The Challenges
- Condenser tubes cleaned with acid yearly
- Cooling towers cleaned twice yearly
- Scale build-up lowering chiller efficiency
- Continuous chemical treatment required
One QEQI® unit was fitted to the city water cooled chiller system serving two 180 TR chillers. The signal disrupts the conditions that bond scale to surfaces, so existing deposits reduce over time and heat transfer improves, lifting efficiency by 16% over a year.
A treated plate heat exchanger stayed largely unblocked over six months while its untreated twin blocked to 3 ft, holding 14-18% higher seawater flow.
A 2.3 million sq ft US office complex cut cooling tower bio-counts from 100,000 CFU to below 1,000 within days with one QEQI® Custom 14 inch unit.
A six month trial at Bucharest’s Palace of Parliament cut hot water pipework biofouling by about 50% in both new and 30+ year-old pipe sections.
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