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Fault detection and diagnosis in chillers--part I: Model development and application / Discussion
冷水机组故障检测与诊断第一部分:模型开发与应用/讨论
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The existence offaults in heating, ventilating, air-conditioning, and refrigerating (HVAC&R) systems plays a significant role in the degradation ofcomfort levels for building occupants. In this paper, a mechanical model for fault detection and diagnosis (FDD) in a chiller subsystem is developed.With the model, the characteristic quantities (CQs) that are most appropriate for identifying faults are found. A detailed mechanistic model originally developed by Braun (Braun et al. 1988) and used to analyze a 5500-toncentrifugal chiller at Dallas/Fort Worth (D/FW) Airport is used as a base for the fault detection development, The model is calibrated using data from an operating site. The use of the model in identifying operating faults is discussed. |
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