Beitrag zur Methodik der pauschalen Bestimmung von Wärmedurchgangskoeffizienten bei bestehenden Wohngebäuden

Contribution to the methodology of the general terms at coefficients of heat transfer in existing residential buildings.

Due to an insufficient or missing data base concerning existing residential buildings it is permitted to use general values, e. g. for the heat transfer coefficient (U-value) according to the German Energy Saving Ordinate. The values for simplified data acquisition are provided by the German Federal Ministry of Transport, Building and Urban Development. The present study shows that the current general heat transfer coefficient results from a too simplified approach, with considerable influence on the calculated energy demand. This is the reason to extend the existing data table with further data, e. g. thickness of building component.