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An Experimental Study of Fouling Effect on the Heat Transfer Around a Tube in Staggered Tube Banks
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 Title & Authors
An Experimental Study of Fouling Effect on the Heat Transfer Around a Tube in Staggered Tube Banks
Kim, Min-Su; Baek, Byeong-Jun; Park, Bok-Chun;
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 Abstract
An experimental study has been performed to investigated the forced convection heat transfer characteristics of 6 circular cylinders in staggered arrangement in a cross flow of air. The water scale deposited on condenser wall of power plant was used to investigate the effect of roughness of scaled surfaces. The relative roughness*average diameter of scale/cylinder diameter) was in a range of k/d=0.0066, 0.0111, 0.0167, 0.0222 and 0.0278. The cylinder spacings(L/d) varies from 1.5 to 4.0 where L denote the cylinder spacings along and normal to the upstream uniform flow direction. The Reynolds number was varied in a range of 10, 000 Re 50,000. The local and mean Nusselt numbers were investigated as a function of scale roughness, the cylinder spacing and Reynolds number. The results are compared with those of clean cylinder and inline tube bank, subsequently the mean fouling resistance over the entire circumference was estimated from those results as a function of scale roughness, the cylinder spacing and Reynolds number.
 Keywords
Fouling Effect;Fouling Resistance;Staggerd Tube Bank;Scale Thickness;Separation Point;
 Language
Korean
 Cited by
1.
A Study on Heat Transfer Characteristics for Staggered Tube Banks in Cross-Flow,;;;

Journal of Mechanical Science and Technology, 2007. vol.21. 3, pp.505-512
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