| 摘要 |
PURPOSE:To enable a heat collecting pipe to face toward an optimum direction easily as the position of the sun changes by a method wherein the heat collecting pipe is coaxially and rotatably connected to a heat exchanger while the former is brought into contact with the latter in a heat conductive manner. CONSTITUTION:A condensing section 11 of a heat pipe of the heat collecting pipe 10 is made to be of a double structure having a U-shaped concave section and a cylindrical end section 13 is provided in the concave section so that heat medium pipes 12 are received in the concave section therethrough. In this case, the cylindrical end section 13 is coaxially and rotatably fitted into the condensing section 11 in a heat conductive manner leaving a clearance 14 therebetween and a lubricating agent having a high rate of heat conductivity is filled into the clearance 14. As a consequence, the heat collecting pipe 10 can rotate in a coaxial relationship with the heat exchanger while the heat medium pipes 12 are held stationary so that is becomes possible to increase the light receiving rate of the heat collecting pipe 10. |
