Effektive Wärmedämmung bei Anwendung von Stahl-Kassettenprofilen

Effective thermal insulation by application of steel cassette profiles.

Steel cassette constructions are widely used for industrial and commercial buildings. Up to now mainly steel cassette constructions with a generally 3 mm thin marker space between cassette profile and exterior trapezoidal profile are realised. One thermal optimised alternative is the design of cassette constructions with continuous insulation layer between cassette profile and exterior profile. Thus the thermal bridging effect in the thermal sphere of the cassette web can be reduced significantly.
Subject of the following article is first the numerical investigation for possible simplifications of the geometric set-up of steel cassette constructions. On the basis of these simplified steel cassettes thermal calculations of a huge number of constructions are carried out during the further procedure, which in conclusion opened out into an easy to use design table. The table enables for the deployed amount of insulation in dependency on each construction to determine an effective thickness of the thermal insulation. Furthermore the practically applied design help "IFBS-Fachinformation 4.05" is opposed to the results. After comparing both methods the deliverables of the numerical calculations are put into relation to the current reference values of the German Energy Saving Regulation. The discussion and assessment of these results conclude the article.