| 摘要 |
PURPOSE:To provide a heat accumulator with an excellent thermal efficiency which accumulates the solar heat or various waste heat for use in low temperature heating such as domestic heating by forming a latent heat accumulating layer between a primary heat accumulating layer such as a grain heat accumulating layer and soil. CONSTITUTION:A heat accumulator A is buried in the soil 2 under the floor 1 of a room B which is the part being heated. A latent heat accumulating layer 4 is formed by piling up plural sheets of plate-like latent heat accumulating bodies 7, and for the thermal medium, one or above two kinds among grease, wax, hydrocarbon, higher alcohol, polyhydric alcohol, higher fatty acid or crystal material having the melting point of 5-40 deg.C will be suitable. A primary heat accumulating layer 3 is formed by filling or piling one or above two kinds among water, sand, gravel, crushed stone, concrete pieces and ore. In this manner, the heat of the soil 2 is transferred to the latent heat accumulating layer 4 through a heat transfer layer 5 to be accumulated in the primary heat accumulating layer 3, and so the room B can be heated at a constant temperature over a long period of time. |
