Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

PARTICULATE FOULING INSIDE TUBES HAVING ARC-SHAPED TWO-DIMENSIONAL ROUGHNESS BY A FLOWING SUSPENSION OF ALUMINUM OXIDE IN WATER

Get access (open in a dialog) DOI: 10.1615/IHTC9.1200
pages 139-144

Abstrakt

This paper describes the results of accelerated particulate fouling tests performed inside three repeated rib tubes and a smooth lube. The cross-section of the repeated ribs is arc-shaped. The tests were performed using aluminum oxide as a foulant material. The effect of roughness configuration and Reynolds number on the fouling behavior was investigated. The range of the roughness configuration is 0.015 ≤ c/D ≤ 0.030 and 10 ≤ p/e ≤ 20. The range of the Reynolds number is 14,000 ≤ Re ≤26,000.
The fouling resistances of the repeated rib tubes were higher than that of the smooth tube a low Reynolds number (Re = 14,000). Al high Reynolds number, (Re = 26,000), however, they were almost the same. The repeated rib tubes showed higher Reynolds number dependencies compared with the smooth tube. Within the lest range, the repealed rib lube fouling resistance increases as p/e increases and c/D decreases. The observed deposit distribution supports this trend.