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Enhancing Energy Saving in Air Cooling Devices by Intensifying External Heat Transfer

  • RESEARCH, DESIGN, NUMERICAL ANALYSES, AND OPERATING EXPERIENCE
  • PROCESSES AND EQUIPMENT OF CHEMICAL AND OIL-AND-GAS TECHNOLOGIES
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Chemical and Petroleum Engineering Aims and scope

The aerodynamic processes of heated air in the ventilation shaft installed above the heat transferring bundle of bimetallic finned tubes are studied. The regions of suppressed natural, steady, and unsteady mixed air convection in the bundle depending on the degree of narrowing of the outlet section of the ventilation shaft are determined. The maximum Nusselt numbers for multi-row bundles and their corresponding optimum parameters of the degree of narrowing of the outlet section of the ventilation shaft are determined. A method is proposed for determining the Reynolds numbers and the average air velocity during free convection for contracted smooth and finned tube bundles, which will allow optimization of heat transfer processes. The practical effectiveness of single- and two-row bimetallic finned tube bundles with a finning factor φ = 21 and an intertube spacing of 58 mm in air cooling and similar aircooled heat exchangers having a ventilation shaft is scientifically proved.

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Authors and Affiliations

  1. Belarusian State Technological University (Belorusskii Gosudarstvennyi Tekhnlogicheskii Universitet), Minsk, Belarus

    G. S. Marshalova, A. B. Sukhotskii & V. B. Kuntysh

Authors
  1. G. S. Marshalova
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  2. A. B. Sukhotskii
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  3. V. B. Kuntysh
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Correspondence to G. S. Marshalova.

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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 56, No. 2, pp. 3−7, February 2020.

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Marshalova, G.S., Sukhotskii, A.B. & Kuntysh, V.B. Enhancing Energy Saving in Air Cooling Devices by Intensifying External Heat Transfer. Chem Petrol Eng 56, 85–92 (2020). https://doi.org/10.1007/s10556-020-00743-6

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  • DOI: https://doi.org/10.1007/s10556-020-00743-6

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