| 摘要 |
PURPOSE: To evenly melt snow by dividing a panel member comprising a water permeation-proof member of low radiation ratio such as Al foil and the like on at least one surface, in the inclination direction of a roof, directing its longitudinal direction orthogonally to the inclination direction, and circulating a heating medium inside of the panel member. CONSTITUTION: The heat exchange panels 6, 6' are formed by mounting the watertight sheets manufactured by laminating Al foil and the like on both surfaces of the woven cloth of double structure manufactured by weaving, for example, filaments in a crossed state. Then the panels 6, 6' are divided into a plurality of parts in the inclination direction of a roof, and its longitudinal direction is directed orthogonally to the inclination direction of the roof. The hot water is supplied from a boiler 8 to the panels 6, 6' respectively from the directions opposite to each other from the headers 7, 7' of two lines through a circulation pump 9, to reduce the gradient of temperature on the surfaces of the panels 6, 6'. Accordingly the snow can be evenly melted, and the heat radiation insulation effect can be obtained. |
