79-17: Microbiological Control of Cooling WatersAn often neglected area of cooling water treatment is microbiological control. Although microbicides are widely utilized to keep cooling water free of contamination, monitoring is usually conducted after a problem develops. In addition, the frequency of dosage and selection of product are rarely tailored to the particular system for optimum control.

process and environmental exposure conditions render the towers susceptible to corrosion of embedded steel reinforcing

The lab performance evaluation

Both water and energy are critical natural resources that are interrelated in both their production and delivery

This does not provide for in-service isolation and measurement of fouling factors on both sides of exchangers

A large semi-closed cooling water system was created ten years ago and since has had aggressive corrosion attack particularly on carbon steel surfaces

associated with the lowest first costs

The new platform has the ability to measure multiple system analytes

Energy conservation considerations have led to the increasing use of two speed motors and variable frequency drives for mechanical draft cooling towers

The method processes will be illustrated

Two large natural gas-fired

because water for evaporation is unavailable at the plant site in the winter

Design considerations