Closed-circuit cooling towers house a tubular heat exchanger within the tower, achieving cooling through heat exchange involving circulating air, spray water, and the process fluid. Because the system operates in a closed loop, the process fluid remains uncontaminated; this effectively safeguards the efficient operation of primary equipment and extends its service life. When ambient temperatures are low, the spray water system can be deactivated to conserve water.
Driven by national energy conservation and emission reduction policies, as well as the growing scarcity of water resources, closed-circuit cooling towers have seen widespread adoption in recent years across industries such as metallurgy, aviation, power generation, chemicals, machinery, petroleum, food processing, plastics, and rubber.
