Closed circuit cooling towers

Closed circuit cooling towers or fluid coolers operate just like the open type, but dissipate the process fluid heat load into the ambient air via a heat exchange coil. This isolates the process fluid from the outside air, keeping it clean and free of contamination in a closed loop and creating 2 separate fluid circuits:

  1. An external circuit, in which spray water circulates over the coil and mixes with the outside air.
  2. An internal circuit, in which the process fluid circulates inside the coil.

During the evaporative cooling operation, heat goes from the internal circuit, via the coil to the spray water, and then to the open air as a portion of the evaporating water.

The key benefits of fluid coolers are:

  • Contaminant-free cooling circuit
  • Dry operation in winter
  • Reduced system maintenance
  • Lower overall system costs thanks to year-round savings on maintenance, water, energy and water treatment

A benefit for all BAC closed circuit cooling tower customers:

Baltimore Aircoil offers various closed circuit cooling tower configurations, each of which offers you specific benefits as listed below.

Overview of BAC closed circuit cooling towers

         BAC closed circuit cooling towers
  VXI VFL FXVE FXV-D HXI FCI RCF
Induced draft    
Forced draft          
Axial fan    
Centrifugal fan          
Combined flow        
Counterflow        •
Water saving technology            
               
Specific product line benefits
             
Low Sound +++ +++ ++ ++ ++ + +
Energy Efficiency + + +++ +++ +++ +++ ++
Easy Maintenance ++ ++ +++ +++ +++ +++ +++
Operational safety (hygiene) ++ ++  +++ +++ +++ +++ +++

Want to know more about closed circuit cooling towers? Ask your local BAC representative for more information.

Benefits

 

  • Prevents airborne contaminants entering or fouling the system
  • Less maintenance
  • Minimal water treatment
  • Free cooling possible
  • Dry operation in winter
  • Closed loop in single piece of equipment