Decoupling features for fault detection and diagnosis on centrifugal chillers (1486-RP)

With growing realization of the benefits brought by fault detection and diagnosis(FDD), a large body of research pertinent to FDD methods for centrifugal chillers has been conducted during the past two decades. However, at the present time, relatively few FDD methods can handle multiple simultaneous faults on centrifugal chillers. This article describes the development of some decoupling features, which are the basis of a decoupling-based FDD methodology that can handle multiple simultaneous faults on centrifugal chillers. The performance of the decoupling features were validated and evaluated by the laboratory data from a 90-ton centrifugal chiller tested in a laboratory environment.