| 摘要 |
PURPOSE:To improve a heat collecting efficiency of a solar heat collector, by a method wherein a heat collection is made as liquid phase water percolates downward through a water holding layer formed on a surface expanded by a porous material or a fibrous material. CONSTITUTION:In a titled solar heat collector, an air current circulates in the order of a heat collector body 5, a blower 7, a direct contact system heat exchanger 6 and a body 5. After water is implanted to a heat accumulating tank 8, it is circulated by a pump 9 through a water tank 8, the pump 9, the heat exchanger 6, and the water tank 8 in that order. Meanwhile, a part of water is supplied to the heat collector body 5 through a water feed line for a water holding layer, a water-holding layer is formed on a surface part 3 expanded by a porous material or a fibrous material, and water, evaporated by a solar heat thereat, is mixed in an air current. An air current, containing the vapor, is heat- exhanged with water at the heat exchanger 6, the heated water is stored in the heat accumulating tank 8, and it is utilized appropriately or is re-cycled for further heating. |
