| 摘要 |
A solar heat collection apparatus heats a heating medium flowing through a heat collecting tube by collecting sunlight in the heat collecting tube using a curved surface mirror. The heat collecting tube includes an inner tube through which the heating medium flows, an outer tube provided on an outer side of the inner tube, and a bellows, a flange, and a cylinder member connecting the inner tube to the outer tube. An insulating space is formed between the inner tube and the outer tube, and an exhaust hole that communicates with the insulating space is formed in the flange. The exhaust hole is sealed by a sealing member welded to the flange. As a result, damage to the outer tube can be prevented, and heat collecting tubes can be more easily connected to each other in the lengthwise direction. |
