U.S. General Services Administration
AWT: Monitoring & Partial Softening
Cooling towers create some of the larger potable water loads in commercial office buildings. Up to 50% is regularly flushed or blown down to minimize scale build up.
The National Renewable Energy Laboratory (NREL) tested a supplemental water treatment system that determines the optimal blowdown to satisfy water chemistry limits. Researchers found that the system saved 15% water.
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