To understand the sensitivity of different parameters — such as capital cost, power cost, water cost, and weather — consider the model of a typical 1,200-ton plant for a data center application operating 24/7 in four cities, representing different weather profiles:
For each plant location, we compared high-efficiency, air cooled screw and water cooled centrifugal chillers, both with variable-speed drives. Additionally, two load profiles are considered in the comparison: