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http://dx.doi.org/10.6110/KJACR.2015.27.11.587

Fault Symptom Analysis and Diagnosis for a Single-Effect Absorption Chiller  

Han, Dongwon (Graduate School of Mechanical Engineering, Korea University)
Chang, Young-Soo (School of Mechanical System Engineering, Kookmin University)
Kim, Yongchan (Department of Mechanical Engineering, Korea University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.27, no.11, 2015 , pp. 587-595 More about this Journal
Abstract
In this study, fault symptoms were simulated and analyzed for a single-effect absorption chiller. The fault patterns of fault detection parameters were tabulated using the fault symptom simulation results. Fault detection and diagnosis by a process history-based method were performed for the in-situ experiment of a single-effect absorption chiller. Simulated fault modes for the in-situ experimental study are the decreases in cooling water and chilled water mass flow rates. Five no-fault reference models for fault detection of a single-effect absorption chiller were developed using fault-free steady-state data. A sensitivity analysis of fault detection using the normalized distance method was carried out with respect to fault progress. When mass flow rates of the cooling and chilled water decrease by more than 19.3% and 17.8%, respectively, the fault can be detected using the normalized distance method, and COP reductions are 6.8% and 4.7%, respectively, compared with normal operation performance. The pattern recognition method for fault diagnosis of a single-effect absorption chiller was found to indicate each failure mode accurately.
Keywords
Fault detection and diagnosis; Absorption chiller; Normalized distance method; Classifier;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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