National Renewable Energy Laboratory (NREL)
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy.
The U.S. Department of Energy’s High Impact Technology Catalyst program (HIT) Catalyst is designed to help identify, prioritize, and deploy cost-effective, innovative, energy-efficient technology solutions, enabling federal and commercial building owners and operators to make sound investment decisions in next generation technologies based on real-world performance testing.
NREL test conducted at Los Angeles City Hall
The DWT technology was deployed on a cooling tower in a large Los Angeles City Hall office building in Los Angeles, California. The baseline performance and DWT system performances were monitored during the 2018 cooling season. A multivariable-linear regression model was developed to estimate annual water savings for 2018. The DWT system saved an estimated 20% or 1.16 million.
The system also removed historical scale from the condenser tubes and cooling tower media.
NREL Conclusions: The DWT system eliminated the need for the use of the scale and corrosion inhibiting chemicals. A small amount of chlorine was added during the first few months of operation as a precautionary measure and was phased out when it was proven that safe conditions were maintained. Removal of calcium and other scale-producing minerals by the DWT system reduced the need for blowdown, which led to an estimated annual water savings of 1.16 million gallons, or 20% of the makeup water. The biological growth and potential for corrosion were also safely maintained by the DWT system through the automated control system.
See the full NREL report here
Result: LA City Hall wins 2020 Innovation Award for Better Buildings
City Hall East achieves 20% water Savings and 85% Reduction in Sewer Charges Through Electrochemical Water Treatment System earning them the prestigious LA Better Buildings Challenge (LABBC) award.
See the Full Report Here
See more about the U.S. Dept of Energy Better Buildings Challenge here
The United States General Services Administration (GSA)
The (GSA) is an agency of the United States Government managing and supporting the basic functioning of federal agencies. GSA develops government-wide cost-minimizing policies and other management tasks. They also are tasked with leading the way in green building design, construction, retrofit and sustainable operations and maintenance.
GSA test conducted for the Juliette Gordon Low Federal Building, Savannah GA
Juliette Gordon Low Federal Courthouse Report 038
Testing and Evaluation of a Chemical- Free Cooling Tower Water Treatment Technology