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Health Monitoring and Continuous Commissioning of Centrifugal Chiller Systems
Abstract
This paper presents strategies for detecting and diagnosing the chiller component faults and the sensor
faults involved in chiller conditioning monitoring and control. The two strategies are used in series. One strategy
diagnoses and validates the sensor faults. After the sensor faults are validated, the other strategy monitors the health
condition and diagnoses the faults of chiller components. The health monitoring and diagnosis of the sensors are
conducted using PCA (Principle Component Analysis) method. The chiller component condition monitoring and
diagnosis is conducted based on the reference models of six performance indexes and an online threshold generator
updating the fault detection thresholds following the change of working conditions. The paper also presents the
validation of the two strategies using the field data of the BMS in a large office building.
Subject
health monitoringfault diagnosis
component fault
sensor fault
chiller system
PCA
performance index
threshold estimation
Citation
Cui, J.; Wang, S. (2004). Health Monitoring and Continuous Commissioning of Centrifugal Chiller Systems. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /5034.