| 摘要 |
PURPOSE:To efficiently collect the solar heat by connecting a bottom plate having an elongated recesses and a transparent top plate with a space formed inbetween, disposing a black fibrous material on the inner surface of the bottom plate, and letting a thermal medium flow in said space. CONSTITUTION:A bottom plate 2 having at least one elongated recesses 3 and a transparent top plate 5 are connected with a space formed inbetween, a black fibrous material 6 is disposed on the inner surface of the bottom plate 2, and a thermal medium is flown in said space. By this arrangement, a required volume of the black fibrous material 6 can be made less than a half of that for conventional apparatus, and also manufacturing becomes easy, and yet the heat collection efficiency can be improved. |
