Author : Vinous M. Hameed, Basim O. Hasan and Fadya F. Mohammed

Crystallization fouling experiments where preformed for double pipe heat exchanger under counter flow condition in which sodium sulfate (Na2SO4) at saturation condition and constant bulk temperature of (32°C) where made to flow in the shell at different Reynolds number (Reh = 5000-12000), cold water flowing the pipe at constant temperature of (12°C) at different Reynolds numbers (Rec = 11000-37000).The overall heat transfer coefficient were determined from the measurement of the inlet and outlet temperature of the system at the given different velocities. Glass beads (3mm∅) at two different concentrations (0.625-1.25g/l) where introduced to the process fluid (salt solution) to mitigate fouling. The experimental results showed that the enhancing effect of glass beads on heat transfer is more pronounced at lower velocities and lower concentration.

Keywords: Crystallization fouling, Heat Exchanger, Heat transfer coefficient, Glass bead, Mitigation

Article published in International Journal of Current Engineering and Technology, Vol.5, No.6 (Dec-2015)