efficiency of a heat accumulating material by a method wherein a composite heat accumulating material, in which a heat accumulating material is mixed with porous substance, is employed. CONSTITUTION:In the capsule type heat accumulator, the composite heat accumulating material 11, in which the porous substance 12 is mixed, is sealed in a capsule 14. The porous substance 12 having a large porosity such as 98%, for example, is employed. An apparent heat conductivity is increased by mixing the porous substance, therefore, a high heat transfer speed may be obtained even in the capsule having a large diameter. The layer of composite heat accumulating material 11a, mixed with the porous material having larger diameter, is provided near a heat transfer surface 14a. The layer of the composite heat accumulating material 11b, mixed with the porous substance having smaller diameter, is provided at the inner side of the heat transfer surface 14a. Further, the composite heat accumulating material 11c, mixed with the porous substance having far smaller diameter, is provided at the inner side of the layer 11b and the composite heat accumulating material 11 is constituted by laminating a plurality of layers in such order. |
