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89-15: Design, Operation and Water Treatment of a Wet Finned Tube ExchangerDue to high maintenances costs, the Southern California Gas Company replaced existing open cooling towers with "wet" Fin Fan coolers. The "wet" Fin Fan is similar to a standard Fin Fan, but enclosed with "walls" which act as an evaporative air precooler. The "walls" which act as an evaporative air precooler. The "walls" are made from fiberglass evaporative fill material, over which water is circulated. Three such towers were constructed between 1982

The work involved demolition of the severely degraded crossflow cooling heat exchange system and installing an all new composite fiberglass support structure

one of the two seven cell mechanical draft cooling towers serving American Electric Power's (AEP) 780 MW Conesville Unit 4 suddenly collapsed into the cold water basin

A number of apparently conflicting claims currently exist regarding the cycles of concentration that can be effectively maintained in open recirculating cooling water systems using various alternative control/treatment schemes with and without pretreatment

the primary objective of this paper will be to evaluate the use of Tris (Hydroxymenthyl) Nitromethane (TN)

On-line corrosion monitors and deposit monitors will indicate expected results and needs for program adjustments

United States is by far greater than any other country in the industrialized world

Extensive wood sampling and analyses programs were initiated on crossflow and counterflow cooling towers that have been in service since 1951 and 1955

This participation of soluble silica in the development of heat-resistant films occurred at circulating water silica contents below 75 ppm

What has caused this change

Guide lines for successful water reuse are based on recent documentation throughout the USA and will be included in the paper

The aim of this report is to bring to light the serious problems confronting the users of cooling towers and to describe accepted and proven methods of coping with these problems

along with the analysis of field data is expected to result in concrete recommendation to overcome the field level problem in performance evaluation and thus improved performance

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