When people ask, “What is cooling tower?” The best answer is that cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. Water cooling towers, such as evaporative cooling towers use the evaporation of water to remove process heat and cool the working fluid to near the wet-bulb air temperature. Some, such closed circuit dry cooling towers, relies purely on air to cool the working fluid to near the dry bulb air temperature. Applications include cooling the circulating water used in oil refineries, petrochemical and other chemical plants, thermal power stations and HVAC systems for cooling buildings.
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