Heat transfer of few row bundles of screw-shaped tubes

Authors

  • Сергій Анатолійович Рева National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine
  • Валерій Андрійович Рогачов National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine
  • Олександр Михайлович Терех National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine
  • Ольга Валентинівна Алфьорова National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.14837

Keywords:

tube, bundle, few row, helical surfaces, heat transfer, calculation

Abstract

The article is devoted to assessing the impact of a number of transverse rows of tubes on heat transfer in heat exchangers with helical tubes in order to create a generalized dependence for calculating the correction factor that takes into account the impact of transverse rows of helical tubes z2  on heat transfer of bundles.

The studies of the convective heat transfer of the staggered bundles of helical tubes with cross flow of air were carried out in a pilot plant, represented by the open-type wind tunnel of rectangular cross section in the range of the Reynolds numbers from 5,000 to 70,000.

The article describes the generalized dependence to calculate the factor that takes into account the impact of the transverse rows of helical tubes on heat transfer of the bundles. The findings showed an increase of heat intensity during the transition from the first to the second and the third rows of the bundle, which is explained by the increase of the degree of turbulence of the flow as it travels deep into the bundle. To calculate the correction factor for few row bundles of helical tubes it is recommended to use the dependence obtained for the staggered bundles of round tubes with washer and helical ribbing in case of S1/S2> 2.

The studies can be used to select the solutions when designing new heat exchangers of heat exchange elements in the form of helical tubes, used in air heaters- regenerators of gas turbine installations.

The results can form the basis of thermal calculations when designing new heat exchangers of helical tubes.

Author Biographies

Сергій Анатолійович Рева, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

Magistrant

Chair of nuclear power plants and engineering thermophysics

Валерій Андрійович Рогачов, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

PhD, associate professor

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

Ольга Валентинівна Алфьорова, National technical university of Ukraine "Kiev Polytechnic Institute" Pobedy ave, 37, Kiev, Ukraine 03056

Researcher

Research & Development Institute of Telecommunications

References

  1. Кунтыш, В.Б. Тепловой и аэродинамический расчеты оребренных теплообменников воздушного охлаждения [Текст]/ В.Б. Кунтыш, Н.М. Кузнецов. – С-Пб.: Энергоатомиздат. Санкт-Петерб. отд., 1992. – 280 с.
  2. Pis’mennyi, E.N. Ways for Improving the Tubular Heaters Used in Gas Turbine Units/ E.N. Pis’mennyi [Текст]// Thermal Engineering . – 2012. – V.59. - №6. – pp.485-490.
  3. Патент на корисну модель №67783 Україна, МПК F28F1/08. Теплообмінна труба/Є.М. Письменний, О.М. Терех, О.І Руденко, О.П. Ніщик, О.В. Баранюк; заявник та володар патенту на корисну модель НТУУ ”КПІ” – u201108293; заявл. 01.07.2011; опубл. 12.03.2012. Бюл. №5.
  4. Письменный, Е.Н. Конвективный теплообмен поперечно-омываемых шахматных пакетов плоскоовальных труб [Текст]/ Е.Н. Письменный, В.А. Кондратюк, Ю.В. Жукова, А.М. Терех// Восточно-Европейский журнал передовых технологий. – 2011. – №2/8 (50). – С. 4-8.
  5. Юдин, В.Ф. Теплообмен поперечно оребренных труб [Текст]/ В.Ф. Юдин – Л.: Машиностроение, 1982. – 189 с.
  6. Письменный, Е.Н. Теплообмен и аэродинамическое сопротивление малорядных пучков плоско-овальных труб с неполным оребрением [Текст]/ Е.Н. Письменный, А.М. Терех, А.В. Баранюк, В.Д. Бурлей// Промышленная теплотехника. – 2010. – Т.32. – №5. – С. 34-41.
  7. Письменный, Е.Н. Расчет конвективных поперечно-оребренных поверхностей нагрева [Текст]/ Е.Н. Письменный – Киев: Альтерпрес, 2003. – 184 с.
  8. Письменный, Е.Н. Теплообмен и аэродинамика пакетов поперечно-оребренных труб [Текст]/ Е.Н. Письменный – Киев: Альтерпрес, 2004. – 244 с.
  9. Тепловой расчет котельных агрегатов: нормативный метод/под ред. Н.В. Кузнецова. – М.: Энергия, 1973. – 296 с.
  10. Тепловой расчет котлов: нормативный метод. Издание 3-е, переработанное и дополненное. Издательство НПО ЦКТИ, СПб. – 1998. – 256 с.
  11. Kuntysh, V.B., Kuznetsov N.M. (1992). Thermal and aerodynamics calculations of finned air-cooled exchanger. S-Petersburg, Russia: Energoatomizdat.
  12. Pis’mennyi, E.N. (2012). Ways for Improving the Tubular Heaters Used in Gas Turbine Units. Thermal Engineering, V.59 (6), 485-490.
  13. Pis’mennyi, E., Terekh, A., Rudenko, A., Nishchik, A., & Baranyuk, A. (2011). The Heat Transfer Tube. Patent on an useful model № 67783, Bull. 20, Ukraine.
  14. Pis’mennyi, E.N., Kondratyuk, V.A., Zhukova, Y.V., & Terekh, A.M. (2011). Heat transfer of staggered bundles of flat-oval tubes in cross flow. Eastern-European Journal of Enterprise Technologies, 2/8 (50), 2-4.
  15. Udin, V.F. (1982). Heat transfer of finned tubes in crossflow. Leningrad, USSR: Machinebuild.
  16. Pismennyi, E.N., Terekh, A.M., Baranyuk, A.V., & Burlei, V.D. (2010). Heat Transfer and aerodynamic drag of few rows bundles of flat-oval tubes with incomplete fining. Industrial Heat Engineering, 32 (5), 34-41.
  17. Pismennyi, E.N. (2003). Calculation of convective transversal finned heat surfaces. Kiev, Ukraine: Alterpress.
  18. Pismennyi, E.N. (2004). Heat Transfer and aerodynamic drag of tubes bundles with transversal finns. Kiev, Ukraine: Alterpress.
  19. Thermal calculation of boiler plants (standard method) (1973). Ed. 2, edited by N.V. Kuznetsov. Moskow, USSR: Energy.
  20. Thermal calculation of boilers (standard method) (1998). Ed. 3, S-Petersburg, Russia: SPA CBTI.

Downloads

Published

2013-06-19

How to Cite

Рева, С. А., Рогачов, В. А., Терех, О. М., & Алфьорова, О. В. (2013). Heat transfer of few row bundles of screw-shaped tubes. Eastern-European Journal of Enterprise Technologies, 3(8(63), 54–56. https://doi.org/10.15587/1729-4061.2013.14837

Issue

Vol. 3 No. 8(63) (2013): Energy-saving technologies

Section

Energy-saving technologies and equipment

License

Copyright (c) 2014 Сергій Анатолійович Рева, Валерій Андрійович Рогачов, Олександр Михайлович Терех, Ольга Валентинівна Алфьорова

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.

A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.