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Frontiers of Mechanical Engineering

Front. Mech. Eng.    2009, Vol. 4 Issue (4) : 355-362     https://doi.org/10.1007/s11465-009-0065-2
Research articles |
Creep of brazed plate-fin structures in high temperature compact heat exchangers
Shantung TU1,Guoyan ZHOU1, 2,
1.Key Laboratory of Safety Science of Pressure Equipment, MOE, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China; 2.2009-11-03 23:20:53;
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Abstract In recent years, the need for high temperature heat exchangers to improve the efficiency of power and chemical conversion systems has been growing. However, the creep design of the high temperature compact heat exchangers has been a primary concern because the working temperature can be well above the creep limit of the materials. To establish the high temperature design criterion for compact heat exchangers, creep behavior of the plate-fin structures and brazed joints are investigated in this paper. The time-dependent deformation and bending stress of the plate-fin structures are obtained analytically by simplifying the fins to elastic springs. The creep damage evolution inside the brazed joint is studied by coupling the finite element method with a damage constitutive equation. The significant effect of creep property mismatch in the brazed joint on the creep strength is demonstrated.
Keywords compact heat exchanger      creep      damage      brazing joint      
Issue Date: 05 December 2009
 Cite this article:   
Shantung TU,Guoyan ZHOU,管理员. Creep of brazed plate-fin structures in high temperature compact heat exchangers[J]. Front. Mech. Eng., 2009, 4(4): 355-362.
 URL:  
http://journal.hep.com.cn/fme/EN/10.1007/s11465-009-0065-2
http://journal.hep.com.cn/fme/EN/Y2009/V4/I4/355
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