CEILING ELEMENT, IN PARTICULAR HEATING AND COOLING CEILING ELEMENT, ON THE BASIS OF ALUMINIUM OR STEEL

摘要

The present invention relates to a ceiling element of or with a metal plate, the side of which that is facing the room comprises a layer such that, in the range of thermal infrared radiation (2.0 to 50 µm), the plate has on this side a thermal emission at 100°C in accordance with ISO 22975-3:2014; Annex A.2 of at least 50%, and the side of which that is facing away from the room is formed by the metal of the plate itself, which in the case of plates of aluminium and/or an aluminium alloy does not have any coating apart from a possible natural oxide skin, wherein the metal plate consists of aluminium or an aluminium alloy, which has on the side thereof that is facing the room an anodising layer of at least 1 µm, or the metal plate has on the side thereof that is facing the room an at least 2 µm thick, transparent layer of an organic polymer containing hydrofluorocarbon chains or of silicon oxide obtained by the sol-gel process as a single layer or as an outermost layer of a stack of layers, and wherein the metal plate is electropolished, at least on the side that is facing the room. The invention also relates to a heating and/or cooling ceiling element, comprising such a ceiling element and also at least one pipe that is fastened to the rear side of said ceiling element and is designed for the circulation of a heat transfer medium.