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Model-based fault detection and diagnosis for cooling towers.

Author(s) : AHN B. C., MITCHELL J. W., MCINTOSH I. B. D.

Summary

A model-based method for the detection and diagnosis of faults in the cooling tower circuit of a central chilled water facility is presented. The faults are detected through deviations in the values of characteristic quantities from the corresponding values for fault-free operation. Data chosen to represent the performance are the conductance-area product of the tower, the approach, the effectiveness, and fan power. With faults present, the deviations are significant, which allows the faults to be detected. The pattern of the deviations is different for each fault, allowing rules to be developed that allow diagnosis of the source of the fault.

Details

  • Original title: Model-based fault detection and diagnosis for cooling towers.
  • Record ID : 2002-1536
  • Languages: English
  • Source: ASHRAE Transactions. 2001 Winter Meeting, Atlanta, GA. Volume 107, part 1 + CD-ROM.
  • Publication date: 2001
  • Document available for consultation in the library of the IIR headquarters only.

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