Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Cause of and Solution for Damage to STS310S Tube in Heat Exchange Devices

열교환기 STS310S 튜브의 손상 원인 및 대책

  • Kim, Jin Wook (Authorized Nuclear Inspection Group, Korea Institute of Materials Science) ;
  • Kim, Seon Hwa (POSCO energy) ;
  • Jeong, Jin Hyuk (POSCO energy) ;
  • Kim, Young Soo (Graduate School, UR Interdisciplinary Program of Mechanical Engineering, Pukyong Nat'l Univ.) ;
  • Nam, Ki Woo (Department of Materials Science and Engineering, Pukyong Nat'l Univ.)
  • Received : 2014.03.12
  • Accepted : 2014.11.27
  • Published : 2015.02.01
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Abstract

The STS310S tube has excellent heat transfer ability and is widely used as the material for heat transfer tubes in heat exchange devices. Mixtures of gas and water flow inside the tube whereas hot flame flows outside it. In this environment, the material of the tube may undergo embrittlement, which can cause leakage. Cracks can propagate from the inside of the tube to its outside and result in brittle fracture. This study identified the cause of brittle fracture in the STS310S tube through experiments and discussion, and proposed solutions to prevent fracture.

STS310S 는 열전달 능력이 우수하여, 열교환기용 열전달 튜브 재료로서 많이 사용된다. 튜브의 안쪽은 가스와 물의 혼합물이 흐르고, 튜브 바깥은 화염이 흐른다. 이와 같은 환경에서 튜브는 취화하였고, 누설이 발생하였다. 균열은 안쪽에서 바깥으로 전파하여 취성파괴 하였다. 본 연구는 취성파괴의 원인을 실험과 고찰을 통하여 규명하고, 해결 방법을 제안하였다.

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References

  1. Marcenaro, B. and Federici, F., 2005, "MCFC Fuel Cells Development at Ansaldo Fuel Cells," Proceedings of the. International Hydrogen Energy Congress and Exhibition (ICHET 2005), 13-15 July, 2005, Istanbul, Turkey.
  2. Ghezel-Ayagh, H., Walzak, J., Patel, D., Daly, J., Maru, H., Sanderson, R. and Livingood, W., 2005, "State of Direct Fuel Cell/Turbine Systems Development," Journal of Power Sources, Vol. 152, pp. 219-225. https://doi.org/10.1016/j.jpowsour.2004.12.060
  3. Tooi, M., 2005, "Development of Molten Carbonate Fuel Cell in Japan," Proceedings of 2005 Fuel Cell Seminar, November 14-18, 2005, Plam Spring, CA.
  4. Piero, L., Roberto, B. and Umberto, D., 2003, "Analysis and Optimization of Hybrid MCFC Gas Turbines Plants," Journal of Power Sources, Vol. 118, pp. 108-117. https://doi.org/10.1016/S0378-7753(03)00068-5
  5. Manfred, B. and Gerhard, H., 2002, "Operating Experience with a 250 $kW_el$ Molten Carbonate Fuel Cell (MCFC) Power Plant," Journal of Power Sources, Vol. 105, pp. 216-221. https://doi.org/10.1016/S0378-7753(01)00942-9
  6. Urbani, F., Freni, S., Galvagno, A. and Chiodo, V., 2011, "MCFC Integrated System in a Biodiesel Production Process," Journal of Power Sources, Vol. 196, pp. 2691-2698. https://doi.org/10.1016/j.jpowsour.2010.11.024
  7. Song, K. N. and Hong, S. D., 2013, "Evaluation of High-Temperature Structural Integrity Using Lab-Scale PCHE Prototype," Trans. Korean Soc. Mech. Eng. A, Vol. 37, pp. 1189-1194. https://doi.org/10.3795/KSME-A.2013.37.9.1189
  8. Choi, J. H., Kim, D. S. and Kwak, B. H., 2014, "Performance Prediction and Economic Assessment of Atmospheric Pressure MCFC/Gas Turbine Hybrid System with Indirect Turbine Firing," Trans. Korean Soc. Mech. Eng. B, Vol. 38, pp. 31-39. https://doi.org/10.3795/KSME-B.2014.38.1.031
  9. Lim, H. J., Lee, T. S., Oh, M. H., Kim, H. Y. and Kim, T. J., 2010, "Corrosion Properties of Fuelcell Metallic Bipolar Plate by Metal Surface Treatment," Proceedings of 2010 The Korean Society for New and Renewable Energy, pp.130.2-130.2
  10. Selim, A. and Peilin, Z., 2006, "A Comparative Study on Life Cycle Analysis of Molten Carbon Fuel Cells and Diesel Engines for Marine Application," Journal of Power Sources, Vol. 158, pp. 188-199. https://doi.org/10.1016/j.jpowsour.2005.07.076
  11. Kim, H. P., Hwang, S. S., Rhee, C. K., Kim, K. M. and Kim, J. S., 1998, "A Review of Sensitization of Stainless Steel, " J. Corros. Sci. Soc. Of Korea, Vol. 27, pp. 52-64.
  12. Kim, B. T. and Baek, K. K., 1988, "A Study on Evaluation of Degree of Sensitization in AISI 304 Stainless Steel and Its Welding Heat Affected Zone by an Electrochemical Method," J. Corros. Sci. Soc. of Korea, Vol. 17, pp. 99-109.
  13. Nam, K. W., Ahn, S. H. and Kim, J. W., 2005, " Nondestructive Evaluation in Materials Using Time-Frequency Analysis Methods," Key Engineering Materials, Vols. 297-300, pp. 2090-2095. https://doi.org/10.4028/www.scientific.net/KEM.297-300.2090