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Heat Transfer by Natural Convection of Vertical Finned Tubes of Drying Kilns Calorifers

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V.B. Kuntysh, A.V. Pozdnyakova, V.I. Melekhov

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UDС

536.25:674.047

DOI:

Abstract

It is found out that the increase of the step of finned tubes from 58 to 70 mm is accompanied by the growth of heat transfer in 1.34 times that reaches values of heat transfer for single vertical tube and remains unchanged at high values of the tube step. The results of experiments are generalized by the criteria equations valid in the interval of the Reley number (0.55…5.0) · 108.

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Heat Transfer by Natural Convection of Vertical Finned Tubes of Drying Kilns Calorifers

 

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