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Experimental Investigation of a Nonstandard Layout of a Multirow Horizontal Finned-Tube Bundle with an Exhaust Shaft

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Journal of Engineering Physics and Thermophysics Aims and scope

In view of the fact that heat exchangers made of bimetallic finned tubes have found wide application in contemporary technology for the regime of natural convection, it became necessary to take into account the radiative component that may be appreciable in the total heat flux and that depends on the geometric parameters of the bundle and characteristics of the surface studied. It is suggested in the article to raise the heat power of a multirow finned bundle by applying a nonstandard layout of tubes by placing their upper row above the exhaust shaft, with the remaining ones under the shaft. From the results of experimental investigations and of a comparative analysis of heat transfer by radiation and convection of a multirow finned-tube heat transfer bundle with an exhaust shaft and different layouts of tubes, it is shown that the nonstandard layout of finned tubes of a multirow heat exchanging bundle makes it possible to increase the radiant heat flux by 1.4–1.5 times. In this case, the total heat transfer rate of the bundle with the use of a nonstandard layout is increased approximately by 5%. It is shown that it is worthwhile to optimize the layout of the bundle when the fraction of the radiant flux in the total heat flow exceeds 10%.

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Authors and Affiliations

  1. Belarusian State Technological University, 13a Sverdlov Str., 220050, Minsk, Belarus

    A. B. Sukhotskii, E. S. Danil’chik & G. S. Marshalova

Authors
  1. A. B. Sukhotskii
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  2. E. S. Danil’chik
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  3. G. S. Marshalova
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Correspondence to A. B. Sukhotskii.

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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 94, No. 4, pp. 1101–1106, July–August, 2021.

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Sukhotskii, A.B., Danil’chik, E.S. & Marshalova, G.S. Experimental Investigation of a Nonstandard Layout of a Multirow Horizontal Finned-Tube Bundle with an Exhaust Shaft. J Eng Phys Thermophy 94, 1079–1084 (2021). https://doi.org/10.1007/s10891-021-02385-8

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  • DOI: https://doi.org/10.1007/s10891-021-02385-8

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