Konferensartikel

Simulations of energy supply systems on the urban scale call for dedicated thermal building models with low simulation times and still considering relevant dynamic effects. A common approach for such models are reduced order thermal networks that model heat transfer and storage via thermal resistances and capacitances. To contribute to the open question, how much wall elements should be used in such approaches, this paper characterizes and compares four different model topologies with one, two, three and four wall elements. The characterization using the Linear Analysis toolbox in Modelica and Bode plots in Python reveals a significantly different behavior of the One-Element-Model compared to the higher order models. In consequence, the Two-Elements-Model with comparably low simulation times and a similar behavior as the higher order models qualifies for urban scale simulations.

Modelica, Reduced Order Model, Urban Building Energy Model, Bode plot, Linear Analysis Toolbox