Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Fault Symptom Analysis and Diagnosis for a Single-Effect Absorption Chiller

흡수식 냉동시스템의 고장현상 분석과 진단

  • 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)
  • 한동원 (고려대학교 대학원 기계공학과) ;
  • 장영수 (국민대학교 기계시스템공학부) ;
  • 김용찬 (고려대학교 기계공학과)
  • Received : 2015.06.04
  • Accepted : 2015.10.15
  • Published : 2015.11.10
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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

References

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Cited by

  1. Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2015 vol.28, pp.6, 2016, https://doi.org/10.6110/KJACR.2016.28.6.256