Cooling towers at closed-circuit are cooling units used primarily for industrial or HVAC applications that, by harnessing a mass of cold air, allow process water to be cooled and excess heat to be dissipated. As closed systems, the process water to be cooled remains within the circuit and thus is not polluted by contamination or external agents. Unlike opencooling towers , therefore, in cooling towers at closed-circuit the water, remaining inside the heat exchanger, remains 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 heat exchange coils and optimising the L/G ratio at best.
Reliability and quality are also guaranteed by the UNI EN ISO 9001 certification, and by the use of coils heat exchangers designed with top-quality EN ISO 12305-3 grade E235 electro-welded tubes and subject to stringent quality control. The coils are also built to the Decsa standard that guarantees pressure tightness up to 25 bar and use at operating pressures up to 7 bar.
Decsa closed circuit cooling towers ensure excellent performance with low operating and transportation costs. These cooling systems, available in a wide choice of sizes and models according to the specific needs of each customer, are designed to ensure quietness and reliability and are used for all types of applications in industrial process cooling and HVAC systems.
Below are the main areas of application:
The REF-C series cooling tower at closed-circuit features a high-strength structure and paneling and is equipped with double-intake centrifugal fans, designed to ensure minimal noise. Designed to ensure low operating costs and low accessory costs, the cooling tower REF-C is particularly suitable for installations in the industrial or HVAC fields where quietness, efficiency and reliability are a key consideration in equipment selection.
The REF-A industrial cooling tower is made of Z-725 hot-dip galvanized steel sheet and is equipped with the latest generation of axial fans with balanced impeller, equipped with adjustable blades with high-efficiency profile. It is extremely flexible and particularly suitable for applications in cooling systems in the food, automotive, power generation, air conditioning, chemical, metallurgical and industrial fields. This cooling tower guarantees high-efficiency thermodynamic performance, cost savings and environmental sustainability.
