Wet-dry cooling tower

Figure 5. Single structure type wet-dry cooling tower.

The paper makes a comparison between separate-structure wet/dry cooling towers with different condensers or the same condenser and with parallel or series circulating water flow. The use of single-structure versus separate structure wet/dry towers is also considered. 

Wet/Dry Cooling Tower An Effective Plume Control Method... 

Under certain conditions, the exhaust air of conventional mechanical draft cooling towers may form a fog plume, causing visibility and icing problems to highways and equipment. In cases where this cannot be tolerated, a combination wet/dry cooling tower is shown to be effective fog plume control method. The paper describes the basic phenomena of cooling tower fog formation. The operation and performance characteristics of the wet/dry tower are discussed as well as a method of select wet/dry design criteria. 11 refs, cited. 

Dry and Wet/Dry Cooling Towers for Power Plants Webb, Ralph L. (Ed.) Barry, Robert E. (Ed.)... 

Considerations Required for the Optimum Design of a Wet-Dry Cooling Tower with Respect to Minimizing (Cost and) Visible Vapor Vodicka, V. Henning, H. 

Typically limit to 2500 to 3500 ppm TDS maximum in the cooling system, depending on circumstances. High levels can increase the tendency for galvanic corrosion. Levels of over 5000 ppm TDS can affect thermal performance and may be detrimental to wood in alternatively wet/dry cooling tower zones, such as the fan deck and louver faces. 

Wet-dry cooling towers incorporating these designs are being used for large-tower industrial applications. At present they are not available for commercial applications. 

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