Abstract: A cooling tower system includes a gas-liquid contactor having a housing coupled to a plurality of structural members. The system includes one or more basins positioned within the housing, and the one or more basins include a bottom basin. The system includes one or more packing sections positioned at least partially above the bottom basin, a fan operable to circulate a gas through the one or more packing sections, and a liquid distribution system configured to flow a solution onto the one or more packing sections, wherein the gas-liquid contactor comprises one or more materials of construction (MOCs). The plurality of structural members define a plenum comprising a containment that is at least partially segregated from the bottom basin by one or more walls, the bottom basin positioned at least partially below the packing.

Abstract: An aircraft nacelle has a first and second heat exchanger section to cool aircraft during different modes. Additionally, a fan and other components are configured to maximize efficiency and cooling capacity during a plurality of operating conditions.