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

• Published in: Journal of Zhejiang University. A. Science Vol. 6; no. 7; pp. 670 - 675
• Main Author: 陆国栋 周强泰 田茂诚 程林 俞小莉
• Format: Journal Article
• Language: English
• Published: 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 01.07.2005
• Subjects: CFB; 热传递; 皱纹管; 空气交叉流程; 空气预热器; Air preheater; Linearly arranged tube bundles; Cross-flow; Spirally corrugated tube; CFB
• ISSN: 1673-565X; 1862-1775
• DOI: 10.1631/jzus.2005.A0670

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）.