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ISSN 打印: 1064-2285
ISSN 在线: 2162-6561

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DOI: 10.1615/HeatTransRes.v37.i2.20
pages 103-112

Heat Transfer and Aerodynamic Drag of Banks of Smooth Tubes with Surfaces of Different Geometries in a Crossflow

V. T. Buglaev
Bryansk State Technical University, Bryansk, Russia
A. A. Anisin
Bryansk State Technical University, Bryansk, Russia
A. K. Anisin
Bryansk State Technical University, Bryansk, Russia

ABSTRACT

The possibility of enhancing heat transfer from a symmetrical inline 1.45 × 1.45 bank of smooth tubes with the outer diameter d1 = 11 mm in a crossflow with smooth cylindrical turbulizing rods of diameter d2 = 1.2−4.5 mm disposed inside the bank successively at the centers of squared tubular cells is analyzed. The implementation of the proposed arrangement of tubular elements in the form of a combined heat-transfer surface of tube banks of different outer diameters d1 = 11 mm and d2 = 6 mm with a triangular one with d1 = 11 mm and d2 = 8 mm with a linear arrangement and experimental thermal and aerodynamic characteristics obtained on their basis point to the expediency of practical application of the proposed approach to heat transfer enhancement and increase of the energy efficiency of tubular heat exchanging apparatus and facilities. Various variants of the design of a tubular surface in a crossflow are presented.


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