FOULING
Suspended solids (dirt, silt, sand, airborne particulate matter and corrosion byproducts) in cooling tower water form deposits and collects on heat transfer surfaces, cooling tower fill, cooling tower basins, and spray nozzles. Collection of suspended solids in heat transfer equipment results in scale and fouling -thereby leading to loss of heat transfer efficiency, increased maintenance, and decreased equipment life.
BIOLOGICAL ACTIVITY
Evaporative coolers and cooling towers offer a warm, moist environment for biological Activity to grow and multiply. Biological Activity (algae, legionella, slime and biofilms) contributes to fouling of heat transfer surfaces (including tower fill), corrosion in all parts of the cooling tower system and creates health hazards.