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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.7 P.670-675

http://doi.org/10.1631/jzus.2005.A0670


Heat transfer characteristics of air cross-flow for in-line arrangement of spirally corrugated tube and smooth tube bundles


Author(s):  LU Guo-dong, ZHOU Qiang-tai, TIAN Mao-cheng, CHENG Lin, YU Xiao-li

Affiliation(s):  School of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   lgd0039007@sohu.com

Key Words:  CFB, Air preheater, Spirally corrugated tube, Linearly arranged tube bundles, Cross-flow



Abstract: 
An experimental study on heat transfer and resistance coefficients of linearly arranged smooth and spirally corrugated tube bundles in cross-flow was performed. The heat transfer and resistance coefficients are presented in this paper with transverse and longitudinal tube-pitch and tube geometries taken into account. The experiment’s results can provide technical guidelines for application to horizontal air preheater with arranged in-line spirally corrugated tube bundles, especially to the air preheater for CFBCBs (Circulating Fluidized Bed Combustion Boilers).

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2014-05-06 18:31:31

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