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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

FOULING OF A CYLINDRICAL OBSTACLE PLACED IN AN AIR STREAM

Get access (open in a dialog) DOI: 10.1615/IHTC7.2280
pages 301-306

Sinopsis

The characteristics of carbon-black particles deposition on a cylindrical obstacle placed in a particles-laden air stream were studied. Accumulation of the deposit with time exhibited asymptotic behavior, as commonly observed in particulate fouling of tubular heat-exchangers. However, velocity exerted only a weak effect on the magnitude of the asymptotic deposit, and the effect of increasing the carbon-particle flux at constant velocity was to augment the asymptotic deposit at a rapidly diminishing rate. The asymptotic deposit was found to depend on particles concentration, rather than velocity and carbon-particle flux. To explain the above results, a model inspired by gas-adsorption theory is proposed, based on the concept that the deposit builds up as a non-uniform structure of partially-occupied layers.