Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
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Study on the Analysis of Failure Cause and Determination of Life Test Mode of Capsule

축열조 캡슐 고장원인 분석과 수명시험 모드 결정에 관한 연구

  • Kang, Bosik (Department of Reliability Assessment, Korea Institute of Machinery & Materials) ;
  • Lee, Yongbum (Department of Reliability Assessment, Korea Institute of Machinery & Materials) ;
  • Jung, Dongsoo (Department of Reliability Assessment, Korea Institute of Machinery & Materials) ;
  • Lee, Chungsung (Department of Reliability Assessment, Korea Institute of Machinery & Materials)
  • 강보식 (한국기계연구원 신뢰성평가연구실) ;
  • 이용범 (한국기계연구원 신뢰성평가연구실) ;
  • 정동수 (한국기계연구원 신뢰성평가연구실) ;
  • 이충성 (한국기계연구원 신뢰성평가연구실)
  • Received : 2018.08.29
  • Accepted : 2018.09.19
  • Published : 2018.09.25
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Abstract

Purpose: The purpose of this study is to evaluate the life of the capsule, which is a core part of the heat storage cooling system. This paper will develop a life test mode that can reproduce environment conditions through the analysis of capsule shrinkage and expansion characteristics. Methods: In order to determine the life test mode of the capsule, this paper analyzed the case of field failures and analyzed the deformation characteristics according to the pressure fluctuation of the capsule. The method to find out whether the field failure and deformation analysis results are consistent is the testing with the construction of the repetition pressure test equipment and the thermal cycle test to reproduce the freezing and thawing characteristics. Results: In this study, failure mode analysis and analysis of freezing and thawing characteristics regarding to the capsule positions were completed. Based on this test & analysis results, this paper have been able to determine the main parameters for determining the life test mode, the freezing and thawing time. Conclusion: Determining the lifetime mode of the capsule can be used to improve the life and performance of the thermal storage system.

Keywords

References

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