| 摘要 |
<p>A solar-energy collector having an absorber (5, 31) located in the bottom of a box-like casing, which includes a cover plate (1) which is permeable to solar radiation. The casing encloses a dry gas, thereby to avoid condensation in the solar-energy collector. The casing is hermetically sealed and contains a constant quantity of gas. The cover plate (1) is movably suspended in a resilient frame (2, 20) which forms part of the casing and which permits movement of the cover plate (1) in response to changes in gas temperature. This enables harmful pressure variations to be avoided in the collector, and the cover plate (1) will rest, well protected, on an elastically resilient cushion of gas.</p> |
