13-23: Direct Drive Motor Design - Improving Product Availability byThe horsepower and speed required for a given fan depends on many factors, including maximum tip speed, blade design, blade pitch, and required CFM. There are an infinite number of HP RPM shaft combinations that could be requested from a direct drive motor manufacturer. With careful design, it is possible to create a "universal" motor that covers a wide range of requirements. This paper discusses characteristics that must be considered when designing

Blowdown from water systems using the chromate or chromate/zinc-based water treatments must be treated to prevent chromate and zinc from entering effluent

Prior to initiating reinforced concrete repairs at a Cooling Tower

Pros and cons of this approach will be discussed

Make-up waters with elevated calcium hardness tend to increase the risk of scaling in circulating cooling systems where the concentration of calcium increases through higher Cycles of Concentration (COC)

With the passage of time

to help optimize chemical treatment

We will also examine the typical life cycle

fungi and biofilms in industrial water systems

Aseptrol biocide feed rates

safety compliance

Argon National Laboratories under CRADA demonstrated the use of ED/RWEDI while Nalco developed scale inhibitors for the integrated solution

of parallel shaft design