%K Crude oil; Heat exchangers, Different mechanisms; Different stages; Fouling mechanisms; Fouling mitigation; Fouling model; Operating condition; Threshold condition, Fouling %X Fouling in crude preheat train heat exchangers in refineries is a complex phenomenon. Crude oil fouling undergoes different mechanisms at different stages of preheating. Understanding the fouling mechanisms is essential in formulating appropriate fouling mitigation strategies. The use of the concept of threshold fouling conditions is one of the approaches for mitigating fouling through operating conditions. In this study, an attempt has been made to review the various fouling models available in literature, their advantages and limitations. © 2010 Asian Network for Scientific Information. %L scholars1373 %A U.B. Deshannavar %A M.S. Rafeen %A M. Ramasamy %A D. Subbarao %I Asian Network for Scientific Information %P 3167-3174 %J Journal of Applied Sciences %N 24 %R 10.3923/jas.2010.3167.3174 %D 2010 %O cited By 49 %V 10 %T Crude oil fouling: A review