Heat-Aerodinamic Efficiency of Helical Tubes

Authors

DOI:

https://doi.org/10.20535/1810-0546.2017.1.83498

Keywords:

Helical tubes, Equaldeveloped surface, Chess packages, Efficiency

Abstract

Background. Research and development of new highly efficient heat exchange surfaces.

Objective. Determination of the heat-aerodynamic efficiency of the new equally developed surfaces in the form of helical tubes packets.

Methods. Experimental and numerical study of heat transfer and aerodynamics of helical tubes chess packages.

Results. The specific heat flux which is taken away from packages of helical tubes is 30–65 % bigger than a specific heat flux which is taken away from the corresponding (respective) packages of smooth tubes at equal costs for pumping the heat transfer agent. The maximal sizes are reached for packages of type 3 tubes at  \[\sigma _{2}=1,46.\]  

Conclusion. Application of helical tubes allows increasing the intensity of heat exchange with moderate growth of an aerodynamic drag therefore it is possible to improve mass-dimensional characteristics of heat exchange devices significantly.

Author Biographies

Eugeniy M. Pis’mennyi, NTUU “Igor Sikorsky KPI”

Doctor of sciences, professor, dean of the Heat-and-Power Engineering Department

Sergiy A. Reva, NTUU “Igor Sikorsky KPI”

Postgraduate student, chair of nuclear power plants and engeneering thermophysics

Alexandr M. Terekh, NTUU “Igor Sikorsky KPI”

PhD, senior researcher, chair of nuclear power plants and engineering thermophysics

Oleksandr V. Baraniuk, NTUU “Igor Sikorsky KPI”

PhD, senior lecturer, chair of nuclear power plants and engineering thermophysics NTUU “Igor Sikorsky KPI”

References

I.L. Yuraschik et al., Utilization of the Heat of Driving Gas – Turbine Installations. Kyiv, Ukraine: Tehnika, 1991 (in Russian).

Е.N. Pis’menniy, “Ways for improving the tubular heaters used in gas turbine units”, Thermal Eng., vol. 59, no. 6, pp. 485–490. doi: 10.1134/S0040601512060080

E.K. Kalinin et al., Effective Surfaces of Heat Exchange. Moscow, Russia: Energoatomizdat, 1998 (in Russian).

V.M. Antufev, Efficiency of Various Forms of Convective Surfaces of Heating. Moscow, Leningrad, SU: Energy, 1966 (in Russian).

S.A. Reva et al., “Heat transfer of few bundles of screw shaped tubes”, Vostochno-Evropejskij Zhurnal Peredovyh Tehnologij, vol. 3, no. 8, pp. 54–60, 2013 (in Ukrainian). Available: http://journals.uran.ua/eejet/article/view/14837/12639

E.N. Pis'menniy, “Heat exchange tubes”, Ukr. Patent 67783, March 12, 2012 (in Ukrainian).

L.V. Demchuk et al., “Heat-aerodynamic efficiency of helical tubes with equal developed surface”, Vostochno-Evropejskij Zhurnal Peredovyh Tehnologij, vol. 5, no. 8, pp. 26–30, 2011 (in Ukrainian). Available: http://journals.uran.ua/eejet/article/view/1274/1175

Aerodynamic Calculation of Boilers: Normative Method, S.I. Mochan, Ed. Moscow. SU: Energy, 1977 (in Russian).

Termal Calculation of Boilers: Normative Method, N.V. Kuznetsov, Ed. Moscow: SU: Energy, 1973 (in Russian).

A.A. Halatov, Heat Exchange and Hydrodynamics Near the Surface of Deepenings (Holes). Kyiv, Ukraine: Institute ofEngineering Thermophysics of the National Academy of Sciences of Ukraine, 2005 (in Ukrainian).

T.V. Donik et al., “Thermohydraulic efficiency of heat exchange and the quality of intensifiers of torsional type”, Vostochno-Evropejskij Zhurnal Peredovyh Tehnologij, vol. 3, no. 10, pp. 43–46, 2012 (in Ukrainian). Available: http://journals.uran.ua/ eejet/article/view/4183/3946/

V.V. Kuznetsov et al., “Heat and hydrodynamic efficiency of bunches of elliptic pipes”, Vostochno-Evropejskij Zhurnal Peredovyh Tehnologij, no. 3 (45), pp. 53–56, 2010 (in Ukrainian). Available: http://journals.uran.ua/eejet/article/view/2797/2603

E.N. Pis'menniy, Heat Transfer and Aerodynamics of Package Transversely Finned Tubes. Kyiv, Ukraine: Alterpress, 2004 (in Russian).

Downloads

Published

2017-04-27

Issue

No. 2 (2017): Engineering

Section

Art

License

Copyright (c) 2017 NTUU KPI Authors who publish with this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

    2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

    3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work