Energy Savings at Town Hall
As part of a project at Town Hall to replace our chillers, which provide water for our central air conditioning plant, the Facilities Maintenance Department (FMD) changed the two pumps that circulate hot and chilled water (depending on the season), throughout the building. These pumps are set up to take turns, but one of them will be running at any given time to circulate water for either heating or cooling.
The older, conventional pumps that we replaced ran at only one speed. The first graph shows that the amperage draw, which is a measurement of the amount of energy required to run the pump, was approximately 10 amps per phase.