SAND STORM SEPARATOR MYTH

These particle distribution analysis were taken at two separate district cooling plants in Dubai. Both operate with centrifugal separators. We realized that the particle analysis confirmed that most particle remaining in the cooling tower water are smaller than 40 microns and in one case had a suspended solid load of 69 ppm. Bi - monthly manual cleanup of the sumps are often considered as normal routine operation. This means - shutting down one cell at a time for a limited but repeated period.

Project References
Hennepin Energy Center, Minneapolis , Mn

Vortisand AWT1-36-SI Skid mounted 140 gpm (2009) Cooling Tower Water Loop

Data Centers Reference

• IBM Sterling Forest, NY • L & L Holding Company, New York, NY • Bell Canada‐ Nexacor, Toronto, Ottawa, Montreal , Brampton, Kitchener • Major Internet, credit operation centers in US and Western Europe

Wyeth-Whitehall Pharmaceuticals Co., Guayana, Puerto Rico

Vortisand AWT2-30-SP Skid mounted 200 gpm Cooling tower side stream application (2007) 2 x Vortisand AWT3-30-SP Skid mounted 300 gpm Cooling tower side stream application (2009)

GM Plant, Mexico

Vortisand Model AWT3-30-SI

E.I. DUPONT, Orange, Texas

Vortisand Model AWT10-36-SS (2 banks) COC increased from 6 to 9 after one week of filtration = Makeup water and chemical savings

SHELL Canada, Montreal

Makeup and Cooling Tower Water Filtration (Model AWT26-30-SP) Filtration flowrate : 2,400 gpm • 30 days to achieve 0.35 ppm Iron from start-up • Cleaned Exchanger nozzles

Saudi Aramco, Seawater Application - Injection Well (Saudi Arabia)

Vortisand Model AWT5-30-SP 350 gpm seawater filtration