23-17: Improving the Performance Modelling of Bulk Air Coolers (BACS)Direct contact cooling towers are used in various applications where the transfer of heat and mass between water and air is needed. Bulk air coolers (BAC) are direct contact devices that are extensively used in the deep level mining industry to cool and dehumidify air, using chilled water, before entering the mine shaft. They operate mechanically in a similar manner to cooling towers with conventional cooling tower theory typically being used for