Cooling towers have been modified to reduce the visibility of their effluent water vapor plumes for about 40 years. The evolution, breadth of experience and technologies of plume abatement cooling towers will be described. An evolutionary improvement to existing plume abatement designs using a different heat transfer approach will be described, including some of the development and demonstration achievements to date. Differences from currently used coil-type wet/dry tower designs and benefit.

10-09: Plume Abatement - The Next Generation