The objective of the present study was to investigate the feasibility of using electronic anti-fouling (EAF) technology to control precipitation fouling in a spirally-ribbed tube commonly used in chillers. Fouling experiments were conducted with two new tubes:one with an EAF treatment and the other without it. Brush punching of a fouled tube with an enhanced spin-grit brush cleaned almost all of the scale above the fins for the case with the EAF treatment, thus recovering 90 of the initial overall heat transfer coefficient values. However, for the case without the EAF treatment, the spin-grit brush punching was not effective in removing scale. The present experiment indicated that the EAF technology could be used to control precipitation fouling in a spirally-ribbed tube.
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