Paper Conference

Proceedings of BauSim Conference 2012: 4th Conference of IBPSA-Germany and Austria


Zum Einfluss mehrdimensionaler Wärmeleitung auf das Wärmespeichervermögen von Baukonstruktionen

Klaus Krec, Nackler Joachim, Tomasz Kornicki

Abstract: The influence of thermal bridges on the thermal performance of the building envelope is generally treated time-independent. In this way the effects of heat storage are not taken into consideration. Using the generalized conductance theory - by means of exemplary parameter studies - it is examined how strong the influence of heat storage can be to the heat transfer. As a major result, the recommendation can be given, that the creation of the thermally one-dimensional model of the building envelope should be based on inside dimensions and not on outside dimensions as it is in common practice. In addition, it is clearly shown that stationary or quasi-steady-state calculation approaches are unsuitable for analyzing the heat transfer through earth-coupling components.
Pages: 155 - 161