Browse > Article
http://dx.doi.org/10.3795/KSME-A.2005.29.9.1235

Establishment of Fatigue Life Evaluation and Management System for District Beating Pipes Considering Operating Temperature Transition Data  

Chang Yoon-Suk (성균관대학교 기계공학부)
Jung Sung-Wook (성균관대학교 기계공학부)
Kim Hyeong-Keun (성균관대학교 기계공학부)
Choi Jae-Boong (성균관대학교 기계공학부)
Kim Sang-Ho (한국지역난방공사 연구개발실)
Kim Youn-Hong (한국지역난방공사 연구개발실)
Kim Young-Jin (성균관대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.9, 2005 , pp. 1235-1242 More about this Journal
Abstract
A district heating(DH) system supplies environmentally-friend heat and is appropriate for reduction of energy consumption and/or air pollutions. The DH transmission pipe, composed of supply and return pipes, has been used to transmit the heat and prevent heat loss during transportation. The two types of pipes are operated at a temperature of $75\~115^{\circ}C\;and\;40\~65^{\circ}C$, respectively, with an operating pressure of less than 1.568MPa. The objectives of this paper are to systematize data processing of transition temperature and investigate its effects on fatigue life of DH pipes. For the sake of this, about 5 millions temperature data were measured during one year at ten locations, and then available fatigue lift estimation schemes were examined and applied to quantify the specific thermal fatigue life of each pipe. As a result, a relational database management system as well as reliable fatigue lift evaluation procedures is established for Korean DH pipes. Also, since the prototypal evaluation results satisfied both cycle-based and stress-based fatigue criteria, those can be used as useful information in the future fer optimal design, operation and energy saving via setting of efficient condition and stabilization of water temperature.
Keywords
Cumulative Usage factor; District Heating ripe; Equivalent Full Temperature Cycle; Peak/Valley Filtering; Rainflow Counting; Relational Database;
Citations & Related Records
연도 인용수 순위
  • Reference
1 ASTM, 1989, 'Carbon Steel, Low and Intermediate-Tensile Strength,' A 672 and A 285/A 285M Pressure Vessel Plates, pp.537-541
2 ASME, 1989, 'Ferrous Materials,' B&PV Code Sec. II Material Specifications Part A, ASME, New York
3 Pipe & tube informaton and international trade center,'http://www.e-pipe.co.kr,' accessed on Dec. 15, 2004
4 Kim, J.G., 2002, 'A Study on Corrosion Fatigue Crack for District Heating Pipes,' Sungkyunkwan Univ.
5 ASME, 1998, 'Rules for construction of nuclear Power plant components,' B& PV Code Sec. III, Div. 1, Subsection NB, ASME, New York, pp. 68-92
6 Bannantine, J.A., Comer, J.J. and Handrock, J.L., 1990, 'Fundamentals of Metal Fatigue Analysis,' 1th Edition, Prentice Hall, pp.184-196
7 ANSYSM, 2004, 'Introduction to ANSYS 8.0,' ANSYS Inc
8 Matsuishi, M. and Endo, T., 1968, 'Fatigue of Metals Subjected to Varying Stress,' Paper Presented to Japan Society of Mechanical Engineers, Fukoika, Janpn
9 Bandnantine, J.A., Comer, J.J. and Handrock, J.L., 1990, 'Fundamentals of Metal Fatigue Analysis' Prentice Hall, pp.178-84
10 I-DEAS, 2000, 'I-Deas Assembly Design,' SDRC Korea
11 Silberschatz, A., Korth, H.F. and Sudarshan, S., 2002, 'Database System Concepts 4th Edition,' McGrawHill, New York, pp.3-4
12 Korea Ditrict Heating Corp., 'http://kdhc.co.kr,' acessed on Dec. 15, 2004
13 Kim, Y.H., Woo, S.M. and Kim, T.K., 2003, 'Database Modeling,' FreeLec, pp.31-33
14 Randolv, P. and Hansen, K. E., 1996, 'Temperature Variations in Preinsulated DH Pipes Low Cycle Fatigue,' Internaitonal Energy Agency
15 McClellan, J.H., Schafer, R.W. and Yoder, M.A., 1997, 'DSP First: A Multimedia Approach,' Prentice Hall, pp. 134-149
16 International Energy Agency, 'http://www.iea.org,' accessed on Dec. 15, 2004