Closed cooling towers are specialized systems used to remove heat from industrial processes or buildings. They work by circulating water through a closed loop, where it absorbs heat and then passes through a heat exchanger. This process allows the heat to be dissipated into the atmosphere without direct contact with the outside air. These towers are designed to minimize water loss and contamination, making them more efficient than open cooling towers. They are commonly used in applications such as power plants, manufacturing facilities, and HVAC systems, where maintaining a stable temperature is crucial for optimal performance.