- is equipment that is used to cool water or other liquids in the industry. Industrial processes require large volumes of cold water, often at a temperature very close to the ambient temperature. In such cases, you can use free coolers (dry cooling towers). Free coolers or dry coolers are water-air heat exchangers that provide cooling of water through ambient air passing through the heat exchanger plates by means of axial fans. At the same time, energy consumption is significantly lower compared to compressor coolers. Therefore, in those processes where possible, free coolers are used instead of compressor-based chillers, which leads to a reduction in electricity costs.