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http://dx.doi.org/10.5855/ENERGY.2014.23.2.021

The Influence of the Surface Roughness on the Natural Convection on a Vertical Flat Plate  

Ohk, Seung-Min (Kyung Hee University)
Chung, Bum-Jin (Kyung Hee University)
Publication Information
Journal of Energy Engineering / v.23, no.2, 2014 , pp. 21-27 More about this Journal
Abstract
The influence of the surface roughness on the natural convection heat transfers of a vertical plate were measured experimently. Mass transfer experiments instead of heat transfer experiment were performed based on the analogy. The piecewise electrodes were adopted to measure the local-average Nusselt number. Prandtl number was 2,014 and height of the plate was 0.154m The test results for a smooth surface showed similar heat transfer rate with the Le Fevre heat transfer correlation for a vertical plate. The Nusselt number increased with the roughness Rz $0.5{\sim}14.1{\mu}m$. The test results were presented by a simple correlation.
Keywords
Vertical plate; Natural convection; Analogy; Electroplating system; Heat transfer;
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Times Cited By KSCI : 2  (Citation Analysis)
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