Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Optimization of District Heating Pipes Considering Thermal Fatigue Life

열피로 수명을 고려한 지역난방 배관의 최적화

  • 안민용 (성균관대학교 대학원) ;
  • 장윤석 (성균관대학교 기계공학부) ;
  • 최재붕 (성균관대학교 기계공학부) ;
  • 김상호 (한국지역난방공사 연구개발실) ;
  • 김연홍 (한국지역난방공사 연구개발실) ;
  • 김영진 (성균관대학교 기계공학부)
  • Published : 2006.06.01
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Abstract

Recently, in proportion to increased demand on environmentally-friendly heat source, efficient management of district heating(DH) system becomes one of important issue. The objectives of this paper are to systematize data processing of transition temperature, investigate the effect of temperature variations on thermal fatigue and find out a way to improve design fractures of Korean DH pipes. For this purpose, reliable fatigue lift evaluation procedures are examined and applied to quantify thermal fatigue lives. Also, as a prototypal optimization analysis results, mean value of original cross sectional area of selected pipes was reduced 18.6% sustaining their sufficient margins against fatigue failure. So, it is anticipated that the output of this research can be used as useful information of optimal design and operation in the future.

Keywords

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