Madison Area Technical College


Renovation and Chiller Upgrade



Madison Area Technical College (Madison, Wisconsin)

This project included design of the HVAC system for a new addition and remodel area, including a new BAS in this area that utilized Open protocols.  Occupancy sensors were used to control lighting as well as the mode of the VAV boxes serving the space.  One large AHU was replaced with a new unit with a waterside economizer instead of the traditional air side economizer.  The main reason for this was to reduce the odors drawn in by this unit under certain conditions.  Charcoal filters were added to this unit to further reduce odor incidents.

A second project at this location replaced an old chiller with a more efficient chiller.  During the summer previous to the chiller replacement, we installed an ultrasonic flow meter and dataloggers to collect data on the real load of this building.  This information was valuable in determining the size of this chiller to give the Owner the redundancy needed.