01-04: Cooling Towers, Evaporative Condensers, and ASHRAE Guideline 12-2000ASHRAE recently published a guideline, 'Minimizing the Risk of Legionellosis Associated with Building Water Systems'. Guideline 12 presents guidance covering a multitude of systems including cooling towers and evaporative condensers. The guideline presents a description of each system as well as an overview of the system operation including operating temperature, water droplet sizes, and nutrient availability. Recommended treatment practices are

among others

assessing water quality and specifying the types

These explanations are supported by tests

and how it is treated during those first critical weeks of operation

and materials/controls available to help operators understand the term "Green" as definable and measurable

Sometimes we are applying acid treatments of the circulation water

The order of decreasing volatility is ozone > chloramines > hypochlorous acid

Evaluations of biocide treatment programs are made by monitoring the microbial cells (algal

BPA has designed and built the nation's largest network of long-distance transmission lines

The process defines the responsibilities of the roles of the service providers

The goal of this study is to demonstrate that worthwhile flow determinationsrequire a system design having suitable measurement access locations with adequate piping runs

process water