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Model-based condition monitoring of an HVAC cooling coil sub-system in a real building.

Author(s) : BUSWELL R. A., HAVES P., WRIGHT J.

Type of article: Article

Summary

A comparison of the performance of two fault detection and diagnosis methods applied to a cooling coil subsystem in an air-handling unit installed in a real building is presented. Both methods employ a first principle-based reference model of the target system. One scheme carries out diagnosis using expert rules and the other re-estimates selected parameters of the system model that correspond to particular faults. The procedures and information required to configure the schemes for condition monitoring are discussed. The results of testing the methods on an HVAC cooling coil subsystem in a commercial office building in the UK over an entire season are reported. Both methods were able to both detect faults and provide some diagnosis. The expert rule method, however, appears to be more robust. Issues associated with the configuration and implementation of both methods are discussed in terms of performance and cost.

Details

  • Original title: Model-based condition monitoring of an HVAC cooling coil sub-system in a real building.
  • Record ID : 2004-0863
  • Languages: English
  • Source: Build. Serv. Eng. Res. Technol. - vol. 24 - n. 2
  • Publication date: 2003
  • Document available for consultation in the library of the IIR headquarters only.

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