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Optimization Methods For Predictive Maintenance Scheduling Of Building Heating/Cooling Equipment With Performance Decay, Yaqing Wu, Christos T. Maravelias, Yuqiu Jiang, Jingduo Fan, Michael J. Wenzel, Elbsat N. Mohammad, Robert D. Turney

International High Performance Buildings Conference

While various models and methods have been proposed for operating and controlling building heating, ventilation and air conditioning (HVAC) systems, equipment decay (e.g., chiller tube fouling or boiler scaling), which results in lower energy efficiency and higher cost, has received limited attention. Accordingly, in this paper, we present an optimization model (mixed-integer linear programming, MILP) for predictive maintenance of HVAC systems with sufficient thermal energy storage (TES). We simultaneously consider the operation and maintenance schedule because of their close mutual interdependence. In addition, a method to accurately approximate equipment operation is provided for long-term scheduling. The proposed model offers decisions …