Condenser scaling fault detection and diagnosis based on operating data

Proposes the fault detection and diagnosis (FDD) strategy based on a model method for centrifugal chillers, selects four performance indexes of strong physical meaning to depict the operation status of centrifugal chillers, establishes a prediction model of property parameters with normal operation data, and obtains the residual error by comparing the calculated value with the reference value. Gets the fault diagnostic rules by analyzing the relation between chiller fault and the property parameters. The fault diagnosis results show that the FDD strategy can detect and diagnose the condenser fault effectively.