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Parametric study and multiple correlations on air-side heat transfer and friction characteristics of fin-and-tube heat exchangers with large number of large-diameter tube rows

Xie, Gongnan LU ; Wang, Qiuwang and Sundén, Bengt LU (2009) In Applied Thermal Engineering 29(1). p.1-16
Abstract
In the present study, for industrial applications of large inter-coolers employed in multi-stage compressor systems the air-side laminar heat transfer and fluid flow characteristics of plain fin-and-tube heat exchangers with large number of tube rows and large diameter of the tubes arc investigated numerically through three-dimensional simulations based on the SIMPLE algorithm in Cartesian coordinates. The effects of parameters such as Reynolds number, the number of tube rows, tube diameter, tube pitches and fin pitch are examined, and the variations of heat transfer due to variations of fin materials are also observed. It is found that the heat transfer and fluid flow approach fully developed conditions when the number of tube rows is... (More)
In the present study, for industrial applications of large inter-coolers employed in multi-stage compressor systems the air-side laminar heat transfer and fluid flow characteristics of plain fin-and-tube heat exchangers with large number of tube rows and large diameter of the tubes arc investigated numerically through three-dimensional simulations based on the SIMPLE algorithm in Cartesian coordinates. The effects of parameters such as Reynolds number, the number of tube rows, tube diameter, tube pitches and fin pitch are examined, and the variations of heat transfer due to variations of fin materials are also observed. It is found that the heat transfer and fluid flow approach fully developed conditions when the number of tube rows is greater than six, and the tube diameter as well as the fin pitch have much more significant effects than the tube pitches, and the heat transfer of high-conductivity material is larger than that of low-conductivity material especially in the high Reynolds number regime. Due to the fact that the existing correlations are not valid for large tube diameters and number of tube rows, the heat transfer and flow friction of the presented heat exchangers are correlated in the multiple forms. The correlation is so obtained that it can be used for further studies such as performance prediction or geometrical optimization. (c) 2008 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Multiple correlation, Parametric study, Friction factors, Plain fin-and-tube heat exchanger, Heat transfer
in
Applied Thermal Engineering
volume
29
issue
1
pages
1 - 16
publisher
Elsevier
external identifiers
  • wos:000264532700001
  • scopus:53549106080
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2008.01.014
language
English
LU publication?
yes
id
49e059b0-fbcf-4baa-8b76-6414f019a42a (old id 1401656)
date added to LUP
2009-06-15 10:58:40
date last changed
2017-12-10 03:45:07
@article{49e059b0-fbcf-4baa-8b76-6414f019a42a,
  abstract     = {In the present study, for industrial applications of large inter-coolers employed in multi-stage compressor systems the air-side laminar heat transfer and fluid flow characteristics of plain fin-and-tube heat exchangers with large number of tube rows and large diameter of the tubes arc investigated numerically through three-dimensional simulations based on the SIMPLE algorithm in Cartesian coordinates. The effects of parameters such as Reynolds number, the number of tube rows, tube diameter, tube pitches and fin pitch are examined, and the variations of heat transfer due to variations of fin materials are also observed. It is found that the heat transfer and fluid flow approach fully developed conditions when the number of tube rows is greater than six, and the tube diameter as well as the fin pitch have much more significant effects than the tube pitches, and the heat transfer of high-conductivity material is larger than that of low-conductivity material especially in the high Reynolds number regime. Due to the fact that the existing correlations are not valid for large tube diameters and number of tube rows, the heat transfer and flow friction of the presented heat exchangers are correlated in the multiple forms. The correlation is so obtained that it can be used for further studies such as performance prediction or geometrical optimization. (c) 2008 Elsevier Ltd. All rights reserved.},
  author       = {Xie, Gongnan and Wang, Qiuwang and Sundén, Bengt},
  issn         = {1359-4311},
  keyword      = {Multiple correlation,Parametric study,Friction factors,Plain fin-and-tube heat exchanger,Heat transfer},
  language     = {eng},
  number       = {1},
  pages        = {1--16},
  publisher    = {Elsevier},
  series       = {Applied Thermal Engineering},
  title        = {Parametric study and multiple correlations on air-side heat transfer and friction characteristics of fin-and-tube heat exchangers with large number of large-diameter tube rows},
  url          = {http://dx.doi.org/10.1016/j.applthermaleng.2008.01.014},
  volume       = {29},
  year         = {2009},
}