Heat transfer of staggered bundles of flat oval tubes in transverse flow

Authors

  • Вадим Анатолійович Кондратюк National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine https://orcid.org/0000-0001-5035-311X
  • Олександр Михайлович Терех National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine
  • Олександр Володимирович Баранюк National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine https://orcid.org/0000-0001-6008-6465
  • Євген Миколайович Письменний National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine https://orcid.org/0000-0001-6403-6596

DOI:

https://doi.org/10.15587/1729-4061.2015.37318

Keywords:

tube, profile, flat-oval, oval, round, flow, heat transfer, intensity, staggered, transverse

Abstract

The paper deals with investigating convective heat transfer for virtually unstudied staggered bundles of flat-oval tubes at their transverse air flow around. Experiments were conducted in an open-circuit wind tunnel with rectangular cross-section in the range of Reynolds numbers change from 2000 to 30000. In the course of experiments, the average convective heat transfer coefficients were determined. When processing and analyzing experimental data and dependencies of Nusselt numbers on Reynolds numbers of bundles of flat-oval tubes, much attention was paid to factors, which may affect the heat transfer intensity. During the experiments, several of these factors: operation factor - flow rate W, geometrical factors: back pitch between tubes S1, long pitch S2, the ratio of longitudinal to transverse tube size (profile elongation) d2/d1 were identified.

Author Biographies

Вадим Анатолійович Кондратюк, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

Junior Researcher

Chair of nuclear power plants and engineering thermophysics

Олександр Михайлович Терех, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

PhD, Senior Researcher

Chair of nuclear power plants and engineering thermophysics

Олександр Володимирович Баранюк, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

PhD, Senior Lecturer

Chair of nuclear power plants and engineering thermophysics

Євген Миколайович Письменний, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

Doctor of Technical Sciences, professor

Head of the department of nuclear power plants and engineering thermophysics

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Published

2015-02-23

How to Cite

Кондратюк, В. А., Терех, О. М., Баранюк, О. В., & Письменний, Є. М. (2015). Heat transfer of staggered bundles of flat oval tubes in transverse flow. Eastern-European Journal of Enterprise Technologies, 1(8(73), 43–48. https://doi.org/10.15587/1729-4061.2015.37318

Issue

Vol. 1 No. 8(73) (2015): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

License

Copyright (c) 2015 Олександр Михайлович Терех, Вадим Анатолійович Кондратюк, Олександр Володимирович Баранюк, Євген Миколайович Письменний

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