| 摘要 |
The invention relates to a panel, comprising: two plates of substantially equal dimensions positioned on each other; which plates are connected medium-tightly to each other along their peripheral zones; which plates enclose a cavity; a feed for feeding a liquid, in particular water, into the cavity; and openings close to and along a peripheral edge of the panel for flow of the liquid out of the cavity during operation such that during operation the openings are situated close to the upper peripheral edge of the panel, wherein the liquid flows downward over at least one outer surface of the panel.
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