| Civil & Mechanical Engineering |
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| Heat transfer characteristics of air cross-flow for in-line arrangement of spirally corrugated tube and smooth tube bundles |
| LU Guo-dong, ZHOU Qiang-tai, TIAN Mao-cheng, CHENG Lin, YU Xiao-li |
| School of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China; Department of Power Engineering, Southeast University, Nanjing 210096, China; School of Energy and Power Engineering, Shandong University, Jinan 250061, China |
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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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Received: 08 September 2004
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