Paper Conference

Proceedings of SimBuild Conference 2010: 4th conference of IBPSA-USA


Heat Flow Modeling of HVAC Systems for Fault Detection and Diagnosis

Gerhard Zimmermann, Yan Lu, George Lo
Informatik, University of Kaiserslautern, Germany
Siemens Corporation, Corporate Research Division, Princeton, USA

Abstract: We present a new graph-based modeling methodology called Heat Flow Modeling (HFM) for HVAC system fault detection and diagnosis. It aims at using the mod-ularity of graphs to achieve a direct automated mapping of HVAC structures and components into HFM graphs and to use node behavior model and software libraries to translate HFM graphs into software systems that can be directly integrated in HVAC control systems. The function of the graph is on one hand a simplified performance simulation, on the other hand a failure rule evaluation. The graph structure allows for central or distributed implementations. Prototype implementations in Simulink and in a software specification language have been performed.
Pages: 215 - 222