| 摘要 |
PURPOSE: A vacuum solar heat collection pipe and solar collector thereof are provided to maintain the heat of heat medium oil over a long period of time by a vacuum unit as the radiant heat absorbed to the entire cylindrical surface is used for the heat medium oil. CONSTITUTION: A vacuum solar heat collection pipe(2) comprises a transparent double-vacuum tube. The transparent double-vacuum tube comprises an inner tube(6), an outer tube(4), and a vacuum portion(8). The vacuum portion is formed between the inner tube and the outer tube. The inner tube comprises a path(14) for heat medium oil. A radiant heat absorbing film is formed on the outer surface of the inner tube. The radiant heat absorbing film absorbs the heat generated by the irradiation of a light source. A concave reflection film(12) is formed on the semi cylindrical surface of the outer tube. The concave reflection film reflects incident sunlight(C) to the inner tube. |
