Closed circuit cooling towers are cooling systems mainly used in industrial or HVAC applications which cool down process water and dissipate excess heat by using a mass of cold air. Being closed circuit cooling systems, the process water remains inside the circuit and is therefore free from contamination or external agents. Therefore, differently from open circuit cooling towers, in closed circuit cooling towers the process water, remaining inside the heat exchanger, stays isolated from the external environment, clean and free from any contamination that would otherwise damage or contaminate the process components.
Decsa has a wide range of models of closed-circuit cooling towers: the REF-A series, equipped with axial fans, and the REF-C series, equipped with centrifugal fans. For both types, Decsa enhances the evaporation of water within the plants by using high efficiency "full surface" HDGS coils and optimising the L/G ratio at best.
Reliability and quality are also guaranteed by the UNI EN ISO 9001 and UNI EN ISO 14001 certifications and the use of heat exchanger coils designed with spark-welded tubes of excellent quality EN ISO 12305-3 grade E235 and subject to strict quality controls. The coils are also built according to the Decsa standards, which guarantee pressure tightness up to 25 bar and use at operating pressures up to 7 bar.
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