The fouling potential of three-dimensional enhanced tubes,two-dimensional enhance tubes and plain tubes decreased in sequence. The asymptotic fouling resistance may be proportional to
the pitch of rib. Lower rib height and width are the possible factors that cause a higher fouling resistance. A higher number of starts (Ns) and a bigger helix angle (a) may cause a higher asymptotic fouling resistance. A methodology was proposed to provide the
cooling water at the controllable water quality, which make it possible that to include the chemical indexes of water in the fouling prediction model as variables to reflect the impact of water quality on the fouling.