Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4794
Title: Effects of thermal dispersion on heat transfer in cross-flow tubular heat exchangers
Authors: Sano, Y.
Kuwahara, F.
Mobedi, Moghtada
Nakayama, A.
Keywords: Heat exchangers
Accurate estimation
Porous materials
Temperature field
Cross flows
Issue Date: Jan-2012
Publisher: Springer Verlag
Source: Sano, Y., Kuwahara, F., Mobedi, M., and Nakayama, A. (2012). Effects of thermal dispersion on heat transfer in cross-flow tubular heat exchangers. Heat and Mass Transfer, 48(1), 183-189. doi:10.1007/s00231-011-0865-x
Abstract: Effects of thermal dispersion on heat transfer and temperature field within cross-flow tubular heat exchangers are investigated both analytically and numerically, exploiting the volume averaging theory in porous media. Thermal dispersion caused by fluid mixing due to the presence of the obstacles plays an important role in enhancing heat transfer. Therefore, it must be taken into account for accurate estimations of the exit temperature and total heat transfer rate. It is shown that the thermal dispersion coefficient is inversely proportional to the interstitial heat transfer coefficient. The present analysis reveals that conventional estimations without consideration of the thermal dispersion result in errors in the fluid temperature development and underestimation of the total heat transfer rate. © Springer-Verlag 2011.
URI: http://doi.org/10.1007/s00231-011-0865-x
http://hdl.handle.net/11147/4794
ISSN: 0947-7411
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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