03-11: Motor Efficiency - A Guide for Reduced Consumption General

03-11: Motor Efficiency - A Guide for Reduced Consumption GeneralThis paper will compare motor efficiency levels based on a Department of Energy survey, EPAct and NEMA Premium efficiency levels. It will focus on how a user can reduce the operating cost of cooling towers by use of premium efficient motors and adjustable speed drives. Motor purchase price is only 2 4% of the life operating cost of that motor; operating cost should be considered on any new project. A software tool for energy surveys and calculations

Unchecked biofouling can lead to shut down cooling water operations and created potential human exposure hazards

what is it about corrosion that allows all these factors - many apparently unrelated - to be possible causes

Much has been written about proper treatments and controls for the protection of cooling water systems and to insure operating efficiency

In this report

This new treatment approach provides results comparable to traditional chromate programs over a wide variety of water qualities and system conditions

In addition to reduction in input energy to fan drives and improved vibration level

The operations of several ins ta I lotions that have greatly reduced their water consumption and have approached Zero Discharge are reviewed

and high aquatic toxicity

Effects of cleaning and altered biocide treatment on LDB populations were assessed

system make-up

Microbiology plays an important role in resolution of case investigations

and where do we go the second half of this decade