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Heat Transfer Research
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ISSN Print: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v37.i3.70
pages 259-270

Heat Exchangers with Flow Swirling by Twisted Tubes and Estimation of Their Thermohydraulic Efficiency

Boris V. Dzyubenko
Moscow Aviation Institute (State Technical University), 4 Volokolamskoe Highway, Moscow, 125993, Russia
Guenrikh A. Dreitser
Department of Aviation-Space Thermal Techniques, Moscow Aviation Institute, Volokolamskoe shosse, 4, Moscow, 125993, Russia
A. I. Yakimenko
Moscow Aviation Institute (State Technical University), Moscow, Russia

ABSTRACT

Heat-exchange apparatuses forming part of power plants, production lines, and various-purpose processes, may constitute, by their mass and overall dimensions, a significant fraction of the total mass of the entire equipment. Therefore, there arises the necessity to enhance heat transfer in such apparatuses and to increase their output parameters. Among the well-known methods of heat-transfer enhancement a special place is occupied by the method of flow swirling by twisted tubes which ensures heat-transfer enhancement in both flow past banks of tubes and flow inside twisted tubes. Dense packing of twisted tubes in a bank with the tubes contacting at some points (at a maximum dimension of the tube profiles), allows one to create a more compact heat exchanger than in the case of round tubes as well as to ensure its vibration strength.


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