| 摘要 |
<p>A vacuum solar collector with a seamless deep-drawn trough (2) which contains an absorber (9) and guide-ways (12, 13) for a heat transfer medium and is provided with a flange (4) on which is applied a window (7) permeable to radiation and covering the trough, said window being supported over its surface by support elements (17) located at a distance, said elements in turn resting on the floor (3) of the trough. Said floor (3) has an undulating shape, in the form of corrugated sheet.</p> |
