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Publication Citation: Design of a steady-state detector for fault detection and diagnosis of a residential air conditioner

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Author(s): Minsung Kim; Seok H. Yoon; Piotr A. Domanski; William V. Payne;
Title: Design of a steady-state detector for fault detection and diagnosis of a residential air conditioner
Published: May 01, 2008
Abstract: This paper presents a general methodology for developing a steady-state detector for a vapor compression system based on a moving window and using standard deviations of seven measurements selected as features. The feature thresholds and optimized moving window size were based upon steady-state no-fault tests and startup transient tests. The study showed that evaporator superheat and condenser subcooling were sufficient for determining the onset of steady-state during the startup transient. However, they misidentified steadystate during indoor temperature change tests where evaporator saturation temperature and air temperature change across the evaporator were needed for proper steady-state identification. Hence, the paper recommends including all fault detection and diagnosis (FDD) features in the steady-state detector to ensure the robustness of the detector because different features may play key roles with different transients.
Citation: International Journal of Refrigeration
Volume: 31
Issue: No. 5
Pages: pp. 790 - 799
Keywords: detection; steady state; air conditioning; residential buildings; compressing; tests; methodology; windows; fault trees; refrigerants
Research Areas: Building Equipment Efficiency
PDF version: PDF Document Click here to retrieve PDF version of paper (660KB)