| 摘要 |
The invention relates to a device by a constructional part (1) preferably extending between supporting parts (10, 11, 12) of a building or plant construction, and preferably forming a partition between storeys, such as a floor or deck. The constructional part (1) is self-supported, preferably of light-weight material and comprises a channel system for air, so that the constructional part (1) may provide heating and/or cooling of rooms in the building or plant construction, or may thaw snow and ice lying on the construciontal part, respectively. The constructional part (1) is made up of at least three interconnected layers (2, 3, 4) of corrugated sheet material. The layers (2, 3, 4) are arranged at angles in relation to each other, in such a way that corrugations form a preferably right angle between themselves, so that the corrugations of the layers (2, 3, 4) form a channel system in the constructional part (1). A number of holes (6) are made in the intermediate layer (3). The holes (6) extend transversely to and preferably in a plane through the mid section of the corrugations, so that air at a temperature suitable for heating and/or cooling, or thawing, respectively, may be supplied and/or extracted in a controlled manner in the channel system formed. The corrugations of the upper layer (4) are advantageously filled with an additional cast (5) of light-weight material of good thermal conductivity to a level at least at the height of the corrugation ridges of the upper sheet layer (4).
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