“…The presence of asphaltenes on heat transfer surfaces further favors fouling of equipment because asphaltenes are more prone to attach to already coked surfaces than a clean metallic alloy surface (Asprino et al 2005). In order to mitigate problems caused by asphaltenes, a thorough understanding of the process of asphaltenes precipitation, flocculation and deposition and the factors affecting them is necessary (Macchietto et al, 2011;Mohammadi and Richon, 2008;Srinivasan, 2008;Wiehe, 2008). Factors, such as, temperature, pressure and crude oil composition have been observed to effect asphaltenes solubility and precipitation *Corresponding author address: Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskander, 31750 Tronoh, Perak, MALAYSIA.…”