Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Verification of a Low Order Building Model for the Modelica Library AixLib using ASHRAE Standard 140

Moritz Lauster, Ana Constantin-
Peter Remmen, Marcus Fuchs, Dirk Mu¨ller RWTH Aachen University, E.ON Energy Research Center, Institute for Energy Efficient Buildings and Indoor Climate, Aachen, Germany

Abstract: Low order building models (LOM) implemented in state-of-the art modeling languages like Modelica allow for simulations with reduced computational effort but have a reduced dynamic behavior. The Modelica library AixLib includes a LOM for urban scale simulations. This paper verifies the LOM using the ASHRAE Standard 140 to evaluate the impact of the low order approach. The model is within the range of the standard except few outliers for free floating temperature test cases. The outliers are related to the reduced dynamics within the LOM and are in an acceptable range in the context of urban scale simulations focusing on heat load predictions.
Pages: 1149 - 1158