The trend toward high pH cooling water treatment programs and their effect on hot-dip galvanized cooling towers is discussed. Included are typical ranges of cooling water quality, corrosion rates experienced in the systems and deposit composition when experienced. The effects of concentration cells on galvanized steel in high solids water will be addressed. Also included are observations and experiences for maintaining trouble free operation.

86-04: Experience With Galvanized Cooling on Alkaline Treatment Programs