| 摘要 |
PURPOSE:To uniformly distribute cavities over the length of the heat transmission pipe having heat storage martial may develop as the storage material solidifies at the time of no sunshine by so arranging that the concavity of the heat transmission pipe is aligned with the projection of the storage material container, and the projection of the heat transmission pipe with the recess of the storage material container. CONSTITUTION:When there is sunshine, the solar light collected by a reflector 2 enters from the outer surface 24 of the storage material container 22, and part of it is stored in the storage material 23 to cause the storage material to turn from the solid to liquid state with the remainder transmitted from the inner surface 25 of the transmission pipe 21 to the operating fluid. At the time of no sunshine, the heat stored in the storage material 23 is transferred to the operating fluid, and so, the storage material 23 changes from its liquid state to the solid state. In this occasion, the storage material 23 existing in the space between the projection 32 of the heat transmission pipe and the projection 34 of the storage material container gets solidified first because of its smaller thermal capacity. Therefore, the lengthwise movement of the melted storage material can be prohibited which exists in the space between the recess 31 of the heat transmission pipe and the projection 33 of the storage material container. Accordingly, the unavoidable cavities at the time of the solidification of the storage material 23 can be uniformly distributed over the pipe length. |
