Sustainable Water Solutions LLC

Sustainable Water Solutions

Case Studies

2014-08-07 04.46.29 amIndustry: Data Center
Application: Cooling Water
Result: Savings of over 3MM Gallons and $10K every year

Background
A data center in northern California expressed a desire to cut water use and increase control of the overall cooling system.

Solution
Sustainable Water Solutions LLC sampled and tested all appropriate waters and uncovered an opportunity for this client to save over 3 MM GPY while keeping heat exchange surfaces associated with a Trane cooling system clean. The Nereus System was deployed with immediate and outstanding results.

Instrumentation
Flow meters were added to make up, bleed and recirculation lines thus allowing the measurement of water use and savings.

Temperature is measured in tower water supplied to and returning from the condenser, refridgerant entering and exiting the condenser, and ambient dry bulb. In addition relative humidity data is gathered.

Conductivity, ORP, and pH are measured on line.

Highly specialized chemical feed pumps are used that proactivly measure amount of chemical added to the system using discharge pressure sensing technology.

Chemistry
Alkalinity and Langlier Saturation Index is controlled using Condensafe II a 100% safe synthetic alternative to sulfuric acid. Scaling is and biology are controlled using water treatment formlations specifically designed to be effective in the Nereus system. The small amount of chemical that is needed,is loaded into double walled tanks where inventory is measured using ultarsolic level detection technology.

Calculations done by the system
Evaporation Rate
Approach temperature
Wet Bulb temperature
Chemical dose in ppm
Days inventory on hand
Heat Flux across Heat exchanger

Controls and communications
All aspects of the system are controlled. All data is recorded every 5 seconds. Out of spec readings trigger yellow and red state alarms which are sent directly to to those who need to know. Data and calculations are are available for review by users 24/7 via cell phone, I pad, or PC using Nereus wireless capability.