Which system uses two liquids for cooling efficiency?

Secondary loop systems utilize two liquids to enhance cooling efficiency. In this setup, a primary refrigerant circulates through the evaporator to absorb heat, while a secondary fluid, typically water or a water-glycol mixture, is used to transport the absorbed cooling effect to the desired location. This method allows for optimized cooling as the primary refrigerant can operate at a more efficient temperature range, and the secondary fluid can be circulated over longer distances without significant energy losses. This two-liquid system also provides flexibility in heat distribution, making it a preferred choice in large commercial systems and applications where long-distance cooling is needed. The use of the secondary loop also allows for better control over the cooling process and can improve overall system efficiency and performance.