Title: Effect of number of tube rows on the air-side performance of crimped spiral fin-and-tube heat exchanger with a multipass parallel and counter cross-flow configuration
Authors: Pongsoi, Parinya
Pikulkajorn, Santi
Wang, Chi-Chuan
Wongwises, Somchai
機械工程學系
Department of Mechanical Engineering
Keywords: Crimped fin;Heat transfer;Heat exchanger;Air-water;Extended surface
Issue Date: 31-Jan-2012
Abstract: The air-side performance of crimped spiral fin and tube heat exchangers at high Reynolds number (3000-13,000) is investigated in this study. The test heat exchangers have a new type of multipass parallel and counter cross-flow water flow arrangement which is a combination of parallel cross-flow and counter cross-flow. The test samples are made from copper and aluminium with different number of tube rows (N-row = 2, 3, 4 and 5). The effects of number of tube rows and fin material on the heat transfer and friction characteristics are studied. The results show that no significant effect for either number of tube rows or fin materials on the heat transfer performance is found at high Reynolds number. In addition, the correlation of the air-side performances of this type of the heat exchangers at high Reynolds number is developed for industrial applications. (c) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2011.09.064
http://hdl.handle.net/11536/15674
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2011.09.064
Journal: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume: 55
Issue: 4
Begin Page: 1403
End Page: 1411
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