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Fatigue Evaluation of District Heat Pipes based on the Measured Data  

Park, Jin-Eun (나고야대학 사회기반공학과)
Kyung, Kab-Soo (한국해양대학교 토목공학과)
An, Yong-Mo (한국지역난방공사 감사실)
Kwon, Soon-Cheol (삼부토건 기술연구소)
Publication Information
Journal of Korean Society of Steel Construction / v.23, no.5, 2011 , pp. 569-579 More about this Journal
Abstract
Heating pipes, which are among the main equipment in district heating systems, can be classified into supply and return pipes. Because when the district heating transmission pipe, which is charged with district heating in small to medium-size cities, is under thermal stress during temperature variances in heating water, it suffers from the fatigue phenomenon caused by the thermal stress, according to the number of its service years. District heatingpipes have shown various characteristics according to the operating condition of the service connections, and the irregular temperature variance has had a bad influence on fatigue heating pipes. Therefore, in this study, a field test on laid heating pipes was performed, and the data for each region were analyzed. Also, the fatigue safety of district heating pipes was evaluated via cycle-based evaluation and stress-based evaluation.
Keywords
district heat pipes; cycle-based evaluation; stress-based evaluation; fatigue evaluation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 IEA District Heating and Cooling (1996) Temperature Variations in Preinsulated DH Pipes Low Cycle Fatigue, Report, pp.18-40.
2 장윤석, 정성욱, 김형근, 최재붕, 김영진(2005) 운전이력을 고려한 지역난방 열배관의 피로수명평가 및 관리체계 구축, 대한기계학회논문집 A권, 대한기계학회, pp.1161-1288.
3 한국공업규격(2009) KS기준 D3562, 압력배관용 탄소 강관, p.8.
4 한국지역난방공사(2008) 열공급규정. pp.3-7, p.53
5 ASTM (1989) Carbon Steel, Low and Intermediate-Tensil Strength, A672 and A 85/A285M Pressure Vessel Plates, pp.537-541.
6 European District Heating Pipe Manufacturers Association (1997) District Heating Handbook, pp.124-131.
7 European Standard Norme Europeenne Europaische Norm (2004) Design of Steel Structure, Part 1.9: Fatigue, pp.14-29.
8 IEA District Heating and Cooling (1999) Fatigue Analysis of District Heating Systems, Report, pp.13-33.
9 LUSAS Version 14 (2010) Examples Manual, pp.193-206.
10 Miner, M.A (1945) Cumulative damage in Fatigue, Journal of Applied Mechanics, Vol.67, pp.159.
11 Chang, Y.S., Jung, S.W., Lee, S.M., Choi, J.B., and Kim, Y.J.(2003) Fatigue data acquisition, evaluation and optimization of district heating pipes, Applied Thermal Engineering, Vol.27, pp.2524-2535.