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A Study on the Performance of a Cross-Flow Beat Exchanger by Tube Array Change  

Jeon Yong-Han (Graduate School, Inha University)
Kim Nam-Jin (Department of Energy Engineering, Cheju National University)
Kim Chong-Bo (Department of Mechanical Engineering, Inha University)
Publication Information
Journal of Energy Engineering / v.15, no.1, 2006 , pp. 28-34 More about this Journal
Abstract
The convective heat transfer on the outer surface of tube arrays perpendicular to the flow direction was experimentally investigated. The test sections which include the aligned and staggered arrangements were made and the local heat transfer coefficients on the outer surface of the tube were measured after the Hour has been fully developed. The results showed that the local heat transfer coefficients of the staggered arrangement, which has transverse pitch of 0.075 m and longitudinal pitch of 0.08 m, were about 15% greater than that of the aligned arrangement. Also, the overall mom Nusselt number of the former was greater thu that of the latter.
Keywords
Aligned arrangement; Staggered arrangement; Heat transfer; Reynolds number; Nusselt number;
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