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Science China Technological Sciences

, Volume 61, Issue 4, pp 506–515 | Cite as

Numerical investigation on gas flow heat transfer and pressure drop in the shell side of spiral-wound heat exchangers

  • QiXiong Tang
  • GaoFei Chen
  • ZhiQiang Yang
  • Jun Shen
  • MaoQiong Gong
Article
  • 66 Downloads

Abstract

As a critical facility, spiral-wound heat exchanger (SWHE) has been widely used in many industrial applications. A computational fluid dynamics (CFD) model was employed with the smallest periodic element and periodic boundary conditions to examine the characteristics of the shell side of SWHE. Numerical simulation results show that the heat transfer coefficients around the tube initially increase and subsequently decrease with radial angle because of the influence of backflow and turbulent separation. The mean absolute deviation between simulated heat transfer coefficients and measured values for methane, ethane, nitrogen and a mixture (methane/ethane) is within 5% when Reynolds number is over 30000. For the pressure drop, the simulated values are smaller than the measured values, and the mean absolute deviation is within 9%. Numerical simulation results also indicate that the pressure drop and heat transfer coefficients on the shell side of SWHE decrease as the winding angle of the tubes increases. Considering the effect of winding angle on pressure drops and heat transfer coefficients, the modified correlations of Nusselt number Nu = 0.308Re0.64Pr0.36(1 + sinθ)-1.38 and friction factor f = 0.435Re-0.133(sinθ)-0.36, are proposed. Comparing with the experimental data, the maximum deviations for heat transfer coefficients and pressure drops are less than 5% and 11% respectively.

Keywords

spiral-wound heat exchangers CFD heat transfer pressure drop shell side 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • QiXiong Tang
    • 1
    • 2
  • GaoFei Chen
    • 1
  • ZhiQiang Yang
    • 1
    • 2
  • Jun Shen
    • 1
  • MaoQiong Gong
    • 1
    • 2
  1. 1.Key Laboratory of Cryogenics, Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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