Development And Calibration Of A Reduced-order Energy Performance Model For A Mixed-use Building

Abstract

Previous studies show that building HVAC systems can consume greater than 20% more electrical energy than was the design intent largely because of equipment performance degradation, equipment failures, or detrimental interactions among subsystems. A key barrier is the lack of information at sufficient detail to isolate abnormal changes in load conditions or anomalous equipment operations. One of the solutions is to develop model-based diagnostic methods. Hence, developing a calibrated energy performance model becomes the key component. In this paper, an integrated energy model for a mix-use building was developed based on a reduced-order thermal model, which includes building envelope model, and HVAC primary and secondary system models. The integrated model was validated against real-time measured data within w15% error in terms of the load differences.