| 摘要 |
The invention relates to a ceiling arrangement for building premises, comprising an air permeable insulation layer (5) and an air gap (4) arranged above said insulation layer (5). The air gap (4) is bounded above by an airtight material layer (3). According to the invention a perforated material (8) is arranged below the insulation layer (5). A lower air gap (6) is arranged below the perforated material and is bounded below by an airtight material layer (7) with at least one through-opening (12) for distribution of air in the form of an elongated slot. Furthermore, an air intake opening (11) is arranged for admitting ambient air to the upper air gap (4).
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