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Effect Of The Distribution Of Faults And Operating Conditions On Afdd Performance Evaluations, David Yuill, James E. Braun
Effect Of The Distribution Of Faults And Operating Conditions On Afdd Performance Evaluations, David Yuill, James E. Braun
David Yuill
Automated fault detection and diagnosis (AFDD) tools are used to identify degradation faults that reduce
the performance and life of air-conditioning equipment. A recent methodology has been developed to
evaluate the performance of AFDD tools. The methodology involves feeding a library of input data to
an AFDD protocol and categorizing the results. The current paper describes a study that has been
conducted to assess the effect of using various input data sets in the evaluations. These input data sets
include different distributions of fault type, fault intensity, and operating temperatures. Case study
evaluations of three AFDD protocols in current widespread …
A Prediction Method For Overall Economic Value Of Fault Detection And Diagnostic Tools For Rooftop And Split Systems, David Yuill, James E. Braun
A Prediction Method For Overall Economic Value Of Fault Detection And Diagnostic Tools For Rooftop And Split Systems, David Yuill, James E. Braun
David Yuill
Fault detection and diagnostics (FDD) tools for air-conditioning application may perform well or poorly, but it is difficult to characterize this performance in a meaningful way. Some recently proposed evaluation techniques have provided various statistics to characterize FDD performance, but these results can be difficult for a potential adopter of FDD to understand. A new method of characterizing FDD performance by predicting the overall economic value of the FDD tool is proposed in this paper. It is applicable to FDD tools intended for air-cooled unitary air-conditioners, such as rooftop units (RTU) and split systems. The method gives an estimated dollar …