Several strategies can be employed to reduce cooling tower water consumption, including:
CoC is a ratio comparing the level of dissolved solids in the recirculating water to the level in the make-up water.
For every 10°F of cooling, a tower evaporates approximately 1% of its total circulating water flow. This is "productive" water loss because it provides the actual cooling effect. 2. Blowdown (Bleed-off): Managing Water Quality
Evaporation is the reason cooling towers exist. To cool the remaining water, a small portion is turned into vapor, carrying heat away into the atmosphere.
Cooling Tower Water Consumption: A Review of the Issues and Opportunities for Water Conservation
If you need a specific calculation (e.g., for a given tonnage, range, or location) or help with water conservation ROI, let me know.