Coil Technology Expands Dry Operation of Fluid Cooler

SPX Cooling Technologies Inc. incorporated a proprietary Aero-X coil technology into its induced-draft, closed-circuit DT fluid coolers. The Aero-X tube profile maximizes thermal capacity per coil row, says the company.

Dry operation is extended for longer periods with switch point temperatures up to 10°F higher than other similar closed-circuit cooling towers, according to the manufacturer. Depending on climate, operators can gain up to 15 to 20 percent more incremental annual hours in dry mode, with 3,000 gal/ton and $40/ton annual water savings per ton of cooling achievable in many areas.

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Avoiding scale, corrosion and microbiological growth — all of which diminish effective heat transfer — is the focus of any water treatment approach for water-contacted process heating and cooling equipment.