[01] Mahsa Shahbazi, Department of Chemical Engineering, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran. [02] Farshad Farahbod, Department of Chemical Engineering, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.

The insolubility number is the y-axis intercept of a line drawn through the two points. The solubility blending number is calculated by the equation given in obtained results. In other words; Determination of I_N, insolubility number, and S_BN, solubility blending number, for Forties and Souedie crude oils is investigated in this paper. The objective of the research is to represent a novel arrangement of conical three dimensional rough tubes (FS3D) for heat transfer coefficient enhancement. Experiments were performed with 316 stainless steel tubes of FS3D roughness and hot crude oil was circulated in constant heat flux condition in the related set up. The pressure drop is measured in this set up and compared with the pressure drop in a smooth tube with the same operating conditions. The heat transfer coefficient is one of essential parameters for design of heat transfer equipment’s and in this experimental work this is investigated for an Iranian crude oil in the FS3D rough tube.

Fouling, Oil, Solid, Refinery, Asphaltene

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