Chilled Water South Loop – University of GA Athens

The University of Georgia at Athens went through a reconfiguration of its central chilled water system to allow importing of chilled water from the south loop and exporting of chilled water from the building chillers to the south loop of their central chilled water system. UGA contracted with CxGBS to commission these modifications, which included twelve buildings connected to their chilled water south loop upgrade.

The commissioning activities included evaluation of existing chilled water systems (chillers, cooling towers, legacy controls, etc.) within the buildings and modifications including new DDC controls and infrastructure associated with the project (graphics, controllers, sensors, pumps, flow meters, control valves, etc.). Pretesting activities involved verification of system component calibrations, TAB verification, followed by functional testing of existing systems and new modifications against the design intent of the project.

Added Value through CxGBS® Services:

• CxGBS identified deficiencies in the legacy systems with recommendations on opportunities for improved performance.
• CxGBS identified discrepancies between design, as-built documents, and control graphics and verified corrections so UGA had consistency between the various sources of information generated by the project team.
• CxGBS identified errors in energy calculations performed within the BAS controls and verified correction.
• CxGBS help identify that the central loop pressure was inhibiting export of chilled water from buildings whit central plants.
• CxGBS found discrepancies as a result of functional testing.

TEAM:

Owner:
University of Georgia

Design Professionals:
RMF Engineering

Construction Professionals:
Martin Mechanical

Commissioning Professionals:
Commissioning & Green Building Solutions, Inc.