Many customers inquire about the energy-efficient cooling of closed-loop cooling towers, often wondering how low the temperature can be reduced. Theoretically, closed-loop cooling towers cannot decrease indefinitely, as this is closely related to the local wet-bulb temperature.

       What is Wet Bulb Temperature? In layman's terms, the wet bulb temperature is the lowest temperature that can be achieved in the current environment solely through the evaporation of water. Based on the cooling principle of closed-loop cooling towers, such as evaporation heat dissipation, the temperature range that closed-loop cooling towers can lower is around the local wet bulb temperature, both positively and negatively.3The wet bulb temperature varies by region, resulting in different low temperatures achieved by closed-loop cooling towers.