Also known as evaporative fluid coolers, closed-circuit cooling towers can keep your system cool and contaminant-free in a closed loop. Two separate fluid circuits are created within this model, resulting in spray water mixing with the outside air.
These cooling towers operate similarly to open cooling towers. One of the only differences between the models is the heat load is transferred from the process fluid to ambient air through a heat exchange coil in closed circuit towers. The coil will isolate the process fluid from the outside air. This will keep it clean while in a closed loop.
Two separate fluid circuits are then created. They include an external circuit, which spray water circulates over the coil, eventually mixing with the outside air. The second is an internal circuit, in which process fluid circulates inside the coil. Heat is transferred from the internal circuit, processed through the coil to spray water, then to the atmosphere.
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