Strategies for Water Use Efficiency – Cooling Tower Selection – Part V
By Bob Van Goor | July 23, 2012
Tower WATER Quality Savings POTENTIAL
Today’s building owner’s have many opportunities to improve water use efficiency. ASHRAE Standard 189.1 identifies a few areas to focus on reducing water use specific to cooling towers. The last four issues of Deppmann’s Monday Morning Minutes has discussed specific strategies to improve water use efficiency using current Cooling Tower and Advanced Water Treatment technology advancements in design.
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Example: Using strategies discussed in prior issues, let’s compare a typical 500 ton cooling tower installation and how the savings can add up. We’ll assume a typical design operating 16 hours a day for 260 days in a year.
Drift Loss Savings: Using High Efficiency Drift Eliminators. Reducing drift loss from .005% to .0004% would result in a savings of over 17,000 gallons of water a year. The Tower Tech Cooling Tower utilizes High efficiency Drift Eliminators on all units.
Cycles of Concentration: By applying advanced water treatment technology, it is not uncommon to increase cycles of concentration from 2 to 6 resulting in approx 10,000 gallons per day savings potential using this example. Your savings may vary depending on water quality and job site conditions. The Griswold Wave uses pulse technology to eliminate chemical treatment while providing advanced water treatment.
Chemicals: Chemicals can be effectively eliminated by combining the use of a Tower Tech Cooling Tower and the Griswold Wave. The Tower Tech design eliminates algaeside requirements by eliminating exposure to sunlight. The Griswold Wave using pulse technology controls scale, biologicals as well as providing corrosion protection without the use of chemicals. Savings in this example would exceed $15,000 annually.
In addition to the above savings, use of these technologies also improves equipment efficiency, reduces maintenance costs, eliminates sewer disposal costs and allows for non potable reuse of blow down water.
The R.L. Deppmann Company can evaluate your Cooling Tower System and recommend operational savings opportunities. Call us today and start saving!
Next issue we will discuss what pulse technology is and why we use to effect water quality.
Disclaimer: R. L. Deppmann and it’s affiliates can not be held liable for issues caused by use of the information on this page. While the information comes from many years of experience and can be a valuable tool, it may not take into account special circumstances in your system and we therefore can not take responsibility for actions that result from this information. Please feel free to contact us if you do have any questions.
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