Norlin Library Chiller Plant, Boulder, Colorado

A new chilled water plant was designed and installed at the main campus library.  Chilled water was not previously used at this facility.  A new subbasement addition was built to house the two 400-ton absorption chillers.  Steam from the central plant was used to fire the chillers.  A primary-secondary pumping scheme was utilized along with variable volume water flow.  Sixteen air handlers were retrofitted to accept chilled water coils and piping throughout the library was installed.  Direct digital controls were designed to optimize plant performance.