11-08: Efficacy of Non-chemical Devices In Controlling Legionella: Results FromThe objective of this investigation was to assess the ability of several classes of non chemical water treatment devices (NCDs) to control the growth of Legionella in a model cooling system. In addition, water samples from cooling towers treated with NCDs were also tested. NCD devices did not prevent Legionella growth in the model cooling towers or in field tests. Building owners and engineers should test water samples for Legionella from cooling

The culture method is a poor fit for routine assessment of operating risk of Legionella in cooling water systems because operators cannot make timely decisions about corrective actions

Extensive modeling and full-scale studies have defined limits for several parameters beyond which predictability of performance can suffer seriously

ion flotation

there is a great need to specify a cooling tower to optimize the system

The reheat of the condensate requires energy which is redirected from generating capacity which is often ignored

cross flute type

In recent years there has been considerable debate on the merits of designing around lower nominal condenser water flow rates with a higher range in order to improve system lifecycle costs

thus releasing the use of scarce and valuable higher grade water for other more important uses

This paper will focus on SCC standards and guidelines for cooling towers

and gearboxes

and what are the "right" reasons

reduced energy consumption