Sound insulation with transparent thermal insulation. Schallschutz mit transparenter Waermedaemmung

Transparent thermal insulation is used more and more, for reasons of passive use of solar energy, as heat retention in glass facades. Various systems have already been put on the market by several manufacturers. Where the facade is subjected to requirements with regard to the protection against noise, e.g. in the case of elevated external noise levels, or with regard to the protection against flanking of noise, as in the case of interior work with prefabricated elements, it is necessary to know the sound engineering parameters of the transparent thermal insulation, in order to be able to design the noise-relevant structural parts of the facade with transparent thermal insulation. The following describes measurements of the sound absorption coefficient in accordance with DIN 52215 and DIN 52212 as well as measurements carried out to determine the sound insulation according to DIN 52210 on complete specimen elements, by means of which surprisingly favourable values exceeding all expectations could be supported. (orig.).