Numerical study of heat transfer in a finned double pipe heat exchanger

Shiva Kumar, K. Vasudev Karanth, Krishna Murthy

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In the present study the performance of a concentric tube heat exchanger is analyzed with passive heat transfer technique. The performance of the heat transfer process in a given heat exchanger is determined for three different longitudinal fin profiles, rectangular, triangular and parabolic. Numerical analysis was carried out in a parallel flow double pipe heat exchanger for the above profiles for varied mass flow conditions both in the inner and outer tube. Base width and height of the fin were kept constant for all the three types. Simulated results indicated an enhancement in the heat transfer rate for a finned tube compared to the unfinned one. Among the different configurations, fin with rectangular profile showed marginal improvement over triangular and concave parabolic profiles in terms of heat transfer characteristics. For a constant value of mcc = 0.02kg/s and varying mch, rectangular finned tubes showed an average improvement of 6.1% over the triangular and 9.2% over parabolic finned tube. Similarly For a constant value of mch = 0.02kg/s and varying mcc, it showed an improvement by 2 and 5% over the triangular tube and parabolic finned tube respectively Fins with concave parabolic profiles exhibited minimum pressure drop and has reduced by 38% and 65% compared to the triangular and rectangular finned tube.

Original languageEnglish
Pages (from-to)43-54
Number of pages12
JournalWorld Journal of Modelling and Simulation
Volume11
Issue number1
Publication statusPublished - 01-01-2015

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Heat Exchanger
Heat exchangers
Heat Transfer
Numerical Study
Tube
Pipe
Heat transfer
Triangular
Parallel flow
Tubes (components)
Pressure drop
Numerical analysis
Pressure Drop
Concentric
Numerical Analysis
Enhancement
Profile
Configuration

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Engineering(all)

Cite this

Kumar, Shiva ; Vasudev Karanth, K. ; Murthy, Krishna. / Numerical study of heat transfer in a finned double pipe heat exchanger. In: World Journal of Modelling and Simulation. 2015 ; Vol. 11, No. 1. pp. 43-54.
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Numerical study of heat transfer in a finned double pipe heat exchanger. / Kumar, Shiva; Vasudev Karanth, K.; Murthy, Krishna.

In: World Journal of Modelling and Simulation, Vol. 11, No. 1, 01.01.2015, p. 43-54.

Research output: Contribution to journalArticle

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AB - In the present study the performance of a concentric tube heat exchanger is analyzed with passive heat transfer technique. The performance of the heat transfer process in a given heat exchanger is determined for three different longitudinal fin profiles, rectangular, triangular and parabolic. Numerical analysis was carried out in a parallel flow double pipe heat exchanger for the above profiles for varied mass flow conditions both in the inner and outer tube. Base width and height of the fin were kept constant for all the three types. Simulated results indicated an enhancement in the heat transfer rate for a finned tube compared to the unfinned one. Among the different configurations, fin with rectangular profile showed marginal improvement over triangular and concave parabolic profiles in terms of heat transfer characteristics. For a constant value of mcc = 0.02kg/s and varying mch, rectangular finned tubes showed an average improvement of 6.1% over the triangular and 9.2% over parabolic finned tube. Similarly For a constant value of mch = 0.02kg/s and varying mcc, it showed an improvement by 2 and 5% over the triangular tube and parabolic finned tube respectively Fins with concave parabolic profiles exhibited minimum pressure drop and has reduced by 38% and 65% compared to the triangular and rectangular finned tube.

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