| 摘要 |
The direct cooling system is pre-mounted on rolled-up grid mats, for fastening to a ceiling and plastering. It is a single tube system with flow reversal, or a double tube system with opposed flow. The cooling pipes are of plastic and are of thickness of between 6mm and max. 1cm. Grid mats with plastic pipes can be fastened to a ceiling by any means, and the height differences compensated for by plastering.
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