| 摘要 |
<p>The purpose of the present invention is to provide a solar light heat collecting tube having high heat collection efficiency, and a solar light heat collector using the solar light heat collecting tube. This solar light heat collecting tube that heats a heat medium by collecting solar light has a partially cut cylindrical shape, which has a slit-like opening in the whole region in the long axis direction, and which has a ratio (the opening/inner wall) of 2.5-30.0 % between the area of an inner wall surface and the area of the opening.</p> |
